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, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Derivative [Line Items]
Revenues	$ 16,281	$ 16,297	$ 31,251	$ 31,601
Cost of Products Sold	15,173	15,325	29,192	29,701
Other (Income) Expense - Net	(67)	(13)	(99)	(21)
Total gain (loss) recognized in earnings			105	22
Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
Total gain (loss) recognized in earnings	(146)	(76)
Revenues [Member]
Derivative [Line Items]
FX Contracts			46	(2)
Total gain (loss) recognized in earnings			46	(2)
Revenues [Member] | Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
FX Contracts	11	(10)
Total gain (loss) recognized in earnings	11	(10)
Cost of Products Sold [Member]
Derivative [Line Items]
FX Contracts			(661)	51
Commodity Contracts			593	(11)
Total gain (loss) recognized in earnings			(68)	40
Cost of Products Sold [Member] | Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
FX Contracts	(76)	51
Commodity Contracts	(29)	(131)
Total gain (loss) recognized in earnings	(105)	(80)
Other (Income) Expense - Net [Member]
Derivative [Line Items]
FX Contracts			72	(16)
Commodity Contracts			55
Total gain (loss) recognized in earnings			$ 127	$ (16)
Other (Income) Expense - Net [Member] | Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
FX Contracts	(52)	14
Commodity Contracts	0
Total gain (loss) recognized in earnings	$ (52)	$ 14