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Divestitures (Details) - USD ($) $ in Millions |  |  |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | --- | ---
Oct. 31, 2025 | May 07, 2025 | Feb. 03, 2025 | Dec. 31, 2025 | Sep. 30, 2025 | Jun. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Net gain (loss) on asset sales |  |  |  |  | $ (1) |  | $ 1 | $ 700 | $ 95
Initial period (in years) |  |  | 5 years |  |  |  |  |  |
Support service period (in months) |  |  | 18 months |  |  |  |  |  |
Purchase price receipt transaction |  |  | $ 905 |  |  |  |  |  |
Transaction costs |  |  | 26 |  |  |  |  |  |
Net assets |  |  | 439 |  |  |  |  |  |
Pre-tax gain |  |  | 255 |  |  |  |  |  |
Pre-tax income from sale of assets |  |  |  |  |  |  | $ 13 |  | 48
Asia Pacific |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Net gain (loss) on asset sales |  |  |  |  |  |  |  | 55 |
Net gain on asset sales, after-tax and minority |  |  |  |  |  |  |  | $ 26 |
EMEA |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Net gain (loss) on asset sales |  |  |  |  |  |  |  |  | 80
North America |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Gain on sale leaseback |  |  |  |  |  |  |  |  | $ 14
G-3 Chickadee Purchaser, LLC | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Chemical Business | Subsequent Event |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Purchase price receipt transaction | $ 650 |  |  |  |  |  |  |  |
Purchase price | $ 580 |  |  |  |  |  |  |  |
Master supply agreement, period (in years) | 15 years |  |  |  |  |  |  |  |
Transition services agreement, period (in months) | 18 months |  |  |  |  |  |  |  |
G-3 Chickadee Purchaser, LLC | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Chemical Business | Subsequent Event | Forecast |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Pre-tax gain |  |  |  | $ 135 |  |  |  |  |
Sale Of Dunlop Brand |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Purchase price receipt transaction |  | $ 735 |  |  |  |  |  |  |
Pre-tax gain |  |  |  |  |  | $ 385 |  |  |
Transition support fee |  | $ 105 |  |  |  |  |  |  |
Transition offtake agreement term (in years) |  | 5 years |  |  |  |  |  |  |
Net assets sold |  |  |  |  |  | 133 |  |  |
Transaction cost |  |  |  |  |  | $ 26 |  |  |
Sale Of Dunlop Brand, Up-Front Transition Support Fees |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Deferred revenue |  | $ 105 |  |  |  |  |  |  |
Sale Of Dunlop Brand, European Inventory |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Deferred revenue |  | 86 |  |  |  |  |  |  |
Trademark License And Assignment Agreement |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Deferred revenue |  |  | 90 |  |  |  |  |  |
Product Supply Agreement |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Deferred revenue |  |  | $ 95 |  |  |  |  |  |
Yokohama Rubber Company |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Initial period (in years) |  |  | 10 years |  |  |  |  |  |
Sumitomo Rubber Industries Ltd |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Noncash acquisition, inventory acquired |  | 104 |  |  |  |  |  |  |
Sumitomo Rubber Industries Ltd | Sale Of Dunlop Brand |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Purchase price for sale of rights |  | $ 526 |  |  |  |  |  |  |

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