v3.25.3
Property and Equipment - Schedule of Components of Property and Equipment, Excluding Amounts Transferred to Held for Sale (Details) - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Property, Plant and Equipment [Line Items]    
Accumulated depreciation and amortization $ (61,993) $ (56,367)
Property and equipment, net 38,718 38,533
Land    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 100 69
Buildings and equipment    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 4,652 4,377
Wireless communications systems    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 68,770 65,778
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 2,704 2,588
Capitalized software    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 21,041 18,566
Leased wireless devices    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 42 145
Construction in progress    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 3,402 $ 3,377
Maximum | Buildings and equipment    
Property, Plant and Equipment [Line Items]    
Useful Lives 30 years  
Maximum | Wireless communications systems    
Property, Plant and Equipment [Line Items]    
Useful Lives 20 years  
Maximum | Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Useful Lives 10 years  
Maximum | Capitalized software    
Property, Plant and Equipment [Line Items]    
Useful Lives 8 years  
Maximum | Leased wireless devices    
Property, Plant and Equipment [Line Items]    
Useful Lives 16 months