Financial and Other Derivative Instruments ( Netting Offsets of Derivative Assets and Liabilities Reconciliation to the Statements of Financial Position) (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Derivative Assets
Derivative Assets	$ 609	$ 694
Collateral adjustment	(35)	(17)
Total derivatives assets as reported, current	103	162
Total derivatives assets as reported, noncurrent	69	85
Derivative Liabilities
Derivative Liabilities	(505)	(605)
Total derivatives liabilities as reported, current	(48)	(118)
Total derivatives liabilities as reported, noncurrent	(55)	(57)
Current derivative assets
Derivative Assets
Derivative Assets	420	488
Counterparty netting	(300)	(323)
Collateral adjustment	(17)	(3)
Noncurrent derivative assets
Derivative Assets
Derivative Assets	189	206
Counterparty netting	(102)	(107)
Collateral adjustment	(18)	(14)
Current derivative liabilities
Derivative Liabilities
Derivative Liabilities	(348)	(441)
Counterparty netting	300	323
Collateral adjustment	0	0
Noncurrent derivative liabilities
Derivative Liabilities
Derivative Liabilities	(157)	(164)
Counterparty netting	102	107
Collateral adjustment	$ 0	$ 0

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

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