Fair Value (Tables)

9 Months Ended

Sep. 30, 2012

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 were (in millions):

September 30, 2012	Level 1		Level 2		Level 3	Total		Balance Sheet Classification
Assets:
Cash and cash equivalents	$	1,956.3				$	1,956.3
Short-term investments	16.5					16.5
Forward foreign exchange contracts			$	0.7		0.7		Other Current Assets
Available-for-sale securities	3.9					3.9		Other Assets

December 31, 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

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

The carrying amount and fair value of our financial instruments at September 30, 2012 and December 31, 2011 were (in millions):

	2012				2011
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets:
Cash and cash equivalents	$	1,956.3	$	1,956.3	$	1,781.2	$	1,781.2
Short-term investments	16.5		16.5		23.8		23.8
Forward foreign exchange contracts	0.7		0.7		—		—
Available-for-sale securities	3.9		3.9		3.8		3.8
Cost method investments	24.2		24.2		23.6		23.6
Liabilities:
Short-term borrowings	$	11.1	$	11.1	$	9.5	$	9.5
Forward foreign exchange contracts	—		—		0.1		0.1
Debt	4,451.0		4,907.0		3,183.6		3,370.5