Derivative Assets And Liabilities Table - Gross FV and Netting Offset (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 488	$ 272
Derivative Liability, Fair Value, Gross Liability	(525)	(598)
Payments on margin deposit	0	0
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	0	0
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	189	79
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	226	405
Derivative assets (liabilities)
Derivatives, Fair Value [Line Items]
Counterparty netting	(89)	(43)
Counterparty netting	89	43
Other current assets (liabilities)
Derivatives, Fair Value [Line Items]
Counterparty netting	(210)	(150)
Counterparty netting	210	150
Without offsetting agreements [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	0	0
Derivative Liability, Fair Value, Gross Liability	(144)	(387)
OTC Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	146	53
Derivative Liability, Fair Value, Gross Liability	(102)	(52)
Broker cleared derivative contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	342	219
Derivative Liability, Fair Value, Gross Liability	$ (279)	$ (159)

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