Debt Securities, Available-For-Sale, Including Disposal Group And Discontinued Operations

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- Definition

Debt Securities, Available-For-Sale, Including Disposal Group And Discontinued Operations, Amortized Cost

+ References

No definition available.

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- Definition

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563

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- Definition

Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563

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- Definition

Amount 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 50
-Paragraph 9
-Subparagraph (a)
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454

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- Definition

Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (a)(2)
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-URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922888-210455

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Investments - Schedule of Fixed Maturities (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Fixed maturities, at amortized cost	$ 7,923.6
Gross unrealized gains	58.3
Gross unrealized loss	(785.1)
Fixed maturities, allowance for credit losses	(7.4)	$ (9.6)	$ 9.1	$ 7.5
Fixed maturities at fair value	7,189.4
Investments in Fixed Maturities
Debt Securities, Available-for-sale [Line Items]
Fixed maturities, at amortized cost		7,811.8
Gross unrealized gains		29.4
Gross unrealized loss		(936.8)
Fixed maturities at fair value		6,894.8
Debt securities, available-for-sale, unrealized loss position, accumulated loss	785.1	936.8
Investments in Fixed Maturities \| Investment-grade
Debt Securities, Available-for-sale [Line Items]
Debt securities, available-for-sale, unrealized loss position, accumulated loss		904.0
U.S. Government and Government Agencies and Authorities
Debt Securities, Available-for-sale [Line Items]
Fixed maturities, at amortized cost	633.6	612.5
Gross unrealized gains	3.4	1.3
Gross unrealized loss	(73.0)	(85.8)
Fixed maturities, allowance for credit losses	0.0	0.0
Fixed maturities at fair value	564.0	528.0
Debt securities, available-for-sale, unrealized loss position, accumulated loss	73.0	85.8
States and Political Subdivisions
Debt Securities, Available-for-sale [Line Items]
Fixed maturities, at amortized cost	1,794.8	1,797.6
Gross unrealized gains	23.1	10.3
Gross unrealized loss	(194.2)	(238.3)
Fixed maturities, allowance for credit losses	(0.8)	(0.7)
Fixed maturities at fair value	1,622.9	1,568.9
Debt securities, available-for-sale, unrealized loss position, accumulated loss	194.2	238.3
Foreign Governments
Debt Securities, Available-for-sale [Line Items]
Fixed maturities, at amortized cost	4.8	5.0
Gross unrealized gains	0.0	0.0
Gross unrealized loss	(0.8)	(0.9)
Fixed maturities, allowance for credit losses	0.0	0.0
Fixed maturities at fair value	4.0	4.1
Debt securities, available-for-sale, unrealized loss position, accumulated loss	0.8	0.9
Corporate Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Fixed maturities, at amortized cost	4,097.0	4,030.3
Gross unrealized gains	31.4	17.7
Gross unrealized loss	(418.5)	(499.7)
Fixed maturities, allowance for credit losses	(6.6)	(8.9)	9.1	$ 7.5
Fixed maturities at fair value	3,703.3	3,539.4
Debt securities, available-for-sale, unrealized loss position, accumulated loss	418.5	499.7
Redeemable Preferred Stocks
Debt Securities, Available-for-sale [Line Items]
Fixed maturities, at amortized cost	9.0	9.0
Gross unrealized gains	0.0	0.0
Gross unrealized loss	(1.0)	(1.0)
Fixed maturities, allowance for credit losses	0.0	0.0
Fixed maturities at fair value	8.0	8.0
Debt securities, available-for-sale, unrealized loss position, accumulated loss	1.0		$ 1.0
Collateralized Loan Obligations
Debt Securities, Available-for-sale [Line Items]
Fixed maturities, at amortized cost	1,033.0	1,014.7
Gross unrealized gains	0.1	0.0
Gross unrealized loss	(51.2)	(60.8)
Fixed maturities, allowance for credit losses	0.0	0.0
Fixed maturities at fair value	981.9	953.9
Debt securities, available-for-sale, unrealized loss position, accumulated loss	51.2	60.8
Other Mortgage- and Asset-backed
Debt Securities, Available-for-sale [Line Items]
Fixed maturities, at amortized cost	351.4	342.7
Gross unrealized gains	0.3	0.1
Gross unrealized loss	(46.4)	(50.3)
Fixed maturities, allowance for credit losses	0.0	0.0
Fixed maturities at fair value	305.3	292.5
Debt securities, available-for-sale, unrealized loss position, accumulated loss	$ 46.4	$ 50.3