Debt Maturities of Long-term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	[1]
Debt Disclosure [Abstract]
2017	$ 27,841
2018	34,591
2019	23,792
2020	2,272,074
2021	0
Thereafter	1,100,000
Long-term Debt, Gross	3,458,298
Debt Instrument, Unamortized Discount	(46,747)
Total Debt	$ 3,411,551	$ 3,429,351

[1] (1) December 31, 2015 balances have been reclassified to present debt issuance costs as a direct deduction from the carrying amount of an associated debt liability in accordance with ASU 2015-03. See Note 1 for further information.