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Equity and Accumulated Other Comprehensive Loss - Changes in AOCI (Detail) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Beginning balance $ 93,799  
Other comprehensive income (loss) attributable to Verizon 181 $ (312)
Ending balance 95,726 94,219
Accumulated Other Comprehensive Loss    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Beginning balance (1,380) (1,865)
Other comprehensive loss (52)  
Amounts reclassified to net income 22  
Other comprehensive income (loss) attributable to Verizon 181 (312)
Ending balance (1,199) $ (2,177)
Foreign  currency translation adjustments    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Beginning balance (636)  
Other comprehensive loss (50)  
Other comprehensive income (loss) attributable to Verizon (50)  
Ending balance (686)  
Unrealized gain (loss) on cash flow hedges    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Beginning balance (1,062)  
Amounts reclassified to net income 35  
Other comprehensive income (loss) attributable to Verizon 35  
Ending balance (1,027)  
Unrealized gain (loss) on fair value hedges    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Beginning balance 105  
Other comprehensive loss 211  
Amounts reclassified to net income (11)  
Other comprehensive income (loss) attributable to Verizon 200  
Ending balance 305  
Unrealized loss on marketable securities    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Beginning balance (2)  
Other comprehensive loss (2)  
Other comprehensive income (loss) attributable to Verizon (2)  
Ending balance (4)  
Defined benefit pension and postretirement plans    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Beginning balance 215  
Amounts reclassified to net income (2)  
Other comprehensive income (loss) attributable to Verizon (2)  
Ending balance $ 213