Condensed Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income from continuing operations	$ 1,434	$ 1,534	$ 4,434	$ 4,312
Income (loss) from discontinued operations	0	37	0	1
Net Income	1,434	1,571	4,434	4,313
Foreign currency translation adjustments
Foreign currency translation adjustments arising during period	514	(359)	909	(596)
Less: Reclassification adjustments for loss on sale of an investment in a foreign entity recognized in Other income, net	3	1	3	0
Foreign currency translation adjustments	511	(360)	906	(596)
Pension and post-retirement benefit plans
Pension and post-retirement benefit plans adjustments during the period	(50)	7	(54)	(30)
Amortization of actuarial loss, prior service cost and transition obligation	132	127	395	381
Total pension and post-retirement benefit plans, before tax	(82)	(134)	(341)	(351)
Tax expense	(53)	(50)	(149)	(131)
Pension and Other Postretirement Benefit Plans, Net of Tax	(29)	(84)	(192)	(220)
Unrealized gain (loss) on available-for-sale securities
Unrealized holding gain (loss) arising during period	19	49	17	139
Reclassification adjustments for gain included in Other income, net	138	20	545	72
Total unrealized gain (loss) on available for-sale securities, before tax	(119)	29	(528)	67
Tax benefit (expense)	(43)	11	(199)	25
Total unrealized gain (loss) on available for-sale securities, net of tax	(76)	18	(329)	42
Change in unrealized cash flow hedging
Unrealized cash flow hedging (loss) gain arising during the period	310	(7)	440	188
(Loss) Gain reclassified into Product Sales	24	(32)	14	(139)
Total unrealized loss (gain) on cash-flow hedging, before tax	286	25	426	327
Tax expense	73	7	105	87
Total unrealized gain (loss) on cash-flow hedging, net of tax	213	18	321	240
Other comprehensive income (loss), net of tax	677	(240)	1,090	(94)
Comprehensive income	2,111	1,331	5,524	4,219
Less: Comprehensive income attributable to noncontrolling interest	144	96	362	287
Comprehensive income attributable to common shareowners	$ 1,967	$ 1,235	$ 5,162	$ 3,932