Guarantees, Contingencies and Commitments - Additional Information (Detail) $ in Millions		1 Months Ended	12 Months Ended
	Mar. 04, 2016 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2021 USD ($) u_hesLease case
Loss Contingencies [Line Items]
Number of offshore Gulf of Mexico leases abandoned | u_hesLease			7
Loss contingency charge, pre-tax			$ 147
Loss contingency charge, after tax			$ 147
West Delta 79/86 Field
Loss Contingencies [Line Items]
Number of offshore Gulf of Mexico leases abandoned | u_hesLease			7
Number of leases received decommissioning orders | u_hesLease			6
MTBE Cases
Loss Contingencies [Line Items]
Total number of remaining active cases filed | case			2
Lower Passaic River
Loss Contingencies [Line Items]
Estimated remediation cost	$ 1,380
Gowanus Canal Superfund Site
Loss Contingencies [Line Items]
Estimated remediation cost		$ 506