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LOANS - Consumer Loans Gross Credit Losses (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |
Total | $ 2,726 | $ 2,609 | $ 8,375 | $ 8,014
Consumer loans |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |
Total | $ 2,612 | $ 2,496 | 7,999 | 7,594
Consumer loans | Residential mortgages |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |
Current year |  |  | 0 | 0
Prior year |  |  | 5 | 1
Two years prior |  |  | 3 | 0
Three years prior |  |  | 12 | 0
Four years prior |  |  | 4 | 0
Prior |  |  | 43 | 27
Total |  |  | 67 | 28
Consumer loans | Home equity loans |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |
Total |  |  | 5 | 7
Consumer loans | Home equity line of credit (pre-reset) |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |
Total |  |  | 4 | 5
Consumer loans | Home equity line of credit (post-reset) |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |
Total |  |  | 1 | 1
Consumer loans | Home equity term loans |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |
Revolving loans converted to term loans |  |  | 0 | 1
Consumer loans | Credit cards |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |
Total |  |  | 7,034 | 6,787
Consumer loans | Revolving loans converted to term loans |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |
Revolving loans converted to term loans |  |  | 230 | 188
Consumer loans | Total credit cards |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |
Total |  |  | 7,264 | 6,975
Consumer loans | Personal, small business and other |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |
Current year |  |  | 129 | 101
Prior year |  |  | 190 | 152
Two years prior |  |  | 129 | 131
Three years prior |  |  | 73 | 51
Four years prior |  |  | 29 | 20
Prior |  |  | 113 | 129
Total |  |  | $ 663 | $ 584

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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 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 Reference 2: 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 + Details
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- Definition Amount, excluding accrued interest, of writeoff of financing receivable originated more than five years before current fiscal year. 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 + Details
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