Derivative and Hedging Activities - Schedule of Effect of Derivative Instruments, Condensed Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Derivatives, Fair Value [Line Items]
Short-term derivative assets	$ 361	$ 34
Long-term derivative assets	30	47
Short-term derivative liability	(20)	(432)
Long-term derivative liability	(40)	(174)
Not Designated as Hedging Instrument | Commodity Contract
Derivatives, Fair Value [Line Items]
Total derivatives	331	(525)
Derivative asset (liability) fair value, net asset (liability), netted	0	0
Short-term derivative assets	361	34
Long-term derivative assets	30	47
Short-term derivative liability	(20)	(432)
Long-term derivative liability	(40)	(174)
Total derivatives	331	(525)
Not Designated as Hedging Instrument | Commodity Contract | Short-term derivative asset
Derivatives, Fair Value [Line Items]
Derivative asset, fair value, gross asset	434	200
Derivative asset, fair value, gross liability, netted	(73)	(166)
Not Designated as Hedging Instrument | Commodity Contract | Long-term derivative asset
Derivatives, Fair Value [Line Items]
Derivative asset, fair value, gross asset	60	87
Derivative asset, fair value, gross liability, netted	(30)	(40)
Not Designated as Hedging Instrument | Commodity Contract | Short-term derivative liability
Derivatives, Fair Value [Line Items]
Derivative liability, fair value, gross liability	(93)	(598)
Derivative liability, fair value, gross asset, netted	73	166
Not Designated as Hedging Instrument | Commodity Contract | Long-term derivative liability
Derivatives, Fair Value [Line Items]
Derivative liability, fair value, gross liability	(70)	(214)
Derivative liability, fair value, gross asset, netted	$ 30	$ 40