Debt (Tables)

12 Months Ended

Dec. 31, 2017

Debt [Abstract]

Schedule Of Carrying And Principal Values Of Debt

		As of						As of
		December 31, 2017						December 31, 2016
	Maturity Date	Principal Balance		Fair Value		Carrying Value		Principal Balance		Fair Value		Carrying Value
2014 Senior Notes	July 15, 2022	$	750,000	$	770,625	$	739,079	$	750,000	$	763,125	$	736,992
2016 Senior Notes	Sep. 1, 2024		1,100,000		1,127,500		1,081,262		1,100,000		1,083,500		1,078,954
2017 Senior Notes	Oct. 1, 2022		750,000		750,938		741,437		—		—		—
2012-1C Tower Securities	Dec. 11, 2017		—		—		—		610,000		610,165		607,157
2013-1C Tower Securities	April 10, 2018		425,000		423,853		424,482		425,000		423,381		422,768
2013-2C Tower Securities	April 11, 2023		575,000		578,433		568,609		575,000		563,322		567,545
2013-1D Tower Securities	April 10, 2018		330,000		330,145		329,585		330,000		334,521		328,225
2014-1C Tower Securities	Oct. 8, 2019		920,000		915,216		914,929		920,000		922,199		912,219
2014-2C Tower Securities	Oct. 8, 2024		620,000		620,942		613,461		620,000		608,921		612,641
2015-1C Tower Securities	Oct. 8, 2020		500,000		496,840		493,474		500,000		495,145		491,289
2016-1C Tower Securities	July 9, 2021		700,000		691,166		693,118		700,000		688,072		691,322
2017-1C Tower Securities	April 11, 2022		760,000		751,404		751,076		—		—		—
Revolving Credit Facility	Feb. 5, 2020		40,000		40,000		40,000		390,000		390,000		390,000
2014 Term Loan	Mar. 24, 2021		1,447,500		1,451,119		1,439,373		1,462,500		1,467,984		1,452,039
2015 Term Loan	June 10, 2022		487,500		488,109		480,801		492,500		494,347		484,432
Total debt		$	9,405,000	$	9,436,290	$	9,310,686	$	8,875,000	$	8,844,682	$	8,775,583
Less: current maturities of long-term debt							(20,000)						(627,157)
Total long-term debt, net of current maturities						$	9,290,686					$	8,148,426

Schedule Of Future Principal Payment Obligations

For the year ended December 31,	(in thousands)
2018	$	775,000
2019		940,000
2020		560,000
2021		2,107,500
2022		2,727,500

Schedule Of Cash And Non-Cash Interest Expense

	For the year ended December 31,
	2017				2016				2015
	Cash		Non-cash		Cash		Non-cash		Cash		Non-cash
	Interest		Interest		Interest		Interest		Interest		Interest
	(in thousands)
5.625% Senior Notes		—		—		21,094		—		28,125		—
5.75% Senior Notes		—		—		28,494		—		46,000		—
2014 Senior Notes		36,563		724		36,563		689		36,563		655
2016 Senior Notes		53,625		954		20,258		348		—		—
2017 Senior Notes		6,500		—		—		—		—		—
2010 Tower Securities		—		—		15,213		—		28,230		—
2012-1C Tower Securities		5,330		—		18,107		—		18,111		—
2013 Tower Securities		43,217		—		43,217		—		43,217		—
2014 Tower Securities		51,138		—		51,138		—		51,138		—
2015-1C Tower Securities		15,939		—		15,939		—		3,453		—
2016-1C Tower Securities		20,361		—		9,898		—		—		—
2017-1C Tower Securities		17,182		—		—		—		—		—
Revolving Credit Facility		8,046		—		4,167		—		5,552		—
2012-1 Term Loan		—		—		—		—		3,959		—
2014 Term Loan		49,414		525		48,962		510		48,992		492
2015 Term Loan		16,641		676		16,487		656		9,243		358
Capitalized interest and other		(207)		—		(366)		—		(217)		—
Total	$	323,749	$	2,879	$	329,171	$	2,203	$	322,366	$	1,505