Consolidated Statements of Stockholders' Equity (USD $) In Millions, except Share data	Total	Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Comprehensive Loss	Redeemable Non-Controlling Interest
Balance, Beginning, Shares at Dec. 31, 2010		144,800,000	12,900,000
Balance, Beginning 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 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
Exercise of stock warrants		5.0
Exercise of stock warrants, shares		5,000,000
Exercise of stock warrants	0			(5.0)
Redemption of redeemable non-controlling interest	24.0
Tax cost of employee stock plan transactions	(0.6)			(0.6)
Redemption of redeemable non-controlling interest	0.4			(5.2)		5.6	(24.0)
Other comprehensive loss	(42.2)					(42.2)	1.0
Balance, Ending, Shares at Dec. 31, 2011		149,800,000	12,700,000
Balance, Ending 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 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, shares		600,000
Exercise of stock warrants	0			(0.6)
Redemption of redeemable non-controlling interest	0
Tax cost of employee stock plan transactions	(3.7)
Other comprehensive loss	(1.7)					(1.7)	0
Balance, Ending, Shares at Dec. 31, 2012		150,400,000	11,900,000
Balance, Ending at Dec. 31, 2012	1,033.8	150.4	(252.9)	533.6	710.6	(107.9)	0
Net income (loss)	177.1						0
Issuance for employee stock plans and stock-based compensation	(12.0)		20.7	(32.7)
Issuance of shares for employee stock plans and stock-based compensation			(1,000,000)
Amortization of restricted stock grants	8.4			8.4
Issuance of shares for public offering	1,621,362
Exercise of stock warrants		1.6
Exercise of stock warrants, shares		1,600,000
Exercise of stock warrants	0			(1.6)
Issuance of shares for employee stock plans and stock-based compensation	0.3			0.3
Redemption of redeemable non-controlling interest	0
Tax cost of employee stock plan transactions	(13.2)
Other comprehensive loss	18.7					18.7	0
Balance, Ending, Shares at Dec. 31, 2013		152,000,000	10,900,000
Balance, Ending at Dec. 31, 2013	$ 1,226.3	$ 152.0	$ (232.2)	$ 508.0	$ 887.7	$ (89.2)	$ 0