View Filing Data

Document And Entity Information - USD ($)	12 Months Ended
Document And Entity Information - USD ($)	Dec. 31, 2011	Jan. 20, 2012	Jun. 30, 2011
Document And Entity Information [Abstract]
Entity Registrant Name	INTUITIVE SURGICAL INC
Entity Central Index Key	0001035267
Current Fiscal Year End Date	--12-31
Trading Symbol	isrg
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		39,346,384
Entity Public Float			$ 14,370,737,496
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2011
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	FY
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No

Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2011	Dec. 31, 2010
ASSETS
Cash and cash equivalents	$ 465.8	$ 279.8
Short-term investments	563.4	630.6
Accounts receivable, net of allowances of $5.6 and $4.8 at December 31, 2011 and 2010, respectively	297.9	246.8
Inventory	112.1	86.8
Prepaids and other current assets	20.9	23.3
Deferred tax assets	6.2	8.5
Total current assets	1,466.3	1,275.8
Property, plant and equipment, net	197.2	159.8
Long-term investments	1,142.6	698.5
Long-term deferred tax asset	69.1	73.3
Intangible and other assets, net	71.0	66.1
Goodwill	116.9	116.9
Total assets	3,063.1	2,390.4
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	45.8	35.6
Accrued compensation and employee benefits	83.1	63.4
Deferred revenue	154.2	126.1
Other accrued liabilities	37.5	48.7
Total current liabilities	320.6	273.8
Other long-term liabilities	96.9	79.2
Total liabilities	417.5	353.0
Commitments and contingencies (Note 6)
Stockholders' equity:
Preferred stock, 2.5 shares authorized, $0.001 par value, issuable in series; no shares issued and outstanding as of December 31, 2011 and 2010, respectively
Common stock, 100.0 shares authorized, $0.001 par value, 39.3 and 38.9 shares issued and outstanding as of December 31, 2011 and 2010, respectively
Additional paid-in capital	1,742.8	1,316.9
Retained earnings	901.9	718.9
Accumulated other comprehensive income	0.9	1.6
Total stockholders' equity	2,645.6	2,037.4
Total liabilities and stockholders' equity	$ 3,063.1	$ 2,390.4

Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Millions, $ in Millions	Dec. 31, 2011	Dec. 31, 2010
Consolidated Balance Sheets [Abstract]
Accounts receivable, allowances	$ 5.6	$ 4.8
Preferred stock, shares authorized	2.5	2.5
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares issued	0.0	0.0
Preferred stock, shares outstanding	0.0	0.0
Common stock, shares authorized	100.0	100.0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares issued	39.3	38.9
Common stock, shares outstanding	39.3	38.9

Consolidated Statements Of Income - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Revenue:
Product	$ 1,478.9	$ 1,189.1	$ 879.9
Service	278.4	223.9	172.3
Total revenue	1,757.3	1,413.0	1,052.2
Cost of revenue:
Product	382.3	297.3	237.6
Service	101.2	85.7	63.5
Total cost of revenue	483.5	383.0	301.1
Gross profit	1,273.8	1,030.0	751.1
Operating expenses:
Selling, general and administrative	438.8	358.8	278.6
Research and development	140.2	116.0	95.1
Total operating expenses	579.0	474.8	373.7
Income from operations	694.8	555.2	377.4
Interest and other income, net	14.9	17.1	18.7
Income before income taxes	709.7	572.3	396.1
Income tax expense	214.6	190.5	163.5
Net income	$ 495.1	$ 381.8	$ 232.6
Net income per common share:
Basic	$ 12.63	$ 9.74	$ 6.07
Diluted	$ 12.32	$ 9.47	$ 5.93
Shares used in computing basic and diluted net income per share:
Basic	39.2	39.2	38.3
Diluted	40.2	40.3	39.2

Consolidated Statement Of Stockholders' Equity - USD ($) shares in Millions, $ in Millions	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings (Accumulated Deficit) [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balances (shares) at Dec. 31, 2008	39.2
Balances (value) at Dec. 31, 2008		$ 871.8	$ 397.8	$ (2.9)	$ 1,266.7
Issuance of common stock upon exercise of options and under stock purchase plan (shares)	0.7
Issuance of common stock upon exercise of options and under stock purchase plan (value)		63.2			63.2
Income tax benefit from stock option exercises		23.6			23.6
Stock-based compensation expense related to employee stock plans		97.0			97.0
Repurchase and retirement of common stock (shares)	(1.4)
Repurchase and retirement of common stock (value)		(31.3)	(118.7)		(150.0)
Components of comprehensive income, net of tax:
Net income			232.6		232.6
Other comprehensive income (loss)				4.2	4.2
Total comprehensive income					236.8
Balances (shares) at Dec. 31, 2009	38.5
Balances (value) at Dec. 31, 2009		1,024.3	511.7	1.3	1,537.3
Issuance of common stock upon exercise of options and under stock purchase plan (shares)	1.1
Issuance of common stock upon exercise of options and under stock purchase plan (value)		141.1			141.1
Income tax benefit from stock option exercises		57.9			57.9
Stock-based compensation expense related to employee stock plans		117.6			117.6
Repurchase and retirement of common stock (shares)	(0.7)
Repurchase and retirement of common stock (value)		(24.0)	(174.6)		(198.6)
Components of comprehensive income, net of tax:
Net income			381.8		381.8
Other comprehensive income (loss)				0.3	0.3
Total comprehensive income					$ 382.1
Balances (shares) at Dec. 31, 2010	38.9				38.9
Balances (value) at Dec. 31, 2010		1,316.9	718.9	1.6	$ 2,037.4
Issuance of common stock upon exercise of options and under stock purchase plan (shares)	1.4
Issuance of common stock upon exercise of options and under stock purchase plan (value)		260.6			260.6
Income tax benefit from stock option exercises		48.6			48.6
Stock-based compensation expense related to employee stock plans		136.4			136.4
Repurchase and retirement of common stock (shares)	(1.0)
Repurchase and retirement of common stock (value)		(19.7)	(312.1)		(331.8)
Components of comprehensive income, net of tax:
Net income			495.1		495.1
Other comprehensive income (loss)				(0.7)	(0.7)
Total comprehensive income					$ 494.4
Balances (shares) at Dec. 31, 2011	39.3				39.3
Balances (value) at Dec. 31, 2011		$ 1,742.8	$ 901.9	$ 0.9	$ 2,645.6

Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Operating activities:
Net income	$ 495.1	$ 381.8	$ 232.6
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	28.7	23.7	19.0
Amortization of intangible assets	17.8	16.7	15.6
Deferred income taxes	7.1	(21.5)	(15.6)
Share-based compensation expense of stock options and employee stock purchases	136.4	117.6	97.0
Excess tax benefit from stock-based compensation	(58.8)	(65.2)	(25.1)
Income tax benefits related to stock option exercises	48.6	57.9	23.6
Other non-cash items	22.6	17.8	7.1
Changes in operating assets and liabilities:
Accounts receivable	(51.1)	(41.5)	(35.3)
Inventory	(25.3)	(29.2)	5.9
Prepaids and other assets	(9.4)	1.1	(6.3)
Accounts payable	10.3	8.1	7.0
Accrued compensation and employee benefits	19.6	13.8	12.8
Deferred revenue	28.1	26.5	21.3
Other accrued liabilities	7.9	38.2	32.6
Net cash provided by operating activities	677.6	545.8	392.2
Investing activities:
Purchase of investments	(1,532.2)	(1,385.4)	(764.5)
Proceeds from sales and maturities of investments	1,136.1	987.1	518.4
Purchase of property and equipment and acquisition of intellectual property	(82.9)	(96.0)	(53.4)
Net cash used in investing activities	(479.0)	(494.3)	(299.5)
Financing activities:
Proceeds from issuance of common stock, net	260.6	141.1	58.7
Excess tax benefit from stock-based compensation	58.8	65.2	25.1
Repurchase and retirement of common stock	(331.8)	(198.6)	(150.0)
Net cash (used in) provided by financing activities	(12.4)	7.7	(66.2)
Effect of exchange rate changes on cash and cash equivalents	(0.2)	(0.8)	0.3
Net increase in cash and cash equivalents	186.0	58.4	26.8
Cash and cash equivalents, beginning of year	279.8	221.4	194.6
Cash and cash equivalents, end of year	465.8	279.8	221.4
Supplemental cash flow information:
Income taxes paid	$ 152.0	$ 124.4	$ 129.1

Description Of The Business	12 Months Ended
Description Of The Business	Dec. 31, 2011
Description Of The Business [Abstract]
Description Of The Business	NOTE 1. DESCRIPTION OF THE BUSINESS Intuitive Surgical, Inc. designs, manufactures, and markets the da Vinci Surgical System, which is an advanced surgical system that the Company believes represents a new generation of surgery. The da Vinci Surgical System consists of a surgeon's console or consoles, a patient-side cart, a high performance vision system and proprietary "wristed" instruments. The da Vinci Surgical System translates the surgeon's natural hand movements on instrument controls at the console into corresponding micro-movements of instruments positioned inside the patient through small puncture incisions, or ports. The Company markets its products through sales representatives in the United States, and through a combination of sales representatives and distributors in its international markets.

Summary Of Significant Accounting Policies

12 Months Ended

Dec. 31, 2011

Summary Of Significant Accounting Policies [Abstract]

Summary Of Significant Accounting Policies

NOTE 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

The Consolidated Financial Statements have been prepared in accordance with U.S. generally accepted accounting principles (U.S. GAAP) and include the accounts of the Company and its wholly-owned subsidiaries. All significant inter-company balances and transactions have been eliminated in consolidation.

Certain prior year amounts in the consolidated financial statements and notes thereto have been reclassified to conform to the current year's presentation.

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the Consolidated Financial Statements and accompanying Notes to Consolidated Financial Statements. The accounting estimates that require management's most significant, difficult and subjective judgments include the valuation and recognition of investments, the valuation of the revenue and allowance for sales returns and doubtful accounts, the estimation of hedging transactions; the valuation of inventory, the assessment of recoverability of intangible assets and their estimated useful lives, the valuation and recognition of stock-based compensation and the recognition and measurement of current and deferred income tax assets and liabilities. Actual results could differ materially from these estimates.

Concentrations of Credit Risk and Other Risks and Uncertainties

The carrying amounts for financial instruments consisting of cash and cash equivalents, accounts receivable, accounts payable and accrued liabilities approximate fair value due to their short maturities. Marketable securities and derivative instruments are stated at their estimated fair values, based on quoted market prices for the same or similar instruments. The counterparties to the agreements relating to the Company's investment securities and derivative instruments consist of various major corporations, financial institutions, municipalities and government agencies of high credit standing.

The Company's accounts receivable are derived from net revenue to customers and distributors located in the United States and other countries. The Company performs credit evaluations of its customers' financial condition and, generally, requires no collateral from its customers. The Company provides reserves for potential credit losses but has not experienced significant losses to date. As of December 31, 2011 and 2010, 77% and 76%, respectively, of accounts receivable were from domestic customers. No single customer represented more than 10% of net accounts receivable as of December 31, 2011 and 2010.

During the years ended December 31, 2011, 2010 and 2009, domestic revenue accounted for 78%, 80% and 79%, respectively, of total revenue, while international revenue accounted for 22%, 20% and 21%, respectively, of total revenue, for each of the years. No single customer represented more than 10% of total revenue for the years ended December 31, 2011, 2010 and 2009.

Cash and Cash Equivalents

The Company considers all highly liquid investments with an original maturity from date of purchase of 90 days or less to be cash equivalents.

Investments

Available-for-sale investments. The Company's investments consist of U.S. treasury and U.S. government agency securities, taxable and tax exempt municipal notes, some of which may have an auction reset feature (auction rate securities or ARS), corporate notes and bonds, commercial paper, cash deposits and money market funds. The Company has designated all investments as available-for-sale and therefore, such investments are reported at fair value, with unrealized gains and losses recorded in accumulated other comprehensive income. For securities sold prior to maturity, the cost of securities sold is based on the specific identification method. Realized gains and losses on the sale of investments are recorded in interest and other income, net. Investments with original maturities greater than approximately three months and remaining maturities less than one year are classified as short-term investments. Investments with remaining maturities greater than one year are classified as long-term investments.

Other-than-temporary impairment. All of the Company's investments are subject to a periodic impairment review. The Company recognizes an impairment charge when a decline in the fair value of its investments below the cost basis is judged to be other-than-temporary. Factors considered in determining whether a loss is temporary included the length of time and extent to which the investments fair value has been less than the cost basis, the financial condition and near-term prospects of the investee, extent of the loss related to credit of the issuer, the expected cash flows from the security, the Company's intent to sell the security and whether or not the Company will be required to sell the security before the recovery of its amortized cost. During the years ended December 31, 2011, 2010 and 2009, the Company did not record any other-than-temporary impairment charges on its available-for-sale securities, because the Company does not intend to sell the security and it is not more likely than not that the Company will be required to sell these securities before the recovery of their amortized cost basis.

Fair Value Measurements

The Company measures the fair value of money market funds and certain debt securities based on quoted prices in active markets for identical assets (Level 1 securities). Marketable securities, measured at fair value using Level 2 inputs, are primarily comprised of U.S. government agencies and FDIC guaranteed securities and corporate debt securities. We review trading activity and pricing for these investments as of the measurement date. When sufficient quoted pricing for identical securities is not available, we use market pricing and other observable market inputs for similar securities obtained from various third party data providers. These inputs either represent quoted prices for similar assets in active markets or have been derived from observable market data. This approach results in the Level 2 classification of these securities within the fair value hierarchy.

Where Level 1 and Level 2 inputs are not available, the Company used a discounted cash flow model based on data available, including interest rates, timing and amount of cash flows, credit and liquidity premiums and expected holding period (Level 3 securities). The only Level 3 securities consist of municipal bonds with an auction reset feature (ARS) whose underlying assets are student loans which are substantially backed by the federal government. Since the auctions for these securities have continued to fail since February 2008, these investments are not currently trading and therefore do not have a readily determinable market value. The Company recognizes transfers into or out of Level 3 classification as of the actual date of the event or change in circumstances that caused the transfer

Allowance for Sales Returns and Doubtful Accounts

The allowance for sales returns is based on the Company's estimates of potential future product returns and other allowances related to current period product revenue. The Company analyzes historical returns, current economic trends and changes in customer demand and acceptance of our products.

The allowance for doubtful accounts is based on the Company's assessment of the collectibility of customer accounts. The Company regularly reviews the allowance by considering factors such as historical experience, credit quality, the age of the accounts receivable balances, and current economic conditions that may affect a customer's ability to pay.

Inventory

Inventory is stated at the lower of cost or market value on a first-in, first-out basis. Inventory costs include direct materials, direct labor, direct subcontractor costs, and manufacturing overhead. The Company provides inventory write-downs based on excess and obsolete inventories determined primarily by future demand forecasts.

Property, Plant and Equipment

Property, plant and equipment are stated at cost, net of accumulated depreciation. Property, plant and equipment are depreciated on a straight-line basis over the estimated useful lives of the assets generally as follows:


		Useful Lives
Building		up to 30 years
Building improvements		up to 15 years
Leasehold improvements		Lesser of useful life or term of lease
Equipment and furniture		5years
Computer equipment		3years
Enterprise-wide software		up to 5 years
Purchased software		Lesser of 3 years or life of license

Depreciation expense for years ended December 31, 2011, 2010 and 2009 was $28.7 million, $23.7 million and $19.0 million, respectively.

Capitalized Software Costs for Internal Use

Internally developed software primarily includes enterprise-level business software that the Company customizes to meet its specific operational needs. The Company capitalized costs for enhancement of the enterprise resource planning software system and other internal use software of approximately $5.2 million and $8.5 million during the years ended December 31, 2011 and 2010, respectively. Upon being placed in service, these costs are depreciated over an estimated useful life of up to 5 years.

Goodwill and Intangible Assets

Goodwill, which represents the excess of the purchase price over the fair value of net tangible and identifiable intangible assets, is not subject to amortization, but is subject to at least an annual assessment for impairment, applying a fair-value based test.

The Company's intangible assets are comprised of purchased intellectual property. These intangible assets are carried at cost, net of accumulated amortization. Amortization is recorded using the straight-line method, over their respective useful lives, which range from approximately 1 to 9 years.

Impairment of Long-lived assets

Goodwill and intangible assets with indefinite useful lives are not amortized, but are tested for impairment at least annually or as circumstances indicate their value may no longer be recoverable. The Company does not have intangible assets with indefinite useful lives other than goodwill. Goodwill impairment test is generally performed annually during the fourth fiscal quarter (or earlier if impairment indicators arise). The Company continues to operate in one segment, which is considered to be the sole reporting unit and therefore, goodwill was tested for impairment at the enterprise level. As of December 31, 2011, there has been no impairment of goodwill.

The Company evaluates the recoverability of its long-lived assets, which include amortizable intangible and tangible assets. Acquired intangible assets with definite useful lives are amortized over their useful lives. The Company evaluates long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying value of long-lived assets may not be recoverable. The Company recognizes such impairment in the event the net book value of such assets exceeds the future undiscounted cash flows attributable to such assets. No material impairment losses were incurred in the periods presented.

Revenue Recognition

The Company's revenue consists of product revenue resulting from the sales of systems, instruments and accessories, and service revenue. The Company recognizes revenue when all four revenue recognition criteria have been met: persuasive evidence of an arrangement exists; delivery has occurred or service has been rendered; the price is fixed or determinable; and collectibility is reasonably assured. The Company's revenue recognition policy generally results in revenue recognition at the following points:

•

System sales. For system sales directly to end customers, revenue is recognized when acceptance occurs, which is deemed to have occurred upon the receipt by the Company of a form executed by the customer acknowledging delivery and/or installation. For system sales through distributors, revenue is recognized upon transfer of title and risk of loss, which is generally at the time of shipment. Distributors do not have price protection rights. The Company's system contracts do not allow rights of return. The Company's system revenue contains a software component. Since the da Vinci Surgical System's software and non-software elements function together to deliver the System's essential functionality, they are considered to be one deliverable that is excluded from the software revenue recognition guidance.

•

Instruments and accessories. Revenue from sales of instruments and accessories is recognized when the product has been shipped. The Company records an allowance on instruments and accessories sales returns based on historical returns experience.

•

Service. Service contract revenue is recognized ratably over the term of the service period. Revenue related to services performed on a time-and-materials basis is recognized when it is earned and billable.

The Company determined that its multiple-element arrangements are generally comprised of the following elements that would qualify as separate units of accounting: system sales, service contracts and instruments and accessories sales.

In September 2009, the Financial Accounting Standards Board ("FASB") amended the accounting standards related to revenue recognition for arrangements with multiple deliverables and arrangements that include software elements. The new accounting principles permit prospective or retrospective adoption, and the Company elected prospective adoption at the beginning of the first quarter of 2010.

For multiple-element arrangements (which are generally comprised of system sales and service contracts) entered into prior to January 1, 2010, revenue was allocated to each element based on the relative fair value of each element. Fair value is generally determined by vendor specific objective evidence (VSOE) which is based on the price charged when each element is sold separately. The Company's systems sales generally include a first year service obligation. The Company typically does not sell the systems on a stand-alone basis and therefore does not have VSOE for its systems. The Company has established VSOE for services. When the fair value of a delivered element had not been established, but fair value existed for the undelivered elements, prior to January 1, 2010, the Company used the residual method to recognize revenue. Under the residual method, the fair value of the undelivered elements was deferred and the remaining portion of the arrangement fee was allocated to the delivered elements.

Subsequent to the adoption of the new revenue accounting principles, for multiple-element arrangements entered into on or after January 1, 2010, revenue is allocated to each element based on their relative selling prices. Relative selling prices are based first on VSOE, then on third-party evidence of selling price (TPE) when VSOE does not exist, and then on estimated selling price (ESP) when VSOE and TPE do not exist.

Because the Company has neither VSOE nor TPE for its systems, the allocation of revenue has been based on the Company's ESPs. The objective of ESP is to determine the price at which the Company would transact a sale if the product was sold on a stand-alone basis. The Company determines ESP for its systems by considering multiple factors including, but not limited to, features and functionality of the system, geographies, type of customer, and market conditions. The Company regularly reviews ESP and maintains internal controls over the establishment and updates of these estimates.

Had the new accounting guidance been applied to revenue at the beginning of 2009, the resultant revenue for the year ended December 31, 2009 would have been substantially the same.

Stock-Based Compensation

The Company accounts for stock-based employee compensation plans under the fair value recognition and measurement provisions under U.S. GAAP. The Company's stock-based compensation cost is measured at the grant date, based on the fair value of the award, and is recognized as expense over the requisite service period. U.S. GAAP requires the cash flows resulting from the tax benefits due to tax deductions in excess of the compensation cost recognized for those options (excess tax benefits) to be classified as financing cash flows.

Expected Term: The Company's expected term represents the weighted-average period that the Company's stock options are expected to be outstanding. The expected term is based on the observed and expected time to post-vesting exercise of options by employees. The Company uses historical exercise patterns of previously granted options in relation to stock price movements to derive an employee behavioral pattern used to forecast expected exercise patterns.

Expected Volatility: The Company uses market-based implied volatility. Market-based implied volatility is derived based on at least one-year traded options on the Company's common stock. The selection of the proportion of market-based volatility depends, among other things, on the availability of traded options on the Company's stock and term of such options. Due to sufficient volume of the traded options, the Company used 100% market-based implied volatility. The selection of the implied volatility approach was based upon the availability of traded options on the Company's stock and the Company's assessment that implied volatility is more representative of future stock price trends than historical volatility.

Risk-Free Interest Rate: The risk-free interest rate is based on the U.S. Treasury yield curve in effect at the time of grant for the expected term of the option.

See Note 8 for a detailed discussion of our stock-based employee compensation plans and stock-compensation expense.

Computation of Net Income per Share

Basic net income per share is computed using the weighted-average number of shares outstanding during the period. Diluted net income per share is computed using the weighted-average number of shares and dilutive potential shares outstanding during the period. Dilutive potential shares primarily consist of employee stock options.

U.S. GAAP requires that employee equity share options, non-vested shares and similar equity instruments granted by the Company be treated as potential common shares outstanding in computing diluted earnings per share. Diluted shares outstanding include the dilutive effect of in-the-money options, which is calculated based on the average share price for each fiscal period using the treasury stock method. Under the treasury stock method, the amount the employee must pay for exercising stock options, the amount of compensation cost for future service that the Company has not yet recognized, and the amount of tax benefits that would be recorded in additional-paid-in-capital (APIC) when the award becomes deductible are all assumed to be used to repurchase shares.

Shipping and Handling Costs

Costs incurred for shipping and handling are included in cost of revenue at the time the related revenue is recognized. Amounts billed to customers for shipping and handling are reported as revenue.

Research and Development Expenses

Research and development (or "R&D") expenses include amortization of purchased intellectual property, costs associated with co-development R&D licensing arrangements, costs of prototypes, salaries, benefits and other headcount related costs, contract and other outside service fees, and facilities and overhead costs.

Foreign Currency and Other Hedging Instruments

For subsidiaries whose local currency is their functional currency, their assets and liabilities are translated into U.S. dollars at exchange rates at the balance sheet date and revenues and expenses are translated using average exchange rates in effect during the quarter. Gains and losses from foreign currency translation are included in accumulated other comprehensive income (loss) within stockholders' equity in the Consolidated Balance Sheets. For all non-functional currency account balances, the re-measurement of such balances to the functional currency will result in either a foreign exchange gain or loss which is recorded to interest and other income, net in the same accounting period that the re-measurement occurred.

The Company uses derivatives to partially offset its business exposure to foreign currency exchange risk. The Company enters into foreign currency forward contracts with one to seven month terms. The Company typically hedges portions of its forecasted foreign currency exposure associated with revenue. The Company may also enter into foreign currency forward contracts to offset the foreign currency exchange gains and losses generated by re-measurement of certain assets and liabilities denominated in non-functional currencies. The hedging program is not designated for trading or speculative purposes.

The Company's accounting policies for these instruments are based on whether the instruments are designated as hedge or non-hedge instruments. The Company records all derivatives on the Condensed Consolidated Balance Sheets at fair value. The effective portions of cash flow hedges are recorded in other comprehensive income (OCI) until the hedged item is recognized in earnings. Derivative instruments designated as cash flow hedges are de-designated as hedges when it is probable the forecasted hedged transaction will not occur in the initially identified time period or within a subsequent two month time period. Deferred gains and losses in OCI associated with such derivative instruments are reclassified immediately into earnings through interest and other income, net. Any subsequent changes in fair value of such derivative instruments also are reflected in current earnings.

Derivatives that are not designated as hedging instruments and the ineffective portions of cash flow hedges are adjusted to fair value through earnings in interest and other income, net.

Income Taxes

Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the year in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Valuation allowances are established when necessary to reduce deferred tax assets to the amounts that are expected more likely than not to be realized in the future.

The Company recognizes tax benefits from uncertain tax positions only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the financial statements from such positions are then measured based on the largest benefit that has a greater than 50% likelihood of being realized upon ultimate settlement.

Segments

The Company operates in one segment. Management uses one measurement of profitability and does not segregate its business for internal reporting. As of December 31, 2011 and 2010, over 98% of all long-lived assets were maintained in the United States. For the years ended December 31, 2011, 2010 and 2009, 78%, 80% and 79%, respectively, of net revenue were generated in the United States.

Recent Accounting Pronouncements

In June 2011, the Financial Accounting Standard Board ("FASB") issued new accounting guidance related to the presentation of comprehensive income that increases comparability between U.S. GAAP and International Financial Reporting Standard. This guidance eliminates the current option to report other comprehensive income (OCI) and its components in the statement of changes in stockholders' equity. This guidance is effective for the Company's interim and annual periods beginning January 1, 2012. The Company intends to adopt this guidance during the first quarter of 2012 and will report OCI in a separate statement.

In September 2011, the FASB issued new accounting guidance intended to simplify goodwill impairment testing. Entities will be allowed to perform a qualitative assessment on goodwill impairment to determine whether a quantitative assessment is necessary. This guidance is effective for the Company's interim and annual periods beginning January 1, 2012. The Company does not believe the adoption of this guidance will have a material impact on its consolidated financial statements.

Financial Instruments

12 Months Ended

Dec. 31, 2011

Financial Instruments [Abstract]

Financial Instruments

NOTE 3. FINANCIAL INSTRUMENTS

Cash, Cash Equivalents and Investments

The following tables summarize the Company's cash and available-for-sale securities' adjusted cost, gross unrealized gains, gross unrealized losses and fair value by significant investment category recorded as cash and cash equivalents or short-term or long-term investments as of December 31, 2011 and 2010 (in millions):


	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Cash and Cash Equivalents		Short-term Investments		Long-term Investments
December 31, 2011
Cash	$	51.6	$	—	$	—		$	51.6	$	51.6	$	—	$	—
Level 1:
Money market funds		403.2		—		—			403.2		403.2		—		—
US Treasuries & corporate equity securities		183.9		0.5		—			184.4		—		130.5		53.9

Subtotal		587.1		0.5		—			587.6		403.2		130.5		53.9

Level 2:
Commercial paper		63.5		—		—			63.5		11.0		52.5		—
Corporate securities		586.6		3.0		(1.4	)		588.2		—		162.4		425.8
US government agencies		521.1		1.4		(0.1	)		522.4		—		126.6		395.8
Non-US government securities		68.7		0.4		(0.1	)		69.0		—		1.3		67.7
Municipal securities		272.1		1.1		(0.1	)		273.1		—		90.1		183.0

Subtotal		1,512.0		5.9		(1.7	)		1,516.2		11.0		432.9		1,072.3

Level 3:
Municipal securities		20.0		—		(3.6	)		16.4		—		—		16.4

Subtotal		20.0		—		(3.6	)		16.4		—		—		16.4

Total	$	2,170.7	$	6.4	$	(5.3	)	$	2,171.8	$	465.8	$	563.4	$	1,142.6


	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Cash and Cash Equivalents		Short-term Investments		Long-term Investments
December 31, 2010
Cash	$	20.1	$	—	$	—		$	20.1	$	20.1	$	—	$	—
Level 1:
Money market funds		211.2		—		—			211.2		211.2		—		—
US Treasuries		116.2		0.1		—			116.3		—		76.3		40.0

Subtotal		327.4		0.1		—			327.5		211.2		76.3		40.0

Level 2:
Commercial paper		122.5		—		—			122.5		43.5		79.0		—
Corporate securities		474.6		3.1		(0.9	)		476.8		—		175.4		301.4
US government agencies		389.0		0.6		(0.4	)		389.2		5.0		187.7		196.5
Non-US government securities		21.1		0.1		(0.1	)		21.1		—		—		21.1
Municipal securities		232.7		0.7		(0.3	)		233.1		—		112.2		120.9

Subtotal		1,239.9		4.5		(1.7	)		1,242.7		48.5		554.3		639.9

Level 3:
Municipal securities		22.6		—		(4.0	)		18.6		—		—		18.6

Subtotal		22.6		—		(4.0	)		18.6		—		—		18.6

Total	$	1,610.0	$	4.6	$	(5.7	)	$	1,608.9	$	279.8	$	630.6	$	698.5

The following table summarizes the contractual maturities of the Company's cash equivalents and available-for-sale investments excluding corporate equity securities at December 31, 2011 (in millions):


	Amortized Cost		Fair Value
Mature in less than one year	$	976.2	$	976.7
Mature in one to five years		1,122.3		1,126.1
Mature in more than five years		20.0		16.4

Total	$	2,118.5	$	2,119.2

Net realized gains recognized on the sale of investments during the year ended December 31, 2011 was approximately $2.5 million. During the years ended December 31, 2010 and 2009, net realized gains or losses recognized on the sale of investments were not significant. As of December 31, 2011 and 2010, unrealized gains on investments, net of tax, of $1.1 million and $1.3 million, respectively, were included in accumulated other comprehensive income in the accompanying Consolidated Balance Sheets.

The following tables present the breakdown of the available-for-sale investments with unrealized losses at December 31, 2011 and 2010 (in millions):


	Unrealized losses less than 12 months					Unrealized losses 12 months or greater					Total
December 31, 2011	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
U.S. government agencies		168.8		(0.1	)		—		—			168.8		(0.1	)
Municipal securities		48.0		(0.1	)		—		—			48.0		(0.1	)
Auction rate securities		—		—			16.4		(3.6	)		16.4		(3.6	)
Non-U.S. government securities		34.5		(0.1	)		—		—			34.5		(0.1	)
Corporate securities		212.1		(1.4	)		—		—			212.1		(1.4	)

	$	463.4	$	(1.7	)	$	16.4	$	(3.6	)	$	479.8	$	(5.3	)

December 31, 2010
Municipal securities	$	57.5	$	(0.3	)	$	—	$	—		$	57.5	$	(0.3	)
Auction rate securities		—		—			18.6		(4.0	)		18.6		(4.0	)
Corporate securities		135.7		(0.9	)		—		—			135.7		(0.9	)
U.S. government agencies		180.9		(0.5	)		—		—			180.9		(0.5	)

	$	374.1	$	(1.7	)	$	18.6	$	(4.0	)	$	392.7	$	(5.7	)

The unrealized losses on the available-for-sale investments are related to ARS. The Company determined these unrealized losses to be temporary and recorded no other-than-temporary impairments. Factors considered in determining whether a loss is temporary included the length of time and extent to which the investments fair value has been less than the cost basis; the financial condition and near-term prospects of the investee; extent of the loss related to credit of the issuer; the expected cash flows from the security; the Company's intent to sell the security and whether or not the Company will be required to sell the security before the recovery of its amortized cost.

The following table provides reconciliation for all assets measured at fair value using significant unobservable inputs (Level 3) for the year ended December 31, 2011 (in millions):


	Fair Value Measurements at Reporting Date Using Significant Unobservable Inputs (Level 3)
	ARS
Balance at January 1, 2011	$	18.6
Sales		(2.6	)
Total gains or (losses):
Included in other comprehensive income (loss)		0.4
Included in earnings		—

Balance at December 31, 2011	$	16.4

There have been no transfers between Level 1 and Level 2 measurements during the year ended December 31, 2011, and there were no changes in the Company's valuation technique. Level 3 assets consist of municipal bonds with an auction reset feature (ARS) whose underlying assets are student loans which are substantially backed by the federal government. Since the auctions for these securities have continued to fail since February 2008, these investments are not currently trading and therefore do not have a readily determinable market value. The Company has valued the ARS using a discounted cash flow model based on Level 3 assumptions, including estimates of, based on data available as of December 31, 2011, interest rates, timing and amount of cash flows, credit and liquidity premiums and expected holding periods of the ARS.

Foreign currency derivative

The Company has $3.5 million of derivative assets recorded as prepaid and other assets in the Consolidated Balance Sheets at December 31, 2011, compared to $2.1 million of derivative liabilities recorded as other accrued liabilities at December 31, 2010. The derivative assets and liabilities are measured using Level 2 fair value inputs.

Cash Flow Hedges

The Company enters into currency forward contracts as cash flow hedges to hedge certain forecasted revenue transactions denominated in currencies other than the U.S. dollar, primarily the Euro and GBP.

As of December 31, 2011, the Company had no outstanding currency forward contracts that were entered into to hedge Euro denominated sales, compared to €21.0 million at December 31, 2010. The net gains (losses) reclassified to revenue related to the hedged revenue transactions for the years ended December 31, 2011, 2010, and 2009 were not significant. Other impacts of derivative instruments designated as cash flow hedges were not significant for the years ended December 31, 2011, 2010, and 2009.

Other Derivatives Not Designated as Hedging Instruments

Other derivatives not designated as hedging instruments consist primarily of forward contracts that the Company uses to hedge intercompany balances and other monetary assets or liabilities denominated in currencies other than the U.S. dollar, primarily the Euro, GBP, and the Swiss Franc.

As of December 31, 2011, the Company had the notional amount of €35.0 million, £1.8 million and CHF1.7 million outstanding currency forward contracts that were entered into to hedge non-functional currency denominated net monetary assets and liabilities, compared to €26.0 million and £2.2 million at December 31, 2010. For the years ended December 31, 2011 and 2010, the Company had recognized gains (losses) of approximately $(1.2) million and $3.1 million, respectively in interest and other income, net related to derivative instruments used to hedge against balance sheet foreign currency exposures. This was offset by approximately $0.3 million and $(2.6) million of net foreign exchange gains (losses) for the year ended December 31, 2011 and 2010, respectively, primarily related to the re-measurement of non-functional currency denominated net monetary assets. Impacts of derivative instruments not designated as hedges were not significant for the year ended December 31, 2009.

Balance Sheet Details

12 Months Ended

Dec. 31, 2011

Balance Sheet Details [Abstract]

Balance Sheet Details

NOTE 4. BALANCE SHEET DETAILS

The following table provides details of selected balance sheet items (in millions):


	December 31,
	2011			2010
Inventory:
Raw materials	$	34.8		$	25.6
Work-in-process		2.5			2.5
Finished goods		74.8			58.7

Total	$	112.1		$	86.8

Property, plant and equipment, net:
Land	$	72.1		$	41.8
Building and building/leasehold improvements		88.1			62.4
Machinery and equipment		68.0			57.4
Computer and office equipment		15.7			12.3
Capitalized software		50.5			38.9
Construction-in-process		11.4			34.0

		305.8			246.8
Less accumulated depreciation		(108.6	)		(87.0	)

Total property, plant and equipment, net	$	197.2		$	159.8

Other accrued liabilities—short term:
Taxes payable	$	8.5		$	19.7
Other		29.0			29.0

Total other accrued liabilities—short-term	$	37.5		$	48.7

Other long-term liabilities:
Income taxes—long term	$	95.9		$	78.4
Other long-term liabilities		1.0			0.8

Total other liabilities	$	96.9		$	79.2

Goodwill And Intangible Assets

12 Months Ended

Dec. 31, 2011

Goodwill And Intangible Assets [Abstract]

Goodwill And Intangible Assets

NOTE 5. GOODWILL AND INTANGIBLE ASSETS

Goodwill

The Company's gross carrying amount of goodwill was $116.9 million as of December 31, 2011 and 2010, respectively.

Intangibles

The gross carrying amount of total intangible assets, primarily representing purchased intellectual property, was $136.1 million and $119.3 million as of December 31, 2011 and 2010, respectively.

Additions made to intellectual property during the years ended December 31, 2011 and 2010 were $16.8 million and $27.6 million, respectively. The weighted average useful life was six years for each of the years ended December 31, 2011 and 2010. Amortization expense related to intangible assets was $17.8 million, $16.7 million and $15.6 million for the years ended December 31, 2011, 2010 and 2009, respectively. Accumulated amortization of intangible assets was $71.0 million and $53.2 million as of December 31, 2011 and 2010, respectively.

The estimated future amortization expense of intangible assets as of December 31, 2011 is as follows (in millions):


Fiscal Year	Amount
2012	$	19.0
2013		14.5
2014		10.9
2015		10.7
2016		7.7
2017 and thereafter		2.3

Total	$	65.1

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

Commitments And Contingencies

12 Months Ended

Dec. 31, 2011

Commitments And Contingencies [Abstract]

Commitments And Contingencies

NOTE 6. COMMITMENTS AND CONTINGENCIES

OPERATING LEASES

The Company leases office space in China, Japan, Mexico, Switzerland and United States. The Company leases automobiles for certain sales and field service employees. These leases have varying terms, predominantly no longer than three years.

Future minimum lease commitments under the Company's operating leases as of December 31, 2011 are as follows (in millions):


2012	$	2.7
2013		2.1
2014		1.4
2015		0.5
2016 and beyond		0.6

	$	7.3

Other commitments include an estimated amount of approximately $225.5 million of all open cancellable purchase orders and contractual obligations that occur in the ordinary course of business, including commitments with contract manufacturers and suppliers, for which we have not received the goods or services.

CONTINGENCIES

On August 6, 2010, a purported class action lawsuit entitled Perlmutter v. Intuitive Surgical et al., No. CV10-3451, was filed against the Company and seven of the Company's current and former officers and directors in the United States District Court for the Northern District of California. The lawsuit seeks unspecified damages on behalf of a putative class of persons who purchased or otherwise acquired the Company's common stock between February 1, 2008 and January 7, 2009. The complaint alleges that the defendants violated federal securities laws by making allegedly false and misleading statements and omitting certain material facts in the Company's filings with the Securities and Exchange Commission. On February 15, 2011, the Police Retirement System of St. Louis was appointed Lead Plaintiff in the case pursuant to the Private Securities Litigation Reform Act of 1995. An amended complaint was filed on April 15, 2011, making allegations substantially similar to the allegations described above. On May 23, 2011 the Company filed a motion to dismiss the amended complaint. On August 10, 2011 that motion was granted and the action was dismissed; the plaintiffs were given 30 days to file an amended complaint. On September 12, 2011, plaintiffs filed their amended complaint. The allegations contained therein are substantially similar to the allegations in the prior complaint. The Company filed a motion to dismiss the amended complaint. A hearing on that motion has not yet occurred.

On August 19, 2010, an alleged stockholder caused a purported stockholder's derivative lawsuit entitled Himmel v. Smith et al., No. 1-10-CV-180416, to be filed in the Superior Court of California for the County of Santa Clara naming the Company as a nominal defendant, and naming 14 of the Company's current and former officers and directors as defendants. The lawsuit seeks to recover, for the Company's benefit, unspecified damages purportedly sustained by the Company in connection with allegedly misleading statements and/or omissions made in connection with the Company's financial reporting for the period between February 1, 2008 and January 7, 2009. It also seeks a series of changes to the Company's corporate governance policies and an award of attorneys' fees. On September 15, 2010, another purported stockholder filed an essentially identical lawsuit entitled Applebaum v. Guthart et al., No. 1-10-CV-182645, in the same court against 15 of the Company's current and former officers and directors. On October 5, 2010 the court ordered that the two cases be consolidated for all purposes. By agreement with the plaintiffs, formal discovery has been stayed in the case.

Due to the uncertainty surrounding the litigation process, the Company is unable to reasonably estimate the ultimate outcome of the above cases at this time, and therefore no amounts have been accrued related to the outcome of the cases above. Based on currently available information, the Company believes that it has meritorious defenses to the above actions and that the resolution of these cases is not likely to have a material adverse effect on the Company's business, financial position or future results of operations.

The Company is also a party to various other legal actions that arose in the ordinary course of its business. The Company does not believe that any of these other legal actions will have a material adverse impact on its business, financial position or results of operations.

- Definition

The entire disclosure for commitments and contingencies.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 14
-Paragraph 3
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 9, 10, 11, 12
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.25)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14435-108349

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25287-109308

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6449706&loc=d3e16207-108621

+ Details

Stockholders' Equity

12 Months Ended

Dec. 31, 2011

Stockholders' Equity [Abstract]

Stockholders' Equity

NOTE 7. STOCKHOLDERS' EQUITY

STOCK REPURCHASE PROGRAM

In March 2009, the Company's Board of Directors authorized the repurchase of up to $300 million of the Company's common stock through open market and private block transactions pursuant to Rule 10b5-1 plans or privately negotiated purchases or other means, including accelerated stock repurchase transactions or similar arrangements. In connection with this stock repurchase authorization, the Company entered into a collared accelerated share repurchase program (the "ASR Program") with Goldman, Sachs & Co. ("Goldman") to repurchase $150 million of the Company's common stock.

In July 2010, the Board authorized the repurchases of an additional $150 million of the Company's common stock under the share repurchase program. In February 2011, the Board increased its authorization for stock repurchases to $400 million. In October 2011, the Board increased its authorization for stock repurchases by $500 million. As of December 31, 2011, the remaining authorized amount of share repurchases that may be made under the Board-authorized share repurchase program was approximately $568.2 million.

The following table provides the stock repurchase activities during the years ended December 31, 2011, 2010 and 2009 (in millions, except per share amounts):


	Year Ended December 31,
	2011		2010		2009
Shares repurchased		1.0		0.7		1.4
Average price per share	$	344.72	$	267.81	$	106.68
Value of shares repurchased	$	331.8	$	198.6	$	150.0

The Company uses the par value method of accounting for its stock repurchases. As a result of the share repurchases during the year ended December 31, 2011, 2010 and 2009, the Company reduced common stock and additional paid-in capital by an aggregate of $19.7 million, $24.0 million and $31.3 million, respectively, and charged $312.1 million, $174.6 million and $118.7 million, respectively, to retained earnings.

COMPREHENSIVE INCOME

The components of accumulated other comprehensive income, net of tax, are as follows (in millions):


	December 31,
	2011			2010
Foreign currency translation gains (losses)	$	(0.2	)	$	0.1
Accumulated net unrealized gains on derivatives, net of tax		—			0.2
Accumulated net unrealized gains on available-for-sale securities, net of tax		1.1			1.3

Total accumulated other comprehensive income	$	0.9		$	1.6

The components of comprehensive income and related tax effects are as follows (in millions):


	Year Ended December 31,
	2011			2010			2009
Net income	$	495.1		$	381.8		$	232.6
Foreign currency translation gains (losses)		(0.3	)		(0.3	)		0.2
Unrealized gains (losses) on derivative instruments, net of tax:
Unrealized gains (losses) on derivative instruments		0.5			0.2			(1.1	)
Reclassification adjustment for (gains) losses on derivative instruments recognized during the period		(0.7	)		—			1.1
Unrealized gains (losses) on available-for-sale securities, net of tax:
Unrealized gains (losses) arising during period		(0.2	)		0.4			4.0

Total other comprehensive income	$	494.4		$	382.1		$	236.8

- Definition

The entire disclosure for shareholders' equity, comprised of portions attributable to the parent entity and noncontrolling interest, if any, including other comprehensive income (as applicable). Including, but not limited to: (1) balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings; (2) accumulated balance for each classification of other comprehensive income and total amount of comprehensive income; (3) amount and nature of changes in separate accounts, including the number of shares authorized and outstanding, number of shares issued upon exercise and conversion, and for other comprehensive income, the adjustments for reclassifications to net income; (4) rights and privileges of each class of stock authorized; (5) basis of treasury stock, if other than cost, and amounts paid and accounting treatment for treasury stock purchased significantly in excess of market; (6) dividends paid or payable per share and in the aggregate for each class of stock for each period presented; (7) dividend restrictions and accumulated preferred dividends in arrears (in aggregate and per share amount); (8) retained earnings appropriations or restrictions, such as dividend restrictions; (9) impact of change in accounting principle, initial adoption of new accounting principle and correction of an error in previously issued financial statements; (10) shares held in trust for Employee Stock Ownership Plan (ESOP); (11) deferred compensation related to issuance of capital stock; (12) note received for issuance of stock; (13) unamortized discount on shares; (14) description, terms, and number of warrants or rights outstanding; (15) shares under subscription and subscription receivables, effective date of new retained earnings after quasi-reorganization and deficit eliminated by quasi-reorganization and, for a period of at least ten years after the effective date, the point in time from which the new retained dates; and (16) retroactive effective of subsequent change in capital structure.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
-Paragraph 10
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 4
-Section 08
-Paragraph d

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 43
-Chapter 1
-Section B
-Paragraph 7, 11A
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 2, 3, 4, 5, 6, 7, 8
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Article 4

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 15
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30, 31
-Article 5

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section E

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section C

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644

Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21488-112644

Reference 17: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(d),(e))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 18: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644

Reference 19: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656

Reference 20: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 4.E)
-URI http://asc.fasb.org/extlink&oid=6228006&loc=d3e74512-122707

Reference 21: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Preferred Stock
-URI http://asc.fasb.org/extlink&oid=6521494

Reference 22: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29-31)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 23: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB TOPIC 4.C)
-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187143-122770

+ Details

Stock-Based Compensation

12 Months Ended

Dec. 31, 2011

Stock-Based Compensation [Abstract]

Stock-Based Compensation

NOTE 8. STOCK-BASED COMPENSATION

STOCK OPTION PLANS

2010 Incentive Award Plan

In April 2010, the Company's stockholders approved the 2010 Incentive Award Plan ("2010 Plan"). Under this plan, the Company issues nonqualified stock options ("NSOs") to employees and certain consultants. The 2010 Plan generally permits NSOs to be granted at no less than the fair market value of the common stock on the date of grant, with terms of 10 years from the date of grant. Options generally vest 12.5% upon completion of 6 months service and 1/48^th per month thereafter; however, options may have different vesting terms as determined by the Board of Directors. The 2010 Plan expires in 2020. As of December 31, 2011, approximately 1.4 million shares were reserved for future issuance under the 2010 Plan.

2009 Employment Commencement Incentive Plan

In October 2009, the Board of Directors adopted the 2009 Employment Commencement Incentive Plan ("New Hire Plan"). The New Hire Plan provides for the shares to be used exclusively for the grant of NSOs to new employees, who were not previously an employee or non-employee director of the Company. Options are granted at an exercise price not less than the fair market value of the stock on the date of grant and have a term not to exceed ten years. As of December 31, 2011, approximately 47,000 shares were reserved for future issuance under the New Hire Plan.

2000 Equity Incentive Plan

In March 2000, the Board of Directors adopted the 2000 Equity Incentive Plan ("2000 Plan"), which took effect upon the closing of the Company's initial public offering. Under this plan, certain employees, consultants and non-employee directors may be granted Incentive Stock Options ("ISOs") and Nonstatutory Stock Options ("NSOs") to purchase shares of the Company's common stock. The 2000 Plan permitted ISOs to be granted at an exercise price not less than the fair value on the date of the grant and NSOs at an exercise price not less than 85% of the fair value on the date of grant. Options granted under the 2000 Plan generally expire 10 years from the date of grant and become exercisable upon grant subject to repurchase rights in favor of the Company until vested. Options generally vest 12.5% upon completion of 6 months service and 1/48^th per month thereafter; however, options may have been granted with different vesting terms as determined by the Board of Directors. The 2000 Plan expired in March 2010. However, options granted prior to the plan's expiration continue to vest or remain outstanding until their original expiration date.

2000 Non-Employee Directors' Stock Option Plan

In March 2000, the Board of Directors adopted the 2000 Non-Employee Directors' Stock Option Plan (the "Directors' Plan"). In October 2009, the automatic evergreen increase provisions were eliminated so that no further automatic increases will be made to the number of shares reserved for issuance under the Directors' Plan. In addition, the common stock authorized for issuance under the Directors' Plan was reduced to 150,000. Options are granted at an exercise price not less than the fair market value of the stock on the date of grant and have a term not to exceed 10 years. Initial grants are vested over a three-year period with 33.3% of the shares vesting after 1 year from the date of grant and 1/36^th of the shares vesting monthly thereafter. Annual grants are vested one year from the date of the grant. The Directors' Plan expires in March 2013. As of December 31, 2011, approximately 99,000 shares were reserved for future issuance under the Directors' Plan.

2000 Employee Stock Purchase Plan

In March 2000, the Board of Directors adopted the 2000 Employee Stock Purchase Plan (ESPP). Employees are generally eligible to participate in the ESPP if they are customarily employed by the Company for more than 20 hours per week and more than 5 months in a calendar year and are not 5% stockholders of the Company. Under the ESPP, eligible employees may select a rate of payroll deduction up to 15% of their eligible compensation subject to certain maximum purchase limitations. The duration for each offering period is twenty-four months long and is divided into four shorter purchase periods approximately six months in length. Offerings are concurrent. The purchase price of the shares under the offering is the lesser of 85% of the fair market value of the shares on the offering date or 85% of the fair market value of the shares on the purchase date. A two-year look-back feature in the ESPP causes the offering period to reset if the fair value of the Company's common stock on the first or last day of the purchase period is less than that on the original offering date. ESPP purchases by employees are settled with newly-issued common stock from the ESPP's previously authorized and available pool of shares.

The Company issued 0.1 million, 0.1 million and 0.1 million shares under the ESPP, representing approximately $18.5 million, $14.3 million and $8.0 million in employee contributions for the years ended December 31, 2011, 2010 and 2009, respectively. As of December 31, 2011, there were approximately 0.6 million shares reserved for grant under the ESPP.

STOCK OPTION PLAN INFORMATION

Option activity during fiscal 2011 under all the stock plans were as follows (in millions, except per share amounts):


				STOCK OPTIONS OUTSTANDING
	Shares Available for Grant			Number Outstanding			Weighted Average Exercise Price Per Share
Balance at December 31, 2010 (with 2.5 options exerciseable at a weighted-average exercise price of $173.49 per share and with 4.7 options vested and expected to vest at a weighted-average exercise price of $207.79 per share)		1.4			4.8		$	209.03
Options authorized		1.4
Options granted		(1.3	)		1.3			345.96
Options exercised					(1.3	)		182.28
Options canceled/expired		0.1			(0.1	)		282.54

Balance at December 31, 2011 (with 2.4 options exerciseable at a weighted-average exercise price of $212.43 per share and with 4.5 options vested and expected to vest at a weighted-average exercise price of $252.57 per share)		1.6			4.7		$	254.19

The aggregate intrinsic value of options exercised under our stock option plans determined as of the date of option exercise was $262.8 million, $192.9 million, and $94.9 million during the years ended December 31, 2011, 2010, and 2009, respectively. Cash received from option exercises and employee stock purchase plans for the years ended December 31, 2011, 2010 and 2009 was $260.6 million, $141.1 million and $58.7 million, respectively.

The following table summarizes significant ranges of outstanding and exercisable options as of December 31, 2011:


	Options Outstanding								Options Exercisable
Range of Exercise Prices	Number of Shares		Weighted Average Remaining Contractual Life		Weighted Average Exercise Price Per Share		Aggregate Intrinsic Value (1)		Number of Shares		Weighted Average Remaining Contractual Life		Weighted Average Exercise Price Per Share		Aggregate Intrinsic Value (1)
$0.00–107.27		1.1		5.82	$	94.30				0.8			$	88.94
$107.65–$303.27		1.3		6.27		236.08				1.0				232.44
$308.96–334.30		1.0		8.11		331.22				0.4				330.44
$341.19–439.88		1.3		9.11		349.46				0.2				345.04

TOTAL		4.7		7.34	$	254.19	$	973.0		2.4		6.30	$	212.43	$	602.1

(1)	The aggregate intrinsic value represents the total pre-tax intrinsic value, based on the Company's closing stock price of $463.01 as of December 31, 2011, which would have been received by the option holders had all in-the-money option holders exercised their options as of that date.

As of December 31, 2011, the shares vested and expected to vest had a weighted average remaining contractual life of 7.31 years and aggregate intrinsic value of $957.5 million.

STOCK-BASED COMPENSATION

The following table summarizes stock-based compensation charges:


	Year Ended December 31,
	2011		2010		2009
Cost of sales—products	$	12.3	$	9.6	$	7.7
Cost of sales—services		11.0		8.4		6.6

Total cost of sales		23.3		18.0		14.3
Selling, general and administrative		84.3		77.0		61.3
Research and development		28.8		22.6		21.4

Stock-based compensation expense before income taxes		136.4		117.6		97.0
Income tax effect		42.9		39.2		26.5

Stock-based compensation expense after income taxes	$	93.5	$	78.4	$	70.5

The Black-Scholes option pricing model is used to estimate the fair value of stock options granted under the Company's stock-based compensation plans and rights to acquire stock granted under the Company's employee stock purchase plan. The weighted average estimated fair values of the stock options and rights to acquire stock granted under the Company's employee purchase plan as well as the weighted average assumptions used in calculating these values during the years ended December 31, 2011, 2010 and 2009, were based on estimates at the date of grant as follows:


	Year Ended December 31,
STOCK OPTION PLANS	2011			2010			2009
Average risk free interest rate		2.16	%		2.24	%		1.76	%
Average expected term (years)		4.75			4.80			5.28
Average volatility		35	%		36	%		55	%
Weighted average fair value at grant date	$	116.03		$	111.84		$	59.53
Total stock-based compensation expense (in millions)	$	128.3		$	109.1		$	90.3

EMPLOYEE STOCK PURCHASE PLAN
Average risk free interest rate		0.32	%		0.43	%		0.63	%
Average expected term (years)		1.30			1.30			1.30
Average volatility		33	%		39	%		56	%
Weighted average fair value at grant date	$	99.94		$	106.72		$	51.23
Total stock-based compensation expense (in millions)	$	8.1		$	8.5		$	6.7

As stock-based compensation expense recognized in the Consolidated Statements of Income during the years ended December 31, 2011, 2010 and 2009 is based on awards ultimately expected to vest, it has been reduced for estimated forfeitures. Stock compensation accounting requires forfeitures to be estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimated.

As of December 31, 2011, there was $229.0 million and $9.4 million, of total unrecognized compensation expense related to non-vested stock options and employee stock purchases, respectively. The unrecognized compensation expenses are expected to be recognized over a weighted average period of 2.5 years for non-vested stock options and 1.2 years for employee stock purchases.

Excess tax benefits are realized tax benefits from tax deductions for exercised options in excess of the deferred tax asset attributable to stock compensation costs for such options. Excess tax benefits of $58.8 million, $65.2 million, and $25.1 million for the years ended December 31, 2011, 2010 and 2009, respectively, have been classified as a financing cash inflow. The total income tax benefit recognized in the income statement for stock-based compensation costs was $42.9 million, $39.2 million and $26.5 million for the years ended December 31, 2011, 2010 and 2009, respectively.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph 64, 65, A240
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 93-6
-Paragraph 53
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 50
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929

+ Details

Income Taxes

12 Months Ended

Dec. 31, 2011

Income Taxes [Abstract]

Income Taxes

NOTE 9. INCOME TAXES

Income before provision for income taxes for the years ended December 31, 2011, 2010 and 2009 consisted of the following (in millions):


	Year Ended December 31,
	2011		2010		2009
U.S	$	540.3	$	438.7	$	334.5
Foreign		169.4		133.6		61.6

Total income before provision for income taxes	$	709.7	$	572.3	$	396.1

The provision for income taxes for the years ended December 31, 2011, 2010 and 2009 consisted of the following (in millions):


	Year Ended December 31,
	2011			2010			2009
Current
Federal	$	195.7		$	189.9		$	159.0
State		8.1			20.0			19.1
Foreign		3.7			2.1			1.0

	$	207.5		$	212.0		$	179.1

Deferred
Federal	$	6.8		$	(22.2	)	$	(16.0	)
State		0.4			0.5			0.3
Foreign		(0.1	)		0.2			0.1

	$	7.1		$	(21.5	)	$	(15.6	)

Total income tax expense	$	214.6		$	190.5		$	163.5

Income tax expense differs from amounts computed by applying the statutory rate of 35% for the years ended December 31, 2011, 2010 and 2009 as a result of the following (in millions):


	Year Ended December 31,
	2011			2010			2009
Federal tax at statutory rate	$	248.3		$	200.3		$	138.6
Increase (reduction) in tax resulting from:
State taxes, net of federal benefits		8.5			20.5			19.4
Foreign rate differential		(47.7	)		(31.3	)		—
Research and development credit		(6.6	)		(4.6	)		(2.6	)
Stock compensation not benefitted		5.1			4.8			3.9
Other		7.0			0.8			4.2

	$	214.6		$	190.5		$	163.5

Deferred income taxes reflect tax carry forwards and the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting and the amounts used for income tax purposes. Significant components of the Company's deferred tax assets are as follows (in millions):


	December 31,
	2011			2010
Deferred tax assets:
Stock-based compensation expense	$	69.2		$	65.0
Expenses deducted in later years for tax purposes		19.6			21.1
Research and other credits		2.1			—
Other		0.5			0.2

Gross deferred tax assets	$	91.4		$	86.3
Valuation allowance		(2.8	)		—

Deferred tax assets		88.6			86.3

Deferred tax liabilities:
Fixed assets	$	(11.8	)	$	—
Other		(1.5	)		(4.5	)

Deferred tax liabilities	$	(13.3	)	$	(4.5	)

Net deferred tax assets	$	75.3		$	81.8

The Company has not provided U.S. income taxes and foreign withholding taxes on the undistributed earnings of foreign subsidiaries as of December 31, 2011 because the Company intends to permanently reinvest such earnings outside the U.S. If these foreign earnings were to be repatriated in the future, the related U.S. tax liability may be reduced by any foreign income taxes previously paid on these earnings. As of December 31, 2011, the cumulative amount of earnings upon which U.S. income taxes have not been provided is approximately $220.5 million. Determination of the amount of unrecognized deferred tax liability related to these earnings is not practicable. The Company has a tax holiday in effect for its business operations in Switzerland which will last until the end of year 2017. This tax holiday provides for a lower rate of taxation in Switzerland based on various thresholds of investment and employment in such jurisdiction. The Company has been in compliance with the terms of the holiday.

The valuation allowance of $2.8 million for the year ended December 31, 2011 was primarily related to California deferred tax assets. The Company anticipates significant reduction in its California taxes under the single sales factor election for year 2011 and subsequent years if California law remains consistent. As a result, the Company recorded a valuation allowance against its California deferred tax assets as it is more likely than not these deferred tax assets will not be realized.

The Company recorded a net increase of its gross unrecognized tax benefits of approximately $19.2 million during the year ended December 31, 2011. The Company had gross unrecognized tax benefits of approximately $98.1 million, $78.9 million and $70.0 million as of December 31, 2011, 2010 and 2009, respectively, of which $93.8 million, 74.7 million and $65.7 million, if recognized would result in a reduction of the Company's effective tax rate during the years ended December 31, 2011, 2010 and 2009, respectively. The Company included interest expense and penalties accrued on unrecognized tax benefits as a component of its income tax expense. As of December 31, 2011, 2010 and 2009, gross interest related to unrecognized tax benefits accrued was approximately $7.9 million, $5.5 million and $3.3 million, respectively, and an increase of $2.4 million was included in our income tax expense for the year ended December 31, 2011. The Company classified its net unrecognized tax benefits and related interest in "Other accrued liabilities" on the Consolidated Balance Sheet.

A reconciliation of the beginning and ending amounts of gross unrecognized income tax benefits for the years ended December 31, 2011, 2010 and 2009 are as follows (in millions):


	Year Ended December 31,
	2011		2010			2009
Beginning balance	$	78.9	$	70.0		$	42.0
Additions for tax positions related to current year		18.1		9.1			24.9
Increase (decrease) for tax positions related to prior year		1.1		(0.2	)		3.1

Ending balance	$	98.1	$	78.9		$	70.0

The Company files federal, state and foreign income tax returns in many jurisdictions in the United States and abroad. For U.S. federal and California income tax purposes, the statute of limitation currently remains open for all years since inception due to utilization of net operating losses and research and development credits generated in prior years. Certain of the Company's unrecognized tax benefits could reverse based on the normal expiration of various statutes of limitations, which could affect the Company's effective tax rate in the period in which they reverse.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 136, 172
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 43, 44, 45, 46, 47, 48, 49
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319

+ Details

Net Income Per Share

12 Months Ended

Dec. 31, 2011

Net Income Per Share [Abstract]

Net Income Per Share

NOTE 10. NET INCOME PER SHARE

The following table presents the computation of basic and diluted net income per share (in millions, except per share amounts):


	Year Ended December 31,
	2011		2010		2009
Net income	$	495.1	$	381.8	$	232.6
Basic:
Weighted-average shares outstanding		39.2		39.2		38.3

Basic net income per share	$	12.63	$	9.74	$	6.07

Diluted:
Weighted-average shares outstanding used in basic calculation		39.2		39.2		38.3
Add dilutive potential shares		1.0		1.1		0.9

Weighted-average shares used in computing diluted net income per share		40.2		40.3		39.2

Diluted net income per share	$	12.32	$	9.47	$	5.93

Employee stock options to purchase approximately 2.1 million, 1.3 million and 1.5 million shares for the years ended December 31, 2011, 2010 and 2009, respectively, were outstanding, but were not included in the computation of diluted net income per share because the effect of including such shares would have been antidilutive in the periods presented.

Employee Benefit Plans	12 Months Ended
Employee Benefit Plans	Dec. 31, 2011
Employee Benefit Plans [Abstract]
Employee Benefit Plans	NOTE 11. EMPLOYEE BENEFIT PLANS The Company sponsors various retirement plans for its eligible U.S. and non-U.S. employees. For employees in the U.S., the Company maintains the Intuitive Surgical, Inc. 401(k) Plan (the "Plan"). As allowed under Section 401(k) of the Internal Revenue Code, the Plan provides tax-deferred salary contributions for eligible U.S. employees. The Plan allows employees to contribute up to 75% of their annual compensation to the Plan on a pretax and after-tax basis. Employee contributions are limited to a maximum annual amount as set periodically by the Internal Revenue Code. Employer matching contributions are made solely at the Company's discretion. No employer matching contributions were made to the Plan during the years ended December 31, 2011, 2010 and 2009.

Subsequent Event	12 Months Ended
Subsequent Event	Dec. 31, 2011
Subsequent Event [Abstract]
Subsequent Event	NOTE 12. SUBSEQUENT EVENT On January 11, 2012, we completed the acquisition of our Korean distributor. The total purchase consideration of the acquisition was not material, and the acquisition is not expected to have a material impact on our future results of operations.

Selected Quarterly Data

12 Months Ended

Dec. 31, 2011

Selected Quarterly Data [Abstract]

Selected Quarterly Data

SELECTED QUARTERLY DATA

(UNAUDITED, IN MILLIONS, EXCEPT PER SHARE AMOUNTS)


	2011
	Q1		Q2		Q3		Q4
Revenue	$	388.1	$	425.7	$	446.7	$	496.8
Gross profit	$	278.8	$	306.6	$	325.5	$	362.9
Net income	$	104.1	$	117.4	$	122.4	$	151.2
Net income per common share
Basic	$	2.66	$	2.99	$	3.13	$	3.86
Diluted	$	2.59	$	2.91	$	3.05	$	3.75

	2010
	Q1		Q2		Q3		Q4
Revenue	$	328.6	$	350.7	$	344.4	$	389.3
Gross profit	$	240.5	$	256.8	$	250.6	$	282.1
Net income	$	85.3	$	88.7	$	86.6	$	121.2
Net income per common share
Basic	$	2.20	$	2.26	$	2.20	$	3.10
Diluted	$	2.12	$	2.19	$	2.14	$	3.02

- Definition

The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.

+ References + Details

Valuation And Qualifying Accounts

12 Months Ended

Dec. 31, 2011

Valuation And Qualifying Accounts [Abstract]

Valuation And Qualifying Accounts

SCHEDULE II

INTUITIVE SURGICAL, INC.

VALUATION AND QUALIFYING ACCOUNTS

(IN MILLIONS)


	Balance at Beginning of Year		Additions		Deductions (1)			Balance at End of Year
Allowance for doubtful accounts and sales returns
Year ended December 31, 2011	$	4.8		12.3		(11.5	)	$	5.6
Year ended December 31, 2010	$	4.3		11.3		(10.8	)	$	4.8
Year ended December 31, 2009	$	4.1		10.2		(10.0	)	$	4.3

(1)	Primarily represents amounts returned.

Summary Of Significant Accounting Policies (Policy)

12 Months Ended

Dec. 31, 2011

Summary Of Significant Accounting Policies [Abstract]

Basis Of Presentation

Basis of Presentation

Certain prior year amounts in the consolidated financial statements and notes thereto have been reclassified to conform to the current year's presentation.

Use Of Estimates

Use of Estimates

Concentrations Of Credit Risk And Other Risks And Uncertainties

Concentrations of Credit Risk and Other Risks and Uncertainties

Cash And Cash Equivalents

Cash and Cash Equivalents

The Company considers all highly liquid investments with an original maturity from date of purchase of 90 days or less to be cash equivalents.

Investments

Investments

Fair Value Measurements

Fair Value Measurements

Allowance For Sales Returns And Doubtful Accounts

Allowance for Sales Returns and Doubtful Accounts

Inventory

Inventory

Property, Plant And Equipment

Property, Plant and Equipment


		Useful Lives
Building		up to 30 years
Building improvements		up to 15 years
Leasehold improvements		Lesser of useful life or term of lease
Equipment and furniture		5years
Computer equipment		3years
Enterprise-wide software		up to 5 years
Purchased software		Lesser of 3 years or life of license

Depreciation expense for years ended December 31, 2011, 2010 and 2009 was $28.7 million, $23.7 million and $19.0 million, respectively.

Capitalized Software Costs For Internal Use

Capitalized Software Costs for Internal Use

Goodwill And Intangible Assets

Goodwill and Intangible Assets

Impairment Of Long-Lived Assets

Impairment of Long-lived assets

Revenue Recognition

Revenue Recognition

•

Had the new accounting guidance been applied to revenue at the beginning of 2009, the resultant revenue for the year ended December 31, 2009 would have been substantially the same.

Stock-Based Compensation

Stock-Based Compensation

Risk-Free Interest Rate: The risk-free interest rate is based on the U.S. Treasury yield curve in effect at the time of grant for the expected term of the option.

See Note 8 for a detailed discussion of our stock-based employee compensation plans and stock-compensation expense.

Computation Of Net Income Per Share

Computation of Net Income per Share

Shipping And Handling Costs

Shipping and Handling Costs

Costs incurred for shipping and handling are included in cost of revenue at the time the related revenue is recognized. Amounts billed to customers for shipping and handling are reported as revenue.

Research And Development Expenses

Research and Development Expenses

Foreign Currency And Other Hedging Instruments

Foreign Currency and Other Hedging Instruments

Derivatives that are not designated as hedging instruments and the ineffective portions of cash flow hedges are adjusted to fair value through earnings in interest and other income, net.

Income Taxes

Income Taxes

Segments

Segments

Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2011

Summary Of Significant Accounting Policies [Abstract]

Property, Plant And Equipment, Estimated Useful Lives


		Useful Lives
Building		up to 30 years
Building improvements		up to 15 years
Leasehold improvements		Lesser of useful life or term of lease
Equipment and furniture		5years
Computer equipment		3years
Enterprise-wide software		up to 5 years
Purchased software		Lesser of 3 years or life of license

Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2011

Dec. 31, 2010

Financial Instruments [Abstract]

Summary Of Company's Cash, Cash Equivalents Or Short-Term Or Long-Term Investments


	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Cash and Cash Equivalents		Short-term Investments		Long-term Investments
December 31, 2011
Cash	$	51.6	$	—	$	—		$	51.6	$	51.6	$	—	$	—
Level 1:
Money market funds		403.2		—		—			403.2		403.2		—		—
US Treasuries & corporate equity securities		183.9		0.5		—			184.4		—		130.5		53.9

Subtotal		587.1		0.5		—			587.6		403.2		130.5		53.9

Level 2:
Commercial paper		63.5		—		—			63.5		11.0		52.5		—
Corporate securities		586.6		3.0		(1.4	)		588.2		—		162.4		425.8
US government agencies		521.1		1.4		(0.1	)		522.4		—		126.6		395.8
Non-US government securities		68.7		0.4		(0.1	)		69.0		—		1.3		67.7
Municipal securities		272.1		1.1		(0.1	)		273.1		—		90.1		183.0

Subtotal		1,512.0		5.9		(1.7	)		1,516.2		11.0		432.9		1,072.3

Level 3:
Municipal securities		20.0		—		(3.6	)		16.4		—		—		16.4

Subtotal		20.0		—		(3.6	)		16.4		—		—		16.4

Total	$	2,170.7	$	6.4	$	(5.3	)	$	2,171.8	$	465.8	$	563.4	$	1,142.6


	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Cash and Cash Equivalents		Short-term Investments		Long-term Investments
December 31, 2010
Cash	$	20.1	$	—	$	—		$	20.1	$	20.1	$	—	$	—
Level 1:
Money market funds		211.2		—		—			211.2		211.2		—		—
US Treasuries		116.2		0.1		—			116.3		—		76.3		40.0

Subtotal		327.4		0.1		—			327.5		211.2		76.3		40.0

Level 2:
Commercial paper		122.5		—		—			122.5		43.5		79.0		—
Corporate securities		474.6		3.1		(0.9	)		476.8		—		175.4		301.4
US government agencies		389.0		0.6		(0.4	)		389.2		5.0		187.7		196.5
Non-US government securities		21.1		0.1		(0.1	)		21.1		—		—		21.1
Municipal securities		232.7		0.7		(0.3	)		233.1		—		112.2		120.9

Subtotal		1,239.9		4.5		(1.7	)		1,242.7		48.5		554.3		639.9

Level 3:
Municipal securities		22.6		—		(4.0	)		18.6		—		—		18.6

Subtotal		22.6		—		(4.0	)		18.6		—		—		18.6

Total	$	1,610.0	$	4.6	$	(5.7	)	$	1,608.9	$	279.8	$	630.6	$	698.5

Schedule Of Maturities Of Cash Equivalents And Available-For-Sale Debt Investments


	Amortized Cost		Fair Value
Mature in less than one year	$	976.2	$	976.7
Mature in one to five years		1,122.3		1,126.1
Mature in more than five years		20.0		16.4

Total	$	2,118.5	$	2,119.2

Schedule Of Available-For-Sale Investments With Unrealized Losses


	Unrealized losses less than 12 months					Unrealized losses 12 months or greater					Total
December 31, 2011	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
U.S. government agencies		168.8		(0.1	)		—		—			168.8		(0.1	)
Municipal securities		48.0		(0.1	)		—		—			48.0		(0.1	)
Auction rate securities		—		—			16.4		(3.6	)		16.4		(3.6	)
Non-U.S. government securities		34.5		(0.1	)		—		—			34.5		(0.1	)
Corporate securities		212.1		(1.4	)		—		—			212.1		(1.4	)

	$	463.4	$	(1.7	)	$	16.4	$	(3.6	)	$	479.8	$	(5.3	)

December 31, 2010
Municipal securities	$	57.5	$	(0.3	)	$	—	$	—		$	57.5	$	(0.3	)
Auction rate securities		—		—			18.6		(4.0	)		18.6		(4.0	)
Corporate securities		135.7		(0.9	)		—		—			135.7		(0.9	)
U.S. government agencies		180.9		(0.5	)		—		—			180.9		(0.5	)

	$	374.1	$	(1.7	)	$	18.6	$	(4.0	)	$	392.7	$	(5.7	)

Schedule Of Reconciliation For All Assets Measured At Fair Value Using Significant Unobservable Inputs (Level 3)


	Fair Value Measurements at Reporting Date Using Significant Unobservable Inputs (Level 3)
	ARS
Balance at January 1, 2011	$	18.6
Sales		(2.6	)
Total gains or (losses):
Included in other comprehensive income (loss)		0.4
Included in earnings		—

Balance at December 31, 2011	$	16.4

- Definition

Tabular disclosure of available-for-sale securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 03-1
-Paragraph 21
-Subparagraph a, b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS115-1/124-1
-Paragraph 17
-Subparagraph a, b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 19, 20, 21
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27337-111563

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27198-111563

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27161-111563

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 320
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27357-111563

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27290-111563

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 320
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62586-112803

+ Details

- Definition

Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income, and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issuances, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.

+ References + Details

Balance Sheet Details (Tables)

12 Months Ended

Dec. 31, 2011

Balance Sheet Details [Abstract]

Details Of Selected Balance Sheet Items


	December 31,
	2011			2010
Inventory:
Raw materials	$	34.8		$	25.6
Work-in-process		2.5			2.5
Finished goods		74.8			58.7

Total	$	112.1		$	86.8

Property, plant and equipment, net:
Land	$	72.1		$	41.8
Building and building/leasehold improvements		88.1			62.4
Machinery and equipment		68.0			57.4
Computer and office equipment		15.7			12.3
Capitalized software		50.5			38.9
Construction-in-process		11.4			34.0

		305.8			246.8
Less accumulated depreciation		(108.6	)		(87.0	)

Total property, plant and equipment, net	$	197.2		$	159.8

Other accrued liabilities—short term:
Taxes payable	$	8.5		$	19.7
Other		29.0			29.0

Total other accrued liabilities—short-term	$	37.5		$	48.7

Other long-term liabilities:
Income taxes—long term	$	95.9		$	78.4
Other long-term liabilities		1.0			0.8

Total other liabilities	$	96.9		$	79.2

Goodwill And Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2011

Goodwill And Intangible Assets [Abstract]

Schedule Of Estimated Future Amortization Expense Of Intangible Assets


Fiscal Year	Amount
2012	$	19.0
2013		14.5
2014		10.9
2015		10.7
2016		7.7
2017 and thereafter		2.3

Total	$	65.1

Commitments And Contingencies (Tables)

12 Months Ended

Dec. 31, 2011

Commitments And Contingencies [Abstract]

Schedule Of Future Minimum Lease Commitments Under Operating Leases


2012	$	2.7
2013		2.1
2014		1.4
2015		0.5
2016 and beyond		0.6

	$	7.3

Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2011

Stockholders' Equity [Abstract]

Schedule Of Stock Repurchase Activities


	Year Ended December 31,
	2011		2010		2009
Shares repurchased		1.0		0.7		1.4
Average price per share	$	344.72	$	267.81	$	106.68
Value of shares repurchased	$	331.8	$	198.6	$	150.0

Components Of Accumulated Other Comprehensive Income


	December 31,
	2011			2010
Foreign currency translation gains (losses)	$	(0.2	)	$	0.1
Accumulated net unrealized gains on derivatives, net of tax		—			0.2
Accumulated net unrealized gains on available-for-sale securities, net of tax		1.1			1.3

Total accumulated other comprehensive income	$	0.9		$	1.6

Components Of Comprehensive Income, Net Of Tax


	Year Ended December 31,
	2011			2010			2009
Net income	$	495.1		$	381.8		$	232.6
Foreign currency translation gains (losses)		(0.3	)		(0.3	)		0.2
Unrealized gains (losses) on derivative instruments, net of tax:
Unrealized gains (losses) on derivative instruments		0.5			0.2			(1.1	)
Reclassification adjustment for (gains) losses on derivative instruments recognized during the period		(0.7	)		—			1.1
Unrealized gains (losses) on available-for-sale securities, net of tax:
Unrealized gains (losses) arising during period		(0.2	)		0.4			4.0

Total other comprehensive income	$	494.4		$	382.1		$	236.8

Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2011

Stock-Based Compensation [Abstract]

Summary Of Stock Option Activity Under All Stock Plans


				STOCK OPTIONS OUTSTANDING
	Shares Available for Grant			Number Outstanding			Weighted Average Exercise Price Per Share
Balance at December 31, 2010 (with 2.5 options exerciseable at a weighted-average exercise price of $173.49 per share and with 4.7 options vested and expected to vest at a weighted-average exercise price of $207.79 per share)		1.4			4.8		$	209.03
Options authorized		1.4
Options granted		(1.3	)		1.3			345.96
Options exercised					(1.3	)		182.28
Options canceled/expired		0.1			(0.1	)		282.54

Balance at December 31, 2011 (with 2.4 options exerciseable at a weighted-average exercise price of $212.43 per share and with 4.5 options vested and expected to vest at a weighted-average exercise price of $252.57 per share)		1.6			4.7		$	254.19

Summary Of Significant Ranges Of Outstanding And Exercisable Options


	Options Outstanding								Options Exercisable
Range of Exercise Prices	Number of Shares		Weighted Average Remaining Contractual Life		Weighted Average Exercise Price Per Share		Aggregate Intrinsic Value (1)		Number of Shares		Weighted Average Remaining Contractual Life		Weighted Average Exercise Price Per Share		Aggregate Intrinsic Value (1)
$0.00–107.27		1.1		5.82	$	94.30				0.8			$	88.94
$107.65–$303.27		1.3		6.27		236.08				1.0				232.44
$308.96–334.30		1.0		8.11		331.22				0.4				330.44
$341.19–439.88		1.3		9.11		349.46				0.2				345.04

TOTAL		4.7		7.34	$	254.19	$	973.0		2.4		6.30	$	212.43	$	602.1

(1)	The aggregate intrinsic value represents the total pre-tax intrinsic value, based on the Company's closing stock price of $463.01 as of December 31, 2011, which would have been received by the option holders had all in-the-money option holders exercised their options as of that date.

Summary Of Stock-Based Compensation Charges


	Year Ended December 31,
	2011		2010		2009
Cost of sales—products	$	12.3	$	9.6	$	7.7
Cost of sales—services		11.0		8.4		6.6

Total cost of sales		23.3		18.0		14.3
Selling, general and administrative		84.3		77.0		61.3
Research and development		28.8		22.6		21.4

Stock-based compensation expense before income taxes		136.4		117.6		97.0
Income tax effect		42.9		39.2		26.5

Stock-based compensation expense after income taxes	$	93.5	$	78.4	$	70.5

Schedule Of Estimated Fair Value Of The Option Using Black-Scholes Option Pricing Model, Weighted Average Assumptions


	Year Ended December 31,
STOCK OPTION PLANS	2011			2010			2009
Average risk free interest rate		2.16	%		2.24	%		1.76	%
Average expected term (years)		4.75			4.80			5.28
Average volatility		35	%		36	%		55	%
Weighted average fair value at grant date	$	116.03		$	111.84		$	59.53
Total stock-based compensation expense (in millions)	$	128.3		$	109.1		$	90.3

EMPLOYEE STOCK PURCHASE PLAN
Average risk free interest rate		0.32	%		0.43	%		0.63	%
Average expected term (years)		1.30			1.30			1.30
Average volatility		33	%		39	%		56	%
Weighted average fair value at grant date	$	99.94		$	106.72		$	51.23
Total stock-based compensation expense (in millions)	$	8.1		$	8.5		$	6.7

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2011

Income Taxes [Abstract]

Schedule Of Income Before Provision For Income Taxes


	Year Ended December 31,
	2011		2010		2009
U.S	$	540.3	$	438.7	$	334.5
Foreign		169.4		133.6		61.6

Total income before provision for income taxes	$	709.7	$	572.3	$	396.1

Schedule Of Provision For Income Taxes


	Year Ended December 31,
	2011			2010			2009
Current
Federal	$	195.7		$	189.9		$	159.0
State		8.1			20.0			19.1
Foreign		3.7			2.1			1.0

	$	207.5		$	212.0		$	179.1

Deferred
Federal	$	6.8		$	(22.2	)	$	(16.0	)
State		0.4			0.5			0.3
Foreign		(0.1	)		0.2			0.1

	$	7.1		$	(21.5	)	$	(15.6	)

Total income tax expense	$	214.6		$	190.5		$	163.5

Schedule Of Income Tax Difference From The Statutory Rate


	Year Ended December 31,
	2011			2010			2009
Federal tax at statutory rate	$	248.3		$	200.3		$	138.6
Increase (reduction) in tax resulting from:
State taxes, net of federal benefits		8.5			20.5			19.4
Foreign rate differential		(47.7	)		(31.3	)		—
Research and development credit		(6.6	)		(4.6	)		(2.6	)
Stock compensation not benefitted		5.1			4.8			3.9
Other		7.0			0.8			4.2

	$	214.6		$	190.5		$	163.5

Schedule Of Deferred Tax Assets


	December 31,
	2011			2010
Deferred tax assets:
Stock-based compensation expense	$	69.2		$	65.0
Expenses deducted in later years for tax purposes		19.6			21.1
Research and other credits		2.1			—
Other		0.5			0.2

Gross deferred tax assets	$	91.4		$	86.3
Valuation allowance		(2.8	)		—

Deferred tax assets		88.6			86.3

Deferred tax liabilities:
Fixed assets	$	(11.8	)	$	—
Other		(1.5	)		(4.5	)

Deferred tax liabilities	$	(13.3	)	$	(4.5	)

Net deferred tax assets	$	75.3		$	81.8

Schedule Of Gross Unrecognized Income Tax Benefits


	Year Ended December 31,
	2011		2010			2009
Beginning balance	$	78.9	$	70.0		$	42.0
Additions for tax positions related to current year		18.1		9.1			24.9
Increase (decrease) for tax positions related to prior year		1.1		(0.2	)		3.1

Ending balance	$	98.1	$	78.9		$	70.0

Net Income Per Share (Tables)

12 Months Ended

Dec. 31, 2011

Net Income Per Share [Abstract]

Computation Of Basic And Diluted Net Income Per Share


	Year Ended December 31,
	2011		2010		2009
Net income	$	495.1	$	381.8	$	232.6
Basic:
Weighted-average shares outstanding		39.2		39.2		38.3

Basic net income per share	$	12.63	$	9.74	$	6.07

Diluted:
Weighted-average shares outstanding used in basic calculation		39.2		39.2		38.3
Add dilutive potential shares		1.0		1.1		0.9

Weighted-average shares used in computing diluted net income per share		40.2		40.3		39.2

Diluted net income per share	$	12.32	$	9.47	$	5.93

Selected Quarterly Data (Tables)

12 Months Ended

Dec. 31, 2011

Selected Quarterly Data [Abstract]

Schedule Of Selected Quarterly Data


	2011
	Q1		Q2		Q3		Q4
Revenue	$	388.1	$	425.7	$	446.7	$	496.8
Gross profit	$	278.8	$	306.6	$	325.5	$	362.9
Net income	$	104.1	$	117.4	$	122.4	$	151.2
Net income per common share
Basic	$	2.66	$	2.99	$	3.13	$	3.86
Diluted	$	2.59	$	2.91	$	3.05	$	3.75

	2010
	Q1		Q2		Q3		Q4
Revenue	$	328.6	$	350.7	$	344.4	$	389.3
Gross profit	$	240.5	$	256.8	$	250.6	$	282.1
Net income	$	85.3	$	88.7	$	86.6	$	121.2
Net income per common share
Basic	$	2.20	$	2.26	$	2.20	$	3.10
Diluted	$	2.12	$	2.19	$	2.14	$	3.02

Summary Of Significant Accounting Policies (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2009 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Highly liquid investments, maximum number of days qualifying cash equivalents	90
Number of customers representing more than 10% accounts receivable	0	0
Number of customers representing more than 10% of total revenue	0	0	0
Depreciation expense	$ 28.7	$ 23.7	$ 19.0
Capitalized computer software, gross	$ 5.2	$ 8.5
Intangible assets useful life minimum, in years	1
Intangible assets useful life maximum, in years	9
Impairment of goodwill	$ 0.0
Market-based implied volatility percentage	100.00%
Percentage of likelihood of realization of tax benefits to recognize tax benefits from uncertain tax positions	50.00%
United States [Member]
Summary Of Significant Accounting Policies [Line Items]
Long-lived assets maintained, percent	98.00%	98.00%
Accounts Receivable [Member] \| United States [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage	77.00%	76.00%
Total Revenue [Member] \| United States [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage	78.00%	80.00%	79.00%
Total Revenue [Member] \| International [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage	22.00%	20.00%	21.00%

Summary Of Significant Accounting Policies (Property, Plant And Equipment, Estimated Useful Lives) (Details)	12 Months Ended
	Dec. 31, 2011
Building [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, maximum estimated useful lives, years	30
Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, maximum estimated useful lives, years	15
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful lives	Lesser of useful life or term of lease
Equipment And Furniture [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, maximum estimated useful lives, years	5
Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, maximum estimated useful lives, years	3
Enterprise-Wide Software [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, maximum estimated useful lives, years	5
Purchased Software [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful lives	Lesser of 3 years or life of license

Financial Instruments (Narrative) (Details) € in Millions, £ in Millions, SFr in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2011 CHF (SFr)	Dec. 31, 2011 GBP (£)	Dec. 31, 2011 EUR (€)	Dec. 31, 2011 USD ($)	Dec. 31, 2010 GBP (£)	Dec. 31, 2010 EUR (€)	Dec. 31, 2010 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Accumulated net unrealized gains (losses) on investments, net of tax						$ 1.1			$ 1.3
Realized gains recognized on the sale of investments	$ 2.5
Derivative asset						$ 3.5
Derivative liabilities									$ 2.1
Outstanding currency forward contracts \| €								€ 21.0
Notional amount of currency forward contracts to hedge non-functional currency denominated net monetary assets and liabilities			SFr (1.7)	£ 1.8	€ 35.0		£ 2.2	€ 26.0
Foreign currency transaction gains (losses) before tax	0.3	$ (2.6)
Foreign Exchange Forward [Member] \| Other Income [Member] \| Not Designated As Hedging Instrument [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gains (losses) recognized as interest and other income, net, related to derivative instruments used to hedge against balance sheet foreign currency exposures	$ (1.2)	$ 3.1

Financial Instruments (Summary Of Company's Cash, Cash Equivalents Or Short-Term Or Long-Term Investments) (Details) - USD ($) $ in Millions	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008
Schedule Of Available-For-Sale Securities [Line Items]
Amortized Cost	$ 2,170.7	$ 1,610.0
Gross Unrealized Gains	6.4	4.6
Gross Unrealized Losses	(5.3)	(5.7)
Fair Value	2,171.8	1,608.9
Cash and Cash Equivalents	465.8	279.8	$ 221.4	$ 194.6
Short-term Investments	563.4	630.6
Long-term Investments	1,142.6	698.5
Cash [Member]
Schedule Of Available-For-Sale Securities [Line Items]
Amortized Cost	51.6	20.1
Fair Value	51.6	20.1
Cash and Cash Equivalents	51.6	20.1
Level 1 [Member]
Schedule Of Available-For-Sale Securities [Line Items]
Amortized Cost	587.1	327.4
Gross Unrealized Gains	0.5	0.1
Fair Value	587.6	327.5
Cash and Cash Equivalents	403.2	211.2
Short-term Investments	130.5	76.3
Long-term Investments	53.9	40.0
Level 1 [Member] \| Money Market Funds [Member]
Schedule Of Available-For-Sale Securities [Line Items]
Amortized Cost	403.2	211.2
Fair Value	403.2	211.2
Cash and Cash Equivalents	403.2	211.2
Level 1 [Member] \| US Treasuries & Corporate Equity Securities [Member]
Schedule Of Available-For-Sale Securities [Line Items]
Amortized Cost	183.9
Gross Unrealized Gains	0.5
Fair Value	184.4
Short-term Investments	130.5
Long-term Investments	53.9
Level 1 [Member] \| US Treasuries [Member]
Schedule Of Available-For-Sale Securities [Line Items]
Amortized Cost		116.2
Gross Unrealized Gains		0.1
Fair Value		116.3
Short-term Investments		76.3
Long-term Investments		40.0
Level 2 [Member]
Schedule Of Available-For-Sale Securities [Line Items]
Amortized Cost	1,512.0	1,239.9
Gross Unrealized Gains	5.9	4.5
Gross Unrealized Losses	(1.7)	(1.7)
Fair Value	1,516.2	1,242.7
Cash and Cash Equivalents	11.0	48.5
Short-term Investments	432.9	554.3
Long-term Investments	1,072.3	639.9
Level 2 [Member] \| Commercial Paper [Member]
Schedule Of Available-For-Sale Securities [Line Items]
Amortized Cost	63.5	122.5
Fair Value	63.5	122.5
Cash and Cash Equivalents	11.0	43.5
Short-term Investments	52.5	79.0
Level 2 [Member] \| Corporate Securities [Member]
Schedule Of Available-For-Sale Securities [Line Items]
Amortized Cost	586.6	474.6
Gross Unrealized Gains	3.0	3.1
Gross Unrealized Losses	(1.4)	(0.9)
Fair Value	588.2	476.8
Short-term Investments	162.4	175.4
Long-term Investments	425.8	301.4
Level 2 [Member] \| US Government Agencies [Member]
Schedule Of Available-For-Sale Securities [Line Items]
Amortized Cost	521.1	389.0
Gross Unrealized Gains	1.4	0.6
Gross Unrealized Losses	(0.1)	(0.4)
Fair Value	522.4	389.2
Cash and Cash Equivalents		5.0
Short-term Investments	126.6	187.7
Long-term Investments	395.8	196.5
Level 2 [Member] \| Non-US Government Securities [Member]
Schedule Of Available-For-Sale Securities [Line Items]
Amortized Cost	68.7	21.1
Gross Unrealized Gains	0.4	0.1
Gross Unrealized Losses	(0.1)	(0.1)
Fair Value	69.0	21.1
Short-term Investments	1.3
Long-term Investments	67.7	21.1
Level 2 [Member] \| Municipal Securities [Member]
Schedule Of Available-For-Sale Securities [Line Items]
Amortized Cost	272.1	232.7
Gross Unrealized Gains	1.1	0.7
Gross Unrealized Losses	(0.1)	(0.3)
Fair Value	273.1	233.1
Short-term Investments	90.1	112.2
Long-term Investments	183.0	120.9
Level 3 [Member]
Schedule Of Available-For-Sale Securities [Line Items]
Amortized Cost	20.0	22.6
Gross Unrealized Losses	(3.6)	(4.0)
Fair Value	16.4	18.6
Long-term Investments	16.4	18.6
Level 3 [Member] \| Municipal Securities [Member]
Schedule Of Available-For-Sale Securities [Line Items]
Amortized Cost	20.0	22.6
Gross Unrealized Losses	(3.6)	(4.0)
Fair Value	16.4	18.6
Long-term Investments	$ 16.4	$ 18.6

Financial Instruments (Schedule Of Maturities Of Cash Equivalents And Available-For-Sale Debt Investments) (Details) $ in Millions	Dec. 31, 2011 USD ($)
Periods Of Maturity [Line Items]
Available for sale securities amortized cost excluding equity securities	$ 2,118.5
Available for sale securities fair value excluding equity securities	2,119.2
Mature In Less Than One Year [Member]
Periods Of Maturity [Line Items]
Available for sale securities amortized cost excluding equity securities	976.2
Available for sale securities fair value excluding equity securities	976.7
Mature In One To Five Years [Member]
Periods Of Maturity [Line Items]
Available for sale securities amortized cost excluding equity securities	1,122.3
Available for sale securities fair value excluding equity securities	1,126.1
Mature In More Than Five Years [Member]
Periods Of Maturity [Line Items]
Available for sale securities amortized cost excluding equity securities	20.0
Available for sale securities fair value excluding equity securities	$ 16.4

Financial Instruments (Schedule Of Available-For-Sale Investments With Unrealized Losses) (Details) - USD ($) $ in Millions	Dec. 31, 2011	Dec. 31, 2010
Schedule Of Available-For-Sale Securities [Line Items]
Available-for-sale securities, Unrealized losses less than 12 months, Fair Value	$ 463.4	$ 374.1
Available-for-sale securities, Unrealized losses less than 12 months, Unrealized Losses	(1.7)	(1.7)
Available-for-sale securities, Unrealized losses 12 months or greater, Fair Value	16.4	18.6
Available-for-sale securities, Unrealized losses 12 months or greater, Unrealized Losses	(3.6)	(4.0)
Available-for-sale securities, Unrealized losses, Total Fair Value	479.8	392.7
Available-for-sale securities, Unrealized losses, Total Unrealized Losses	(5.3)	(5.7)
Corporate Securities [Member]
Schedule Of Available-For-Sale Securities [Line Items]
Available-for-sale securities, Unrealized losses less than 12 months, Fair Value	212.1	135.7
Available-for-sale securities, Unrealized losses less than 12 months, Unrealized Losses	(1.4)	(0.9)
Available-for-sale securities, Unrealized losses, Total Fair Value	212.1	135.7
Available-for-sale securities, Unrealized losses, Total Unrealized Losses	(1.4)	(0.9)
Municipal Securities [Member]
Schedule Of Available-For-Sale Securities [Line Items]
Available-for-sale securities, Unrealized losses less than 12 months, Fair Value	48.0	57.5
Available-for-sale securities, Unrealized losses less than 12 months, Unrealized Losses	(0.1)	(0.3)
Available-for-sale securities, Unrealized losses, Total Fair Value	48.0	57.5
Available-for-sale securities, Unrealized losses, Total Unrealized Losses	(0.1)	(0.3)
Non-US Government Securities [Member]
Schedule Of Available-For-Sale Securities [Line Items]
Available-for-sale securities, Unrealized losses less than 12 months, Fair Value	34.5
Available-for-sale securities, Unrealized losses less than 12 months, Unrealized Losses	(0.1)
Available-for-sale securities, Unrealized losses, Total Fair Value	34.5
Available-for-sale securities, Unrealized losses, Total Unrealized Losses	(0.1)
US Government Agencies [Member]
Schedule Of Available-For-Sale Securities [Line Items]
Available-for-sale securities, Unrealized losses less than 12 months, Fair Value	168.8	180.9
Available-for-sale securities, Unrealized losses less than 12 months, Unrealized Losses	(0.1)	(0.5)
Available-for-sale securities, Unrealized losses, Total Fair Value	168.8	180.9
Available-for-sale securities, Unrealized losses, Total Unrealized Losses	(0.1)	(0.5)
Auction Rate Securities [Member]
Schedule Of Available-For-Sale Securities [Line Items]
Available-for-sale securities, Unrealized losses 12 months or greater, Fair Value	16.4	18.6
Available-for-sale securities, Unrealized losses 12 months or greater, Unrealized Losses	(3.6)	(4.0)
Available-for-sale securities, Unrealized losses, Total Fair Value	16.4	18.6
Available-for-sale securities, Unrealized losses, Total Unrealized Losses	$ (3.6)	$ (4.0)

Financial Instruments (Schedule Of Reconciliation For All Assets Measured At Fair Value Using Significant Unobservable Inputs (Level 3)) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2011 USD ($)
Financial Instruments [Abstract]
Balance at January 1, 2011	$ 18.6
Sales	(2.6)
Total gains or (losses): Included in other comprehensive income (loss)	0.4
Balance at December 31, 2011	$ 16.4

Balance Sheet Details (Details Of Selected Balance Sheet Items) (Details) - USD ($) $ in Millions	Dec. 31, 2011	Dec. 31, 2010
Balance Sheet Details [Abstract]
Raw materials	$ 34.8	$ 25.6
Work-in-process	2.5	2.5
Finished goods	74.8	58.7
Total	112.1	86.8
Land	72.1	41.8
Building and building/leasehold improvements	88.1	62.4
Machinery and equipment	68.0	57.4
Computer and office equipment	15.7	12.3
Capitalized software	50.5	38.9
Construction-in-process	11.4	34.0
Property, plant and equipment, gross	305.8	246.8
Less accumulated depreciation	(108.6)	(87.0)
Total property, plant and equipment, net	197.2	159.8
Taxes payable	8.5	19.7
Other	29.0	29.0
Total other accrued liabilities-short-term	37.5	48.7
Income taxes-long term	95.9	78.4
Other long-term liabilities	1.0	0.8
Total other liabilities	$ 96.9	$ 79.2

Goodwill And Intangible Assets (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2011 USD ($) years	Dec. 31, 2010 USD ($) years	Dec. 31, 2009 USD ($)
Goodwill And Intangible Assets [Abstract]
Goodwill	$ 116.9	$ 116.9
Gross carrying amount of intangible assets, intellectual property	136.1	119.3
Acquired intellectual property	$ 16.8	$ 27.6
Weighted average useful life, years \| years	6	6
Amortization expense related to intangible assets	$ 17.8	$ 16.7	$ 15.6
Accumulated amortization of intangible assets	$ 71.0	$ 53.2

- Definition

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph e
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 43
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 68
-Subparagraph l
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6905597&loc=d3e13816-109267

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 72
-Subparagraph d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph e
-Clause 1
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 34
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Goodwill And Intangible Assets (Schedule Of Estimated Future Amortization Expense Of Intangible Assets) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2011 USD ($)
Goodwill And Intangible Assets [Abstract]
2012	$ 19.0
2013	14.5
2014	10.9
2015	10.7
2016	7.7
2017 and thereafter	2.3
Total	$ 65.1

Commitments And Contingencies (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2011 USD ($)
Commitments And Contingencies [Abstract]
Operating lease maximum term (in years)	3
Other commitments	$ 225.5

Commitments And Contingencies (Schedule Of Future Minimum Lease Commitments Under Operating Leases) (Details) $ in Millions	Dec. 31, 2011 USD ($)
Commitments And Contingencies [Abstract]
2012	$ 2.7
2013	2.1
2014	1.4
2015	0.5
2016 and beyond	0.6
Total	$ 7.3

Stockholders' Equity (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended			12 Months Ended
	Oct. 31, 2011	Jul. 31, 2010	Mar. 31, 2009	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Feb. 28, 2011
Stockholders' Equity [Abstract]
Stock repurchase program, authorized amount	$ 500.0	$ 150.0	$ 300.0
Company's common stock repurchased through collared accelerated share repurchase program			$ 150.0
Remaining authorized amount of stock repurchases				$ 568.2			$ 400.0
Aggregate reduction in common stock during stock repurchases				19.7	$ 24.0	$ 31.3
Amount charged to retained earnings during stock repurchases				$ 312.1	$ 174.6	$ 118.7

Stockholders' Equity (Schedule Of Stock Repurchase Activities) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Stockholders' Equity [Abstract]
Shares repurchased	1.0	0.7	1.4
Average price per share	$ 344.72	$ 267.81	$ 106.68
Value of shares repurchased	$ 331.8	$ 198.6	$ 150.0

Stockholders' Equity (Components Of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions	Dec. 31, 2011	Dec. 31, 2010
Stockholders' Equity [Abstract]
Foreign currency translation gains (losses)	$ (0.2)	$ 0.1
Accumulated net unrealized gains on derivatives, net of tax		0.2
Accumulated net unrealized gains on available-for-sale securities, net of tax	1.1	1.3
Total accumulated other comprehensive income	$ 0.9	$ 1.6

- Definition

Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.

+ References

+ Details

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

+ References

+ Details

Stockholders' Equity (Components Of Comprehensive Income, Net Of Tax) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Stockholders' Equity [Abstract]
Net income	$ 151.2	$ 122.4	$ 117.4	$ 104.1	$ 121.2	$ 86.6	$ 88.7	$ 85.3	$ 495.1	$ 381.8	$ 232.6
Foreign currency translation gains (losses)									(0.3)	(0.3)	0.2
Unrealized gains (losses) on derivative instruments									0.5	0.2	(1.1)
Reclassification adjustment for (gains) losses on derivative instruments recognized during the period									(0.7)		1.1
Unrealized gains (losses) arising during period									(0.2)	0.4	4.0
Total other comprehensive income									$ 494.4	$ 382.1	$ 236.8

- Definition

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the economic entity, including both controlling (parent) and noncontrolling interests. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, including any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

+ References + Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 87-21
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 10, 15
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 28, 29, 30
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 5
-Section 03
-Paragraph 19

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 20
-Article 9

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Net Income
-URI http://asc.fasb.org/extlink&oid=6518256

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Other Comprehensive Income
-URI http://asc.fasb.org/extlink&oid=6519514

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.18)
-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.19)
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6920043&loc=d3e565-108580

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.22)
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph A7
-Appendix A

+ Details

- Definition

Change in the balance sheet adjustment that results from the process of translating subsidiary financial statements and foreign equity investments into functional currency of the reporting entity for the period being reported, net of tax. If an entity's functional currency is a foreign currency, translation adjustments result from the process of translating that entity's financial statements into the reporting currency. Includes gain (loss) on foreign currency forward exchange contracts. Includes foreign currency transactions designated as hedges of net investment in a foreign entity and intercompany foreign currency transactions that are of a long-term nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements. Includes the gain (loss) on a derivative instrument or nonderivative financial instrument that may give rise to a foreign currency transaction gain (loss) and that have been designated and have qualified as hedging instruments for hedges of the foreign currency exposure of a net investment in a foreign operation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 45
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 52
-Paragraph 13, 20, 31
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 17
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=6920043&loc=d3e637-108580

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=6915805&loc=d3e32022-110900

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=6920043&loc=d3e653-108580

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 45
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=6915805&loc=d3e32157-110900

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 45
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=6915805&loc=d3e32211-110900

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 55
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6920433&loc=d3e998-108581

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph c(3)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

Net of tax effect of the reclassification adjustment for accumulated gains and losses from derivative instrument designated and qualifying as the effective portion of cash flow hedges included in accumulated comprehensive income that was realized in net income during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 24
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 31, 46
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 18, 19
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=6920043&loc=d3e637-108580

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624171-113959

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Reclassification Adjustments
-URI http://asc.fasb.org/extlink&oid=6522872

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=6920043&loc=d3e689-108580

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph c(3)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

Change in accumulated gains and losses from derivative instrument designated and qualifying as the effective portion of cash flow hedges, net of tax effect. The after tax effect change includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 46
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 24
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 17, 20
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 121
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=6920043&loc=d3e637-108580

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=6920043&loc=d3e653-108580

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6441202&loc=d3e80720-113993

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624171-113959

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 55
-Paragraph 2
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=6920433&loc=d3e998-108581

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph c(3)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

Appreciation or loss in value (before reclassification adjustment) of the total of unsold securities during the period being reported on, net of tax. Reclassification adjustments include: (1) the unrealized holding gain (loss), net of tax, at the date of the transfer for a debt security from the held-to-maturity category transferred into the available-for-sale category. Also includes the unrealized gain (loss) at the date of transfer for a debt security from the available-for-sale category transferred into the held-to-maturity category; (2) the unrealized gains (losses) realized upon the sale of securities, after tax; and (3) the unrealized gains (losses) realized upon the write-down of securities, after tax.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 13
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 24
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 17, 22
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=6920043&loc=d3e637-108580

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=6920043&loc=d3e653-108580

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 55
-Paragraph 2
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=6920433&loc=d3e998-108581

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph c(3)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Stock-Based Compensation (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Oct. 31, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate intrinsic value of options exercised under stock option plans	$ 262.8	$ 192.9	$ 94.9
Cash received from option exercises and employee stock purchase plans	$ 260.6	141.1	58.7
Weighted average remaining contractual life of shares vested and expected to vest, years	7.31
Aggregate intrinsic value of shares vested and expected to vest	$ 957.5
Excess tax benefit from stock-based compensation	58.8	65.2	25.1
Stock-based compensation charges, income tax effect	42.9	$ 39.2	$ 26.5
Stock Options Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation expense	$ 229.0
Weighted average period unrecognized compensation expenses are expected to be recognized, years	2.5
Employee Stock Purchase Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Minimum hours employed per week	20
Minimum months employed per year	5
Maximum percentage of employees on stockholders to participate in ESPP	5.00%
Shares were reserved for future issuance	600,000
Discount on fair market value on the purchase date	85.00%
Discount on fair market value on the offering date	85.00%
Employee stock purchase plan, shares issued	100,000	100,000	100,000
Employee stock purchase plan, value of shares issued	$ 18.5	$ 14.3	$ 8.0
Percentage of employee payroll deduction under the stock plan, maximum	15.00%
Total unrecognized compensation expense	$ 9.4
Weighted average period unrecognized compensation expenses are expected to be recognized, years	1.2
2010 Incentive Award Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, options, expiration term (in years)	10
Shares were reserved for future issuance	1,400,000
General options vesting percentage upon completion of six months of service	12.50%
2009 Employment Commencement Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, options, expiration term (in years)	10
Shares were reserved for future issuance	47,000
2000 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, options, expiration term (in years)	10
Minimum exercise price of NSOs, percentage of fair value	85.00%
General options vesting percentage upon completion of six months of service	12.50%
2000 Non-Employee Directors' Stock Option Plan [member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, options, expiration term (in years)	10
Stock options granted initial vesting period, years	3
Shares were reserved for future issuance	99,000
Percentage shares vesting after one year of grant	33.30%
Reduction under Directors' plan, shares				150,000

Stock-Based Compensation (Summary Of Stock Option Activity Under All Stock Plans) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Stock-Based Compensation [Abstract]
Beginning balance, Shares Available for Grant	1,400,000
Options authorized, Shares Available for Grant	1,400,000
Options granted, Shares Available for Grant	(1,300,000)
Options forfeited/expired, Shares Available for Grant	100,000
Ending balance, Shares Available for Grant	1,600,000
Beginning balance, Number of Options Outstanding	4,800,000
Options granted, Number Outstanding	1,300,000
Options exercised, Number Outstanding	(1,300,000)
Options forfeited/expired, Number Outstanding	(100,000)
Ending balance, Number of Options Outstanding	4,700,000
Beginning balance, Number of Options Outstanding, Weighted Average Exercise Price Per Share	$ 209.03
Options granted, Weighted Average Exercise Price Per Share	345.96
Options exercised, Weighted Average Exercise Price Per Share	182.28
Options forfeited/expired, Weighted Average Exercise Price Per Share	282.54
Ending balance, Number of Options Outstanding, Weighted Average Exercise Price Per Share	$ 254.19
Options exercisable, number of shares	2.4	2.5
Options exercisable, weighted-average exercise price per share	$ 212.43	$ 173.49
Options vested and expected to vest, shares of options	4.5	4.7
Options vested and expected to vest, weighted-average exercise price	$ 252.57	$ 207.79

Stock-Based Compensation (Summary Of Significant Ranges Of Outstanding And Exercisable Options) (Details)
$ / shares in Units, $ in Thousands

12 Months Ended

Dec. 31, 2011

USD ($)

$ / shares

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Options Outstanding, Number of Shares | shares

4.7

Options Outstanding, Weighted Average Remaining Contractual Life

7.34

Options Outstanding, Weighted Average Exercise Price Per Share

$ 254.19

Options Outstanding, Aggregate Intrinsic Value | $

$ 973,000

^[1]

Options Exercisable, Number of Shares | shares

2.4

Options Exercisable, Weighted Average Remaining Contractual Life

6.30

Options Exercisable, Weighted Average Exercise Price Per Share

$ 212.43

Options Exercisable, Aggregate Intrinsic Value | $

$ 602,100

^[1]

Closing stock price | $

$ 463,010

Exercise Price $0.0 - 107.27 [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Options Outstanding, Number of Shares | shares

1.1

Options Outstanding, Weighted Average Remaining Contractual Life

5.82

Options Outstanding, Weighted Average Exercise Price Per Share

$ 94.30

Options Exercisable, Number of Shares | shares

0.8

Options Exercisable, Weighted Average Exercise Price Per Share

$ 88.94

Range of Exercise Prices, minimum

0.00

Range of Exercise Prices, maximum

$ 107.27

Exercise Price $107.65 - 303.27 [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Options Outstanding, Number of Shares | shares

1.3

Options Outstanding, Weighted Average Remaining Contractual Life

6.27

Options Outstanding, Weighted Average Exercise Price Per Share

$ 236.08

Options Exercisable, Number of Shares | shares

1.0

Options Exercisable, Weighted Average Exercise Price Per Share

$ 232.44

Range of Exercise Prices, minimum

107.65

Range of Exercise Prices, maximum

$ 303.27

Exercise Price $308.96 - 334.30 [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Options Outstanding, Number of Shares | shares

1.0

Options Outstanding, Weighted Average Remaining Contractual Life

8.11

Options Outstanding, Weighted Average Exercise Price Per Share

$ 331.22

Options Exercisable, Number of Shares | shares

0.4

Options Exercisable, Weighted Average Exercise Price Per Share

$ 330.44

Range of Exercise Prices, minimum

308.96

Range of Exercise Prices, maximum

$ 334.30

Exercise Price $341.19 - 439.88 [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Options Outstanding, Number of Shares | shares

1.3

Options Outstanding, Weighted Average Remaining Contractual Life

9.11

Options Outstanding, Weighted Average Exercise Price Per Share

$ 349.46

Options Exercisable, Number of Shares | shares

0.2

Options Exercisable, Weighted Average Exercise Price Per Share

$ 345.04

Range of Exercise Prices, minimum

341.19

Range of Exercise Prices, maximum

$ 439.88

[1]	The aggregate intrinsic value represents the total pre-tax intrinsic value, based on the Company's closing stock price of $463.01 as of December 31, 2011, which would have been received by the option holders had all in-the-money option holders exercised their options as of that date.

Stock-Based Compensation (Summary Of Stock-Based Compensation Charges) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Cost Of Sales - Products [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation charge	$ 12.3	$ 9.6	$ 7.7
Cost Of Sales - Services [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation charge	11.0	8.4	6.6
Total Cost Of Sales [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation charge	23.3	18.0	14.3
Selling, General And Administrative [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation charge	84.3	77.0	61.3
Research And Development [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation charge	28.8	22.6	21.4
Stock-Based Compensation Expense Before Income Taxes [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation charge	136.4	117.6	97.0
Income Tax Effect [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation charge	42.9	39.2	26.5
Stock-Based Compensation Expense After Income Taxes [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation charge	$ 93.5	$ 78.4	$ 70.5

Stock-Based Compensation (Schedule Of Estimated Fair Value Of The Option Using Black-Scholes Option Pricing Model, Weighted Average Assumptions) (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2011 USD ($) $ / shares	Dec. 31, 2010 USD ($) $ / shares	Dec. 31, 2009 USD ($) $ / shares
Stock Option Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average risk free interest rate	2.16%	2.24%	1.76%
Average expected term (years)	4.75	4.80	5.28
Average volatility	35.00%	36.00%	55.00%
Weighted average fair value at grant date \| $ / shares	$ 116.03	$ 111.84	$ 59.53
Total stock-based compensation expense \| $	$ 128.3	$ 109.1	$ 90.3
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average risk free interest rate	0.32%	0.43%	0.63%
Average expected term (years)	1.30	1.30	1.30
Average volatility	33.00%	39.00%	56.00%
Weighted average fair value at grant date \| $ / shares	$ 99.94	$ 106.72	$ 51.23
Total stock-based compensation expense \| $	$ 8.1	$ 8.5	$ 6.7

- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References + Details

Income Taxes (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
Income Taxes (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008
Income Taxes [Abstract]
Federal statutory tax rate	35.00%	35.00%	35.00%
Valuation allowance	$ 2.8
Cumulative amount of earnings upon which U.S. income taxes have not been provided	220.5
Total gross unrecognized tax benefits	98.1	$ 78.9	$ 70.0	$ 42.0
Unrecognized tax benefits, period increase	19.2
Unrecognized tax benefits that would reduce company's effective tax rate	93.8	74.7	65.7
Gross interest related to unrecognized tax benefits accrued	7.9	$ 5.5	$ 3.3
Unrecognized tax benefits, increase in interest	$ 2.4

Income Taxes (Schedule Of Income Before Provision For Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Abstract]
Income before provision for income taxes, U.S.	$ 540.3	$ 438.7	$ 334.5
Income before provision for income taxes, Foreign	169.4	133.6	61.6
Income before income taxes	$ 709.7	$ 572.3	$ 396.1

Income Taxes (Schedule Of Provision For Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Abstract]
Current income taxes, Federal	$ 195.7	$ 189.9	$ 159.0
Current income taxes, State	8.1	20.0	19.1
Current income taxes, Foreign	3.7	2.1	1.0
Current income taxes	207.5	212.0	179.1
Deferred income taxes, Federal	6.8	(22.2)	(16.0)
Deferred income taxes, State	0.4	0.5	0.3
Deferred income taxes, Foreign	(0.1)	0.2	0.1
Deferred income taxes	7.1	(21.5)	(15.6)
Total income tax expense	$ 214.6	$ 190.5	$ 163.5

Income Taxes (Schedule Of Income Tax Difference From the Statutory Rate) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Abstract]
Federal tax at statutory rate	$ 248.3	$ 200.3	$ 138.6
State taxes, net of federal benefits	8.5	20.5	19.4
Foreign rate differential	(47.7)	(31.3)
Research and development credit	(6.6)	(4.6)	(2.6)
Stock compensation not benefitted	5.1	4.8	3.9
Other	7.0	0.8	4.2
Total income tax expense	$ 214.6	$ 190.5	$ 163.5

Income Taxes (Schedule Of Deferred Tax Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2011	Dec. 31, 2010
Income Taxes [Abstract]
Deferred tax assets, Stock-based compensation expense	$ 69.2	$ 65.0
Deferred tax assets, Expenses deducted in later years for tax purposes	19.6	21.1
Deferred tax assets, Research and other credits	2.1
Deferred tax assets, Other	0.5	0.2
Gross deferred tax assets	91.4	86.3
Valuation allowance	(2.8)
Deferred tax assets, Net	88.6	86.3
Deferred tax liabilities, Fixed assets	(11.8)
Deferred tax liabilities, Other	(1.5)	(4.5)
Deferred tax liabilities	(13.3)	(4.5)
Net deferred tax assets	$ 75.3	$ 81.8

Income Taxes (Schedule Of Gross Unrecognized Income Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Abstract]
Beginning balance	$ 78.9	$ 70.0	$ 42.0
Additions for tax positions related to current year	18.1	9.1	24.9
Increase (decrease) for tax positions related to prior year	1.1	(0.2)	3.1
Ending balance	$ 98.1	$ 78.9	$ 70.0

Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Net Income Per Share [Abstract]
Net income	$ 151.2	$ 122.4	$ 117.4	$ 104.1	$ 121.2	$ 86.6	$ 88.7	$ 85.3	$ 495.1	$ 381.8	$ 232.6
Weighted-average shares outstanding									39.2	39.2	38.3
Basic net income per share	$ 3.86	$ 3.13	$ 2.99	$ 2.66	$ 3.10	$ 2.20	$ 2.26	$ 2.20	$ 12.63	$ 9.74	$ 6.07
Weighted-average shares outstanding used in basic calculation									39.2	39.2	38.3
Add dilutive potential shares									1.0	1.1	0.9
Weighted-average shares used in computing diluted net income per share									40.2	40.3	39.2
Diluted net income per share	$ 3.75	$ 3.05	$ 2.91	$ 2.59	$ 3.02	$ 2.14	$ 2.19	$ 2.12	$ 12.32	$ 9.47	$ 5.93
Employee stock options excluded from computation of diluted net income per share because the effect of including such shares would have been antidilutive									2.1	1.3	1.5

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 13, 14
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 171
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 40
-Subparagraph c
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Diluted Earnings Per Share
-URI http://asc.fasb.org/extlink&oid=6510752

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Contingent Stock Agreement
-URI http://asc.fasb.org/extlink&oid=6508534

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Antidilution
-URI http://asc.fasb.org/extlink&oid=6505113

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 07-4
-Paragraph 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 36, 37, 38
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 5
-Section 03
-Paragraph 20

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 7
-Paragraph 18

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 21
-Article 9

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.21)
-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6920599&loc=d3e1252-109256

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 55
-Paragraph 52
-URI http://asc.fasb.org/extlink&oid=6945512&loc=d3e4984-109258

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.23)
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.19)
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 07-4
-Paragraph 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References + Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

+ Details

- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References + Details

- Definition

Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 171
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 40
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 8
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=6920599&loc=d3e1448-109256

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Weighted-Average Number of Common Shares Outstanding
-URI http://asc.fasb.org/extlink&oid=6528421

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 07-4
-Paragraph 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Employee Benefit Plans (Details) - USD ($) $ in Millions	12 Months Ended
Employee Benefit Plans (Details) - USD ($) $ in Millions	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Employee Benefit Plans [Abstract]
Maximum rate of employees' contribution to 401(k) plan	75.00%
Employer matching contributions	$ 0.0	$ 0.0	$ 0.0

Selected Quarterly Data (Schedule Of Selected Quarterly Data) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Selected Quarterly Data [Abstract]
Revenue	$ 496.8	$ 446.7	$ 425.7	$ 388.1	$ 389.3	$ 344.4	$ 350.7	$ 328.6	$ 1,757.3	$ 1,413.0	$ 1,052.2
Gross profit	362.9	325.5	306.6	278.8	282.1	250.6	256.8	240.5	1,273.8	1,030.0	751.1
Net income	$ 151.2	$ 122.4	$ 117.4	$ 104.1	$ 121.2	$ 86.6	$ 88.7	$ 85.3	$ 495.1	$ 381.8	$ 232.6
Basic net income per share	$ 3.86	$ 3.13	$ 2.99	$ 2.66	$ 3.10	$ 2.20	$ 2.26	$ 2.20	$ 12.63	$ 9.74	$ 6.07
Diluted net income per share	$ 3.75	$ 3.05	$ 2.91	$ 2.59	$ 3.02	$ 2.14	$ 2.19	$ 2.12	$ 12.32	$ 9.47	$ 5.93