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, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Derivative [Line Items]
Revenues	$ 20,340	$ 15,126	$ 62,159	$ 46,377
Cost of Products Sold	19,014	14,084	57,822	43,276
Other (Income) Expense - Net	20	282	36	202
Interest Expense	61	100	188	270
Total gain (loss) recognized in earnings	204	(441)	(1,227)	(336)
Revenues [Member]
Derivative [Line Items]
FX Contracts	13	8	0	54
Total gain (loss) recognized in earnings	13	8	0	54
Cost of Products Sold [Member]
Derivative [Line Items]
FX Contracts	(92)	(77)	(140)	(738)
Commodity Contracts	214	(272)	(1,241)	321
Total gain (loss) recognized in earnings	122	(349)	(1,381)	(417)
Interest Expense [Member]
Derivative [Line Items]
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net	7	(15)	17	(15)
Total gain (loss) recognized in earnings	7	(15)	17	(15)
Other (Income) Expense - Net [Member]
Derivative [Line Items]
FX Contracts	62	(85)	137	(13)
Commodity Contracts	0	0	0	55
Total gain (loss) recognized in earnings	$ 62	$ (85)	$ 137	$ 42