v3.25.2
Additional Financial Information (Summary of Cash Paid for Interest and Taxes) (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Cash paid (received) during the period for:    
Interest $ 3,316 $ 3,644
Income taxes, net of refunds 880 299
Payments to Acquire Property, Plant and Equipment 9,174 8,118
Interest during construction 111 199
Acquisitions 48 270
Business acquisitions    
Cash paid (received) during the period for:    
Acquisitions 0 0
Spectrum Licenses    
Cash paid (received) during the period for:    
Acquisitions 14 147
Interest during construction 34 123
Property, Plant and Equipment [Member]    
Cash paid (received) during the period for:    
Payments to Acquire Property, Plant and Equipment 9,097 8,042
Interest during construction $ 77 $ 76