Commitments and contingencies - Additional Information (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2022 USD ($) case site	Dec. 31, 2021 USD ($)
Commitments and Contingent Liabilities [Line Items]
Accrual for reasonably estimable environmental remediation and related matters	$ 93,036	$ 92,940
Environmental Remediation Sites NL Named As PRP Or Defendant
Commitments and Contingent Liabilities [Line Items]
Accrual for reasonably estimable environmental remediation and related matters	$ 93,000
Number of sites associated with remediation and related costs | site	33
Number of sites currently not able to reasonably estimate a range of costs | site	5
Maximum | Environmental Remediation Sites NL Named As PRP Or Defendant
Commitments and Contingent Liabilities [Line Items]
Upper end range, estimate costs for remediation and related matters	$ 118,000
Lead Pigment Litigation
Commitments and Contingent Liabilities [Line Items]
Period by which loss contingency claims settled and dismissed	30 years
Remaining litigation settlement payment due in first year	$ 12,000
Remaining litigation settlement payment due in second year	12,000
Remaining litigation settlement payment due in third year	12,000
Remaining litigation settlement payment due in forth year	$ 16,700
Lead Pigment Litigation | Minimum
Commitments and Contingent Liabilities [Line Items]
Number of cases settled and dismissed and found not liable | case	100