Derivative Assets And Liabilities Table - Fair Value of Derivative Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Total derivatives assets	$ 384	$ 263
Total derivatives liabilities	(305)	(293)
Designated as Hedging Instrument [Member]
Total derivatives assets	40	3
Total derivatives liabilities	(17)	(7)
Not Designated as Hedging Instrument [Member]
Total derivatives assets	344	260
Total derivatives liabilities	(288)	(286)
Commodity Derivatives [Member] \| Not Designated as Hedging Instrument [Member]
Total derivatives assets	73	51
Total derivatives liabilities	(68)	(57)
Commodity Derivatives (Margin Deposits) [Member] \| Designated as Hedging Instrument [Member]
Total derivatives assets	40	3
Total derivatives liabilities	(17)	(7)
Commodity Derivatives (Margin Deposits) [Member] \| Not Designated as Hedging Instrument [Member]
Total derivatives assets	271	209
Total derivatives liabilities	$ (220)	$ (229)

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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