v3.26.1
Segment Reporting (Details)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
segment
Jun. 30, 2025
USD ($)
Segment Reporting [Abstract]        
Number of operating segments | segment     1  
Number of reportable segments | segment     1  
Segment Reporting [Line Items]        
Total revenues $ 22,791 $ 21,132 $ 45,898 $ 42,018
Less: Significant and other segment expenses        
Bad debt expense 398 265 824 588
Interest expense, net 1,055 922 2,086 1,838
Other expense, net 107 11 239 57
Income tax expense 1,089 1,058 1,919 1,943
Net income 3,239 3,222 5,743 6,175
Equipment revenues        
Segment Reporting [Line Items]        
Total revenues 3,524 3,439 7,520 7,143
Less: Significant and other segment expenses        
Cost of equipment sales 5,055 4,659 10,543 9,457
Wireless        
Segment Reporting [Line Items]        
Total revenues 22,791 21,132 45,898 42,018
Less: Significant and other segment expenses        
Employee expenses 1,971 1,902 4,105 3,811
Lease expense 1,359 1,258 2,941 2,465
Advertising expense 926 864 1,827 1,676
Bad debt expense 398 265 824 588
Other segment items 4,158 3,825 8,420 7,664
Depreciation and amortization 3,434 3,146 7,251 6,344
Interest expense, net 1,055 922 2,086 1,838
Other expense, net 107 11 239 57
Income tax expense 1,089 1,058 1,919 1,943
Net income 3,239 3,222 5,743 6,175
Wireless | Equipment revenues        
Less: Significant and other segment expenses        
Cost of equipment sales $ 5,055 $ 4,659 $ 10,543 $ 9,457