Segment Data (Schedule of Segment Reporting Information) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Segment Reporting Information [Line Items]
Revenues		$ 664,248	$ 657,862
Cost of revenues		153,666	137,991
Operating profit		510,582	519,871
Selling, general, and administrative expenses	[1]	66,219	68,698
Acquisition and new business initiatives related adjustments and expenses		7,379	7,417
Asset impairment and decommission costs		37,026	43,648
Depreciation, amortization and accretion		65,048	76,750
Operating income		334,910	323,358
Other expense, net (principally interest expense and other income)		(74,985)	(151,888)
Income before income taxes		259,925	171,470
Cash capital expenditures		110,440	77,276
Assets		10,442,917		$ 11,417,336
Domestic Site Leasing [Member]
Segment Reporting Information [Line Items]
Revenues		460,994	461,499
Cost of revenues		68,272	65,970
Operating profit		392,722	395,529
Selling, general, and administrative expenses		31,007	34,348
Acquisition and new business initiatives related adjustments and expenses		5,861	5,298
Asset impairment and decommission costs		15,164	29,913
Depreciation, amortization and accretion		36,744	40,345
Operating income		303,946	285,625
Cash capital expenditures		42,379	41,021
Assets		6,224,701		6,206,748
International Site Leasing [Member]
Segment Reporting Information [Line Items]
Revenues		155,215	166,777
Cost of revenues		47,206	48,843
Operating profit		108,009	117,934
Selling, general, and administrative expenses		17,424	15,708
Acquisition and new business initiatives related adjustments and expenses		1,518	2,119
Asset impairment and decommission costs		21,318	13,735
Depreciation, amortization and accretion		25,523	33,829
Operating income		42,226	52,543
Cash capital expenditures		66,340	35,602
Assets		3,619,615		3,417,981
Site Development [Member]
Segment Reporting Information [Line Items]
Revenues		48,039	29,586
Cost of revenues		38,188	23,178
Operating profit		9,851	6,408
Selling, general, and administrative expenses		3,215	4,426
Depreciation, amortization and accretion		857	834
Operating income		5,779	1,148
Cash capital expenditures		826	59
Assets		75,558		65,481
Other [Member]
Segment Reporting Information [Line Items]
Selling, general, and administrative expenses		14,573	14,216
Asset impairment and decommission costs		544
Depreciation, amortization and accretion		1,924	1,742
Operating income		(17,041)	(15,958)
Other expense, net (principally interest expense and other income)		(74,985)	(151,888)
Cash capital expenditures		895	594
Assets		523,043		$ 1,727,126
Brazil [Member] | International Site Leasing [Member]
Segment Reporting Information [Line Items]
Revenues		$ 85,000	$ 97,500
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%

[1] Includes non-cash compensation of $15,075 and $20,773 for the three months ended March 31, 2025 and 2024.