v3.26.1
Wireless Licenses, Goodwill and Other Intangible Assets - Estimated Future Amortization Expense (Detail) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract]    
Amortization expense for other intangible assets $ 836 $ 734
Remainder of 2025 2,534  
2027 2,885  
2028 2,316  
2029 1,475  
2030 1,212  
2031 $ 851