Segment Data (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($) item segment	Dec. 31, 2023 USD ($)	Dec. 31, 2022
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of business segments | segment	2
Number of reportable segments | segment	2
Number of measures utilized of segment profit to assess performance and allocate resources | item	2
Assets	$ 11,417,336	$ 10,178,441
2019-1C Tower Securities [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Cash held in escrow	1,165,000
Domestic Site Leasing [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	5,700,000	5,400,000
Assets	6,206,748	5,876,648
International Site Leasing [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	3,000,000	3,400,000
Assets	3,417,981	3,871,164
Brazil [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Assets	$ 1,700,000
Brazil [Member] | International Site Leasing [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Assets		$ 2,100,000
Foreign Countries, Other than Brazil [Member] | Long-Lived Assets [Member] | Maximum [Member] | Geographic Concentration Risk [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk percentage	5.00%	5.00%	5.00%