Debt (Tables)

12 Months Ended

Dec. 31, 2018

Debt [Abstract]

Schedule of Principal Values, Fair Values, and Carrying Values of Debt

		As of						As of
		December 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	$	735,000	$	741,273	$	750,000	$	770,625	$	739,079
2016 Senior Notes	Sep. 1, 2024		1,100,000		1,034,000		1,083,689		1,100,000		1,127,500		1,081,262
2017 Senior Notes	Oct. 1, 2022		750,000		712,500		743,099		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		569,164		569,715		575,000		578,433		568,609
2013-1D Tower Securities	Apr. 10, 2018		—		—		—		330,000		330,145		329,585
2014-1C Tower Securities	Oct. 8, 2019		920,000		914,241		917,728		920,000		915,216		914,929
2014-2C Tower Securities	Oct. 8, 2024		620,000		609,665		614,315		620,000		620,942		613,461
2015-1C Tower Securities	Oct. 8, 2020		500,000		496,640		495,737		500,000		496,840		493,474
2016-1C Tower Securities	Jul. 9, 2021		700,000		691,432		694,994		700,000		691,166		693,118
2017-1C Tower Securities	Apr. 11, 2022		760,000		744,496		753,028		760,000		751,404		751,076
2018-1C Tower Securities	Mar. 9, 2023		640,000		641,478		632,725		—		—		—
Revolving Credit Facility	Apr. 11, 2023		325,000		325,000		325,000		40,000		40,000		40,000
2014 Term Loan	Mar. 24, 2021		—		—		—		1,447,500		1,451,119		1,439,373
2015 Term Loan	Jun. 10, 2022		—		—		—		487,500		488,109		480,801
2018 Term Loan	Apr. 11, 2025		2,388,000		2,262,630		2,367,250		—		—		—
Total debt		$	10,028,000	$	9,736,246	$	9,938,553	$	9,405,000	$	9,436,290	$	9,310,686
Less: current maturities of long-term debt							(941,728)						(20,000)
Total long-term debt, net of current maturities						$	8,996,825					$	9,290,686

Schedule of Future Principal Payment Obligations

For the year ended December 31,	(in thousands)
2019	$	944,000
2020		524,000
2021		724,000
2022		2,284,000
2023		1,564,000

Schedule of Cash and Non-Cash Interest Expense

	For the year ended December 31,
	2018				2017				2016
	Cash		Non-cash		Cash		Non-cash		Cash		Non-cash
	Interest		Interest		Interest		Interest		Interest		Interest
	(in thousands)
5.625% Senior Notes		—		—		—		—		21,094		—
5.75% Senior Notes		—		—		—		—		28,494		—
2014 Senior Notes		36,563		761		36,563		724		36,563		689
2016 Senior Notes		53,625		1,003		53,625		954		20,258		348
2017 Senior Notes		30,000		—		6,500		—		—		—
2010-2C Tower Securities		—		—		—		—		15,213		—
2012 Tower Securities		—		—		5,330		—		18,107		—
2013 Tower Securities		25,654		—		43,217		—		43,217		—
2014 Tower Securities		51,138		—		51,138		—		51,138		—
2015-1C Tower Securities		15,939		—		15,939		—		15,939		—
2016-1C Tower Securities		20,361		—		20,361		—		9,898		—
2017-1C Tower Securities		24,354		—		17,182		—		—		—
2018-1C Tower Securities		18,072		—		—		—		—		—
Revolving Credit Facility		7,411		—		8,046		—		4,167		—
2014 Term Loan		15,550		146		49,414		525		48,962		510
2015 Term Loan		5,237		187		16,641		676		16,487		656
2018 Term Loan		72,648		543		—		—		—		—
Capitalized interest and other		(335)		—		(207)		—		(366)		—
Total	$	376,217	$	2,640	$	323,749	$	2,879	$	329,171	$	2,203