LOANS - Consumer Loans Gross Credit Losses (Details) - Consumer $ in Millions	12 Months Ended
Dec. 31, 2023 USD ($)
Loans receivable
Total	$ 7,553
Residential first mortgages
Loans receivable
2023	0
2022	2
2021	1
2020	1
2019	5
Prior	41
Total	50
Home equity line of credit (pre-reset)
Loans receivable
Total	3
Home equity line of credit (post-reset)
Loans receivable
Total	0
Home equity term loans
Loans receivable
Revolving loans converted to term loans	4
Home equity loans
Loans receivable
Total	7
Credit cards
Loans receivable
Revolving loans converted to term loans	184
Total	6,575
Total credit cards
Loans receivable
Total	6,759
Personal, small business and other
Loans receivable
2023	162
2022	202
2021	106
2020	44
2019	51
Prior	172
Total	$ 737

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
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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