Other Income, Net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Other Income and Expenses [Abstract]
Gains/(Losses) on derivatives	$ (36)	$ 186	$ (15)	$ 545
Currency revaluation gains/(losses)	51	(157)	73	(585)
Interest and investment income	33	19	80	71
Insurance Fee Income	0	21	0	68
Other	9	40	35	125
Total other income, net	$ 57	$ 109	$ 173	$ 224