Financial Assets and Financial Liabilities Measured at Fair Value (Tables)

12 Months Ended

Dec. 31, 2013

Fair Value Disclosures [Abstract]

Carrying values and estimated fair values of long-term debt, including current maturities

The carrying values and estimated fair values of long-term debt, including current maturities, at December 31, 2013 and 2012 follow:

	December 31, 2013				December 31, 2012
	Carrying		Fair Value		Carrying		Fair Value
(in millions)	Value		(Level 2)		Value		(Level 2)
Total long-term debt	$	1,421.4	$	1,520.1	$	1,417.5	$	1,561.2

Fair values for derivatives

	Fair Value As of			Fair Value As of
	December 31, 2013			December 31, 2012
(in millions)	(Level 2)			(Level 2)
Interest rate swaps — net (liability) asset position	$	(20.2	)	$	17.0