Consolidated Statements of Stockholders' Equity (USD $) In Millions, except Share data	Total	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Comprehensive Loss [Member]	Redeemable Non-Controlling Interest [Member]
Balance, Beginning Value, Shares at Dec. 31, 2009		139,700,000	13,100,000
Balance, Beginning Value at Dec. 31, 2009	$ 1,253.5	$ 139.7	$ (286.1)	$ 562.4	$ 902.1	$ (64.6)	$ 21.1
Net income (loss)	(39.0)				(39.0)		0.4
Issuance of shares for employee stock plans and stock-based compensation	7.0		6.2	0.8
Issuance of shares for employee stock plans and stock-based compensation			(200,000)
Amortization of restricted stock grants	1.7			1.7
Exercise of stock warrants		5.1
Exercise of stock warrants		5,100,000
Warrants exercised, Adjustments to Additional Paid in Capital	0			(5.1)
Tax cost of employee stock plan transactions	(0.4)			(0.4)
Other comprehensive loss	(5.0)					(5.0)	1.3
Balance, Ending Value, Shares at Dec. 31, 2010		144,800,000	12,900,000
Balance, Ending Value at Dec. 31, 2010	1,217.8	144.8	(279.9)	559.4	863.1	(69.6)	22.8
Net income (loss)	(181.3)				(181.3)		0.2
Issuance of shares for employee stock plans and stock-based compensation	5.5		5.5
Issuance of shares for employee stock plans and stock-based compensation			(200,000)
Amortization of restricted stock grants	1.3			1.3
Issuance of shares for public offering	4,981,305
Exercise of stock warrants		5.0
Exercise of stock warrants		5,000,000
Warrants exercised, Adjustments to Additional Paid in Capital	0			(5.0)
Redemption of redeemable non-controlling interest	0.4			(5.2)		5.6	(24.0)
Other Comprehensive Income Loss Before Redemption Of Redeemable Non Controlling Interest Net Of Tax	(42.2)
Tax cost of employee stock plan transactions	(0.6)			(0.6)
Other comprehensive loss	(36.6)					(42.2)	1.0
Balance, Ending Value, Shares at Dec. 31, 2011		149,800,000	12,700,000
Balance, Ending Value at Dec. 31, 2011	1,000.9	149.8	(274.4)	549.9	681.8	(106.2)	0
Net income (loss)	28.8				28.8		0
Issuance of shares for employee stock plans and stock-based compensation	(2.3)		21.5	(23.8)
Issuance of shares for employee stock plans and stock-based compensation			(800,000)
Amortization of restricted stock grants	8.1			8.1
Issuance of shares for public offering	605,798
Exercise of stock warrants		0.6
Exercise of stock warrants		600,000
Warrants exercised, Adjustments to Additional Paid in Capital	0			(0.6)
Tax cost of employee stock plan transactions	(3.7)
Other comprehensive loss	(1.7)					(1.7)	0
Balance, Ending Value, Shares at Dec. 31, 2012		150,400,000	11,900,000
Balance, Ending Value at Dec. 31, 2012	$ 1,033.8	$ 150.4	$ (252.9)	$ 533.6	$ 710.6	$ (107.9)	$ 0