| Cover | Jun. 30, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jun. 30, 2021 |
| Entity File Number | 001-38176 |
| Entity Registrant Name | Venator Materials PLC |
| Entity Central Index Key | 0001705682 |
| Entity Tax Identification Number | 98-1373159 |
| Entity Incorporation, State or Country Code | X0 |
| 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, Country | GB |
| Entity Address, Postal Zip Code | TS22 5FD |
| Country Region | 44 |
| City Area Code | 1740 |
| Local Phone Number | 608 001 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Ordinary Shares, par value $0.001 per share |
| Trading Symbol | VNTR |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
