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Fair Value Measurements and Financial Instruments - Derivative Activity (Details) - Designated as Hedging Instrument - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Interest rate swaps | Fair Value Hedges |  |
Derivatives, Fair Value [Line Items] |  |
Notional value entered into | $ 0 | $ 7,155
Notional value settled | 0 | 863
Cash received (paid) for settlement of derivatives | 0 | 40
Interest rate swaps | Fair Value Hedges | Interest Expense |  |
Derivatives, Fair Value [Line Items] |  |
Pre-tax gain recognized in Interest expense | 1 | 2
Cross currency swaps | Fair Value Hedges |  |
Derivatives, Fair Value [Line Items] |  |
Notional value entered into | 0 | 2,474
Notional value settled | 1,450 | 0
Exchange gains and losses from the conversion of foreign currency denominated as debt | 1,119 | (1,373)
Excluded components | 826 | (498)
Cash received (paid) for settlement of derivatives | (67) | 0
Cross currency swaps | Fair Value Hedges | Verizon Stated And Floating Rate Notes And Bonds |  |
Derivatives, Fair Value [Line Items] |  |
Exchange gains and losses from the conversion of foreign currency denominated as debt | (1,119) | 1,373
Cross currency swaps | Fair Value Hedges | Interest Expense |  |
Derivatives, Fair Value [Line Items] |  |
Excluded components | 109 | 81
Cross currency swaps | Cash Flow Hedges |  |
Derivatives, Fair Value [Line Items] |  |
Pre-tax gain recognized in Other comprehensive income (loss) |  | (430)
Forward starting interest rate swaps | Cash Flow Hedges |  |
Derivatives, Fair Value [Line Items] |  |
Notional value entered into | 0 | 0
Notional value settled | 0 | 1,000
Pre-tax gain recognized in Other comprehensive income (loss) | 0 | 196
Cash received (paid) for settlement of derivatives | 0 | (107)
Treasury rate locks | Cash Flow Hedges |  |
Derivatives, Fair Value [Line Items] |  |
Notional value entered into | 500 | 0
Notional value settled | 500 | 0
Pre-tax gain recognized in Other comprehensive income (loss) | 5 | 0
Cash received (paid) for settlement of derivatives | $ 5 | $ 0

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