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

3 Months Ended

Mar. 31, 2014

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 at March 31, 2014 and December 31, 2013 follow:

	March 31, 2014				December 31, 2013
(in millions)	Carrying Value		Fair Value (Level 2)		Carrying Value		Fair Value (Level 2)
Long-term debt	$	1,441.5	$	1,552.3	$	1,421.4	$	1,520.1

Fair values for derivatives

	Fair Value As of		Fair Value As of
	March 31, 2014		December 31, 2013
(in millions)	(Level 2)		(Level 2)
Interest rate swaps — net liability position	$	13.5	$	20.2