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Fair Value (Quantitative Information) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Mar. 31, 2024 | Dec. 31, 2023 | Mar. 31, 2023 | Dec. 31, 2022
Fair Value Inputs Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs | $ (175) | $ (290) | $ (175) | $ (290) | $ (175) | $ (220) | $ (67) | $ (31)
Fair Value Derivative Assets Liabilities Measured On Recurring Basis Unobservable Inputs [Abstract] |  |  |  |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings | 3 | 5 | 23 | (2) |  |  |  |
Fair Value Measurements With Unobservable Inputs Reconciliation Recurring Basis Regulatory Assets Liabilities | (13) |  | (13) |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements | (10) | (13) | (8) | (11) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3 |  | 9 |  |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Period Increase (Decrease) | (4) | (3) | 11 | (10) |  |  |  |
Other comprehensive income - Derivative activity [Member] |  |  |  |  |  |  |  |
Fair Value Derivative Assets Liabilities Measured On Recurring Basis Unobservable Inputs [Abstract] |  |  |  |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Other Comprehensive Income (Loss) | 6 | 9 | 39 | (25) |  |  |  |
Interest Rate Contract [Member] |  |  |  |  |  |  |  |
Fair Value Inputs Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs | (2) | (1) | (2) | (1) | (2) | (4) | (5) | 0
Fair Value Derivative Assets Liabilities Measured On Recurring Basis Unobservable Inputs [Abstract] |  |  |  |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings | 0 | 0 | 0 | 0 |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements | 0 | (2) | 0 | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3 |  | 10 |  |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Period Increase (Decrease) | 0 | 0 | 0 | 0 |  |  |  |
Interest Rate Contract [Member] | Other comprehensive income - Derivative activity [Member] |  |  |  |  |  |  |  |
Fair Value Derivative Assets Liabilities Measured On Recurring Basis Unobservable Inputs [Abstract] |  |  |  |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Other Comprehensive Income (Loss) | 0 | 16 | 2 | 0 |  |  |  |
Foreign Exchange Contract [Member] |  |  |  |  |  |  |  |
Fair Value Inputs Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs | 60 | 63 | 60 | 63 | 64 | 59 | 62 | 64
Fair Value Derivative Assets Liabilities Measured On Recurring Basis Unobservable Inputs [Abstract] |  |  |  |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings | 4 | 7 | 14 | 6 |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements | (10) | (9) | (18) | (9) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3 |  | 0 |  |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Period Increase (Decrease) | (3) | 0 | 0 | (1) |  |  |  |
Foreign Exchange Contract [Member] | Other comprehensive income - Derivative activity [Member] |  |  |  |  |  |  |  |
Fair Value Derivative Assets Liabilities Measured On Recurring Basis Unobservable Inputs [Abstract] |  |  |  |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Other Comprehensive Income (Loss) | 2 | 3 | 5 | 2 |  |  |  |
Commodity Contract [Member] |  |  |  |  |  |  |  |
Fair Value Inputs Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs | (71) | (78) | (71) | (78) | $ (79) | $ (110) | $ (69) | $ (47)
Fair Value Derivative Assets Liabilities Measured On Recurring Basis Unobservable Inputs [Abstract] |  |  |  |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings | 0 | (1) | 4 | (1) |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements | (1) | (2) | (2) | (2) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3 |  | (1) |  |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Period Increase (Decrease) | 0 | (2) | 6 | (1) |  |  |  |
Commodity Contract [Member] | Other comprehensive income - Derivative activity [Member] |  |  |  |  |  |  |  |
Fair Value Derivative Assets Liabilities Measured On Recurring Basis Unobservable Inputs [Abstract] |  |  |  |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Other Comprehensive Income (Loss) | $ 4 | $ (10) | $ 32 | $ (27) |  |  |  |
Measurement Input, Entity Credit Risk [Member] | Interest Rate Contract [Member] | Minimum [Member] |  |  |  |  |  |  |  |
Fair Value Inputs Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring |  |  | 0.80% |  |  |  |  |
Measurement Input, Entity Credit Risk [Member] | Interest Rate Contract [Member] | Maximum [Member] |  |  |  |  |  |  |  |
Fair Value Inputs Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring |  |  | 3.10% |  |  |  |  |
Measurement Input, Entity Credit Risk [Member] | Interest Rate Contract [Member] | Weighted Average [Member] |  |  |  |  |  |  |  |
Fair Value Inputs Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring |  |  | 2.20% |  |  |  |  |

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