Guarantees and Contingencies (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2022 USD ($) case
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	$ 1,820
Gowanus Canal Superfund Site
Loss Contingencies [Line Items]
Estimated remediation cost	$ 506