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Document and Entity Information - shares	6 Months Ended
Document and Entity Information - shares	Jun. 30, 2012	Jul. 16, 2012
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q2
Trading Symbol	ISRG
Entity Registrant Name	INTUITIVE SURGICAL INC
Entity Central Index Key	0001035267
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		39,934,128

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2012	Dec. 31, 2011
Current assets:
Cash and Cash Equivalents	$ 484.4	$ 465.8
Short-term investments	728.1	563.4
Accounts receivable, net	323.2	297.9
Inventory	119.4	112.1
Prepaids and other current assets	40.8	20.9
Deferred tax assets	7.4	6.2
Total current assets	1,703.3	1,466.3
Property, plant and equipment, net	216.1	197.2
Long-term investments	1,418.7	1,142.6
Long-term deferred tax assets	74.6	69.1
Intangible and other assets, net	75.3	71.0
Goodwill	138.1	116.9
Total assets	3,626.1	3,063.1
Current liabilities:
Accounts payable	54.6	45.8
Accrued compensation and employee benefits	74.5	83.1
Deferred revenue	168.2	154.2
Other accrued liabilities	49.5	37.5
Total current liabilities	346.8	320.6
Other long-term liabilities	96.9	96.9
Total liabilities	443.7	417.5
Commitments and contingencies (Note 5)
Stockholders' equity:
Preferred stock, 2.5 shares authorized, $0.001 par value, issuable in series; no shares issued and outstanding as of June 30, 2012 and December 31, 2011
Common stock, 100.0 shares authorized, $0.001 par value, 39.9 and 39.3 shares issued and outstanding as of June 30, 2012 and December 31, 2011, respectively
Additional paid-in capital	1,993.0	1,742.8
Retained earnings	1,185.8	901.9
Accumulated other comprehensive income	3.6	0.9
Total stockholders' equity	3,182.4	2,645.6
Total liabilities and stockholders' equity	$ 3,626.1	$ 3,063.1

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares shares in Millions	Jun. 30, 2012	Dec. 31, 2011
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	39.9	39.3
Common stock, shares outstanding	39.9	39.3

Condensed Consolidated Statements Of Comprehensive Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Revenue:
Product	$ 453.1	$ 358.1	$ 867.5	$ 682.6
Service	83.4	67.6	164.2	131.2
Total revenue	536.5	425.7	1,031.7	813.8
Cost of revenue:
Product	122.9	93.5	234.6	178.3
Service	27.2	25.6	54.8	50.1
Total cost of revenue	150.1	119.1	289.4	228.4
Gross profit	386.4	306.6	742.3	585.4
Operating expenses:
Selling, general, and administrative	120.9	106.5	245.1	205.6
Research and development	40.2	32.0	78.6	63.4
Total operating expenses	161.1	138.5	323.7	269.0
Income from operations	225.3	168.1	418.6	316.4
Interest and other income (expense), net	4.0	4.1	7.8	9.4
Income before taxes	229.3	172.2	426.4	325.8
Income tax expense	74.4	54.8	128.0	104.3
Net income	$ 154.9	$ 117.4	$ 298.4	$ 221.5
Net income per share:
Basic	$ 3.88	$ 2.99	$ 7.52	$ 5.65
Diluted	$ 3.75	$ 2.91	$ 7.26	$ 5.51
Shares used in computing basic and diluted net income per share:
Basic	39.9	39.2	39.7	39.2
Diluted	41.3	40.3	41.1	40.2
Total comprehensive income	$ 157.0	$ 120.7	$ 301.1	$ 222.5

Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Operating Activities:
Net income	$ 298.4	$ 221.5
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	15.2	13.8
Amortization of intangible assets	12.0	8.7
Accretion of discounts and amortization of premiums on investments, net	15.2	10.0
Deferred income taxes	(6.1)	0.8
Income tax benefits from employee stock option plans	44.7	21.1
Excess tax benefit from stock-based compensation	(44.7)	(24.4)
Stock-based compensation expense	67.7	66.9
Changes in operating assets and liabilities, net of effects of acquisitions:
Accounts receivable	(21.9)	(3.5)
Inventory	(5.0)	(13.3)
Prepaids and other assets	(4.4)	(3.1)
Accounts payable	5.4	1.8
Accrued compensation and employee benefits	(8.4)	(9.0)
Deferred revenue	12.9	8.5
Accrued Liabilities	2.0	6.5
Net cash provided by operating activities	383.0	306.3
Investing Activities:
Purchase of investments	(1,022.9)	(725.9)
Proceeds from sales of investments	229.4	216.2
Proceeds from maturities of investments	324.8	393.1
Purchase of property and equipment, intellectual property and business	(63.6)	(53.2)
Net cash used in investing activities	(532.3)	(169.8)
Financing Activities:
Proceeds from issuance of common stock, net	138.5	91.2
Excess tax benefit from stock-based compensation	44.7	24.4
Repurchase and retirement of common stock	(15.2)	(150.7)
Net cash provided by (used in) financing activities	168.0	(35.1)
Effect of exchange rate changes on cash and cash equivalents	(0.1)	0.8
Net increase in cash and cash equivalents	18.6	102.2
Cash and cash equivalents, beginning of period	465.8	279.8
Cash and cash equivalents, end of period	$ 484.4	$ 382.0

Description of Business

6 Months Ended

Jun. 30, 2012

Description of Business

NOTE 1. DESCRIPTION OF BUSINESS

Intuitive designs, manufactures and markets da Vinci Surgical Systems and related instruments and accessories, which taken together, are advanced surgical systems that the Company believes represent a new generation of surgery. The Company believes that this new generation of surgery, which the Company calls da Vinci Surgery, combines the benefits of minimally invasive surgery (MIS) for patients with the ease of use, precision and dexterity of open surgery. A da Vinci Surgical System consists of a surgeon’s console, a patient-side cart and a high performance vision system. The da Vinci Surgical System translates a surgeon’s natural hand movements, which are performed on instrument controls at a console, into corresponding micro-movements of instruments positioned inside the patient through small incisions, or ports. The da Vinci Surgical System is designed to provide its operating surgeon with intuitive control, range of motion, fine tissue manipulation capability and 3-D, High-Definition (HD) vision while simultaneously allowing them to work through the small ports of MIS.

Summary of Significant Accounting Policies

6 Months Ended

Jun. 30, 2012

Summary of Significant Accounting Policies

NOTE 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

In the opinion of management, the accompanying unaudited Condensed Consolidated Financial Statements (“financial statements”) of Intuitive Surgical, Inc. and its wholly-owned subsidiaries have been prepared on a consistent basis with the December 31, 2011 audited Consolidated Financial Statements and include all adjustments, consisting of only normal recurring adjustments, necessary to fairly state the information set forth herein. Certain prior year amounts in the financial statements and notes thereto have been reclassified to conform to the current year’s presentation. The financial statements have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission (“SEC”), and, therefore, omit certain information and footnote disclosure necessary to present the statements in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”). These financial statements should be read in conjunction with the audited Consolidated Financial Statements and Notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2011, which was filed on February 6, 2012. The results of operations for the first six months of fiscal 2012 are not necessarily indicative of the results to be expected for the entire fiscal year or any future periods.

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 collectability 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.

The Company offers its customers the opportunity to trade in their older systems for credit towards the purchase of a newer generation system. The Company generally does not provide specified trade-in rights or upgrade rights at the time of system purchase. Such trade-in or upgrade transactions are separately negotiated based on the circumstances at the time of the trade-in or upgrade and are generally not based on any pre-existing rights granted by the Company. Accordingly, such trade-ins and upgrades are not considered as separate deliverables in the arrangement for a system sale.

As part of a trade-in transaction, the customer receives a new generation system in exchange for its older used system. The trade-in credit is negotiated at the time of the trade-in and is applied towards the purchase price of the new generation unit. Traded-in systems can be reconditioned and resold. The Company accounts for trade-ins consistent with the guidance in AICPA Technical Practice Aid 5100.01, Equipment Sales Net of Trade-Ins (TPA 5100.01). The Company applies the accounting guidance by crediting system revenue for the negotiated price of the new generation system, and the difference between (a) the trade-in allowance and (b) the amount determined by pricing the trade-in system at net realizable value minus a normal profit margin, is treated as a sales allowance. The value of the traded-in system is determined as the amount to which when reconditioning costs are added, will allow a normal profit margin on the sale of the reconditioned unit. When there is no market for the traded-in units, no value is assigned. Traded-in units are reported as a component of inventory until reconditioned and resold, or otherwise disposed.

In addition, customers may also have the opportunity to upgrade their systems, for example, by adding a fourth arm to a three-arm system, adding a second surgeon console for use with the da Vinci Si Surgical System or adding new vision systems to the Standard da Vinci and da Vinci S Surgical Systems. Such upgrades are performed by completing component level upgrades at the customer’s site. Upgrade revenue is recognized when the component level upgrades are complete and the four revenue recognition criteria are met.

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.

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 vendor specific objective evidence (“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 were 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.

New Accounting Standards Recently Adopted

Effective January 1, 2012, the Company adopted revised guidance related to the presentation of comprehensive income that increases comparability between U.S. GAAP and International Financial Reporting Standards. This guidance eliminates the current option to report other comprehensive income (OCI) and its components in the statement of changes in stockholders’ equity. The Company adopted this guidance during the first quarter of 2012 and elected to disclose OCI in a single continuous statement during interim reporting periods.

Financial Instruments

6 Months Ended

Jun. 30, 2012

Financial Instruments

NOTE 3. FINANCIAL INSTRUMENTS

Cash, Cash Equivalents and Investments

The following tables summarize the Company’s cash and available-for-sale securities’ fair value by significant investment category recorded as cash and cash equivalents or short-term or long-term investments as of June 30, 2012 and December 31, 2011 (in millions):


	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Cash and Cash Equivalents		Short- term Investments		Long- term Investments
June 30, 2012
Cash	$	52.7	$	—	$	—		$	52.7	$	52.7	$	—	$	—
Level 1:
Money market funds		405.4		—		—			405.4		405.4		—		—
U.S. Treasuries & corporate equity securities		210.1		0.3		—			210.4		—		159.1		51.3

Subtotal		615.5		0.3		—			615.8		405.4		159.1		51.3

Level 2:
Commercial paper		118.4		—		—			118.4		26.3		92.1		—
Corporate securities		826.8		3.4		(0.7	)		829.5		—		271.8		557.7
U.S. government agencies		585.1		2.1		(0.1	)		587.1		—		136.4		450.7
Non-U.S. government securities		82.6		0.4		—			83.0		—		10.5		72.5
Municipal securities		332.5		1.3		(0.1	)		333.7		—		58.2		275.5

Subtotal		1,945.4		7.2		(0.9	)		1,951.7		26.3		569.0		1,356.4

Level 3:
Municipal securities		13.0		—		(2.0	)		11.0		—		—		11.0

Subtotal		13.0		—		(2.0	)		11.0		—		—		11.0

Total	$	2,626.6	$	7.5	$	(2.9	)	$	2,631.2	$	484.4	$	728.1	$	1,418.7


	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		—		—
U.S. 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
U.S. government agencies		521.1		1.4		(0.1	)		522.4		—		126.6		395.8
Non-U.S. 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

The following table summarizes the contractual maturities of the Company’s cash equivalents and available-for-sale investments excluding corporate equity securities at June 30, 2012 (in millions):


	Amortized Cost		Fair Value
Mature in less than one year	$	1,158.3	$	1,159.1
Mature in one to five years		1,402.0		1,407.6
Mature in more than five years		13.0		11.0

Total	$	2,573.3	$	2,577.7

During the three and six months ended June 30, 2012 and the three months ended June 30, 2011, realized gains or losses recognized on the sale of investments were not significant. Net realized gains recognized on the sale of investments during the six months ended June 30, 2011 were approximately $2.4 million. As of June 30, 2012 and December 31, 2011, net unrealized gains (losses), net of tax of $3.4 million and $1.1 million, respectively, were included in accumulated other comprehensive income in the accompanying unaudited Condensed Consolidated Balance Sheets. At June 30, 2012, the Company evaluated its gross unrealized losses, the majority of which are from auction-rate securities (ARS) and determined these unrealized losses to be 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 issuer; 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.

There have been no transfers between Level 1 and Level 2 measurements since December 31, 2011, and there were no changes in the Company’s valuation technique. Level 3 assets consist of ARS whose underlying assets are student loans which are generally 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 fair 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 June 30, 2012, interest rates, timing and amount of cash flows, credit and liquidity premiums and expected holding periods of the ARS.

Foreign currency derivatives

The Company had $1.2 million and $3.5 million of derivative assets recorded as prepaid and other current assets at June 30, 2012 and December 31, 2011, respectively. The derivative assets 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, the GBP and the Korean Won (KRW).

As of June 30, 2012, the Company had notional amounts of €6.6 million and KRW34.7 million of outstanding currency forward contracts entered into to hedge Euro and KRW denominated sales, compared with none at December 31, 2011. The net gains recorded in accumulated other comprehensive income for the three months ended June 30, 2012 were $1.9 million. The net gains (losses) reclassified to revenue related to the hedged revenue transactions for the three and six months ended June 30, 2012 were not significant. The net gains (losses) reclassified to revenue related to the hedged revenue transactions for the three and six months ended June 30, 2011 were $(1.0) million and $(1.6) million, respectively. Other impacts of derivative instruments designated as cash flow hedges were not significant for the three and six months ended June 30, 2012 and 2011.

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, the GBP, the Swiss Franc (CHF) and the KRW.

As of June 30, 2012, the Company had notional amounts of €21.4 million, £5.0 million, CHF(0.9) million and KRW5.7 billion outstanding currency forward contracts that were entered into to hedge non-functional currency denominated net monetary assets and liabilities, compared with €35.0 million, £1.8 million and CHF(1.7) million at December 31, 2011. For the three months ended June 30, 2012 and 2011, the Company had recognized gains (losses) of approximately $1.1 million and $(1.0) 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 $(1.1) million and $1.0 million of net foreign exchange gains (losses) during the three months ended June 30, 2012 and 2011, respectively, primarily related to the re-measurement of non-functional currency denominated net monetary assets and liabilities. For the six months ended June 30, 2012 and 2011, the Company had recognized gains (losses) of approximately $0.6 million and $(3.2) 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 $(0.6) million and $3.3 million of net foreign exchange gains (losses) during the six months ended June 30, 2012 and 2011, respectively.

Balance Sheet Details

6 Months Ended

Jun. 30, 2012

Balance Sheet Details

NOTE 4. BALANCE SHEET DETAILS

Inventory

The following table provides inventory details (in millions):


	June 30, 2012		December 31, 2011
Inventory
Raw materials	$	34.3	$	34.8
Work-in-process		3.3		2.5
Finished goods		81.8		74.8

Total	$	119.4	$	112.1

Goodwill and intangible and other assets

The increases in goodwill and intangible assets as of June 30, 2012 compared with December 31, 2011 were primarily related to the acquisition of the Company's Korean distributor on January 11, 2012. The intangible assets acquired are primarily being amortized over seven years.

Contingencies

6 Months Ended

Jun. 30, 2012

Contingencies

NOTE 5. 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 occurred on February 16, 2012, and on May 22, 2012 the Company’s motion was granted. The complaint was dismissed with prejudice, and a final judgment was entered in the Company’s favor on June 1, 2012. Plaintiffs filed a notice of appeal on June 20, 2012.

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 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 Accounting Standards Codification
-Topic 825
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6449706&loc=d3e16207-108621

Reference 2: 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 3: 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 4: 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 5: 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 6: 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 7: 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.

+ Details

Stockholders' Equity

6 Months Ended

Jun. 30, 2012

Stockholders' Equity

NOTE 6. STOCKHOLDERS’ EQUITY

Stock Repurchase Program

As of June 30, 2012, the total amount authorized by the Company’s Board of Directors (the “Board”) and cumulative repurchases made to date were $1,248.7 million and $695.7 million, respectively. As of June 30, 2012, the remaining authorized amount of share repurchases that may be made under the Board-authorized share repurchase program was approximately $553.0 million.

The following table provides the stock repurchase activities during the three and six months ended June 30, 2012 and 2011 (in millions, except per share amounts):


	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
Shares repurchased		0.1		0.4		0.1		0.4
Average price per share	$	523.06	$	347.12	$	523.06	$	345.15
Value of shares repurchased	$	15.2	$	139.1	$	15.2	$	150.7

- 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 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

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-Paragraph 2
-Subparagraph (SAB TOPIC 4.E)
-URI http://asc.fasb.org/extlink&oid=6228006&loc=d3e74512-122707

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-Name Accounting Standards Codification
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-Subparagraph (SX 210.5-02.29-31)
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-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770

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-Publisher FASB
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Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Preferred Stock
-URI http://asc.fasb.org/extlink&oid=6521494

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-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 43
-Section B
-Paragraph 7, 11A
-Chapter 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 15: 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 16: http://www.xbrl.org/2003/role/presentationRef
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-Number 5
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-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 17: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph d
-Article 4

Reference 18: 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 19: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section E

Reference 20: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Article 4

Reference 21: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
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Reference 22: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-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 23: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

+ Details

Stock-Based Compensation

6 Months Ended

Jun. 30, 2012

Stock-Based Compensation

NOTE 7. STOCK-BASED COMPENSATION

Stock Option Plans

A summary of stock option activity under all stock plans for the six months ended June 30, 2012 is presented as follows (in millions, except per share amounts):


				Stock Options Outstanding
	Shares						Weighted Average
	Available			Number			Exercise Price
	for Grant			Outstanding			Per Share
Balance at December 31, 2011		1.6			4.7		$	254.19
Options authorized		1.3			—			—
Options granted		(0.7	)		0.7			508.70
Options exercised		—			(0.6	)		219.52
Options forfeited/expired		0.1			(0.1	)		349.37

Balance at June 30, 2012		2.3			4.7		$	296.03

As of June 30, 2012, 2.4 million options were exercisable at a weighted-average price of $223.89 per share.

New Option Grant Practice

In the past, annual stock option awards were granted on February 15th (or the next business day if February 15th was not a business day). These stock option awards typically vested 1/8 at the end of six months and 1/48 per month thereafter through a four year period and had a ten year term. Beginning 2012, to help promote retention, stock options are awarded bi-annually on February 15th and August 15th (or the next business day if the date is not a business day). The February 15th stock option awards are subjected to a four-year vesting period, while the August 15th stock option awards are subjected to a 3.5-year vesting period, with 7/48 vesting at the end of one month and 1/48 per month thereafter.

Employee Stock Purchase Plan

Under the Employee Stock Purchase Plan (“ESPP”), employees purchased approximately 0.1 million shares for $13.9 million and 0.1 million shares for $10.4 million during the six months ended June 30, 2012 and 2011, respectively.

Stock-based Compensation

The following table summarizes stock-based compensation charges (in millions):


	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
Cost of sales - products	$	3.1	$	3.2	$	6.2	$	6.0
Cost of sales - services		2.7		2.8		5.5		5.3

Total cost of sales		5.8		6.0		11.7		11.3
Selling, general and administrative		20.3		21.4		41.5		41.6
Research and development		7.2		7.4		14.5		14.0

Stock-based compensation expense before income taxes		33.3		34.8		67.7		66.9
Income taxes		10.1		11.2		21.1		21.7

Stock-based compensation expense after income tax effect	$	23.2	$	23.6	$	46.6	$	45.2

The fair value of each option grant and the fair value of the option component of the ESPP shares were estimated at the date of grant using the Black-Scholes option pricing model with the following weighted average assumptions, assuming no expected dividends:


	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2012			2011			2012			2011
Stock Options
Average risk free interest rate		0.75	%		1.95	%		0.81	%		2.30	%
Average expected term (years)		4.3			4.6			4.5			4.8
Average expected volatility		32	%		35	%		32	%		35	%
Weighted average fair value at grant date	$	149.90		$	113.55		$	143.50		$	114.67
Total stock-based compensation expense (in millions)	$	30.2		$	32.8		$	61.8		$	62.8

ESPP
Average risk free interest rate								0.16	%		0.37	%
Average expected term (years)								1.3			1.3
Average expected volatility								32	%		35	%
Weighted average fair value at grant date							$	133.75		$	97.07
Total stock-based compensation expense (in millions)	$	3.1		$	2.0		$	5.9		$	4.1

There were no new ESPP offerings during the three months ended June 30, 2012 and 2011.

- 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 Accounting Standards Codification
-Topic 505
-SubTopic 50
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14

Reference 7: 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 8: 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.

+ Details

Income Taxes

6 Months Ended

Jun. 30, 2012

Income Taxes

NOTE 8. INCOME TAXES

Income tax expense for the three months ended June 30, 2012 was $74.4 million, or 32.4% of pre-tax income, compared with $54.8 million, or 31.8% of pre-tax income for the three months ended June 30, 2011. Income tax expense for the six months ended June 30, 2012 was $128.0 million, or 30.0% of pre-tax income, compared with $104.3 million, or 32.0% of pre-tax income for the six months ended June 30, 2011. The effective tax rates for the three and six month periods ended June 30, 2012 and 2011 differ from the U.S. federal statutory rate of 35% due primarily to the effect of income earned by certain of our overseas entities being taxed at rates lower than the federal statutory rate, partially offset by state income taxes, net of federal benefit, non-deductible stock option expenses, and research and development (“R&D”) credits in 2011. The higher effective rate for the three months ended June 30, 2012 compared with the same period in 2011 is primarily due to a lower proportion of foreign earnings. The lower effective tax rate for the six months ended June 30, 2012 compared with the same period in 2011 is primarily due to the discrete recognition of certain previously unrecognized tax benefits as a result of new IRS guidance issued in February 2012, partially offset by the expiration of federal R&D credit.

As of June 30, 2012, the Company had total gross unrecognized tax benefits of approximately $97.2 million compared with approximately $98.1 million as of December 31, 2011, representing a decrease of approximately $0.9 million during the six months ended June 30, 2012, which is primarily related to the release of reserves due to re-evaluation of certain previously unrecognized tax positions as a result of new IRS guidance issued in February 2012, partially offset by increases during the first half of 2012 related to other uncertain tax positions. Of the total gross unrecognized tax benefits, $92.9 million and $93.8 million as of June 30, 2012 and December 31, 2011, respectively, if recognized, would reduce the Company’s effective tax rate in the period of recognition. Gross interest related to unrecognized tax benefit accrued was approximately $8.8 million and $7.9 million, respectively, as of June 30, 2012 and December 31, 2011.

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 limitations currently remains open for all years since inception due to utilization of net operating losses and R&D 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

+ Details

Net Income per Share

6 Months Ended

Jun. 30, 2012

Net Income per Share

NOTE 9. NET INCOME PER SHARE

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


	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
Net income	$	154.9	$	117.4	$	298.4	$	221.5
Basic:
Weighted-average shares outstanding		39.9		39.2		39.7		39.2

Basic net income per share	$	3.88	$	2.99	$	7.52	$	5.65

Diluted:
Weighted-average shares outstanding used in basic calculation		39.9		39.2		39.7		39.2
Add common stock equivalents		1.4		1.1		1.4		1.0

Weighted-average shares used in computing diluted net income per share		41.3		40.3		41.1		40.2

Diluted net income per share	$	3.75	$	2.91	$	7.26	$	5.51

Employee stock options to purchase approximately 0.7 million and 2.5 million weighted shares for the three months ended June 30, 2012 and 2011, respectively, and 0.6 million and 2.2 million weighted shares for the six months ended June 30, 2012 and 2011, 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.

Summary of Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2012

Basis of Presentation

Basis of Presentation

Revenue Recognition

Revenue Recognition

•

New Accounting Standards Recently Adopted

New Accounting Standards Recently Adopted

- Definition

Disclosure of accounting policy for revenue recognition. If the entity has different policies for different types of revenue transactions, the policy for each material type of transaction is generally disclosed. If a sales transaction has multiple element arrangements (for example, delivery of multiple products, services or the rights to use assets) the disclosure may indicate the accounting policy for each unit of accounting as well as how units of accounting are determined and valued. The disclosure may encompass important judgment as to appropriateness of principles related to recognition of revenue. The disclosure also may indicate the entity's treatment of any unearned or deferred revenue that arises from the transaction.

+ References + Details

Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2012

Summary of Cash and Available-For-Sale Securities


	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Cash and Cash Equivalents		Short- term Investments		Long- term Investments
June 30, 2012
Cash	$	52.7	$	—	$	—		$	52.7	$	52.7	$	—	$	—
Level 1:
Money market funds		405.4		—		—			405.4		405.4		—		—
U.S. Treasuries & corporate equity securities		210.1		0.3		—			210.4		—		159.1		51.3

Subtotal		615.5		0.3		—			615.8		405.4		159.1		51.3

Level 2:
Commercial paper		118.4		—		—			118.4		26.3		92.1		—
Corporate securities		826.8		3.4		(0.7	)		829.5		—		271.8		557.7
U.S. government agencies		585.1		2.1		(0.1	)		587.1		—		136.4		450.7
Non-U.S. government securities		82.6		0.4		—			83.0		—		10.5		72.5
Municipal securities		332.5		1.3		(0.1	)		333.7		—		58.2		275.5

Subtotal		1,945.4		7.2		(0.9	)		1,951.7		26.3		569.0		1,356.4

Level 3:
Municipal securities		13.0		—		(2.0	)		11.0		—		—		11.0

Subtotal		13.0		—		(2.0	)		11.0		—		—		11.0

Total	$	2,626.6	$	7.5	$	(2.9	)	$	2,631.2	$	484.4	$	728.1	$	1,418.7


	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		—		—
U.S. 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
U.S. government agencies		521.1		1.4		(0.1	)		522.4		—		126.6		395.8
Non-U.S. 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

Summary Of Contractual Maturities Of Cash Equivalents And Available-For-Sale Investments

The following table summarizes the contractual maturities of the Company’s cash equivalents and available-for-sale investments excluding corporate equity securities at June 30, 2012 (in millions):


	Amortized Cost		Fair Value
Mature in less than one year	$	1,158.3	$	1,159.1
Mature in one to five years		1,402.0		1,407.6
Mature in more than five years		13.0		11.0

Total	$	2,573.3	$	2,577.7

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References

Reference 1: 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

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-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27357-111563

Reference 7: 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 8: 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 9: 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 10: 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.

+ Details

Balance Sheet Details (Tables)

6 Months Ended

Jun. 30, 2012

Schedule of Inventory Details

The following table provides inventory details (in millions):


	June 30, 2012		December 31, 2011
Inventory
Raw materials	$	34.3	$	34.8
Work-in-process		3.3		2.5
Finished goods		81.8		74.8

Total	$	119.4	$	112.1

Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2012

Schedule of Stock Repurchase Activities

The following table provides the stock repurchase activities during the three and six months ended June 30, 2012 and 2011 (in millions, except per share amounts):


	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
Shares repurchased		0.1		0.4		0.1		0.4
Average price per share	$	523.06	$	347.12	$	523.06	$	345.15
Value of shares repurchased	$	15.2	$	139.1	$	15.2	$	150.7

Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2012

Summary of Stock Option Activity under All Stock Plans

A summary of stock option activity under all stock plans for the six months ended June 30, 2012 is presented as follows (in millions, except per share amounts):


				Stock Options Outstanding
	Shares						Weighted Average
	Available			Number			Exercise Price
	for Grant			Outstanding			Per Share
Balance at December 31, 2011		1.6			4.7		$	254.19
Options authorized		1.3			—			—
Options granted		(0.7	)		0.7			508.70
Options exercised		—			(0.6	)		219.52
Options forfeited/expired		0.1			(0.1	)		349.37

Balance at June 30, 2012		2.3			4.7		$	296.03

Summary of Stock-Based Compensation Charges

The following table summarizes stock-based compensation charges (in millions):


	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
Cost of sales - products	$	3.1	$	3.2	$	6.2	$	6.0
Cost of sales - services		2.7		2.8		5.5		5.3

Total cost of sales		5.8		6.0		11.7		11.3
Selling, general and administrative		20.3		21.4		41.5		41.6
Research and development		7.2		7.4		14.5		14.0

Stock-based compensation expense before income taxes		33.3		34.8		67.7		66.9
Income taxes		10.1		11.2		21.1		21.7

Stock-based compensation expense after income tax effect	$	23.2	$	23.6	$	46.6	$	45.2

Fair Value of Each Option Grant and Fair Value of Option Component of ESPP Shares, Weighted Average Assumptions


	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2012			2011			2012			2011
Stock Options
Average risk free interest rate		0.75	%		1.95	%		0.81	%		2.30	%
Average expected term (years)		4.3			4.6			4.5			4.8
Average expected volatility		32	%		35	%		32	%		35	%
Weighted average fair value at grant date	$	149.90		$	113.55		$	143.50		$	114.67
Total stock-based compensation expense (in millions)	$	30.2		$	32.8		$	61.8		$	62.8

ESPP
Average risk free interest rate								0.16	%		0.37	%
Average expected term (years)								1.3			1.3
Average expected volatility								32	%		35	%
Weighted average fair value at grant date							$	133.75		$	97.07
Total stock-based compensation expense (in millions)	$	3.1		$	2.0		$	5.9		$	4.1

Net Income per Share (Tables)

6 Months Ended

Jun. 30, 2012

Computation of Basic and Diluted Net Income per Share

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


	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
Net income	$	154.9	$	117.4	$	298.4	$	221.5
Basic:
Weighted-average shares outstanding		39.9		39.2		39.7		39.2

Basic net income per share	$	3.88	$	2.99	$	7.52	$	5.65

Diluted:
Weighted-average shares outstanding used in basic calculation		39.9		39.2		39.7		39.2
Add common stock equivalents		1.4		1.1		1.4		1.0

Weighted-average shares used in computing diluted net income per share		41.3		40.3		41.1		40.2

Diluted net income per share	$	3.75	$	2.91	$	7.26	$	5.51

Summary Of Cash And Available-For-Sale Securities (Detail) - USD ($) $ in Millions	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011	Dec. 31, 2010
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 2,626.6	$ 2,170.7
Gross Unrealized Gains	7.5	6.4
Gross Unrealized Losses	(2.9)	(5.3)
Fair Value	2,631.2	2,171.8
Cash and Cash Equivalents	484.4	465.8	$ 382.0	$ 279.8
Short- term Investments	728.1	563.4
Long- term Investments	1,418.7	1,142.6
Cash
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	52.7	51.6
Fair Value	52.7	51.6
Cash and Cash Equivalents	52.7	51.6
Level 1
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	615.5	587.1
Gross Unrealized Gains	0.3	0.5
Fair Value	615.8	587.6
Cash and Cash Equivalents	405.4	403.2
Short- term Investments	159.1	130.5
Long- term Investments	51.3	53.9
Level 1 \| Money Market Funds
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	405.4	403.2
Fair Value	405.4	403.2
Cash and Cash Equivalents	405.4	403.2
Level 1 \| U.S. Treasuries & Corporate Equity Securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	210.1	183.9
Gross Unrealized Gains	0.3	0.5
Fair Value	210.4	184.4
Short- term Investments	159.1	130.5
Long- term Investments	51.3	53.9
Level 2
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,945.4	1,512.0
Gross Unrealized Gains	7.2	5.9
Gross Unrealized Losses	(0.9)	(1.7)
Fair Value	1,951.7	1,516.2
Cash and Cash Equivalents	26.3	11.0
Short- term Investments	569.0	432.9
Long- term Investments	1,356.4	1,072.3
Level 2 \| Commercial Paper
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	118.4	63.5
Fair Value	118.4	63.5
Cash and Cash Equivalents	26.3	11.0
Short- term Investments	92.1	52.5
Level 2 \| Corporate Securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	826.8	586.6
Gross Unrealized Gains	3.4	3.0
Gross Unrealized Losses	(0.7)	(1.4)
Fair Value	829.5	588.2
Short- term Investments	271.8	162.4
Long- term Investments	557.7	425.8
Level 2 \| U.S. Government Agencies
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	585.1	521.1
Gross Unrealized Gains	2.1	1.4
Gross Unrealized Losses	(0.1)	(0.1)
Fair Value	587.1	522.4
Short- term Investments	136.4	126.6
Long- term Investments	450.7	395.8
Level 2 \| Non-U.S. Government Securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	82.6	68.7
Gross Unrealized Gains	0.4	0.4
Gross Unrealized Losses		(0.1)
Fair Value	83.0	69.0
Short- term Investments	10.5	1.3
Long- term Investments	72.5	67.7
Level 2 \| Municipal Securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	332.5	272.1
Gross Unrealized Gains	1.3	1.1
Gross Unrealized Losses	(0.1)	(0.1)
Fair Value	333.7	273.1
Short- term Investments	58.2	90.1
Long- term Investments	275.5	183.0
Level 3
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	13.0	20.0
Gross Unrealized Losses	(2.0)	(3.6)
Fair Value	11.0	16.4
Long- term Investments	11.0	16.4
Level 3 \| Municipal Securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	13.0	20.0
Gross Unrealized Losses	(2.0)	(3.6)
Fair Value	11.0	16.4
Long- term Investments	$ 11.0	$ 16.4

Summary Of Contractual Maturities Of Cash Equivalents And Available-For-Sale Investments (Detail) $ in Millions	Jun. 30, 2012 USD ($)
Periods of Maturity [Line Items]
Available-for-sale securities amortized cost excluding equity securities	$ 2,573.3
Available-for-sale securities fair value excluding equity securities	2,577.7
Mature In Less Than One Year
Periods of Maturity [Line Items]
Available-for-sale securities amortized cost excluding equity securities	1,158.3
Available-for-sale securities fair value excluding equity securities	1,159.1
Mature In One To Five Years
Periods of Maturity [Line Items]
Available-for-sale securities amortized cost excluding equity securities	1,402.0
Available-for-sale securities fair value excluding equity securities	1,407.6
Mature In More Than Five Years
Periods of Maturity [Line Items]
Available-for-sale securities amortized cost excluding equity securities	13.0
Available-for-sale securities fair value excluding equity securities	$ 11.0

Financial Instruments - Additional Information (Detail) € in Millions, ₩ in Millions, £ in Millions, SFr in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2012 USD ($)	Jun. 30, 2011 USD ($)	Jun. 30, 2012 USD ($)	Jun. 30, 2011 USD ($)	Jun. 30, 2012 EUR (€)	Jun. 30, 2012 KRW (₩)	Jun. 30, 2012 CHF (SFr)	Jun. 30, 2012 GBP (£)	Dec. 31, 2011 USD ($)	Dec. 31, 2011 EUR (€)	Dec. 31, 2011 KRW (₩)	Dec. 31, 2011 CHF (SFr)	Dec. 31, 2011 GBP (£)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized gains recognized on the sale of investments				$ 2.4
Accumulated other comprehensive income, net unrealized gains (losses), on investments, net of tax	$ 3.4		$ 3.4						$ 1.1
Derivative Assets	1.2		1.2						$ 3.5
Notional amounts of outstanding currency forward contract					€ 6.6	₩ 34.7				€ 0.0	₩ 0.0
Net gain (losses) recorded in accumulated other comprehensive income from cash flow hedges	1.9
Net gains (losses) reclassified to revenue		$ (1.0)		(1.6)
Notional amounts of currency forward contracts to hedge non-functional currency denominated net monetary assets and liabilities					€ 21.4	₩ 5,700.0	SFr (0.9)	£ 5.0		€ 35.0		SFr (1.7)	£ 1.8
Net foreign exchange gains (losses)	(1.1)	1.0	(0.6)	3.3
Foreign Exchange Forward \| Other Income \| Not Designated as Hedging Instrument
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	$ 1.1	$ (1.0)	$ 0.6	$ (3.2)

Inventory (Detail) - USD ($) $ in Millions	Jun. 30, 2012	Dec. 31, 2011
Inventory
Raw materials	$ 34.3	$ 34.8
Work-in-process	3.3	2.5
Finished goods	81.8	74.8
Total	$ 119.4	$ 112.1

Balance Sheet Details - Additional Information (Detail)	6 Months Ended
Balance Sheet Details - Additional Information (Detail)	Jun. 30, 2012 Year
Intangible Assets Purchased During Acquisition
Balance Sheet Details [Line Items]
Intangible assets acquired amortization period, in years	7

Contingencies - Additional Information (Detail)	Aug. 10, 2011 Day
Contingencies [Abstract]
Time limit given to plaintiffs for filing amended complaint, days	30

Stockholder's Equity - Additional Information (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2012 USD ($)
Stockholders Equity Note [Line Items]
Stock repurchase program, authorized amount	$ 1,248.7
Stock repurchase program, cumulative repurchases	695.7
Remaining authorized amount of stock repurchases	$ 553.0

Schedule Of Stock Repurchase Activities (Detail) - USD ($) $ / shares in Thousands, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Stockholders' Equity
Shares repurchased	0.1	0.4	0.1	0.4
Average price per share	$ 523,060	$ 347,120	$ 523,060	$ 345,150
Value of shares repurchased	$ 15.2	$ 139.1	$ 15.2	$ 150.7

Summary Of Stock Option Activity Under All Stock Plans (Detail) shares in Millions	6 Months Ended
	Jun. 30, 2012 $ / shares shares
Stock-Based Compensation
Beginning balance, Shares Available for Grant	1.6
Options authorized, Shares Available for Grant	1.3
Options granted, Shares Available for Grant	(0.7)
Options forfeited/expired, Shares Available for Grant	0.1
Ending balance, Shares Available for Grant	2.3
Beginning balance, Number outstanding	4.7
Options granted, Number Outstanding	0.7
Options exercised, Number Outstanding	(0.6)
Options forfeited/expired, Number Outstanding	(0.1)
Ending balance, Number Outstanding	4.7
Beginning balance, Weighted Average Exercise Price Per Share \| $ / shares	$ 254.19
Options granted, Weighted Average Exercise Price Per Share \| $ / shares	508.70
Options exercised, Weighted Average Exercise Price Per Share \| $ / shares	219.52
Options forfeited/expired, Weighted Average Exercise Price Per Share \| $ / shares	349.37
Ending balance, Weighted Average Exercise Price Per Share \| $ / shares	$ 296.03

Stock Based Compensation - Additional Information (Detail) $ / shares in Units, shares in Millions, $ in Millions	6 Months Ended
	Jun. 30, 2012 USD ($) Year $ / shares shares	Jun. 30, 2011 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options exercisable, number of shares	2.4
Options exercisable, weighted-average exercise price per share \| $ / shares	$ 223.89
February 15th Stock Option Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Initial cliff vest period, in months	6 months
Stock option award vesting period, years	4 years
Stock option plans expiration period, years \| Year	10
August 15th Stock Option Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Initial cliff vest period, in months	1 month
Stock option award vesting period, years	3 years 6 months
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Stock Purchase Plan, shares purchased by employees	0.1	0.1
Employee Stock Purchase Plan, value of shares purchased by employees \| $	$ 13.9	$ 10.4
At The End Of Six Months \| Numerator \| February 15th Stock Option Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options, vesting portion	1
At The End Of Six Months \| Denominator \| February 15th Stock Option Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options, vesting portion	8
Per Month Thereafter Through A Four Year Period And Had A Ten Year Term \| Numerator \| February 15th Stock Option Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option award, vesting portion	1
Per Month Thereafter Through A Four Year Period And Had A Ten Year Term \| Denominator \| February 15th Stock Option Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option award, vesting portion	48
At The End Of One Month \| Numerator \| August 15th Stock Option Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options, vesting portion	7
At The End Of One Month \| Denominator \| August 15th Stock Option Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options, vesting portion	48
Per Month Thereafter \| Numerator \| August 15th Stock Option Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option award, vesting portion	1
Per Month Thereafter \| Denominator \| August 15th Stock Option Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option award, vesting portion	48

Summary Of Stock-Based Compensation Charges (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense before income taxes	$ 33.3	$ 34.8	$ 67.7	$ 66.9
Income taxes	10.1	11.2	21.1	21.7
Stock-based compensation expense after income tax effect	23.2	23.6	46.6	45.2
Cost Of Sales - Products
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense before income taxes	3.1	3.2	6.2	6.0
Cost Of Sales - Services
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense before income taxes	2.7	2.8	5.5	5.3
Total Cost Of Sales
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense before income taxes	5.8	6.0	11.7	11.3
Selling, General And Administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense before income taxes	20.3	21.4	41.5	41.6
Research and Development Expense
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense before income taxes	$ 7.2	$ 7.4	$ 14.5	$ 14.0

- 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

Schedule Of Estimated Fair Value Of Option Using Black-Scholes Option Pricing Model, Weighted Average Assumptions (Detail) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2012 USD ($) Year $ / shares	Jun. 30, 2011 USD ($) Year $ / shares	Jun. 30, 2012 USD ($) Year $ / shares	Jun. 30, 2011 USD ($) Year $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 33.3	$ 34.8	$ 67.7	$ 66.9
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average risk free interest rate	0.75%	1.95%	0.81%	2.30%
Average expected term (years) \| Year	4.3	4.6	4.5	4.8
Average expected volatility	32.00%	35.00%	32.00%	35.00%
Weighted average fair value at grant date \| $ / shares	$ 149.90	$ 113.55	$ 143.50	$ 114.67
Total stock-based compensation expense	$ 30.2	$ 32.8	$ 61.8	$ 62.8
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average risk free interest rate			0.16%	0.37%
Average expected term (years) \| Year			1.3	1.3
Average expected volatility			32.00%	35.00%
Weighted average fair value at grant date \| $ / shares			$ 133.75	$ 97.07
Total stock-based compensation expense	$ 3.1	$ 2.0	$ 5.9	$ 4.1

- Definition

+ References + Details

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Income Taxes [Abstract]
Income tax expense	$ 74.4	$ 54.8	$ 128.0	$ 104.3
Income tax expense, percentage of pre-tax income	32.40%	31.80%	30.00%	32.00%
Federal statutory tax rate	35.00%	35.00%	35.00%	35.00%
Total gross unrecognized tax benefits	$ 97.2		$ 97.2		$ 98.1
Unrecognized tax benefits, period increase (decrease)			(0.9)
Unrecognized tax benefits, if recognized, would reduce the Company's effective tax rate	92.9		92.9		93.8
Gross interest related to unrecognized tax benefit accrued	$ 8.8		$ 8.8		$ 7.9

Net Income Per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Earnings Per Share Disclosure [Line Items]
Net income	$ 154.9	$ 117.4	$ 298.4	$ 221.5
Weighted-average shares outstanding	39.9	39.2	39.7	39.2
Basic net income per share	$ 3.88	$ 2.99	$ 7.52	$ 5.65
Weighted-average shares outstanding used in basic calculation	39.9	39.2	39.7	39.2
Add common stock equivalents	1.4	1.1	1.4	1.0
Weighted-average shares used in computing diluted net income per share	41.3	40.3	41.1	40.2
Diluted net income per share	$ 3.75	$ 2.91	$ 7.26	$ 5.51

- 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 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 2: 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 3: 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=16381557&loc=d3e4984-109258

Reference 4: 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=7655603&loc=d3e1252-109256

Reference 5: 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 6: 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 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 18
-Article 7

Reference 8: 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 9: 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.

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 20
-Article 5

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 21
-Article 9

+ 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

Reference 1: 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 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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-Subparagraph (SX 210.5-03.18)
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-Subparagraph (SX 210.7-04.22)
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 7: 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 8: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e565-108580

Reference 9: 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 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-Paragraph 10, 15
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Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph A7
-Appendix A

Reference 12: 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 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 19
-Article 5

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph a
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Reference 15: 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 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 20
-Article 9

+ 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 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 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1448-109256

Reference 3: 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 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 07-4
-Paragraph 4
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 8
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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-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

Net Income Per Share - Additional Information (Detail) - shares shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Employee stock options excluded from computation of diluted net income per share	0.7	2.5	0.6	2.2

- 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 Accounting Standards Codification
-Glossary Antidilution
-URI http://asc.fasb.org/extlink&oid=6505113

Reference 2: 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 3: 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 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 Statement of Financial Accounting Standard (FAS)
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-Subparagraph c
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-Paragraph 13, 14
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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.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-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.

+ Details