Financial and Other Derivative Instruments (Netting Offsets Reconciliation to Balance Sheet) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Derivative Assets
Derivative Assets	$ 2,377	$ 1,391
Collateral adjustment	(225)	(90)
Derivative assets, current	352	181
Derivative assets, noncurrent	114	90
Derivative Liabilities
Derivative Liabilities	(2,562)	(1,508)
Collateral adjustment	143	48
Derivative liabilities, current	(453)	(238)
Derivative liabilities, noncurrent	(280)	(192)
Current derivative assets
Derivative Assets
Derivative Assets	1,876	1,035
Counterparty netting	(1,335)	(791)
Collateral adjustment	(189)	(63)
Derivative assets, current	352	181
Noncurrent derivative assets
Derivative Assets
Derivative Assets	501	356
Counterparty netting	(351)	(239)
Collateral adjustment	(36)	(27)
Derivative assets, noncurrent	114	90
Current derivative liabilities
Derivative Liabilities
Derivative Liabilities	(1,868)	(1,037)
Counterparty netting	1,335	791
Collateral adjustment	80	8
Derivative liabilities, current	(453)	(238)
Noncurrent derivative liabilities
Derivative Liabilities
Derivative Liabilities	(694)	(471)
Counterparty netting	351	239
Collateral adjustment	63	40
Derivative liabilities, noncurrent	$ (280)	$ (192)

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