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Long-Term Debt (Details) (USD $)
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6 Months Ended | 0 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
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Jun. 30, 2011
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Sep. 16, 2005
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Dec. 14, 2010
Previous Maximum [Member]
10.75% Notes Due 2016 [Member]
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Dec. 14, 2010
Current Maximum [Member]
10.75% Notes Due 2016 [Member]
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Jun. 10, 2011
5.95% Senior Unsecured Notes Due June 15, 2041 [Member]
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Dec. 08, 2010
6.25% Senior Unsecured Notes Due December 15, 2040 [Member]
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Dec. 14, 2010
10.75% Notes Due 2016 [Member]
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Dec. 01, 2010
10.75% Notes Due 2016 [Member]
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Dec. 30, 2010
6.80% Notes Due 2019 [Member]
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Dec. 01, 2010
6.80% Notes Due 2019 [Member]
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Nov. 15, 2010
7.875% Unsecured Notes [Member]
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| Debt instrument, face amount | $ 725,000,000 | $ 1,000,000,000 | $ 250,000,000 | $ 325,000,000 | $ 400,000,000 | $ 250,000,000 | |||||
| Cash tender offer | 250,000,000 | 250,000,000 | |||||||||
| Debt instrument interest rate stated percentage | 5.95% | 6.25% | 10.75% | 6.80% | 7.875% | ||||||
| Extinguishment of debt, amount | 681,800,000 | ||||||||||
| Notes tendered | 272,900,000 | 273,100,000 | |||||||||
| Loss on early extinguishment of long-term debt | $ (96,700,000) | ||||||||||