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Receivables - Narrative (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Receivables, net    
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]    
Trade notes receivables $ 81  
Receivables, net | CHINA    
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]    
Trade notes receivables   $ 10
Bank notes without recourse    
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]    
Trade notes receivables 37  
Bank notes without recourse | CHINA    
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]    
Trade notes receivables $ 26 $ 9