Consolidated Statements of Equity (Deficit) (USD $) In Millions, unless otherwise specified	Total	Common Stock and Paid-in Capital	Retained Earnings (Accumulated Deficit)	Treasury Stock	Accumulated Other Comprehensive Loss	Noncontrolling Interests
Balance at Dec. 31, 2010	$ (55.7)	$ 456.6	$ (500.0)	$ (45.9)	$ 26.7	$ 6.9
Increase (Decrease) in Stockholders' Equity Roll Forward
Net income (loss)	219.1	0	219.7	0	0	(0.6)
Stock plan activity	14.0	14.0	0	0	0	0
Stock Issued During Period, Value, Stock Options Exercised	12.1	3.0	0	9.1	0	0
Other Comprehensive Income (Loss), Net of Tax	(5.4)	0	0	0	(7.2)	1.8
Balance at Dec. 31, 2011	184.1	473.6	(280.3)	(36.8)	19.5	8.1
Increase (Decrease) in Stockholders' Equity Roll Forward
Net income (loss)	41.0	0	40.0	0	0	1.0
Stock plan activity	14.7	14.7	0	0	0	0
Stock Issued During Period, Value, Stock Options Exercised	32.2	12.2	0	20.0	0	0
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation	36.8	36.8	0	0	0	0
Other Comprehensive Income (Loss), Net of Tax	11.0	0	0	0	10.2	0.8
Balance at Dec. 31, 2012	319.8	537.3	(240.3)	(16.8)	29.7	9.9
Increase (Decrease) in Stockholders' Equity Roll Forward
Net income (loss)	257.7	0	256.1	0	0	1.6
Stock plan activity	13.4	13.4	0	0	0	0
Stock Issued	1.3	1.3	0	0	0	0
Stock Issued During Period, Value, Stock Options Exercised	34.4	17.6		16.8
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation	(35.4)	(35.4)	0	0	0	0
Other Comprehensive Income (Loss), Net of Tax	(20.0)	0	0	0	(19.1)	(0.9)
Balance at Dec. 31, 2013	$ 571.2	$ 534.2	$ 15.8	$ 0	$ 10.6	$ 10.6