Investment in TiO2 Manufacturing Joint Venture and Other Assets - Schedule of Maturities of Operating Lease Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Gross amounts due each year:
2023	$ 4.5
2024	3.3
2025	2.7
2026	2.4
2027	1.5
2028 and thereafter	17.0
Total remaining lease payments	31.4
Less imputed interest	10.2
Total lease obligations	21.2
Less current obligations	$ 3.8	$ 3.7
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued liabilities	Accrued liabilities
Operating lease liabilities	$ 17.4	$ 15.8
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other liabilities	Other liabilities