Debt (Details) (USD $)			0 Months Ended	3 Months Ended					3 Months Ended												3 Months Ended		3 Months Ended						3 Months Ended			3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 18, 2014 2011 Credit Agreement	Mar. 31, 2014 2011 term loan A	Dec. 31, 2013 2011 term loan A	Mar. 31, 2014 2011 term loan B	Mar. 18, 2014 2011 term loan B	Dec. 31, 2013 2011 term loan B	Mar. 31, 2014 Revolving Credit Facility	Mar. 18, 2014 Revolving Credit Facility	Mar. 31, 2014 9.875% senior notes	Dec. 31, 2013 9.875% senior notes	Mar. 31, 2014 8.50% senior notes	Dec. 31, 2013 8.50% senior notes	Mar. 27, 2014 First Lien Notes	Mar. 31, 2014 9.50% senior secured notes due 2019	Dec. 31, 2013 9.50% senior secured notes due 2019	Sep. 27, 2013 9.50% senior secured notes due 2019	Mar. 31, 2014 9.50% add-on senior secured notes due 2019	Mar. 27, 2014 9.50% add-on senior secured notes due 2019	Mar. 31, 2014 11.0% / 12.0% senior secured PIK toggle notes	Mar. 27, 2014 11.0% / 12.0% senior secured PIK toggle notes	Mar. 31, 2014 11.0% / 12.0% senior secured PIK toggle notes Prior to April 1, 2017	Mar. 31, 2014 11.0% / 12.0% senior secured PIK toggle notes Year commencing April 1, 2017	Mar. 31, 2014 11.0% / 12.0% senior secured PIK toggle notes Year commencing April 1, 2018	Mar. 31, 2014 11.0% / 12.0% senior secured PIK toggle notes Beginning on April 1, 2019	Mar. 31, 2014 11.0% / 12.0% senior secured PIK toggle notes Minimum	Mar. 31, 2014 11.0% / 12.0% senior secured PIK toggle notes Maximum	Mar. 31, 2014 11.0% / 12.0% senior secured PIK toggle notes Maximum Prior to April 1, 2017	Mar. 31, 2014 Other	Dec. 31, 2013 Other	Mar. 31, 2014 2016 Revolver	Mar. 31, 2014 2017 Revolver
Debt instrument
Debt discount, net	$ (24,797,000)	$ (20,788,000)		$ (5,514,000)		$ (14,270,000)		$ (9,597,000)	$ (8,010,000)		$ (3,090,000)	$ (3,169,000)				$ (2,427,000)	$ (2,508,000)
Total debt	2,933,445,000	2,778,832,000			406,566,000	978,178,000		978,178,000			500,000,000	500,000,000	450,000,000	450,000,000		450,000,000	450,000,000		200,000,000		350,000,000									30,064,000	14,876,000
Less current debt	(15,379,000)	(9,210,000)
Total long term debt	2,918,066,000	2,769,622,000
Weighted average stated interest rate (as a percent)						7.05%					9.88%		8.50%			9.50%			9.50%		11.00%
Interest rate (as a percent)											9.875%		8.50%			9.50%			9.50%								11.00%	12.00%
Debt agreements
Debt instrument, description of variable rate basis									LIBOR or CDOR
Basis spread on variable rate (as a percent)									5.50%
Percentage of revolving commitments which have extended maturity			81.60%
Reduction in percentage of revolving commitments for extending lenders			20.00%
Increase in the interest rate payable (as a percent)							0.50%
Minimum percentage of debt outstanding under the Revolver for the senior secured leverage ratio covenant to be applicable										30.00%
Minimum amount of debt outstanding under the Revolver for the senior secured leverage ratio covenant to be applicable										94,100,000
Commitment fee on the unused portion (as a percent)																																0.50%	0.625%
Availability for borrowings									270,900,000																							61,100,000	209,800,000
Maximum borrowing capacity										313,800,000																						69,000,000	244,800,000
Outstanding letters of credit																																7,900,000	35,000,000
Aggregate principal amount															650,000,000			450,000,000		200,000,000		350,000,000
Cash interest rate (as a percent)																					11.00%
Percentage of cash interest payable under option one																					50.00%
Percentage of PIK interest payable under option one																					50.00%
Percentage of cash interest payable under option two																					75.00%
Percentage of PIK interest payable under option two																					25.00%
PIK Interest rate (as a percent)																					12.00%
Aggregate principal amount that may be redeemed with net cash proceeds of certain equity offerings (as a percent)																													35.00%
Redemption price of debt instrument, with net cash proceeds from certain equity offerings (as a percent)																							111.00%
Redemption price of debt instrument (as a percent)																							100.00%	105.50%	102.75%	100.00%
Premium (as a percent)																							1.625%
Redemption price of debt instrument, upon occurrence of a change in control (as a percent)																					101.00%
Unamortized debt issuance costs expensed				6,700,000
Unamortized debt discount expensed				7,200,000
Debt repayment schedule, excluding interest
2014	11,703,000																													11,703,000
2015	12,599,000																													12,599,000
2016	5,762,000																													5,762,000
2018	978,178,000					978,178,000
Thereafter	$ 1,950,000,000										$ 500,000,000		$ 450,000,000			$ 450,000,000			$ 200,000,000		$ 350,000,000