CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (unaudited) - 6 months ended Jun. 30, 2015 - USD ($) $ in Millions	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss
Balance at Dec. 31, 2014	$ 1,236.2	$ 0.9	$ 1,372.6	$ (84.0)	$ (53.3)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(31.9)			(31.9)
Other comprehensive loss, net of tax	(43.6)				(43.6)
Stock-based compensation expense	6.6		6.6
Employee taxes related to vesting of stock-based awards	(0.4)		(0.4)
Balance at Jun. 30, 2015	$ 1,166.9	$ 0.9	$ 1,378.8	$ (115.9)	$ (96.9)