Income Taxes Components (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Components of Income From Continuing Operations Before Income Taxes [Abstract]
U.S.	$ 655	$ 493	$ 851
Non-U.S.	1,774	1,531	1,085
Income from Continuing Operations Before Income Taxes	2,429	2,024	1,936
Current Income Tax Provision [Abstract]
Federal	1,259	280	184
Non-U.S.	576	349	363
State	62	9	9
Total Current Income Tax Provision	1,897	638	556
Deferred Income Tax Provision (Benefit) [Abstract]
Federal	(1,437)	(510)	(297)
Non-U.S.	(271)	(104)	(288)
State	12	(25)	(15)
Total Deferred Income Tax Provision (Benefit)	(1,696)	(639)	(600)
Provision for (benefit from) income taxes	$ 201	(1)	(44)
Excess income tax benefits from stock-based compensation plans recognized in equity		$ 53	$ 63