Share-Based Compensation Plan - Assumptions (Details) - Stock options	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Huntsman Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield			2.40%	5.60%
Expected volatility			56.90%	57.90%
Risk-free interest rate			2.00%	1.40%
Expected life of stock options granted during the period (in years)			5 years 10 months 24 days	5 years 10 months 24 days
Converted Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield			0.00%	0.00%
Expected volatility			39.60%	39.20%
Risk-free interest rate			1.90%	1.80%
Expected life of stock options granted during the period (in years)			5 years 6 months	4 years 8 months 12 days
Incentive Plan 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	0.00%	0.00%	0.00%
Expected volatility	41.80%	38.80%	41.00%
Risk-free interest rate	2.60%	2.80%	2.00%
Expected life of stock options granted during the period (in years)	6 years	6 years	6 years

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

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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No definition available.

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- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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-Name Accounting Standards Codification
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-Section S99
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-Subparagraph (SAB Topic 14.D.2)
-URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809

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