OTHER OPERATING STATEMENT DATA - SCHEDULE OF CHANGES IN PRESENT VALUE OF FUTURE INSURANCE PROFITS (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Movement in Present Value of Future Insurance Profits [Roll Forward]
Balance, beginning of year	$ 222.6	$ 249.4	$ 275.4
Amortization	(26.9)	(28.7)	(34.7)
Amounts related to changes in unrealized investment gains (losses) on fixed maturities, available for sale	16.5	1.9	8.7
Balance, end of year	$ 212.2	$ 222.6	$ 249.4

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Amount of amortization expense (reversal of expense) for present value of future profits of insurance contract acquired in business combination.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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-Section 50
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-URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 20
-Section S99
-Paragraph 2
-Subparagraph (2)
-URI https://asc.fasb.org/extlink&oid=122135039&loc=d3e569990-122904

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- Definition

Amount of increase (decrease) in the asset representing the present value of future profits.

+ References

No definition available.

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- Definition

Amount, after accumulated amortization, of present value of future profits of insurance contract acquired in business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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-Topic 944
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