Intangible Assets, Net (Gross and Net Carrying Amounts for each Major Class of Intangible Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 6,897,528	$ 6,674,067
Accumulated amortization	(4,096,966)	(3,870,820)
Net book value	2,800,562	2,803,247
Current Contract Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	5,058,077	4,890,427
Accumulated amortization	(2,920,387)	(2,749,594)
Net book value	2,137,690	2,140,833
Network Location Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	1,839,451	1,783,640
Accumulated amortization	(1,176,579)	(1,121,226)
Net book value	$ 662,872	$ 662,414