Wireless Licenses, Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Indefinite-lived Intangible Assets [Line Items]
Capitalized interest costs	$ 2,030	$ 1,841	$ 555
Wireless Licenses
Indefinite-lived Intangible Assets [Line Items]
Wireless licenses under development	41,700	54,900
Capitalized interest costs	$ 1,700	$ 1,600
Average remaining renewal period of wireless license portfolio (in years)	15 years	11 years