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Other Income, Net (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Component of Other Income, Nonoperating [Line Items]      
Gains/(Losses) on derivatives $ (190) $ (165) $ 11
Currency revaluation gains/(losses) 70 12 44
Interest and investment income 318 198 112
Other 16 35 83
Total other income, net 214 80 250
Affiliated Entity [Member]      
Component of Other Income, Nonoperating [Line Items]      
Related Party Transaction, Interest Income, Notes Receivable, Tax Sharing Agreement $ 5 $ 10 $ 9