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INVESTMENTS - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Debt Securities, Available-for-Sale [Line Items]
AFS Allowance for credit losses	$ 0		$ 0		$ 0
Gains or losses from the sale of AFS securities	0	$ 0	0	$ 0
Collateralized Mortgage-Backed Securities
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale, mortgage-backed securities with no stated maturities, amortized cost	162,000,000		162,000,000
Available-for-sale, mortgage-backed securities with no stated maturities, fair value	145,000,000		145,000,000
Municipal Bonds
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale, mortgage-backed securities with stated maturities after ten years, amortized cost	31,000,000		31,000,000
Available-for-sale, mortgage-backed securities with stated maturities after ten years, fair value	$ 29,000,000		$ 29,000,000

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- Definition

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing after tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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