Condensed Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net Income from operations	$ 1,349	$ 1,434	$ 4,856	$ 4,434
Foreign currency translation adjustments
Foreign currency translation adjustments arising during period	(185)	514	(378)	909
Less: Reclassification adjustments for loss on sale of an investment in a foreign entity recognized in Other income, net	0	3	3	3
Foreign currency translation adjustments	(185)	511	(381)	906
Tax (benefit) expense	(4)	0	(60)	0
Foreign Currency Translation Adjustments, Net of Tax	(181)	511	(321)	906
Pension and post-retirement benefit plans
Pension and post-retirement benefit plans adjustments during the period	(17)	(50)	9	(54)
Amortization of actuarial loss, prior service cost and transition obligation	86	132	262	395
Total pension and post-retirement benefit plans, before tax	(69)	(82)	(271)	(341)
Tax expense	(15)	(53)	(64)	(149)
Pension and Other Postretirement Benefit Plans, Net of Tax	(54)	(29)	(207)	(192)
Unrealized gain (loss) on available-for-sale securities
Unrealized holding gain (loss) arising during period	0	19	0	17
Reclassification adjustments for gain included in Other income, net	0	138	0	545
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	(119)	(5)	(528)
Tax expense (benefit)	0	(43)	0	(199)
Total unrealized gain (loss) on available for-sale securities, net of tax	0	(76)	(5)	(329)
Change in unrealized cash flow hedging
Unrealized cash flow hedging (loss) gain arising during the period	95	310	(105)	440
Gain (Loss) reclassified into Product Sales	(2)	24	26	14
Total unrealized (loss) gain on cash-flow hedging, before tax	97	286	(131)	426
Tax expense (benefit)	28	73	(28)	105
Total unrealized gain (loss) on cash-flow hedging, net of tax	69	213	(103)	321
Other comprehensive income (loss), net of tax	(58)	677	(222)	1,090
Comprehensive income	1,291	2,111	4,634	5,524
Less: Comprehensive income attributable to noncontrolling interest	92	144	249	362
Comprehensive income attributable to common shareowners	$ 1,199	$ 1,967	$ 4,385	$ 5,162