Investment in TiO2 Manufacturing Joint Venture and Other Assets - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Other Assets Non Current [Line Items]
Percentage owned manufacturing joint venture under equity method investment	50.00%		50.00%
Operating lease expense			$ 7.7	$ 7.6
Operating lease, right-of-use asset	$ 3.8		$ 3.8	$ 2.5
Weighted average remaining lease term	17 years		17 years	15 years
Weighted average discount rate associated with leases	5.00%		5.00%	4.80%
Operating lease liability	$ 19.5		$ 19.5
Operating Lease Liability Statement Of Financial Position Extensible List	Accrued Liabilities Current, Other Liabilities Noncurrent		Accrued Liabilities Current, Other Liabilities Noncurrent
Operating lease not yet commenced, description			At December 31, 2021, we have no significant lease commitments that have not yet commenced.
Infrastructure reimbursement			$ 15.3	$ 19.7	$ 9.2
Additional term for redevelopment plan			15 years
City Of Henderson
Other Assets Non Current [Line Items]
Infrastructure reimbursement	$ 9.1	$ 6.2	$ 15.3	$ 19.1	$ 8.8
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 | 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	$ 6.9		$ 6.9
LPC | 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 | LPC
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%