Long-Term and Other Debt - Schedule of Outstanding Debt (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Debt Instrument
Principal	$ 8,376.1	$ 8,404.7
Unamortized debt discount	(25.1)	(26.3)
Unamortized deferred financing costs	(163.9)	(171.4)
Total long-term debt outstanding	8,187.1	8,207.0
Less: current portion of long-term debt	(50.0)	(50.3)
Long-term debt, excluding current portion	$ 8,137.1	$ 8,156.7
Capital lease obligations
Debt Instrument
Capital lease interest rate	3.90%	3.90%
Term Loan, varying interest rate, due 2020 \| Term loan facility
Debt Instrument
Principal	$ 2,248.3	$ 2,254.0
Unamortized debt discount	(7.4)	(7.8)
Unamortized deferred financing costs	(49.9)	(52.5)
Total long-term debt outstanding	2,191.0	2,193.7
Term Loan, varying interest rate, due 2021 \| Term loan facility
Debt Instrument
Principal	1,975.0	1,980.0
Unamortized debt discount	(15.9)	(16.7)
Unamortized deferred financing costs	(47.0)	(49.2)
Total long-term debt outstanding	1,912.1	1,914.1
2018 Notes \| Senior subordinated notes
Debt Instrument
Principal	250.0	250.0
Unamortized debt discount	0.0	0.0
Unamortized deferred financing costs	(1.9)	(2.0)
Total long-term debt outstanding	248.1	248.0
2020 Notes \| Senior subordinated notes
Debt Instrument
Principal	300.0	300.0
Unamortized debt discount	0.0	0.0
Unamortized deferred financing costs	(3.4)	(3.6)
Total long-term debt outstanding	296.6	296.4
2021 Notes \| Senior subordinated notes
Debt Instrument
Principal	350.0	350.0
Unamortized debt discount	(1.8)	(1.8)
Unamortized deferred financing costs	(5.4)	(5.6)
Total long-term debt outstanding	342.8	342.6
Secured Notes \| Senior subordinated notes
Debt Instrument
Principal	950.0	950.0
Unamortized debt discount	0.0	0.0
Unamortized deferred financing costs	(15.7)	(16.4)
Total long-term debt outstanding	934.3	933.6
Unsecured Notes \| Senior subordinated notes
Debt Instrument
Principal	2,200.0	2,200.0
Unamortized debt discount	0.0	0.0
Unamortized deferred financing costs	(40.6)	(42.1)
Total long-term debt outstanding	2,159.4	2,157.9
Capital lease obligations, payable monthly \| Capital lease obligations
Debt Instrument
Principal	22.8	25.7
Unamortized debt discount	0.0	0.0
Unamortized deferred financing costs	0.0	0.0
Total long-term debt outstanding	22.8	25.7
Revolving credit facility \| Revolver, varying interest rate, due 2018
Debt Instrument
Principal	80.0	95.0
Unamortized debt discount	0.0	0.0
Unamortized deferred financing costs	0.0	0.0
Total long-term debt outstanding	$ 80.0	$ 95.0

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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