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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
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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

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