Derivative Instruments and Hedging Activities (Pre-Tax Gains (Losses) On Derivatives Designated As Hedging Instruments) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Derivative Instruments, Gains (Loss) [Line Items]
Revenues	$ 15,800	$ 14,827	$ 48,394	$ 44,758
Cost of Products Sold	14,742	14,015	45,266	42,182
Interest Expense	87	79	267	246
Other (Income) Expense - Net	(25)	(4)	(42)	7
Designated As Hedging Instrument [Member]
Derivative Instruments, Gains (Loss) [Line Items]
Total amount recognized in earnings	(72)	(19)	(98)	(13)
Designated As Hedging Instrument [Member] \| Other (Income) Expense - Net [Member]
Derivative Instruments, Gains (Loss) [Line Items]
FX Contracts effective amount recognized in earnings				(2)
Commodity Contracts effective amount recognized in earnings	0			0
Total amount recognized in earnings	0	0	0	(2)
Designated As Hedging Instrument [Member] \| Interest Expense [Member]
Derivative Instruments, Gains (Loss) [Line Items]
Interest contracts effective amount recognized in earnings			1
Total amount recognized in earnings	0		1
Designated As Hedging Instrument [Member] \| Cost of Products Sold [Member]
Derivative Instruments, Gains (Loss) [Line Items]
Commodity Contracts effective amount recognized in earnings	(87)	(15)	(115)	(20)
Commodity contracts ineffective amount recognized in earnings		(4)		5
Total amount recognized in earnings	(87)	(19)	(115)	(15)
Designated As Hedging Instrument [Member] \| Revenues [Member]
Derivative Instruments, Gains (Loss) [Line Items]
Commodity Contracts effective amount recognized in earnings	15	0	16
Commodity contracts ineffective amount recognized in earnings		0		4
Total amount recognized in earnings	$ 15	$ 0	$ 16	$ 4

The aggregate cost of goods produced and sold and services rendered during the reporting period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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The amount of net gains or losses on foreign currency cash flow hedges reclassified during the period to earnings from accumulated other comprehensive income upon the hedged transaction affecting earnings.

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The net gain (loss) recognized in earnings during the period due to ineffectiveness in price risk cash flow hedges.

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Amount of the cost of borrowed funds accounted for as interest expense.

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The amount of net gains or losses on interest rate cash flow hedges reclassified during the period to earnings from accumulated other comprehensive income upon the hedged transaction affecting earnings.

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The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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