Property, Plant and Equipment - Components of Property, Plant and Equipment (Detail) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Total — at cost	$ 41,023	$ 36,771
Less: Reserves for depreciation, depletion, amortization and lease impairment	21,102	19,339
Property, Plant and Equipment— Net	19,921	17,432
Exploration and Production
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment— Net	7,797	7,325
Operating Segments | Exploration and Production
Property, Plant and Equipment [Line Items]
Unproved properties	179	103
Proved properties	2,638	2,660
Wells, equipment and related facilities	33,059	29,159
Total — at cost	35,876	31,922
Operating Segments | Midstream
Property, Plant and Equipment [Line Items]
Total — at cost	5,117	4,819
Corporate, Interest and Other
Property, Plant and Equipment [Line Items]
Total — at cost	30	30
Property, Plant and Equipment— Net	$ 5	$ 7