Supplementary Information - Components of Depreciation and Amortization Expense (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting [Abstract]
Depreciation expense relating to fixed assets		$ 1,551	$ 1,445	$ 1,368
Amortization of APS investments		481	410	368
Amortization expense		334	314	301
Amortization of exploration data costs		153	143	110
Total depreciation and amortization expense	[1]	$ 2,519	$ 2,312	$ 2,147

[1] Includes depreciation of fixed assets and amortization of intangible assets, exploration data costs and APS investments.