Other Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Component of Other Income, Nonoperating [Line Items]
Derivative Instruments, Gain/(Loss) recongnized in income, Ineffectiveness Portion and amount not designated as hedging instruments	$ (170)	$ (40)	$ (55)	$ (63)
Foreign Currency Transaction Gain (Loss), Realized	140	31	(11)	38
Investment Income, Net	20	15	45	29
Insurance Fee Income	22	15	38	41
Other Nonoperating Income (Expense)	35	45	84	72
Other Income Loss Net	$ 47	$ 66	$ 101	$ 117