Accounting for Derivative Instruments and Hedging Activities - Pre-tax Effects of Economic Hedges not Designated as Cash Flow Hedges (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Unrealized Mark To Market Results [Abstract]
Reversal of previously recognized unrealized losses/(gains) on settled positions related to economic hedges(a)	$ 106	$ (1,734)	$ (1,232)
Reversal of acquired loss positions related to economic hedges	5	20	2
Net unrealized gains/(losses) on open positions related to economic hedges	(95)	1,149	(2,478)
Total unrealized mark-to-market gains/(losses) for economic hedging activities	206	(2,863)	1,248
Reversal of previously recognized unrealized (gains)/losses on settled positions related to trading activity	(1)	13	13
Net unrealized gains/(losses) on open positions related to trading activity	2	25	(17)
Total unrealized mark-to-market gains/(losses) for trading activity	1	38	(4)
Total unrealized gains/(losses) - commodities and foreign exchange	207	(2,825)	1,244
Credit Risk Related Contingent Features [Abstract]
Collateral required contracts with credit rating contingent features in a net liability position	54
Additional collateral required	10
Adequate Assurance Clauses
Credit Risk Related Contingent Features [Abstract]
Collateral required for contracts in net liability positions that have adequate assurance clauses	589
Interest rate contracts
Unrealized Mark To Market Results [Abstract]
Total impact to statement of operations	3	4	0
Commodity contracts \| Operating revenue
Unrealized Mark To Market Results [Abstract]
Total unrealized gains/(losses) - commodities and foreign exchange	(2)	182	(87)
Commodity contracts \| Cost of operations
Unrealized Mark To Market Results [Abstract]
Total unrealized gains/(losses) - commodities and foreign exchange	186	(2,988)	1,315
Foreign exchange contract \| Cost of operations
Unrealized Mark To Market Results [Abstract]
Total unrealized gains/(losses) - commodities and foreign exchange	23	(19)	16
Commodity and Foreign Exchange Contracts
Unrealized Mark To Market Results [Abstract]
Total unrealized gains/(losses) - commodities and foreign exchange	207	(2,825)	1,244
Derivative Contract-NPNS
Unrealized Mark To Market Results [Abstract]
Reversal of previously recognized unrealized losses/(gains) on settled positions related to economic hedges(a)	37
Consumer Financing Program
Unrealized Mark To Market Results [Abstract]
Total impact to statement of operations	$ (14)	$ (16)	$ 0

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Amount reversed into entity's statement of operations for previously recognized unrealized (gains) losses on settled positions related to acquired economic hedges.

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Unrealized Gain (Loss) on Derivatives, Mark To Market, Economic Hedging Activities

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Unrealized Gain (Loss) on Derivatives, Mark To Market, Trading Activities

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The aggregate fair value of additional assets that would be required to be posted as collateral for derivative instruments with credit-risk-related contingent features if the credit-risk-related contingent features were triggered at the end of the reporting period.

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The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features.

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Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

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The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument.

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

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