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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 |
--- | --- | --- | ---
Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Other Assets Non Current [Line Items] |  |  |  |
Percentage owned manufacturing joint venture under equity method investment |  | 50.00% |  |
Contract related intangible asset impairment | $ 5.1 |  | $ 5.1 |
Real Estate Management And Development | City Of Henderson |  |  |  |
Other Assets Non Current [Line Items] |  |  |  |
Delivery contract extended period |  | 25 years |  |
Water delivery contract revenue, percentage |  | 70.00% |  |
Real Estate Management And Development | Customer Relationships |  |  |  |
Other Assets Non Current [Line Items] |  |  |  |
Indefinite-lived intangible asset |  |  |  | $ 5.1
Contract related intangible asset impairment | $ 5.1 |  | $ 5.1 |
LPC | Huntsman P&A Investments LLC |  |  |  |
Other Assets Non Current [Line Items] |  |  |  |
Percentage owned manufacturing joint venture under equity method investment |  | 50.00% |  |
LPC | Chemicals |  |  |  |
Other Assets Non Current [Line Items] |  |  |  |
Percentage owned manufacturing joint venture under equity method investment |  | 50.00% |  |
Venator Materials PLC | Tioxide Group | Huntsman P&A Investments LLC |  |  |  |
Other Assets Non Current [Line Items] |  |  |  |
Parent company ownership interest |  | 100.00% |  |
LPC |  |  |  |
Other Assets Non Current [Line Items] |  |  |  |
Purchase of TiO2 from the plant |  |  | 52.00% |

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