Supplemental Information on Oil And Gas Producing Activities (Unaudited) - Summary of Capitalized Costs, Along with the related Accumulated Depreciation and Allowances (Parenthetical) (Detail) - IFRS 16 [member] - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disclosure of information about consolidated entities [line items]
Upstream wells related equipment contracts comprised in right-of-use assets	$ 740	$ 696	$ 524
Upstream Contracts comprised in right-of-use assets [member]
Disclosure of information about consolidated entities [line items]
Upstream support equipment and facilities contracts comprised in right-of-use assets	602	521	351
Accumulated depreciation of all Upstream contracts comprised in right-of-use assets	$ (895)	$ (762)	$ (566)

Supplemental Information on Oil And Gas Producing Activities (Unaudited) - Summary of Capitalized Costs, Along with the related Accumulated Depreciation and Allowances (Parenthetical) (Detail) - IFRS 16 [member] - USD ($)
$ in Millions

Dec. 31, 2024

Dec. 31, 2023

Dec. 31, 2022

Disclosure of information about consolidated entities [line items]

Upstream wells related equipment contracts comprised in right-of-use assets

$ 740

$ 696

$ 524

Upstream Contracts comprised in right-of-use assets [member]

Disclosure of information about consolidated entities [line items]

Upstream support equipment and facilities contracts comprised in right-of-use assets

602

521

351

Accumulated depreciation of all Upstream contracts comprised in right-of-use assets

$ (895)

$ (762)

$ (566)