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Fair Value Measurement of Assets and Liabilities (Tables)

6 Months Ended

Jun. 30, 2012

Fair Value Measurement of Assets and Liabilities [Abstract]

Fair Value Measurement of Assets and Liabilities


		As of June 30, 2012
Description		Recorded Balance				Fair Value Measurements at Reporting Date Using:
Description		Recorded Balance				Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)
Assets
Available-for-sale securities
Corporate debt securities		$	296.5			$	—			$	296.5			$	—
U.S. government and agency debt securities			230.5				—				230.5				—
Foreign government debt securities			2.8				—				2.8				—
Commercial paper			183.3				—				183.3				—
Certificates of deposit			70.8				—				70.8				—

Total available-for-sale securities			783.9				—				783.9				—
Derivatives, current and long-term
Foreign currency forward contracts and options			35.2				—				35.2				—
Interest rate swaps			32.9				—				32.9				—

		$	852.0			$	—			$	852.0			$	—

Liabilities
Derivatives, current and long-term
Foreign currency forward contracts and options		$	4.7			$	—			$	4.7			$	—


		As of December 31, 2011
		Recorded Balance				Fair Value Measurements at Reporting Date Using:
Description		Recorded Balance				Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)
Assets
Available-for-sale securities
Corporate debt securities		$	324.7			$	—			$	324.7			$	—
U.S. government and agency debt securities			177.2				—				177.2				—
Municipal bonds			1.0				—				1.0				—
Foreign government debt securities			6.8				—				6.8				—
Commercial paper			74.5				—				74.5				—
Certificates of deposit			88.5				—				88.5				—

Total available-for-sale securities			672.7				—				672.7				—
Derivatives, current and long-term
Foreign currency forward contracts and options			18.3				—				18.3				—
Interest rate swaps			27.8				—				27.8				—

		$	718.8			$	—			$	718.8			$	—

Liabilities
Derivatives, current and long-term
Foreign currency forward contracts and options		$	25.2			$	—			$	25.2			$	—
Cross-currency interest rate swaps			8.2				—				8.2				—

		$	33.4			$	—			$	33.4			$	—