Goodwill And Other Intangible Assets (Schedule of Finite-lived Intangible Assets And Indefinite-lived Intangible Assets By Major Class) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Intangible Assets, Gross (Excluding Goodwill) [Abstract]
Finite-lived intangibles, gross carrying amount	$ 21,881	$ 9,080
Total intangibles, gross carrying amount	26,056	13,296
Finite-lived intangibles, accumulated amortization	(4,774)	(3,546)
Trademarks and trade names
Intangible Assets, Gross (Excluding Goodwill) [Abstract]
Indefinite-lived intangibles, gross carrying amount	4,175	4,216
Patents and technology
Intangible Assets, Gross (Excluding Goodwill) [Abstract]
Finite-lived intangibles, gross carrying amount	12,526	2,713
Finite-lived intangibles, accumulated amortization	(1,539)	(934)
Customer relationships, trade names and other intangibles
Intangible Assets, Gross (Excluding Goodwill) [Abstract]
Finite-lived intangibles, gross carrying amount	9,355	6,367
Finite-lived intangibles, accumulated amortization	$ (3,235)	$ (2,612)

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
-SubTopic 340
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004

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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Amount before accumulated amortization of intangible assets, excluding goodwill.

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