DERIVATIVES AND HEDGING ACTIVITIES - Cash Flow Hedges Narrative (Details) $ in Millions	12 Months Ended
Dec. 31, 2023 USD ($) DerivativeInstrument	Dec. 31, 2022 USD ($) DerivativeInstrument	Dec. 31, 2021 USD ($) DerivativeInstrument
DERIVATIVES AND HEDGING ACTIVITIES
Estimated reclassification as a decrease to interest expense during next twelve months	$ 6.4
Number of derivatives terminated \| DerivativeInstrument	0	0	34
Termination value of derivatives	$ 0.0		$ 785.0
Collateral received against obligations in net asset position	13.5	$ 17.8
Designated as Hedging Instrument \| Cash flow hedges
DERIVATIVES AND HEDGING ACTIVITIES
Clearing house related to the fair value derivatives	$ 4.9
Loss on termination of derivatives
DERIVATIVES AND HEDGING ACTIVITIES
Gain (loss) on termination of derivatives			$ (16.5)

The number of derivative instruments held terminated.

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The value of a terminated derivative instruments.

+ References

No definition available.

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- Definition

Amount payable to other broker-dealer and clearing organization, including, but not limited to, security failed-to-receive, deposit received for security loaned, open transaction, and floor-brokerage payable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Rule 15c3-1
-Number 240
-Section 15c3-1
-Publisher SEC

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- Definition

Amount of obligation to return cash collateral under master netting arrangements that have not been offset against derivative assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 55
-Paragraph 13
-SubTopic 20
-Topic 210
-Publisher FASB
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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

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-Topic 815
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The amount of net gain (loss) reclassified into earnings when interest rate cash flow hedge is discontinued because it is probable that the original forecasted transactions will not occur by the end of the original period or an additional two month time period.

+ References

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-Section 50
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- Definition

The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months.

+ References

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