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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

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- 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) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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