Long-Term and Other Debt Schedule of Long-term Debt Instruments (Details) - USD ($)		Jun. 30, 2015	Dec. 31, 2014
Debt Instrument
Total long-term debt outstanding		$ 8,482,600,000	$ 8,516,000,000
Less: debt payments due within one year		(50,600,000)	(50,600,000)
Long-term debt, net of debt payments due within one year		8,432,000,000	8,465,400,000
Revolver, varying interest rate, due 2018
Debt Instrument
Total long-term debt outstanding		175,000,000	185,000,000
Senior secured term loan credit facility, due 2020
Debt Instrument
Total long-term debt outstanding	[1]	2,256,900,000	2,267,600,000
Long-term debt, gross		2,265,500,000	2,277,000,000
Loan discount amortization		8,600,000	9,400,000
Senior secured term loan credit facility due 2021
Debt Instrument
Total long-term debt outstanding	[2]	1,971,800,000	1,980,300,000
Long-term debt, gross		1,990,000,000	2,000,000,000
Loan discount amortization		18,200,000	0
2018 Notes
Debt Instrument
Total long-term debt outstanding		250,000,000	250,000,000
2020 Notes
Debt Instrument
Total long-term debt outstanding		300,000,000	300,000,000
2021 Notes
Debt Instrument
Total long-term debt outstanding	[3]	348,000,000	347,800,000
Long-term debt, gross		350,000,000	350,000,000
Loan discount amortization		2,000,000	2.2
Secured Notes
Debt Instrument
Total long-term debt outstanding		950,000,000	950,000,000
Unsecured Notes
Debt Instrument
Total long-term debt outstanding		2,200,000,000	2,200,000,000
Capital lease obligations, 3.9% interest as of June 30, 2015 payable monthly through 2019
Debt Instrument
Total long-term debt outstanding		$ 30,900,000	$ 35,300,000
Capital lease interest rate		3.90%	3.90%

[1] Total of $2,265.5 million in principal amount less unamortized loan discount in the amount of $8.6 million as of June 30, 2015. Total of $2,277.0 million in principal amount less unamortized loan discount in the amount of $9.4 million as of December 31, 2014.

[2] Total of $1,990.0 million in principal amount less unamortized loan discount in the amount of $18.2 million as of June 30, 2015. Total of $2,000.0 million in principal amount less unamortized loan discount in the amount of $19.7 million as of December 31, 2014.

[3] Total of $350.0 million in principal amount less unamortized loan discount in the amount of $2.0 million as of June 30, 2015. Total of $350.0 million in principal amount less unamortized loan discount in the amount of $2.2 million as of December 31, 2014.