v3.25.3
Segment Reporting (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Segment Reporting Information [Line Items]        
Total revenues $ 21,957 $ 20,162 $ 63,975 $ 59,528
Less: Significant and other segment expenses        
Bad debt expense 337 299 925 836
Impairment expense 278 0 278 0
Interest expense, net 924 836 2,762 2,570
Other expense (income), net 78 (7) 135 (19)
Income tax expense 814 908 2,757 2,515
Net income 2,714 3,059 8,889 8,358
Equipment revenues        
Segment Reporting Information [Line Items]        
Total revenues 3,465 3,207 10,608 9,564
Less: Significant and other segment expenses        
Cost of equipment sales 4,853 4,307 14,310 12,794
Wireless        
Segment Reporting Information [Line Items]        
Total revenues 21,957 20,162 63,975 59,528
Less: Significant and other segment expenses        
Employee expenses 2,210 1,779 6,021 5,187
Lease expense 1,340 1,270 3,805 3,795
Advertising expense 906 754 2,582 2,143
Bad debt expense 337 299 925 836
Other segment items 4,095 3,806 11,759 11,579
Impairment expense 278 0 278 0
Depreciation and amortization 3,408 3,151 9,752 9,770
Interest expense, net 924 836 2,762 2,570
Other expense (income), net 78 (7) 135 (19)
Income tax expense 814 908 2,757 2,515
Net income 2,714 3,059 8,889 8,358
Wireless | Equipment revenues        
Less: Significant and other segment expenses        
Cost of equipment sales $ 4,853 $ 4,307 $ 14,310 $ 12,794