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Pension Plans - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Retirement age of service	65 years
Annual cash contribution	$ 1.1
Percentage change in discount rate	0.25%
Amount change in PBO due to discount rate	$ 26.0
Amount change in net pension credit due to discount rate	0.2
Amount change in PBO due to change price inflation	$ 19.0
Percentage change in price inflation	0.25%
Amount change in net pension credit due price inflation	$ 0.2
Maximum percentage of Plan's assets invested in individual company's investment funds	5.00%
Accumulated benefit obligation for the Plan	$ 710.2	$ 739.7
Amount of contributions to defined contribution schemes	7.9	$ 8.5
Huntsman [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plans liability	$ 4.1
United Kingdom Government Gilts [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of asset allocation, actual	18.00%	16.00%
Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	65.00%
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	35.00%
German Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Amount of unrecognized actuarial net losses, net of tax	$ 2.5
Amount tax on unrecognized actuarial net losses	$ 0.7
United Kingdom Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	100.00%	100.00%	100.00%
United Kingdom Plan [Member] | Index-Tracking Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of asset allocation, actual	37.00%	35.00%
United Kingdom Plan [Member] | Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	66.00%	62.00%	63.00%
United Kingdom Plan [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	25.00%	34.00%	32.00%

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Amount of contributions to defined contribution schemes.

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Definite benefit plan employee retirement age.

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Definite benefit plan expected change in discount rate.

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Definite benefit plan expected change project benefit obligation due to discount rate change.

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Definite benefit plan expected change project benefit obligation due to inflation rate change.

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Definite benefit plan expected net pension cost due change in discount rate.

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Definite benefit plan expected net pension cost due change in inflation rate.

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Maximum Percent of investment in individual securities.

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This represents the entire liability recognized in the balance sheet that is associated with the defined benefit pension plans.

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-Name Accounting Standards Codification
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For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same.

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The interest rate used to adjust for the time value of money for the plan.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Target allocation of investments of this type to total plan assets presented on a weighted average basis.

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Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held.

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Amount after tax of (increase) decrease in the value of the projected benefit obligation related to a change in an actuarial assumption and increase (decrease) in the value of the plan assets resulting from experience different from that assumed, that has not been recognized in net periodic benefit (cost) credit.

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Amount of tax expense (benefit) related to (increase) decrease in the value of the projected benefit obligation related to a change in an actuarial assumption and increase (decrease) in the value of the plan assets resulting from experience different from that assumed, that has not been recognized in net periodic benefit (cost) credit.

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