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Accounting Policies Cloud Computing (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Accounting Policies [Abstract] |  |  |
Hosting Arrangement, Service Contract, Implementation Cost, Expense, Amortization | $ 11 | $ 6 | $ 2
Hosting Arrangement, Service Contract, Implementation Cost, Capitalized, after Accumulated Amortization | $ 16 | $ 24 |

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- Definition Amount, after accumulated amortization, of capitalized implementation cost from hosting arrangement that is service contract. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482099/360-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 3 -SubTopic 40 -Topic 350 -Publisher FASB -URI https://asc.fasb.org/1943274/2147476168/350-40-50-3 + Details
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