INVESTMENTS - Effect of Loan Modifications (Details) - Transitional real estate loans $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)
Other-than-insignificant payment delays
Financing Receivable, Modified [Line Items]
Loan modification, amortized cost	$ 125.0	[1]
Loan modification, percent of total amortized cost	2.70%
Loan modification, deferral period	24 months
Other-than-insignificant payment delays and interest rate reduction
Financing Receivable, Modified [Line Items]
Loan modification, amortized cost	$ 278.0	[1]
Loan modification, percent of total amortized cost	5.90%
Loan modification, deferral period	44 months
Weighted-average interest rate before modification	8.00%
Weighted-average interest rate after modification	6.60%
Other-than-insignificant payment delays, principal forgiveness and interest rate reduction
Financing Receivable, Modified [Line Items]
Loan modification, amortized cost	$ 81.0	[1]
Loan modification, percent of total amortized cost	1.70%
Loan modification, deferral period	33 months
Weighted-average interest rate before modification	8.20%
Loan modification, principal forgiven	$ 1.3
Weighted-average interest rate after modification	7.30%

[1] Net of allowance for credit losses