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Goodwill and Other Intangible Assets - Schedule of other intangible assets by asset class (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Carrying Amount | $ 2,710 | $ 2,786 |
Accumulated Amortization and Impairment | 2,218 | 2,146 |
Net Carrying Amount | 492 | 640 |
Amortization and impairment of intangible assets | 147 | 246 | $ 392
Customer-related and contract-based |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Carrying Amount | 2,289 | 2,337 |
Accumulated Amortization and Impairment | 1,848 | 1,775 |
Net Carrying Amount | 441 | 562 |
Technology and other |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Carrying Amount | 407 | 435 |
Accumulated Amortization and Impairment | 357 | 358 |
Net Carrying Amount | 50 | 77 |
Tradenames |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Carrying Amount | 14 | 14 |
Accumulated Amortization and Impairment | 13 | 13 |
Net Carrying Amount | $ 1 | 1 |
Impairment of intangible assets |  | $ 1,000 |

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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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