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Note 11 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025
Revenues |  | $ 1,663 | [1] | $ 1,458 | $ 3,083 | [1] | $ 2,868
Diversified [Member] |  |  |  |  |  |  |
Revenues |  | 1,362 |  | 1,202 | 2,513 |  | 2,371
Specialty [Member] |  |  |  |  |  |  |
Revenues |  | 300 |  | 252 | 565 |  | 490
Product and Service, Other [Member] |  |  |  |  |  |  |
Revenues |  | 13 |  | 12 | 27 |  | 23
Operating Segments [Member] |  |  |  |  |  |  |
Revenues | [2] | 1,675 |  | 1,466 | 3,105 |  | 2,884
Operating Segments [Member] | Polyurethanes [Member] |  |  |  |  |  |  |
Revenues | [2] | 1,079 | [1] | 932 | 2,002 | [1] | 1,844
Operating Segments [Member] | Polyurethanes [Member] | Diversified [Member] |  |  |  |  |  |  |
Revenues |  | 1,079 |  | 932 | 2,002 |  | 1,844
Operating Segments [Member] | Performance Products [Member] |  |  |  |  |  |  |
Revenues | [2] | 283 | [1] | 270 | 511 | [1] | 527
Operating Segments [Member] | Performance Products [Member] | Diversified [Member] |  |  |  |  |  |  |
Revenues |  | 283 |  | 270 | 511 |  | 527
Operating Segments [Member] | Advanced Materials [Member] |  |  |  |  |  |  |
Revenues | [2] | 313 | [1] | 264 | 592 | [1] | 513
Operating Segments [Member] | Advanced Materials [Member] | Specialty [Member] |  |  |  |  |  |  |
Revenues |  | 300 |  | 252 | 565 |  | 490
Operating Segments [Member] | Advanced Materials [Member] | Product and Service, Other [Member] |  |  |  |  |  |  |
Revenues |  | 13 |  | 12 | 27 |  | 23
Corporate and Reconciling Items [Member] |  |  |  |  |  |  |
Revenues |  | (12) | [1] | (8) | (22) | [1] | (16)
U.S. and Canada [Member] |  |  |  |  |  |  |
Revenues | [1] | 658 |  | 562 | 1,199 |  | 1,105
U.S. and Canada [Member] | Operating Segments [Member] | Polyurethanes [Member] |  |  |  |  |  |  |
Revenues | [1] | 442 |  | 369 | 805 |  | 725
U.S. and Canada [Member] | Operating Segments [Member] | Performance Products [Member] |  |  |  |  |  |  |
Revenues | [1] | 137 |  | 127 | 250 |  | 245
U.S. and Canada [Member] | Operating Segments [Member] | Advanced Materials [Member] |  |  |  |  |  |  |
Revenues | [1] | 83 |  | 69 | 156 |  | 141
U.S. and Canada [Member] | Corporate and Reconciling Items [Member] |  |  |  |  |  |  |
Revenues | [1] | (4) |  | (3) | (12) |  | (6)
Europe [Member] |  |  |  |  |  |  |
Revenues | [1] | 441 |  | 387 | 828 |  | 738
Europe [Member] | Operating Segments [Member] | Polyurethanes [Member] |  |  |  |  |  |  |
Revenues | [1] | 267 |  | 242 | 497 |  | 457
Europe [Member] | Operating Segments [Member] | Performance Products [Member] |  |  |  |  |  |  |
Revenues | [1] | 56 |  | 47 | 101 |  | 95
Europe [Member] | Operating Segments [Member] | Advanced Materials [Member] |  |  |  |  |  |  |
Revenues | [1] | 123 |  | 102 | 236 |  | 194
Europe [Member] | Corporate and Reconciling Items [Member] |  |  |  |  |  |  |
Revenues | [1] | (5) |  | (4) | (6) |  | (8)
Asia Pacific [Member] |  |  |  |  |  |  |
Revenues | [1] | 448 |  | 406 | 837 |  | 811
Asia Pacific [Member] | Operating Segments [Member] | Polyurethanes [Member] |  |  |  |  |  |  |
Revenues | [1] | 300 |  | 262 | 567 |  | 532
Asia Pacific [Member] | Operating Segments [Member] | Performance Products [Member] |  |  |  |  |  |  |
Revenues | [1] | 67 |  | 72 | 119 |  | 142
Asia Pacific [Member] | Operating Segments [Member] | Advanced Materials [Member] |  |  |  |  |  |  |
Revenues | [1] | 82 |  | 73 | 153 |  | 139
Asia Pacific [Member] | Corporate and Reconciling Items [Member] |  |  |  |  |  |  |
Revenues | [1] | (1) |  | (1) | (2) |  | (2)
Rest of World [Member] |  |  |  |  |  |  |
Revenues | [1] | 116 |  | 103 | 219 |  | 214
Rest of World [Member] | Operating Segments [Member] | Polyurethanes [Member] |  |  |  |  |  |  |
Revenues | [1] | 70 |  | 59 | 133 |  | 130
Rest of World [Member] | Operating Segments [Member] | Performance Products [Member] |  |  |  |  |  |  |
Revenues | [1] | 23 |  | 24 | 41 |  | 45
Rest of World [Member] | Operating Segments [Member] | Advanced Materials [Member] |  |  |  |  |  |  |
Revenues | [1] | 25 |  | 20 | 47 |  | 39
Rest of World [Member] | Corporate and Reconciling Items [Member] |  |  |  |  |  |  |
Revenues | [1] | $ (2) |  | $ 0 | $ (2) |  | $ 0
[1] | Geographic information for revenues is based upon countries into which product is sold.
[2] | A reconciliation of total reportable segments’ revenues to total consolidated revenues is provided in “Note 11. Revenue Recognition.”

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