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INVESTMENTS (Net Investment Gains (Losses)) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Gross realized investment gains
Fixed maturities and short-term investments	$ 21,036	$ 39,926	$ 126,901	$ 130,874
Equity securities	4	556	5,006	24,514
Gross realized investment gains	21,040	40,482	131,907	155,388
Gross realized investment losses
Fixed maturities and short-term investments	(4,206)	(10,394)	(32,443)	(88,216)
Equity securities	0	(37)	(116)	(5,839)
Gross realized investment losses	(4,206)	(10,431)	(32,559)	(94,055)
Change in allowance for expected credit losses	(315)	3,759	(76)	(2,498)
Impairment losses	(22)	(184)	(22)	(1,486)
Change in fair value of investment derivatives	2,486	(1,346)	3,388	1,970
Net unrealized gains (losses) on equity securities	(8,051)	23,329	11,230	(13,542)
Total net investment gains	$ 10,932	$ 55,609	$ 113,868	$ 45,777

X

- Definition

This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities, the change in fair value of investment-related derivatives not designated as hedges and any hedge ineffectiveness recognized in earnings in relation to investment portfolio-related fair value hedges.

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Amount of realized gain on investment in debt and equity securities.

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Amount of realized loss on investment in debt and equity securities.

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Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments and relating to the entity's investment portfolio.

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- Definition

Amount of writeoff of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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Amount of expense (reversal of expense) for expected credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), from change in present value of expected cash flows.

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Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of realized gain from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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