Long-Term and Other Debt - Notes (Details) - USD ($)		3 Months Ended	12 Months Ended
	Jun. 04, 2014	Jun. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Mar. 02, 2017	Nov. 21, 2014
Debt Instrument [Line Items]
Repurchase of notes			$ 39,900,000	$ 0	$ 0
Gain on early extinguishment of debt			$ 25,200,000	$ 0	$ (25,900,000)
Senior Subordinated Notes, maturing 2021
Debt Instrument [Line Items]
Debt repurchased and cancelled		$ 9,400,000
Repurchase of notes		5,700,000
Gain on early extinguishment of debt		25,200,000
Write-off of unamortized debt costs		800,000
Senior Subordinated Notes, maturing 2020
Debt Instrument [Line Items]
Debt repurchased and cancelled		56,500,000
Repurchase of notes		$ 34,200,000
Senior Notes | Subsequent event
Debt Instrument [Line Items]
Debt amount						$ 1,150,000,000.00
Senior Notes | Senior Unsecured Notes, maturing 2022
Debt Instrument [Line Items]
Debt amount							$ 2,200,000,000.0
Redemption price percentage			100.00%
Senior Notes | Senior Secured Notes, maturing 2022
Debt Instrument [Line Items]
Debt amount							$ 950,000,000.0
Redemption price percentage			100.00%
Senior Subordinated Notes | Senior Subordinated Notes, maturing 2021
Debt Instrument [Line Items]
Debt amount	$ 350,000,000.0
Redemption price percentage			100.00%
Debt instrument price percentage of principal amount	99.321%