v3.22.0.1
Property and Equipment (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Property, Plant and Equipment [Line Items]      
Accumulated depreciation and amortization $ (49,818) $ (42,395)  
Property and equipment, net 39,803 41,175  
Depreciation expense 15,200 13,100 $ 6,500
Depreciation expense for lease devices 3,100 3,100 543
Capitalized interest 210 440 $ 473
Land      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment 225 236  
Buildings and equipment      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment 4,344 4,006  
Wireless communications systems      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment 57,114 49,453  
Leasehold improvements      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment 2,160 1,879  
Capitalized software      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment 18,243 16,412  
Leased wireless devices      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment 3,832 6,989  
Construction in progress      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment $ 3,703 $ 4,595  
Maximum | Buildings and equipment      
Property, Plant and Equipment [Line Items]      
Useful life (in years) 30 years    
Maximum | Wireless communications systems      
Property, Plant and Equipment [Line Items]      
Useful life (in years) 20 years    
Maximum | Leasehold improvements      
Property, Plant and Equipment [Line Items]      
Useful life (in years) 10 years    
Maximum | Capitalized software      
Property, Plant and Equipment [Line Items]      
Useful life (in years) 10 years    
Maximum | Leased wireless devices      
Property, Plant and Equipment [Line Items]      
Useful life (in years) 19 months