Financial and Other Derivative Instruments (Netting Offsets Reconciliation to Balance Sheet) (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Derivative Assets
Derivative Assets	$ 891	$ 1,197
Collateral adjustment	(2)	0
Derivative assets, current	191	297
Derivative assets, noncurrent	57	109
Derivative Liabilities
Derivative Liabilities	(935)	(1,172)
Collateral adjustment	49	72
Derivative liabilities, current	(126)	(177)
Derivative liabilities, noncurrent	(119)	(132)
Current derivative assets
Derivative Assets
Derivative Assets	658	910
Counterparty netting	(467)	(613)
Collateral adjustment	0	0
Noncurrent derivative assets
Derivative Assets
Derivative Assets	233	287
Counterparty netting	(174)	(178)
Collateral adjustment	(2)	0
Current derivative liabilities
Derivative Liabilities
Derivative Liabilities	(642)	(847)
Counterparty netting	467	613
Collateral adjustment	49	57
Noncurrent derivative liabilities
Derivative Liabilities
Derivative Liabilities	(293)	(325)
Counterparty netting	174	178
Collateral adjustment	$ 0	$ 15

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