Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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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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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Weighted average interest rate of debt outstanding.

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Nominal or face amount used to calculate payments on the derivative liability.

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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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Average amount borrowed under the credit facility during the period.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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Debt - Narrative (Details)		3 Months Ended		12 Months Ended
Debt - Narrative (Details)	Mar. 03, 2016 USD ($)	Mar. 31, 2016 USD ($) facility	Mar. 31, 2015 USD ($)	Dec. 31, 2015 USD ($)	Feb. 18, 2016 USD ($)	Jan. 03, 2014 USD ($)
Debt Instrument [Line Items]
Maximum percentage of the principal amount of the debt instrument which the entity may redeem with proceeds from qualified equity offerings (as a percent) (up to)		35.00%
Loss on early debt extinguishment		$ 72,000,000	$ 0
Carrying amount		303,000,000		$ 1,393,800,000
Senior notes 8.50% due 2020
Debt Instrument [Line Items]
Interest rate, stated percentage (as a percent)	8.50%
Redemption premium	$ 625,500,000.0
Redemption price (as a percent)	104.25%
Carrying amount		$ 0		613,100,000
Senior notes 5.875% due 2022
Debt Instrument [Line Items]
Maximum redemption period for the entity to redeem the debt instrument following the receipt of proceeds from qualified equity offerings (in number of days)		90 days
Redemption price, required repurchases		101.00%
Interest rate, stated percentage (as a percent)	5.875%
Redemption premium	$ 330,500,000.0
Redemption price (as a percent)	110.167%
Carrying amount		$ 0		299,200,000
Senior Notes, Due 2020
Debt Instrument [Line Items]
Write off of issuance cost		6,900,000
Loss on early debt extinguishment		31,500,000
Debt redemption premium		24,600,000
Derivative, notional amount	$ 11,800,000
Term loan A
Debt Instrument [Line Items]
Carrying amount		$ 0		312,800,000
Senior Notes Due 2021
Debt Instrument [Line Items]
Face amount of debt					$ 260
Senior notes 12.750% Due 2021
Debt Instrument [Line Items]
Redemption price of debt instrument if redeemed with proceeds from qualified equity offerings (as a percent)		112.75%
Minimum percentage of the principal amount of the debt instrument which must remain outstanding after the entity has redeemed a portion of the debt instrument with proceeds from qualified equity offerings (as a percent) (at least)		65.00%
Interest rate, stated percentage (as a percent)		12.75%			12.75%
Carrying amount		$ 248,100,000		0
Senior Notes, Due 2022
Debt Instrument [Line Items]
Write off of issuance cost		3,400,000
Loss on early debt extinguishment		34,600,000
Debt redemption premium		31,200,000
Derivative, notional amount	700,000
Other
Debt Instrument [Line Items]
Carrying amount		$ 63,200,000		66,300,000
Weighted average interest rate (as a percent)		5.24%
Term loan B
Debt Instrument [Line Items]
Carrying amount		$ 0		119,500,000
New Senior Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity under revolving credit facility						$ 1,050,000,000
Number of loan facilities included with the senior credit facility \| facility		3
New Senior Credit Facility \| Term loan A
Debt Instrument [Line Items]
Debt term		5 years
Face amount of debt						350,000,000
New Senior Credit Facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity under revolving credit facility						500,000,000
Debt term		5 years
Write off of issuance cost		$ 5,900,000.0
New Senior Credit Facility \| Term loan B
Debt Instrument [Line Items]
Debt term		7 years
Face amount of debt						$ 200,000,000
Letter of Credit \| Wells Fargo Bank \| Line of Credit \| Asset Based Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity under revolving credit facility	75,000,000
Revolving Credit Facility \| Wells Fargo Bank \| Line of Credit
Debt Instrument [Line Items]
Fixed charge coverage ratio		1.00
Revolving Credit Facility \| Wells Fargo Bank \| Line of Credit \| Asset Based Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity under revolving credit facility	$ 225,000,000
Debt term	5 years
Prior Senior Credit Facility \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate		1.50%
Prior Senior Credit Facility \| Prime Rate
Debt Instrument [Line Items]
Basis spread on variable rate		0.50%
Prior Senior Credit Facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Weighted average interest rate (as a percent)		3.54%
Highest daily borrowing				234,000,000
Average outstanding amount		$ 117,400,000
Excess capacity		$ 160,100,000.0
Cash Flow Hedging \| Term loan A
Debt Instrument [Line Items]
Units hedged				$ 175,000,000
Hedged interest rate		1.635%		1.635%
Subsidiary \| Letter of Credit \| Wells Fargo Bank \| Line of Credit \| Asset Based Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity under revolving credit facility	$ 10,000,000