Commitments and contingencies - Additional Information (Detail) $ in Thousands	1 Months Ended	3 Months Ended
	Feb. 28, 2025 USD ($)	Mar. 31, 2025 USD ($) site	Dec. 31, 2024 USD ($)
Site Contingency [Line Items]
Litigation settlement amount	$ 151,100
Accrual for reasonably estimable environmental remediation and related matters		$ 12,767	$ 69,278
Litigation settlement amount payable		56,100
Litigation settlement interest		500
Litigation settlement from other party		9,600
Aggregate income			$ 31,400
Environmental Remediation Sites NL Named As PRP Or Defendant
Site Contingency [Line Items]
Accrual for reasonably estimable environmental remediation and related matters		$ 13,000
Number of sites associated with remediation and related costs | site		29
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
Site Contingency [Line Items]
Upper end range, estimate costs for remediation and related matters		$ 38,000
Lead Pigment Litigation
Site Contingency [Line Items]
Remaining litigation settlement payment due in first year		16,700
Insurance recoveries		$ 0