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Other Income, Net (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Other Income and Expenses [Abstract]        
Gains/(Losses) on derivatives $ 178 $ (35) $ 0 $ (122)
Currency revaluation gains/(losses) (147) (18) (16) 44
Interest and investment income 83 49 162 91
Other 10 5 37 25
Other income, net $ 124 $ 1 $ 183 $ 38