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Debt - Narrative (Details)		3 Months Ended				6 Months Ended
Debt - Narrative (Details)	Mar. 03, 2016 USD ($)	Jun. 30, 2016 USD ($) derivative	Mar. 31, 2016 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Jun. 30, 2016 USD ($) facility derivative	Jun. 30, 2015 USD ($)	Feb. 18, 2016 USD ($)	Dec. 31, 2015 USD ($)	Jan. 03, 2014 USD ($)
Debt Instrument [Line Items]
Loss on debt extinguishment		$ 0	$ (76,300,000)	$ 0	$ 0	$ 76,300,000	$ 0
Carrying amount		292,200,000				292,200,000			$ 1,397,600,000
Term loan A
Debt Instrument [Line Items]
Carrying amount		$ 0				$ 0			312,800,000
Term loan A \| Cash Flow Hedging
Debt Instrument [Line Items]
Notional amount									$ 175,000,000
Hedged interest rate (as a percent)		1.635%				1.635%			1.635%
Term loan A \| Cash Flow Hedging \| Interest rate swap contracts
Debt Instrument [Line Items]
Terminated derivatives						$ 4,300,000
Term loan B
Debt Instrument [Line Items]
Carrying amount		$ 0				0			$ 119,500,000
Senior notes 8.50% due 2020
Debt Instrument [Line Items]
Interest rate, stated percentage (as a percent)	8.50%
Redemption price (as a percent)	104.25%
Redemption premium	$ 625,500,000.0
Carrying amount		0				0			613,100,000
Senior notes 5.875% due 2022
Debt Instrument [Line Items]
Interest rate, stated percentage (as a percent)	5.875%
Redemption price (as a percent)	110.167%
Redemption premium	$ 330,500,000.0
Carrying amount		$ 0				$ 0			299,200,000
Senior Notes, Due 2020
Debt Instrument [Line Items]
Write off of deferred financing expense			6,900,000
Loss on debt extinguishment			31,500,000
Debt redemption premium			24,600,000
Derivative, notional amount	11,800,000
Senior Notes Due 2021
Debt Instrument [Line Items]
Face amount of debt								$ 260
Interest rate, stated percentage (as a percent)								12.75%
Minimum principal ownership to call debt (as a percent) (at least)						25.00%
Redemption price (as a percent)						100.00%
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%				35.00%
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%				65.00%
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%
Senior Notes Due 2021 \| Guarantor Subsidiaries
Debt Instrument [Line Items]
Ownership of subsidiaries (as a percent)		100.00%				100.00%
Senior Notes, Due 2022
Debt Instrument [Line Items]
Write off of deferred financing expense			3,400,000
Loss on debt extinguishment			34,600,000
Debt redemption premium			$ 31,200,000
Derivative, notional amount	700,000
Other
Debt Instrument [Line Items]
Carrying amount		$ 48,500,000				$ 48,500,000			$ 66,300,000
Weighted average interest rate (as a percent)		5.26%				5.26%
Senior Notes \| Interest rate swap contracts
Debt Instrument [Line Items]
Number of interest rate swaps outstanding \| derivative		0				0
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
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
Letter of Credit \| Wells Fargo Bank \| Line of Credit \| Asset Based Revolving Credit Facility \| Subsidiary
Debt Instrument [Line Items]
Maximum borrowing capacity under revolving credit facility	$ 10,000,000
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 \| Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity under revolving credit facility										500,000,000
Debt term						5 years
Write off of deferred financing expense						$ 5,900,000.0
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 \| Term loan B
Debt Instrument [Line Items]
Debt term						7 years
Face amount of debt										$ 200,000,000
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]
Maximum borrowing capacity under revolving credit facility		$ 197,700,000.0				$ 197,700,000.0
Borrowings on facility		0				0
Excess capacity		173,400,000				173,400,000
Prior Senior Credit Facility \| Letter of Credit
Debt Instrument [Line Items]
Borrowings on facility		$ (24,300,000)				$ (24,300,000)