Derivative Instruments and Hedging Activities (Pre-Tax Gains (Losses) On Derivatives Not Designated As Hedging Instruments) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Derivative [Line Items]
Revenues	$ 22,926	$ 16,281	$ 41,819	$ 31,251
Cost of Products Sold	21,463	15,173	38,808	29,192
Other (Income) Expense - Net	49	(56)	16	(80)
Interest Expense	40	87	127	170
Total gain (loss) recognized in earnings	(517)	(146)	(1,431)	105
Revenues [Member]
Derivative [Line Items]
FX Contracts	(43)	11	(13)	46
Total gain (loss) recognized in earnings	(43)	11	(13)	46
Cost of Products Sold [Member]
Derivative [Line Items]
FX Contracts	214	(76)	(48)	(661)
Commodity Contracts	(673)	(29)	(1,455)	593
Total gain (loss) recognized in earnings	(459)	(105)	(1,503)	(68)
Interest Expense [Member]
Derivative [Line Items]
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net	30		10
Total gain (loss) recognized in earnings	30		10
Other (Income) Expense - Net [Member]
Derivative [Line Items]
FX Contracts	(45)	(52)	75	72
Commodity Contracts	0	0	0	55
Total gain (loss) recognized in earnings	$ (45)	$ (52)	$ 75	$ 127