Guarantees and Contingencies (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2024 USD ($) claim case
MTBE Cases
Loss Contingencies [Line Items]
Total number of remaining active cases filed | case	2
Gowanus Canal Superfund Site
Loss Contingencies [Line Items]
Estimated remediation cost | $	$ 506
Post-production Deductions from Royalty and Working Interest Payments
Loss Contingencies [Line Items]
Total number of remaining active cases filed | claim	6