Condensed Consolidated Statement Of Equity And Comprehensive Income (USD $) In Millions	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income [Member]	Treasury Stock [Member]	Non-Controlling Interest [Member]	Comprehensive Income [Member]	Total
Balance at Dec. 31, 2010	$ 667.3	$ 1.2	$ 76.2	$ (183.2)	$ 21.2	$ (40.9)	$ 276.4		$ 818.2
Net income				161.9			57.3	219.2	219.2
Other comprehensive income (loss), net					(11.8)		16.1	4.3	4.3
Equity transaction with noncontrolling interest, net			0.3				0.4		0.7
Cash dividends				(39.6)			(24.7)		(64.3)
Treasury stock acquired						(9.5)			(9.5)
Other, net			4.5			0.8			5.3
Comprehensive income								223.5
Balance at Sep. 30, 2011	$ 667.3	$ 1.2	$ 81.0	$ (60.9)	$ 9.4	$ (49.6)	$ 325.5		$ 973.9