BORROWINGS - Long-term Borrowings (Details) - Parent - USD ($)	Mar. 31, 2025	Mar. 12, 2025
Fixed-to-Floating Senior Notes at 5.231% | Senior Notes
Debt Instrument [Line Items]
Debt instrument, face amount		$ 500,000,000
Debt instrument, stated interest rate	5.231%	5.231%
Fixed-to-Fixed Subordinated Notes at 6.254% | Subordinated Debt
Debt Instrument [Line Items]
Debt instrument, face amount		$ 750,000,000
Debt instrument, stated interest rate	6.254%	6.254%