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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, 2025
Dec. 31, 2024
Finite-Lived Intangible Assets [Line Items]    
Gross carrying amount $ 7,355,441 $ 7,061,017
Accumulated amortization (4,775,635) (4,672,310)
Net book value 2,579,806 2,388,707
Current Contract Intangibles [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross carrying amount 5,404,347 5,164,263
Accumulated amortization (3,419,317) (3,338,705)
Net book value 1,985,030 1,825,558
Network Location Intangibles [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross carrying amount 1,951,094 1,896,754
Accumulated amortization (1,356,318) (1,333,605)
Net book value $ 594,776 $ 563,149