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Loan Sale and Servicing Activities and Variable Interest Entities (Principal Balance, Delinquent Loans (Loans 90 Days or More Past Due), and Net Charge-Offs Related to Serviced Loans) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Residential mortgage loans held for sale |  |  |  |  |
Total principal balance | $ 39,542 |  | $ 39,542 |  | $ 41,031
Delinquent loans | 324 |  | 324 |  | 346
Net charge-offs |  | $ 1 | 2 | $ 3 |
Commercial mortgage loans held for sale |  |  |  |  |
Total principal balance | 58,761 |  | 58,761 |  | 57,974
Delinquent loans |  |  |  |  |
Net charge-offs | $ 14 | $ 9 | $ 18 | $ 12 |

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- Definition Amount of credit loss after recoveries for transferred financial assets not recognized in the statement of financial position. + References No definition available. + Details
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- Definition This is the principal amount of loans (across all types of loans) that are overdue in payment by a set number of days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (e)(4) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481326/860-20-50-4 + Details
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- Definition This is the sum of principal amount outstanding for both securitized and unsecuritized loans of all types. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Subparagraph (a) -Paragraph 4 -SubTopic 20 -Topic 860 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481326/860-20-50-4 + Details
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- Details
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- Details
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