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Long-Term Debt -Senior Notes (Details) (USD $)
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3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | ||||||||||||||
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Sep. 30, 2014
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Sep. 30, 2013
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Sep. 30, 2014
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Sep. 30, 2013
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Dec. 31, 2013
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Sep. 30, 2014
Senior Notes due 2022 [Member]
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Dec. 31, 2013
Senior Notes due 2022 [Member]
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Aug. 05, 2014
Senior Notes [Member]
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Sep. 30, 2014
Senior notes due 2019 [Member]
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Sep. 30, 2014
Senior notes due 2019 [Member]
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Aug. 05, 2014
Senior notes due 2019 [Member]
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Mar. 20, 2014
Senior notes due 2019 [Member]
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Dec. 31, 2013
Senior notes due 2019 [Member]
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| Debt Instrument [Line Items] | ||||||||||||||||||
| Extinguishment of Debt, Accrued Interest Paid to Lenders | $ 1,000,000 | |||||||||||||||||
| Net loss on extinguishments of long-term debt | (45,800,000) | (41,300,000) | (53,800,000) | (55,500,000) | 22,100,000 | 2,700,000 | ||||||||||||
| Long-term Debt, stated interest rate | 6.00% | 8.50% | 8.50% | |||||||||||||||
| Debt, short-term and long-term | 600,000,000 | 0 | 600,000,000 | 1,045,300,000 | 1,045,300,000 | 1,305,000,000 | ||||||||||||
| Deferred financing costs, net | 31,800,000 | 31,800,000 | 30,100,000 | 8,000,000 | ||||||||||||||
| Long-term Debt, Weighted Average Interest Rate | 6.00% | [1] | 8.50% | [1] | 8.50% | [1] | ||||||||||||
| Premium, unamortized | 2,900,000 | 2,900,000 | 4,200,000 | |||||||||||||||
| Debt Instrument, Repurchased Face Amount | 234,700,000 | 25,000,000 | ||||||||||||||||
| Redemption Premium, percentage of par value | 108.80% | 109.75% | ||||||||||||||||
| Extinguishment of Debt, Fees Paid to Lenders | 10,000,000 | 2,400,000 | ||||||||||||||||
| Extinguishment of Debt, Make-whole Interest Payment | 10,600,000 | |||||||||||||||||
| Write off of Deferred Debt Issuance Cost | 2,200,000 | 300,000 | ||||||||||||||||
| Write off of Deferred Debt issuance Cost, unamortized premium | 700,000 | |||||||||||||||||
| Debt Instrument, Repurchase Amount | $ 234,700,000 | |||||||||||||||||
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