Leases - Schedule of Changes in Operating Lease Liabilities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Operating Lease, Liability [Abstract]
Lease liabilities, beginning balance	$ 210	$ 306
Liabilities assumed in exchange for new right-of-use assets (a)	100	33
Contract modifications (b)	2	27
Liabilities settled	(158)	(163)
Accretion of discount on operating leases (c)	7	7
Lease liabilities, ending balance	364	210
Finance Lease Liability [Abstract]
Lease liabilities, beginning balance	556	572
Liabilities assumed in exchange for new right-of-use assets (a)	0	0
Contract modifications (b)	0	0
Liabilities settled	(17)	(16)
Lease liabilities, ending balance	$ 539	$ 556
Operating lease, weighted average discount rate, percent	1.80%	2.50%
Finance lease, weighted average discount rate, percent	3.00%	3.00%
Operating lease, weighted average remaining lease term	6 years	3 years
Finance lease, weighted average remaining lease term	18 years	19 years
Parsley Acquisition
Operating Lease, Liability [Abstract]
Liabilities assumed in exchange for new right-of-use assets (a)	$ 201	$ 0
Finance Lease Liability [Abstract]
Liabilities assumed in exchange for new right-of-use assets (a)	0	0
DoublePoint Acquisition
Operating Lease, Liability [Abstract]
Liabilities assumed in exchange for new right-of-use assets (a)	2	0
Finance Lease Liability [Abstract]
Liabilities assumed in exchange for new right-of-use assets (a)	$ 0	$ 0