Fair Value of Financial Instruments Unobservable Input Reconciliation (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance as of the beginning of the period	$ 43	$ 28	$ 45	$ 32
Net realized and unrealized (gains)/losses	2	110	0	99
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers into Level 3		0		7
Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3	0
Transfers out of Level 3 to Level 2			0
Balance as of the end of the period	45	138	$ 45	$ 138
Gain (Loss) from Price Risk Management Activity	$ 2	$ 0