v3.25.4
Revenue from Contracts with Customers - Schedule of Disaggregation of Revenue (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2025
USD ($)
customer_category
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Disaggregation of Revenue [Line Items]      
Number of customer categories | customer_category 2    
Total revenues $ 88,309 $ 81,400 $ 78,558
Postpaid phone revenues      
Disaggregation of Revenue [Line Items]      
Total revenues 49,443 45,762 43,449
Postpaid other revenues      
Disaggregation of Revenue [Line Items]      
Total revenues 8,489 6,578 5,243
Total postpaid service revenues      
Disaggregation of Revenue [Line Items]      
Total revenues $ 57,932 $ 52,340 $ 48,692