Financial and Other Derivative Instruments (Netting Offsets Reconciliation to Balance Sheet) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Derivative Assets
Derivative Assets	$ 968	$ 1,922
Collateral adjustment	0	(90)
Derivative assets, current	228	328
Derivative assets, noncurrent	81	105
Derivative Liabilities
Derivative Liabilities	(970)	(2,169)
Collateral adjustment	12	113
Derivative liabilities, current	(145)	(342)
Derivative liabilities, noncurrent	(154)	(315)
Current derivative assets
Derivative Assets
Derivative Assets	733	1,517
Counterparty netting	(505)	(1,127)
Collateral adjustment	0	(62)
Noncurrent derivative assets
Derivative Assets
Derivative Assets	235	405
Counterparty netting	(154)	(272)
Collateral adjustment	0	(28)
Current derivative liabilities
Derivative Liabilities
Derivative Liabilities	(657)	(1,535)
Counterparty netting	505	1,127
Collateral adjustment	7	66
Noncurrent derivative liabilities
Derivative Liabilities
Derivative Liabilities	(313)	(634)
Counterparty netting	154	272
Collateral adjustment	$ 5	$ 47

Amount of obligation to return cash collateral under master netting arrangements offset against derivative assets.

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