Derivative Instruments and Hedging Activities (Pre-Tax Gains (Losses) On Derivatives Not Designated As Hedging Instruments) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Derivative [Line Items]
Revenues	$ 15,126	$ 16,726	$ 46,377	$ 48,327
Cost of Products Sold	14,084	15,648	43,276	45,349
Other (Income) Expense - Net	278	(18)	179	(39)
Interest Expense	100	97	270	307
Total gain (loss) recognized in earnings	(441)	83	(336)	105
Revenues [Member]
Derivative [Line Items]
FX Contracts	8	17	54	15
Total gain (loss) recognized in earnings	8	17	54	15
Cost of Products Sold [Member]
Derivative [Line Items]
FX Contracts	(77)	(81)	(738)	(30)
Commodity Contracts	(272)	153	321	142
Total gain (loss) recognized in earnings	(349)	72	(417)	112
Interest Expense [Member]
Derivative [Line Items]
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net	(15)		(15)
Total gain (loss) recognized in earnings	(15)		(15)
Other (Income) Expense - Net [Member]
Derivative [Line Items]
FX Contracts	(85)	(6)	(13)	(22)
Commodity Contracts	0		55
Total gain (loss) recognized in earnings	$ (85)	$ (6)	$ 42	$ (22)