Segment Data (Schedule of Segment Reporting Information) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Segment Reporting Information [Line Items]
Revenues		$ 652,006	$ 575,528	$ 1,271,776	$ 1,124,266
Cost of revenues		166,012	135,759	318,939	265,533
Operating profit		485,994	439,769	952,837	858,733
Selling, general, and administrative expenses	[1]	63,274	53,945	125,398	105,546
Acquisition and new business initiatives related adjustments and expenses		6,829	6,794	11,933	11,795
Asset impairment and decommission costs		8,521	3,797	17,033	8,700
Depreciation, amortization and accretion		176,392	175,469	350,716	359,350
Operating income		230,978	199,764	447,757	373,342
Other expense (principally interest expense and other expense)		(165,390)	155	(153,385)	(206,092)
Income before income taxes		65,588	199,919	294,372	167,250
Cash capital expenditures		193,078	108,746	446,941	1,186,991
Assets		10,011,937		10,011,937		$ 9,801,699
Domestic Site Leasing [Member]
Segment Reporting Information [Line Items]
Revenues		442,084	418,829	875,070	822,407
Cost of revenues		65,768	63,948	131,573	129,069
Operating profit		376,316	354,881	743,497	693,338
Selling, general, and administrative expenses		26,225	29,201	49,598	57,257
Acquisition and new business initiatives related adjustments and expenses		2,789	4,596	6,388	7,928
Asset impairment and decommission costs		7,089	2,690	12,572	6,561
Depreciation, amortization and accretion		122,570	128,034	245,704	267,025
Operating income		217,643	190,360	429,235	354,567
Cash capital expenditures		94,427	88,051	133,972	1,147,729
Assets		6,481,640		6,481,640		6,628,156
International Site Leasing [Member]
Segment Reporting Information [Line Items]
Revenues		138,149	105,266	264,595	206,790
Cost of revenues		45,747	31,402	87,097	61,649
Operating profit		92,402	73,864	177,498	145,141
Selling, general, and administrative expenses		15,073	9,521	30,567	17,281
Acquisition and new business initiatives related adjustments and expenses		4,040	2,198	5,545	3,867
Asset impairment and decommission costs		1,432	961	4,461	1,993
Depreciation, amortization and accretion		51,597	44,744	100,478	87,865
Operating income		20,260	16,440	36,447	34,135
Cash capital expenditures		95,294	18,728	307,065	35,675
Assets		3,072,702		3,072,702		2,870,503
Site Development [Member]
Segment Reporting Information [Line Items]
Revenues		71,773	51,433	132,111	95,069
Cost of revenues		54,497	40,409	100,269	74,815
Operating profit		17,276	11,024	31,842	20,254
Selling, general, and administrative expenses		5,212	3,994	10,734	9,783
Depreciation, amortization and accretion		619	1,017	1,207	1,162
Operating income		11,445	6,013	19,901	9,309
Cash capital expenditures		1,728	721	2,694	1,591
Assets		107,402		107,402		87,410
Other [Member]
Segment Reporting Information [Line Items]
Selling, general, and administrative expenses		16,764	11,229	34,499	21,225
Asset impairment and decommission costs			146		146
Depreciation, amortization and accretion		1,606	1,674	3,327	3,298
Operating income		(18,370)	(13,049)	(37,826)	(24,669)
Other expense (principally interest expense and other expense)		(165,390)	155	(153,385)	(206,092)
Cash capital expenditures		1,629	1,246	3,210	1,996
Assets		350,193		350,193		$ 215,630
Brazil [Member]
Segment Reporting Information [Line Items]
Assets		900,000		900,000
Brazil [Member] | International Site Leasing [Member]
Segment Reporting Information [Line Items]
Revenues		$ 73,800	$ 58,400	$ 139,100	$ 113,800

[1] Includes non-cash compensation of $23,248 and $21,077 for the three months ended June 30, 2022 and 2021, respectively, and $47,364 and $40,661 for the six months ended June 30, 2022 and 2021, respectively.