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Debt (Convertible Notes) (Details) (USD $)
Share data in Millions, except Per Share data, unless otherwise specified |
12 Months Ended | 3 Months Ended | 12 Months Ended | 12 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2011
|
Dec. 31, 2010
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Dec. 31, 2009
|
Sep. 30, 2010
Convertible Notes Exchange Offer [Member]
|
Dec. 31, 2011
Convertible Notes Exchange Offer [Member]
|
Dec. 31, 2010
Convertible Notes Exchange Offer [Member]
|
Jun. 30, 2011
Convertible Notes Exchange Offer [Member]
|
Mar. 31, 2011
Convertible Notes Exchange Offer [Member]
|
Dec. 31, 2011
Convertible Notes [Member]
|
Dec. 31, 2010
Convertible Notes [Member]
|
Dec. 31, 2009
Convertible Notes [Member]
|
|
| Principal amount of note | $ 324,700,000 | $ 200,000 | $ 20,000,000 | $ 345,000,000 | |||||||
| Debt Instrument, Convertible, Effective Interest Rate | 10.80% | ||||||||||
| Debt Instrument, Interest Rate, Stated Percentage | 5.50% | ||||||||||
| Debt Instrument, Convertible, Conversion Ratio | 116.198 | 116.198 | |||||||||
| Medium Term Notes, Redemption, Min Principal Amount Subject To Redemption | 0 | ||||||||||
| Debt Instrument, Convertible, Conversion Price | $ 8.61 | $ 8.61 | |||||||||
| Discount on convertible notes, net of issuance costs and tax | 41,000,000 | 69,000,000 | |||||||||
| Convertible Debt Exchange Cash Paid | 52,000,000 | 3,100,000 | 52,000,000 | ||||||||
| Shares Issued For Exchange Of Convertible Notes, Number of Shares | 2.3 | 37.7 | |||||||||
| Fair market value of common stock at settlement | 47,400,000 | ||||||||||
| Excess of the fair value of the liability component over carrying value | 356,000,000 | 21,800,000 | |||||||||
| Carrying Value of Convertible Notes Exchanged | 324,700,000 | 275,500,000 | 17,300,000 | ||||||||
| Loss related to extinguishment of debt | 4,800,000 | 218,600,000 | 4,700,000 | (4,800,000) | (87,200,000) | ||||||
| Value of shares issued, increase in stockholders' equity | 44,300,000 | ||||||||||
| Equity component of convertible notes, reduction in stockholders' equity | (25,800,000) | (334,400,000) | 25,600,000 | ||||||||
| Convertible notes outstanding | $ 100,000 | $ 17,500,000 | |||||||||