Debt (Tables)

6 Months Ended

Jun. 30, 2018

Debt [Abstract]

Schedule of Carrying and Principal Values of Debt

		As of						As of
		June 30, 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	$	746,250	$	740,162	$	750,000	$	770,625	$	739,079
2016 Senior Notes	Sep. 1, 2024		1,100,000		1,056,000		1,082,460		1,100,000		1,127,500		1,081,262
2017 Senior Notes	Oct. 1, 2022		750,000		720,000		742,259		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		564,644		569,156		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		909,402		916,317		920,000		915,216		914,929
2014-2C Tower Securities	Oct. 8, 2024		620,000		605,535		613,884		620,000		620,942		613,461
2015-1C Tower Securities	Oct. 8, 2020		500,000		490,560		494,593		500,000		496,840		493,474
2016-1C Tower Securities	Jul. 9, 2021		700,000		687,757		694,046		700,000		691,166		693,118
2017-1C Tower Securities	Apr. 11, 2022		760,000		738,165		752,037		760,000		751,404		751,076
2018-1C Tower Securities	Mar. 9, 2023		640,000		637,267		631,956		—		—		—
Revolving Credit Facility	Apr. 11, 2023		85,000		85,000		85,000		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		2,400,000		2,385,000		2,377,868		—		—		—
Total debt		$	9,800,000	$	9,625,580	$	9,699,738	$	9,405,000	$	9,436,290	$	9,310,686
Less: current maturities of long-term debt							(24,000)						(20,000)
Total long-term debt, net of current maturities						$	9,675,738					$	9,290,686

Schedule of Cash and Non-Cash Interest Expense

	For the three months ended June 30,								For the six months ended June 30,
	2018				2017				2018				2017
	Cash		Non-cash		Cash		Non-cash		Cash		Non-cash		Cash		Non-cash
	Interest		Interest		Interest		Interest		Interest		Interest		Interest		Interest
	(in thousands)
2014 Senior Notes	$	9,141	$	189	$	9,141	$	180	$	18,281	$	376	$	18,281	$	357
2016 Senior Notes		13,406		249		13,406		237		26,813		495		26,813		471
2017 Senior Notes		7,500		—		—		—		15,000		—		—		—
2012 Tower Securities		—		—		806		—		—		—		5,331		—
2013 Tower Securities		5,396		—		10,804		—		14,871		—		21,609		—
2014 Tower Securities		12,785		—		12,785		—		25,569		—		25,569		—
2015-1C Tower Securities		3,985		—		3,985		—		7,969		—		7,969		—
2016-1C Tower Securities		5,090		—		5,090		—		10,181		—		10,181		—
2017-1C Tower Securities		6,088		—		5,001		—		12,173		—		5,001		—
2018-1C Tower Securities		5,570		—		—		—		6,932		—		—		—
Revolving Credit Facility		1,589		—		1,406		—		3,191		—		4,176		—
2014 Term Loan		1,603		15		12,043		131		15,550		146		23,327		259
2015 Term Loan		540		19		4,056		169		5,237		187		7,855		334
2018 Term Loan		21,207		166		—		—		21,207		166		—		—
Other		(261)		—		(67)		—		(412)		—		(54)		—
Total	$	93,639	$	638	$	78,456	$	717	$	182,562	$	1,370	$	156,058	$	1,421