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Segment Data (Schedule of Segment Reporting Information) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Segment Reporting Information [Line Items]          
Revenues $ 732,327 $ 667,595 $ 2,095,556 $ 1,985,934  
Cost of revenues 189,789 150,339 515,552 429,598  
Operating profit 542,538 517,256 1,580,004 1,556,336  
Selling, general, and administrative expenses [1] 66,008 60,087 203,249 191,161  
Acquisition and new business initiatives related adjustments and expenses 5,156 5,388 18,422 19,379  
Asset impairment and decommission costs 20,322 12,670 102,578 87,928  
Depreciation, amortization and accretion 76,883 63,515 211,894 204,444  
Operating income 374,169 375,596 1,043,861 1,053,424  
Other expense, net (principally interest expense and other income) (85,086) (77,389) (234,100) (436,632)  
Income before income taxes 289,083 298,207 809,761 616,792  
Cash capital expenditures 74,722 272,297 832,095 441,163  
Assets 11,260,239   11,260,239   $ 11,417,336
Domestic Site Leasing [Member]          
Segment Reporting Information [Line Items]          
Revenues 470,251 464,860 1,401,052 1,389,563  
Cost of revenues 70,251 68,908 207,944 200,368  
Operating profit 400,000 395,952 1,193,108 1,189,195  
Selling, general, and administrative expenses 30,889 32,114 93,411 100,070  
Acquisition and new business initiatives related adjustments and expenses 4,295 3,496 14,823 11,883  
Asset impairment and decommission costs 18,182 1,337 53,322 45,075  
Depreciation, amortization and accretion 37,085 34,636 110,668 108,851  
Operating income 309,549 324,369 920,884 923,316  
Cash capital expenditures 43,344 234,962 127,629 324,586  
Assets 6,241,281   6,241,281   6,206,748
International Site Leasing [Member]          
Segment Reporting Information [Line Items]          
Revenues 186,176 160,837 503,372 490,867  
Cost of revenues 57,030 49,040 153,386 146,525  
Operating profit 129,146 111,797 349,986 344,342  
Selling, general, and administrative expenses 16,706 15,258 54,933 46,741  
Acquisition and new business initiatives related adjustments and expenses 861 1,892 3,599 7,496  
Asset impairment and decommission costs 2,140 10,989 48,546 42,086  
Depreciation, amortization and accretion 36,765 26,098 92,537 87,384  
Operating income 72,674 57,560 150,371 160,635  
Cash capital expenditures 26,754 36,317 695,876 113,606  
Assets 4,627,565   4,627,565   3,417,981
Site Development [Member]          
Segment Reporting Information [Line Items]          
Revenues 75,900 41,898 191,132 105,504  
Cost of revenues 62,508 32,391 154,222 82,705  
Operating profit 13,392 9,507 36,910 22,799  
Selling, general, and administrative expenses 3,394 2,849 9,674 10,219  
Depreciation, amortization and accretion 960 895 2,681 2,767  
Operating income 9,038 5,763 24,555 9,813  
Cash capital expenditures 2,390 428 4,690 610  
Assets 104,821   104,821   65,481
Other [Member]          
Segment Reporting Information [Line Items]          
Selling, general, and administrative expenses 15,019 9,866 45,231 34,131  
Asset impairment and decommission costs   344 710 767  
Depreciation, amortization and accretion 2,073 1,886 6,008 5,442  
Operating income (17,092) (12,096) (51,949) (40,340)  
Other expense, net (principally interest expense and other income) (85,086) (77,389) (234,100) (436,632)  
Cash capital expenditures 2,234 590 3,900 2,361  
Assets 286,572   286,572   1,727,126
Brazil [Member] | International Site Leasing [Member]          
Segment Reporting Information [Line Items]          
Revenues $ 87,300 $ 89,300 $ 257,400 $ 279,900  
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%  
2019-1C Tower Securities [Member]          
Segment Reporting Information [Line Items]          
Cash held in escrow         $ 1,165,000
[1] Includes non-cash compensation of $18,655 and $15,732 for the three months ended September 30, 2025 and 2024, respectively, and $54,569 and $54,376 for the nine months ended September 30, 2025 and 2024, respectively.