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Debt - Issuances and Commercial Paper Program (Details) - USD ($)	1 Months Ended	3 Months Ended
	Apr. 25, 2025	Mar. 31, 2025	Mar. 31, 2024
Pension
Short-term Debt [Line Items]
Employer discretionary contribution amount		$ 0	$ 365,000,000
Subsequent Event \| Pension
Short-term Debt [Line Items]
Employer discretionary contribution amount	$ 563,000,000
Verizon 5.250% Notes Due 2035 \| Subsequent Event
Short-term Debt [Line Items]
Debt instrument, face amount	$ 2,300,000,000
Debt instrument, interest rate, stated percentage	5.25%
Commercial Paper
Short-term Debt [Line Items]
Commercial paper issued		4,800,000,000
Repayments of short-term debt		4,800,000,000
Commercial paper		$ 0