LOANS - Interest Income Recognized for Non-Accrual Consumer Loans (Details) - Consumer loans - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Financing Receivable, Nonaccrual [Line Items]
Interest income recognized	$ 6	$ 6
Loans sold and/or reclassified to held-for-sale	32	59
In North America offices
Financing Receivable, Nonaccrual [Line Items]
Interest income recognized	3	4
In offices outside North America
Financing Receivable, Nonaccrual [Line Items]
Interest income recognized	3	2
Residential mortgages \| In North America offices
Financing Receivable, Nonaccrual [Line Items]
Interest income recognized	2	3
Residential mortgages \| In offices outside North America
Financing Receivable, Nonaccrual [Line Items]
Interest income recognized	2	2
Home equity loans \| In North America offices
Financing Receivable, Nonaccrual [Line Items]
Interest income recognized	1	1
Personal, small business and other \| In North America offices
Financing Receivable, Nonaccrual [Line Items]
Interest income recognized	0	0
Personal, small business and other \| In offices outside North America
Financing Receivable, Nonaccrual [Line Items]
Interest income recognized	$ 1	$ 0

Total amount of portfolio loans sold and or reclassified to loans held-for-sale during the period.

No definition available.

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- Definition

Amount of interest income on financing receivable on nonaccrual status.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-16

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-16

+ Details

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