Segment Data (Tables)

12 Months Ended

Dec. 31, 2016

Segment Data [Abstract]

Segment Reporting Information Disclosure

	Domestic Site		Int'l Site		Site		Not Identified
	Leasing		Leasing		Development		by Segment		Total
For the year ended December 31, 2016	(in thousands)
Revenues	$	1,273,866	$	264,204	$	95,055	$	—	$	1,633,125
Cost of revenues (2)		260,941		81,274		78,682		—		420,897
Operating profit		1,012,925		182,930		16,373		—		1,212,228
Selling, general, and administrative		72,701		35,897		13,039		21,712		143,349
Acquisition related adjustments and expenses		6,233		6,907		—		—		13,140
Asset impairment and decommission costs		26,073		1,824		—		2,345		30,242
Depreciation, amortization and accretion		509,108		119,466		3,402		6,213		638,189
Operating income (loss)		398,810		18,836		(68)		(30,270)		387,308
Other expense (principally interest expense
and other expense)								(300,005)		(300,005)
Income before provision for income taxes										87,303
Cash capital expenditures (3)		310,256		102,282		1,955		3,710		418,203
For the year ended December 31, 2015
Revenues	$	1,236,758	$	243,876	$	157,840	$	—	$	1,638,474
Cost of revenues (2)		252,493		72,162		119,744		—		444,399
Operating profit		984,265		171,714		38,096		—		1,194,075
Selling, general, and administrative		67,413		16,196		12,247		19,095		114,951
Acquisition related adjustments and expenses		9,975		1,889		—		—		11,864
Asset impairment and decommission costs		93,977		806		—		—		94,783
Depreciation, amortization and accretion		534,436		118,886		3,662		3,037		660,021
Operating income (loss)		278,464		33,937		22,187		(22,132)		312,456
Other expense (principally interest expense
and other expense)								(479,051)		(479,051)
Loss before provision for income taxes										(166,595)
Cash capital expenditures (3)		709,337		94,693		3,495		13,339		820,864
For the year ended December 31, 2014
Revenues	$	1,157,293	$	202,909	$	166,794	$	—	$	1,526,996
Cost of revenues (2)		247,237		54,076		127,172		—		428,485
Operating profit		910,056		148,833		39,622		—		1,098,511
Selling, general, and administrative		67,611		16,762		9,074		9,870		103,317
Acquisition related adjustments and expenses		3,351		4,447		—		—		7,798
Asset impairment and decommission costs		21,538		2,263		—		—		23,801
Depreciation, amortization and accretion		515,150		104,447		2,453		5,022		627,072
Operating income (loss)		302,406		20,914		28,095		(14,892)		336,523
Other expense (principally interest expense
and other expense)								(352,183)		(352,183)
Loss before provision for income taxes										(15,660)
Cash capital expenditures (3)		547,774		1,221,786		3,851		24,352		1,797,763

	Domestic Site		Int'l Site		Site		Not Identified
	Leasing		Leasing		Development		by Segment (1)		Total
	(in thousands)
Assets
As of December 31, 2016	$	5,396,394	$	1,839,703	$	43,769	$	81,079	$	7,360,945
As of December 31, 2015	$	5,587,476	$	1,564,496	$	56,631	$	104,377	$	7,312,980

(1)Assets not identified by segment consist primarily of general corporate assets.

(2)Excludes depreciation, amortization, and accretion.

(3)Includes cash paid for capital expenditures and acquisitions and vehicle capital lease additions.