Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2011

Fair Value Measurements

Schedule of assets and liabilities measured on a recurring basis, at fair value

	June 30, 2011
	Level 1		Level 2		Level 3		Total
Treasury bills	$	149.6	$	—	$	—	$	149.6
FDIC insured corporate bonds	128.0		—		—		128.0
Commercial paper	102.9		52.5		—		155.4
Money market instruments	—		2.8		—		2.8
Derivative instrument	—		—		—		—
Total	$	380.5	$	55.3	$	—	$	435.8

	December 31, 2010
	Level 1		Level 2		Level 3		Total
Treasury bills	$	136.2	$	79.5	$	—	$	215.7
FDIC insured corporate bonds	129.4		—		—		129.4
Commercial paper	128.6		62.8		—		191.4
Money market instruments	—		0.6		—		0.6
Derivative instrument	—		0.3		—		0.3
Total	$	394.2	$	143.2	$	—	$	537.4

Schedule of assets and liabilities measured on a nonrecurring basis, at fair value

	June 30, 2011
	Level 1		Level 2		Level 3		Total
Property,plant and equipment, net	$	—	$	—	$	62.4	$	62.4
Goodwill	—		—		67.1		67.1
Intangible assets, net	—		—		28.4		28.4
Restructuring liability	—		—		11.6		11.6
Total	$	—	$	—	$	169.5	$	169.5

	December 31, 2010
	Level 1		Level 2		Level 3			Total
Property,plant and equipment, net	$	—	$	—	$	42.3		$	42.3
Goodwill	—		—		52.0			52.0
Intangible assets, net	—		—		16.9			16.9
Restructuring liability	—		—		(1.0		)	(1.0		)
Total	$	—	$	—	$	110.2		$	110.2