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Property and Equipment, Net (Property and Equipment, Net) (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Property, Plant and Equipment [Line Items]    
Total property and equipment $ 7,629,710 $ 7,072,176
Less: accumulated depreciation (4,334,089) (4,280,092)
Property and equipment, net 3,295,621 2,792,084
Towers and Related Assets [Member]    
Property, Plant and Equipment [Line Items]    
Total property and equipment 6,451,935 5,902,092
Construction-In-Process [Member]    
Property, Plant and Equipment [Line Items]    
Total property and equipment 76,409 72,202
Furniture, Equipment and Vehicles [Member]    
Property, Plant and Equipment [Line Items]    
Total property and equipment 95,048 84,629
Land, Buildings and Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Total property and equipment $ 1,006,318 $ 1,013,253