v3.26.1
Note 14 - Accumulated Other Comprehensive Loss - Components and Changes in Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Balance $ 2,957 $ 3,163
Other comprehensive (loss) income, net of tax (9) 33
Balance 2,902 3,171
Huntsman International LLC [Member]    
Balance 2,964 3,170
Other comprehensive (loss) income, net of tax (10) 33
Balance 2,906 3,173
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member]    
Balance (543) [1] (675) [2]
Other comprehensive loss before reclassifications, gross (12) [1] 32 [2]
Tax impact (1) [1] 3 [2]
Amounts reclassified from accumulated other comprehensive loss, gross [3] 0 [1] 0 [2]
Tax impact 0 [1] 0 [2]
Other comprehensive (loss) income, net of tax (13) [1] 35 [2]
Balance (556) [1] (640) [2]
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]    
Balance (547) [4] (680) [5]
Other comprehensive loss before reclassifications, gross (13) [4] 32 [5]
Tax impact (1) [4] 3 [5]
Amounts reclassified from accumulated other comprehensive loss, gross [3] 0 [4] 0 [5]
Tax impact 0 [4] 0 [5]
Other comprehensive (loss) income, net of tax (14) [4] 35 [5]
Balance (561) [4] (645) [5]
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member]    
Balance (490) [6] (552) [7]
Other comprehensive loss before reclassifications, gross 0 [6] (12) [7]
Tax impact 0 [6] 0 [7]
Amounts reclassified from accumulated other comprehensive loss, gross [3],[8],[9] 5 [6] 4 [7]
Tax impact [8],[9] (1) [6] 0 [7]
Other comprehensive (loss) income, net of tax 4 [6] (8) [7]
Balance (486) [6] (560) [7]
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]    
Balance (466) [10] (528) [11]
Other comprehensive loss before reclassifications, gross 0 [10] (12) [11]
Tax impact 0 [10] 0 [11]
Amounts reclassified from accumulated other comprehensive loss, gross [3],[8],[12] 5 [10] 4 [11]
Tax impact [8],[12] (1) [10] 0 [11]
Other comprehensive (loss) income, net of tax 4 [10] (8) [11]
Balance (462) [10] (536) [11]
Accumulated Other Comprehensive Income, Other, Net, Including Portion Attributable to Noncontrolling Interest [Member]    
Balance 4 0
Other comprehensive loss before reclassifications, gross 0 6
Tax impact 0 0
Amounts reclassified from accumulated other comprehensive loss, gross [3] 0 0
Tax impact 0 0
Other comprehensive (loss) income, net of tax 0 6
Balance 4 6
Accumulated Other Comprehensive Income, Other, Net, Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]    
Balance 0 (4)
Other comprehensive loss before reclassifications, gross 0 6
Tax impact 0 0
Amounts reclassified from accumulated other comprehensive loss, gross [3] 0 0
Tax impact 0 0
Other comprehensive (loss) income, net of tax 0 6
Balance 0 2
Accumulated Other Comprehensive Income (Loss), Unconsolidated Affiliates Including Portion Attributable to Noncontrolling Interest [Member]    
Balance (1,029) (1,227)
Other comprehensive loss before reclassifications, gross (12) 26
Tax impact (1) 3
Amounts reclassified from accumulated other comprehensive loss, gross [3] 5 4
Tax impact (1) 0
Other comprehensive (loss) income, net of tax (9) 33
Balance (1,038) (1,194)
Accumulated Other Comprehensive Income (Loss), Unconsolidated Affiliates Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]    
Balance (1,013) (1,212)
Other comprehensive loss before reclassifications, gross (13) 26
Tax impact (1) 3
Amounts reclassified from accumulated other comprehensive loss, gross [3] 5 4
Tax impact (1) 0
Other comprehensive (loss) income, net of tax (10) 33
Balance (1,023) (1,179)
AOCI Attributable to Noncontrolling Interest [Member]    
Balance 23 27
Other comprehensive loss before reclassifications, gross (2) 0
Tax impact 0 0
Amounts reclassified from accumulated other comprehensive loss, gross [3] 0 0
Tax impact 0 0
Other comprehensive (loss) income, net of tax (2) 0
Balance 21 27
AOCI Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]    
Balance 23 27
Other comprehensive loss before reclassifications, gross (2) 0
Tax impact 0 0
Amounts reclassified from accumulated other comprehensive loss, gross [3] 0 0
Tax impact 0 0
Other comprehensive (loss) income, net of tax (2) 0
Balance 21 27
AOCI Attributable to Parent [Member]    
Balance (1,006) (1,200)
Other comprehensive loss before reclassifications, gross (14) 26
Tax impact (1) 3
Amounts reclassified from accumulated other comprehensive loss, gross [3] 5 4
Tax impact (1) 0
Other comprehensive (loss) income, net of tax (11) 33
Balance (1,017) (1,167)
AOCI Attributable to Parent [Member] | Huntsman International LLC [Member]    
Balance (990) (1,185)
Other comprehensive loss before reclassifications, gross (15) 26
Tax impact (1) 3
Amounts reclassified from accumulated other comprehensive loss, gross [3] 5 4
Tax impact (1) 0
Other comprehensive (loss) income, net of tax (12) 33
Balance $ (1,002) $ (1,152)
[1] Amounts are net of tax of $52 million for both March 31, 2026 and January 1, 2026, respectively.
[2] Amounts are net of tax of $57 million and $60 million as of March 31, 2025 and January 1, 2025, respectively.
[3] See tables below for details about pension and other postretirement benefits reclassifications.
[4] Amounts are net of tax of $38 million and $39 million as of March 31, 2026 and January 1, 2026, respectively.
[5] Amounts are net of tax of $44 million and $47 million as of March 31, 2025 and January 1, 2025, respectively.
[6] Amounts are net of tax of $49 million and $50 million as of March 31, 2026 and January 1, 2026, respectively.
[7] Amounts are net of tax of $61 million as of both March 31, 2025 and January 1, 2025.
[8] Details of amounts reclassified from accumulated other comprehensive loss relate only to pension and other postretirement benefits.
[9] Pension and other postretirement benefits amounts in parentheses indicate credits on our condensed consolidated statements of operations.
[10] Amounts are net of tax of $73 million and $74 million as of March 31, 2026 and January 1, 2026, respectively.
[11] Amounts are net of tax of $85 million as of both March 31, 2025 and January 1, 2025.
[12] Pension and other postretirement benefits amounts in parentheses indicate credits on our condensed consolidated statements of operations.