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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