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						(400,000)
Repurchase of common stock						$ (42.2)
APIC, Share-based Payment Arrangement, Increase for Cost Recognition			20.9
Net income	$ 78.4			78.4
Dividends, Common Stock, Cash				(38.3)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	56.7				56.7
Common stock, shares issued		68,500,000
Common Stock, Value, Issued		$ 42.4
Shares, Issued						(32,900,000)
Stockholders' Equity Attributable to Parent			(781.5)	(2,808.1)	184.5	$ (1,386.7)
Stock Issued During Period, Shares, New Issues		0
Stock Issued During Period, Value, New Issues		$ 0.0
Stock Repurchased During Period, Shares						(300,000)
Repurchase of common stock						$ (33.2)
APIC, Share-based Payment Arrangement, Increase for Cost Recognition			3.2
Net income	$ 2.6			2.6
Dividends declared (in dollars per share)	$ 0.52
Dividends, Common Stock, Cash				(19.1)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	$ 32.8				32.8
Common stock, shares issued		68,500,000
Common Stock, Value, Issued		$ 42.4
Shares, Issued						(33,200,000)
Stockholders' Equity Attributable to Parent	$ (1,981.5)		(784.7)	(2,791.6)	217.3	$ (1,419.9)
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		200,000
Stock Issued During Period, Value, New Issues		$ 0.1
Stock Repurchased During Period, Shares						0
Repurchase of common stock						$ 0.0
APIC, Share-based Payment Arrangement, Increase for Cost Recognition			15.6
Net income	140.7			140.7
Dividends, Common Stock, Cash				(40.6)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(33.5)				(33.5)
Common stock, shares issued		68,700,000
Common Stock, Value, Issued		$ 42.4
Shares, Issued						(33,300,000)
Stockholders' Equity Attributable to Parent			(797.5)	(2,888.6)	202.1	$ (1,424.9)
Stock Issued During Period, Shares, New Issues		100,000
Stock Issued During Period, Value, New Issues		$ 0.1
Stock Repurchased During Period, Shares						0
Repurchase of common stock						$ 0.0
APIC, Share-based Payment Arrangement, Increase for Cost Recognition			10.3
Net income	$ 63.3
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	$ (24.0)				(24.0)
Common stock, shares issued	68,756,041	68,800,000
Common Stock, Value, Issued	$ 42.5	$ 42.5
Shares, Issued						(33,300,000)
Stockholders' Equity Attributable to Parent	$ (2,178.9)		$ (807.8)	$ (2,931.6)	$ 178.1	$ (1,424.9)