Fair Value of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2017

Fair Value Disclosures [Abstract]

Fair Value By Balance Sheet Grouping

The estimated fair value of financial instruments at June 30, 2017 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	$	154.6	$	154.6	$	154.6	$	—
Derivative financial instruments:
Assets	3.0		3.0		—		3.0
Liabilities	20.8		20.8		—		20.8
Debt (a)	1,960.1		2,122.1		1,949.5		172.6

The estimated fair value of financial instruments at December 31, 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	$	229.6	$	229.6	$	229.6	$	—
Derivative financial instruments:
Assets	9.1		9.1		—		9.1
Liabilities	18.7		18.7		—		18.7
Debt (a)	1,894.1		1,975.0		1,868.4		106.6

(a) The total carrying amount for debt excludes debt issuance costs related to the recognized debt liability which is presented in the consolidated balance sheet as a direct reduction from the carrying amount of the debt liability.