Equity and Comprehensive Income (Loss) - Comprehensive Income (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of year	$ 93,799	$ 92,463
Other comprehensive income (loss) attributable to Verizon	457	485	$ (938)
Balance at end of year	100,575	93,799	92,463
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of year	(1,380)	(1,865)	(927)
Other comprehensive income (loss)	(116)	70	(669)
Amounts reclassified to net income	26	(202)	102
Other comprehensive income (loss) attributable to Verizon	457	485	(938)
Balance at end of year	(923)	(1,380)	(1,865)
Foreign currency translation adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of year	(636)	(698)	(545)
Other comprehensive income (loss)	(97)	62	(153)
Other comprehensive income (loss) attributable to Verizon	(97)	62	(153)
Balance at end of year	(733)	(636)	(698)
Unrealized gain (loss) on cash flow hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of year	(1,062)	(1,150)	(1,472)
Other comprehensive income (loss)	(16)	3	(174)
Amounts reclassified to net income	97	85	496
Other comprehensive income (loss) attributable to Verizon	81	88	322
Balance at end of year	(981)	(1,062)	(1,150)
Unrealized gain (loss) on fair value hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of year	105	(431)	0
Other comprehensive income (loss)	547	617	(371)
Amounts reclassified to net income	(63)	(81)	(60)
Other comprehensive income (loss) attributable to Verizon	484	536	(431)
Balance at end of year	589	105	(431)
Unrealized gain (loss) on marketable securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of year	(2)	(9)	16
Other comprehensive income (loss)	(3)	5	(25)
Amounts reclassified to net income		2
Other comprehensive income (loss) attributable to Verizon	(3)	7	(25)
Balance at end of year	(5)	(2)	(9)
Defined benefit pension and postretirement plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of year	215	423	1,074
Other comprehensive income (loss)			(317)
Amounts reclassified to net income	(8)	(208)	(334)
Other comprehensive income (loss) attributable to Verizon	(8)	(208)	(651)
Balance at end of year	$ 207	$ 215	$ 423