Fair Value (Tables)

12 Months Ended

Dec. 31, 2011

Fair Value [Abstract]

Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis [Table Text Block]

Financial assets and liabilities measured at fair value on a recurring basis at December 31, 2011 and 2010 were (in millions):

2011	Level 1		Level 2		Level 3	Total		Balance Sheet Classification
Assets:
Cash and cash equivalents	$	1,781.2				$	1,781.2
Short-term investments	23.8					23.8
Available-for-sale securities	3.8					3.8		Other Assets
Liabilities:
Forward foreign exchange contracts			$	0.1		$	0.1	Other Current Liabilities

2010	Level 1		Level 2		Level 3	Total		Balance Sheet Classification
Assets:
Cash and cash equivalents	$	2,288.7				$	2,288.7
Short-term investments	11.3					11.3
Forward foreign exchange contracts			$	7.2		7.2		Other Current Assets
Available-for-sale securities	3.4					3.4		Other Assets
Liabilities:
Interest rate swaps			$	24.2		$	24.2	Long-Term Liabilities

Carrying Amounts and Fair Value of Financial Instruments [Table Text Block]

The carrying amount and fair value of our financial instruments at December 31, 2011 and 2010 were (in millions):

	2011				2010
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets:
Cash and cash equivalents	$	1,781.2	$	1,781.2	$	2,288.7	$	2,288.7
Short-term investments	23.8		23.8		11.3		11.3
Forward foreign exchange contracts	—		—		7.2		7.2
Available-for-sale securities	3.8		3.8		3.4		3.4
Cost method investments	23.6		23.6		24.8		24.8
Liabilities:
Short-term borrowings	$	9.5	$	9.5	$	50.2	$	50.2
Forward foreign exchange contracts	0.1		0.1		—		—
Interest rate swaps	—		—		24.2		24.2
Debt	3,183.6		3,370.5		3,126.0		3,328.0