Consolidated Statements of Equity (Deficit) (USD $) In Millions, unless otherwise specified	Total	Common Stock and Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss	Noncontrolling Interests
Balance at Dec. 31, 2010	$ (68.8)	$ 456.6	$ 31.7	$ (45.9)	$ (518.1)	$ 6.9
Increase (Decrease) in Stockholders' Equity
Net income (loss)	54.0		54.2			(0.2)
Stock plan activity	3.3	1.1		2.2
Other comprehensive income	15.7				15.7
Balance at Mar. 31, 2011	4.2	457.7	85.9	(43.7)	(502.4)	6.7
Balance at Dec. 31, 2011	167.5	473.6	301.1	(36.8)	(578.5)	8.1
Increase (Decrease) in Stockholders' Equity
Net income (loss)	61.3		60.9			0.4
Stock plan activity	14.3	6.2		8.1
Other comprehensive income	16.3				16.2	0.1
Balance at Mar. 31, 2012	$ 259.4	$ 479.8	$ 362.0	$ (28.7)	$ (562.3)	$ 8.6