Annual report pursuant to Section 13 and 15(d)

Schedule I - Condensed Financial Information of Registrant - Huntsman Corporation (Parent Only) Statements of Cash Flows (Details)

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Schedule I - Condensed Financial Information of Registrant - Huntsman Corporation (Parent Only) Statements of Cash Flows (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Operating Activities:                      
Net income                 $ 1,045 $ 1,034 $ 562
Equity in income of subsidiaries                 (143) (42) (54)
Stock-based compensation                 32 27 29
Net cash provided by operating activities                 952 253 897
Investing Activities:                      
Net cash (used in) provided by investing activities                 (524) 1,463 (260)
Financing Activities:                      
Dividends paid to common stockholders $ (40) $ (42) $ (41) $ (36) $ (35) $ (36) $ (36) $ (37) (159) (144) (150)
Proceeds from issuance of common stock                 10 3 2
Repurchase of common stock                 (200) (96) (208)
Net cash used in financing activities                 (977) (655) (450)
(Decrease) increase in cash and cash equivalents                 (552) 1,068 185
Cash and cash equivalents from continuing operations at beginning of period       1,593       525 1,593 525 340
Cash and cash equivalents at end of period 1,041       1,593       1,041 1,593 525
Reportable Legal Entities [Member] | Parent Company [Member]                      
Operating Activities:                      
Net income                 1,045 1,034 562
Equity in income of subsidiaries                 (891) (892) (401)
Stock-based compensation                 1 1 1
Noncash interest income                 0 (2) (15)
Changes in operating assets and liabilities                 (2) (1) 13
Net cash provided by operating activities                 153 140 160
Investing Activities:                      
Repayments of loan by affiliate                 0 380 207
Net cash (used in) provided by investing activities                 0 380 207
Financing Activities:                      
Dividends paid to common stockholders                 (159) (144) (150)
Repurchase and cancellation of stock awards                 (7) (8) (12)
Proceeds from issuance of common stock                 10 3 2
Repurchase of common stock                 (200) (96) (208)
Increase (decrease) in payable to affiliates                 203 (273) 1
Net cash used in financing activities                 (153) (518) (367)
(Decrease) increase in cash and cash equivalents                 0 2 0
Cash and cash equivalents from continuing operations at beginning of period       $ 2       $ 0 2 0 0
Cash and cash equivalents at end of period $ 2       $ 2       $ 2 $ 2 $ 0