v3.22.0.1
Tower Obligations - Narrative (Details)
$ in Millions
3 Months Ended 12 Months Ended
Jan. 03, 2022
USD ($)
Apr. 01, 2020
USD ($)
Mar. 31, 2020
USD ($)
towerSite
Dec. 31, 2021
USD ($)
towerSite
Dec. 31, 2012
USD ($)
towerSite
Sale Leaseback Transaction [Line Items]          
Tower obligation payments, due next year       $ 415  
Tower obligation payments, due within two and three years       630  
Tower obligation payment, due within four and five years       626  
Tower obligation payments due thereafter       329  
Lease liabilities       $ 29,243  
Sprint          
Sale Leaseback Transaction [Line Items]          
Property and equipment   $ 18,435      
Adjustment, other long-term liabilities   1,700      
Minimum          
Sale Leaseback Transaction [Line Items]          
Lessee leasing arrangements, operating leases, term of contract (years)       5 years  
Minimum | Subsequent Event          
Sale Leaseback Transaction [Line Items]          
Increase to deferred tax liabilities $ 1,200        
Maximum          
Sale Leaseback Transaction [Line Items]          
Lessee leasing arrangements, operating leases, term of contract (years)       15 years  
Maximum | Subsequent Event          
Sale Leaseback Transaction [Line Items]          
Increase to deferred tax liabilities 1,400        
Crown Castle International Corp.          
Sale Leaseback Transaction [Line Items]          
Managed sites | towerSite       900  
Lease liabilities       $ 282  
Crown Castle International Corp. | Subsequent Event          
Sale Leaseback Transaction [Line Items]          
Increase to deferred tax liabilities $ 1,200        
Tower Transaction          
Sale Leaseback Transaction [Line Items]          
Lessee leasing arrangements, operating leases, term of contract (years)         10 years
Sale leaseback transaction, fixed-price purchase options         $ 2,000
Interest rate on tower obligations       6.00% 8.00%
Tower Transaction | Tower          
Sale Leaseback Transaction [Line Items]          
Useful life (in years)       20 years  
Tower Transaction | Minimum          
Sale Leaseback Transaction [Line Items]          
Lessee leasing arrangements, operating leases, term of contract (years)         23 years
Tower Transaction | Maximum          
Sale Leaseback Transaction [Line Items]          
Lessee leasing arrangements, operating leases, term of contract (years)         37 years
Tower Transaction | Crown Castle International Corp.          
Sale Leaseback Transaction [Line Items]          
Property subject to failed sale leaseback transaction, number of units | towerSite     6,400   6,200
Remaining term of lease     17 years    
Fixed-price purchase option on leased or subleased sites     $ 2,300    
Fixed-price purchase option on lease or subleased sites, exercisable period     1 year    
Days prior to expiration of agreement     120 days    
Initial term     10 years    
Property and equipment   2,800      
Tower obligations   $ 1,100