Condensed Consolidated Statements of Redeemable Equity and Stockholder Equity (Unaudited) - 6 months ended Jun. 30, 2015 - USD ($) shares in Millions, $ in Millions	Total	Redeemable Equity	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss	Stockholder Equity
Beginning balance, redeemable equity at Dec. 31, 2014	$ 51.4	$ 51.4
Increase (decrease) in redeemable equity:
Reclassifications to state redeemable equity at redemption value		(5.5)
Ending balance, redeemable equity at Jun. 30, 2015	45.9	$ 45.9
Beginning balance, stockholder's equity, shares at Dec. 31, 2014			131.4
Beginning balance, stockholder's equity at Dec. 31, 2014	1,339.7		$ 1.3	$ 1,716.3	$ (148.0)	$ (229.9)	$ 1,339.7
Increase (decrease) in stockholder equity:
Share-based compensation expense				2.4			2.4
Reclassifications to state redeemable equity at redemption value				5.5			5.5
Net income	89.8				89.8		89.8
Other comprehensive loss	(129.5)					(129.5)	(129.5)
Ending balance, stockholder's equity, shares at Jun. 30, 2015			131.4
Ending balance, stockholder's equity at Jun. 30, 2015	$ 1,307.9		$ 1.3	$ 1,724.2	$ (58.2)	$ (359.4)	$ 1,307.9