The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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Other assets non current.

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Percentage of product purchased.

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Water delivery contract revenue percentage.

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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%