Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

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The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

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The amount of the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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Weighted average interest rate of debt outstanding.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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Interest Payment Grace Period

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Debt (Schedule of debt instruments) (Details) (USD $) Share data in Millions, unless otherwise specified	0 Months Ended	3 Months Ended		0 Months Ended
	Mar. 06, 2015	Mar. 31, 2015	Mar. 31, 2014	Apr. 15, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Total debt		$ 3,015,274,000us-gaap_DebtAndCapitalLeaseObligations			$ 3,081,205,000us-gaap_DebtAndCapitalLeaseObligations
Debt discount, net		(17,207,000)			(18,293,000)
Debt issuance costs		(51,209,000)us-gaap_UnamortizedDebtIssuanceExpense			(54,765,000)us-gaap_UnamortizedDebtIssuanceExpense
Less: current debt		(3,015,274,000)us-gaap_DebtCurrent			(12,327,000)us-gaap_DebtCurrent
Total long-term debt		0			3,068,878,000
Common stock issued in exchange of debt instrument (in shares)	8.65
Gain (loss) on extinguishment of debt		58,626,000	(13,889,000)
2011 term loan B
Debt Instrument [Line Items]
Total debt		978,178,000			978,178,000
Debt discount, net		(11,100,000)			(11,900,000)
Debt issuance costs		(13,700,000)			(14,700,000)
Weighted Average Interest Rate (as a percent)		7.25%
9.50% senior secured notes
Debt Instrument [Line Items]
Total debt		970,000,000			970,000,000
Debt discount, net		(2,600,000)			(2,700,000)
Debt issuance costs		(17,100,000)			(17,800,000)
Weighted Average Interest Rate (as a percent)		9.50%
11.00% / 12.00% senior secured PIK toggle notes
Debt Instrument [Line Items]
Total debt		350,000,000			350,000,000
Debt issuance costs		(7,100,000)			(7,400,000)
11.00% / 12.00% senior secured PIK toggle notes \| Minimum
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)		11.00%
11.00% / 12.00% senior secured PIK toggle notes \| Maximum
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)		12.00%
9.875% senior notes
Debt Instrument [Line Items]
Total debt		388,000,000			388,000,000
Debt discount, net		(2,100,000)			(2,200,000)
Debt issuance costs		(6,900,000)			(7,100,000)
Weighted Average Interest Rate (as a percent)		9.88%
8.50% senior notes
Debt Instrument [Line Items]
Total debt		383,275,000			450,000,000
Debt issuance costs		(6,200,000)			(7,500,000)
Weighted Average Interest Rate (as a percent)		8.50%
Aggregate principal amount of debt exchanged	66,700,000
Gain (loss) on extinguishment of debt		58,600,000
Other
Debt Instrument [Line Items]
Total debt		$ 14,237,000			$ 18,085,000
Subsequent Event \| 9.50% senior secured notes
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)				9.50%
Subsequent Event \| 8.50% senior notes
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)				8.50%
Subsequent Event \| 8.50% and 9.50% Senior Notes
Debt Instrument [Line Items]
Interest Payment Grace Period (in days)				30 days