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Goodwill and Intangible Assets Gross carrying value, accumulated amortization and net carrying value of intangible assets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	$ 15,680	$ 16,311
Finite-Lived Intangible Assets, Accumulated Amortization	(5,636)	(5,455)
Intangible Assets, Net (Excluding Goodwill)	10,044	10,856
Customer-Related Intangible Assets [Member]
Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	13,011	13,428
Finite-Lived Intangible Assets, Accumulated Amortization	(4,697)	(4,575)
Intangible Assets, Net (Excluding Goodwill)	8,314	8,853
Trademarks and Technology [Member]
Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	1,630	1,597
Finite-Lived Intangible Assets, Accumulated Amortization	(739)	(624)
Intangible Assets, Net (Excluding Goodwill)	891	973
Trademarks and Trade Names [Member]
Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	617	680
Finite-Lived Intangible Assets, Accumulated Amortization	0	0
Intangible Assets, Net (Excluding Goodwill)	617	680
Other Intangible Assets [Member]
Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	422	606
Finite-Lived Intangible Assets, Accumulated Amortization	(200)	(256)
Intangible Assets, Net (Excluding Goodwill)	$ 222	$ 350

X

- Definition

Accumulated amount of 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 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
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Amount before accumulated amortization of intangible assets, excluding goodwill.

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- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 350
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