v3.25.2
Property, Plant and Equipment - Components (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Property, Plant and Equipment [Line Items]    
Gross property, plant and equipment $ 16,073 $ 17,775
Accumulated depreciation (8,580) (8,910)
Net property, plant and equipment 7,493 8,865
Land    
Property, Plant and Equipment [Line Items]    
Gross property, plant and equipment 329 329
Fiber, conduit and other outside plant    
Property, Plant and Equipment [Line Items]    
Gross property, plant and equipment $ 7,228 8,246
Fiber, conduit and other outside plant | Minimum    
Property, Plant and Equipment [Line Items]    
Depreciable Lives 15 years  
Fiber, conduit and other outside plant | Maximum    
Property, Plant and Equipment [Line Items]    
Depreciable Lives 45 years  
Central office and other network electronics    
Property, Plant and Equipment [Line Items]    
Gross property, plant and equipment $ 5,312 5,792
Central office and other network electronics | Minimum    
Property, Plant and Equipment [Line Items]    
Depreciable Lives 7 years  
Central office and other network electronics | Maximum    
Property, Plant and Equipment [Line Items]    
Depreciable Lives 10 years  
Support assets    
Property, Plant and Equipment [Line Items]    
Gross property, plant and equipment $ 2,905 2,878
Support assets | Minimum    
Property, Plant and Equipment [Line Items]    
Depreciable Lives 3 years  
Support assets | Maximum    
Property, Plant and Equipment [Line Items]    
Depreciable Lives 30 years  
Construction in progress    
Property, Plant and Equipment [Line Items]    
Gross property, plant and equipment $ 299 $ 530