Debt - Repayments, Redemptions and Repurchases (Details) - 3 months ended Mar. 31, 2025 $ in Millions, $ in Millions	USD ($)	AUD ($)	USD ($)
Debt Instrument [Line Items]
Amount Paid	$ 1,978
Verizon 4.050% Notes Due 2025
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage		4.05%	4.05%
Principal Repaid/ Redeemed/ Repurchased		$ 450
Amount Paid	365
Verizon 3.376% Notes Due 2025
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage		3.376%	3.376%
Principal Repaid/ Redeemed/ Repurchased			$ 793
Amount Paid	806
Verizon floating rate notes due 2025
Debt Instrument [Line Items]
Principal Repaid/ Redeemed/ Repurchased			487
Amount Paid	490
Open market repurchases of various Verizon notes
Debt Instrument [Line Items]
Principal Repaid/ Redeemed/ Repurchased			$ 410
Amount Paid	$ 317