Investment in TiO2 Manufacturing Joint Venture and Other Assets - Additional Information (Detail) - USD ($)	3 Months Ended						12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Other Assets Non Current [Line Items]
Operating lease expense							$ 5,600,000	$ 5,500,000	$ 7,700,000
Operating lease, right-of-use asset	$ 4,600,000		$ 6,600,000		$ 3,800,000		$ 4,600,000	$ 6,600,000	3,800,000
Weighted average remaining lease term	14 years		15 years				14 years	15 years
Weighted average discount rate associated with leases	5.00%		5.00%				5.00%	5.00%
Operating lease liability	$ 22,500,000						$ 22,500,000
Operating lease not yet commenced, description							At December 31, 2023, we have no significant lease commitments that have not yet commenced.
Infrastructure reimbursement							$ 25,500,000	$ 16,000,000.0	$ 15,300,000
Additional term for redevelopment plan									15 years
City of Henderson Redevelopment Agency | Tax Increment Reimbursement, Quarter One
Other Assets Non Current [Line Items]
Infrastructure reimbursement						$ 6,200,000
City of Henderson Redevelopment Agency | Tax Increment Reimbursement, Quarter Three
Other Assets Non Current [Line Items]
Infrastructure reimbursement		$ 4,800,000		$ 10,000,000.0
City of Henderson Redevelopment Agency | Tax Increment Reimbursement, Quarter Four
Other Assets Non Current [Line Items]
Infrastructure reimbursement	20,400,000		$ 5,200,000		$ 9,100,000
City Of Henderson [Member]
Other Assets Non Current [Line Items]
Annual interest rate							6.00%
OPA | City of Henderson Redevelopment Agency
Other Assets Non Current [Line Items]
Tax increment reimbursement percentage							75.00%
OPA | City of Henderson Redevelopment Agency | OtherIncome
Other Assets Non Current [Line Items]
Infrastructure reimbursement							$ 25,200,000	$ 15,200,000	$ 15,300,000
OPA | Maximum [Member] | City of Henderson Redevelopment Agency
Other Assets Non Current [Line Items]
Reimbursement revenue	209,000,000						209,000,000
Chemicals | Leverkusen TiO2 production facility
Other Assets Non Current [Line Items]
Operating lease liability	$ 7,400,000						$ 7,400,000
Louisiana Pigment Company
Other Assets Non Current [Line Items]
Percentage owned manufacturing joint venture under equity method investment	50.00%						50.00%
Income (loss) from equity investments							$ 0
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%