v3.25.4
Accounting Policies - Narrative (Details) - USD ($)
$ in Millions
 12 Months Ended
Oct. 31, 2025
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Research and development expenditures   $ 380 $ 426 $ 461  
Advertising costs   362 327 364  
Asset, held-for-sale, not part of disposal group     466    
Liabilities held for sale     51    
Maximum cash investments with single counterparty   205      
Capital lease obligations   3 8 19  
Accrued capital expenditures remaining unpaid   238 $ 302 348  
Payments for capital expenditures accrued and unpaid in prior year       348 $ 324
Restricted net assets   $ 731      
Goodwill, Impairment Loss, Statement of Income or Comprehensive Income [Extensible Enumeration]   Goodwill and Intangible Asset Impairment Goodwill and Intangible Asset Impairment    
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration] Goodwill and Intangible Asset Impairment        
Insurance expenses   $ 50      
Depreciation expense for property, plant and equipment   $ 1,015 $ 1,011 $ 967  
Lessee, operating lease, option to terminate, term   1 year      
Lessee, operating lease, term of contract   12 months      
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]   Long Term Debt and Finance Leases (Notes 15 and 16), Long Term Debt and Finance Leases due Within One Year (Notes 15 and 16) Long Term Debt and Finance Leases (Notes 15 and 16), Long Term Debt and Finance Leases due Within One Year (Notes 15 and 16)    
Cooper Tire          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration]     Goodwill and Intangible Asset Impairment    
Americas          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Goodwill, Impairment Loss, Statement of Income or Comprehensive Income [Extensible Enumeration]   Goodwill and Intangible Asset Impairment Goodwill and Intangible Asset Impairment    
Asia Pacific          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Goodwill, Impairment Loss, Statement of Income or Comprehensive Income [Extensible Enumeration]   Goodwill and Intangible Asset Impairment Goodwill and Intangible Asset Impairment    
Sale of Dunlop Brand          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Asset, held-for-sale, not part of disposal group   $ 58      
Minimum          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Payment term (in days)   30 days      
Operating lease, weighted average remaining lease term   1 year      
Lessee, operating lease, renewal term   1 year      
Maximum          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Payment term (in days)   90 days      
Operating lease, weighted average remaining lease term   50 years      
Lessee, operating lease, renewal term   50 years      
Prepaid Expenses and Other Current Assets          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Restricted cash   $ 109 $ 54