DERIVATIVE FINANCIAL INSTRUMENTS (Fair value hedges narrative) (Details) - Fair Value Hedging $ in Millions	3 Months Ended
Jun. 30, 2023 USD ($)
Interest Rate Swap, Conversion From Fixed To Floating Rates
Derivative [Line Items]
Derivative, notional amount, executed	$ 500.0
Interest Rate Swap, Protection For Unrealized Securities Losses
Derivative [Line Items]
Derivative, notional amount, executed	$ 838.1

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480237/815-40-50-5

Name:	us-gaap_DerivativeLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration