LOANS - Corporate Loans Gross Credit Losses (Details) - Corporate $ in Millions	12 Months Ended
Dec. 31, 2023 USD ($)
Loans receivable
2023	$ 28
2022	30
2021	1
2020	16
2019	0
Prior	21
Revolving line of credit arrangement	232
Total	328
Commercial and industrial
Loans receivable
2023	27
2022	20
2021	1
2020	1
2019	0
Prior	10
Revolving line of credit arrangement	130
Total	189
Financial institutions
Loans receivable
2023	1
2022	1
2021	0
2020	0
2019	0
Prior	0
Revolving line of credit arrangement	38
Total	40
Mortgage and real estate
Loans receivable
2023	0
2022	9
2021	0
2020	15
2019	0
Prior	11
Revolving line of credit arrangement	5
Total	40
Other
Loans receivable
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving line of credit arrangement	59
Total	$ 59

Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease.

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

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Amount, excluding accrued interest, of writeoff of financing receivable originated more than five years before current fiscal year. Excludes net investment in lease.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-5

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
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-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
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