Commitments and Contingencies - Additional Information (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($)
Loss Contingencies [Line Items]
Record of decision description	In 2017, the EPA issued its Record of Decision (“ROD”) for the site, which provides for a combination of dredging, capping, and enhanced natural recovery that would take approximately thirteen years to construct plus additional time for monitored natural recovery
Estimated present value cost for construction and recovery	$ 1,050
Remediation plan description	An allocation of costs of remediation among the various PRPs is not anticipated until 2024 or 2025. All dates included herein are subject to change.
Percentage of acreage on remediation	100.00%