Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2019	Mar. 10, 2020	Jun. 28, 2019
Cover page.
Entity Central Index Key	0001705682
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2019
Document Transition Report	false
Entity File Number	001-38176
Entity Registrant Name	Venator Materials PLC
Entity Incorporation, State or Country Code	X0
Entity Tax Identification Number	98-1373159
Entity Address, Address Line One	Titanium House
Entity Address, Address Line Two	Hanzard Drive
Entity Address, Address Line Three	Wynyard Park
Entity Address, City or Town	Stockton-On-Tees
Entity Address, Postal Zip Code	TS22 5FD
Entity Address, Country	GB
Country Region	44
City Area Code	1740
Local Phone Number	608 001
Title of 12(b) Security	Ordinary Shares, $0.001 par value per share
Trading Symbol	VNTR
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 287,092,796
Entity Common Stock, Shares Outstanding		106,735,634
Documents Incorporated by Reference	Portions of Registrant’s Definitive Proxy Statement for the 2020 Annual General Meeting of Shareholders may be incorporated by reference into Part III of this Form 10-K. Alternatively, we may include such information in an amendment to this annual report on Form 10-K.