Intangible Assets, Net (Gross and Net Carrying Amounts for each Major Class of Intangible Assets) (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 7,124,713	$ 7,061,017
Accumulated amortization	(4,721,667)	(4,672,310)
Net book value	2,403,046	2,388,707
Current Contract Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	5,211,513	5,164,263
Accumulated amortization	(3,376,899)	(3,338,705)
Net book value	1,834,614	1,825,558
Network Location Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	1,913,200	1,896,754
Accumulated amortization	(1,344,768)	(1,333,605)
Net book value	$ 568,432	$ 563,149