Statement of Consolidated Stockholders' Equity - 6 months ended Jun. 30, 2015 - USD ($) $ in Millions	Total	Common Stock	Additional Paid in Capital	Retained Earnings (Accumulated Deficit)	Treasury Stock	Accumulated Other Comprehensive Loss
Beginning balance, shares at Dec. 31, 2014	17,607,251	17,607,251
Beginning balance at Dec. 31, 2014	$ 1,015.9	$ 0.2	$ 1,028.5	$ 280.4	$ (197.1)	$ (96.1)
Stockholders' Equity [Roll Forward]
Net loss	(272.0)			(272.0)
Other comprehensive income, net of tax	67.3					67.3
Issuance of non-vested shares to employees and non-employee directors		62,285
Issuance of common shares to non-employee directors		2,436
Issuance of common shares to non-employee directors	0.2		0.2
Issuance of common shares to employees upon vesting of restricted stock units and performance shares		50,809
Cancellation of employee non-vested shares		(540)
Cancellation of shares to cover employees’ tax withholdings upon vesting of non-vested shares		(34,969)
Cancellation of shares to cover employees’ tax withholdings upon vesting of non-vested shares	(3.0)		(3.0)
Repurchase of common stock		(552,454)
Repurchase of common stock	(41.5)				(41.5)
Cash dividends on common stock ($0.80 per share)	(14.0)			(14.0)
Excess tax benefit upon vesting of non-vested shares and dividend payment on unvested shares expected to vest	1.1		1.1
Amortization of unearned equity compensation	4.6		4.6
Dividends on unvested equity awards that were canceled	$ (0.2)			0.2
Ending balance, shares at Jun. 30, 2015	17,134,818	17,134,818
Ending balance at Jun. 30, 2015	$ 758.8	$ 0.2	$ 1,031.4	$ (5.4)	$ (238.6)	$ (28.8)