v3.26.1
Wireless Licenses, Goodwill and Other Intangible Assets - Additional Information (Detail) - Wireless Licenses - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Indefinite-lived Intangible Assets [Line Items]    
Wireless licenses under development $ 6,300 $ 9,400
Interest costs capitalized $ 82 $ 122
Average remaining renewal period of wireless license portfolio (in years) 10 years