INVESTMENT SECURITIES - Equity Investments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Schedule of Equity Method Investments [Line Items]
Equity investments with a fair value	$ 18.2	$ 17.4
Spring EQ
Schedule of Equity Method Investments [Line Items]
Gain (loss) on sale of equity investments	$ 2.3	9.8
Spring EQ | Other Income
Schedule of Equity Method Investments [Line Items]
Gain (loss) on sale of equity investments		$ 2.5
Cred.ai
Schedule of Equity Method Investments [Line Items]
Gain (loss) on sale of equity investments			$ 6.0
Cred.ai | Other Income
Schedule of Equity Method Investments [Line Items]
Gain (loss) on sale of equity investments			$ 5.4