Condensed Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net Income from operations	$ 2,139	$ 1,532	$ 3,507	$ 3,000
Foreign currency translation adjustments
Foreign currency translation adjustments arising during period	(602)	249	(193)	395
Less: Reclassification adjustments for loss on sale of an investment in a foreign entity recognized in Other income, net	3	0	3	0
Foreign currency translation adjustments	(605)	249	(196)	395
Tax (benefit) expense	74	0	(56)	0
Foreign Currency Translation Adjustments, Net of Tax	(679)	249	(140)	395
Pension and post-retirement benefit plans
Pension and post-retirement benefit plans adjustments during the period	18	(5)	26	(4)
Amortization of actuarial loss, prior service cost and transition obligation	88	132	176	263
Total pension and post-retirement benefit plans, before tax	(106)	(127)	(202)	(259)
Tax expense	(26)	(47)	(49)	(96)
Pension and Other Postretirement Benefit Plans, Net of Tax	(80)	(80)	(153)	(163)
Unrealized gain (loss) on available-for-sale securities
Unrealized holding gain (loss) arising during period	0	30	0	(2)
Reclassification adjustments for gain included in Other income, net	0	24	0	407
Other Comprehensive Income (Loss), ASU 2016-01 adoption impact on Securities Arising During Period	0	0	(5)	0
Total unrealized gain (loss) on available for-sale securities, before tax	0	6	(5)	(409)
Tax expense (benefit)	0	2	0	(156)
Total unrealized gain (loss) on available for-sale securities, net of tax	0	4	(5)	(253)
Change in unrealized cash flow hedging
Unrealized cash flow hedging (loss) gain arising during the period	(245)	66	(200)	130
Gain (Loss) reclassified into Product Sales	1	(5)	28	(10)
Total unrealized (loss) gain on cash-flow hedging, before tax	(246)	71	(228)	140
Tax expense (benefit)	(60)	17	(56)	32
Total unrealized gain (loss) on cash-flow hedging, net of tax	(186)	54	(172)	108
Other comprehensive income (loss), net of tax	(785)	387	(164)	413
Comprehensive income	1,354	1,919	3,343	3,413
Less: Comprehensive income attributable to noncontrolling interest	53	111	157	218
Comprehensive income attributable to common shareowners	$ 1,301	$ 1,808	$ 3,186	$ 3,195