Annual report pursuant to Section 13 and 15(d)

Note 18 - Employee Benefit Plans - Amounts Recognized and Amounts Expected to Be Recognized in Other Comprehensive Income (Loss) (Details)

v3.22.0.1
Note 18 - Employee Benefit Plans - Amounts Recognized and Amounts Expected to Be Recognized in Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
UNITED STATES | Pension Plan [Member]    
Amounts recognized in accumulated other comprehensive loss:    
Net actuarial loss $ 255 $ 363
Prior service credit (8) (9)
Total 247 354
UNITED STATES | Pension Plan [Member] | Huntsman International LLC [Member]    
Amounts recognized in accumulated other comprehensive loss:    
Net actuarial loss 255 363
Prior service credit (8) (9)
Total 247 354
UNITED STATES | Other Postretirement Benefits Plan [Member]    
Amounts recognized in accumulated other comprehensive loss:    
Net actuarial loss 23 26
Prior service credit (21) (25)
Total 2 1
UNITED STATES | Other Postretirement Benefits Plan [Member] | Huntsman International LLC [Member]    
Amounts recognized in accumulated other comprehensive loss:    
Net actuarial loss 23 26
Prior service credit (21) (25)
Total 2 1
Foreign Plan [Member] | Pension Plan [Member]    
Amounts recognized in accumulated other comprehensive loss:    
Net actuarial loss 662 874
Prior service credit (20) (27)
Total 642 847
Foreign Plan [Member] | Pension Plan [Member] | Huntsman International LLC [Member]    
Amounts recognized in accumulated other comprehensive loss:    
Net actuarial loss 662 877
Prior service credit (20) (27)
Total 642 850
Foreign Plan [Member] | Other Postretirement Benefits Plan [Member]    
Amounts recognized in accumulated other comprehensive loss:    
Net actuarial loss 0 0
Prior service credit 0 0
Total 0 0
Foreign Plan [Member] | Other Postretirement Benefits Plan [Member] | Huntsman International LLC [Member]    
Amounts recognized in accumulated other comprehensive loss:    
Net actuarial loss 0 0
Prior service credit 0 0
Total $ 0 $ 0