Derivative and Hedging Activities - Oil, Natural Gas and NGL Revenues (Details) - USD ($) $ in Millions	1 Months Ended	11 Months Ended	12 Months Ended
	Feb. 09, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Revenues	$ 260	$ 5,549	$ 5,240	$ 8,532
Not designated as hedging instrument | Oil, natural gas and NGL sales
Derivative [Line Items]
Losses on terminated cash flow hedges	(3)	0	(33)	(35)
Revenues	(382)		596	5
Not designated as hedging instrument | Oil, natural gas and NGL sales | Commodity contracts
Derivative [Line Items]
Gains (losses) on undesignated oil and natural gas derivatives	$ (379)	$ (1,127)	$ 629	$ 40