Note 23 - Huntsman Corporation Stockholders' Equity (Details Textual) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended | ||||
|---|---|---|---|---|---|---|
Mar. 31, 2020 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
May 03, 2018 |
Feb. 07, 2018 |
|
| Treasury Stock, Shares, Acquired (in shares) | 5,364,519 | |||||
| Treasury Stock, Value, Acquired, Cost Method | $ 96 | $ 96 | $ 208 | $ 277 | ||
| Share Repurchase Program 2018 [Member] | ||||||
| Stock Repurchase Program, Authorized Amount | $ 950 | $ 950 | ||||
| Share Repurchase Program 2015 [Member] | ||||||
| Stock Repurchase Program, Remaining Authorized Repurchase Amount | $ 50 | |||||
| X | ||||||||||
- Definition Amount of stock repurchase plan authorized. No definition available.
|
| X | ||||||||||
- Definition Amount remaining of a stock repurchase plan authorized. No definition available.
|
| X | ||||||||||
- Definition Number of shares that have been repurchased during the period and are being held in treasury. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|