Consolidated Statements of Changes in Shareholders' Equity Statement - USD ($) $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock, Common
Common stock, shares issued		68,300,000
Common Stock, Value, Issued		$ 42.2
Shares, Issued						(32,800,000)
Stockholders' Equity Attributable to Parent			$ (763.8)	$ (2,751.5)	$ 160.6	$ (1,377.7)
Stock Issued During Period, Shares, New Issues		200,000
Stock Issued During Period, Value, New Issues		$ 0.2
Stock Repurchased During Period, Shares						(100,000)
Repurchase of common stock						$ (9.0)
APIC, Share-based Payment Arrangement, Increase for Cost Recognition			17.7
Net income	$ 75.8			75.8
Dividends declared (in dollars per share)	$ 0.52
Dividends, Common Stock, Cash				(19.2)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	$ 23.9				23.9
Common stock, shares issued		68,500,000
Common Stock, Value, Issued		$ 42.4
Shares, Issued						(32,900,000)
Stockholders' Equity Attributable to Parent	$ (2,060.8)		(781.5)	(2,808.1)	184.5	$ (1,386.7)
Common stock, shares issued	68,575,974	68,600,000
Common Stock, Value, Issued	$ 42.4	$ 42.4
Shares, Issued						(33,300,000)
Stockholders' Equity Attributable to Parent	(2,029.6)		(792.2)	(2,831.5)	211.6	$ (1,424.9)
Stock Issued During Period, Shares, New Issues		100,000
Stock Issued During Period, Value, New Issues		$ 0.0
Stock Repurchased During Period, Shares						0
Repurchase of common stock						$ 0.0
APIC, Share-based Payment Arrangement, Increase for Cost Recognition			5.3
Net income	$ 77.4			77.4
Dividends declared (in dollars per share)	$ 0.55
Dividends, Common Stock, Cash				(20.3)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	$ (9.5)				(9.5)
Common stock, shares issued	68,652,432	68,700,000
Common Stock, Value, Issued	$ 42.4	$ 42.4
Shares, Issued						(33,300,000)
Stockholders' Equity Attributable to Parent	$ (2,101.5)		$ (797.5)	$ (2,888.6)	$ 202.1	$ (1,424.9)