Segment Data (Schedule of Segment Reporting Information) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Segment Reporting Information [Line Items]
Revenues		$ 678,500	$ 652,006	$ 1,354,016	$ 1,271,776
Cost of revenues		154,250	166,012	318,554	318,939
Operating profit		524,250	485,994	1,035,462	952,837
Selling, general, and administrative expenses	[1]	63,383	63,274	135,592	125,398
Acquisition and new business initiatives related adjustments and expenses		4,953	6,829	11,010	11,933
Asset impairment and decommission costs		32,867	8,521	59,257	17,033
Depreciation, amortization and accretion		181,820	176,392	364,235	350,716
Operating income		241,227	230,978	465,368	447,757
Other expense, net (principally interest expense and other income)		(68,435)	(165,390)	(148,512)	(153,385)
Income before income taxes		172,792	65,588	316,856	294,372
Cash capital expenditures		84,032	193,078	153,351	446,941
Assets		10,604,470		10,604,470		$ 10,585,041
Domestic Site Leasing [Member]
Segment Reporting Information [Line Items]
Revenues		456,754	442,084	911,588	875,070
Cost of revenues		64,434	65,768	134,183	131,573
Operating profit		392,320	376,316	777,405	743,497
Selling, general, and administrative expenses		28,445	26,225	60,188	49,598
Acquisition and new business initiatives related adjustments and expenses		2,573	2,789	5,805	6,388
Asset impairment and decommission costs		30,465	7,089	49,900	12,572
Depreciation, amortization and accretion		117,353	122,570	236,840	245,704
Operating income		213,484	217,643	424,672	429,235
Cash capital expenditures		50,943	94,427	95,578	133,972
Assets		6,133,583		6,133,583		6,308,204
International Site Leasing [Member]
Segment Reporting Information [Line Items]
Revenues		169,389	138,149	331,823	264,595
Cost of revenues		50,580	45,747	100,950	87,097
Operating profit		118,809	92,402	230,873	177,498
Selling, general, and administrative expenses		18,413	15,073	35,143	30,567
Acquisition and new business initiatives related adjustments and expenses		2,380	4,040	5,205	5,545
Asset impairment and decommission costs		2,244	1,432	7,130	4,461
Depreciation, amortization and accretion		61,892	51,597	122,304	100,478
Operating income		33,880	20,260	61,091	36,447
Cash capital expenditures		32,079	95,294	55,112	307,065
Assets		3,908,377		3,908,377		3,808,699
Site Development [Member]
Segment Reporting Information [Line Items]
Revenues		52,357	71,773	110,605	132,111
Cost of revenues		39,236	54,497	83,421	100,269
Operating profit		13,121	17,276	27,184	31,842
Selling, general, and administrative expenses		4,471	5,212	10,548	10,734
Depreciation, amortization and accretion		936	619	1,852	1,207
Operating income		7,714	11,445	14,784	19,901
Cash capital expenditures		675	1,728	1,070	2,694
Assets		96,882		96,882		158,137
Other [Member]
Segment Reporting Information [Line Items]
Selling, general, and administrative expenses		12,054	16,764	29,713	34,499
Asset impairment and decommission costs		158		2,227
Depreciation, amortization and accretion		1,639	1,606	3,239	3,327
Operating income		(13,851)	(18,370)	(35,179)	(37,826)
Other expense, net (principally interest expense and other income)		(68,435)	(165,390)	(148,512)	(153,385)
Cash capital expenditures		335	1,629	1,591	3,210
Assets		465,628		465,628		$ 310,001
Brazil [Member] | International Site Leasing [Member]
Segment Reporting Information [Line Items]
Revenues		$ 99,700	$ 73,800	$ 193,600	$ 139,100
Maximum [Member] | Revenue [Member] | Geographic Concentration Risk [Member] | Foreign Countries, Other than Brazil [Member]
Segment Reporting Information [Line Items]
Concentration risk percentage		5.00%	5.00%	5.00%	5.00%

[1] Includes non-cash compensation of $17,566 and $23,248 for the three months ended June 30, 2023 and 2022, respectively, and $43,094 and $47,364 for the six months ended June 30, 2023 and 2022, respectively.