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3. Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2012

Fair Value Measurements [Abstract]

Schedule of financial assets and liabilities carried at fair value on a recurring basis

Financial assets and liabilities carried at fair value and measured on a recurring basis as of March 31, 2012 are classified in the hierarchy as follows (in millions):

	Level 1				Level 2				Level 3				Total
Financial Assets Carried at Fair Value:
Cash equivalents (a):
Commercial paper	$	—			$	146.3			$	—			$	146.3
Municipals	—				5.0				—				5.0
Foreign government obligations	—				8.7				—				8.7
Time deposits	26.0				5.0				—				31.0
Money market funds	7.0				—				—				7.0
Total cash equivalents	33.0				165.0				—				198.0
Available-for-sale investments (b):
Corporate debt securities	—				170.1				—				170.1
Brokered certificates of deposit	—				1.8				—				1.8
U.S. government sponsored agencies	—				57.9				—				57.9
Foreign government obligations	—				10.1				—				10.1
Municipal obligations	—				3.1				—				3.1
Marketable equity securities	175.5				—				—				175.5
Asset-backed securities	—				18.8				—				18.8
Total available-for-sale investments	175.5				261.8				—				437.3
Forward foreign exchange contracts (c)	—				0.3				—				0.3
Total financial assets carried at fair value	$	208.5			$	427.1			$	—			$	635.6
Financial Liabilities Carried at Fair Value:
Forward foreign exchange contracts (d)	$	—			$	0.6			$	—			$	0.6
Contingent consideration (e)	—				—				24.7				24.7
Total financial liabilities carried at fair value	$	—			$	0.6			$	24.7			$	25.3

Financial assets and liabilities carried at fair value and measured on a recurring basis as of December 31, 2011 are classified in the hierarchy as follows (in millions):

	Level 1				Level 2				Level 3				Total
Financial Assets Carried at Fair Value:
Cash equivalents (a):
Commercial paper	$	—			$	106.0			$	—			$	106.0
Bonds	—				8.6				—				8.6
Time deposits	21.6				—				—				21.6
Money market funds	58.3				—				—				58.3
Total cash equivalents	79.9				114.6				—				194.5
Available-for-sale investments (b):
Corporate debt securities	—				170.6				—				170.6
Brokered certificates of deposit	—				1.8				—				1.8
U.S. government sponsored agencies	—				36.9				—				36.9
Foreign government obligations	—				5.7				—				5.7
Municipal obligations	—				5.0				—				5.0
Marketable equity securities	134.8				—				—				134.8
Asset-backed securities	—				11.2				—				11.2
Total available-for-sale investments	134.8				231.2				—				366.0
Forward foreign exchange contracts (c)	—				0.8				—				0.8
Total financial assets carried at fair value	$	214.7			$	346.6			$	—			$	561.3
Financial Liabilities Carried at Fair Value:
Forward foreign exchange contracts (d)	$	—			$	1.2			$	—			$	1.2
Contingent consideration (e)	—				—				24.1				24.1
Total financial liabilities carried at fair value	$	—			$	1.2			$	24.1			$	25.3

(a) Cash equivalents are included in Cash and cash equivalents in the Condensed Consolidated Balance Sheets.

(b) Available-for-sale investments are included in the following accounts in the Condensed Consolidated Balance Sheets (in millions):

	March 31, 2012				December 31, 2011
Short-term investments	$	273.2			$	238.8
Other assets	164.1				127.2
Total	$	437.3			$	366.0

(c) Forward foreign exchange contracts in an asset position are included in Prepaid expenses, taxes and other current assets in the Condensed Consolidated Balance Sheets.

(d) Forward foreign exchange contracts in a liability position are included in Other current liabilities in the Condensed Consolidated Balance Sheets.

(e) Contingent consideration liability is included in the following accounts in the Condensed Consolidated Balance Sheet (in millions):

	March 31, 2012				December 31, 2011
Other current liabilities	$	14.9			$	8.5
Other long-term liabilities	9.8				15.6
Total	$	24.7			$	24.1

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

The following table provides a reconciliation of the Level 3 contingent consideration measured at fair value based on third party pricing without adjustment for the period ended March 31, 2012 (in millions):

	2012
January 1	$	24.1
Increase in fair value included in Selling, general and administrative expense	0.6
March 31	$	24.7

Discussion of current derivative risk management

The following is a summary of our forward foreign currency exchange contracts (in millions):

	March 31,
	2012
Contracts maturing in April through June 2012 to sell foreign currency:
Notional value	$	49.8
Unrealized loss	$	—
Contracts maturing in April through June 2012 to purchase foreign currency:
Notional value	$	345.1
Unrealized loss	$	0.3

Schedule of available-for-sale investments

Available-for-sale investments consist of the following (in millions):

	March 31, 2012
	Amortized Cost				Unrealized Gains				Unrealized Losses				Estimated Fair Value
Short-term investments:
Corporate debt securities	$	169.7			$	0.5			$	(0.1	)		$	170.1
Brokered certificates of deposit	1.8				—				—				1.8
Municipal obligations	3.1				—				—				3.1
Asset-backed securities	18.4				0.1				—				18.5
U.S. government sponsored agencies	58.0				—				(0.1		)		57.9
Foreign government obligations	9.7				—				—				9.7
Marketable equity securities	11.8				0.3				—				12.1
	272.5				0.9				(0.2		)		273.2
Long-term investments:
Marketable equity securities	57.5				106.4				(0.5		)		163.4
Asset-backed securities	0.5				—				(0.2		)		0.3
Foreign government obligations	0.4				—				—				0.4
	58.4				106.4				(0.7		)		164.1
Total	$	330.9			$	107.3			$	(0.9	)		$	437.3

	December 31, 2011
	Amortized Cost				Unrealized Gains				Unrealized Losses				Estimated Fair Value
Short-term investments:
Corporate debt securities	$	170.9			$	0.1			$	(0.4	)		$	170.6
Brokered certificates of deposit	1.8				—				—				1.8
Municipal obligations	5.0				—				—				5.0
Asset-backed securities	10.8				—				—				10.8
U.S. government sponsored agencies	36.8				0.1				—				36.9
Foreign government obligations	5.4				—				—				5.4
Marketable equity securities	7.7				0.6				—				8.3
	238.4				0.8				(0.4		)		238.8
Long-term investments:
Marketable equity securities	57.2				70.0				(0.7		)		126.5
Asset-backed securities	0.5				—				(0.1		)		0.4
Foreign government obligations	0.3				—				—				0.3
	58.0				70.0				(0.8		)		127.2
Total	$	296.4			$	70.8			$	(1.2	)		$	366.0

Summary of fair value of gross unrealized losses for investments with unrealized losses

The following is a summary of investments with gross unrealized losses and the associated fair value (in millions):

	March 31, 2012				December 31, 2011
Fair value	$	94.4			$	77.8
Gross unrealized losses for investments in a loss position 12 months or more	$	0.3			$	0.4
Gross unrealized losses for investments in a loss position less than 12 months	$	0.6			$	0.8

Summary of amortized cost and estimated fair value of debt securities by contractual maturity date

The following is a summary of the amortized cost and estimated fair value of our debt securities at March 31, 2012 by contractual maturity date (in millions):

	Amortized Cost				Estimated Fair Value
Mature in less than one year	$	138.5			$	138.5
Mature in one to five years	78.2				78.4
Mature in more than five years	44.9				44.9
Total	$	261.6			$	261.8

Estimated fair value of financial instruments

The estimated fair value of our financial instruments and the level of the fair value hierarchy within which the fair value measurements is categorized are as follows (in millions):

	March 31, 2012										December 31, 2011
	Carrying  Amount				Estimated  Fair  Value				Fair Value Hierarchy Level		Carrying  Amount				Estimated  Fair  Value				Fair Value Hierarchy Level
Other assets	$	226.8			$	343.1			1		$	186.6			$	252.4			1
Total long-term debt, excluding leases and current maturities	$	719.3			$	766.3			2		$	719.1			$	759.1			2

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Discussion of Current Derivative Risk Management [Table Text Block]

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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.

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Tabular disclosure of the fair value measurement of liabilities 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 liability.

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Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

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For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value).

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