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Revenues and Contract Costs - Schedule of Receivables from Contracts with Customers (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Revenue from Contract with Customer [Abstract]
Accounts Receivable	$ 9,109	$ 9,225
Device payment plan agreement receivables	$ 19,927	$ 19,766

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Name:	us-gaap_RevenueFromContractWithCustomerAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
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Accounts Receivable From Contract With Customer

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Namespace Prefix:	vz_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

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Financing Receivable From Contract With Customer

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Name:	vz_FinancingReceivableFromContractWithCustomer
Namespace Prefix:	vz_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant