Long-Term and Other Debt - Narrative (Details) (USD $)	3 Months Ended		6 Months Ended			0 Months Ended		0 Months Ended			0 Months Ended				0 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Oct. 18, 2013 Senior Secured Credit Facilities	Oct. 18, 2013 Revolver, varying interest rate, due 2018	Oct. 18, 2013 Term Loan Facility Senior Secured Term Loan Credit Facility, due 2020	Jun. 04, 2014 2021 Notes	Jun. 30, 2014 2021 Notes	Jun. 04, 2014 2021 Notes	Jun. 04, 2014 2019 Notes	Jun. 04, 2014 2019 Notes	Jun. 04, 2014 2019 Notes Senior Subordinated Notes	Oct. 18, 2013 Letter of Credit Revolver, varying interest rate, due 2018	Jun. 04, 2014 At Any Time Prior to May 15, 2017 2021 Notes	Jun. 04, 2014 To the Date of Redemption 2021 Notes	Jun. 04, 2014 Upon the Occurrence of a Change of Control 2021 Notes	Jun. 04, 2014 Following an Asset Sale 2021 Notes
Debt Instrument
Amortization of financing costs								$ 7,300,000
Debt instrument, redemption price											104.625%				100.00%	106.625%	101.00%	100.00%
Interest rate, increase period								90 days
Interest rate, increase, first 90 days									0.0025
Interest rate, increase, subsequent 90 days									0.0025
Interest rate, increase, max rate									0.01
Debt instrument, redemption amount											140,600,000
Debt instrument, total consideration for each principal amount												1,051.25
Outstanding debt													209,400,000
Loss on early extinguishment of debt	25,900,000	0	25,900,000	0							25,900,000
Debt instrument, redemption price percentage								35.00%
Line of credit facility, maximum borrowing capacity					2,600,000,000.0	300,000,000.0	2,300,000,000.0							200,000,000.0
Commitment fee percentage						0.50%
Step-down percentage						0.375%
Debt Instrument, Face Amount										350,000,000.0
Capital lease asset			$ 42,800,000
Debt instrument, price, percentage of principal								99.321%