Suspended Exploratory Well Costs - Schedule Of Changes In Capitalized Exploratory Well Costs (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2025 USD ($) Project
Oil and Gas, Capitalized Exploratory Well Cost [Abstract]
Balance at beginning of period	$ 12,569
Additions to capitalized exploratory well costs pending the determination of proved reserves	4,593
Reclassifications to wells, facilities and equipment based on determination of proved reserves	0
Capitalized exploratory well costs, charged to expense	0
Balance at end of period	17,162
Less exploratory well costs that have been capitalized for a period of one year or less	0
Capitalized exploratory well costs that have been capitalized for a period greater than one year	$ 17,162
Number of projects that have exploratory well costs capitalized for a period greater than one year | Project	2