Fair Value Fair Value (Tables)

12 Months Ended

Dec. 31, 2014

Fair Value Disclosures [Abstract]

Fair Value, by Balance Sheet Grouping

Financial instruments accounted for at fair value on a recurring basis as of December 31, 2014 and 2013 are as follows: 

	December 31, 2014
(In millions)	Total		Quoted prices in active markets for identical assets (Level 1)		Other observable inputs (Level 2)		Unobservable inputs (Level 3)
Cash and cash equivalents	$	238.6	$	238.6	$	—	$	—

	December 31, 2013
(In millions)	Total		Quoted prices in active markets for identical assets (Level 1)		Other observable inputs (Level 2)		Unobservable inputs (Level 3)
Cash and cash equivalents	$	365.2	$	365.2	$	—	$	—