Financial Risk Management Activities - Schedule of Reconciliation for Derivative Activity Included in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Derivative Instruments and Hedging Activities Disclosures [Line Items]
(Gain) Loss Reclassified into Income, pre-tax	$ 5	$ 307	$ 49
Gain (Loss) Recognized in Accumulated Other Comprehensive Income (Loss), Net of Tax	43	146	(230)
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	3	225	30
Cash Flow Hedges [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Pre-Tax Balance at Beginning of Period	4	(4)
Gain (Loss) Recognized in Accumulated Other Comprehensive Income (Loss), pre-tax	59	13
(Gain) Loss Reclassified into Income, pre-tax	(13)	(5)
Pre-Tax Balance at End of Period	50	4	(4)
After-Tax Balance at Beginning of Period	3	(3)
Gain (Loss) Recognized in Accumulated Other Comprehensive Income (Loss), Net of Tax	42	9	0
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	(9)	(3)	3
After-Tax Balance at End of Period	$ 36	$ 3	$ (3)