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Annual report pursuant to Section 13 and 15(d)

EMPLOYEE BENEFIT PLANS - AMOUNTS RECOGNIZED IN NET PERIODIC BENEFIT COST AND OTHER COMPREHENSIVE INCOME (LOSS) (Details)

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EMPLOYEE BENEFIT PLANS - AMOUNTS RECOGNIZED IN NET PERIODIC BENEFIT COST AND OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Defined Benefit Plans | United States Ìý Ìý Ìý
Amounts recognized in net periodic benefit cost and other comprehensive income (loss) Ìý Ìý Ìý
Current year actuarial loss (gain) $ 19 $ 18 $ 42
Amortization of actuarial loss (26) (34) (30)
Amortization of prior service credit 2 2 2
Settlements Ìý (2) Ìý
Total recognized in other comprehensive income (loss) (5) (16) 14
Amounts related to discontinued operations 9 (4) Ìý
Total recognized in other comprehensive income (loss) in continuing operations 4 (20) 14
Net periodic benefit cost 29 39 38
Total recognized in net periodic benefit cost and other comprehensive income (loss) $ 33 $ 19 $ 52
Projected benefit obligation: Ìý Ìý Ìý
Discount rate (as a percent) 3.59% 4.39% 3.74%
Rate of compensation increase (as a percent) 4.09% 4.10% 4.10%
Net periodic pension cost: Ìý Ìý Ìý
Discount rate (as a percent) 4.39% 3.74% 4.24%
Rate of compensation increase (as a percent) 4.07% 4.10% 4.14%
Expected return on plan assets (as a percent) 7.52% 7.52% 7.53%
Defined Benefit Plans | United States | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES Ìý Ìý Ìý
Amounts recognized in net periodic benefit cost and other comprehensive income (loss) Ìý Ìý Ìý
Current year actuarial loss (gain) $ 19 $ 18 $ 42
Amortization of actuarial loss (26) (34) (30)
Amortization of prior service credit 2 2 2
Settlements Ìý (2) Ìý
Total recognized in other comprehensive income (loss) (5) (16) 14
Amounts related to discontinued operations 9 (4) Ìý
Total recognized in other comprehensive income (loss) in continuing operations 4 (20) 14
Net periodic benefit cost 29 39 38
Total recognized in net periodic benefit cost and other comprehensive income (loss) 33 19 52
Defined Benefit Plans | Non-U.S. Defined Benefit Plans Ìý Ìý Ìý
Amounts recognized in net periodic benefit cost and other comprehensive income (loss) Ìý Ìý Ìý
Current year actuarial loss (gain) 101 117 (42)
Amortization of actuarial loss (45) (38) (61)
Current year prior service (credit) cost (10) 4 (2)
Amortization of prior service credit 4 5 4
Settlements 1 Ìý Ìý
Curtailment (gain)/loss Ìý Ìý 3
Total recognized in other comprehensive income (loss) 51 88 (98)
Amounts related to discontinued operations Ìý Ìý 37
Total recognized in other comprehensive income (loss) in continuing operations 51 88 (61)
Net periodic benefit cost 7 (7) 9
Total recognized in net periodic benefit cost and other comprehensive income (loss) $ 58 $ 81 $ (52)
Projected benefit obligation: Ìý Ìý Ìý
Discount rate (as a percent) 1.07% 1.75% 1.65%
Rate of compensation increase (as a percent) 2.65% 2.95% 3.38%
Net periodic pension cost: Ìý Ìý Ìý
Discount rate (as a percent) 1.75% 1.65% 1.82%
Rate of compensation increase (as a percent) 2.64% 3.38% 3.51%
Expected return on plan assets (as a percent) 5.89% 5.88% 5.68%
Defined Benefit Plans | Non-U.S. Defined Benefit Plans | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES Ìý Ìý Ìý
Amounts recognized in net periodic benefit cost and other comprehensive income (loss) Ìý Ìý Ìý
Current year actuarial loss (gain) $ 101 $ 117 $ (42)
Amortization of actuarial loss (48) (41) (68)
Current year prior service (credit) cost (10) 4 (2)
Amortization of prior service credit 4 5 4
Settlements 1 Ìý Ìý
Curtailment (gain)/loss Ìý Ìý 3
Total recognized in other comprehensive income (loss) 48 85 (105)
Amounts related to discontinued operations Ìý Ìý 42
Total recognized in other comprehensive income (loss) in continuing operations 48 85 (63)
Net periodic benefit cost 10 (4) 12
Total recognized in net periodic benefit cost and other comprehensive income (loss) 58 81 (51)
Other Postretirement Benefit Plans | United States Ìý Ìý Ìý
Amounts recognized in net periodic benefit cost and other comprehensive income (loss) Ìý Ìý Ìý
Current year actuarial loss (gain) Ìý (10) (12)
Amortization of actuarial loss (1) (2) (3)
Amortization of prior service credit 5 6 6
Total recognized in other comprehensive income (loss) 4 (6) (9)
Amounts related to discontinued operations (6) Ìý Ìý
Total recognized in other comprehensive income (loss) in continuing operations (2) (6) (9)
Net periodic benefit cost Ìý 1 2
Total recognized in net periodic benefit cost and other comprehensive income (loss) $ (2) $ (5) $ (7)
Projected benefit obligation: Ìý Ìý Ìý
Discount rate (as a percent) 3.46% 4.26% 3.58%
Net periodic pension cost: Ìý Ìý Ìý
Discount rate (as a percent) 4.26% 3.58% 4.04%
Other Postretirement Benefit Plans | United States | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES Ìý Ìý Ìý
Amounts recognized in net periodic benefit cost and other comprehensive income (loss) Ìý Ìý Ìý
Current year actuarial loss (gain) Ìý $ (10) $ (12)
Amortization of actuarial loss $ (1) (2) (3)
Amortization of prior service credit 5 6 6
Total recognized in other comprehensive income (loss) 4 (6) (9)
Amounts related to discontinued operations (6) Ìý Ìý
Total recognized in other comprehensive income (loss) in continuing operations (2) (6) (9)
Net periodic benefit cost Ìý 1 2
Total recognized in net periodic benefit cost and other comprehensive income (loss) $ (2) $ (5) (7)
Other Postretirement Benefit Plans | Non-U.S. Defined Benefit Plans Ìý Ìý Ìý
Amounts recognized in net periodic benefit cost and other comprehensive income (loss) Ìý Ìý Ìý
Amortization of actuarial loss Ìý Ìý (1)
Amortization of prior service credit Ìý Ìý 2
Total recognized in other comprehensive income (loss) Ìý Ìý 1
Amounts related to discontinued operations Ìý Ìý $ (1)
Projected benefit obligation: Ìý Ìý Ìý
Discount rate (as a percent) 2.90% 3.50% 3.30%
Net periodic pension cost: Ìý Ìý Ìý
Discount rate (as a percent) 3.50% 3.30% 3.50%
Other Postretirement Benefit Plans | Non-U.S. Defined Benefit Plans | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES Ìý Ìý Ìý
Amounts recognized in net periodic benefit cost and other comprehensive income (loss) Ìý Ìý Ìý
Amortization of actuarial loss Ìý Ìý $ (1)
Amortization of prior service credit Ìý Ìý 2
Total recognized in other comprehensive income (loss) Ìý Ìý 1
Amounts related to discontinued operations Ìý Ìý $ (1)