Debt (Narrative) (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	1 Months Ended	9 Months Ended
	Nov. 30, 2009	Sep. 30, 2014	Nov. 10, 2009
Convertible subordinated notes—4 percent
Debt Instrument
Hedge transactions cost	$ 26,000,000
Hedge transactions cost decrease in APIC	(17,000,000)
Convertible note hedge transactions shares (in shares)		3.0
Effective conversion price (in dollars per share)		$ 15.56
Percentage premium over price at issuance		75.00%
Closing price at issuance (in dollars per share)			$ 8.89
Market price per share (in dollars per share)		$ 110
ABL Facility
Debt Instrument
Maximum revolving credit amount percentage		10.00%
Debt terms reference amount to maximum revolving credit		150,000,000
Convertible senior notes | Convertible subordinated notes—4 percent
Debt Instrument
Face amount	$ 173,000,000	$ 34,000,000
Stated interest rate		4.00%
Common stock | Convertible subordinated notes—4 percent
Debt Instrument
Convertible equity shares (in shares)		2.6