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Financing Receivables - Allowance for Credit Losses (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Rollforward of allowance for credit losses |  |  |
Beginning balance | $ 59 | $ 50 |
Provisions | 8 | 13 | $ (11)
Charge-offs | (4) | (4) | (10)
Recoveries |  |  | 1
Other |  |  | 2
Ending balance | 63 | 59 | 50
Cumulative Effect, Period of Adoption, Adjusted Balance |  |  |
Rollforward of allowance for credit losses |  |  |
Beginning balance |  |  | 68
Commercial Loans |  |  |
Rollforward of allowance for credit losses |  |  |
Beginning balance | 54 | 47 |
Provisions | 2 | 10 | (13)
Charge-offs | (2) | (3) | (8)
Recoveries |  |  | 0
Other |  |  | 2
Ending balance | 54 | 54 | 47
Commercial Loans | Cumulative Effect, Period of Adoption, Adjusted Balance |  |  |
Rollforward of allowance for credit losses |  |  |
Beginning balance |  |  | 66
Commercial Loans | Receivables |  |  |
Financing receivables |  |  |
Accrued interest on loans | 19 | 17 |
Consumer Loans |  |  |
Rollforward of allowance for credit losses |  |  |
Beginning balance | 5 | 3 |
Provisions | 6 | 3 | 2
Charge-offs | (2) | (1) | (2)
Recoveries |  |  | 1
Other |  |  | 0
Ending balance | $ 9 | $ 5 | 3
Consumer Loans | Cumulative Effect, Period of Adoption, Adjusted Balance |  |  |
Rollforward of allowance for credit losses |  |  |
Beginning balance |  |  | $ 2

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- Definition Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Other Increase (Decrease) + References No definition available. + Details
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- Definition Amount, before allowance for credit loss, of accrued interest on financing receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-3B + Details
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- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479344/326-20-45-1 + Details
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- Definition Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 + Details
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- Definition Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 + Details
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- Definition Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 + Details
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