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Investment in TiO2 Manufacturing Joint Venture and Other Assets - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended					12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Other Assets Non Current [Line Items]
Operating lease expense						$ 5.5	$ 7.7	$ 7.6
Operating lease, right-of-use asset	$ 6.6			$ 3.8		$ 6.6	$ 3.8	2.5
Weighted average remaining lease term	15 years			17 years		15 years	17 years
Weighted average discount rate associated with leases	5.00%			5.00%		5.00%	5.00%
Operating lease liability	$ 21.2					$ 21.2
Operating lease not yet commenced, description						At December 31, 2022, we have no significant lease commitments that have not yet commenced.
Infrastructure reimbursement						$ 16.0	$ 15.3	19.7
Additional term for redevelopment plan							15 years
City Of Henderson [Member]
Other Assets Non Current [Line Items]
Infrastructure reimbursement	5.2	$ 10.0	$ 0.8	$ 9.1	$ 6.2	$ 15.2	$ 15.3	$ 19.1
Annual interest rate						6.00%
OPA \| City of Henderson Redevelopment Agency
Other Assets Non Current [Line Items]
Tax increment reimbursement percentage						75.00%
OPA \| Maximum [Member] \| City of Henderson Redevelopment Agency
Other Assets Non Current [Line Items]
Reimbursement revenue	209.0					$ 209.0
Chemicals \| Leverkusen TiO2 production facility
Other Assets Non Current [Line Items]
Operating lease liability	$ 7.2					$ 7.2
Louisiana Pigment Company
Other Assets Non Current [Line Items]
Percentage owned manufacturing joint venture under equity method investment	50.00%					50.00%
Louisiana Pigment Company \| Chemicals
Other Assets Non Current [Line Items]
Percentage owned manufacturing joint venture under equity method investment	50.00%					50.00%
Venator Materials PLC \| Tioxide Group \| Louisiana Pigment Company
Other Assets Non Current [Line Items]
Parent company ownership interest	50.00%					50.00%
Venator Materials PLC \| Venator Investments LLC
Other Assets Non Current [Line Items]
Parent company ownership interest	100.00%					100.00%