Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2013

Schedule of Assets And Liabilities Measured at Fair Value Recurring Basis

The following tables present our assets and liabilities that are measured at fair value on a recurring basis at March 31, 2013:

	Fair Value Measurements at March 31, 2013
Assets	Total			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
	(in millions)
Marketable securities	$	13.9		$	13.9	$	—		$	—
Hedging contracts		25.5			—		25.5			—
Total	$	39.4		$	13.9	$	25.5		$	—
	Fair Value Measurements at March 31, 2013
Liabilities	Total			Quoted Prices in Active Markets for Identical Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
	(in millions)
Hedging contracts	($	8.4	)	$	—	($	8.4	)	$	—
Total	($	8.4	)	$	—	($	8.4	)	$	—

The following tables present our assets and liabilities that are measured at fair value on a recurring basis at December 31, 2012:

	Fair Value Measurements at December 31, 2012
Assets	Total			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
	(in millions)
Marketable securities	$	13.5		$	13.5	$	—		$	—
Hedging contracts		48.9			—		48.9			—
Total	$	62.4		$	13.5	$	48.9		$	—
	Fair Value Measurements at December 31, 2012
Liabilities	Total			Quoted Prices in Active Markets for Identical Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
	(in millions)
Hedging contracts	($	1.6	)	$	—	($	1.6	)	$	—
Total	($	1.6	)	$	—	($	1.6	)	$	—