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Other Assets and Investments (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2019
Mar. 31, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Accounts Notes And Loans Receivable [Line Items]              
Equity method investment, loss $ 703 $ 617 $ (56) $ 44 $ 1,320 $ (12)  
Trade receivable from a customer refinanced 30       30    
TireHub              
Accounts Notes And Loans Receivable [Line Items]              
Non-cash impairment charge 148            
United States | TireHub              
Accounts Notes And Loans Receivable [Line Items]              
Equity method investments $ 88       $ 88   $ 262
Equity ownership percentage 50.00%       50.00%    
Equity method investment, loss $ 14   $ 15   $ 26 $ 25  
United States | TireHub | Other Assets              
Accounts Notes And Loans Receivable [Line Items]              
Loan receivable, outstanding $ 36       $ 36