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Wireless Licenses, Goodwill and Other Intangible Assets - Narrative (Detail) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2023
Mar. 31, 2021
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Indefinite-lived Intangible Assets [Line Items]          
Payments for intangible assets     $ 5,796 $ 3,653 $ 47,596
Capitalized interest costs     1,818 2,030 1,841
Verizon Business Group goodwill impairment $ 5,800   5,841 0 0
Goodwill impairment, after-tax 5,800        
Wireless Licenses          
Indefinite-lived Intangible Assets [Line Items]          
Wireless licenses under development $ 15,000   15,000 41,700  
Capitalized interest costs     $ 1,400 $ 1,700  
Average remaining renewal period of wireless license portfolio (in years)     10 years 15 years  
Spectrum Licenses, C-Band | Loss on spectrum license transactions          
Indefinite-lived Intangible Assets [Line Items]          
Payments for intangible assets   $ 44,600     45,500
Spectrum Licenses, C-Band | Loss on spectrum license transactions | Satellite Agreements          
Indefinite-lived Intangible Assets [Line Items]          
Payments for intangible assets       $ 310  
Spectrum Licenses, C-Band | Loss on spectrum license transactions | Projected Clearing Costs          
Indefinite-lived Intangible Assets [Line Items]          
Payments for intangible assets     $ 4,300 $ 1,600 $ 1,300