v3.25.1
Segment Reporting (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Segment Reporting Information [Line Items]    
Total revenues $ 20,886 $ 19,594
Less: Significant and other segment expenses    
Bad debt expense 323 282
Interest expense, net 916 880
Other expense (income), net 46 (20)
Income tax expense 885 764
Net income 2,953 2,374
Equipment revenues    
Segment Reporting Information [Line Items]    
Total revenues 3,704 3,251
Less: Significant and other segment expenses    
Cost of equipment sales 4,798 4,399
Wireless    
Segment Reporting Information [Line Items]    
Total revenues 20,886 19,594
Less: Significant and other segment expenses    
Employee expenses 1,909 1,683
Lease expense 1,207 1,268
Advertising expense 812 648
Bad debt expense 323 282
Other segment items 3,839 3,945
Depreciation and amortization 3,198 3,371
Interest expense, net 916 880
Other expense (income), net 46 (20)
Income tax expense 885 764
Net income 2,953 2,374
Wireless | Equipment revenues    
Less: Significant and other segment expenses    
Cost of equipment sales $ 4,798 $ 4,399