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Income Taxes (Details) € in Millions, $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Dec. 31, 2024 EUR (€) | Dec. 31, 2021 USD ($) | Dec. 31, 2024 USD ($)
Income Taxes [Line Items] |  |  |  |  |  |  |
Income tax expense | $ 1,464 | $ 9 | $ 1,501 | $ 75 |  |  |
Income (loss) before income taxes | (733) | (27) | (297) | 42 |  |  |
Net discrete tax expense (benefit) | $ 1,450 | $ 7 | $ 1,446 | $ 6 |  |  |
U.S. statutory rate | 21.00% | 21.00% | 21.00% | 21.00% |  |  |
Corporate alternative minimum tax |  |  |  |  | 15.00% |  |
Corporate average revenue excess amount | € |  |  |  |  | € 750 |  |
Unrecognized tax benefits | $ 0 |  | $ 0 |  |  |  |
Goodyear net income (loss) | (2,195) | $ (37) | (1,826) | $ (27) |  |  |
Deferred tax asset |  |  |  |  |  | $ 315 |
Internal Revenue Service (IRS) | Settlement with Taxing Authority |  |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |  |
Goodyear net income (loss) |  |  |  |  |  | $ 1,500 |
United States |  |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |  |
Full valuation allowance on net deferred tax assets | 1,400 |  | 1,400 |  |  |  |
Non-cash expense |  |  | 1,400 |  |  |  |
Net deferred tax assets, unlimited lives | 1,200 |  | 1,200 |  |  |  | $ 1,100
Net deferred tax assets, limited lives | 200 |  | 200 |  |  |  | 200
Domestic Tax Jurisdiction |  |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |  |
Net deferred tax assets | 1,400 |  | 1,400 |  |  |  | 1,300
Valuation allowance | 1,400 |  | 1,400 |  |  |  |
State And Local Authority |  |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |  |
Valuation allowance |  |  |  |  |  |  | 26
Foreign Country |  |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |  |
Net deferred tax assets | 1,600 |  | 1,600 |  |  |  | 1,500
Valuation allowance | 1,300 |  | 1,300 |  |  |  | $ 1,200
Foreign Country | Luxembourg |  |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |  |
Valuation allowance | $ 1,100 |  | $ 1,100 |  |  |  |

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