Fair Value of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2016

Fair Value Disclosures [Abstract]

Fair Value By Balance Sheet Grouping

The estimated fair value of financial instruments at June 30, 2016 was as follows:

			Fair Value Measurements at Reporting Date Using
(In millions)	Total Carrying Amount		Total Estimated Fair Value		Quoted Prices in Active Markets for Identical Assets(Level 1)		Significant Observable Inputs (Level 2)
Cash and cash equivalents	$	322.3	$	322.3	$	322.3	$	—
Derivative financial instruments:
Assets	6.4		6.4		—		6.4
Liabilities	36.3		36.3		—		36.3
Debt (a)	1,895.6		1,725.3		1,617.2		108.1

The estimated fair value of financial instruments at December 31, 2015 was as follows:

			Fair Value Measurements at Reporting Date Using
(In millions)	Total Carrying Amount		Total Estimated Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)
Cash and cash equivalents	$	149.8	$	149.8	$	149.8	$	—
Derivative financial instruments:
Assets	2.4		2.4		—		2.4
Liabilities	71.3		71.3		—		71.3
Debt (a)	1,505.2		969.7		964.5		5.2