Intangible Assets, Net (Gross and Net Carrying Amounts for each Major Class of Intangible Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 7,160,610	$ 7,063,235
Accumulated amortization	(4,532,533)	(4,286,763)
Net book value	2,628,077	2,776,472
Current Contract Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	5,246,825	5,170,187
Accumulated amortization	(3,248,516)	(3,060,494)
Net book value	1,998,309	2,109,693
Network Location Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	1,913,785	1,893,048
Accumulated amortization	(1,284,017)	(1,226,269)
Net book value	$ 629,768	$ 666,779