Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2013

Fair Value Measurements

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

			Quoted Prices
			In Active		Significant
			Markets for		Other		Significant
	Balance at		Identical		Observable		Unobservable
	September 30		Assets		Inputs		Inputs
(in millions)	2013		Level 1		Level 2		Level 3
Cash and cash equivalents	$	332.4	$	332.4	$	—	$	—
Short-term investments	1.3		1.3		—		—
Commodity swap agreements	—		—		—		—
Foreign currency forward contracts	0.4		—		0.4		—
Total assets measured at fair value	$	334.1	$	333.7	$	0.4	$	—
Commodity swap agreements	$	0.8	$	—	$	0.8	$	—
Contingent consideration	9.5		—		—		9.5
Total liabilities measured at fair value	$	10.3	$	—	$	0.8	$	9.5

			Quoted Prices
			In Active		Significant
			Markets for		Other		Significant
	Balance at		Identical		Observable		Unobservable
	December 31,		Assets		Inputs		Inputs
(in millions)	2012		Level 1		Level 2		Level 3
Cash and cash equivalents	$	112.5	$	112.5	$	—	$	—
Short-term investments	0.6		0.6		—		—
Commodity swap agreements	0.1		—		0.1		—
Foreign currency forward contracts	0.3		—		0.3		—
Total assets measured at fair value	$	113.5	$	113.1	$	0.4	$	—
Contingent consideration	$	9.9	$	—	$	—	$	9.9
Total liabilities measured at fair value	$	9.9	$	—	$	—	$	9.9