OTHER ASSETS AND OTHER LIABILITIES HELD FOR SALE (Details) - Held-for-sale - Birmingham Sale $ in Millions	Dec. 31, 2021 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loans	$ 199
Deposits	$ 51

Amount classified as accounts, notes and loans receivable attributable to disposal group held for sale or disposed of.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant