Debt (Tables)

3 Months Ended

Mar. 31, 2018

Debt [Abstract]

Schedule of Carrying and Principal Values of Debt

		As of						As of
		March 31, 2018						December 31, 2017
	Maturity Date	Principal Balance		Fair Value		Carrying Value		Principal Balance		Fair Value		Carrying Value
2014 Senior Notes	Jul. 15, 2022	$	750,000	$	753,750	$	739,617	$	750,000	$	770,625	$	739,079
2016 Senior Notes	Sep. 1, 2024		1,100,000		1,075,250		1,081,857		1,100,000		1,127,500		1,081,262
2017 Senior Notes	Oct. 1, 2022		750,000		718,125		741,846		750,000		750,938		741,437
2013-1C Tower Securities	Apr. 10, 2018		—		—		—		425,000		423,853		424,482
2013-2C Tower Securities	Apr. 11, 2023		575,000		568,071		568,881		575,000		578,433		568,609
2013-1D Tower Securities	Ap. 10, 2018		—		—		—		330,000		330,145		329,585
2014-1C Tower Securities	Oct. 8, 2019		920,000		910,395		915,621		920,000		915,216		914,929
2014-2C Tower Securities	Oct. 8, 2024		620,000		607,067		613,672		620,000		620,942		613,461
2015-1C Tower Securities	Oct. 8, 2020		500,000		492,260		494,028		500,000		496,840		493,474
2016-1C Tower Securities	Jul. 9, 2021		700,000		691,726		693,578		700,000		691,166		693,118
2017-1C Tower Securities	Apr. 11, 2022		760,000		740,992		751,548		760,000		751,404		751,076
2018-1C Tower Securities	Mar. 9, 2023		640,000		638,650		631,939		—		—		—
Revolving Credit Facility	Feb. 5, 2020		235,000		235,000		235,000		40,000		40,000		40,000
2014 Term Loan	Mar. 24, 2021		1,443,750		1,447,359		1,436,207		1,447,500		1,451,119		1,439,373
2015 Term Loan	Jun. 10, 2022		486,250		486,250		479,892		487,500		488,109		480,801
Total debt		$	9,480,000	$	9,364,895	$	9,383,686	$	9,405,000	$	9,436,290	$	9,310,686
Less: current maturities of long-term debt							(20,000)						(20,000)
Total long-term debt, net of current maturities						$	9,363,686					$	9,290,686

Schedule of Cash and Non-Cash Interest Expense

	For the three months ended March 31,
	2018				2017
	Cash		Non-cash		Cash		Non-cash
	Interest		Interest		Interest		Interest
	(in thousands)
2014 Senior Notes	$	9,141	$	187	$	9,141	$	178
2016 Senior Notes		13,406		246		13,406		234
2017 Senior Notes		7,500		—		—		—
2012 Tower Securities		—		—		4,524		—
2013 Tower Securities		9,475		—		10,804		—
2014 Tower Securities		12,785		—		12,785		—
2015-1C Tower Securities		3,985		—		3,985		—
2016-1C Tower Securities		5,090		—		5,090		—
2017-1C Tower Securities		6,085		—		—		—
2018-1C Tower Securities		1,362		—		—		—
Revolving Credit Facility		1,601		—		2,770		—
2014 Term Loan		13,947		131		11,284		128
2015 Term Loan		4,697		169		3,800		165
Other		(151)		—		13		—
Total	$	88,923	$	733	$	77,602	$	705