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Equity and Comprehensive Income (Loss) - Comprehensive Income (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at beginning of year $ 92,463 $ 83,200  
Other comprehensive income (loss) attributable to Verizon 485 (938) $ (856)
Balance at end of year 93,799 92,463 83,200
Accumulated Other Comprehensive Income (Loss)      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at beginning of year (1,865) (927) (71)
Other comprehensive income (loss) 70 (669) (1,467)
Amounts reclassified to net income (202) 102 611
Other comprehensive income (loss) attributable to Verizon 485 (938) (856)
Balance at end of year (1,380) (1,865) (927)
Foreign currency translation adjustments      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at beginning of year (698) (545) (404)
Other comprehensive income (loss) 62 (153) (141)
Other comprehensive income (loss) attributable to Verizon 62 (153) (141)
Balance at end of year (636) (698) (545)
Unrealized gain (loss) on cash flow hedges      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at beginning of year (1,150) (1,472) (1,387)
Other comprehensive income (loss) 3 (174) (1,318)
Amounts reclassified to net income 85 496 1,233
Other comprehensive income (loss) attributable to Verizon 88 322 (85)
Balance at end of year (1,062) (1,150) (1,472)
Unrealized gain (loss) on fair value hedges      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at beginning of year (431) 0 0
Other comprehensive income (loss) 617 (371)  
Amounts reclassified to net income (81) (60)  
Other comprehensive income (loss) attributable to Verizon 536 (431)  
Balance at end of year 105 (431) 0
Unrealized gain (loss) on marketable securities      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at beginning of year (9) 16 25
Other comprehensive income (loss) 5 (25) (8)
Amounts reclassified to net income 2   (1)
Other comprehensive income (loss) attributable to Verizon 7 (25) (9)
Balance at end of year (2) (9) 16
Defined benefit pension and postretirement plans      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at beginning of year 423 1,074 1,695
Other comprehensive income (loss)   (317)  
Amounts reclassified to net income (208) (334) (621)
Other comprehensive income (loss) attributable to Verizon (208) (651) (621)
Balance at end of year $ 215 $ 423 $ 1,074