Kemper (KMPR) 10-K 9 Feb 23 2022 FY Annual report Financial data

Cover Page

Cover Page - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2022	Feb. 07, 2023	Jun. 30, 2022
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Current Fiscal Year End Date	--12-31
Document Period End Date	Dec. 31, 2022
Document Transition Report	false
Entity File Number	001-18298
Entity Registrant Name	Kemper Corporation
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	95-4255452
Entity Address, Address Line One	200 E. Randolph Street
Entity Address, Address Line Two	Suite 3300
Entity Address, City or Town	Chicago
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60601
City Area Code	312
Local Phone Number	661-4600
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 3
Entity Common Stock, Shares Outstanding (in shares)		63,959,923
Documents Incorporated by Reference	Portions of the Proxy Statement for the 2023 Annual Meeting of Shareholders are incorporated by reference into Part III.
Entity Central Index Key	0000860748
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Amendment Flag	false
Common Stock
Cover [Abstract]
Title of 12(b) Security	Common Stock, $0.10 par value per share
Trading Symbol	KMPR
Security Exchange Name	NYSE
Entity Listings [Line Items]
Trading Symbol	KMPR
Title of 12(b) Security	Common Stock, $0.10 par value per share
Security Exchange Name	NYSE
5.875% Fixed-Rate Reset Junior Subordinated Debentures due 2062
Cover [Abstract]
Title of 12(b) Security	5.875% Fixed-Rate Reset Junior Subordinated Debentures due 2062
Trading Symbol	KMPB
Security Exchange Name	NYSE
Entity Listings [Line Items]
Trading Symbol	KMPB
Title of 12(b) Security	5.875% Fixed-Rate Reset Junior Subordinated Debentures due 2062
Security Exchange Name	NYSE

Audit Information

Audit Information	12 Months Ended
	Dec. 31, 2022
Audit Information [Abstract]
Auditor Name	Deloitte & Touche LLP
Auditor Location	Chicago, Illinois
Auditor Firm ID	34

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues:
Earned Premiums	$ 5,266.3	$ 5,253.7	$ 4,672.2
Net Investment Income	422.6	427.3	348.2
Change in Value of Alternative Energy Partnership Investments	(19.9)	(61.2)	0
Other Income	9.2	4.8	94.6
(Loss) Income from Change in Fair Value of Equity and Convertible Securities	(79.9)	114.6	72.1
Net Realized Investment Gains	4.3	64.8	38.1
Net Impairment Losses Recognized in Earnings	(25.8)	(11)	(19.5)
Other-than-temporary Impairment Losses:
Total Revenues	5,576.8	5,793	5,205.7
Expenses:
Policyholders’ Benefits and Incurred Losses and Loss Adjustment Expenses	4,504.4	4,600.8	3,323.6
Insurance Expenses	1,200.6	1,218.1	1,100.5
Loss from Early Extinguishment of Debt	3.7	0	0
Interest and Other Expenses	257.6	219.4	271.5
Total Expenses	5,966.3	6,038.3	4,695.6
(Loss) Income before Income Taxes	(389.5)	(245.3)	510.1
Income Tax Benefit (Expense)	88.3	124.8	(100.2)
Net (Loss) Income	$ (301.2)	$ (120.5)	$ 409.9
Income (Loss) from Continuing Operations Per Unrestricted Share:
Basic (in dollars per share)			$ 6.24
Diluted (in dollars per share)			6.14
Net (Loss) Income Per Unrestricted Share:
Basic (in dollars per share)	$ (4.72)	$ (1.87)	6.24
Diluted (in dollars per share)	$ (4.72)	$ (1.87)	$ 6.14

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net (Loss) Income	$ (301.2)	$ (120.5)	$ 409.9
Decrease (Increase) in Net Unrecognized Postretirement Benefit Costs	18.9	(8.8)	70.2
Gain on Cash Flow Hedges	5.9	0.5	0.4
Other Comprehensive (Loss) Income Before Income Taxes	(1,524.4)	(294.8)	437.9
Other Comprehensive Income Tax Benefit (Expense)	320.3	62.4	(93.5)
Other Comprehensive (Loss) Income, Net of Taxes	(1,204.1)	(232.4)	344.4
Total Comprehensive (Loss) Income	(1,505.3)	(352.9)	754.3
No Credit Losses
Changes in Net Unrealized Holding Gains (Losses) on Investment Securities	(1,551.1)	(284.5)	369.9
Credit Losses
Changes in Net Unrealized Holding Gains (Losses) on Investment Securities	$ 1.9	$ (2)	$ (2.6)

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Investments:
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	$ 6,894.8	$ 7,986.9
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	243.2	830.6
Other Short-Term Investments	278.4	284.1
Other Investments	269.9	270
Total Investments	8,789.5	10,387.4
Cash	212.4	148.2
Receivables from Policyholders (Allowance for Credit Losses: 2022 - $13.1; 2021 - $13.6)	1,286.6	1,418.7	$ 1,194.5
Other Receivables	262.6	207.3
Deferred Policy Acquisition Costs	625.6	677.6
Goodwill	1,300.3	1,312
Current Income Tax Assets	167.6	173.1
Deferred Income Tax Assets	189.4	0
Other Assets	530	592.2
Total Assets	13,364	14,916.5
Insurance Reserves:
Life and Health	3,554	3,540.9
Property and Casualty	2,756.9	2,772.7
Total Insurance Reserves	6,310.9	6,313.6
Unearned Premiums	1,704.4	1,898.7
Policyholder Obligations	701.3	504
Deferred Income Tax Liabilities	0	227
Accrued Expenses and Other Liabilities	817.3	843.6
Long-term Debt, Current and Non-current, at Amortized Cost (Fair Value: 2022 - $1,195.1; 2021 - $1,152.1)	1,386.9	1,121.9
Total Liabilities	10,920.8	10,908.8
Shareholders’ Equity:
Common Stock, $0.10 Par Value, 100,000,000 Shares Authorized; 63,912,762 Shares Issued and Outstanding at December 31, 2022 and 63,684,628 Shares Issued and Outstanding at December 31, 2021	6.4	6.4
Paid-in Capital	1,812.7	1,790.7
Retained Earnings	1,380.1	1,762.5
Accumulated Other Comprehensive (Loss) Income	(756)	448.1
Total Shareholders’ Equity	2,443.2	4,007.7
Total Liabilities and Shareholders’ Equity	13,364	14,916.5
Equity Securities at Modified Cost	586.5	448.1
Convertible Securities at Fair Value	283.4	286.2
Alternative Energy Partnership Investments
Investments:
Equity Method Investments	16.3	39.6
Equity Method Limited Liability Investments
Investments:
Equity Method Investments	$ 217	$ 241.9

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Amortized cost of fixed maturities	$ 7,811.8	$ 7,358.2
Allowance for credit losses	(9.6)	(7.5)	$ (3.3)
Cost of equity securities	247.6	618.7
Premium Receivable, Allowance for Credit Loss	13.1	13.6	$ 20.9
Long-term Debt	$ 1,195.1	$ 1,152.1
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares outstanding (in shares)	63,912,762	63,684,628

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash Flows from Operating Activities:
Net (Loss) Income	$ (301.2)	$ (120.5)	$ 409.9
Adjustments to Reconcile Net (Loss) Income to Net Cash (Used in) Provided by Operating Activities:
Net Realized Gain on Sale of Investments	(4.3)	(64.8)	(38.1)
Impairment Losses	25.8	11	19.5
Depreciation and Amortization of Property, Equipment and Software	50.5	46.3	36.2
Amortization of Intangible Assets Acquired	20.4	53.5	18.8
Settlement Costs Related to Defined Benefit Pension Plan	0	0	64.1
Loss from Early Extinguishment of Debt	3.7	0	0
Change in Accumulated Undistributed Earnings of Equity Method Limited Liability Investments	(9.5)	(33.5)	(4)
Decrease (Increase) in Value of Equity and Convertible Securities	79.9	(114.6)	(72.1)
Changes in:
Receivables from Policyholders	129.4	(75.2)	(77.4)
Reinsurance Recoverables	(1.9)	20.6	16.8
Deferred Policy Acquisition Costs	13.8	(88.3)	(52.3)
Insurance Reserves	45.4	623.1	38.3
Unearned Premiums	(183.5)	105.9	69.6
Income Taxes	(87.5)	(163.1)	46.5
Other Assets and Liabilities	(11.2)	89.1	(27.8)
Net Cash (Used in) Provided by Operating Activities	(210.3)	350.7	448
Cash Flows from Investing Activities:
Proceeds from the Sales, Calls and Maturities of Fixed Maturities	1,295.5	1,388.9	972.4
Equity Securities	536	316.6	434.4
Real Estate Investments	0	8	5.4
Mortgage Loans	91.3	70.8	25.5
Other Investments	52.1	47.5	45.2
Fixed Maturities	(1,815.8)	(1,825.4)	(1,293.3)
Equity Securities	(58.9)	(124.3)	(319.1)
Real Estate Investments	(3.1)	(5.1)	(0.5)
Corporate-Owned Life Insurance	(110)	(100)	(100)
Mortgage Loans	(81.1)	(119.9)	(52.7)
Other Investments	(13)	(104.9)	(43.5)
Net Sales (Purchases) of Short-term Investments	6.1	687.2	(390.8)
Acquisition of Business, Net of Cash Acquired	0	(316.6)	0
Sale of Reserve National, Net of Cash Disposed	14.8	0	0
Acquisition of Software and Long-lived Assets	(30.8)	(57.8)	(53.4)
Other	8.5	16.8	13.4
Net Cash Used in Investing Activities	(108.4)	(118.2)	(757)
Cash Flows from Financing Activities:
Repayments of Long-term Debt	(280)	(50)	0
Proceeds from Issuance of 5.875% Fixed-Rate Reset Junior Subordinated Debentures Due 2062	145.6	0	0
Proceeds from Policyholder Contract Obligations	335.5	386.8	467
Repayment of Policyholder Contract Obligations	(138.2)	(394)	(304.8)
Proceeds from Shares Issued under Employee Stock Purchase Plan	4.9	5.4	4.4
Common Stock Repurchases	0	(161.7)	(110.4)
Dividends Paid	(79.7)	(80.6)	(78.9)
Other	0.6	3.7	5.4
Net Cash Provided by (Used in) Financing Activities	382.9	(290.4)	378.3
Net increase (decrease) in cash	64.2	(57.9)	69.3
Cash, Beginning of Year	148.2	206.1	136.8
Cash, End of Year	212.4	148.2	206.1
Senior Notes, 3.800 Percent Due February 23, 2032
Cash Flows from Financing Activities:
Proceeds from Issuance of 3.800% Senior Notes due February 23, 2032	396.3	0	0
Issue Fess	(1.2)	0	0
5.875% Fixed-Rate Reset Junior Subordinated Debentures due 2062
Cash Flows from Financing Activities:
Issue Fess	(0.9)	0	0
Senior Notes, 2.400 Percent Due September 30, 2030
Cash Flows from Financing Activities:
Proceeds from Issuance of 3.800% Senior Notes due February 23, 2032	0	0	396.8
Issue Fess	0	0	(1.2)
Alternative Energy Partnership Investments
Adjustments to Reconcile Net (Loss) Income to Net Cash (Used in) Provided by Operating Activities:
Loss from Change in Value of Alternative Energy Partnership Investments	$ 19.9	$ 61.2	$ 0

Condensed Consolidated Statemen

Condensed Consolidated Statements of Shareholders’ Equity - USD ($) $ in Millions	Total	Common Stock	Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive (Loss) Income	Previously Reported	Previously Reported Common Stock	Previously Reported Paid-in Capital	Previously Reported Retained Earnings	Previously Reported Accumulated Other Comprehensive (Loss) Income
Beginning balance (in shares) at Dec. 31, 2019							66,700,000
Beginning balance at Dec. 31, 2019						$ 3,972.3	$ 6.7	$ 1,819.2	$ 1,810.3	$ 336.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (Loss) Income	$ 409.9			$ 409.9
Other Comprehensive Income, Net of Taxes (Note 15)	344.4				$ 344.4
Cash Dividends and Dividend Equivalents to Shareholders	$ (79.4)			(79.4)
Dividends paid to shareholders per share (in dollars per share)	$ 1.20
Repurchases of Common Stock (in shares)	1,617,000
Equity-based Compensation Cost (Note 19)	$ 24.9		$ 24.9
Equity-based Awards, Net of Shares Exchanged (Note 11) (in shares)		300,000
Equity-based Awards, Net of Shares Exchanged (Note 19)	(2.7)	$ 0	0.9	(3.6)
Issuances of Common Stock (in shares)		1,600,000
Total Comprehensive (Loss) Income	754.3
Issuances of Common Stock	(110.4)	$ (0.2)	(44.2)	(66)
Shares Issued Under Employee Stock Purchase Plan (Note 16)	4.4		4.4
Ending balance (in shares) at Dec. 31, 2020							65,400,000
Ending balance at Dec. 31, 2020						$ 4,563.4	$ 6.5	$ 1,805.2	$ 2,071.2	$ 680.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (Loss) Income	(120.5)			(120.5)
Other Comprehensive Income, Net of Taxes (Note 15)	(232.4)				(232.4)
Cash Dividends and Dividend Equivalents to Shareholders	$ (81)			(81)
Stock Repurchased During Period, Value		$ (0.2)	(57.8)	(103.7)
Dividends paid to shareholders per share (in dollars per share)	$ 1.24
Repurchases of Common Stock (in shares)	2,085,000
Equity-based Compensation Cost (Note 19)	$ 37		37
Equity-based Awards, Net of Shares Exchanged (Note 11) (in shares)		300,000
Equity-based Awards, Net of Shares Exchanged (Note 19)	(2.5)	$ 0.1	0.9	(3.5)
Issuances of Common Stock (in shares)		100,000
Total Comprehensive (Loss) Income	(352.9)
Issuances of Common Stock	(161.7)
Stock Repurchased During Period, Shares		(2,100,000)
Shares Issued Under Employee Stock Purchase Plan (Note 16)	5.4		5.4
Ending balance (in shares) at Dec. 31, 2021		63,700,000
Ending balance at Dec. 31, 2021	4,007.7	$ 6.4	1,790.7	1,762.5	448.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (Loss) Income	(301.2)			(301.2)
Other Comprehensive Income, Net of Taxes (Note 15)	(1,204.1)				(1,204.1)
Cash Dividends and Dividend Equivalents to Shareholders	$ (80.4)			(80.4)
Dividends paid to shareholders per share (in dollars per share)	$ 1.24
Equity-based Compensation Cost (Note 19)	$ 17.7		17.7
Equity-based Awards, Net of Shares Exchanged (Note 11) (in shares)		100,000
Equity-based Awards, Net of Shares Exchanged (Note 19)	(1.4)	$ 0	(0.6)	(0.8)
Issuances of Common Stock (in shares)		100,000
Total Comprehensive (Loss) Income	(1,505.3)
Shares Issued Under Employee Stock Purchase Plan (Note 16)	4.9		4.9
Ending balance (in shares) at Dec. 31, 2022		63,900,000
Ending balance at Dec. 31, 2022	$ 2,443.2	$ 6.4	$ 1,812.7	$ 1,380.1	$ (756)

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Shareholders’ Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Stockholders' Equity [Abstract]
Dividends paid to shareholders per share (in dollars per share)	$ 1.24	$ 1.24	$ 1.20

Schedule 2 - Parent Company Fin

Schedule 2 - Parent Company Financial Statements - Balance Sheets (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Mar. 10, 2022	Feb. 15, 2022	Dec. 31, 2021	Sep. 22, 2020
Amortized cost of fixed maturities	$ 7,811.8			$ 7,358.2
Long-term Debt	$ 1,195.1			1,152.1
Senior Notes | Senior Notes, 4.35 Percent Due February 15, 2025
Stated interest rate, percentage	4.35%
Long-term debt, gross	$ 450
Senior Notes | Senior Notes, 2.400 Percent Due September 30, 2030
Stated interest rate, percentage					2.40%
Long-term debt, gross	400
Proceeds from debt, net of issuance costs	395.8
Senior Notes | Senior Notes, 3.800 Percent Due February 23, 2032
Stated interest rate, percentage			3.80%
Long-term debt, gross	400
Junior Debt | Senior Notes, 5.875 Percent Due March 15, 2062
Stated interest rate, percentage		5.875%
Parent Company
Amortized cost of fixed maturities	122.5			0.3
Parent Company | Senior Notes | Senior Notes, 4.35 Percent Due February 15, 2025
Long-term Debt	$ 438.5			481.4
Stated interest rate, percentage	4.35%
Parent Company | Senior Notes | Senior Notes, 2.400 Percent Due September 30, 2030
Long-term Debt	$ 310.3			387.8
Stated interest rate, percentage	2.40%
Parent Company | Senior Notes | Senior Notes, 3.800 Percent Due February 23, 2032
Long-term Debt	$ 336.2			0
Stated interest rate, percentage	3.80%
Parent Company | Junior Debt | Senior Notes, 5.875 Percent Due March 15, 2062
Long-term Debt	$ 110.1			$ 0
Stated interest rate, percentage	5.875%

Consolidated Statements of Ca_2

Consolidated Statements of Cash Flows (Parenthetical)	Mar. 10, 2022	Feb. 15, 2022
Senior Notes, 3.800 Percent Due February 23, 2032 | Senior Notes
Stated interest rate, percentage		3.80%
Senior Notes, 5.875 Percent Due March 15, 2062 | Junior Debt
Stated interest rate, percentage	5.875%

Basis of Presentation and Signi

Basis of Presentation and Significant Estimates	12 Months Ended
	Dec. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Significant Estimates	BASIS OF PRESENTATION AND SIGNIFICANT ESTIMATES The Consolidated Financial Statements include the accounts of Kemper Corporation (“Kemper”) and its subsidiaries which include property and casualty, life subsidiaries and a health subsidiary through the date of its sale of December 1, 2022 (collectively referred to herein as the “Company”). The accompanying financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”). All intercompany accounts and transactions have been eliminated. Periodically, Kemper may acquire an additional company which then becomes one of the various subsidiaries of Kemper. When an acquisition occurs, Kemper will include the results of the acquired company in the consolidated financial results from the date of its acquisition and forward. When a disposition occurs, Kemper will include the results of the disposed subsidiary in the consolidated financial results prior to the date of sale. In 2021, the Company elected to begin displaying its investments in Alternative Energy Partnerships in the Consolidated Statements of (Loss) Income and Consolidated Balance Sheets as Change in Value of Alternative Energy Partnership Investments and Alternative Energy Partnership Investments, respectively. These were previously reported in Equity Method Limited Liability Investments on the Consolidated Balance Sheets. Impacts to prior period presentation are not material. Use of Estimates The preparation of financial statements in conformity with GAAP requires the use of estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Many of these estimates and assumptions are common in the insurance and financial services industries; others are specific to the Company’s business and operations. Actual results could differ materially from those estimates and assumptions. The fair values of the Company’s Investments in Fixed Maturities, Investments in Convertible Securities at Fair Value, Investments in Equity Securities at Fair Value and Debt are estimated using a hierarchical framework which prioritizes and ranks market price observability. The carrying amounts reported in the Consolidated Balance Sheets approximate fair value for Cash, Short-term Investments and certain other assets and other liabilities because of their short-term nature. The actual value at which financial instruments could be sold or settled with a willing buyer or seller may differ from estimated fair values depending on a number of factors, including, but not limited to, current and future economic conditions, the quantity sold or settled, the presence of an active market and the availability of a willing buyer or seller. The Company’s portfolio also includes investments in Alternative Energy Partnerships that are accounted for under the Hypothetical Liquidation at Book Value (“HLBV”) method. Under the HLBV method, the amounts of income and loss attributed to investors reflect changes in the amounts the fund investors would hypothetically receive at each balance sheet date under the liquidation provisions of the contractual agreements of these funds. Attributing income and loss under the HLBV method requires the use of significant assumptions and forecasts to calculate the amounts that fund investors would receive upon a hypothetical liquidation. The process of estimating and establishing reserves for losses and loss adjustment expenses (“LAE”) for property and casualty insurance is inherently uncertain, and the actual ultimate net cost of known and unknown claims may vary materially from the estimated amounts reserved. The reserving process is particularly imprecise for claims involving long-tailed exposures, which may not be discovered or reported until years after the insurance policy period has ended. Management considers a variety of factors, including, but not limited to, past claims experience, current claim trends and relevant legal, economic and social conditions, in estimating reserves. A change in any one or more factors is likely to result in the ultimate net claim costs differing from the estimated reserve. Changes in such estimates may be material and would be recognized in the Consolidated Financial Statements when such estimates change. The process of determining whether an asset is impaired or recoverable relies on projections of future cash flows, operating results and market conditions. Projections are inherently uncertain, and, accordingly, actual future cash flows and operating results may differ materially from those projected. As a result, the Company’s assessment of the impairment of long-lived assets and recoverability of deferred tax assets is susceptible to the risk inherent in making such projections.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires the use of estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Many of these estimates and assumptions are common in the insurance and financial services industries; others are specific to the Company’s business and operations. Actual results could differ materially from those estimates and assumptions. The fair values of the Company’s Investments in Fixed Maturities, Investments in Convertible Securities at Fair Value, Investments in Equity Securities at Fair Value and Debt are estimated using a hierarchical framework which prioritizes and ranks market price observability. The carrying amounts reported in the Consolidated Balance Sheets approximate fair value for Cash, Short-term Investments and certain other assets and other liabilities because of their short-term nature. The actual value at which financial instruments could be sold or settled with a willing buyer or seller may differ from estimated fair values depending on a number of factors, including, but not limited to, current and future economic conditions, the quantity sold or settled, the presence of an active market and the availability of a willing buyer or seller. The Company’s portfolio also includes investments in Alternative Energy Partnerships that are accounted for under the Hypothetical Liquidation at Book Value (“HLBV”) method. Under the HLBV method, the amounts of income and loss attributed to investors reflect changes in the amounts the fund investors would hypothetically receive at each balance sheet date under the liquidation provisions of the contractual agreements of these funds. Attributing income and loss under the HLBV method requires the use of significant assumptions and forecasts to calculate the amounts that fund investors would receive upon a hypothetical liquidation. The process of estimating and establishing reserves for losses and loss adjustment expenses (“LAE”) for property and casualty insurance is inherently uncertain, and the actual ultimate net cost of known and unknown claims may vary materially from the estimated amounts reserved. The reserving process is particularly imprecise for claims involving long-tailed exposures, which may not be discovered or reported until years after the insurance policy period has ended. Management considers a variety of factors, including, but not limited to, past claims experience, current claim trends and relevant legal, economic and social conditions, in estimating reserves. A change in any one or more factors is likely to result in the ultimate net claim costs differing from the estimated reserve. Changes in such estimates may be material and would be recognized in the Consolidated Financial Statements when such estimates change. The process of determining whether an asset is impaired or recoverable relies on projections of future cash flows, operating results and market conditions. Projections are inherently uncertain, and, accordingly, actual future cash flows and operating results may differ materially from those projected. As a result, the Company’s assessment of the impairment of long-lived assets and recoverability of deferred tax assets is susceptible to the risk inherent in making such projections.

Summary of Accounting Policies

Summary of Accounting Policies and Accounting Changes	12 Months Ended
	Dec. 31, 2022
Accounting Policies [Abstract]
Summary of Accounting Policies and Accounting Changes	SUMMARY OF ACCOUNTING POLICIES AND ACCOUNTING CHANGES Investments Investments in Fixed Maturities include bonds, notes and redeemable preferred stocks. Investments in Fixed Maturities are classified as available for sale and reported at fair value. Net Investment Income, including amortization of purchased premiums and accretion of market discounts, on Investments in Fixed Maturities is recognized as interest over the period that it is earned using the effective yield method. Unrealized appreciation or depreciation, net of applicable deferred income taxes, on fixed maturities classified as available for sale is reported in Accumulated Other Comprehensive (Loss) Income (“AOCI”) included in Shareholders’ Equity. Equity investments include common stocks, non-redeemable preferred stocks, exchange traded funds, money market mutual funds and limited liability companies, and investment partnerships in which the Company’s interests are deemed minor. Equity investments with readily determinable fair values are recorded as Equity Securities at Fair Value on the Consolidated Balance Sheets. The changes in the fair value of such equity securities are reported in the Consolidated Statements of (Loss) Income. Dividend income on investments in common and non-redeemable preferred stocks is recognized on the ex-dividend date. Equity Method Limited Liability Investments include investments in limited liability investment companies and limited partnerships in which the Company’s interests are not deemed minor and are accounted for under the equity method of accounting whereby changes in net asset values (“NAV”) are recorded in Net Investment Income in the Consolidated Statements of (Loss) Income. Certain partnerships for which results are not available on a timely basis are reported on a lag. Investments in Alternative Energy Partnerships are measured using the HLBV method of equity method accounting whereby changes in the estimated amount the Company would receive upon the liquidation and distribution of the equity investment’s net assets are recorded in Net Investment Income. Tax credits allocated from investments in Alternative Energy Partnerships are recognized using the flow-through method, where credits are recorded as a reduction to tax expense in the period earned. Differences in the basis calculated under tax law and GAAP are recognized using the income statement approach, where basis differences are recorded to Income Tax Benefit (Expense) immediately, rather than deferred as adjustments to the carrying value of the asset. Certain partnerships for which results are not available on a timely basis are reported on a lag. Short-term Investments include certificates of deposit and other fixed maturities that mature within one year from the date of purchase, U.S. Treasury bills, money market mutual funds and overnight interest-bearing accounts. Short-term Investments are reported at cost, which approximates fair value. Company-Owned Life Insurance (“COLI”) is reported at cash surrender value with changes due to cost of insurance and investment experience reported in Net Investment Income in the Consolidated Statements of (Loss) Income. Loans to Policyholders are carried at unpaid principal balance. Other Investments primarily include Equity Securities at Modified Cost, Convertible Securities at Fair Value, Real Estate and Mortgage Loans. Equity Securities at Modified Cost do not have readily determinable fair values and are held at cost, less impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or similar investment of the same issuer. Investments in Convertible Securities include fixed maturities with equity conversion features. The Company has elected the fair value option method of accounting for investments in Convertible Securities and records Convertible Securities at fair value on the Consolidated Balance Sheets. Real Estate is carried at cost, net of accumulated depreciation. Real Estate is depreciated over the estimated useful life of the asset using the straight-line method of depreciation. Real Estate is evaluated for impairment when events or circumstances indicate the carrying value may not be recoverable. An impairment loss on real estate is recognized when the carrying value exceeds the sum of undiscounted projected future cash flows as well as the fair value, or, in the case of a property classified as held for sale, when the carrying value exceeds the fair value, net of costs to sell. Mortgage Loans are carried at amortized cost, net of a reserve for expected credit losses as applicable. Investments in Fixed Maturities - Impairment Losses For fixed maturity investments that the Company intends to sell or for which it is more likely than not that the Company will be required to sell before an anticipated recovery of value, the full amount of the impairment is reported in Impairment Losses. The Company writes down the investment’s amortized cost to its fair value, and will not adjust for any subsequent recoveries. NOTE 2. SUMMARY OF ACCOUNTING POLICIES AND ACCOUNTING CHANGES (Continued) For fixed maturity investments that the Company does not intend to sell or for which it is more likely than not that the Company will not be required to sell before an anticipated recovery of value, the Company will evaluate whether a decline in fair value below the amortized cost basis has occurred from a credit loss or other factors (non-credit related). Considerations in the credit loss assessment include (1) extent to which the fair value has been less than amortized cost, (2) conditions related to the security, an industry, or a geographic area, (3) payment structure of the investment and the likelihood of the issuer's ability to make contractual cash flows, (4) defaults or other collectability concerns related to the issuer, (5) changes in the ratings assigned by a rating agency and (6) other credit enhancements that affect the investment’s expected performance. Any increase or decrease in the expected allowance for credit losses related to investments is recognized in Impairment Losses. The expected allowance for credit losses is limited by the amount that the fair value is less than the amortized cost basis and is adjusted for any additional expected credit losses or subsequent recoveries. The amortized cost basis of the investment is not adjusted for the expected allowance for credit loss. The impairment related to other factors (non-credit related) is reported in Other Comprehensive (Loss) Income, net of applicable taxes. The Company reports accrued investment income separately for available-for-sale fixed maturity securities and has elected not to measure an allowance for credit losses on accrued investment income. Accrued investment income is written off through Impairment Losses at the time the issuer of the bond defaults or is expected to default on interest payments. Fair Value Measurements The Company uses a hierarchical framework which prioritizes and ranks the market observability of inputs used in fair value measurements. Market price observability is affected by a number of factors, including the type of asset or liability and the characteristics specific to the asset or liability being measured. Assets and liabilities with readily available, active, quoted market prices or for which fair value can be measured from actively quoted prices generally are deemed to have a higher degree of market price observability and a lesser degree of judgment used in measuring fair value. The Company classifies the inputs used to measure fair value into one of three levels as follows: • Level 1 — Quoted prices in an active market for identical assets or liabilities; • Level 2 — Observable inputs other than Level 1, quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets and liabilities in markets that are not active, and model-derived prices whose inputs are observable or whose significant value drivers are observable; and • Level 3 — Significant unobservable inputs for the asset or liability being measured. Observable inputs are based on market data obtained from independent sources, while unobservable inputs are based on the Company’s market assumptions. Unobservable inputs require significant management judgment or estimation. In some cases, the inputs used to measure an asset or liability may fall into different levels of the fair value hierarchy. In those cases, the fair value measurement is categorized in its entirety in the same level of the fair value hierarchy as the lowest level of input that is significant to the entire measurement. Such determination requires significant management judgment. Deferred Policy Acquisition Costs Costs directly associated with the successful acquisition of business, principally commissions and certain premium taxes and policy issuance costs, are deferred. Costs deferred on property and casualty insurance contracts and short-duration health insurance contracts are amortized over the period in which premiums are earned. Costs deferred on traditional life insurance products and other long-duration insurance contracts are primarily amortized over the anticipated premium-paying period of the related policies in proportion to the ratio of the annual premiums to the total premiums anticipated, which is estimated using the same assumptions used in calculating policy reserves. Goodwill The cost of an acquired entity over the fair value of net assets acquired is reported as Goodwill. Goodwill is not amortized, but rather is tested for recoverability annually or when certain triggering events require testing. Insurance Reserves Reserves for losses and LAE on property and casualty insurance coverage and health insurance coverage represent the estimated claim cost and loss adjustment expense necessary to cover the ultimate net cost of investigating and settling all losses incurred and unpaid at the end of any given accounting period. Such estimates are based on individual case estimates for NOTE 2. SUMMARY OF ACCOUNTING POLICIES AND ACCOUNTING CHANGES (Continued) reported claims and estimates for incurred but not reported (“IBNR”) losses, including expected development on reported claims. These estimates are adjusted in the aggregate for ultimate loss expectations based on historical experience patterns and current economic trends, with any change in the estimated ultimate liabilities being reported in the Consolidated Statements of (Loss) Income in the period of change. Changes in such estimates may be material. For traditional life insurance products, the reserves for future policy benefits are estimated on the net level premium method using assumptions as of the issue date for mortality, interest, policy lapses and expenses, including provisions for adverse deviations. These assumptions vary by such characteristics as plan, age at issue and policy duration. Mortality assumptions are based on the Company’s historical experience and industry standards. Interest rate assumptions principally range from 3% to 7%. Lapse rate assumptions are based on actual and industry experience. Insurance Reserves for life insurance products are comprised of reserves for future policy benefits plus an estimate of the Company’s liability for unpaid life insurance claims and claims adjustment expenses, which includes an estimate for IBNR life insurance claims. Prior to 2016, except when required by applicable law, the Company did not utilize the database of reported deaths maintained by the Social Security Administration or any other comparable database (a “Death Master File” or “DMF”) in its operations, including to determine its IBNR liability for life insurance products. Instead of using such a database, the Company calculated its IBNR liability for life insurance products using Company-specific historical information, which included analyzing average paid claims and the average lag between date of death and the date reported to the Company for claims for which proof of death had been provided. In 2016, the Company initiated a voluntary enhancement of its claims handling procedures for its life insurance policies. The Company is now utilizing a DMF to identify potential situations where the Company has yet to be notified of an insured’s death and, as appropriate, initiating an outreach process to identify and contact beneficiaries and settle claims. Policyholder Obligations Policyholder Obligations include Federal Home Loan Bank (“FHLB”) funding agreements used for spread lending purposes and universal life-type policyholder contracts and are stated at account balances. Receivables from Policyholders - Allowance for Expected Credit Losses The allowance for credit losses is a valuation account that is deducted from the receivables from policyholders based on the net amount expected to be collected on the insurance contract. Receivables from policyholders are charged off against the allowance when management believes the uncollectability of the receivable is confirmed. Expected recoveries do not exceed the aggregate of amounts previously charged-off and expected to be charged-off. Management estimates the allowance using relevant available information, from internal and external sources, related to past events, current conditions, and reasonable and supportable forecasts. Historical credit loss experience on the receivables from policyholders provide the basis for the estimation of expected credit losses. Adjustments to historical loss information are made for differences in current environmental conditions, primarily unemployment rates that could impact an insured’s ability to pay premiums. Other Receivables Other Receivables primarily include reinsurance recoverables, accrued investment income, ceded reinsurance reserves and receivables from limited liability investments and investments in partnerships. Reinsurance Recoverables were $39.6 million and $41.9 million at December 31, 2022 and 2021, respectively. Accrued Investment Income was $94.3 million and $79.6 million at December 31, 2022 and 2021, respectively. Ceded Reinsurance Reserves were $41.2 million and $42.1 million at December 31, 2022 and 2021, respectively. Receivables from limited liability investments and investments in partnerships were $35.2 million and $2.6 million at December 31, 2022 and 2021, respectively. Other Assets Other Assets primarily include property and equipment, internal use software, right-of-use assets, insurance licenses acquired in business combinations, the value of other intangible assets acquired and prepaid expenses. Property and equipment is depreciated over the useful lives of the assets, generally using the straight-line or double declining balance methods of depreciation depending on the asset involved. Internal use software is amortized over the useful life of the asset using the straight-line method of amortization and is evaluated for recoverability upon identification of impairment indications. Insurance licenses acquired in business combinations and other indefinite life intangibles are not amortized, but rather tested periodically for recoverability. NOTE 2. SUMMARY OF ACCOUNTING POLICIES AND ACCOUNTING CHANGES (Continued) The Company accounts for the value of business acquired (“VOBA”) based on actuarial estimates of the present value of future cash flows embedded in insurance in force as of an acquisition date. VOBA was $15.4 million and $19.0 million at December 31, 2022 and 2021, respectively. VOBA is amortized over the expected profit emergence period of the policies in force as of the acquisition date. The Company evaluates VOBA assets for recoverability annually. The Company accounts for the future profits embedded in customer relationships (“Customer Relationships”) acquired based on the present value of estimated future cash flows from such relationships. Customer Relationships were $2.7 million and $5.7 million at December 31, 2022 and 2021, respectively, and are amortized on a straight-line basis over the estimated useful life of the relationship. Customer Relationships are tested for recoverability using undiscounted projections of future cash flows and are written down to estimated fair value if the carrying value exceeds the sum of such projections of undiscounted cash flows. The Company accounts for the present value of the future profits embedded in broker or agent relationships acquired (“Agent Relationships”) based on the present value of estimated future cash flows from such acquired relationships or, using the cost recovery method, which estimates the ultimate cost to build a comparable distribution network. Agent Relationships were $50.6 million and $58.0 million at December 31, 2022 and 2021, respectively, and are amortized on a straight-line basis over the estimated useful life of the relationship. Agent Relationships are tested for recoverability using undiscounted projections of future cash flows and are written down to estimated fair value if the carrying value exceeds the sum of such projections of undiscounted cash flows. Accrued Expenses and Other Liabilities Accrued Expenses and Other Liabilities primarily include drafts payable, accrued salaries and commissions, pension benefits, postretirement medical benefits, lease liability and accrued taxes, licenses and fees. Recognition of Earned Premiums and Related Expenses Property and casualty insurance and short-duration health insurance premiums are deferred when written and recognized and earned ratably over the periods to which the premiums relate. Unearned Premiums represent the portion of the premiums written related to the unexpired portion of policies in force which has been deferred and is reported as a liability. The Company performs a premium deficiency analysis typically at a segment level, namely Specialty Property & Casualty Insurance and Preferred Property & Casualty Insurance, which is consistent with the manner in which the Company acquires and services policies and measures profitability. Anticipated investment income is included in this analysis. A premium deficiency is recognized when the sum of expected claim costs, claim adjustment expenses, unamortized deferred policy acquisition costs and maintenance costs exceeds the related unearned premiums by first reducing related deferred policy acquisition costs to an amount, but not below zero, at which the premium deficiency would not exist. If a premium deficiency remains after first reducing deferred policy acquisition costs, a premium deficiency reserve is established and reported as a liability in the Consolidated Financial Statements. Traditional life insurance premiums are recognized as revenue when due. Policyholders’ benefits are associated with related premiums to result in recognition of profits over the periods for which the benefits are provided using the net level premium method. Policyholders’ Benefits and Incurred Losses and Loss Adjustment Expenses include provisions for future policy benefits under life and certain accident and health insurance contracts and provisions for reported claims, estimates for IBNR claims and loss adjustment expenses. Benefit payments in excess of policy account balances are expensed. Reinsurance In the normal course of business, Kemper’s insurance subsidiaries reinsure certain risks above certain retention levels with other insurance enterprises. These reinsurance agreements do not relieve Kemper’s insurance subsidiaries of their legal obligations to the policyholder. Amounts recoverable from reinsurers are included in Other Receivables. Gains related to long-duration reinsurance contracts are deferred and amortized over the life of the underlying reinsured policies. Losses related to long-duration reinsurance contracts are recognized immediately. Any gain or loss associated with reinsurance agreements for which Kemper’s insurance subsidiaries have been legally relieved of their obligations to the policyholder is recognized in the period of relief. NOTE 2. SUMMARY OF ACCOUNTING POLICIES AND ACCOUNTING CHANGES (Continued) Income Taxes Deferred income tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred income tax assets and liabilities are measured using enacted tax rates in effect for the year in which those temporary differences are expected to be recovered or settled. A valuation allowance, if any, is maintained for the portion of deferred income tax assets that the Company does not expect to recover. Increases, if any, in the valuation allowance for deferred income tax assets are recognized as Income Tax Benefit (Expense). Decreases, if any, in the valuation allowance for deferred income tax assets are generally recognized as income tax benefit. The effect on deferred income tax assets and liabilities of a change in tax law including a change in tax rates is recognized in income from operations in the period in which the change is enacted. The Company reports a liability for unrecognized tax benefits, if any, resulting from uncertain tax positions taken, or expected to be taken, in an income tax return, if any. The Company recognizes interest and penalties, if any, related to unrecognized tax benefits in Income Tax Benefit (Expense). Premium Deficiency Commencing in 2022, the Company began including anticipated net investment income in the premium deficiency analysis performed at the Specialty Property & Casualty Insurance and Preferred Property & Casualty Insurance segments. The Company believes this accounting principle change is preferable as it best reflects the ultimate profitability of an insurance contract in using all cash flows from the in-force policies, inclusive of related investment income, and provides improved comparability with industry peers. This accounting principle change had no impact on the results of the premium deficiency analysis in prior periods presented. Company-Owned Life Insurance In 2022, the Company has elected to separately display its investments in Company-Owned Life Insurance (“COLI”) and Loans to Policyholders on the Consolidated Balance Sheets. These were previously reported in Other Investments on the Consolidated Balance Sheets. Adoption of New Accounting Guidance Guidance Adopted in 2022 The Company has adopted all recently issued accounting pronouncements with effective dates prior to January 1, 2023. There were no adoptions of such accounting pronouncements during the year ended December 31, 2022 that had a material impact on the Company’s Consolidated Financial Statements and Notes to the Consolidated Financial Statements. Guidance Not Yet Adopted

Income from Continuing Operatio

Income from Continuing Operations Per Unrestricted Share	12 Months Ended
	Dec. 31, 2022
Earnings Per Share [Abstract]
Income from Continuing Operations Per Unrestricted Share	The Company’s awards of deferred stock units granted to Kemper’s non-employee directors prior to 2019 contain rights to receive non-forfeitable dividend equivalents and participate in the undistributed earnings with common shareholders. Accordingly, the Company is required to apply the two-class method of computing basic and diluted earnings per share. A reconciliation of the numerator and denominator used in the calculation of Basic Net (Loss) Income Per Unrestricted Share and Diluted Net (Loss) Income Per Unrestricted Share for the years ended December 31, 2022, 2021 and 2020 is presented below. 2022 2021 2020 DOLLARS IN MILLIONS Net (Loss) Income $ (301.2) $ (120.5) $ 409.9 Less: Net Income Attributed to Participating Awards — — 0.4 Net (Loss) Income Attributed to Unrestricted Shares (301.2) (120.5) 409.5 Dilutive Effect on Income of Equity-based Compensation Equivalent Shares — — — Diluted Net (Loss) Income Attributed to Unrestricted Shares $ (301.2) $ (120.5) $ 409.5 SHARES IN THOUSANDS Weighted-average Unrestricted Shares Outstanding 63,825.5 64,264.4 65,636.1 Equity-based Compensation Equivalent Shares — — 1,093.7 Weighted-average Unrestricted Shares and Equivalent Shares Outstanding Assuming Dilution 63,825.5 64,264.4 66,729.8 PER UNRESTRICTED SHARE IN WHOLE DOLLARS Basic Net (Loss) Income Per Unrestricted Share $ (4.72) $ (1.87) $ 6.24 Diluted Net (Loss) Income Per Unrestricted Share $ (4.72) $ (1.87) $ 6.14 The number of shares of Kemper common stock that were excluded from the calculations of Equity-based Compensation Equivalent Shares and Weighted-average Unrestricted Shares and Equivalent Shares Outstanding Assuming Dilution for the years ended December 31, 2022, 2021 and 2020, because the effect of inclusion would be anti-dilutive, is presented below. SHARES IN THOUSANDS 2022 2021 2020 Equity-based Compensation Equivalent Shares 2,410.7 2,180.1 874.5 Weighted-average Unrestricted Shares and Equivalent Shares Outstanding Assuming Dilution 2,410.7 2,180.1 874.5

Acquisition of Business

Acquisition of Business	12 Months Ended
	Dec. 31, 2022
Business Combinations [Abstract]
Acquisition of Business	ACQUISITION OF BUSINESS Acquisition of American Access Casualty Corporation On April 1, 2021 Kemper completed the acquisition of American Access Casualty Company and its related captive insurance agency, Newins Insurance Agency Holdings, LLC, and its subsidiaries (collectively “AAC”). Pursuant to the agreement dated November 22, 2020, Kemper paid AAC’s equity holders total cash consideration of approximately $370.9 million. During 2022, the Company finalized its estimates of the fair value of assets acquired and liabilities assumed. There were no changes to the Company’s preliminary estimates or allocation of the purchase price to the assets acquired and liabilities assumed. NOTE 4 - ACQUISITION OF BUSINESS (Continued) Based on the Company’s final allocation of the purchase price, the fair value of the assets acquired and liabilities assumed were: (Dollars in Millions) Fixed Maturities at Fair Value $ 151.2 Equity Securities at Fair Value 82.4 Short-term Investments at Cost which Approximates Fair Value 100.1 Cash 54.3 Receivables from Policyholders 148.9 Other Receivables 2.0 Goodwill 198.0 Current Income Tax Assets 0.3 Other Assets 81.4 Property and Casualty Insurance Reserves (211.1) Unearned Premiums (177.8) Deferred Income Tax Liabilities (7.8) Accrued Expenses and Other Liabilities (51.0) Total Purchase Price $ 370.9 The factors that contributed to the recognition of goodwill include synergies from economies of scale within the underwriting and claims operations, acquiring a talented workforce and cost savings opportunities. Intangible Assets Intangible assets consist of capitalized costs, primarily of the estimated fair value of distribution, customer relationships, policies in force, trade names and licenses, and technology. The estimated useful lives of these assets range from 1 to 8 years. These assets are reported in Other Assets in the Consolidated Balance Sheets. Identifiable definite and indefinite lived intangible assets acquired consisted of the following: (Dollars in Millions) Definite Life Intangibles Value of Business Acquired $ 42.9 Customer Relationships 4.8 Agent Relationships 7.2 Internal-Use Software 6.5 Trade Names 1.8 Indefinite Life Intangible Assets Insurance Licenses $ 2.5 NOTE 4 - ACQUISITION OF BUSINESS (Continued) Unaudited Pro Forma Results The following unaudited pro forma information presents the Company’s results of operations as if the acquisition of AAC occurred on January 1, 2021. The adjustments to arrive at the pro forma information below included adjustments for the lost investment income on the cash used to fund the acquisition, amortization of the acquired intangible assets and the exclusion of certain acquisition related costs considered to be non-recurring in nature. Year Ended (Dollars in millions) Dec 31, Dec 31, Total Revenues $ 5,576.8 $ 5,884.2 Total Expenses 5,968.8 6,109.5 Loss from Continuing Operations before Income Taxes (392.0) (225.3) Net Loss $ (303.1) $ (105.1) The pro forma information is not necessarily indicative of the consolidated results of operations that might have been achieved had the transaction in fact occurred at the beginning of the periods presented, nor does the information project results for any future period. The pro forma information does not include the impact of any future cost savings or synergies that may be achieved as a result of the acquisition.

Dispositions

Dispositions	12 Months Ended
	Dec. 31, 2022
Discontinued Operations and Disposal Groups [Abstract]
Dispositions	DISPOSITIONS Disposition of Reserve National Insurance CompanyIn July 2022, the Company entered into a definitive agreement to sell Reserve National Insurance Company and its wholly-owned subsidiaries (collectively, “Reserve National”) to Medical Mutual of Ohio for approximately $90.0 million in total consideration. The sale closed on December 1, 2022. Subsequent adjustments to this purchase price could occur pursuant to the definitive agreement but are not expected to be material. In connection with the sale, a loss of $2.0 million, or $1.6 million net of income tax, was recorded for the year ended December 31, 2022, which is reflected in Interest and Other Expenses on the Consolidated Statements of (Loss) Income. Prior to measuring the final loss on sale, the goodwill assigned to the reporting unit was tested for impairment, which resulted in a total impairment loss of $11.4 million on the sale of Reserve National, $6.9 million of which was recognized in the fourth quarter of 2022 and also reflected in Interest and Other Expenses on the Consolidated Statements of (Loss) Income. Reserve National’s results of operations are reported in the Life & Health segment’s adjusted earnings through December 1, 2022.

Business Segments

Business Segments	12 Months Ended
	Dec. 31, 2022
Segment Reporting [Abstract]
Business Segments	BUSINESS SEGMENTS The Company is engaged, through its subsidiaries, in the property and casualty insurance and life and health insurance businesses. The Company conducts its operations through three operating segments: Specialty Property & Casualty Insurance, Preferred Property & Casualty Insurance, and Life & Health Insurance. The Specialty Property & Casualty Insurance segment’s principal products are specialty automobile insurance and commercial automobile insurance. The Preferred Property & Casualty Insurance segment’s principal products are preferred automobile insurance, homeowners insurance and other personal insurance. These products are distributed primarily through independent agents and brokers. The Life & Health Insurance segment’s principal products are individual life, accident, supplemental health and property insurance. These products are distributed by career agents employed by the Company. The Company’s earned premiums are derived in the United States. The accounting policies of the segments are the same as those described in Note 2, “Summary of Accounting Policies and Accounting Changes,” to the Consolidated Financial Statements. Capital expenditures for long-lived assets by operating segment are immaterial. It is the Company’s management practice to allocate certain corporate expenses, primarily compensation costs for corporate employees and related facility costs, included in Interest and Other Expenses in the Consolidated Statements of (Loss) Income to its insurance operations. The amount of such allocated corporate expenses was $127.8 million, $121.9 million and $109.5 million for the years ended December 31, 2022, 2021 and 2020, respectively. The Company does not allocate (Loss) Income from Change in Fair Value of Equity and Convertible Securities, Net Realized Gains on Sales of Investments, Impairment Losses, Acquisition and Disposition Related Transaction, Integration, Restructuring and Other Costs, Loss from Early Extinguishment of Debt, interest expense on debt or postretirement benefit plans, and actuarial gains and losses on its postretirement benefit plans to its operating segments. NOTE 6. BUSINESS SEGMENTS (Continued) Segment Assets at December 31, 2022 and 2021 were: DOLLARS IN MILLIONS 2022 2021 Specialty Property & Casualty Insurance $ 5,492.3 $ 5,936.5 Preferred Property & Casualty Insurance 1,175.3 1,230.1 Life & Health Insurance 4,850.8 6,062.6 Corporate and Other, Net 1,845.6 1,687.3 Total Assets $ 13,364.0 $ 14,916.5 Earned Premiums by product line for the years ended December 31, 2022, 2021 and 2020 were: DOLLARS IN MILLIONS 2022 2021 2020 Specialty Property & Casualty Insurance: Personal Automobile $ 3,496.7 $ 3,533.7 $ 3,031.3 Commercial Automobile 549.7 414.8 304.0 Preferred Property & Casualty Insurance: Preferred Automobile 363.7 410.5 431.7 Homeowners 200.0 207.3 220.7 Other Personal Lines 31.8 33.9 35.8 Life & Health Insurance: Life 405.7 401.7 385.7 Accident & Health 168.2 189.9 199.3 Property 50.5 61.9 63.7 Total Earned Premiums $ 5,266.3 $ 5,253.7 $ 4,672.2 NOTE 6. BUSINESS SEGMENTS (Continued) Segment Revenues, including a reconciliation to Total Revenues, for the years ended December 31, 2022, 2021 and 2020 were: DOLLARS IN MILLIONS 2022 2021 2020 Segment Revenues: Specialty Property & Casualty Insurance: Earned Premiums $ 4,046.4 $ 3,948.5 $ 3,335.3 Net Investment Income 140.7 152.5 114.1 Change in Value of Alternative Energy Partnership Investments (9.9) (29.0) — Other Income 6.0 4.1 1.8 Total Specialty Property & Casualty Insurance 4,183.2 4,076.1 3,451.2 Preferred Property & Casualty Insurance: Earned Premiums 595.5 651.7 688.2 Net Investment Income 49.7 68.6 37.7 Change in Value of Alternative Energy Partnership Investments (4.7) (16.3) — Other Income — — 0.1 Total Preferred Property & Casualty Insurance 640.5 704.0 726.0 Life & Health Insurance: Earned Premiums 624.4 653.5 648.7 Net Investment Income 216.5 202.7 198.8 Change in Value of Alternative Energy Partnership Investments (5.3) (15.8) — Other (Loss) Income (0.6) (1.3) 0.6 Total Life & Health Insurance 835.0 839.1 848.1 Total Segment Revenues 5,658.7 5,619.2 5,025.3 (Loss) Income from Change in Fair Value of Equity and Convertible Securities (79.9) 114.6 72.1 Net Realized Investment Gains 4.3 64.8 38.1 Net Impairment Losses Recognized in Earnings (25.8) (11.0) (19.5) Other 19.5 5.4 89.7 Total Revenues $ 5,576.8 $ 5,793.0 $ 5,205.7 NOTE 6. BUSINESS SEGMENTS (Continued) Segment Operating (Loss) Income, including a reconciliation to (Loss) Income before Income Taxes, for the years ended December 31, 2022, 2021 and 2020 was: DOLLARS IN MILLIONS 2022 2021 2020 Segment Operating (Loss) Income: Specialty Property & Casualty Insurance $ (196.9) $ (292.1) $ 420.9 Preferred Property & Casualty Insurance (36.4) (39.8) 1.8 Life & Health Insurance 59.5 10.5 71.2 Total Segment Operating (Loss) Income (173.8) (321.4) 493.9 Corporate and Other Operating (Loss) Income From: Partial Satisfaction of Judgment — — 89.4 Other (47.7) (48.4) (36.5) Corporate and Other Operating (Loss) Income (47.7) (48.4) 52.9 Adjusted Consolidated Operating (Loss) Income (221.5) (369.8) 546.8 (Loss) Income from Change in Fair Value of Equity and Convertible Securities (79.9) 114.6 72.1 Net Realized Investment Gains 4.3 64.8 38.1 Impairment Losses (25.8) (11.0) (19.5) Acquisition and Disposition Related Transaction, Integration, Restructuring and Other Costs (62.9) (43.9) (63.3) Pension Obligation Settlement Costs — — (64.1) Loss from Early Extinguishment of Debt (3.7) — — (Loss) Income before Income Taxes $ (389.5) $ (245.3) $ 510.1 Segment Net Operating (Loss) Income, including a reconciliation to Net (Loss) Income, for the years ended December 31, 2022, 2021 and 2020 was: DOLLARS IN MILLIONS 2022 2021 2020 Segment Net Operating (Loss) Income: Specialty Property & Casualty Insurance $ (147.4) $ (196.1) $ 337.9 Preferred Property & Casualty Insurance (25.9) (12.5) 3.5 Life & Health Insurance 54.2 28.2 60.0 Total Segment Net Operating (Loss) Income (119.1) (180.4) 401.4 Corporate and Other Net Operating (Loss) Income From: Partial Satisfaction of Judgment — — 70.6 Other (37.8) (38.4) (33.2) Total Corporate and Other Net Operating (Loss) Income (37.8) (38.4) 37.4 Adjusted Consolidated Net Operating (Loss) Income (156.9) (218.8) 438.8 Net (Loss) Income From: Change in Fair Value of Equity and Convertible Securities (63.1) 90.5 57.0 Net Realized Investment Gains 3.4 51.2 30.1 Impairment Losses (20.4) (8.7) (15.4) Acquisition and Disposition Related Transaction, Integration, Restructuring and Other Costs (61.3) (34.7) (50.0) Pension Obligation Settlement Costs — — (50.6) Loss from Early Extinguishment of Debt (2.9) — — Net (Loss) Income $ (301.2) $ (120.5) $ 409.9

Property and Casualty Insurance

Property and Casualty Insurance Reserves	12 Months Ended
	Dec. 31, 2022
Liability for Future Policy Benefits and Unpaid Claims and Claims Adjustment Expense [Abstract]
Property and Casualty Insurance Reserves	PROPERTY AND CASUALTY INSURANCE RESERVES The Company’s Property and Casualty Insurance Reserves are reported using the Company’s estimate of its ultimate liability for losses and LAE for claims that occurred prior to the end of any given accounting period but have not yet been paid. Such estimates are based on individual case estimates for reported claims and estimates for IBNR losses, including expected development on reported claims. Property and Casualty Insurance Reserves are recorded net of any expected salvage and subrogation recoveries. The determination of individual case reserves differs by line of business. For personal automobile insurance and commercial automobile insurance, case reserves are set primarily using statistical reserves that are based on studies of historical average paid amounts by state, coverage and product. However, when such reserves exceed certain thresholds they are set manually by adjusters. For preferred homeowners insurance and other personal insurance, case reserves are set by adjusters and are based on the adjusters’ estimates of the amount for which the claims will ultimately be paid. The Company’s actuaries estimate ultimate losses and LAE and, therefore, reserves at least quarterly for most product lines and/or coverage levels using accident quarters or years spanning 10 or more years, depending on the size of the product line and/or coverage level or emerging issues relating to them. The Company’s actuaries use a variety of generally accepted actuarial loss reserving estimation methodologies to estimate the ultimate losses and LAE for the current accident quarter or year and re-estimate the ultimate losses and LAE for previous accident quarters or years to determine if changes in the previous estimates of the ultimate losses and LAE are indicated by the most recent data. The key assumption in these estimation methodologies is that patterns observed in prior periods are indicative of how losses and LAE are expected to develop in the future and that such historical data can be used to predict and estimate ultimate losses and LAE. However, changes in the Company’s business processes, by their very nature, are likely to affect the development patterns, which generally results in the historical development factors becoming less reliable over time in predicting how losses and LAE will ultimately develop. The Company’s actuaries use professional judgment in determining how much weight to place on the development patterns based on the older historical data and how much weight to place on the development patterns based on more recent data. In some cases, the Company’s actuaries make adjustments to the loss reserving estimation methodologies to estimate ultimate losses and LAE. The Company’s actuaries’ quarterly or yearly selections are summed by product and/or coverage levels to create the actuarial indication of the ultimate losses and LAE. Paid amounts are then subtracted from the ultimates to compute the reserves for property and casualty insurance losses and LAE. These results are reviewed by the Company’s actuaries and corporate management who apply their collective judgment and determine the appropriate estimated level of reserves to record. Numerous factors are considered in this determination process, including, but not limited to, the assessed reliability of key loss trends and assumptions that may be significantly influencing the current actuarial indications, changes in claim handling practices or other changes that affect the timing of payment or development patterns, changes in the mix of business, the maturity of the accident year, pertinent trends observed over the recent past, the level of volatility within a particular line of business, the improvement or deterioration of actuarial indications in the current period as compared to prior periods, and the amount of reserves related to third party pools for which the Company has limited access to the underlying data and, accordingly, relies on calculations provided by such pools. The Company’s goal is to ensure that its total reserves for property and casualty insurance losses and LAE are adequate to cover all costs, while sustaining minimal variation from the time reserves for losses and LAE are initially estimated until losses and LAE are fully developed. Changes in the Company’s estimates of these losses and LAE over time, also referred to as “development,” will occur and may be material. The following tables contain information about incurred and paid claims development as of and for the year ended December 31, 2022, net of reinsurance and indemnification, as well as cumulative claim frequency and the total of IBNR liabilities, including expected development on reported claims included within the net incurred losses and allocated LAE amounts. The tables are grouped by major product line and, if relevant, coverage. The information about incurred and paid claims development for the years ended December 31, 2018 through 2021 is presented as supplementary information and is unaudited. NOTE 7. PROPERTY AND CASUALTY INSURANCE RESERVES (Continued) Specialty Personal Automobile Insurance—Liability 1 DOLLARS IN MILLIONS, EXCEPT CUMULATIVE INCURRED CLAIMS As of December 31, 2022 Incurred Losses and Allocated LAE, Net of Reinsurance Total of IBNR Liabilities Plus Expected Development on Reported Claims Cumulative Number of Reported Claims Accident Year 2018 2019 2020 2021 2022 2018 $ 1,324.0 $ 1,310.5 $ 1,307.8 $ 1,314.5 $ 1,316.1 $ 12.7 509,081 2019 1,461.5 1,494.7 1,506.1 1,508.3 27.2 548,271 2020 1,401.2 1,406.4 1,407.8 52.5 476,238 2021 1,856.9 1,824.7 152.4 583,773 2022 1,765.9 552.2 440,324 Total 7,822.8 Cumulative Paid Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31, Accident Year 2018 2019 2020 2021 2022 2018 $ 541.3 $ 1,050.8 $ 1,211.8 $ 1,265.5 $ 1,292.6 2019 567.3 1,200.7 1,382.0 1,452.3 2020 555.2 1,107.6 1,287.8 2021 657.1 1,429.4 2022 738.2 Total 6,200.3 Outstanding Loss and Allocated LAE Reserves on Accident Years before 2018, Net of Reinsurance 20.0 Loss and Allocated LAE Reserves, Net of Reinsurance $ 1,642.5 1 Tables retrospectively include Infinity and AAC’s historical incurred and paid accident year claim information for all periods presented. NOTE 7. PROPERTY AND CASUALTY INSURANCE RESERVES (Continued) Specialty Personal Automobile Insurance—Physical Damage 1 DOLLARS IN MILLIONS, EXCEPT CUMULATIVE INCURRED CLAIMS As of December 31, 2022 Incurred Losses and Allocated LAE, Net of Reinsurance Total of IBNR Liabilities Plus Expected Development on Reported Claims Cumulative Number of Reported Claims Accident Year 2018 2019 2020 2021 2022 2018 $ 558.9 $ 548.6 $ 548.0 $ 547.8 $ 548.1 $ (0.2) 309,625 2019 624.3 630.3 629.6 629.7 (9.7) 324,516 2020 650.5 659.5 659.5 (1.3) 296,417 2021 958.0 967.5 (12.2) 361,716 2022 993.5 25.8 297,398 Total 3,798.3 Cumulative Paid Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31, Accident Year 2018 2019 2020 2021 2022 2018 $ 509.4 $ 553.1 $ 549.0 $ 548.3 $ 548.2 2019 570.8 634.8 630.6 630.0 2020 585.5 663.8 659.7 2021 890.1 977.5 2022 921.9 Total 3,737.3 Outstanding Loss and Allocated LAE Reserves on Accident Years before 2018, Net of Reinsurance 1.7 Loss and Allocated LAE Reserves, Net of Reinsurance $ 62.7 1 Tables retrospectively include Infinity and AAC’s historical incurred and paid accident year claim information for all periods presented. NOTE 7. PROPERTY AND CASUALTY INSURANCE RESERVES (Continued) Commercial Automobile Insurance—Liability 1 DOLLARS IN MILLIONS, EXCEPT CUMULATIVE INCURRED CLAIMS As of December 31, 2022 Incurred Losses and Allocated LAE, Net of Reinsurance Total of IBNR Liabilities Plus Expected Development on Reported Claims Cumulative Number of Reported Claims Accident Year 2018 2019 2020 2021 2022 2018 $ 123.2 $ 116.5 $ 113.0 $ 110.9 $ 111.2 $ 3.9 20,213 2019 128.4 126.1 126.6 128.1 7.5 19,624 2020 140.5 152.0 154.0 15.3 19,581 2021 225.6 228.6 42.2 27,143 2022 305.1 153.0 28,674 Total 927.0 Cumulative Paid Losses and Allocated LAE, Net of Reinsurance and Indemnification For the Years Ended December 31, Accident Year 2018 2019 2020 2021 2022 2018 $ 36.8 $ 68.8 $ 88.1 $ 98.1 $ 104.3 2019 32.4 75.7 99.5 113.1 2020 37.0 87.6 111.7 2021 50.8 128.0 2022 72.2 Total 529.3 Outstanding Loss and Allocated LAE Reserves on Accident Years before 2018, Net of Reinsurance 16.6 Loss and Allocated LAE Reserves, Net of Reinsurance $ 414.3 1 Tables retrospectively include Infinity’s historical incurred and paid accident year claim information for all periods presented. NOTE 7. PROPERTY AND CASUALTY INSURANCE RESERVES (Continued) Commercial Automobile Insurance—Physical Damage 1 DOLLARS IN MILLIONS, EXCEPT CUMULATIVE INCURRED CLAIMS As of December 31, 2022 Incurred Losses and Allocated LAE, Net of Reinsurance Total of IBNR Liabilities Plus Expected Development on Reported Claims Cumulative Number of Reported Claims Accident Year 2018 2019 2020 2021 2022 2018 $ 23.6 $ 23.5 $ 23.6 $ 23.6 $ 23.6 $ 0.1 9,570 2019 26.0 27.1 26.9 26.8 (0.5) 9,311 2020 31.9 32.2 32.1 0.1 11,039 2021 52.4 51.9 (0.1) 17,687 2022 74.5 2.0 20,280 Total 208.9 Cumulative Paid Losses and Allocated LAE, Net of Reinsurance and Indemnification For the Years Ended December 31, Accident Year 2018 2019 2020 2021 2022 2018 $ 21.7 $ 23.6 $ 23.6 $ 23.6 $ 23.6 2019 23.0 26.9 26.8 26.8 2020 26.2 31.9 32.0 2021 43.3 51.9 2022 66.8 Total 201.1 Outstanding Loss and Allocated LAE Reserves on Accident Years before 2018, Net of Reinsurance 0.5 Loss and Allocated LAE Reserves, Net of Reinsurance $ 8.3 1 Tables retrospectively include Infinity’s historical incurred and paid accident year claim information for all periods presented. NOTE 7. PROPERTY AND CASUALTY INSURANCE RESERVES (Continued) Preferred Personal Automobile Insurance—Liability DOLLARS IN MILLIONS, EXCEPT CUMULATIVE INCURRED CLAIMS As of December 31, 2022 Incurred Losses and Allocated LAE, Net of Reinsurance Total of IBNR Liabilities Plus Expected Development on Reported Claims Cumulative Number of Reported Claims Accident Year 2018 2019 2020 2021 2022 2018 $ 157.6 $ 156.3 $ 161.7 $ 163.4 $ 163.4 $ 1.1 31,701 2019 172.2 195.5 200.0 201.8 2.7 34,586 2020 148.9 153.6 151.8 7.0 24,746 2021 176.9 179.8 21.9 27,449 2022 165.0 56.1 22,833 Total 861.8 Cumulative Paid Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31, Accident Year 2018 2019 2020 2021 2022 2018 $ 55.5 $ 107.6 $ 132.7 $ 147.4 $ 155.8 2019 62.7 127.9 160.8 181.1 2020 44.4 92.8 117.7 2021 50.3 106.1 2022 55.0 Total 615.7 Outstanding Loss and Allocated LAE Reserves on Accident Years before 2018, Net of Reinsurance 8.7 Loss and Allocated LAE Reserves, Net of Reinsurance $ 254.8 NOTE 7. PROPERTY AND CASUALTY INSURANCE RESERVES (Continued) Preferred Personal Automobile Insurance—Physical Damage DOLLARS IN MILLIONS, EXCEPT CUMULATIVE INCURRED CLAIMS As of December 31, 2022 Incurred Losses and Allocated LAE, Net of Reinsurance Total of IBNR Liabilities Plus Expected Development on Reported Claims Cumulative Number of Reported Claims Accident Year 2018 2019 2020 2021 2022 2018 $ 113.9 $ 111.0 $ 110.4 $ 110.4 $ 110.3 $ 0.1 61,733 2019 126.4 125.8 125.9 125.8 0.4 67,101 2020 96.1 98.0 97.9 0.3 47,639 2021 118.5 117.9 (0.2) 53,626 2022 110.9 (2.7) 45,908 Total 562.8 Cumulative Paid Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31, Accident Year 2018 2019 2020 2021 2022 2018 $ 107.2 $ 111.4 $ 110.4 $ 110.3 $ 110.2 2019 120.7 126.5 125.6 125.4 2020 90.9 98.4 97.6 2021 113.1 118.1 2022 108.7 Total 560.0 Outstanding Loss and Allocated LAE Reserves on Accident Years before 2018, Net of Reinsurance — Loss and Allocated LAE Reserves, Net of Reinsurance $ 2.8 NOTE 7. PROPERTY AND CASUALTY INSURANCE RESERVES (Continued) Homeowners Insurance DOLLARS IN MILLIONS, EXCEPT CUMULATIVE INCURRED CLAIMS As of December 31, 2022 Incurred Losses and Allocated LAE, Net of Reinsurance Total of IBNR Liabilities Plus Expected Development on Reported Claims Cumulative Number of Reported Claims Accident Year 2018 2019 2020 2021 2022 2018 $ 185.9 $ 183.0 $ 183.6 $ 185.3 $ 185.0 $ 4.5 16,065 2019 162.9 161.8 163.1 162.8 2.1 14,558 2020 157.0 149.8 144.6 3.0 14,036 2021 149.9 149.8 7.8 13,590 2022 142.7 10.0 10,304 Total 784.9 Cumulative Paid Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31, Accident Year 2018 2019 2020 2021 2022 2018 $ 127.4 $ 180.2 $ 180.0 $ 183.1 $ 183.6 2019 111.1 150.4 157.7 159.5 2020 94.6 130.8 137.4 2021 100.6 132.6 2022 97.0 Total 710.1 Outstanding Loss and Allocated LAE Reserves on Accident Years before 2018, Net of Reinsurance 3.5 Loss and Allocated LAE Reserves, Net of Reinsurance $ 78.3 The claim counts in the preceding tables are cumulative reported claim counts as of December 31, 2022 and are equal to the sum of cumulative open and cumulative closed claims, including claims closed without payment. Certain product lines, particularly the Company’s specialty personal automobile insurance, tend to have a higher percentage of claims closed without payment. The Company's claims associated with automobile insurance are counted at the feature level. As such, each claimant and each coverage is counted separately. For example, if for one occurrence, the Company's policyholder is at fault for damage to his/her own vehicle, another party's vehicle and three injured parties, there may be five features—three for bodily injury liability, one for property damage liability and one for first-party collision coverage. There may also be another feature for first-party medical payments. NOTE 7. PROPERTY AND CASUALTY INSURANCE RESERVES (Continued) The following table reconciles the net incurred and paid claims development tables presented above to the Company's liability for Property and Casualty Insurance Reserves included in the Consolidated Balance Sheets at December 31, 2022. DOLLARS IN MILLIONS 2022 Property and Casualty Insurance Reserves, Net of Reinsurance: Specialty Personal Automobile Insurance—Liability $ 1,642.5 Specialty Personal Automobile Insurance—Physical Damage 62.7 Commercial Automobile Insurance—Liability 414.3 Commercial Automobile Insurance—Physical Damage 8.3 Preferred Personal Automobile Insurance—Liability 254.8 Preferred Personal Automobile Insurance—Physical Damage 2.8 Homeowners Insurance 78.3 Other 44.1 Total $ 2,507.8 Reinsurance Recoverables on Unpaid Losses and Allocated LAE: Specialty Personal Automobile Insurance—Liability $ 1.5 Specialty Personal Automobile Insurance—Physical Damage — Commercial Automobile Insurance—Liability 19.2 Commercial Automobile Insurance—Physical Damage — Preferred Personal Automobile Insurance—Liability 10.1 Preferred Personal Automobile Insurance—Physical Damage — Homeowners Insurance 4.9 Other 3.9 Total 39.6 Unallocated LAE 209.5 Property and Casualty Insurance Reserves, Gross of Reinsurance $ 2,756.9 The following is supplementary information about average historical claims duration as of December 31, 2022. Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance (Unaudited) Years 1 2 3 4 5 Specialty Personal Automobile Insurance—Liability 39.2 % 79.1 % 91.7 % 96.2 % 98.2 % Specialty Personal Automobile Insurance—Physical Damage 91.4 100.9 100.1 100.0 100.0 Commercial Automobile Insurance—Liability 25.7 58.5 76.5 88.3 93.8 Commercial Automobile Insurance—Physical Damage 86.4 99.8 99.8 99.9 99.9 Preferred Personal Automobile Insurance—Liability 31.1 62.3 79.5 90.0 95.3 Preferred Personal Automobile Insurance—Physical Damage 96.0 100.5 99.8 99.8 99.9 Homeowners Insurance 67.5 92.2 96.4 98.5 99.3 NOTE 7. PROPERTY AND CASUALTY INSURANCE RESERVES (Continued) Property and Casualty Insurance Reserve activity for the years ended December 31, 2022, 2021 and 2020 was: DOLLARS IN MILLIONS 2022 2021 2020 Property and Casualty Insurance Reserves: Gross of Reinsurance at Beginning of Year $ 2,772.7 $ 1,982.5 $ 1,969.8 Less Reinsurance Recoverables at Beginning of Year 41.9 50.1 65.6 Property and Casualty Insurance Reserves, Net of Reinsurance at Beginning of Year 2,730.8 1,932.4 1,904.2 Property and Casualty Insurance Reserves Acquired, Net of Reinsurance — 211.1 — Incurred Losses and LAE related to: Current Year 4,103.3 4,052.7 2,873.6 Prior Years (14.6) 106.7 36.4 Total Incurred Losses and LAE 4,088.7 4,159.4 2,910.0 Paid Losses and LAE related to: Current Year: 2,460.5 2,303.4 1,679.1 Prior Years 1,641.7 1,268.7 1,202.7 Total Paid Losses and LAE 4,102.2 3,572.1 2,881.8 Property and Casualty Insurance Reserves, Net of Reinsurance at End of Year 2,717.3 2,730.8 1,932.4 Plus Reinsurance Recoverables at End of Year 39.6 41.9 50.1 Property and Casualty Insurance Reserves, Gross of Reinsurance at End of Year $ 2,756.9 $ 2,772.7 $ 1,982.5 Property and Casualty Insurance Reserves are estimated based on historical experience patterns and current economic trends. Actual loss experience and loss trends are likely to differ from these historical experience patterns and economic conditions. Loss experience and loss trends emerge over several years from the dates of loss inception. The Company monitors such emerging loss trends on a quarterly basis. Changes in such estimates are included in the Consolidated Statements of (Loss) Income in the period of change. In 2022, the Company decreased its property and casualty insurance reserves by $14.6 million to recognize favorable development of loss and LAE reserves from prior accident years. Specialty Personal Automobile insurance loss and LAE reserves developed favorably by $17.6 million due primarily to the emergence of more favorable loss patterns than expected for liability and physical damage insurance. Commercial Automobile insurance loss and LAE reserves developed adversely by $3.6 million due primarily to the emergence of less favorable loss patterns than expected for liability insurance. Preferred Personal Automobile insurance loss and LAE reserves developed adversely by $1.8 million due primarily to the emergence of less favorable loss patterns than expected for liability insurance. Homeowners insurance loss and LAE reserves developed favorably by $7.6 million due primarily to the emergence of more favorable loss patterns than expected. Other personal lines loss and LAE reserves developed adversely by $5.2 million due primarily to the emergence of less favorable loss patterns than expected for prior accident years. In 2021, the Company increased its property and casualty insurance reserves by $106.7 million to recognize adverse development of loss and LAE reserves from prior accident years. Specialty Personal Automobile insurance loss and LAE reserves developed adversely by $85.3 million due primarily to legal developments and increased severity in personal injury protection coverage in Florida and other liability coverages. Commercial Automobile insurance loss and LAE reserves included adverse development of $12.4 million due primarily to the emergence of less favorable loss patterns than expected for liability insurance. Preferred Personal Automobile insurance loss and LAE reserves developed adversely by $12.1 million due primarily to the emergence of less favorable loss patterns than expected for liability insurance. Homeowners insurance loss and LAE reserves developed favorably by $6.5 million due primarily to the emergence of more favorable loss patterns than expected. Other personal lines loss and LAE reserves developed adversely by $3.4 million due primarily to the emergence of less favorable loss patterns than expected for prior accident years. NOTE 7. PROPERTY AND CASUALTY INSURANCE RESERVES (Continued) In 2020, the Company increased its property and casualty insurance reserves by $36.4 million to recognize adverse development of loss and LAE reserves from prior accident years. Specialty Personal Automobile insurance loss and LAE reserves developed adversely by $28.2 million due primarily to the emergence of less favorable loss patterns than expected for both liability and physical damage insurance. Commercial Automobile insurance loss and LAE reserves included favorable development of $12.9 million due primarily to the emergence of more favorable loss patterns than expected for liability insurance. Preferred Personal Automobile insurance loss and LAE reserves developed adversely by $26.7 million due primarily to the emergence of less favorable loss patterns than expected for liability insurance. Homeowners insurance loss and LAE reserves developed favorably by $2.1 million due primarily to the emergence of more favorable loss patterns than expected. Other personal lines loss and LAE reserves developed favorably by $3.5 million due primarily to the emergence of more favorable loss patterns than expected for prior accident years. The Company cannot predict whether loss and LAE reserves will develop favorably or unfavorably from the amounts reported in the Consolidated Financial Statements. The Company believes that any such development will not have a material effect on the Company’s consolidated financial position, but could have a material effect on the Company’s consolidated financial results for a given period. Reinsurance recoverables on property and casualty insurance reserves were $39.6 million and $41.9 million at December 31, 2022 and 2021, respectively. These recoverables are concentrated with several reinsurers, the majority of which are highly rated by one or more of the principal investor and/or insurance company rating agencies. While most of these recoverables were unsecured at December 31, 2022 and 2021, the agreements with the reinsurers generally provide for some form of collateralization upon the occurrence of certain events. Receivables from Policyholders - Allowance for Expected Credit Losses The following table presents receivables from policyholders, net of the allowance for expected credit losses including a rollforward of changes in the allowance for expected credit losses for the year ended December 31, 2022. (Dollars in Millions) Receivables from Policyholders, Net of Allowance for Expected Credit Losses Allowance for Expected Credit Losses Balance at Beginning of Year $ 1,418.7 $ 13.6 Provision for Expected Credit Losses 48.0 Write-offs of Uncollectible Receivables from Policyholders (48.5) Balance at End of Year $ 1,286.6 $ 13.1 The following table presents receivables from policyholders, net of the allowance for expected credit losses including a rollforward of changes in the allowance for expected credit losses for the year ended December 31, 2021. (Dollars in Millions) Receivables from Policyholders, Net of Allowance for Expected Credit Losses Allowance for Expected Credit Losses Balance at Beginning of Year $ 1,194.5 $ 20.9 Provision for Expected Credit Losses 50.5 Write-offs of Uncollectible Receivables from Policyholders (57.8) Balance at End of Year $ 1,418.7 $ 13.6

Insurance Expenses

Insurance Expenses	12 Months Ended
	Dec. 31, 2022
Insurance Expenses [Abstract]
Insurance Expenses	NOTE 8. INSURANCE EXPENSES Insurance Expenses for the years ended December 31, 2022, 2021 and 2020 were: DOLLARS IN MILLIONS 2022 2021 2020 Commissions $ 724.8 $ 817.6 $ 745.8 General Expenses 358.4 339.5 307.4 Premium Tax Expense 99.5 104.3 94.2 Total Costs Incurred 1,182.7 1,261.4 1,147.4 Policy Acquisition Costs: Deferred (691.5) (772.6) (693.4) Amortized 705.3 684.3 641.8 Net Policy Acquisition Costs Amortized (Deferred) 13.8 (88.3) (51.6) Amortization of VOBA 4.1 45.0 4.7 Insurance Expenses $ 1,200.6 $ 1,218.1 $ 1,100.5 Commissions for servicing policies are expensed as incurred, rather than deferred and amortized. The Company recorded amortization of Deferred Policy Acquisition Costs of $705.3 million, $684.3 million and $641.8 million for the years ended December 31, 2022, 2021 and 2020, respectively.

Investments

Investments	12 Months Ended
	Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Investments	INVESTMENTS Fixed Maturities The amortized cost and estimated fair values of the Company’s Investments in Fixed Maturities at December 31, 2022 were: DOLLARS IN MILLIONS Amortized Gross Unrealized Allowance for Expected Credit Losses Fair Value Gains Losses U.S. Government and Government Agencies and Authorities $ 612.5 $ 1.3 $ (85.8) $ — $ 528.0 States and Political Subdivisions 1,797.6 10.3 (238.3) (0.7) 1,568.9 Foreign Governments 5.0 — (0.9) — 4.1 Corporate Securities: Bonds and Notes 4,030.3 17.7 (499.7) (8.9) 3,539.4 Redeemable Preferred Stocks 9.0 — (1.0) — 8.0 Collateralized Loan Obligations 1,014.7 — (60.8) — 953.9 Other Mortgage- and Asset-backed 342.7 0.1 (50.3) — 292.5 Investments in Fixed Maturities $ 7,811.8 $ 29.4 $ (936.8) $ (9.6) $ 6,894.8 NOTE 9. INVESTMENTS (Continued) The amortized cost and estimated fair values of the Company’s Investments in Fixed Maturities at December 31, 2021 were: Amortized Gross Unrealized Allowance for Expected Credit Losses Fair Value DOLLARS IN MILLIONS Gains Losses U.S. Government and Government Agencies and Authorities $ 610.1 $ 29.2 $ (1.9) $ — $ 637.4 States and Political Subdivisions 1,752.5 144.6 (7.0) — 1,890.1 Foreign Governments 6.7 — (1.2) — 5.5 Corporate Securities: Bonds and Notes 3,929.0 481.4 (16.0) (7.5) 4,386.9 Redeemable Preferred Stocks 7.0 0.4 — 7.4 Collateralized Loan Obligations 756.0 0.9 (4.8) — 752.1 Other Mortgage- and Asset-backed 296.9 12.4 (1.8) — 307.5 Investments in Fixed Maturities $ 7,358.2 $ 668.9 $ (32.7) $ (7.5) $ 7,986.9 Other Receivables included $5.8 million and $0.6 million of unsettled sales of Investments in Fixed Maturities at December 31, 2022 and December 31, 2021, respectively. Accrued Expenses and Other Liabilities included unsettled purchases of Investments in Fixed Maturities of $25.9 million and $12.7 million at December 31, 2022 and 2021, respectively. The amortized cost and estimated fair values of the Company’s Investments in Fixed Maturities at December 31, 2022 by contractual maturity were: DOLLARS IN MILLIONS Amortized Cost Fair Value Due in One Year or Less $ 151.1 $ 146.9 Due after One Year to Five Years 991.8 952.3 Due after Five Years to Ten Years 1,231.1 1,071.9 Due after Ten Years 3,598.8 3,070.3 Mortgage- and Asset-backed Securities Not Due at a Single Maturity Date 1,839.0 1,653.4 Investments in Fixed Maturities $ 7,811.8 $ 6,894.8 The expected maturities of the Company’s Investments in Fixed Maturities may differ from the contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties. Investments in Mortgage- and Asset-backed Securities Not Due at a Single Maturity Date at December 31, 2022 consisted of securities issued by the Government National Mortgage Association with a fair value of $245.6 million, securities issued by the Federal National Mortgage Association with a fair value of $95.5 million, securities issued by the Federal Home Loan Mortgage Corporation with a fair value of $65.9 million and securities of other non-governmental issuers with a fair value of $1,246.5 million. NOTE 9. INVESTMENTS (Continued) An aging of unrealized losses on the Company’s Investments in Fixed Maturities at December 31, 2022 is presented below. DOLLARS IN MILLIONS Less Than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized Fixed Maturities: U.S. Government and Government Agencies and Authorities $ 337.3 $ (49.3) $ 126.5 $ (36.5) $ 463.8 $ (85.8) States and Political Subdivisions 854.7 (140.6) 276.8 (97.7) 1,131.5 (238.3) Foreign Governments 0.1 — 2.6 (0.9) 2.7 (0.9) Corporate Securities: Bonds and Notes 2,730.6 (373.9) 424.4 (125.8) 3,155.0 (499.7) Redeemable Preferred Stocks 7.7 (1.0) — — 7.7 (1.0) Collateralized Loan Obligations 568.2 (34.2) 373.9 (26.6) 942.1 (60.8) Other Mortgage- and Asset-backed 205.4 (28.9) 79.5 (21.4) 284.9 (50.3) Total Fixed Maturities $ 4,704.0 $ (627.9) $ 1,283.7 $ (308.9) $ 5,987.7 $ (936.8) The Company regularly reviews its fixed maturity investment portfolio for factors that may indicate that a decline in fair value of an investment has resulted from an expected credit loss. The portions of the declines in the fair values of fixed maturity investments that are determined to be due to expected credit losses are reported as losses in the Consolidated Statements of (Loss) Income in the periods when such determinations are made. Investment-grade fixed maturity investments comprised $904.0 million and below-investment-grade fixed maturity investments comprised $32.8 million of the unrealized losses on investments in fixed maturities at December 31, 2022. For below-investment-grade fixed maturity investments in an unrealized loss position, the unrealized loss amount, on average, was 11% of the amortized cost basis. At December 31, 2022 and December 31, 2021, the Company did not have the intent to sell these investments, and it was not more likely than not that the Company would be required to sell these investments before an anticipated recovery of value. The Company evaluated these investments for credit losses at December 31, 2022 and December 31, 2021. The Company considers many factors in evaluating whether the unrealized losses were credit related including, but not limited to, the extent to which the fair value has been less than amortized cost, conditions related to the security, industry, or geographic area, payment structure of the investment and the likelihood of the issuer’s ability to make contractual cashflows, defaults or other collectability concerns related to the issuer, changes in the ratings assigned by a rating agency, and other credit enhancements that affect the investment’s expected performance. The Company determined that the unrealized losses on these securities were due to non-credit related factors at the evaluation date. NOTE 9. INVESTMENTS (Continued) An aging of unrealized losses on the Company’s Investments in Fixed Maturities at December 31, 2021 is presented below. DOLLARS IN MILLIONS Less Than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized Fixed Maturities: U.S. Government and Government Agencies and Authorities $ 168.7 $ (1.8) $ 1.2 $ (0.1) $ 169.9 $ (1.9) States and Political Subdivisions 385.0 (6.9) 1.5 (0.1) 386.5 (7.0) Foreign Governments 2.2 (0.6) 2.6 (0.6) 4.8 (1.2) Corporate Securities: Bonds and Notes 596.8 (13.1) 49.3 (2.9) 646.1 (16.0) Redeemable Preferred Stocks 0.1 — — — 0.1 — Collateralized Loan Obligations 250.9 (2.6) 192.6 (2.2) 443.5 (4.8) Other Mortgage- and Asset-backed 100.1 (1.8) — — 100.1 (1.8) Total Fixed Maturities $ 1,503.8 $ (26.8) $ 247.2 $ (5.9) $ 1,751.0 $ (32.7) Investment-grade fixed maturity investments comprised $23.7 million and below-investment-grade fixed maturity investments comprised $9.0 million of the unrealized losses on investments in fixed maturities at December 31, 2021. For below-investment-grade fixed maturity investments in an unrealized loss position, the unrealized loss amount, on average, was approximately 4% of the amortized cost basis of the investment. Fixed Maturities - Expected Credit Losses The following table sets forth the change in allowance for credit losses on fixed maturities available-for-sale by major security type for year ended December 31, 2022. States and Political Subdivisions Corporate Bonds and Notes Total (Dollars in Millions) Beginning of the Year $ — $ 7.5 $ 7.5 Additions for Securities for which No Previous Expected Credit Losses were 0.7 6.3 7.0 Net Increase in Allowance on Securities for which Expected Credit Losses were Previously Recognized — 5.8 5.8 Write-offs Charged Against Allowance — (10.7) (10.7) End of Year $ 0.7 $ 8.9 $ 9.6 The following table sets forth the change in allowance for credit losses on fixed maturities available-for-sale by major security type for year ended December 31, 2021. Foreign Governments Corporate Bonds and Notes Total (Dollars in Millions) Beginning of the Year $ 0.3 $ 3.0 $ 3.3 Additions for Securities for which No Previous Expected Credit Losses were — 5.6 5.6 Net Decrease in Allowance on Securities for which Expected Credit Losses were Previously Recognized (0.3) (0.8) (1.1) Write-offs Charged Against Allowance — (0.3) (0.3) End of Year $ — $ 7.5 $ 7.5 NOTE 9. INVESTMENTS (Continued) Equity Securities Equity Securities at Fair Value Equity securities with readily-determinable fair values, including equity securities which the Company previously classified as Fair Value Option Investments , are classified as Equity Securities at Fair Value in the Consolidated Balance Sheets with changes in fair value recorded as Income from Change in Fair Value of Equity and Convertible Securities in the Consolidated Statements of (Loss) Income. Net unrealized gains arising during the year ended December 31, 2022 and recognized in earnings, related to such investments still held as of December 31, 2022 were $6.2 million. Equity Method Limited Liability Investments Equity Method Limited Liability Investments include investments in limited liability investment companies and limited partnerships in which the Company’s interests are not deemed minor and are accounted for under the equity method of accounting. The Company’s investments in Equity Method Limited Liability Investments are generally of a passive nature in that the Company does not take an active role in the management of the investment entity. In 2022 and 2021, aggregate investment income from Equity Method Limited Liability Investments exceeded 10% of the Company’s pretax consolidated net income. Accordingly, the Company is disclosing aggregated summarized financial data for its Equity Method Limited Liability Investments for all periods presented in the Consolidated Financial Statements. Such aggregated summarized financial data does not represent the Company’s proportionate share of the Equity Method Limited Liability Investment assets or earnings. Aggregate total assets of the Equity Method Limited Liability Investments in which the Company invested totaled $5,585.9 million, $5,042.5 million and $3,554.5 million, as of December 31, 2022, 2021, and 2020, respectively. Aggregate total liabilities of the Equity Method Limited Liability Investments in which the Company invested totaled $2,367.0 million, $2,074.8 million and $1,602.5 million, as of December 31, 2022, 2021, and 2020, respectively. Aggregate net income of the Equity Method Limited Liability Investments in which the Company invested totaled $381.8 million, $585.1 million and $74.9 million for the years ended December 31, 2022, 2021, and 2020, respectively. The aggregate summarized financial data is based on the most recent and sufficiently-timely financial information available to the Company as of the respective reporting dates and periods. The Company’s maximum exposure to loss at December 31, 2022 is limited to the total carrying value of $217.0 million. In addition, the Company had outstanding commitments totaling approximately $95.9 million to fund Equity Method Limited Liability Investments at December 31, 2022. At December 31, 2022, 2.1% of Equity Method Limited Liability Investments were reported without a reporting lag, 6.2% of the total carrying value were reported with a one month lag, and the remainder were reported with more than a one month lag. There were no unsettled purchases of Equity Method Limited Liability Investments as of December 31, 2022 and 2021. There were $35.2 million and $1.2 million unsettled sales of Equity Method Limited Liability Investments at December 31, 2022 and December 31, 2021, respectively. Alternative Energy Partnership Investments Alternative Energy Partnership Investments include partnerships formed to invest in newly installed residential solar leases and power purchase agreements. As a result of this investment, the Company has the right to certain investment tax credits and tax depreciation benefits, and to a lesser extent, cash flows generated from the installed solar systems leased to individual consumers for a fixed period of time. The HLBV equity method of accounting is used for the Company’s investments in Alternative Energy Partnership Investments. The Company’s maximum exposure to loss at December 31, 2022 is limited to the total carrying value of $16.3 million. The Company has no outstanding commitments to fund Alternative Energy Partnership Investments as of December 31, 2022. Alternative Energy Partnership Investments are reported on a three month lag. Company-Owned Life Insurance The carrying values of the Company’s COLI investment at December 31, 2022 and December 31, 2021 were $586.5 million and $448.1 million, respectively. NOTE 9. INVESTMENTS (Continued) Loans to Policyholders Loans to Policyholders represents funds loaned to policyholders up to the cash surrender value of the associated insurance policies and are carried at the unpaid principal balances due to the Company from the policyholders. Interest income on policy loans is recognized in Net Investment Income at the contract interest rate when earned. Policy loans are fully collateralized by the cash surrender value of the associated insurance policies. The carrying values of the Company’s Loans to Policyholders at Unpaid Principal investment at December 31, 2022 and December 31, 2021 were $283.4 million and $286.2 million, respectively. Other Investments The carrying values of the Company’s Other Investments at December 31, 2022 and 2021 were: DOLLARS IN MILLIONS 2022 2021 Equity Securities at Modified Cost $ 38.4 $ 32.3 Convertible Securities at Fair Value 43.3 46.4 Real Estate at Depreciated Cost 93.6 94.0 Mortgage Loans 91.1 96.8 Other 3.5 0.5 Total $ 269.9 $ 270.0 Investments in Equity Securities at Modified Cost were $38.4 million and $32.3 million at December 31, 2022 and December 31, 2021, respectively. The Company performs a qualitative impairment analysis on a quarterly basis consisting of various factors such as earnings performance, current market conditions, changes in credit ratings, changes in the regulatory environment and other factors. If the qualitative analysis identifies the presence of impairment indicators, the Company estimates the fair value of the investment. If the estimated fair value is below the carrying value, the Company records an impairment in the Consolidated Statements of (Loss) Income to reduce the carrying value to the estimated fair value. When the Company identifies observable transactions of the same or similar securities to those held by the Company, the Company increases or decreases the carrying value to the observable transaction price. The Company did not recognize any changes in carrying value due to observable transactions for the year ended December 31, 2022. The Company did not recognize any impairment on Equity Securities at Modified Cost for the year ended December 31, 2022 as a result of the Company’s impairment analysis. The Company recognized no cumulative increases or decreases in the carrying value due to observable transactions and $9.6 million of cumulative impairments on Equity Securities at Modified Cost held as of December 31, 2022. Net Investment Income for the years ended December 31, 2022, 2021 and 2020 was: DOLLARS IN MILLIONS 2022 2021 2020 Investment Income: Interest on Fixed Income Securities $ 300.1 $ 277.7 $ 289.8 Dividends on Equity Securities Excluding Alternative Investments 6.3 15.9 15.4 Alternative Investments: Equity Method Limited Liability Investments 31.3 56.7 4.9 Limited Liability Investments Included in Equity Securities 42.1 46.9 22.1 Total Alternative Investments 73.4 103.6 27.0 Short-term Investments 3.7 1.0 5.5 Loans to Policyholders 21.5 21.7 22.1 Real Estate 10.1 9.3 9.6 Company-Owned Life Insurance 37.9 25.7 12.9 Other 7.7 6.7 0.3 Total Investment Income 460.7 461.6 382.6 Investment Expenses: Real Estate 7.9 9.7 8.8 Other Investment Expenses 30.2 24.6 25.6 Total Investment Expenses 38.1 34.3 34.4 Net Investment Income $ 422.6 $ 427.3 $ 348.2 Other Receivables includes accrued investment income of $94.3 million and $79.6 million at December 31, 2022 and 2021, respectively. NOTE 10. INCOME FROM INVESTMENTS (Continued) The components of Net Realized Gains on Sales of Investments for the years ended December 31, 2022, 2021 and 2020 were: DOLLARS IN MILLIONS 2022 2021 2020 Fixed Maturities: Gains on Sales $ 31.6 $ 63.4 $ 40.6 Losses on Sales (31.9) (2.1) (7.9) Gains on Hedging Activity 1.7 — — Equity Securities: Gains on Sales 9.7 4.1 5.9 Losses on Sales (6.8) (0.7) (1.9) Equity Method Limited Liability Investments: Gains on Sales — 0.4 — Losses on Sales — — (0.4) Real Estate: Gains on Sales — 0.1 1.8 Losses on Sales — (0.4) — Net Realized Investment Gains $ 4.3 $ 64.8 $ 38.1 Gross Gains on Sales $ 41.3 $ 68.0 $ 48.3 Gross Losses on Sales (38.7) (3.2) (10.2) Gains on Hedging Activity 1.7 — — Net Realized Investment Gains $ 4.3 $ 64.8 $ 38.1 The components of Impairment Losses reported in the Consolidated Statements of (Loss) Income for the years ended December 31, 2022, 2021 and 2020 were: DOLLARS IN MILLIONS 2022 2021 2020 Fixed Maturities $ (25.8) $ (6.4) $ (16.7) Equity Securities — (4.2) (2.8) Real Estate — (0.4) — Net Impairment Losses Recognized in Earnings $ (25.8) $ (11.0) $ (19.5)

Income from Investments

Income from Investments	12 Months Ended
	Dec. 31, 2022
Investment Income, Net [Abstract]
Income from Investments	INVESTMENTS Fixed Maturities The amortized cost and estimated fair values of the Company’s Investments in Fixed Maturities at December 31, 2022 were: DOLLARS IN MILLIONS Amortized Gross Unrealized Allowance for Expected Credit Losses Fair Value Gains Losses U.S. Government and Government Agencies and Authorities $ 612.5 $ 1.3 $ (85.8) $ — $ 528.0 States and Political Subdivisions 1,797.6 10.3 (238.3) (0.7) 1,568.9 Foreign Governments 5.0 — (0.9) — 4.1 Corporate Securities: Bonds and Notes 4,030.3 17.7 (499.7) (8.9) 3,539.4 Redeemable Preferred Stocks 9.0 — (1.0) — 8.0 Collateralized Loan Obligations 1,014.7 — (60.8) — 953.9 Other Mortgage- and Asset-backed 342.7 0.1 (50.3) — 292.5 Investments in Fixed Maturities $ 7,811.8 $ 29.4 $ (936.8) $ (9.6) $ 6,894.8 NOTE 9. INVESTMENTS (Continued) The amortized cost and estimated fair values of the Company’s Investments in Fixed Maturities at December 31, 2021 were: Amortized Gross Unrealized Allowance for Expected Credit Losses Fair Value DOLLARS IN MILLIONS Gains Losses U.S. Government and Government Agencies and Authorities $ 610.1 $ 29.2 $ (1.9) $ — $ 637.4 States and Political Subdivisions 1,752.5 144.6 (7.0) — 1,890.1 Foreign Governments 6.7 — (1.2) — 5.5 Corporate Securities: Bonds and Notes 3,929.0 481.4 (16.0) (7.5) 4,386.9 Redeemable Preferred Stocks 7.0 0.4 — 7.4 Collateralized Loan Obligations 756.0 0.9 (4.8) — 752.1 Other Mortgage- and Asset-backed 296.9 12.4 (1.8) — 307.5 Investments in Fixed Maturities $ 7,358.2 $ 668.9 $ (32.7) $ (7.5) $ 7,986.9 Other Receivables included $5.8 million and $0.6 million of unsettled sales of Investments in Fixed Maturities at December 31, 2022 and December 31, 2021, respectively. Accrued Expenses and Other Liabilities included unsettled purchases of Investments in Fixed Maturities of $25.9 million and $12.7 million at December 31, 2022 and 2021, respectively. The amortized cost and estimated fair values of the Company’s Investments in Fixed Maturities at December 31, 2022 by contractual maturity were: DOLLARS IN MILLIONS Amortized Cost Fair Value Due in One Year or Less $ 151.1 $ 146.9 Due after One Year to Five Years 991.8 952.3 Due after Five Years to Ten Years 1,231.1 1,071.9 Due after Ten Years 3,598.8 3,070.3 Mortgage- and Asset-backed Securities Not Due at a Single Maturity Date 1,839.0 1,653.4 Investments in Fixed Maturities $ 7,811.8 $ 6,894.8 The expected maturities of the Company’s Investments in Fixed Maturities may differ from the contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties. Investments in Mortgage- and Asset-backed Securities Not Due at a Single Maturity Date at December 31, 2022 consisted of securities issued by the Government National Mortgage Association with a fair value of $245.6 million, securities issued by the Federal National Mortgage Association with a fair value of $95.5 million, securities issued by the Federal Home Loan Mortgage Corporation with a fair value of $65.9 million and securities of other non-governmental issuers with a fair value of $1,246.5 million. NOTE 9. INVESTMENTS (Continued) An aging of unrealized losses on the Company’s Investments in Fixed Maturities at December 31, 2022 is presented below. DOLLARS IN MILLIONS Less Than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized Fixed Maturities: U.S. Government and Government Agencies and Authorities $ 337.3 $ (49.3) $ 126.5 $ (36.5) $ 463.8 $ (85.8) States and Political Subdivisions 854.7 (140.6) 276.8 (97.7) 1,131.5 (238.3) Foreign Governments 0.1 — 2.6 (0.9) 2.7 (0.9) Corporate Securities: Bonds and Notes 2,730.6 (373.9) 424.4 (125.8) 3,155.0 (499.7) Redeemable Preferred Stocks 7.7 (1.0) — — 7.7 (1.0) Collateralized Loan Obligations 568.2 (34.2) 373.9 (26.6) 942.1 (60.8) Other Mortgage- and Asset-backed 205.4 (28.9) 79.5 (21.4) 284.9 (50.3) Total Fixed Maturities $ 4,704.0 $ (627.9) $ 1,283.7 $ (308.9) $ 5,987.7 $ (936.8) The Company regularly reviews its fixed maturity investment portfolio for factors that may indicate that a decline in fair value of an investment has resulted from an expected credit loss. The portions of the declines in the fair values of fixed maturity investments that are determined to be due to expected credit losses are reported as losses in the Consolidated Statements of (Loss) Income in the periods when such determinations are made. Investment-grade fixed maturity investments comprised $904.0 million and below-investment-grade fixed maturity investments comprised $32.8 million of the unrealized losses on investments in fixed maturities at December 31, 2022. For below-investment-grade fixed maturity investments in an unrealized loss position, the unrealized loss amount, on average, was 11% of the amortized cost basis. At December 31, 2022 and December 31, 2021, the Company did not have the intent to sell these investments, and it was not more likely than not that the Company would be required to sell these investments before an anticipated recovery of value. The Company evaluated these investments for credit losses at December 31, 2022 and December 31, 2021. The Company considers many factors in evaluating whether the unrealized losses were credit related including, but not limited to, the extent to which the fair value has been less than amortized cost, conditions related to the security, industry, or geographic area, payment structure of the investment and the likelihood of the issuer’s ability to make contractual cashflows, defaults or other collectability concerns related to the issuer, changes in the ratings assigned by a rating agency, and other credit enhancements that affect the investment’s expected performance. The Company determined that the unrealized losses on these securities were due to non-credit related factors at the evaluation date. NOTE 9. INVESTMENTS (Continued) An aging of unrealized losses on the Company’s Investments in Fixed Maturities at December 31, 2021 is presented below. DOLLARS IN MILLIONS Less Than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized Fixed Maturities: U.S. Government and Government Agencies and Authorities $ 168.7 $ (1.8) $ 1.2 $ (0.1) $ 169.9 $ (1.9) States and Political Subdivisions 385.0 (6.9) 1.5 (0.1) 386.5 (7.0) Foreign Governments 2.2 (0.6) 2.6 (0.6) 4.8 (1.2) Corporate Securities: Bonds and Notes 596.8 (13.1) 49.3 (2.9) 646.1 (16.0) Redeemable Preferred Stocks 0.1 — — — 0.1 — Collateralized Loan Obligations 250.9 (2.6) 192.6 (2.2) 443.5 (4.8) Other Mortgage- and Asset-backed 100.1 (1.8) — — 100.1 (1.8) Total Fixed Maturities $ 1,503.8 $ (26.8) $ 247.2 $ (5.9) $ 1,751.0 $ (32.7) Investment-grade fixed maturity investments comprised $23.7 million and below-investment-grade fixed maturity investments comprised $9.0 million of the unrealized losses on investments in fixed maturities at December 31, 2021. For below-investment-grade fixed maturity investments in an unrealized loss position, the unrealized loss amount, on average, was approximately 4% of the amortized cost basis of the investment. Fixed Maturities - Expected Credit Losses The following table sets forth the change in allowance for credit losses on fixed maturities available-for-sale by major security type for year ended December 31, 2022. States and Political Subdivisions Corporate Bonds and Notes Total (Dollars in Millions) Beginning of the Year $ — $ 7.5 $ 7.5 Additions for Securities for which No Previous Expected Credit Losses were 0.7 6.3 7.0 Net Increase in Allowance on Securities for which Expected Credit Losses were Previously Recognized — 5.8 5.8 Write-offs Charged Against Allowance — (10.7) (10.7) End of Year $ 0.7 $ 8.9 $ 9.6 The following table sets forth the change in allowance for credit losses on fixed maturities available-for-sale by major security type for year ended December 31, 2021. Foreign Governments Corporate Bonds and Notes Total (Dollars in Millions) Beginning of the Year $ 0.3 $ 3.0 $ 3.3 Additions for Securities for which No Previous Expected Credit Losses were — 5.6 5.6 Net Decrease in Allowance on Securities for which Expected Credit Losses were Previously Recognized (0.3) (0.8) (1.1) Write-offs Charged Against Allowance — (0.3) (0.3) End of Year $ — $ 7.5 $ 7.5 NOTE 9. INVESTMENTS (Continued) Equity Securities Equity Securities at Fair Value Equity securities with readily-determinable fair values, including equity securities which the Company previously classified as Fair Value Option Investments , are classified as Equity Securities at Fair Value in the Consolidated Balance Sheets with changes in fair value recorded as Income from Change in Fair Value of Equity and Convertible Securities in the Consolidated Statements of (Loss) Income. Net unrealized gains arising during the year ended December 31, 2022 and recognized in earnings, related to such investments still held as of December 31, 2022 were $6.2 million. Equity Method Limited Liability Investments Equity Method Limited Liability Investments include investments in limited liability investment companies and limited partnerships in which the Company’s interests are not deemed minor and are accounted for under the equity method of accounting. The Company’s investments in Equity Method Limited Liability Investments are generally of a passive nature in that the Company does not take an active role in the management of the investment entity. In 2022 and 2021, aggregate investment income from Equity Method Limited Liability Investments exceeded 10% of the Company’s pretax consolidated net income. Accordingly, the Company is disclosing aggregated summarized financial data for its Equity Method Limited Liability Investments for all periods presented in the Consolidated Financial Statements. Such aggregated summarized financial data does not represent the Company’s proportionate share of the Equity Method Limited Liability Investment assets or earnings. Aggregate total assets of the Equity Method Limited Liability Investments in which the Company invested totaled $5,585.9 million, $5,042.5 million and $3,554.5 million, as of December 31, 2022, 2021, and 2020, respectively. Aggregate total liabilities of the Equity Method Limited Liability Investments in which the Company invested totaled $2,367.0 million, $2,074.8 million and $1,602.5 million, as of December 31, 2022, 2021, and 2020, respectively. Aggregate net income of the Equity Method Limited Liability Investments in which the Company invested totaled $381.8 million, $585.1 million and $74.9 million for the years ended December 31, 2022, 2021, and 2020, respectively. The aggregate summarized financial data is based on the most recent and sufficiently-timely financial information available to the Company as of the respective reporting dates and periods. The Company’s maximum exposure to loss at December 31, 2022 is limited to the total carrying value of $217.0 million. In addition, the Company had outstanding commitments totaling approximately $95.9 million to fund Equity Method Limited Liability Investments at December 31, 2022. At December 31, 2022, 2.1% of Equity Method Limited Liability Investments were reported without a reporting lag, 6.2% of the total carrying value were reported with a one month lag, and the remainder were reported with more than a one month lag. There were no unsettled purchases of Equity Method Limited Liability Investments as of December 31, 2022 and 2021. There were $35.2 million and $1.2 million unsettled sales of Equity Method Limited Liability Investments at December 31, 2022 and December 31, 2021, respectively. Alternative Energy Partnership Investments Alternative Energy Partnership Investments include partnerships formed to invest in newly installed residential solar leases and power purchase agreements. As a result of this investment, the Company has the right to certain investment tax credits and tax depreciation benefits, and to a lesser extent, cash flows generated from the installed solar systems leased to individual consumers for a fixed period of time. The HLBV equity method of accounting is used for the Company’s investments in Alternative Energy Partnership Investments. The Company’s maximum exposure to loss at December 31, 2022 is limited to the total carrying value of $16.3 million. The Company has no outstanding commitments to fund Alternative Energy Partnership Investments as of December 31, 2022. Alternative Energy Partnership Investments are reported on a three month lag. Company-Owned Life Insurance The carrying values of the Company’s COLI investment at December 31, 2022 and December 31, 2021 were $586.5 million and $448.1 million, respectively. NOTE 9. INVESTMENTS (Continued) Loans to Policyholders Loans to Policyholders represents funds loaned to policyholders up to the cash surrender value of the associated insurance policies and are carried at the unpaid principal balances due to the Company from the policyholders. Interest income on policy loans is recognized in Net Investment Income at the contract interest rate when earned. Policy loans are fully collateralized by the cash surrender value of the associated insurance policies. The carrying values of the Company’s Loans to Policyholders at Unpaid Principal investment at December 31, 2022 and December 31, 2021 were $283.4 million and $286.2 million, respectively. Other Investments The carrying values of the Company’s Other Investments at December 31, 2022 and 2021 were: DOLLARS IN MILLIONS 2022 2021 Equity Securities at Modified Cost $ 38.4 $ 32.3 Convertible Securities at Fair Value 43.3 46.4 Real Estate at Depreciated Cost 93.6 94.0 Mortgage Loans 91.1 96.8 Other 3.5 0.5 Total $ 269.9 $ 270.0 Investments in Equity Securities at Modified Cost were $38.4 million and $32.3 million at December 31, 2022 and December 31, 2021, respectively. The Company performs a qualitative impairment analysis on a quarterly basis consisting of various factors such as earnings performance, current market conditions, changes in credit ratings, changes in the regulatory environment and other factors. If the qualitative analysis identifies the presence of impairment indicators, the Company estimates the fair value of the investment. If the estimated fair value is below the carrying value, the Company records an impairment in the Consolidated Statements of (Loss) Income to reduce the carrying value to the estimated fair value. When the Company identifies observable transactions of the same or similar securities to those held by the Company, the Company increases or decreases the carrying value to the observable transaction price. The Company did not recognize any changes in carrying value due to observable transactions for the year ended December 31, 2022. The Company did not recognize any impairment on Equity Securities at Modified Cost for the year ended December 31, 2022 as a result of the Company’s impairment analysis. The Company recognized no cumulative increases or decreases in the carrying value due to observable transactions and $9.6 million of cumulative impairments on Equity Securities at Modified Cost held as of December 31, 2022. Net Investment Income for the years ended December 31, 2022, 2021 and 2020 was: DOLLARS IN MILLIONS 2022 2021 2020 Investment Income: Interest on Fixed Income Securities $ 300.1 $ 277.7 $ 289.8 Dividends on Equity Securities Excluding Alternative Investments 6.3 15.9 15.4 Alternative Investments: Equity Method Limited Liability Investments 31.3 56.7 4.9 Limited Liability Investments Included in Equity Securities 42.1 46.9 22.1 Total Alternative Investments 73.4 103.6 27.0 Short-term Investments 3.7 1.0 5.5 Loans to Policyholders 21.5 21.7 22.1 Real Estate 10.1 9.3 9.6 Company-Owned Life Insurance 37.9 25.7 12.9 Other 7.7 6.7 0.3 Total Investment Income 460.7 461.6 382.6 Investment Expenses: Real Estate 7.9 9.7 8.8 Other Investment Expenses 30.2 24.6 25.6 Total Investment Expenses 38.1 34.3 34.4 Net Investment Income $ 422.6 $ 427.3 $ 348.2 Other Receivables includes accrued investment income of $94.3 million and $79.6 million at December 31, 2022 and 2021, respectively. NOTE 10. INCOME FROM INVESTMENTS (Continued) The components of Net Realized Gains on Sales of Investments for the years ended December 31, 2022, 2021 and 2020 were: DOLLARS IN MILLIONS 2022 2021 2020 Fixed Maturities: Gains on Sales $ 31.6 $ 63.4 $ 40.6 Losses on Sales (31.9) (2.1) (7.9) Gains on Hedging Activity 1.7 — — Equity Securities: Gains on Sales 9.7 4.1 5.9 Losses on Sales (6.8) (0.7) (1.9) Equity Method Limited Liability Investments: Gains on Sales — 0.4 — Losses on Sales — — (0.4) Real Estate: Gains on Sales — 0.1 1.8 Losses on Sales — (0.4) — Net Realized Investment Gains $ 4.3 $ 64.8 $ 38.1 Gross Gains on Sales $ 41.3 $ 68.0 $ 48.3 Gross Losses on Sales (38.7) (3.2) (10.2) Gains on Hedging Activity 1.7 — — Net Realized Investment Gains $ 4.3 $ 64.8 $ 38.1 The components of Impairment Losses reported in the Consolidated Statements of (Loss) Income for the years ended December 31, 2022, 2021 and 2020 were: DOLLARS IN MILLIONS 2022 2021 2020 Fixed Maturities $ (25.8) $ (6.4) $ (16.7) Equity Securities — (4.2) (2.8) Real Estate — (0.4) — Net Impairment Losses Recognized in Earnings $ (25.8) $ (11.0) $ (19.5)

Derivatives

Derivatives	12 Months Ended
	Dec. 31, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives	DERIVATIVES The Company’s earnings, cash flows, and financial position are subject to fluctuations due to changes in prevailing interest rates. From time to time, the Company uses derivative financial instruments to reduce fluctuations of earnings related to interest rate exposure. The Company entered into derivative agreements with maturity dates throughout 2022 and future periods. Derivative instruments are carried at fair value on the Consolidated Balance Sheets. Derivative instruments in a gain position are presented within Other Investments and those in a loss position are included in Accrued Expenses and Other Liabilities. Changes in the fair values of derivatives are recorded on the Consolidated Statements of (Loss) Income within Net Realized Investment Gains or Accumulated Other Comprehensive (Loss) Income along with the corresponding change in the designated hedge assets. Interest Rate Risk The Company’s debt securities valuations utilize the Treasury designated benchmark rate, exposing the Company to variability due to changes in interest rates. NOTE 11. DERIVATIVES (Continued) Interest Swap Lock The Company has entered into interest swap lock agreements classified as cash flow hedges to manage exposure to changes in future purchase prices of fixed maturity securities attributable to changes in the benchmark (Treasury) interest rate. The Company assesses the effectiveness of cash flow hedges using the hypothetical derivative method. Based on the results of the assessment, the hedge is determined to be highly effective. Treasury Lock During 2022 the Company entered into Treasury Lock agreements classified as fair value hedges to manage exposure to changes in the fair value of designated assets. These agreements matured in the third quarter of 2022. The results are shown in the Fair Value Hedges section below. The Company assesses the effectiveness of fair value hedges using the dollar-offset method. Based on the results of the assessment, the hedge is determined to be highly effective. Reverse Treasury Lock During 2022 the Company entered into a Reverse Treasury Lock agreement to manage reinvestment risk on future purchases of fixed maturity securities. The Reverse Treasury Lock agreement did not qualify for hedge accounting. The results are shown in the Reverse Treasury Lock section below. Primary Risks Managed by Derivatives The following table presents the derivative instruments, primary underlying risk exposure, gross notional amount, and estimated fair value of the Company’s derivatives: Dec 31, 2022 Dec 31, 2021 (Dollars in Millions) Estimated Fair Value Estimated Fair Value Derivative Instrument Primary Underlying Risk Exposure Gross Notional Amount Assets Liabilities Gross Notional Amount Assets Liabilities Derivatives Designated as Hedging Instruments: Interest Swap Lock Interest Rate Risk $ 5.0 $ — $ 0.4 $ — $ — $ — Derivatives Not Designated or Not Qualifying as Hedging Instruments: Reverse Treasury Lock Interest Rate Risk $ 100.0 $ 1.7 $ — $ — $ — $ — Effects of Derivatives on the Statements of Income and Comprehensive (Loss) Income Cash Flow Hedges The below table reflects the amounts of Losses deferred into AOCI and subsequently reclassified into Net (Loss) Income through Net Realized Investment Gains for derivatives qualifying as cash flow hedges for the years ended December 31, 2022 and 2021: Year Ended (Dollars in Millions) Dec 31, 2022 Dec 31, 2021 Amount of Losses Deferred in AOCI $ (0.4) $ — Amount of Losses Reclassified into Income — — Net Comprehensive Loss from Cash Flow Hedges $ (0.4) $ — NOTE 11. DERIVATIVES (Continued) Fair Value Hedges The below table reflects the effects of changes in the designated hedged asset’s impacts on AOCI and Net Realized Investment Gains as well as the derivative instruments designated as fair value hedges impact on Net Realized Investment Gains for the years ended December 31, 2022 and 2021: Year Ended (Dollars in Millions) Dec 31, 2022 Dec 31, 2021 Increase in Derivative Instruments Designated as Fair Value Hedges $ 1.1 $ — Decrease in Fair Value of Hedged Assets Reclassified from AOCI (1.1) — Net Gain from Hedging Activity $ — $ — Derivatives Not Designated or Not Qualifying as Hedging Instruments Reverse Treasury Lock A portion of the Company’s derivatives were not designated or did not qualify as part of a hedging relationship at both December 31, 2022 and 2021. The changes in value of the derivatives not qualifying for hedge accounting are recognized in Net Realized Investment Gains on the Consolidated Statements of (Loss) Income. The below table reflects the amounts recognized in Net Realized Investment Gains for the years ended December 31, 2022 and 2021: Year Ended (Dollars in Millions) Dec 31, 2022 Dec 31, 2021 Net Realized Investment Gains $ 1.7 $ —

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2022
Fair Value Disclosures [Abstract]
Fair Value Measurements	FAIR VALUE MEASUREMENTS Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The Company is responsible for the determination of fair value of financial assets and liabilities, including the supporting assumptions and methodologies, and uses independent third-party valuation service providers, broker quotes and internal pricing methodologies to determine fair values. The Company obtains or estimates only one single quote or price for each financial instrument. The Company uses a hierarchical framework for inputs to determine fair value which prioritizes the use of observable inputs and minimizes the use of unobservable inputs. Additionally, the Company categorizes fair value measurements based on the lowest level of input that is considered to be significant to the entire measurement. The Company classifies its investments in Fixed Maturities as available for sale and reports these investments at fair value. The Company reports equity investments with readily determinable fair values as Equity Securities at Fair Value. Certain investments that are measured at fair value using the net asset value practical expedient are not required to be classified using the fair value hierarchy, but are presented in the following two tables to permit reconciliation of the fair value hierarchy to the amounts presented in the Consolidated Balance Sheets. NOTE 12. FAIR VALUE MEASUREMENTS (Continued) The valuation of assets and liabilities measured at fair value in the Company’s Consolidated Balance Sheets at December 31, 2022 is summarized below. The Company has no material liabilities that are measured and reported at fair value. DOLLARS IN MILLIONS Fair Value Measurements Total Fair Value Quoted Prices Significant Significant Measured at Net Asset Value Assets: Fixed Maturities: U.S. Government and Government Agencies and Authorities $ 103.6 $ 424.4 $ — $ — $ 528.0 States and Political Subdivisions — 1,568.9 — — 1,568.9 Foreign Governments — 4.1 — — 4.1 Corporate Securities: Bonds and Notes — 3,323.4 216.0 — 3,539.4 Redeemable Preferred Stocks — 1.2 6.8 — 8.0 Collateralized Loan Obligations — 953.9 — — 953.9 Other Mortgage- and Asset-backed — 287.4 5.1 — 292.5 Total Investments in Fixed Maturities 103.6 6,563.3 227.9 — 6,894.8 Equity Securities at Fair Value: Preferred Stocks: Finance, Insurance and Real Estate — 29.0 — — 29.0 Other Industries — 9.2 1.6 — 10.8 Common Stocks: Finance, Insurance and Real Estate 0.9 — — — 0.9 Other Industries 0.3 0.4 0.5 — 1.2 Other Equity Interests: Exchange Traded Funds 12.2 — — — 12.2 Limited Liability Companies and Limited Partnerships — — — 189.1 189.1 Total Investments in Equity Securities at Fair Value 13.4 38.6 2.1 189.1 243.2 Convertible Securities at Fair Value — 43.3 — — 43.3 Other Liabilities: Derivative Instruments Not Designated as Hedges — 1.7 — — 1.7 Total Assets $ 117.0 $ 6,646.9 $ 230.0 $ 189.1 $ 7,183.0 Liabilities: Accrued Expenses and Other Liabilities: Derivative Instruments Designated as Cash Flow Hedges $ — (0.4) $ — $ — $ (0.4) Total Liabilities $ — $ (0.4) $ — $ — $ (0.4) NOTE 12. FAIR VALUE MEASUREMENTS (Continued) The valuation of assets measured at fair value in the Company’s Consolidated Balance Sheets at December 31, 2021 is summarized below. DOLLARS IN MILLIONS Fair Value Measurements Total Fair Value Quoted Prices Significant Significant Measured at Net Asset Value Assets: Fixed Maturities: U.S. Government and Government Agencies and Authorities $ 132.8 $ 504.6 $ — $ — $ 637.4 States and Political Subdivisions — 1,890.1 — — 1,890.1 Foreign Governments — 5.5 — — 5.5 Corporate Securities: Bonds and Notes — 4,150.1 236.8 — 4,386.9 Redeemable Preferred Stocks — 1.3 6.1 — 7.4 Collateralized Loan Obligations — 752.1 — — 752.1 Other Mortgage- and Asset-backed — 300.5 7.0 — 307.5 Total Investments in Fixed Maturities 132.8 7,604.2 249.9 — 7,986.9 Equity Securities at Fair Value: Preferred Stocks: Finance, Insurance and Real Estate — 34.2 — — 34.2 Other Industries — 16.1 1.5 — 17.6 Common Stocks: Finance, Insurance and Real Estate 18.9 — — — 18.9 Other Industries 2.9 — — — 2.9 Other Equity Interests: Exchange Traded Funds 432.0 — — — 432.0 Limited Liability Companies and Limited Partnerships — — — 325.0 325.0 Total Investments in Equity Securities at Fair Value 453.8 50.3 1.5 325.0 830.6 Other Investments: Convertible Securities at Fair Value — 46.4 — — 46.4 Total Assets $ 586.6 $ 7,700.9 $ 251.4 $ 325.0 $ 8,863.9 Liabilities: Accrued Expenses and Other Liabilities: Derivative Instruments Designated as Cash Flow Hedges $ — $ — $ — $ — $ — Total Liabilities $ — $ — $ — $ — $ — NOTE 12. FAIR VALUE MEASUREMENTS (Continued) The Company’s investments in Fixed Maturities that are classified as Level 1 primarily consist of U.S. Treasury Bonds and Notes. The Company’s investments in Equity Securities at Fair Value that are classified as Level 1 consist of either investments in publicly-traded common stocks or exchange traded funds. The Company’s investments in Fixed Maturities that are classified as Level 2 primarily consist of investments in corporate bonds, obligations of states and political subdivisions, collateralized loan obligations, and mortgage-backed securities of U.S. government agencies. The Company’s investments in Equity Securities at Fair Value that are classified as Level 2 primarily consist of investments in preferred stocks. The Company’s Derivative Instruments Designated as Fair Value Hedges that are classified as Level 2 primarily consist of hedges against the Company’s available for sale debt securities portfolio. The Company uses a leading, nationally recognized provider of market data and analytics to price the vast majority of the Company’s Level 2 measurements. The provider utilizes evaluated pricing models that vary by asset class and incorporate available trade, bid and other market information. Because many fixed maturity securities do not trade on a daily basis, the provider’s evaluated pricing applications apply available information through processes such as benchmark curves, benchmarking of like securities, sector groupings and matrix pricing to prepare evaluations. In addition, the provider uses model processes to develop prepayment and interest rate scenarios. The pricing provider’s models and processes also take into account market convention. For each asset class, teams of its evaluators gather information from market sources and integrate relevant credit information, perceived market movements and sector news into the evaluated pricing applications and models. The Company generally validates the measurements obtained from its primary pricing provider by comparing them with measurements obtained from one additional pricing provider that provides either prices from recent market transactions, quotes in inactive markets or evaluations based on its own proprietary models. The Company investigates significant differences related to the values provided. On completion of its investigation, management exercises judgment to determine the price selected and whether adjustments, if any, to the price obtained from the Company’s primary pricing provider would warrant classification of the price as Level 3. In instances where a measurement cannot be obtained from either pricing provider, the Company generally will evaluate bid prices from one or more binding quotes obtained from market makers to value investments in inactive markets and classified by the Company as Level 2. The Company generally classifies securities when it receives non-binding quotes or indications as Level 3 securities unless the Company can validate the quote or indication against recent transactions in the market. The table below presents quantitative information about the significant unobservable inputs utilized by the Company in determining fair values for fixed maturity investments in corporate securities classified as Level 3 at December 31, 2022. DOLLARS IN MILLIONS Unobservable Input Total Fair Value Range of Unobservable Inputs Weighted-average Yield Investment-grade Market Yield $ 56.5 4.6 % - 14.5 % 9.2 % Non-investment-grade: Senior Debt Market Yield 72.9 4.6 - 36.7 10.9 Junior Debt Market Yield 42.1 8.8 - 22.5 15.1 Other Various 56.4 Total Level 3 Fixed Maturity Investments $ 227.9 The table below presents quantitative information about the significant unobservable inputs utilized by the Company in determining fair values for fixed maturity investments in corporate securities classified as Level 3 at December 31, 2021. DOLLARS IN MILLIONS Unobservable Input Total Fair Value Range of Unobservable Inputs Weighted-average Yield Investment-grade Market Yield $ 87.9 2.3 % - 10.3 % 5.4 % Non-investment-grade: Senior Debt Market Yield 76.1 5.1 - 20.2 8.5 Junior Debt Market Yield 53.9 6.0 - 27.5 15.0 Other Various 32.0 Total Level 3 Fixed Maturity Investments $ 249.9 NOTE 12. FAIR VALUE MEASUREMENTS (Continued) For an investment in a fixed maturity security, an increase in the yield used to determine the fair value of the security will decrease the fair value of the security. A decrease in the yield used to determine fair value will increase the fair value of the security, but for callable securities the fair value increase is generally limited to par, unless the security is currently callable at a premium. Information by security type pertaining to the changes in the fair value of the Company’s investments classified as Level 3 for the year ended December 31, 2022 is presented below. DOLLARS IN MILLIONS Fixed Maturities Equity Securities Corporate Redeemable Other Mortgage- Preferred Total Balance at Beginning of Year $ 236.8 $ 6.1 $ 7.0 $ 1.5 $ 251.4 Total Losses: Included in Consolidated Statements of (Loss) Income (12.7) — — — (12.7) Included in Other Comprehensive (Loss) Income (19.2) (1.3) (1.9) (0.2) (22.6) Purchases 107.8 2.0 — 2.7 112.5 Settlements — — — — — Sales (114.1) — — (1.9) (116.0) Transfers into Level 3 23.1 — — — 23.1 Transfers out of Level 3 (5.7) — — — (5.7) Balance at End of Year $ 216.0 $ 6.8 $ 5.1 $ 2.1 $ 230.0 The transfers into and out of Level 3 were due to changes in the availability of market observable inputs. Information by security type pertaining to the changes in the fair value of the Company’s investments classified as Level 3 for the year ended December 31, 2021 is presented below. DOLLARS IN MILLIONS Fixed Maturities Equity Securities Total Corporate Redeemable Collateralized Loan Obligations Other Mortgage- Preferred Balance at Beginning of Year $ 433.0 $ 6.2 $ — $ 10.0 $ — $ 449.2 Total Gains (Losses): Included in Consolidated Statements of (Loss) Income 2.8 — — — — 2.8 Included in Other Comprehensive (Loss) Income 1.2 (0.1) 0.1 (0.5) 0.7 1.4 Purchases 104.6 — 17.7 16.2 1.7 140.2 Settlements — — — (0.1) — (0.1) Sales (128.1) — (10.0) (0.2) — (138.3) Transfers into Level 3 8.1 — 10.0 — 1.7 19.8 Transfers out of Level 3 (184.8) — (17.8) (18.4) (2.6) (223.6) Balance at End of Year $ 236.8 $ 6.1 $ — $ 7.0 $ 1.5 $ 251.4 The transfers into and out of Level 3 were due to changes in the availability of market observable inputs. NOTE 12. FAIR VALUE MEASUREMENTS (Continued) The table below shows investments reported at fair value using NAV and their unfunded commitments by asset class as of December 31, 2022 and 2021, respectively. Dollars in Millions December 31, 2022 December 31, 2021 Asset Class Fair Value Using NAV Unfunded Fair Value Using NAV Unfunded Reported as Equity Method Limited Liability Investments: Mezzanine Debt $ 114.3 $ 51.6 $ 120.0 $ 43.3 Senior Debt 21.6 42.0 27.5 46.7 Distressed Debt 9.4 — 21.7 100.1 Secondary Transactions 9.3 1.7 11.7 8.3 Hedge Fund 0.5 — 8.7 — Leveraged Buyout 8.9 0.6 8.7 0.1 Growth Equity 1.2 — 0.7 — Real Estate 43.3 — 29.9 — Other 8.5 — 13.0 — Total Equity Method Limited Liability Investments 217.0 95.9 241.9 198.5 Reported as Other Equity Interests at Fair Value: Mezzanine Debt 106.0 56.0 129.3 53.7 Senior Debt 21.9 6.0 29.9 15.1 Distressed Debt 12.5 13.0 44.9 20.0 Secondary Transactions 3.5 4.2 4.0 6.8 Hedge Funds 18.1 — 82.7 — Leveraged Buyout 21.6 9.0 32.2 6.0 Growth Equity 5.4 7.9 2.0 0.7 Other 0.1 0.2 — — Total Reported as Other Equity Interests at Fair Value 189.1 96.3 325.0 102.3 Reported as Equity Securities at Modified Cost: Other 8.3 — 7.7 — Total Reported as Equity Securities at Modified Cost 8.3 — 7.7 — Total Investments in Limited Liability Companies and Limited Partnerships $ 414.4 $ 192.2 $ 574.6 $ 300.8 At December 31, 2022, the Company had unfunded commitments to invest an additional $192.2 million in certain limited liability investment companies and limited partnerships that will be included in Other Equity Interests and Equity Method Limited Liability Investments if funded. The fund investments included above (excluding Hedge Funds) are not redeemable, because distributions from the funds will be received when underlying investments of the funds are liquidated. The funds are generally expected to have approximately 10 year lives at their inception, but these lives may be extended at the fund manager’s discretion, typically in one The hedge fund investments included above, which are carried at fair value, are generally redeemable subject to the redemption notices period. The majority of the hedge fund investments are redeemable monthly or quarterly. NOTE 12. FAIR VALUE MEASUREMENTS (Continued) The following table includes information related to the Company’s investments in certain private equity funds or hedge funds that calculate a net asset value per share: Asset Class Investment Category Includes Mezzanine Debt Funds with investments in junior or subordinated debt and potentially minority equity securities issued by private companies. Senior Debt Funds with investments in senior or first lien debt and potentially minority equity securities typically issued by private companies. Distressed Debt Funds with debt or minority equity investments that are made opportunistically in companies that are in or near default or under financial strain with potential to have an active role in restructuring company. Secondary Transactions Funds that focus on purchasing third party fund interests from investors seeking liquidity within their own portfolio. Hedge Fund Funds that focus primarily on investing in public securities with strategy of generating uncorrelated returns to the public markets. Leveraged Buyout Funds with control equity investments in more mature, positive cash flowing, private companies that are typically purchased with the use of financial leverage. Growth Equity Funds that invest in early or venture stage companies with high growth potential with view towards generating realizations through sale or initial public offering (“IPO”) of company. Real Estate Funds with investments in multi-family housing properties. Other Consists of direct investments of preferred equity or minority common equity investments into private companies structured as limited partnerships or limited liability companies. Presented below are the carrying values and fair value estimates of financial instruments not carried at fair value. December 31, 2022 December 31, 2021 (Dollars in Millions) Carrying Value Fair Value Carrying Value Fair Value Financial Assets: Loans to Policyholders $ 283.4 $ 283.4 $ 286.2 $ 286.2 Short-term Investments 278.4 278.4 284.1 284.1 Mortgage Loans 91.1 91.1 96.8 96.8 Company-Owned Life Insurance 586.5 586.5 448.1 448.1 Equity Securities at Modified Cost 38.4 38.4 32.3 32.3 Financial Liabilities: Long-term Debt $ 1,386.9 $ 1,195.1 $ 1,121.9 $ 1,152.1 Policyholder Obligations 601.0 601.0 401.9 401.9 Loans to policyholders are carried at unpaid principal balance which approximates fair value and are categorized as Level 3 within the fair value hierarchy. The nature of policy loans is to have a negligible default risk as the loans are fully collateralized by the value of the policy. Policy loans do not have a stated maturity and the balances and accrued interest are repaid either by the policyholder or with proceeds from the policy. Due to the collateralized nature of policy loans and unpredictable timing of payments, the Company believes the carrying value of policy loans approximates fair value. The fair value measurement of Short-term Investments is estimated using inputs that are considered either Level 1 or Level 2 measurements. The Mortgage Loans fair value measurement is considered equal to amortized cost given the short-term nature of the investments. The fair value measurement of Equity Securities at Modified Cost is estimated using inputs that are considered Level 3 measurements. The cash surrender value of Company-Owned Life Insurance approximates fair value. The fair value of Long-term Debt is estimated using quoted prices for similar liabilities in markets that are not active. The inputs used in the valuation are considered Level 2 measurements. Policyholder Obligations presented in the preceding table consist of advances from the FHLB of Chicago, and the inputs used in the valuation are considered Level 2 measurements.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	GOODWILL AND INTANGIBLE ASSETS Goodwill balances by business segment at December 31, 2022 and 2021 were: DOLLARS IN MILLIONS 2022 2021 Specialty Property & Casualty Insurance $ 1,043.0 $ 1,043.0 Preferred Property & Casualty Insurance 49.6 49.6 Life & Health Insurance 207.7 219.4 Total $ 1,300.3 $ 1,312.0 The Company tests goodwill for recoverability at the reporting unit level on an annual basis, or whenever events or circumstances indicate the fair value of a reporting unit may have declined below its carrying value. The Company performed a quantitative goodwill impairment assessment for all reporting units with goodwill as of October 1, 2022, principally using projections of discounted cash flows to estimate the fair values of the reporting units. For each unit tested, the estimated fair value exceeded the carrying value of the reporting unit, and the Company concluded that the associated goodwill was recoverable for each reporting unit tested, with the exception of Reserve National. In 2022, Kemper completed the sale of Reserve National to Medical Mutual of Ohio. As a result of the sale, goodwill attributed to Reserve National was separately tested for recoverability and the Company incurred goodwill impairment of $11.4 million. The remaining $0.3 million of goodwill attributable to Reserve National was derecognized at the time of the sale. See Note 5, “Dispositions”, for more information. The gross carrying amount and accumulated amortization of Definite and Indefinite life intangible assets at December 31, 2022 and 2021 were: 2022 2021 (Dollars in Millions) Gross Carrying Amount Accumulated Amortization Net Amount Gross Accumulated Amortization Net Amount Definite Life Intangible Assets: Value of Business Acquired $ 237.5 $ 222.1 $ 15.4 $ 237.5 $ 218.5 $ 19.0 Customer Relationships 43.8 41.1 2.7 43.8 38.1 5.7 Agent Relationships 81.6 31.0 50.6 81.6 23.6 58.0 Trade Names 1.8 1.7 0.1 1.8 0.9 0.9 Internal-Use Software 352.1 153.9 198.2 341.7 132.4 209.3 Total Definite Life Intangible Assets 716.8 449.8 267.0 706.4 413.5 292.9 Indefinite Life Intangible Assets: Trade Names 5.2 — 5.2 5.2 — 5.2 Insurance Licenses 44.5 — 44.5 45.1 — 45.1 Total Indefinite Life Intangible Assets 49.7 — 49.7 50.3 — 50.3 Total Intangible Assets $ 766.5 $ 449.8 $ 316.7 $ 756.7 $ 413.5 $ 343.2 The Company records intangible assets acquired in business combinations and certain costs incurred developing and customizing internal-use software within Other Assets on the Consolidated Balance Sheets. Definite life intangible assets are amortized over the estimated profit emergence period or estimated useful life of the asset. Indefinite life intangible assets are not amortized, but rather tested annually for impairment. In 2022 and 2021, the Company recognized amortization expense on definite life intangible assets of $53.7 million and $87.0 million, respectively. NOTE 13. GOODWILL AND INTANGIBLE ASSETS (Continued) The amount of amortization expense expected to be recorded in the next five years for definite life intangible assets is as follows: DOLLARS IN MILLIONS 2023 2024 2025 2026 2027 Definite Life Intangible Assets: Value of Business Acquired $ 1.8 $ 1.6 $ 1.6 $ 1.5 $ 1.5 Customer Relationships 1.1 0.4 0.4 0.3 0.2 Agent Relationships 7.3 5.5 4.9 4.9 1.2 Internal-Use Software 37.2 30.3 23.8 20.2 15.3 Total $ 47.4 $ 37.8 $ 30.7 $ 26.9 $ 18.2

Variable Interest Entities

Variable Interest Entities	12 Months Ended
	Dec. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Variable Interest Entities	VARIABLE INTEREST ENTITIES The Company invests in an Alternative Energy Partnership formed to provide sustainable energy projects that are designed to generate a return primarily through the realization of federal tax credits. This entity was formed to invest in newly installed residential solar leases and power purchase agreements. As a result of this investment, the Company has the right to certain investment tax credits and tax depreciation benefits, and to a lesser extent, cash flows generated from the installed solar systems leased to individual consumers. The Company’s interest in the Alternative Energy Partnership Investment is considered an investment in a variable interest entity (“VIE”). To determine whether the investment should be consolidated in the Consolidated Financial Statements, the Company evaluates whether it is the primary beneficiary of the VIE. The primary beneficiary is the party that has both the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance and the obligation to absorb losses or the right to receive benefits from the VIE that could potentially be significant to the VIE. The Company has determined that it is not the primary beneficiary as it does not have the power to direct the activities that most significantly impact the economic performance of the entity and therefore is not required to consolidate the VIE. The project sponsor governs the entity and the Company only has consent rights that have been deemed protective in nature and does not participate in key economic decisions of the entity. The investment is accounted for using the equity method of accounting and included in Alternative Energy Partnership Investments in the Consolidated Balance Sheets. The Company uses the HLBV equity method to account for earnings and losses. This method provides an earnings allocation that appropriately reflects the substantive economics of the investment. Earnings and losses on the investment are reported in Change in Value of Alternative Energy Partnership Investments and investment tax credits are recognized in Income Tax Benefit (Expense) on the Consolidated Statements of (Loss) Income. The following table presents information regarding activity in the Company’s Alternative Energy Partnership Investments as of the periods indicated: Year Ended (Dollars in millions) Dec 31, 2022 Dec 31, 2021 Fundings $ — $ 80.0 Cash distribution from investment 3.3 0.5 Loss on investments in Alternative Energy Partnership (19.9) (61.2) Income tax credits recognized 4.3 73.9 Tax benefit recognized from Alternative Energy Partnership 3.7 5.1 NOTE 14. VARIABLE INTEREST ENTITIES (Continued) The following table represents the carrying value of the associated assets and liabilities and the associated maximum loss exposure of the Alternative Energy Partnership Investments as of the dates indicated: (Dollars in millions) Dec 31, 2022 Cash $ 3.0 Equipment, net of depreciation 261.7 Other assets 5.1 Total unconsolidated assets 269.7 Maximum loss exposure 16.3 The Company’s maximum loss exposure in the event that all of the assets in the Alternative Energy Partnership are deemed worthless is $16.3 million, which is the carrying value of the investment at December 31, 2022.

Other Comprehensive Income (Los

Other Comprehensive Income (Loss) And Accumulated Other Comprehensive Income	12 Months Ended
	Dec. 31, 2022
Equity [Abstract]
Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Income	OTHER COMPREHENSIVE (LOSS) INCOME AND ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME The tables below display the changes in Accumulated Other Comprehensive (Loss) Income by component for the years ended December 31, 2022, 2021 and 2020: (Dollars in Millions) Net Unrealized Gains (Losses) on Other Investments Net Unrealized Gains (Losses) on Investments with an Allowance for Credit Losses Net Unrecognized Postretirement Benefit Costs (Loss) Gain on Cash Flow Hedges Total Balance as of January 1, 2020 $ 439.4 $ — $ (100.6) $ (2.7) $ 336.1 Other Comprehensive Income (Loss) Before Reclassifications 304.4 (2.1) 4.3 0.4 307.0 Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) Net of Tax Benefit (Expense) of $3.6, $—, $(13.5), $— and $(9.9) (13.2) — 50.6 — 37.4 Other Comprehensive Income (Loss) Net of Tax (Expense) Benefit of $(78.7), $0.5, $(15.3), $— and $(93.5) 291.2 (2.1) 54.9 0.4 344.4 Balance as of December 31, 2020 $ 730.6 $ (2.1) $ (45.7) $ (2.3) $ 680.5 Other Comprehensive Loss Before Reclassifications (182.0) (1.6) (6.5) — (190.1) Amounts Reclassified from Accumulated Other Comprehensive Loss Net of Tax Benefit (Expense) of $11.3, $—, $—, $(0.1) and $11.2 (42.8) — 0.1 0.4 (42.3) Other Comprehensive (Loss) Income Net of Tax Benefit (Expense) of $59.7, $0.4, $2.4, $(0.1) and $62.4 (224.8) (1.6) (6.4) 0.4 (232.4) Balance as of December 31, 2021 $ 505.8 $ (3.7) $ (52.1) $ (1.9) $ 448.1 Other Comprehensive (Loss) Income Before Reclassifications (1,215.1) 2.0 15.2 4.7 (1,193.2) Amounts Reclassified from Accumulated Other Comprehensive (Loss) Income Net of Tax Benefit (Expense) of $2.7, $0.1, $0.1, $— and $2.9 (10.1) (0.5) (0.3) — (10.9) Other Comprehensive (Loss) Income Net of Tax Benefit (Expense) of $325.9, $(0.4), $(4.0), $(1.2) and $320.3 (1,225.2) 1.5 14.9 4.7 (1,204.1) Balance as of December 31, 2022 $ (719.4) $ (2.2) $ (37.2) $ 2.8 $ (756.0) NOTE 15. OTHER COMPREHENSIVE (LOSS) INCOME AND ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME (Continued) Amounts reclassified from Accumulated Other Comprehensive (Loss) Income shown above are reported in Net (Loss) Income as follows: Components of AOCI Consolidated Statements of (Loss) Income Line Item Affected by Reclassifications Net Unrealized Gains (Losses) on Other Investments and Net Unrealized Gains (Losses) on Investments with an Allowance for Credit Losses Net Realized Investment Gains and Impairment Losses Net Unrecognized Postretirement Benefit Costs Policyholders’ Benefits and Incurred Losses and Loss Adjustment Expenses, Insurance Expenses, and Interest and Other Expenses (Loss) Gain on Cash Flow Hedges Interest and Other Expenses

Pension Benefits

Pension Benefits	12 Months Ended
	Dec. 31, 2022
Retirement Benefits [Abstract]
Pension Benefits	PENSION BENEFITS Kemper sponsors a qualified defined benefit pension plan (the “Pension Plan”). The Pension Plan covers approximately 3,100 participants and beneficiaries. Effective January 1, 2006, the Pension Plan was closed to new hires and, effective June 30, 2016, benefit accruals were frozen for substantially all of the participants under the Pension Plan. The Pension Plan is generally non-contributory, but participation requires or required some employees to contribute 3% of pay, as defined, per year. Benefits for participants who are or were required to contribute to the Pension Plan are based on compensation during plan participation and the number of years of participation. Benefits for the vast majority of participants who are not required to contribute to the Pension Plan are based on years of service and final average pay, as defined. The Company funds the Pension Plan in accordance with the requirements of the Employee Retirement Income Security Act of 1974, as amended (“ ERISA”). Changes in Fair Value of Plan Assets and Changes in Projected Benefit Obligation for the Pension Plan for the years ended December 31, 2022 and 2021 is presented below. DOLLARS IN MILLIONS 2022 2021 Fair Value of Plan Assets at Beginning of Year $ 391.7 $ 405.4 Actual Return on Plan Assets (65.1) (0.7) Benefits Paid (13.7) (13.0) Settlement Benefits 2.9 — Fair Value of Plan Assets at End of Year 315.8 391.7 Projected Benefit Obligation at Beginning of Year 378.8 382.3 Interest Cost 8.7 7.2 Benefits Paid (13.7) (13.0) Settlement Benefits 2.9 — Plan Amendments — 18.3 Actuarial Gains (84.5) (16.0) Projected Benefit Obligation at End of Year 292.2 378.8 Funded Status—Plan Assets in Excess of Projected Benefit Obligation $ 23.6 $ 12.9 Unamortized Amount Reported in AOCI at End of Year $ (63.1) $ (77.6) Accumulated Benefit Obligation at End of Year $ 289.3 $ 378.8 NOTE 17. PENSION BENEFITS (Continued) The measurement dates of the assets and liabilities at end of year presented in the preceding table under the headings, “2022” and “2021” were December 31, 2022 and December 31, 2021, respectively. In 2021, the Plan was amended to update the actuarial equivalence used to determine both the early retirement factors and the optional form factors as of December 31, 2021. The result of this amendment was an increase to the Projected Benefit Obligation of $18.3 million, which was recognized in Prior Service Cost for the year ended December 31, 2021. No such amendments took place for the year ended December 31, 2022. The weighted-average discount rate and rate of increase in future compensation levels used to estimate the components of the Projected Benefit Obligation for the Pension Plan at December 31, 2022 and 2021 were: 2022 2021 Discount Rate 5.05 % 2.89 % Rate of Increase in Future Compensation Levels — — Asset allocations for the Pension Plan at December 31, 2022 and 2021 by asset category were: ASSET CATEGORY 2022 2021 Corporate Bonds and Notes 27 % 30 % Bond Exchange Traded Funds 35 32 Cash and Short-term Investments 37 36 Other Assets 1 2 Total 100 % 100 % The investment objective of the Pension Plan is to produce current income and long-term capital growth through a combination of equity and fixed income investments which, together with appropriate employer contributions and any required employee contributions, is adequate to provide for the payment of the benefit obligations of the Pension Plan. The assets of the Pension Plan may be invested in fixed income and equity investments or any other investment vehicle or financial instrument deemed appropriate. Fixed income investments may include cash and short-term instruments, U.S. Government securities, corporate bonds, mortgages and other fixed income investments. Equity investments may include various types of stock, such as large-cap, mid-cap and small-cap stocks, and may also include investments in investment companies, collective investment funds and Kemper common stock (subject to Section 407 and other requirements of ERISA). The Pension Plan has not invested in Kemper common stock. The trust investment committee for the Pension Plan, along with its third party fiduciary advisor, periodically reviews the performance of the Pension Plan’s investments and asset allocation. Several external investment managers manage the equity investments of the trust for the Pension Plan. Each manager is allowed to exercise investment discretion, subject to limitations, if any, established by the trust investment committee for the Pension Plan. All other investment decisions are made by the Company, subject to general guidelines as set by the trust investment committee for the Pension Plan. The Company determines its Expected Long Term Rate of Return on Plan Assets based primarily on the Company’s expectations of future returns, with consideration to historical returns, for the Pension Plan’s investments, based on target allocations of the Pension Plan’s investments. NOTE 17. PENSION BENEFITS (Continued) The fair values of pension plan assets are estimated using the same methodologies and inputs as those used to determine the fair values for the respective asset category of the Company. These methodologies and inputs are disclosed in Note 12, “Fair Value Measurements,” to the Consolidated Financial Statements. Fair value measurements for the Pension Plan’s assets at December 31, 2022 are summarized below. DOLLARS IN MILLIONS Quoted Prices Significant Significant Measured at Net Asset Value Fair Value Fixed Maturities: U.S. Government and Government Agencies and Authorities $ 40.1 $ — $ — $ — $ 40.1 States and Political Subdivisions — 0.1 — — 0.1 Foreign Governments — 0.4 — — 0.4 Corporate Bonds and Notes — 45.4 — — 45.4 Equity Securities: Other Equity Interests: Bond Exchange Traded Funds 111.1 — — — 111.1 Limited Liability Companies and Limited Partnerships — — — 1.8 1.8 Short-term Investments 116.1 — — — 116.1 Receivables and Other 0.8 — — — 0.8 Total $ 268.1 $ 45.9 $ — $ 1.8 $ 315.8 Fair value measurements for the Pension Plan’s assets at December 31, 2021 are summarized below. DOLLARS IN MILLIONS Quoted Prices Significant Significant Measured at Net Asset Value Fair Value Fixed Maturities: U.S. Government and Government Agencies and Authorities $ 54.6 $ — $ — $ — $ 54.6 States and Political Subdivisions — 0.1 — — 0.1 Foreign Governments — 0.6 — — 0.6 Corporate Bonds and Notes — 62.3 — — 62.3 Equity Securities: Other Equity Interests: Bond Exchange Traded Funds 125.0 — — — 125.0 Limited Liability Companies and Limited Partnerships — — — 8.4 8.4 Short-term Investments 140.2 — — — 140.2 Receivables and Other 0.5 — — — 0.5 Total $ 320.3 $ 63.0 $ — $ 8.4 $ 391.7 NOTE 17. PENSION BENEFITS (Continued) The components of Comprehensive Pension (Income) Expense for the Pension Plan for the years ended December 31, 2022, 2021 and 2020 were: DOLLARS IN MILLIONS 2022 2021 2020 Service Cost Earned During the Year $ — $ — $ — Interest Cost on Projected Benefit Obligation 8.7 7.2 16.5 Expected Return on Plan Assets (7.4) (9.5) (27.6) Amortization of Prior Service Cost 0.7 — — Amortization of Actuarial Loss 1.8 2.9 5.6 Settlement Expense — — 64.1 Pension Expense Recognized in Consolidated Statements of (Loss) Income 3.8 0.6 58.6 Unrecognized Pension Loss Arising During the Year (12.0) (6.0) (7.8) Prior Service Cost Arising During the Year — 18.3 — Amortization of Prior Service Cost (0.7) — — Amortization of Accumulated Unrecognized Pension Loss (1.8) (2.9) (69.8) Comprehensive Pension (Income) Expense $ (10.7) $ 10.0 $ (19.0) The actuarial loss included in AOCI at December 31, 2022 is being amortized over approximately 26 years, the remaining average estimated life expectancy of participants. The Company estimates that Pension Expense for the Pension Plan for the year ended December 31, 2023 will include $1.4 million resulting from the amortization of the related accumulated actuarial loss included in AOCI at December 31, 2022. Settlements In the fourth quarter of 2020, the Company’s defined benefit pension plan purchased annuities on behalf of certain plan participants currently receiving benefits and offered to make lump-sum payments to certain inactive, vested plan participants that are not currently receiving benefit payments and elected to receive lump-sum payments. Group annuity contracts were purchased from Banner Life Insurance Company (“Banner”) for $202.5 million for a portion of plan participants for whom Banner irrevocably assumed the pension obligations. For plan participants who elected lump-sum payments during the election window, a payment of $117.1 million was distributed. These transactions resulted in a partial settlement of the defined pension plan and a $50.6 million noncash settlement charge to net income for the unamortized net unrecognized postretirement benefit costs related to the settled obligations. The weighted-average discount rate, service cost discount rate, interest cost discount rate, rate of increase in future compensation levels and expected long-term rate of return on plan assets used to develop the components of Pension Expense for the Pension Plan for the years ended December 31, 2022, 2021 and 2020 were: 2022 2021 2020 Weighted-average Discount Rate 2.89 % 2.56 % 2.56 % Service Cost Discount Rate N/A 2.41 2.42 Interest Cost Discount Rate 2.35 1.90 1.89 Rate of Increase in Future Compensation Levels 3.40 3.40 3.40 Expected Long Term Rate of Return on Plan Assets 2.08 2.70 4.90 The Company did not contribute to the Pension Plan in 2020, 2021 or 2022. The Company does not expect that it will be required to contribute to the Pension Plan in 2023, but could make a voluntary contribution pursuant to the maximum funding limits under ERISA. NOTE 17. PENSION BENEFITS (Continued) The following benefit payments (net of participant contributions), which consider expected future service of certain participants that remain eligible for a benefit accrual, as appropriate, are expected to be paid from the Pension Plan: DOLLARS IN MILLIONS Years Ending December 31, 2023 2024 2025 2026 2027 2028-2032 Estimated Pension Benefit Payments $ 18.0 $ 17.2 $ 18.0 $ 18.7 $ 19.2 $ 99.1 The Company also sponsors a non-qualified supplemental defined benefit pension plan (the “ Supplemental Plan”). Benefit accruals for all par ticipants in the Supplemental Plan were frozen effective June 30, 2016. The unfunded liability related to the Supplemental Plan was $22.0 million and $28.0 million at December 31, 2022 and 2021, respectively. Pension expense for the Supplemental Plan was $0.8 million, $0.7 million, and $0.8 million for the years ended December 31, 2022, 2021 and 2020, respectively. An actuarial gain of $4.8 million before taxes, an actuarial gain of $1.3 million before taxes and an actuarial loss of $2.7 million before taxes are included in Other Comprehensive (Loss) Income for the years ended December 31, 2022, 2021 and 2020, respectively.

Postretirement Benefits Other T

Postretirement Benefits Other Than Pensions	12 Months Ended
	Dec. 31, 2022
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Postretirement Benefits Other Than Pensions	PENSION BENEFITS Kemper sponsors a qualified defined benefit pension plan (the “Pension Plan”). The Pension Plan covers approximately 3,100 participants and beneficiaries. Effective January 1, 2006, the Pension Plan was closed to new hires and, effective June 30, 2016, benefit accruals were frozen for substantially all of the participants under the Pension Plan. The Pension Plan is generally non-contributory, but participation requires or required some employees to contribute 3% of pay, as defined, per year. Benefits for participants who are or were required to contribute to the Pension Plan are based on compensation during plan participation and the number of years of participation. Benefits for the vast majority of participants who are not required to contribute to the Pension Plan are based on years of service and final average pay, as defined. The Company funds the Pension Plan in accordance with the requirements of the Employee Retirement Income Security Act of 1974, as amended (“ ERISA”). Changes in Fair Value of Plan Assets and Changes in Projected Benefit Obligation for the Pension Plan for the years ended December 31, 2022 and 2021 is presented below. DOLLARS IN MILLIONS 2022 2021 Fair Value of Plan Assets at Beginning of Year $ 391.7 $ 405.4 Actual Return on Plan Assets (65.1) (0.7) Benefits Paid (13.7) (13.0) Settlement Benefits 2.9 — Fair Value of Plan Assets at End of Year 315.8 391.7 Projected Benefit Obligation at Beginning of Year 378.8 382.3 Interest Cost 8.7 7.2 Benefits Paid (13.7) (13.0) Settlement Benefits 2.9 — Plan Amendments — 18.3 Actuarial Gains (84.5) (16.0) Projected Benefit Obligation at End of Year 292.2 378.8 Funded Status—Plan Assets in Excess of Projected Benefit Obligation $ 23.6 $ 12.9 Unamortized Amount Reported in AOCI at End of Year $ (63.1) $ (77.6) Accumulated Benefit Obligation at End of Year $ 289.3 $ 378.8 NOTE 17. PENSION BENEFITS (Continued) The measurement dates of the assets and liabilities at end of year presented in the preceding table under the headings, “2022” and “2021” were December 31, 2022 and December 31, 2021, respectively. In 2021, the Plan was amended to update the actuarial equivalence used to determine both the early retirement factors and the optional form factors as of December 31, 2021. The result of this amendment was an increase to the Projected Benefit Obligation of $18.3 million, which was recognized in Prior Service Cost for the year ended December 31, 2021. No such amendments took place for the year ended December 31, 2022. The weighted-average discount rate and rate of increase in future compensation levels used to estimate the components of the Projected Benefit Obligation for the Pension Plan at December 31, 2022 and 2021 were: 2022 2021 Discount Rate 5.05 % 2.89 % Rate of Increase in Future Compensation Levels — — Asset allocations for the Pension Plan at December 31, 2022 and 2021 by asset category were: ASSET CATEGORY 2022 2021 Corporate Bonds and Notes 27 % 30 % Bond Exchange Traded Funds 35 32 Cash and Short-term Investments 37 36 Other Assets 1 2 Total 100 % 100 % The investment objective of the Pension Plan is to produce current income and long-term capital growth through a combination of equity and fixed income investments which, together with appropriate employer contributions and any required employee contributions, is adequate to provide for the payment of the benefit obligations of the Pension Plan. The assets of the Pension Plan may be invested in fixed income and equity investments or any other investment vehicle or financial instrument deemed appropriate. Fixed income investments may include cash and short-term instruments, U.S. Government securities, corporate bonds, mortgages and other fixed income investments. Equity investments may include various types of stock, such as large-cap, mid-cap and small-cap stocks, and may also include investments in investment companies, collective investment funds and Kemper common stock (subject to Section 407 and other requirements of ERISA). The Pension Plan has not invested in Kemper common stock. The trust investment committee for the Pension Plan, along with its third party fiduciary advisor, periodically reviews the performance of the Pension Plan’s investments and asset allocation. Several external investment managers manage the equity investments of the trust for the Pension Plan. Each manager is allowed to exercise investment discretion, subject to limitations, if any, established by the trust investment committee for the Pension Plan. All other investment decisions are made by the Company, subject to general guidelines as set by the trust investment committee for the Pension Plan. The Company determines its Expected Long Term Rate of Return on Plan Assets based primarily on the Company’s expectations of future returns, with consideration to historical returns, for the Pension Plan’s investments, based on target allocations of the Pension Plan’s investments. NOTE 17. PENSION BENEFITS (Continued) The fair values of pension plan assets are estimated using the same methodologies and inputs as those used to determine the fair values for the respective asset category of the Company. These methodologies and inputs are disclosed in Note 12, “Fair Value Measurements,” to the Consolidated Financial Statements. Fair value measurements for the Pension Plan’s assets at December 31, 2022 are summarized below. DOLLARS IN MILLIONS Quoted Prices Significant Significant Measured at Net Asset Value Fair Value Fixed Maturities: U.S. Government and Government Agencies and Authorities $ 40.1 $ — $ — $ — $ 40.1 States and Political Subdivisions — 0.1 — — 0.1 Foreign Governments — 0.4 — — 0.4 Corporate Bonds and Notes — 45.4 — — 45.4 Equity Securities: Other Equity Interests: Bond Exchange Traded Funds 111.1 — — — 111.1 Limited Liability Companies and Limited Partnerships — — — 1.8 1.8 Short-term Investments 116.1 — — — 116.1 Receivables and Other 0.8 — — — 0.8 Total $ 268.1 $ 45.9 $ — $ 1.8 $ 315.8 Fair value measurements for the Pension Plan’s assets at December 31, 2021 are summarized below. DOLLARS IN MILLIONS Quoted Prices Significant Significant Measured at Net Asset Value Fair Value Fixed Maturities: U.S. Government and Government Agencies and Authorities $ 54.6 $ — $ — $ — $ 54.6 States and Political Subdivisions — 0.1 — — 0.1 Foreign Governments — 0.6 — — 0.6 Corporate Bonds and Notes — 62.3 — — 62.3 Equity Securities: Other Equity Interests: Bond Exchange Traded Funds 125.0 — — — 125.0 Limited Liability Companies and Limited Partnerships — — — 8.4 8.4 Short-term Investments 140.2 — — — 140.2 Receivables and Other 0.5 — — — 0.5 Total $ 320.3 $ 63.0 $ — $ 8.4 $ 391.7 NOTE 17. PENSION BENEFITS (Continued) The components of Comprehensive Pension (Income) Expense for the Pension Plan for the years ended December 31, 2022, 2021 and 2020 were: DOLLARS IN MILLIONS 2022 2021 2020 Service Cost Earned During the Year $ — $ — $ — Interest Cost on Projected Benefit Obligation 8.7 7.2 16.5 Expected Return on Plan Assets (7.4) (9.5) (27.6) Amortization of Prior Service Cost 0.7 — — Amortization of Actuarial Loss 1.8 2.9 5.6 Settlement Expense — — 64.1 Pension Expense Recognized in Consolidated Statements of (Loss) Income 3.8 0.6 58.6 Unrecognized Pension Loss Arising During the Year (12.0) (6.0) (7.8) Prior Service Cost Arising During the Year — 18.3 — Amortization of Prior Service Cost (0.7) — — Amortization of Accumulated Unrecognized Pension Loss (1.8) (2.9) (69.8) Comprehensive Pension (Income) Expense $ (10.7) $ 10.0 $ (19.0) The actuarial loss included in AOCI at December 31, 2022 is being amortized over approximately 26 years, the remaining average estimated life expectancy of participants. The Company estimates that Pension Expense for the Pension Plan for the year ended December 31, 2023 will include $1.4 million resulting from the amortization of the related accumulated actuarial loss included in AOCI at December 31, 2022. Settlements In the fourth quarter of 2020, the Company’s defined benefit pension plan purchased annuities on behalf of certain plan participants currently receiving benefits and offered to make lump-sum payments to certain inactive, vested plan participants that are not currently receiving benefit payments and elected to receive lump-sum payments. Group annuity contracts were purchased from Banner Life Insurance Company (“Banner”) for $202.5 million for a portion of plan participants for whom Banner irrevocably assumed the pension obligations. For plan participants who elected lump-sum payments during the election window, a payment of $117.1 million was distributed. These transactions resulted in a partial settlement of the defined pension plan and a $50.6 million noncash settlement charge to net income for the unamortized net unrecognized postretirement benefit costs related to the settled obligations. The weighted-average discount rate, service cost discount rate, interest cost discount rate, rate of increase in future compensation levels and expected long-term rate of return on plan assets used to develop the components of Pension Expense for the Pension Plan for the years ended December 31, 2022, 2021 and 2020 were: 2022 2021 2020 Weighted-average Discount Rate 2.89 % 2.56 % 2.56 % Service Cost Discount Rate N/A 2.41 2.42 Interest Cost Discount Rate 2.35 1.90 1.89 Rate of Increase in Future Compensation Levels 3.40 3.40 3.40 Expected Long Term Rate of Return on Plan Assets 2.08 2.70 4.90 The Company did not contribute to the Pension Plan in 2020, 2021 or 2022. The Company does not expect that it will be required to contribute to the Pension Plan in 2023, but could make a voluntary contribution pursuant to the maximum funding limits under ERISA. NOTE 17. PENSION BENEFITS (Continued) The following benefit payments (net of participant contributions), which consider expected future service of certain participants that remain eligible for a benefit accrual, as appropriate, are expected to be paid from the Pension Plan: DOLLARS IN MILLIONS Years Ending December 31, 2023 2024 2025 2026 2027 2028-2032 Estimated Pension Benefit Payments $ 18.0 $ 17.2 $ 18.0 $ 18.7 $ 19.2 $ 99.1 The Company also sponsors a non-qualified supplemental defined benefit pension plan (the “ Supplemental Plan”). Benefit accruals for all par ticipants in the Supplemental Plan were frozen effective June 30, 2016. The unfunded liability related to the Supplemental Plan was $22.0 million and $28.0 million at December 31, 2022 and 2021, respectively. Pension expense for the Supplemental Plan was $0.8 million, $0.7 million, and $0.8 million for the years ended December 31, 2022, 2021 and 2020, respectively. An actuarial gain of $4.8 million before taxes, an actuarial gain of $1.3 million before taxes and an actuarial loss of $2.7 million before taxes are included in Other Comprehensive (Loss) Income for the years ended December 31, 2022, 2021 and 2020, respectively.
Other Postretirement Benefit Plan, Defined Benefit
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Postretirement Benefits Other Than Pensions	POSTRETIREMENT BENEFITS OTHER THAN PENSIONS Kemper and Infinity Property and Casualty Corporation (“Infinity”) sponsor other than pension postretirement employee benefit plans (“OPEB”) that together provide medical, dental and/or life insurance benefits to approximately 400 retired and 500 active employees. Kemper has historically self-insured the benefits under the Kemper OPEB Plan. The Kemper medical plan generally provides for a limited number of years of medical insurance benefits at retirement based on the participant’s attained age at retirement and number of years of service until specified dates and generally has required participant contributions, with most contributions adjusted annually. On December 30, 2016, Kemper amended the Kemper OPEB Plan and, effective December 31, 2016, no longer offers coverage to post-65 Medicare-eligible retirees and Medicare-eligible spouses under the self-insured portion of its coverage. Rather, beginning on January 1, 2017, the Kemper OPEB Plan offers access to a private, third-party Medicare exchange and provides varying levels of a Company-determined subsidy via health reimbursement accounts to certain Medicare-eligible retirees and spouses in order to help fund a portion of the participants’ cost. Further, the amendment eliminates the requirement for such participants to contribute to the Kemper OPEB Plan. In conjunction with the amendment, the Company recorded a pre-tax reduction to its Accumulated Postretirement Benefit Obligation of $11.0 million through Other Comprehensive (Loss) Income. This prior service credit is being amortized into income over the remaining average life of the Kemper OPEB Plan’s participants. NOTE 18. POSTRETIREMENT BENEFITS OTHER THAN PENSIONS (Continued) Changes in Fair Value of Plans’ Assets and Changes in Accumulated Postretirement Benefit Obligation for the years ended December 31, 2022 and 2021 were: DOLLARS IN MILLIONS 2022 2021 Fair Value of Plans’ Assets at Beginning of Year $ — $ — Employer Contributions 1.0 1.1 Plan Participants’ Contributions 0.3 0.1 Benefits Paid (1.3) (1.2) Fair Value of Plan Assets at End of Year — — Accumulated Postretirement Benefit Obligation at Beginning of Year 11.2 13.7 Service Cost 0.2 0.3 Interest Cost 0.2 0.1 Plan Participants’ Contributions 0.3 0.1 Benefits Paid (1.3) (1.2) Actuarial Gain (2.5) (1.8) Accumulated Postretirement Benefit Obligation at End of Year 8.1 11.2 Funded Status—Accumulated Postretirement Benefit Obligation in Excess of Plans’ Assets $ (8.1) $ (11.2) Unamortized Actuarial Gain Reported in AOCI at End of Year $ 16.9 $ 17.5 The measurement dates of the assets and liabilities at end of year in the preceding table under the headings “2022” and “2021” were December 31, 2022 and December 31, 2021, respectively. The weighted-average discount rate and rate of increase in future compensation levels used to develop the components of the Accumulated Postretirement Benefit Obligation at December 31, 2022 and 2021 were: 2022 2021 Discount Rate 5.08 % 2.56 % Rate of Increase in Future Compensation Levels 2.20 2.20 The assumed health care cost trend rate used in measuring the Accumulated Postretirement Benefit Obligation at December 31, 2022 was 6.04% for 2023, gradually declining to 4.8% in the year 2029 and remaining at that level thereafter for medical benefits and 6.66% for 2023, gradually declining to 4.8% in the year 2030 and remaining at that level thereafter for prescription drug benefits. The assumed health care cost trend rate used in measuring the Accumulated Postretirement Benefit Obligation at December 31, 2021 was 6.29% for 2022, gradually declining to 4.8% in the year 2028 and remaining at that level thereafter for medical benefits and 7.04% for 2022, gradually declining to 4.8% in the year 2029 and remaining at that level thereafter for prescription drug benefits. The components of Comprehensive OPEB (Income) Expense for the years ended December 31, 2022, 2021 and 2020 were: DOLLARS IN MILLIONS 2022 2021 2020 Service Cost Earned During the Year $ 0.2 $ 0.3 $ 0.2 Interest Cost on Accumulated Postretirement Benefit Obligation 0.2 0.1 0.3 Amortization of Prior Service Credit (1.3) (1.3) (1.3) Amortization of Accumulated Unrecognized OPEB Gain (1.8) (1.7) (1.9) OPEB Income Recognized in Consolidated Statements of (Loss) Income (2.7) (2.6) (2.7) Unrecognized OPEB (Gain) Loss Arising During the Year (2.5) (1.8) 1.9 Amortization of Prior Service Credit 1.3 1.3 1.3 Amortization of Accumulated Unrecognized OPEB Gain 1.8 1.7 1.9 Comprehensive OPEB (Income) Expense $ (2.1) $ (1.4) $ 2.4 NOTE 18. POSTRETIREMENT BENEFITS OTHER THAN PENSIONS (Continued) The Company estimates that OPEB Expense for the year ended December 31, 2023 will include income of $3.1 million resulting from the amortization of the related accumulated actuarial gain and prior service credit included in AOCI at December 31, 2022. The weighted-average discount rate and rate of increase in future compensation levels used to develop OPEB Expense for the years ended December 31, 2022, 2021 and 2020 were: 2022 2021 2020 Weighted-average Discount Rate 2.56 % 1.99 % 2.96 % Service Cost Discount Rate 2.79 2.06 2.94 Interest Cost Discount Rate 1.97 1.19 2.47 Effective Rate for Interest on Service Cost 2.54 — — Rate of Increase in Future Compensation Levels 2.20 2.20 2.20 The Company expects to contribute $1.0 million, net of the expected Medicare Part D subsidy, to its OPEB Plan to fund benefit payments in 2023. The following benefit payments (net of participant contributions), which consider expected future service, as appropriate, are expected to be paid: DOLLARS IN MILLIONS Years Ending December 31, 2023 2024 2025 2026 2027 2028-2032 Estimated Benefit Payments: Excluding Medicare Part D Subsidy $ 1.0 $ 1.1 $ 1.0 $ 0.9 $ 0.8 $ 3.2 Expected Medicare Part D Subsidy — — — — — — Net Estimated Benefit Payments $ 1.0 $ 1.1 $ 1.0 $ 0.9 $ 0.8 $ 3.2

Long-term Equity-based Compensa

Long-term Equity-based Compensation	12 Months Ended
	Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]
Long-Term Equity-Based Compensation	LONG-TERM EQUITY-BASED COMPENSATION On May 5, 2020, Kemper’s shareholders approved the 2020 Omnibus Equity Plan (“2020 Omnibus Plan”). A maximum number of 7,000,000 shares of Kemper common stock may be issued under the 2020 Omnibus Plan (the “Share Authorization”). After the approval date of the 2020 Omnibus Plan, no new awards will be granted under the 2011 Omnibus Equity Plan (“2011 Omnibus Plan”) that had been approved by Kemper’s Shareholders on May 4, 2011, but awards previously granted under the 2011 Omnibus Plan remain outstanding in accordance with their original terms. As of December 31, 2022, there were 2,873,336 common shares available for future grants under the 2020 Omnibus Plan, of which 1,831,722 shares were reserved for future grants based on the performance results under the terms of outstanding performance share units (“PSUs”). The design of the 2020 Omnibus Plan provides for fungible use of shares to determine the number of shares available for future grants, with a fungible conversion factor of three to one, such that the Share Authorization will be reduced at two different rates, depending on the type of award granted. Each share of Kemper common stock issuable upon the exercise of stock options or stock appreciation rights will reduce the number of shares available for future grant under the Share Authorization by one share, while each share of Kemper common stock issued pursuant to “full value awards” will reduce the number of shares available for future grant under the Share Authorization by three shares. “Full value awards” are awards, other than stock options or stock appreciation rights, that are settled by the issuance of shares of Kemper common stock and include time-based restricted stock units (collectively “RSUs”) and PSUs. Outstanding equity-based compensation awards at December 31, 2022 consisted of tandem stock option and stock appreciation rights (“Tandem Awards”), RSUs, PSUs and Deferred Stock Units (“DSUs”). RSUs, PSUs and DSUs give the recipient the right to receive one share of Kemper common stock for each RSU, PSU or DSU issued. Recipients of DSUs received full dividend equivalents on the same basis as all other outstanding shares of Kemper common stock, but do not receive voting rights until such shares are issued. For grants under the 2020 Omnibus Plan, and for grants under the 2011 Plan beginning in November 2017, recipients of RSUs and PSUs receive dividend equivalents on the same basis as all other outstanding shares of Kemper common stock only if, to NOTE 19. LONG-TERM EQUITY-BASED COMPENSATION (Continued) the extent, and at the time that they vest and on subsequent dividend payment dates after they vest until the awards are settled, and do not receive voting rights until such shares are issued. For grants under the 2011 Plan prior to November 2017, recipients of RSUs and PSUs receive full dividend equivalents on the same basis as all other outstanding shares of Kemper common stock, but do not receive voting rights until such shares are issued. Except as described below for certain equity-based compensation awards granted to each member of the Board of Directors who is not employed by the Company (“Non-employee Directors”), all outstanding awards are subject to forfeiture until certain restrictions have lapsed. For awards subject to a performance condition, the Company recognizes compensation expense based upon the probable outcome of the performance condition. The estimate is revised if the actual number of PSUs expected to vest is likely to differ from the previous estimate. Compensation expense for awards is recognized on a straight-line basis over the requisite service period. For equity-based compensation awards with a graded vesting schedule, the Company recognizes compensation expense on a straight-line basis over the requisite service period for each separately-vesting portion of the awards as if each award were, in substance, multiple awards. Compensation expense is recognized only for those awards expected to vest, with forfeitures estimated at the date of grant based on the Company’s historical experience and future expectations. Equity-based compensation expense was $17.7 million, $28.0 million and $24.9 million for the years ended December 31, 2022, 2021 and 2020, respectively. Total unamortized compensation expense related to unvested awards at December 31, 2022 was $24.3 million, which is expected to be recognized over the next three years ending December 31, 2023, 2024 and 2025. Human Resources and the Compensation Committee of the Board of Directors, or the Board’s authorized designee, has sole discretion to determine the persons to whom awards under the 2020 Omnibus Plan are granted, and the material terms of the awards. For Tandem Awards, material terms include the number of shares covered by such awards and the exercise price, vesting and expiration dates of such awards. Tandem Awards are non-transferable. The exercise price of Tandem Awards is the fair value of Kemper’s common stock on the date of grant. Tandem Awards and RSU awards granted to employees generally vest in three equal annual installments over a period of three years, with the Tandem Awards expiring ten years from the date of grant. Employee PSU awards generally vest over a period of three years, subject to performance results and other restrictions. Under the Non-employee Director compensation program in effect for 2022, each Non-employee Director elected at the 2022 annual shareholder meeting received an annual RSU award with an aggregate grant date fair value of $130,000 (“Director RSUs”) at the conclusion of the meeting, and new Non-employee Directors who joined the Board received an initial award of Director RSUs valued at the percentage of the full grant date fair value of $130,000 that represents the number of quarterly Board meetings the new director was expected to attend during the remaining portion of the then-current annual compensation period that ends on the date of the next annual shareholder meeting. The Director RSUs vest over a period of one year, enable the award holder to make an election to defer the conversion to shares of common stock in accordance with applicable deferral rules, and include the right to receive dividend equivalents on the same basis as all other outstanding shares of Kemper common stock only if, to the extent, and at the time that they vest and on subsequent dividend payment dates after they vest until the awards are settled. Each Non-employee Director elected at the 2021 annual shareholder meeting received an annual Director RSU award with an aggregate grant date fair value of $130,000 at the conclusion of the meeting, and, each Non-employee Director elected at the 2020 annual shareholder meeting received an annual Director RSU award with an aggregate grant date fair value of $130,000 at the conclusion of the meeting, under the Non-employee Director compensation program in effect for the applicable year. The Company uses the Black-Scholes option pricing model to estimate the fair value of each Tandem Award on the date of grant. The expected terms of Tandem Awards are developed by considering the Company’s historical Tandem Award exercise experience, demographic profiles, historical share retention practices of employees and assumptions about their propensity for early exercise in the future. Expected volatility is estimated using weekly historical volatility. The Company believes that historical volatility is currently the best estimate of expected volatility. The dividend yield in 2022, 2021 and 2020 was calculated by taking the natural logarithm of the annualized yield divided by the Kemper common stock price on the date of grant. The risk-free interest rate was the yield on the grant date of U.S. Treasury zero coupon issues with a maturity comparable to the expected term of the option. NOTE 19. LONG-TERM EQUITY-BASED COMPENSATION (Continued) The assumptions used in the Black-Scholes pricing model for Tandem Awards granted during the years ended December 31, 2022, 2021 and 2020 are presented below. 2022 2021 2020 RANGE OF VALUATION ASSUMPTIONS Expected Volatility 33.20 % - 37.67 % 33.67 % - 38.04 % 29.22 % - 37.27 % Risk-free Interest Rate 1.20 - 4.33 0.26 - 1.33 0.17 - 1.46 Expected Dividend Yield 1.59 - 2.25 1.18 - 1.78 1.19 - 1.48 WEIGHTED-AVERAGE EXPECTED LIFE IN YEARS Employee Grants 4 - 6 4 - 6 4 - 6 Tandem Award activity for the year ended December 31, 2022 is presented below. Shares Weighted- Weighted- Aggregate Outstanding at Beginning of the Year 2,103,979 $ 61.93 Granted 537,768 52.70 Exercised (18,937) 35.95 Forfeited or Expired (297,234) 69.06 Outstanding at December 31, 2022 2,325,576 59.10 6.23 $ 6.2 Vested and Expected to Vest at December 31, 2022 2,259,869 $ 59.05 6.16 $ 6.2 Exercisable at December 31, 2022 1,565,065 $ 58.91 5.05 $ 6.2 The weighted-average grant-date fair values of Tandem Awards granted during 2022, 2021 and 2020 were $14.67, $19.29 and $19.24, respectively. Total intrinsic value of Tandem Awards exercised was $0.3 million, $1.3 million and $7.1 million for the years ended December 31, 2022, 2021 and 2020, respectively. Cash received from exercises of Tandem Awards was $0.6 million, $3.7 million and $5.0 million for the years ended December 31, 2022, 2021 and 2020, respectively. Total tax benefit realized for tax deductions from exercises of Tandem Awards was $0.1 million, $0.3 million and $1.5 million for the years ended December 31, 2022, 2021 and 2020, respectively. Information pertaining to Tandem Awards outstanding at December 31, 2022 is presented below. Outstanding Exercisable Range of Exercise Prices ($) Shares Weighted- Weighted- Shares Weighted- $ 20.01 - 30.00 104,562 $ 27.71 3.17 104,562 $ 27.71 30.01 - 40.00 107,969 33.98 2.23 107,969 33.98 40.01 - 50.00 345,616 42.44 3.74 345,616 42.44 50.01 - 60.00 798,652 55.44 7.57 306,082 59.83 60.01 - 70.00 335,981 69.24 7.54 149,172 68.72 70.01 - 80.00 604,689 76.60 6.38 527,043 76.53 80.01 - 90.00 28,107 83.40 6.54 24,621 83.74 20.01 - 90.00 2,325,576 59.10 6.23 1,565,065 58.91 The grant-date fair values of RSUs are determined using the closing price of Kemper common stock on the date of grant. NOTE 19. LONG-TERM EQUITY-BASED COMPENSATION (Continued) Activity related to nonvested RSUs for the year ended December 31, 2022 is presented below. Time-based Restricted Stock Unit Awards Number of Restricted Stock Units Weighted- Nonvested Balance at Beginning of the Year 81,701 $ 69.82 Granted 531,841 52.29 Vested (30,591) 71.43 Forfeited (104,697) 53.60 Nonvested Balance at December 31, 2022 478,254 $ 53.78 The initial number of PSUs awarded to each participant represents the number of Kemper common shares that would vest and be issued if the performance level attained were to be at the “target” performance level. For performance above the target level, each participant would receive a grant of additional shares of stock up to a maximum of 100% of the initial number of PSUs awarded to the participant. The final payout of these awards, and any forfeitures of PSUs for performance below the “target” performance level, will be determined based on the Company’s performance. If, at the end of the applicable performance period, the Company’s performance: • exceeds the “target” performance level, all of the PSUs will vest and additional shares of stock will be issued to the award recipient; • is below the “target” performance level, but at or above a “minimum” performance level, only a portion of the PSUs originally issued to the award recipient will vest; or • is below a “minimum” performance level, none of the PSUs originally issued to the award recipient will vest. Activity related to nonvested PSU awards for the year ended December 31, 2022 is presented below. PSU Awards Number of PSUs Weighted- Nonvested Balance at Beginning of the Year 600,321 $ 79.15 Granted 305,035 55.90 Vested (113,651) 73.69 Forfeited (181,131) 78.38 Nonvested Balance at December 31, 2022 610,574 $ 68.78 The number of additional shares that would be granted if the Company were to meet or exceed the maximum performance levels related to the outstanding PSU awards for the 2022, 2021 and 2020 three-year performance periods was 219,691 common shares, 214,076 common shares and 176,807 common shares, respectively, (as “full value awards,” the equivalent of 659,073 shares, 642,228 shares, and 530,421 shares, respectively, under the Share Authorization) at December 31, 2022. The grant date fair values of the PSU awards with a market performance condition are determined using the Monte Carlo simulation method. The Monte Carlo simulation model produces a risk-neutral simulation of the daily returns on the common stock of Kemper and each of the other companies included in the peer group. Returns generated by the simulation depend on the risk-free interest rate used and the volatilities of, and the correlation between, these stocks. The model simulates stock prices and dividend payouts to the end of the three-year performance period. Total shareholder returns are generated for each of these stocks based on the simulated prices and dividend payouts. The total shareholder returns are then ranked, and Kemper’s simulated ranking is converted to a payout percentage based on the terms of the PSU awards. The payout percentage is applied NOTE 19. LONG-TERM EQUITY-BASED COMPENSATION (Continued) to the simulated stock price at the end of the performance period, reinvested dividends are added back, and the total is discounted to the valuation date at the risk-free rate. This process is repeated approximately ten thousand times, and the grant date fair value is equal to the average of the results from these trials. Sixty-seven percent of the PSU awards granted to employees in 2022, sixty-seven percent of the PSU awards granted to employees in 2021 and sixty-seven percent of the PSU awards granted to employees in 2020 are measured using a market performance condition. Fair value for these awards was estimated using the Monte Carlo simulation method described above. Final payout for these awards, and any forfeitures of units for performance below the “target” performance level, will be based on Kemper’s total shareholder return, relative to a peer group comprised of all the companies in the S&P Supercomposite Insurance Index, over a three-year performance period. The three-year performance periods for the 2022, 2021 and 2020 awards end on January 31, 2025, January 31, 2024 and January 31, 2023, respectively. Compensation cost for these awards is recognized ratably over the requisite service period. In the event that the market performance condition is not satisfied, previously recognized compensation cost would not reverse, but it would reverse if the requisite service period is not met. Thirty-three percent of the PSU awards granted to employees and officers in 2022, thirty-three percent of the PSU awards granted to employees in 2021 and thirty-three percent of the PSU awards granted to employees in 2020 are measured solely using a Company-specific metric. Final payout for these awards, and any forfeitures of shares for performance below the “target” performance level, will be determined based on Kemper’s adjusted return on equity over a three-year performance period. The three-year performance periods for the 2022, 2021 and 2020 awards end on December 31, 2024, December 31, 2023 and December 31, 2022, respectively. Fair value for these awards was determined using the closing price of Kemper common stock on the date of grant. Accruals of compensation cost for these awards are estimated based on the probable outcome of the performance condition. The total fair value of RSUs and PSUs that vested during the year ended December 31, 2022 was $7.5 million. The tax benefits for tax deductions realized from such awards was $1.6 million. The total fair value of RSUs and PSUs that vested during the year ended December 31, 2021 was $19.6 million. The tax benefits for tax deductions realized from such awards was $4.1 million. The total fair value of RSUs and PSUs that vested during the year ended December 31, 2020 was $20.4 million. The tax benefits for tax deductions realized from such awards was $4.3 million. The grant-date fair values of DSU awards granted to Non-employee Directors were determined using the closing price of Kemper common stock on the date of grant. Beginning in 2019 DSU awards are no longer issued to Non-employee Directors. All previously granted shares had vested upon issuance and as such, no DSUs vested during the years ended December 31, 2022, 2021 and 2020. Activity related to DSU awards for the year ended December 31, 2022 is presented below. Number of DSUs Weighted- Vested Balance at Beginning of the Year 44,820 $ 44.74 Reduction for Shares Issued on Conversion (8,220) 42.43 Vested Balance at December 31, 2022 36,600 $ 45.25

Policyholder Contract Liabiliti

Policyholder Contract Liabilities	12 Months Ended
	Dec. 31, 2022
Insurance [Abstract]
Policyholder Contract Liabilities	POLICYHOLDER OBLIGATIONS Policyholder Obligations at December 31, 2022 and 2021 were as follows: DOLLARS IN MILLIONS December 31, 2022 2021 FHLB Funding Agreements $ 601.0 $ 401.9 Universal Life-type Policyholder Account Balances 100.3 102.1 Total $ 701.3 $ 504.0 Kemper’s subsidiary, United Insurance Company of America (“United Insurance”) has entered into funding agreements with the FHLB of Chicago in exchange for cash, which it uses for spread lending purposes. United Insurance received advances of NOTE 20. POLICYHOLDER OBLIGATIONS (Continued) $334.8 million from the FHLB of Chicago and made repayments of $135.7 million under the spread lending program in 2022. United Insurance received advances of $300.4 million and made repayments of $306.3 million from the FHLB of Chicago in 2021 under the spread lending program. When a funding agreement is issued, United Insurance is then required to post collateral in the form of eligible securities including mortgage-backed, government, and agency debt instruments for each of the advances that are entered. The fair value of the collateral pledged must be maintained at certain specified levels above the borrowed amount, which can vary depending on the assets pledged. If the fair value of the collateral declines below these specified levels of the amount borrowed, United Insurance would be required to pledge additional collateral or repay outstanding borrowings. Upon any event of default by United Insurance, the FHLB’s recovery on the collateral is limited to the amount of United Insurance’s liability under the funding agreements to the FHLB of Chicago. United Insurance’s liability under the funding agreements with the FHLB of Chicago, the amount of collateral pledged under such agreements and FHLB of Chicago common stock owned by United Insurance at December 31, 2022 and 2021 is presented below. DOLLARS IN MILLIONS 2022 2021 Liability under Funding Agreements $ 601.0 $ 401.9 Fair Value of Collateral Pledged 744.6 556.6 FHLB of Chicago Common Stock Owned at Cost 17.5 11.8

Debt

Debt	12 Months Ended
	Dec. 31, 2022
Debt Disclosure [Abstract]
Debt	DEBT Amended and Extended Credit Agreement and Term Loan Facility On March 15, 2022, the Company entered into an amended and extended credit agreement. The amended and extended credit agreement increased the borrowing capacity of the existing unsecured credit agreement to $600.0 million and extended the maturity date to March 15, 2027. Furthermore, the amended and extended credit agreement provides for an accordion feature whereby the Company can increase the revolving credit borrowing capacity by $200.0 million to a total of $800.0 million. There were no outstanding borrowings under the credit agreement at either December 31, 2022 or December 31, 2021. The Company incurred $2.2 million of debt issuance costs in relation to the amended agreement. As of December 31, 2022 there were $2.2 million of remaining unamortized costs under the credit agreement, which will be amortized under the remaining term of the credit agreement. Long-term Debt The Company designates debt obligations as either short-term or long-term based on maturity date at issuance, or, in the case of the 2022 Senior Notes, based on the date of assumption. Total amortized cost of Long-term Debt outstanding at December 31, 2022 and 2021 was: (Dollars in Millions) Dec 31, 2022 Dec 31, 2021 Senior Notes: 5.000% Senior Notes due September 19, 2022 $ — $ 276.7 4.350% Senior Notes due February 15, 2025 449.3 449.0 2.400% Senior Notes due September 30, 2030 396.6 396.2 3.800% Senior Notes due February 23, 2032 395.5 — 5.875% Fixed-Rate Reset Junior Subordinated Debentures due 2062 145.5 — Total Long-term Debt Outstanding $ 1,386.9 $ 1,121.9 NOTE 21. DEBT (Continued) Redemption of 5.000% Senior Notes Due 2022 The liabilities of Infinity Property and Casualty Corporation (“Infinity”) at the date of Infinity’s acquisition included $275.0 million principal amount, 5.000% Senior Notes due September 19, 2022 (the “2022 Senior Notes”). The 2022 Senior Notes were recorded at fair value as of the acquisition date, $282.1 million, with the $7.1 million premium being amortized as a reduction to interest expense over the remaining term, resulting in an effective interest rate of 4.36%. On November 30, 2018, Kemper executed a guarantee to fully and unconditionally guarantee the payment and performance obligations of the 2022 Senior Notes. On February 23, 2022, Kemper issued a notice of redemption for the entire $275.0 million aggregate principal outstanding of the 2022 Senior Notes at a redemption price equal to 100% of their principal, plus accrued and unpaid interest on the redemption date. On March 25, 2022, Kemper completed the redemption, and the 2022 Senior Notes were repaid in full. The Company recognized a Loss from Early Extinguishment of Debt of $3.7 million in the first quarter of 2022 which is reflected in the Consolidated Statements of (Loss) Income. The Company used the proceeds received from Kemper’s 2032 Senior Notes offering to repay the 2022 Senior Notes. See “3.800% Senior Notes Due 2032” below for additional information regarding the debt issuance. 4.350% Senior Notes Due 2025 Kemper has $450.0 million aggregate principal of 4.350% senior notes due February 15, 2025 (the “2025 Senior Notes”). Kemper initially issued $250.0 million of the notes in February of 2015 and issued an additional $200.0 million of the notes in June of 2017. The additional notes are fungible with the initial notes issued in 2015, and together are treated as part of a single series for all purposes under the indenture governing the 2025 Senior Notes. The 2025 Senior Notes are unsecured and may be redeemed in whole at any time or in part from time to time at Kemper’s option at specified redemption prices. 2.400% Senior Notes Due 2030 Kemper has $400.0 million aggregate principal of 2.400% senior notes due September 30, 2030 (the “2030 Senior Notes”). The net proceeds of issuance were $395.8 million, net of discount and transaction costs for an effective yield of 2.52%. The 2030 Senior Notes are unsecured and may be redeemed in whole at any time or in part from time to time, at Kemper’s option, at specified redemption prices. 3.800% Senior Notes Due 2032 On February 15, 2022, Kemper offered and sold $400.0 million aggregate principal of 3.800% senior notes due February 23, 2032 (the “2032 Senior Notes”). The net proceeds of issuance were $395.1 million, net of discount and transaction costs for an effective yield of 3.950%. The 2032 Senior Notes are unsecured and may be redeemed in whole at any time or in part from time to time, at Kemper’s option, at specified redemption prices. In anticipation of the issuance of the 2032 Senior Notes and for risk management purposes, the Company entered into a derivative transaction to hedge the risk of changes in the debt cash flows attributable to changes in the benchmark U.S. Treasury interest rate during the period leading up to the debt issuance (“Treasury Lock”). The effective portion of the gain on the derivative instrument upon discontinuance was $5.9 million before taxes, and is reported as a component of Accumulated Other Comprehensive (Loss) Income 5.875% Fixed-Rate Reset Junior Subordinated Debentures Due 2062 On March 10, 2022, Kemper issued $150.0 million aggregate principal amount of 5.875% Fixed-Rate Reset Junior Subordinated Debentures due March 15, 2062 (the “2062 Junior Debentures”). The net proceeds from issuance were $144.7 million, net of discount and transaction costs. The 2062 Junior Debentures will bear interest from and including the date of original issue to, but excluding, March 15, 2027 (the “First Reset Date”) at the fixed rate of 5.875% per annum. The interest NOTE 21. DEBT (Continued) rate on the First Reset Date, and subsequent Reset Dates, will be equal to the Five-Year Treasury Rate as of the most recent Reset Date plus 4.140% to be reset on each Reset Date. Interest is due quarterly in arrears beginning on June 15, 2022. The Company has the option to defer interest payments for one or more optional deferral periods of up to five The 2062 Junior Debentures are unsecured and may be redeemed in whole or in part on the First Reset Date or any time thereafter, at a redemption price equal to the principal amount of the debentures being redeemed plus any accrued and unpaid interest. Short-term Debt Kemper’s subsidiaries, United Insurance, Trinity Universal Insurance Company (“Trinity”), American Access Casualty Company, and Alliance United Insurance Company (“Alliance”) are members of the FHLBs of Chicago, Dallas, Chicago, and San Francisco, respectively. As a requirement of membership in the FHLBs, United Insurance, Trinity and Alliance maintain a certain level of investment in FHLB stock. The Company periodically uses short-term FHLB borrowings for a combination of cash management and risk management purposes, in addition to long-term FHLB borrowings for spread lending purposes. The Company received advances and made repayments of $81.0 million and $85.0 million for the years ended December 31, 2022 and 2021, respectively, for cash and risk management purposes. There were no short-term debt advances from the FHLBs of Chicago, Dallas or San Francisco outstanding at December 31, 2022 or December 31, 2021. For information on United Insurance’s funding agreement with the FHLB of Chicago in connection with the spread lending program, see Note 20, “Policyholder Obligations,” to the Consolidated Financial Statements. Interest Expense and Interest Paid Interest Expense, including facility fees, accretion of discount, amortization of premium and amortization of issuance costs, was $54.7 million, $43.6 million and $36.0 million for the years ended December 31, 2022, 2021 and 2020 respectively. Interest paid, including facility fees, was $51.5 million, $43.9 million and $34.6 million for the years ended December 31, 2022, 2021 and 2020 respectively.

Leases

Leases	12 Months Ended
	Dec. 31, 2022
Leases [Abstract]
Leases	LEASES The Company leases certain office space under non-cancelable operating leases, with initial terms typically ranging from one one The following table presents operating lease right-of-use assets and lease liabilities. (Dollars in Millions) 2022 2021 Operating Lease Right-of-Use Assets $ 45.1 $ 64.4 Operating Lease Liabilities 72.6 84.8 NOTE 22. LEASES (Continued) Lease expenses are primarily included in insurance expenses in the Consolidated Statements of (Loss) Income. Additional information regarding the Company’s operating leases is presented below. (Dollars in Millions) 2022 2021 Lease Cost: Amortization of Right-of-Use Assets - Finance Leases $ — $ 0.2 Operating Lease Cost 21.3 22.3 Variable Lease Cost 0.3 0.2 Short-Term Lease Cost (1) 3.8 5.0 Total Lease Expense $ 25.4 $ 27.7 Less: Sub-Lease Income 0.1 0.3 Total Lease Cost $ 25.3 $ 27.4 (1) - Leases with an initial term of twelve months or less are not recorded on the Consolidated Balance Sheets. Other Information on Operating Leases Supplemental cash flow information related to the Company’s operating and finance leases for the year ended December 31, 2022 and 2021 is as follows: (Dollars in Millions) 2022 2021 Operating Cash Flows from Operating Lease (Fixed Payments) $ 24.0 $ 23.6 Operating Cash Flows from Operating Lease (Liability Reduction) 21.4 20.6 Financing Cash Flows from Finance Leases — 0.2 Right-of-Use Assets Obtained in Exchange for New Operating Lease Liabilities 9.7 15.5 Significant judgments and assumptions for determining lease asset and liability at December 31, 2022 and 2021 are presented below. 2022 2021 Weighted-average Remaining Lease Term - Finance Leases 0.1 years 1.0 year Weighted-average Remaining Lease Term - Operating Leases 5.6 years 5.8 years Weighted-average Discount Rate - Finance Leases 0.6 % 0.6 % Weighted-average Discount Rate - Operating Leases 3.6 % 3.4 % Most of the Company’s leases do not provide an implicit rate. Accordingly, the Company uses its incremental borrowing rate based on the information available at the commencement date in determining the present value of its lease payments. Future minimum lease payments under operating leases at December 31, 2022 are presented below. There are no significant future minimum lease payments under finance leases. (Dollars in Millions) 2023 $ 23.4 2024 17.6 2025 12.8 2026 6.2 2027 3.9 2028 and Thereafter 17.9 Total Future Payments $ 81.8 Less Imputed Interest 9.2 Present Value of Minimum Lease Payments $ 72.6
Leases	LEASES The Company leases certain office space under non-cancelable operating leases, with initial terms typically ranging from one one The following table presents operating lease right-of-use assets and lease liabilities. (Dollars in Millions) 2022 2021 Operating Lease Right-of-Use Assets $ 45.1 $ 64.4 Operating Lease Liabilities 72.6 84.8 NOTE 22. LEASES (Continued) Lease expenses are primarily included in insurance expenses in the Consolidated Statements of (Loss) Income. Additional information regarding the Company’s operating leases is presented below. (Dollars in Millions) 2022 2021 Lease Cost: Amortization of Right-of-Use Assets - Finance Leases $ — $ 0.2 Operating Lease Cost 21.3 22.3 Variable Lease Cost 0.3 0.2 Short-Term Lease Cost (1) 3.8 5.0 Total Lease Expense $ 25.4 $ 27.7 Less: Sub-Lease Income 0.1 0.3 Total Lease Cost $ 25.3 $ 27.4 (1) - Leases with an initial term of twelve months or less are not recorded on the Consolidated Balance Sheets. Other Information on Operating Leases Supplemental cash flow information related to the Company’s operating and finance leases for the year ended December 31, 2022 and 2021 is as follows: (Dollars in Millions) 2022 2021 Operating Cash Flows from Operating Lease (Fixed Payments) $ 24.0 $ 23.6 Operating Cash Flows from Operating Lease (Liability Reduction) 21.4 20.6 Financing Cash Flows from Finance Leases — 0.2 Right-of-Use Assets Obtained in Exchange for New Operating Lease Liabilities 9.7 15.5 Significant judgments and assumptions for determining lease asset and liability at December 31, 2022 and 2021 are presented below. 2022 2021 Weighted-average Remaining Lease Term - Finance Leases 0.1 years 1.0 year Weighted-average Remaining Lease Term - Operating Leases 5.6 years 5.8 years Weighted-average Discount Rate - Finance Leases 0.6 % 0.6 % Weighted-average Discount Rate - Operating Leases 3.6 % 3.4 % Most of the Company’s leases do not provide an implicit rate. Accordingly, the Company uses its incremental borrowing rate based on the information available at the commencement date in determining the present value of its lease payments. Future minimum lease payments under operating leases at December 31, 2022 are presented below. There are no significant future minimum lease payments under finance leases. (Dollars in Millions) 2023 $ 23.4 2024 17.6 2025 12.8 2026 6.2 2027 3.9 2028 and Thereafter 17.9 Total Future Payments $ 81.8 Less Imputed Interest 9.2 Present Value of Minimum Lease Payments $ 72.6

Catastrophe Reinsurance

Catastrophe Reinsurance	12 Months Ended
	Dec. 31, 2022
Reinsurance Disclosures [Abstract]
Catastrophe Reinsurance	CATASTROPHE REINSURANCE Catastrophes and natural disasters are inherent risks of the property and casualty insurance business. These catastrophic events and natural disasters include, without limitation, hurricanes, tornadoes, earthquakes, hailstorms, wildfires, high winds and winter storms. Such events result in insured losses that are, and will continue to be, a material factor in the results of operations and financial position of the Company’s property and casualty insurance companies. Further, because the level of these insured losses occurring in any one year cannot be accurately predicted, these losses may contribute to material year-to-year fluctuations in the results of operations and financial position of these companies. Specific types of catastrophic events are more likely to occur at certain times within the year than others. This factor adds an element of seasonality to property and casualty insurance claims. The Company has adopted the industry-wide catastrophe classifications of storms and other events promulgated by the Insurance Services Office (“ISO”) to track and report losses related to catastrophes. ISO classifies a disaster as a catastrophe when the event causes $25.0 million or more in direct insured losses to property and affects a significant number of policyholders and insurers. ISO-classified catastrophes are assigned a unique serial number recognized throughout the insurance industry. The discussions that follow utilize ISO’s definition of catastrophes. The Company manages its exposure to catastrophes and other natural disasters through a combination of geographical diversification, restrictions on the amount and location of new business production in certain regions, and reinsurance. To limit its exposures to catastrophic events, the Company maintains a catastrophe reinsurance program for the property and casualty insurance companies. In 2022, the property business written through the Life & Health segment was included in the catastrophe reinsurance program. Coverage for the catastrophe reinsurance program is provided in various layers through multiple excess of loss reinsurance contracts and an annual aggregate excess property catastrophe reinsurance contract. Coverage on individual catastrophes provided under the excess of loss reinsurance contracts effective January 1, 2022 to December 31, 2022 is provided in various layers as presented below. DOLLARS IN MILLIONS Catastrophe Losses and Percentage In Excess of Up to Retained $ — $ 50.0 — % 1st Layer of Coverage 50.0 150.0 95.0 2nd Layer of Coverage 150.0 250.0 95.0 3rd Layer of Coverage 250.0 325.0 95.0 4th Layer of Coverage 325.0 350.0 95.0 Coverage on individual catastrophes provided under the excess of loss reinsurance contracts effective January 1, 2021 to December 31, 2021 is provided in various layers as presented below. DOLLARS IN MILLIONS Catastrophe Losses and Percentage In Excess of Up to Retained $ — $ 50.0 — % 1st Layer of Coverage 50.0 150.0 95.0 2nd Layer of Coverage 150.0 250.0 95.0 3rd Layer of Coverage 250.0 275.0 95.0 Coverage on individual catastrophes provided under the excess of loss reinsurance contracts effective January 1, 2020 to December 31, 2020 is provided in various layers as presented below. DOLLARS IN MILLIONS Catastrophe Losses and Percentage In Excess of Up to Retained $ — $ 50.0 — % 1st Layer of Coverage 50.0 150.0 95.0 2nd Layer of Coverage 150.0 250.0 95.0 3rd Layer of Coverage 250.0 275.0 95.0 NOTE 23. CATASTROPHE REINSURANCE (Continued) In the event that the incurred catastrophe losses and LAE covered by the catastrophe reinsurance programs presented in the three preceding tables exceed the retention for that particular layer, each of the programs allow for one reinstatement of such coverage. In such an instance, the Company is required to pay a reinstatement premium to the reinsurers to reinstate the full amount of reinsurance available under such layer. Coverage provided under the 2022 aggregate property catastrophe reinsurance contract is summarized below. Aggregate Catastrophe DOLLARS IN MILLIONS In Excess of Up to Retained $ — $ 65.0 Coverage 65.0 115.0 Coverage provided under the 2021 aggregate property catastrophe reinsurance contract is summarized below. Aggregate Catastrophe DOLLARS IN MILLIONS In Excess of Up to Retained $ — $ 60.0 Coverage 60.0 110.0 The catastrophe reinsurance in 2022, 2021 and 2020 for the property and casualty insurance companies also included reinsurance coverage from the Florida Hurricane Catastrophe Fund (“FHCF”) for hurricane losses in Florida at retentions lower than those described above. The Life & Health Insurance segment also purchases reinsurance from the FHCF for hurricane losses in Florida. Reinsurance premiums for the Company’s catastrophe reinsurance programs and the FHCF Program reduced earned premiums for the years ended December 31, 2022, 2021 and 2020 by the following: DOLLARS IN MILLIONS 2022 2021 2020 Specialty Property & Casualty Insurance $ 8.9 $ 7.0 $ 4.8 Preferred Property & Casualty Insurance 22.5 22.0 20.7 Life & Health Insurance 0.6 1.3 1.2 Total Ceded Catastrophe Reinsurance Premiums $ 32.0 $ 30.3 $ 26.7 The Company did not pay any reinstatement premiums in 2022, 2021, or 2020. Catastrophe losses and LAE (including reserve development), net of reinsurance recoveries, for the years ended December 31, 2022, 2021 and 2020 by business segment are presented below. DOLLARS IN MILLIONS 2022 2021 2020 Specialty Property & Casualty Insurance $ 23.6 $ 16.0 $ 12.5 Preferred Property & Casualty Insurance 48.3 73.5 81.5 Life & Health Insurance 3.3 12.9 12.9 Total Catastrophe Losses and LAE $ 75.2 $ 102.4 $ 106.9 The Company had no material recoveries under its catastrophe reinsurance treaties for the years ended December 31, 2022 and 2021. Total prior year catastrophe loss and LAE reserves, net of reinsurance recoverables, developed favorably by $4.1 million in 2022, favorably by $5.4 million in 2021 and adversely by $0.2 million in 2020. The Specialty Property & Casualty Insurance segment reported adverse catastrophe reserve development of $0.6 million, $0.3 million, and $0.2 million in 2022, 2021 and 2020, respectively. The Preferred Property & Casualty Insurance segment reported favorable catastrophe reserve development of $6.2 million, $5.6 million and $0.5 million in 2022, 2021 and 2020, respectively. The Life & Health Insurance segment NOTE 23. CATASTROPHE REINSURANCE (Continued) reported adverse catastrophe reserve development of $1.5 million, favorable development of $0.1 million and adverse development of $0.5 million in 2022, 2021 and 2020, respectively. The process of estimating and establishing reserves for catastrophe losses is inherently uncertain and the actual ultimate cost of a claim, net of actual reinsurance recoveries, may vary materially from the estimated amount reserved. The Company’s estimates of direct catastrophe losses are generally based on inspections by claims adjusters and historical loss development experience for areas that have not been inspected or for claims that have not yet been reported. The Company’s estimates of direct catastrophe losses are based on the coverages provided by its insurance policies. The Company’s homeowners and dwelling insurance policies do not provide coverage for losses caused by floods, but generally provide coverage for physical damage caused by wind or wind-driven rain. Accordingly, the Company’s estimates of direct losses for homeowners and dwelling insurance do not include losses caused by flood. Depending on the policy, automobile insurance may provide coverage for losses caused by flood. Estimates of the number and severity of claims ultimately reported are influenced by many variables, including, but not limited to, repair or reconstruction costs and determination of cause of loss that are difficult to quantify and will influence the final amount of claim settlements. All these factors, coupled with the impact of the availability of labor and material on costs, require significant judgment in the reserve setting process. A change in any one or more of these factors is likely to result in an ultimate net claim cost different from the estimated reserve. The Company’s estimates of indirect losses from wind pools and joint underwriting associations are based on a variety of factors, including, but not limited to, actual or estimated assessments provided by or received from such entities, insurance industry estimates of losses, and estimates of the Company’s market share in the assessable states. Actual assessments may differ materially from these estimated amounts. In addition to the reinsurance programs described in Note 23, “Catastrophe Reinsurance,” to the Consolidated Financial Statements, Kemper’s insurance subsidiaries utilize other reinsurance arrangements to limit their maximum loss, provide greater diversification of risk and to minimize exposures on larger risks. The ceding of insurance does not discharge the primary liability of the original insurer. Accordingly, insurance reserve liabilities are reported gross of any estimated recovery from reinsurers in the Consolidated Balance Sheets. Amounts recoverable from reinsurers are estimated in a manner consistent with the insurance reserve liability and are included in Other Receivables in the Consolidated Balance Sheets. Earned Premiums ceded on long-duration and short-duration policies were $42.7 million, $36.1 million and $31.2 million for the years ended December 31, 2022, 2021 and 2020, respectively, of which $32.0 million, $30.3 million and $26.7 million, respectively, was related to catastrophe reinsurance. See Note 23, “Catastrophe Reinsurance,” to the Consolidated Financial Statements for additional information regarding the Company’s catastrophe reinsurance programs. Certain insurance subsidiaries assume business from other insurance companies and involuntary pools. Earned Premiums assumed on long-duration and short-duration policies were $41.4 million, $56.7 million and $73.8 million for the years ended December 31, 2022, 2021 and 2020, respectively. Trinity and Capitol County Mutual Fire Insurance Company (“Capitol”) are parties to a quota share reinsurance agreement whereby Trinity assumes 100% of the business written by Capitol, subject to a cap, for ceded losses for dwelling coverage. Earned Premiums assumed by Trinity from Capitol were $11.9 million, $17.3 million and $18.1 million for the years ended December 31, 2022, 2021 and 2020, respectively. Capitol is a mutual insurance company and, accordingly, is owned by its policyholders. Trinity and Old Reliable Casualty Company (“ORCC”), a subsidiary of Capitol, are parties to a quota share reinsurance agreement whereby Trinity assumes 100% of the business written by ORCC, subject to a cap, for ceded losses for dwelling coverage. Earned Premiums assumed by Trinity from ORCC were $3.2 million, $4.7 million and $4.9 million for the years ended December 31, 2022, 2021 and 2020, respectively. Five employees of the Company serve as directors of Capitol’s five member board of directors. Nine employees of the Company also serve as directors of ORCC’s nine member board of directors. Kemper’s subsidiary, United Insurance, provides claims and administrative services to Capitol and ORCC. In addition, agents appointed by Kemper’s subsidiary, The Reliable Life Insurance Company, and who are employed by United Insurance, are also appointed by Capitol and ORCC to sell property insurance products for the Company’s Life & Health Insurance segment. The Company also provides certain investment services to Capitol and ORCC.

Other Reinsurance

Other Reinsurance	12 Months Ended
	Dec. 31, 2022
Reinsurance Disclosures [Abstract]
Other Reinsurance	CATASTROPHE REINSURANCE Catastrophes and natural disasters are inherent risks of the property and casualty insurance business. These catastrophic events and natural disasters include, without limitation, hurricanes, tornadoes, earthquakes, hailstorms, wildfires, high winds and winter storms. Such events result in insured losses that are, and will continue to be, a material factor in the results of operations and financial position of the Company’s property and casualty insurance companies. Further, because the level of these insured losses occurring in any one year cannot be accurately predicted, these losses may contribute to material year-to-year fluctuations in the results of operations and financial position of these companies. Specific types of catastrophic events are more likely to occur at certain times within the year than others. This factor adds an element of seasonality to property and casualty insurance claims. The Company has adopted the industry-wide catastrophe classifications of storms and other events promulgated by the Insurance Services Office (“ISO”) to track and report losses related to catastrophes. ISO classifies a disaster as a catastrophe when the event causes $25.0 million or more in direct insured losses to property and affects a significant number of policyholders and insurers. ISO-classified catastrophes are assigned a unique serial number recognized throughout the insurance industry. The discussions that follow utilize ISO’s definition of catastrophes. The Company manages its exposure to catastrophes and other natural disasters through a combination of geographical diversification, restrictions on the amount and location of new business production in certain regions, and reinsurance. To limit its exposures to catastrophic events, the Company maintains a catastrophe reinsurance program for the property and casualty insurance companies. In 2022, the property business written through the Life & Health segment was included in the catastrophe reinsurance program. Coverage for the catastrophe reinsurance program is provided in various layers through multiple excess of loss reinsurance contracts and an annual aggregate excess property catastrophe reinsurance contract. Coverage on individual catastrophes provided under the excess of loss reinsurance contracts effective January 1, 2022 to December 31, 2022 is provided in various layers as presented below. DOLLARS IN MILLIONS Catastrophe Losses and Percentage In Excess of Up to Retained $ — $ 50.0 — % 1st Layer of Coverage 50.0 150.0 95.0 2nd Layer of Coverage 150.0 250.0 95.0 3rd Layer of Coverage 250.0 325.0 95.0 4th Layer of Coverage 325.0 350.0 95.0 Coverage on individual catastrophes provided under the excess of loss reinsurance contracts effective January 1, 2021 to December 31, 2021 is provided in various layers as presented below. DOLLARS IN MILLIONS Catastrophe Losses and Percentage In Excess of Up to Retained $ — $ 50.0 — % 1st Layer of Coverage 50.0 150.0 95.0 2nd Layer of Coverage 150.0 250.0 95.0 3rd Layer of Coverage 250.0 275.0 95.0 Coverage on individual catastrophes provided under the excess of loss reinsurance contracts effective January 1, 2020 to December 31, 2020 is provided in various layers as presented below. DOLLARS IN MILLIONS Catastrophe Losses and Percentage In Excess of Up to Retained $ — $ 50.0 — % 1st Layer of Coverage 50.0 150.0 95.0 2nd Layer of Coverage 150.0 250.0 95.0 3rd Layer of Coverage 250.0 275.0 95.0 NOTE 23. CATASTROPHE REINSURANCE (Continued) In the event that the incurred catastrophe losses and LAE covered by the catastrophe reinsurance programs presented in the three preceding tables exceed the retention for that particular layer, each of the programs allow for one reinstatement of such coverage. In such an instance, the Company is required to pay a reinstatement premium to the reinsurers to reinstate the full amount of reinsurance available under such layer. Coverage provided under the 2022 aggregate property catastrophe reinsurance contract is summarized below. Aggregate Catastrophe DOLLARS IN MILLIONS In Excess of Up to Retained $ — $ 65.0 Coverage 65.0 115.0 Coverage provided under the 2021 aggregate property catastrophe reinsurance contract is summarized below. Aggregate Catastrophe DOLLARS IN MILLIONS In Excess of Up to Retained $ — $ 60.0 Coverage 60.0 110.0 The catastrophe reinsurance in 2022, 2021 and 2020 for the property and casualty insurance companies also included reinsurance coverage from the Florida Hurricane Catastrophe Fund (“FHCF”) for hurricane losses in Florida at retentions lower than those described above. The Life & Health Insurance segment also purchases reinsurance from the FHCF for hurricane losses in Florida. Reinsurance premiums for the Company’s catastrophe reinsurance programs and the FHCF Program reduced earned premiums for the years ended December 31, 2022, 2021 and 2020 by the following: DOLLARS IN MILLIONS 2022 2021 2020 Specialty Property & Casualty Insurance $ 8.9 $ 7.0 $ 4.8 Preferred Property & Casualty Insurance 22.5 22.0 20.7 Life & Health Insurance 0.6 1.3 1.2 Total Ceded Catastrophe Reinsurance Premiums $ 32.0 $ 30.3 $ 26.7 The Company did not pay any reinstatement premiums in 2022, 2021, or 2020. Catastrophe losses and LAE (including reserve development), net of reinsurance recoveries, for the years ended December 31, 2022, 2021 and 2020 by business segment are presented below. DOLLARS IN MILLIONS 2022 2021 2020 Specialty Property & Casualty Insurance $ 23.6 $ 16.0 $ 12.5 Preferred Property & Casualty Insurance 48.3 73.5 81.5 Life & Health Insurance 3.3 12.9 12.9 Total Catastrophe Losses and LAE $ 75.2 $ 102.4 $ 106.9 The Company had no material recoveries under its catastrophe reinsurance treaties for the years ended December 31, 2022 and 2021. Total prior year catastrophe loss and LAE reserves, net of reinsurance recoverables, developed favorably by $4.1 million in 2022, favorably by $5.4 million in 2021 and adversely by $0.2 million in 2020. The Specialty Property & Casualty Insurance segment reported adverse catastrophe reserve development of $0.6 million, $0.3 million, and $0.2 million in 2022, 2021 and 2020, respectively. The Preferred Property & Casualty Insurance segment reported favorable catastrophe reserve development of $6.2 million, $5.6 million and $0.5 million in 2022, 2021 and 2020, respectively. The Life & Health Insurance segment NOTE 23. CATASTROPHE REINSURANCE (Continued) reported adverse catastrophe reserve development of $1.5 million, favorable development of $0.1 million and adverse development of $0.5 million in 2022, 2021 and 2020, respectively. The process of estimating and establishing reserves for catastrophe losses is inherently uncertain and the actual ultimate cost of a claim, net of actual reinsurance recoveries, may vary materially from the estimated amount reserved. The Company’s estimates of direct catastrophe losses are generally based on inspections by claims adjusters and historical loss development experience for areas that have not been inspected or for claims that have not yet been reported. The Company’s estimates of direct catastrophe losses are based on the coverages provided by its insurance policies. The Company’s homeowners and dwelling insurance policies do not provide coverage for losses caused by floods, but generally provide coverage for physical damage caused by wind or wind-driven rain. Accordingly, the Company’s estimates of direct losses for homeowners and dwelling insurance do not include losses caused by flood. Depending on the policy, automobile insurance may provide coverage for losses caused by flood. Estimates of the number and severity of claims ultimately reported are influenced by many variables, including, but not limited to, repair or reconstruction costs and determination of cause of loss that are difficult to quantify and will influence the final amount of claim settlements. All these factors, coupled with the impact of the availability of labor and material on costs, require significant judgment in the reserve setting process. A change in any one or more of these factors is likely to result in an ultimate net claim cost different from the estimated reserve. The Company’s estimates of indirect losses from wind pools and joint underwriting associations are based on a variety of factors, including, but not limited to, actual or estimated assessments provided by or received from such entities, insurance industry estimates of losses, and estimates of the Company’s market share in the assessable states. Actual assessments may differ materially from these estimated amounts. In addition to the reinsurance programs described in Note 23, “Catastrophe Reinsurance,” to the Consolidated Financial Statements, Kemper’s insurance subsidiaries utilize other reinsurance arrangements to limit their maximum loss, provide greater diversification of risk and to minimize exposures on larger risks. The ceding of insurance does not discharge the primary liability of the original insurer. Accordingly, insurance reserve liabilities are reported gross of any estimated recovery from reinsurers in the Consolidated Balance Sheets. Amounts recoverable from reinsurers are estimated in a manner consistent with the insurance reserve liability and are included in Other Receivables in the Consolidated Balance Sheets. Earned Premiums ceded on long-duration and short-duration policies were $42.7 million, $36.1 million and $31.2 million for the years ended December 31, 2022, 2021 and 2020, respectively, of which $32.0 million, $30.3 million and $26.7 million, respectively, was related to catastrophe reinsurance. See Note 23, “Catastrophe Reinsurance,” to the Consolidated Financial Statements for additional information regarding the Company’s catastrophe reinsurance programs. Certain insurance subsidiaries assume business from other insurance companies and involuntary pools. Earned Premiums assumed on long-duration and short-duration policies were $41.4 million, $56.7 million and $73.8 million for the years ended December 31, 2022, 2021 and 2020, respectively. Trinity and Capitol County Mutual Fire Insurance Company (“Capitol”) are parties to a quota share reinsurance agreement whereby Trinity assumes 100% of the business written by Capitol, subject to a cap, for ceded losses for dwelling coverage. Earned Premiums assumed by Trinity from Capitol were $11.9 million, $17.3 million and $18.1 million for the years ended December 31, 2022, 2021 and 2020, respectively. Capitol is a mutual insurance company and, accordingly, is owned by its policyholders. Trinity and Old Reliable Casualty Company (“ORCC”), a subsidiary of Capitol, are parties to a quota share reinsurance agreement whereby Trinity assumes 100% of the business written by ORCC, subject to a cap, for ceded losses for dwelling coverage. Earned Premiums assumed by Trinity from ORCC were $3.2 million, $4.7 million and $4.9 million for the years ended December 31, 2022, 2021 and 2020, respectively. Five employees of the Company serve as directors of Capitol’s five member board of directors. Nine employees of the Company also serve as directors of ORCC’s nine member board of directors. Kemper’s subsidiary, United Insurance, provides claims and administrative services to Capitol and ORCC. In addition, agents appointed by Kemper’s subsidiary, The Reliable Life Insurance Company, and who are employed by United Insurance, are also appointed by Capitol and ORCC to sell property insurance products for the Company’s Life & Health Insurance segment. The Company also provides certain investment services to Capitol and ORCC.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES The tax effects of temporary differences that give rise to significant portions of the Company’s Net Deferred Income Tax Assets and Deferred Income Tax Liabilities at December 31, 2022 and 2021 were: DOLLARS IN MILLIONS 2022 2021 Deferred Income Tax Assets: Insurance Reserves $ 33.5 $ 31.9 Unearned Premium Reserves 70.8 78.3 Tax Capitalization of Policy Acquisition Costs 45.9 46.6 Payroll and Employee Benefit Accruals 32.8 36.4 Investments 152.2 — Net Operating Loss and Credit Carryforwards 49.7 3.6 Other 22.6 11.6 Total Deferred Income Tax Assets 407.5 208.4 Deferred Income Tax Liabilities: Investments — 209.1 Deferred Policy Acquisition Costs 131.3 142.4 Life VIF and P&C Customer Relationships 3.7 4.6 Goodwill and Other Intangible Assets Acquired 36.9 38.0 Depreciable Assets 35.7 38.7 Other 10.5 2.6 Total Deferred Income Tax Liabilities 218.1 435.4 Net Deferred Income Tax Assets / (Liabilities) $ 189.4 $ (227.0) Based on the weight of available positive and negative evidence, the deferred tax assets are more likely than not to be realized based on Management’s assessment and a valuation allowance has not been recorded as of December 31, 2022 and 2021 . The expiration of federal net operating loss (“NOL”) and tax credit carryforwards and their related deferred income tax assets at December 31, 2022 is presented below by year of expiration. DOLLARS IN MILLIONS NOL Carry-forwards Deferred Tax Asset Expiring in: 2039 $ 1.4 $ 1.4 2040 1.4 1.4 2041 46.0 46.0 No Expiration 4.3 0.9 Total All Years $ 53.1 $ 49.7 The carryforwards primarily relate to general business and investment tax credits which the Company expects to fully utilize prior to expiration. The reported federal NOL carryforward does not expire but is limited to use against 80% of federal taxable income. There were no Unrecognized Tax Benefits at December 31, 2022, 2021 or 2020. The Company recognizes interest and penalties, if any, related to unrecognized tax benefits in Income Tax Benefit (Expense). There were no liabilities for accrued interest and penalties as of December 31, 2022, 2021 or 2020. The statute of limitations related to Kemper and its eligible subsidiaries’ consolidated Federal income tax returns is closed for all tax years up to and including 2011 as well as 2018. As a result of the Company filing amended federal income tax returns, NOTE 25. INCOME TAXES (Continued) tax years 2012 and 2013 are under limited examination with respect to carryback adjustments associated with the amended returns. The statute of limitations related to tax years 2014, 2015, 2016 and 2017 has been extended to December 31, 2023. Tax years 2019, 2020 and 2021 are subject to a statute of three years from the extended due dates of October 15, 2020, 2021 and 2022, respectively. The expiration of the statute of limitations related to the various state income tax returns that Kemper and its subsidiaries file varies by state. The components of Income Tax Benefit (Expense) from Operations for the years ended December 31, 2022, 2021 and 2020 were: DOLLARS IN MILLIONS 2022 2021 2020 Current Income Tax Benefit (Expense) $ (6.2) $ 122.7 $ (86.6) Deferred Income Tax Benefit (Expense) 94.5 2.1 (13.6) Income Tax Benefit (Expense) $ 88.3 $ 124.8 $ (100.2) Income taxes paid, net of income tax refunds received, were $0.7 million, $38.0 million, and $55.8 million in 2022, 2021, and 2020, respectively. A reconciliation of the Statutory Federal Income Tax Benefit (Expense) and Rate to the Company’s Effective Income Tax Benefit (Expense) and Rate from Operations for the years ended December 31, 2022, 2021 and 2020 is presented below. DOLLARS IN MILLIONS 2022 2021 2020 Amount Rate Amount Rate Amount Rate Statutory Federal Income Tax Benefit (Expense) $ 81.8 21.0 % $ 51.5 21.0 % $ (107.1) 21.0 % Tax-exempt Income and Dividends Received Deduction 5.3 1.3 4.6 1.9 4.0 (0.8) Untaxed Earnings on Company-Owned Life Insurance 8.0 2.1 5.4 2.2 2.7 (0.5) Tax credits 6.5 1.7 66.1 27.0 3.2 (0.6) Stock-Based Compensation (1.3) (0.3) 0.3 0.1 2.2 (0.5) Nondeductible Executive Compensation (1.5) (0.4) (2.7) (1.1) (2.7) 0.5 Expense on Transactions (11.5) (3.0) — — — — Other, Net 1.0 0.3 (0.4) (0.2) (2.5) 0.5 Effective Income Tax Benefit (Expense) $ 88.3 22.7 % $ 124.8 50.9 % $ (100.2) 19.6 % Comprehensive Income Tax Benefit (Expense) included in the Consolidated Financial Statements for the years ended December 31, 2022, 2021 and 2020 was: DOLLARS IN MILLIONS 2022 2021 2020 Income Tax Benefit (Expense): Operations $ 88.3 $ 124.8 $ (100.2) Unrealized Depreciation (Appreciation) on Securities 325.5 (60.1) (78.3) Tax Effects from Postretirement Benefit Plans (4.0) (2.4) (15.3) Tax Effects from Cash Flow Hedge (1.2) 0.1 — Comprehensive Income Tax Benefit (Expense) $ 408.6 $ 62.4 $ (193.8)

Contingencies

Contingencies	12 Months Ended
	Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Contingencies	CONTINGENCIESIn the ordinary course of its businesses, the Company is involved in legal proceedings including lawsuits, arbitrations, regulatory examinations, audits and inquiries. Based on currently available information, the Company does not believe that it is reasonably possible that any of its pending legal proceedings will have a material effect on the Company’s Consolidated Financial Statements and Notes to the Consolidated Financial Statements.

Related Parties

Related Parties	12 Months Ended
	Dec. 31, 2022
Related Party Transactions [Abstract]
Related Parties	RELATED PARTIESAs described in Note 24, “Other Reinsurance,” to the Consolidated Financial Statements, the Company has certain relationships with Capitol, a mutual insurance company that is owned by its policyholders.

Schedule 1 - Investments Other

Schedule 1 - Investments Other Than Investments in Related Parties	9 Months Ended
	Sep. 30, 2022
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Abstract]
Schedule of Investments Other than Investments in Related Parties	KEMPER CORPORATION AND SUBSIDIARIES INVESTMENTS OTHER THAN INVESTMENTS IN RELATED PARTIES DECEMBER 31, 2022 (Dollars in Millions) Amortized Fair Value Amount Fixed Maturities: Bonds and Notes: United States Government and Government Agencies and Authorities $ 612.5 $ 528.0 $ 528.0 States and Political Subdivisions 1,797.6 1,568.9 1,568.9 Foreign Governments 5.0 4.1 4.1 Corporate Securities: Other Bonds and Notes 4,030.3 3,539.4 3,539.4 Redeemable Preferred Stocks 9.0 8.0 8.0 Collateralized Loan Obligations 1,014.7 953.9 953.9 Other Mortgage- and Asset-backed 342.7 292.5 292.5 Total Investments in Fixed Maturities 7,811.8 6,894.8 6,894.8 Equity Securities at Fair Value: Preferred Stocks 39.8 39.8 39.8 Common Stocks 2.1 2.1 2.1 Other Equity Interests 201.3 201.3 201.3 Total Investments in Equity Securities 243.2 243.2 243.2 Equity Method Limited Liability Investments at Cost Plus Cumulative Undistributed Earnings 217.0 XXX.X 217.0 Alternative Energy Partnership Investments 16.3 XXX.X 16.3 Short-term Investments 278.4 XXX.X 278.4 Company-Owned Life Insurance 586.5 XXX.X 586.5 Loans to Policyholders 283.4 XXX.X 283.4 Other Investments 269.9 XXX.X 269.9 Total Investments $ 9,706.5 $ 8,789.5 See Accompanying Report of Independent Registered Public Accounting Firm.

Schedule 2 - Parent Company F_2

Schedule 2 - Parent Company Financial Statements	12 Months Ended
	Dec. 31, 2022
Condensed Financial Information Disclosure [Abstract]
Parent Company Financial Statements	KEMPER CORPORATION PARENT COMPANY BALANCE SHEETS (Dollars in Millions) December 31, 2022 2021 ASSETS Investments in Subsidiaries $ 3,621.6 $ 4,729.1 Fixed Maturities at Fair Value (Amortized Cost: 2022 – $122.5; 2021 - $0.3) 120.0 0.4 Equity Securities at Fair Value (Cost: 2022 - $39.3; 2021 - $106.8) 24.1 107.4 Short-term Investments 67.7 96.9 Cash 66.3 27.7 Other Receivables 5.6 2.3 Current Income Taxes 12.0 — Right-of-Use Assets 12.2 12.8 Other Assets 35.6 18.9 Total Assets $ 3,965.1 $ 4,995.5 LIABILITIES AND SHAREHOLDERS’ EQUITY Senior Notes Payable, 4.350% due 2025 (Fair Value: 2022 – $438.5; 2021 – $481.4) $ 449.3 $ 449.0 Senior Notes Payable, 2.400% due 2030 (Fair Value: 2022 – $310.3; 2021 – $387.8) 396.6 396.2 Senior Notes Payable, 3.800% due 2032 (Fair Value: 2022 - $336.2; 2021 - $0.0) 395.5 — Fixed-Rate Reset Junior Subordinated Debentures, 5.875% due 2062 (Fair Value: 2022 - $110.1; 2021 - $0.0) 145.5 — Current Income Tax Liability — 18.5 Deferred Income Tax Liability 49.1 46.5 Liabilities for Benefit Plans 35.4 42.3 Right-of-Use Liabilities 24.4 25.8 Accrued Expenses and Other Liabilities 26.1 9.5 Total Liabilities 1,521.9 987.8 Shareholders’ Equity: Common Stock 6.4 6.4 Additional Paid-in Capital 1,812.7 1,790.7 Retained Earnings 1,380.1 1,762.5 Accumulated Other Comprehensive (Loss) Income (756.0) 448.1 Total Shareholders’ Equity 2,443.2 4,007.7 Total Liabilities and Shareholders’ Equity $ 3,965.1 $ 4,995.5 See Accompanying Report of Independent Registered Public Accounting Firm. KEMPER CORPORATION PARENT COMPANY STATEMENTS OF (LOSS) INCOME (Dollars in Millions) For the Year Ended December 31, 2022 2021 2020 Net Investment Income $ 16.6 $ 3.4 $ 1.4 (Loss) Income from Change in Fair Value of Equity Securities (14.8) 10.0 4.3 Net Realized Investment Gains 3.0 10.6 0.1 Impairment Losses (0.2) — — Other Income 1.1 — — Total Revenues 5.7 24.0 5.8 Interest Expense 52.6 32.0 24.2 Pension Settlement Expense — — 64.1 Other Operating Expenses (Benefits) 6.6 5.9 (3.6) Total Operating Expenses 59.2 37.9 84.7 Loss before Income Taxes and Equity in Net (Loss) Income of Subsidiaries (53.5) (13.9) (78.9) Income Tax Benefit (Expense) 14.0 (0.6) 13.4 Loss before Equity in Net Loss of Subsidiaries (39.5) (14.5) (65.5) Equity in Net (Loss) Income of Subsidiaries (261.7) (106.0) 475.4 Net (Loss) Income $ (301.2) $ (120.5) $ 409.9 See Accompanying Report of Independent Registered Public Accounting Firm. KEMPER CORPORATION PARENT COMPANY STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (Dollars in Millions) For the Year Ended December 31, 2022 2021 2020 Net (Loss) Income $ (301.2) $ (120.5) $ 409.9 Other Comprehensive (Loss) Income: Changes in Net Unrealized (Losses) Gains on Investment Securities: Having No Credit Losses Recognized in Consolidated Statements of (Loss) Income: Securities Held by Subsidiaries (1,535.7) (230.4) 378.7 Securities Held by Parent (2.6) — 8.0 Having Credit Losses Recognized in Consolidated Statements of (Loss) Income: Securities Held by Subsidiaries 1.9 (2.0) (2.6) Reclassification Adjustment for Amounts Included in Net (Loss) Income: Securities Held by Subsidiaries (12.8) (43.5) (16.6) Securities Held by Parent — (10.6) (0.1) Unrecognized Postretirement Benefit Costs Arising During the Year: Securities Held by Subsidiaries 1.1 0.6 — Securities Held by Parent 18.2 (9.5) 3.6 Reclassification Adjustments for Amounts Included in Net (Loss) Income: Pension Settlement Cost Recognized — — 64.1 Amortization of Unrecognized Postretirement Benefit Costs (0.4) 0.1 2.5 Gains on Cash Flow Hedge 5.9 0.5 0.4 Other Comprehensive (Loss) Income before Income Taxes (1,524.4) (294.8) 438.0 Income Tax Benefit (Expense): Changes in Net Unrealized (Losses) Gains on Investment Securities: Having No Credit Losses Recognized in Consolidated Statements of (Loss) Income: Securities Held by Subsidiaries 322.7 48.4 (80.6) Securities Held by Parent 0.5 — (1.7) Having Credit Losses Recognized in Consolidated Statements of (Loss) Income: Securities Held by Subsidiaries (0.4) 0.4 0.5 Reclassification Adjustment for Amounts Included in Net (Loss) Income: Securities Held by Subsidiaries 2.7 9.1 3.5 Securities Held by Parent — 2.2 — Unrecognized Postretirement Benefit Costs Arising During the Year: Securities Held by Subsidiaries (0.2) (0.1) — Securities Held by Parent (3.9) 2.5 (1.3) Reclassification Adjustments for Amounts Included in Net (Loss) Income: Pension Settlement Cost Recognized — — (13.5) Amortization of Unrecognized Postretirement Benefit Costs 0.1 — (0.5) Changes in Gain on Cash Flow Hedges (1.2) (0.1) — Income Tax Benefit (Expense) 320.3 62.4 (93.6) Other Comprehensive (Loss) Income (1,204.1) (232.4) 344.4 Total Comprehensive (Loss) Income $ (1,505.3) $ (352.9) $ 754.3 See Accompanying Report of Independent Registered Public Accounting Firm. KEMPER CORPORATION PARENT COMPANY STATEMENTS OF CASH FLOWS (Dollars in Millions) For the Year Ended December 31, 2022 2021 2020 Operating Activities: Net (Loss) Income $ (301.2) $ (120.5) $ 409.9 Adjustment Required to Reconcile Net (Loss) Income to Net Cash (Used in) Provided by Operations: Equity in Net Loss (Income) of Subsidiaries 261.7 106.0 (475.4) Cash Dividends from Subsidiaries 25.3 170.3 216.2 Net Realized Investment Gains (3.0) (10.6) (0.1) Settlement Costs Related to Defined Benefit Pension Plan — — 64.1 Impairment Losses 0.2 — — Loss (Income) from Change in Fair Value of Equity and Convertible Securities 14.8 (10.0) (4.3) Other, Net (48.9) (35.3) 52.2 Net Cash (Used in) Provided by Operating Activities (51.1) 99.9 262.6 Investing Activities: Capital Contributed to Subsidiaries (537.8) (36.5) (62.0) Proceeds from Sales, Calls and Maturities of Fixed Maturities 0.1 181.3 2.0 Proceeds from the Sales or Paydowns of Investments: Equity Securities 71.9 28.5 2.2 Purchases of Investments: Fixed Maturities (40.3) — — Equity Securities (5.6) (48.7) (21.0) Net Sales (Purchases) of Short-term Investments 138.9 411.3 (415.7) Acquisition of Business — (370.9) — Other (3.1) — — Net Cash (Used in) Provided by Investing Activities (375.9) 165.0 (494.5) Financing Activities: Notes Payable Proceeds: Proceeds from Issuance of 3.800% Senior Notes due February 23, 2032 396.3 — — Issuance Fees from Issuance of 3.800% Senior Notes due February 23, 2032 (1.2) — — Proceeds from Issuance of 5.875% Fixed-Rate Reset Junior Subordinated Debentures due 2062 145.6 — — Issuance Fees from Issuance of 5.875% Fixed-Rate Reset Junior Subordinated Debentures due 2062 (0.9) — — Proceeds from Issuance of 2.400% Senior Notes due September 30, 2030 — — 396.8 Issuance Fees from Issuance of 2.400% Senior Notes due September 30, 2030 — — (1.2) Repayments of Long-term Debt — (50.0) — Proceeds from Shares Issued under Employee Stock Purchase Plan 4.9 5.4 4.4 Common Stock Repurchases — (161.7) (110.4) Dividends and Dividend Equivalents Paid (79.7) (80.6) (78.9) Other 0.6 3.7 5.4 Net Cash Provided by (Used in) Financing Activities 465.6 (283.2) 216.1 Increase (Decrease) in Cash 38.6 (18.3) (15.8) Cash, Beginning of Year 27.7 46.0 61.8 Cash, End of Year $ 66.3 $ 27.7 $ 46.0 See Accompanying Report of Independent Registered Public Accounting Firm. KEMPER CORPORATION FINANCIAL INFORMATION OF KEMPER CORPORATION NOTES TO FINANCIAL INFORMATION (Dollars in Millions) NOTE 1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES The financial information of Kemper Corporation (“Kemper” or the “Parent Company”) should be read in conjunction with the Consolidated Financial Statements and Notes thereto included in Item 8 of this Form 10-K. Kemper’s subsidiaries are accounted for using the equity method of accounting. Equity in net (loss) income of these subsidiaries is presented on the Statements of Operations as Equity in Net (Loss) Income of Subsidiaries. NOTE 2. GUARANTEES On November 30, 2018 Kemper executed a guarantee to fully and unconditionally guarantee the payment and performance obligations of the 5.000% Senior Notes due September 19, 2022 of Infinity Property and Casualty Corporation, a wholly owned subsidiary of Kemper. On February 23, 2022, Kemper issued a notice of redemption for the entire $275.0 million aggregate principal outstanding of the 2022 Senior Notes at a redemption price equal to 100% of their principal, plus accrued and unpaid interest on the redemption date. On March 25, 2022, Kemper completed the redemption, and the 2022 Senior Notes were repaid in full. The Company recognized a Loss from Early Extinguishment of Debt of $3.7 million in the first quarter of 2022 which is reflected in the Consolidated Statements of (Loss) Income. The Company used the proceeds received from Kemper’s 2032 Senior Notes offering to repay the 2022 Senior Notes. See “3.800% Senior Notes Due 2032” in the Debt disclosure, Note 21 for additional information regarding the debt issuance. On July 1, 2022, Kemper executed an indefinite agreement with its subsidiary, Kemper Bermuda Ltd, that provides financial guarantees of up to $300.0 million in contributed capital to maintain its minimum Enhanced Capital Requirement (“ECR”) as required by the Bermuda Monetary Authority as a Class C insurer. As of December 31, 2022, Kemper had contributed $5.0 million under this agreement. NOTE 3. SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION Kemper received $300.1 million and $189.0 million in non-cash dividends from subsidiaries in 2022 and 2021, respectively. Kemper made non-cash capital contributions of $156.3 million and $103.3 million to subsidiaries in 2022 and 2021, respectively. NOTE 4. LEASES Kemper leases certain office space for its current and former corporate headquarters under non-cancelable operating leases. The following table presents operating lease Right-of-Use (“ROU”) assets and lease liabilities at December 31, 2022 and 2021. DOLLARS IN MILLIONS 2022 2021 Operating Lease Right-of-Use Assets $ 12.2 $ 12.8 Operating Lease Liabilities 24.4 25.8 Supplemental cash flow information related to Kemper’s operating leases for the year-ended December 31, 2022 and December 31, 2021 respectively are presented follows. DOLLARS IN MILLIONS 2022 2021 Operating Cash Flows from Operating Leases (Fixed Payments) $ 2.4 $ 2.2 Operating Cash Flows from Operating Leases (Liability Reduction) 1.4 1.1 Right-of-Use Assets Obtained in Exchange for New Operating Lease Liabilities — — NOTE 4. LEASES (Continued) Significant judgments and assumptions for determining lease asset and liability as December 31, 2022 and December 31, 2021 respectively are presented below. DOLLARS IN MILLIONS 2022 2021 Weighted-average Remaining Lease Term - Operating Leases 11.0 years 11.9 years Weighted-average Discount Rate - Operating Leases 4.0 % 4.0 % Kemper’s leases do not provide an implicit rate. Accordingly, Kemper uses its incremental borrowing rate based on the information available at the commencement date in determining the present value of its lease payments. Future minimum operating lease payments at December 31, 2022 were: DOLLARS IN MILLIONS Operating 2023 $ 2.4 2024 2.5 2025 2.6 2026 2.6 2027 2.7 2028 and Thereafter 17.7 Total Future Payments $ 30.5 Less Discount 6.1 Present Value of Minimum Lease Payments $ 24.4 NOTE 5. DEBT 4.350% Senior Notes Due 2025 Kemper has $450.0 million aggregate principal of 4.350% senior notes due February 15, 2025 (the “2025 Senior Notes”). Kemper initially issued $250.0 million of the notes in February of 2015 and issued an additional $200.0 million of the notes in June of 2017. The additional notes are fungible with the initial notes issued in 2015, and together are treated as part of a single series for all purposes under the indenture governing the 2025 Senior Notes. The 2025 Senior Notes are unsecured and may be redeemed in whole at any time or in part from time to time at Kemper’s option at specified redemption prices. 2.400% Senior Notes Due 2030 Kemper has $400.0 million aggregate principal of 2.400% senior notes due September 30, 2030 (the “2030 Senior Notes”). The net proceeds of issuance were $395.8 million, net of discount and transaction costs for an effective yield of 2.52%. The 2030 Senior Notes are unsecured and may be redeemed in whole at any time or in part from time to time, at Kemper’s option, at specified redemption prices. 3.800% Senior Notes Due 2032 On February 15, 2022, Kemper offered and sold $400.0 million aggregate principal of 3.800% senior notes due February 23, 2032 (the “2032 Senior Notes”). The net proceeds of issuance were $395.1 million, net of discount and transaction costs for an effective yield of 3.950%. The 2032 Senior Notes are unsecured and may be redeemed in whole at any time or in part from time to time, at Kemper’s option, at specified redemption prices. In anticipation of the issuance of the 2032 Senior Notes and for risk management purposes, the Company entered into a derivative transaction to hedge the risk of changes in the debt cash flows attributable to changes in the benchmark U.S. Treasury interest rate during the period leading up to the debt issuance (“Treasury Lock”). The effective portion of the gain on the derivative instrument upon discontinuance was $5.9 million before taxes, and is reported as a component of Accumulated Other Comprehensive (Loss) Income. Beginning with the issuance of the 2032 Senior Notes described in the preceding paragraph, such gain is being amortized into earnings and reported in Interest and Other Expenses in the same periods that the hedged items affect earnings. Amortization, reported in Interest and Other Expenses, was $0.5 million for the year ended December 31, 2022. The Company expects to reclassify $0.5 million of net gain on derivative instruments from AOCI to earnings for the twelve months ended December 31, 2023 as interest expense on the debt is recognized. NOTE 5. DEBT (Continued) 5.875% Fixed-Rate Reset Junior Subordinated Debentures Due 2062 On March 10, 2022, Kemper issued $150.0 million aggregate principal amount of 5.875% Fixed-Rate Reset Junior Subordinated Debentures due March 15, 2062 (the “2062 Junior Debentures”). The net proceeds from issuance were $144.7 million, net of discount and transaction costs. The 2062 Junior Debentures will bear interest from and including the date of original issue to, but excluding, March 15, 2027 (the “First Reset Date”) at the fixed rate of 5.875% per annum. The interest rate on the First Reset Date, and subsequent Reset Dates, will be equal to the Five-Year Treasury Rate as of the most recent Reset Date plus 4.140% to be reset on each Reset Date. Interest is due quarterly in arrears beginning on June 15, 2022. The Company has the option to defer interest payments for one or more optional deferral periods of up to five

Schedule 3 - Supplementary Insu

Schedule 3 - Supplementary Insurance Information	12 Months Ended
	Dec. 31, 2022
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Abstract]
Supplementary Insurance Information	KEMPER CORPORATION AND SUBSIDIARIES SUPPLEMENTARY INSURANCE INFORMATION (Dollars in Millions) Year Ended December 31, At December 31 Earned Premiums Premiums Other Net Insurance Amortization Other Deferred Insurance Unearned 2022 Specialty Property & Casualty Insurance $ 4,046.4 $ 3,934.4 $ 6.0 $ 140.7 $ 3,578.2 $ 569.8 $ 232.1 $ 192.6 $ 2,321.1 $ 1,431.5 Preferred Property & Casualty Insurance 595.5 527.1 — 49.7 493.4 93.5 90.0 38.1 419.1 264.0 Life & Health Insurance (1) 624.4 N/A (0.6) 216.5 432.6 42.0 300.9 394.9 3,556.3 8.9 Other — N/A 3.8 15.7 0.2 — (127.7) — 14.4 — Total $ 5,266.3 N/A $ 9.2 $ 422.6 $ 4,504.4 $ 705.3 $ 495.3 $ 625.6 $ 6,310.9 $ 1,704.4 2021 Specialty Property & Casualty Insurance $ 3,948.5 $ 4,057.3 $ 4.1 $ 152.5 $ 3,593.7 $ 546.7 $ 227.8 $ 219.0 $ 2,319.7 $ 1,545.9 Preferred Property & Casualty Insurance 651.7 642.0 — 68.6 537.4 103.8 102.6 49.2 433.2 331.6 Life & Health Insurance (1) 653.5 N/A (1.3) 202.7 469.7 33.8 325.1 409.4 3,544.5 21.2 Other — N/A 2.0 3.5 — — (121.7) — 16.2 — Total $ 5,253.7 N/A $ 4.8 $ 427.3 $ 4,600.8 $ 684.3 $ 533.8 $ 677.6 $ 6,313.6 $ 1,898.7 2020 Specialty Property & Casualty Insurance $ 3,335.3 $ 3,435.5 $ 1.8 $ 114.1 $ 2,378.4 $ 497.5 $ 154.4 Preferred Property & Casualty Insurance 688.2 653.0 0.1 37.7 503.1 111.2 109.9 Life & Health Insurance (1) 648.7 N/A 0.6 198.8 442.0 33.1 301.8 Other — N/A 92.1 (2.4) 0.1 — (107.4) Total $ 4,672.2 N/A $ 94.6 $ 348.2 $ 3,323.6 $ 641.8 $ 458.7 (1) The Company’s Life & Health Insurance employee-agents also market certain property and casualty insurance products under common management. Accordingly, the Company includes the results of these property and casualty insurance products in its Life & Health Insurance segment. See Accompanying Report of Independent Registered Public Accounting Firm.

Schedule 4 - Reinsurance Schedu

Schedule 4 - Reinsurance Schedule	12 Months Ended
	Dec. 31, 2022
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Abstract]
Reinsurance Schedule	KEMPER CORPORATION REINSURANCE SCHEDULE (Dollars in Millions) Gross Ceded to Assumed Net Percentage Year Ended December 31, 2022 Life Insurance in Force $ 19,885.1 $ 354.8 $ 137.1 $ 19,667.4 0.7 % Premiums: Life Insurance $ 408.7 $ 3.6 $ 0.6 $ 405.7 0.1 % Accident and Health Insurance 167.9 1.1 1.4 168.2 0.8 Property and Liability Insurance 4,706.1 38.0 24.3 4,692.4 0.5 Total Premiums $ 5,282.7 $ 42.7 $ 26.3 $ 5,266.3 0.5 % Year Ended December 31, 2021 Life Insurance in Force $ 20,287.7 $ 372.3 $ 144.5 $ 20,059.9 0.7 % Premiums: Life Insurance $ 401.9 $ 0.9 $ 0.7 $ 401.7 0.2 % Accident and Health Insurance 185.8 0.3 4.4 189.9 2.3 Property and Liability Insurance 4,667.4 34.9 29.6 4,662.1 0.6 Total Premiums $ 5,255.1 $ 36.1 $ 34.7 $ 5,253.7 0.7 % Year Ended December 31, 2020 Life Insurance in Force $ 19,706.2 $ 387.7 $ 152.3 $ 19,470.8 0.8 % Premiums: Life Insurance $ 386.0 $ 1.1 $ 0.8 $ 385.7 0.2 % Accident and Health Insurance 195.5 1.6 5.4 199.3 2.7 Property and Liability Insurance 4,071.1 28.5 44.6 4,087.2 1.1 Total Premiums $ 4,652.6 $ 31.2 $ 50.8 $ 4,672.2 1.1 % See Accompanying Report of Independent Registered Public Accounting Firm.

Summary of Accounting Policie_2

Summary of Accounting Policies and Accounting Changes (Policies)	12 Months Ended
	Dec. 31, 2022
Accounting Policies [Abstract]
Investments	Investments Investments in Fixed Maturities include bonds, notes and redeemable preferred stocks. Investments in Fixed Maturities are classified as available for sale and reported at fair value. Net Investment Income, including amortization of purchased premiums and accretion of market discounts, on Investments in Fixed Maturities is recognized as interest over the period that it is earned using the effective yield method. Unrealized appreciation or depreciation, net of applicable deferred income taxes, on fixed maturities classified as available for sale is reported in Accumulated Other Comprehensive (Loss) Income (“AOCI”) included in Shareholders’ Equity. Equity investments include common stocks, non-redeemable preferred stocks, exchange traded funds, money market mutual funds and limited liability companies, and investment partnerships in which the Company’s interests are deemed minor. Equity investments with readily determinable fair values are recorded as Equity Securities at Fair Value on the Consolidated Balance Sheets. The changes in the fair value of such equity securities are reported in the Consolidated Statements of (Loss) Income. Dividend income on investments in common and non-redeemable preferred stocks is recognized on the ex-dividend date. Equity Method Limited Liability Investments include investments in limited liability investment companies and limited partnerships in which the Company’s interests are not deemed minor and are accounted for under the equity method of accounting whereby changes in net asset values (“NAV”) are recorded in Net Investment Income in the Consolidated Statements of (Loss) Income. Certain partnerships for which results are not available on a timely basis are reported on a lag. Investments in Alternative Energy Partnerships are measured using the HLBV method of equity method accounting whereby changes in the estimated amount the Company would receive upon the liquidation and distribution of the equity investment’s net assets are recorded in Net Investment Income. Tax credits allocated from investments in Alternative Energy Partnerships are recognized using the flow-through method, where credits are recorded as a reduction to tax expense in the period earned. Differences in the basis calculated under tax law and GAAP are recognized using the income statement approach, where basis differences are recorded to Income Tax Benefit (Expense) immediately, rather than deferred as adjustments to the carrying value of the asset. Certain partnerships for which results are not available on a timely basis are reported on a lag. Short-term Investments include certificates of deposit and other fixed maturities that mature within one year from the date of purchase, U.S. Treasury bills, money market mutual funds and overnight interest-bearing accounts. Short-term Investments are reported at cost, which approximates fair value. Company-Owned Life Insurance (“COLI”) is reported at cash surrender value with changes due to cost of insurance and investment experience reported in Net Investment Income in the Consolidated Statements of (Loss) Income. Loans to Policyholders are carried at unpaid principal balance. Other Investments primarily include Equity Securities at Modified Cost, Convertible Securities at Fair Value, Real Estate and Mortgage Loans. Equity Securities at Modified Cost do not have readily determinable fair values and are held at cost, less impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or similar investment of the same issuer. Investments in Convertible Securities include fixed maturities with equity conversion features. The Company has elected the fair value option method of accounting for investments in Convertible Securities and records Convertible Securities at fair value on the Consolidated Balance Sheets. Real Estate is carried at cost, net of accumulated depreciation. Real Estate is depreciated over the estimated useful life of the asset using the straight-line method of depreciation. Real Estate is evaluated for impairment when events or circumstances indicate the carrying value may not be recoverable. An impairment loss on real estate is recognized when the carrying value exceeds the sum of undiscounted projected future cash flows as well as the fair value, or, in the case of a property classified as held for sale, when the carrying value exceeds the fair value, net of costs to sell. Mortgage Loans are carried at amortized cost, net of a reserve for expected credit losses as applicable. Investments in Fixed Maturities - Impairment Losses For fixed maturity investments that the Company intends to sell or for which it is more likely than not that the Company will be required to sell before an anticipated recovery of value, the full amount of the impairment is reported in Impairment Losses. The Company writes down the investment’s amortized cost to its fair value, and will not adjust for any subsequent recoveries. NOTE 2. SUMMARY OF ACCOUNTING POLICIES AND ACCOUNTING CHANGES (Continued) For fixed maturity investments that the Company does not intend to sell or for which it is more likely than not that the Company will not be required to sell before an anticipated recovery of value, the Company will evaluate whether a decline in fair value below the amortized cost basis has occurred from a credit loss or other factors (non-credit related). Considerations in the credit loss assessment include (1) extent to which the fair value has been less than amortized cost, (2) conditions related to the security, an industry, or a geographic area, (3) payment structure of the investment and the likelihood of the issuer's ability to make contractual cash flows, (4) defaults or other collectability concerns related to the issuer, (5) changes in the ratings assigned by a rating agency and (6) other credit enhancements that affect the investment’s expected performance. Any increase or decrease in the expected allowance for credit losses related to investments is recognized in Impairment Losses. The expected allowance for credit losses is limited by the amount that the fair value is less than the amortized cost basis and is adjusted for any additional expected credit losses or subsequent recoveries. The amortized cost basis of the investment is not adjusted for the expected allowance for credit loss. The impairment related to other factors (non-credit related) is reported in Other Comprehensive (Loss) Income, net of applicable taxes. The Company reports accrued investment income separately for available-for-sale fixed maturity securities and has elected not to measure an allowance for credit losses on accrued investment income. Accrued investment income is written off through Impairment Losses at the time the issuer of the bond defaults or is expected to default on interest payments.
Fair Value Measurements	Fair Value Measurements The Company uses a hierarchical framework which prioritizes and ranks the market observability of inputs used in fair value measurements. Market price observability is affected by a number of factors, including the type of asset or liability and the characteristics specific to the asset or liability being measured. Assets and liabilities with readily available, active, quoted market prices or for which fair value can be measured from actively quoted prices generally are deemed to have a higher degree of market price observability and a lesser degree of judgment used in measuring fair value. The Company classifies the inputs used to measure fair value into one of three levels as follows: • Level 1 — Quoted prices in an active market for identical assets or liabilities; • Level 2 — Observable inputs other than Level 1, quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets and liabilities in markets that are not active, and model-derived prices whose inputs are observable or whose significant value drivers are observable; and • Level 3 — Significant unobservable inputs for the asset or liability being measured.
Deferred Policy Acquisition Costs	Deferred Policy Acquisition Costs Costs directly associated with the successful acquisition of business, principally commissions and certain premium taxes and policy issuance costs, are deferred. Costs deferred on property and casualty insurance contracts and short-duration health insurance contracts are amortized over the period in which premiums are earned. Costs deferred on traditional life insurance products and other long-duration insurance contracts are primarily amortized over the anticipated premium-paying period of the related policies in proportion to the ratio of the annual premiums to the total premiums anticipated, which is estimated using the same assumptions used in calculating policy reserves.
Goodwill	Goodwill The cost of an acquired entity over the fair value of net assets acquired is reported as Goodwill. Goodwill is not amortized, but rather is tested for recoverability annually or when certain triggering events require testing.
Insurance Reserves	Insurance Reserves Reserves for losses and LAE on property and casualty insurance coverage and health insurance coverage represent the estimated claim cost and loss adjustment expense necessary to cover the ultimate net cost of investigating and settling all losses incurred and unpaid at the end of any given accounting period. Such estimates are based on individual case estimates for NOTE 2. SUMMARY OF ACCOUNTING POLICIES AND ACCOUNTING CHANGES (Continued) reported claims and estimates for incurred but not reported (“IBNR”) losses, including expected development on reported claims. These estimates are adjusted in the aggregate for ultimate loss expectations based on historical experience patterns and current economic trends, with any change in the estimated ultimate liabilities being reported in the Consolidated Statements of (Loss) Income in the period of change. Changes in such estimates may be material.
Policyholder Contract Liabilities	Policyholder Obligations Policyholder Obligations include Federal Home Loan Bank (“FHLB”) funding agreements used for spread lending purposes and universal life-type policyholder contracts and are stated at account balances. Receivables from Policyholders - Allowance for Expected Credit Losses The allowance for credit losses is a valuation account that is deducted from the receivables from policyholders based on the net amount expected to be collected on the insurance contract. Receivables from policyholders are charged off against the allowance when management believes the uncollectability of the receivable is confirmed. Expected recoveries do not exceed the aggregate of amounts previously charged-off and expected to be charged-off. Management estimates the allowance using relevant available information, from internal and external sources, related to past events, current conditions, and reasonable and supportable forecasts. Historical credit loss experience on the receivables from policyholders provide the basis for the estimation of expected credit losses. Adjustments to historical loss information are made for differences in current environmental conditions, primarily unemployment rates that could impact an insured’s ability to pay premiums.
Other Receivables	Other ReceivablesOther Receivables primarily include reinsurance recoverables, accrued investment income, ceded reinsurance reserves and receivables from limited liability investments and investments in partnerships. Reinsurance Recoverables were $39.6 million and $41.9 million at December 31, 2022 and 2021, respectively. Accrued Investment Income was $94.3 million and $79.6 million at December 31, 2022 and 2021, respectively. Ceded Reinsurance Reserves were $41.2 million and $42.1 million at December 31, 2022 and 2021, respectively. Receivables from limited liability investments and investments in partnerships were $35.2 million and $2.6 million at December 31, 2022 and 2021, respectively.
Other Assets	Other Assets Other Assets primarily include property and equipment, internal use software, right-of-use assets, insurance licenses acquired in business combinations, the value of other intangible assets acquired and prepaid expenses. Property and equipment is depreciated over the useful lives of the assets, generally using the straight-line or double declining balance methods of depreciation depending on the asset involved. Internal use software is amortized over the useful life of the asset using the straight-line method of amortization and is evaluated for recoverability upon identification of impairment indications. Insurance licenses acquired in business combinations and other indefinite life intangibles are not amortized, but rather tested periodically for recoverability. NOTE 2. SUMMARY OF ACCOUNTING POLICIES AND ACCOUNTING CHANGES (Continued) The Company accounts for the value of business acquired (“VOBA”) based on actuarial estimates of the present value of future cash flows embedded in insurance in force as of an acquisition date. VOBA was $15.4 million and $19.0 million at December 31, 2022 and 2021, respectively. VOBA is amortized over the expected profit emergence period of the policies in force as of the acquisition date. The Company evaluates VOBA assets for recoverability annually. The Company accounts for the future profits embedded in customer relationships (“Customer Relationships”) acquired based on the present value of estimated future cash flows from such relationships. Customer Relationships were $2.7 million and $5.7 million at December 31, 2022 and 2021, respectively, and are amortized on a straight-line basis over the estimated useful life of the relationship. Customer Relationships are tested for recoverability using undiscounted projections of future cash flows and are written down to estimated fair value if the carrying value exceeds the sum of such projections of undiscounted cash flows. The Company accounts for the present value of the future profits embedded in broker or agent relationships acquired (“Agent Relationships”) based on the present value of estimated future cash flows from such acquired relationships or, using the cost recovery method, which estimates the ultimate cost to build a comparable distribution network. Agent Relationships were $50.6 million and $58.0 million at December 31, 2022 and 2021, respectively, and are amortized on a straight-line basis over the estimated useful life of the relationship. Agent Relationships are tested for recoverability using undiscounted projections of future cash flows and are written down to estimated fair value if the carrying value exceeds the sum of such projections of undiscounted cash flows.
Accrued Expenses and Other Liabilities	Accrued Expenses and Other Liabilities Accrued Expenses and Other Liabilities primarily include drafts payable, accrued salaries and commissions, pension benefits, postretirement medical benefits, lease liability and accrued taxes, licenses and fees.
Recognition of Earned Premiums and Related Expenses	Recognition of Earned Premiums and Related Expenses Property and casualty insurance and short-duration health insurance premiums are deferred when written and recognized and earned ratably over the periods to which the premiums relate. Unearned Premiums represent the portion of the premiums written related to the unexpired portion of policies in force which has been deferred and is reported as a liability. The Company performs a premium deficiency analysis typically at a segment level, namely Specialty Property & Casualty Insurance and Preferred Property & Casualty Insurance, which is consistent with the manner in which the Company acquires and services policies and measures profitability. Anticipated investment income is included in this analysis. A premium deficiency is recognized when the sum of expected claim costs, claim adjustment expenses, unamortized deferred policy acquisition costs and maintenance costs exceeds the related unearned premiums by first reducing related deferred policy acquisition costs to an amount, but not below zero, at which the premium deficiency would not exist. If a premium deficiency remains after first reducing deferred policy acquisition costs, a premium deficiency reserve is established and reported as a liability in the Consolidated Financial Statements. Traditional life insurance premiums are recognized as revenue when due. Policyholders’ benefits are associated with related premiums to result in recognition of profits over the periods for which the benefits are provided using the net level premium method. Policyholders’ Benefits and Incurred Losses and Loss Adjustment Expenses include provisions for future policy benefits under life and certain accident and health insurance contracts and provisions for reported claims, estimates for IBNR claims and loss adjustment expenses. Benefit payments in excess of policy account balances are expensed.
Reinsurance	Reinsurance In the normal course of business, Kemper’s insurance subsidiaries reinsure certain risks above certain retention levels with other insurance enterprises. These reinsurance agreements do not relieve Kemper’s insurance subsidiaries of their legal obligations to the policyholder. Amounts recoverable from reinsurers are included in Other Receivables. Gains related to long-duration reinsurance contracts are deferred and amortized over the life of the underlying reinsured policies. Losses related to long-duration reinsurance contracts are recognized immediately. Any gain or loss associated with reinsurance agreements for which Kemper’s insurance subsidiaries have been legally relieved of their obligations to the policyholder is recognized in the period of relief.
Change in Accounting and Adoption of New Accounting Standards	Adoption of New Accounting Guidance Guidance Adopted in 2022 The Company has adopted all recently issued accounting pronouncements with effective dates prior to January 1, 2023. There were no adoptions of such accounting pronouncements during the year ended December 31, 2022 that had a material impact on the Company’s Consolidated Financial Statements and Notes to the Consolidated Financial Statements. Guidance Not Yet Adopted

Income from Continuing Operat_2

Income from Continuing Operations Per Unrestricted Share (Tables)	12 Months Ended
	Dec. 31, 2022
Earnings Per Share [Abstract]
Schedule of Calculation of Numerator and Denominator in Earnings Per Share	A reconciliation of the numerator and denominator used in the calculation of Basic Net (Loss) Income Per Unrestricted Share and Diluted Net (Loss) Income Per Unrestricted Share for the years ended December 31, 2022, 2021 and 2020 is presented below. 2022 2021 2020 DOLLARS IN MILLIONS Net (Loss) Income $ (301.2) $ (120.5) $ 409.9 Less: Net Income Attributed to Participating Awards — — 0.4 Net (Loss) Income Attributed to Unrestricted Shares (301.2) (120.5) 409.5 Dilutive Effect on Income of Equity-based Compensation Equivalent Shares — — — Diluted Net (Loss) Income Attributed to Unrestricted Shares $ (301.2) $ (120.5) $ 409.5 SHARES IN THOUSANDS Weighted-average Unrestricted Shares Outstanding 63,825.5 64,264.4 65,636.1 Equity-based Compensation Equivalent Shares — — 1,093.7 Weighted-average Unrestricted Shares and Equivalent Shares Outstanding Assuming Dilution 63,825.5 64,264.4 66,729.8 PER UNRESTRICTED SHARE IN WHOLE DOLLARS Basic Net (Loss) Income Per Unrestricted Share $ (4.72) $ (1.87) $ 6.24 Diluted Net (Loss) Income Per Unrestricted Share $ (4.72) $ (1.87) $ 6.14
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	The number of shares of Kemper common stock that were excluded from the calculations of Equity-based Compensation Equivalent Shares and Weighted-average Unrestricted Shares and Equivalent Shares Outstanding Assuming Dilution for the years ended December 31, 2022, 2021 and 2020, because the effect of inclusion would be anti-dilutive, is presented below. SHARES IN THOUSANDS 2022 2021 2020 Equity-based Compensation Equivalent Shares 2,410.7 2,180.1 874.5 Weighted-average Unrestricted Shares and Equivalent Shares Outstanding Assuming Dilution 2,410.7 2,180.1 874.5

Acquisition of Business (Tables

Acquisition of Business (Tables)	12 Months Ended
	Dec. 31, 2022
Business Combinations [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	Based on the Company’s final allocation of the purchase price, the fair value of the assets acquired and liabilities assumed were: (Dollars in Millions) Fixed Maturities at Fair Value $ 151.2 Equity Securities at Fair Value 82.4 Short-term Investments at Cost which Approximates Fair Value 100.1 Cash 54.3 Receivables from Policyholders 148.9 Other Receivables 2.0 Goodwill 198.0 Current Income Tax Assets 0.3 Other Assets 81.4 Property and Casualty Insurance Reserves (211.1) Unearned Premiums (177.8) Deferred Income Tax Liabilities (7.8) Accrued Expenses and Other Liabilities (51.0) Total Purchase Price $ 370.9
Schedule of Intangible Assets and Goodwill	Identifiable definite and indefinite lived intangible assets acquired consisted of the following: (Dollars in Millions) Definite Life Intangibles Value of Business Acquired $ 42.9 Customer Relationships 4.8 Agent Relationships 7.2 Internal-Use Software 6.5 Trade Names 1.8 Indefinite Life Intangible Assets Insurance Licenses $ 2.5
Business Acquisition, Pro Forma Information	The following unaudited pro forma information presents the Company’s results of operations as if the acquisition of AAC occurred on January 1, 2021. The adjustments to arrive at the pro forma information below included adjustments for the lost investment income on the cash used to fund the acquisition, amortization of the acquired intangible assets and the exclusion of certain acquisition related costs considered to be non-recurring in nature. Year Ended (Dollars in millions) Dec 31, Dec 31, Total Revenues $ 5,576.8 $ 5,884.2 Total Expenses 5,968.8 6,109.5 Loss from Continuing Operations before Income Taxes (392.0) (225.3) Net Loss $ (303.1) $ (105.1)

Dispositions (Tables)

Dispositions (Tables)	12 Months Ended
	Dec. 31, 2022
Discontinued Operations and Disposal Groups [Abstract]
Disposal Groups, Including Discontinued Operations	The following table summarizes the assets and liabilities included in the sale on December 1, 2022: (Dollars in millions) Dec 1, Assets: Investments: Fixed Maturities at Fair Value (Amortized Cost: $43.3) $ 36.7 Short-term Investments at Cost which Approximates Fair Value 0.7 Loans to Policyholders 0.7 Total Investments 38.1 Cash 81.0 Receivables from Policyholders 2.6 Other Receivables 1.6 Deferred Policy Acquisition Costs 38.7 Goodwill 0.3 Other Assets 3.1 Investment in Subsidiaries 0.2 Total Assets $ 165.6 Liabilities: Insurance Reserves: Health Insurance Reserves $ 48.2 Unearned Premiums 10.8 Deferred Income Tax Liabilities 1.8 Accrued Expenses and Other Liabilities 13.8 Total Liabilities $ 74.6

Business Segments (Tables)

Business Segments (Tables)	12 Months Ended
	Dec. 31, 2022
Segment Reporting [Abstract]
Segment Assets	Segment Assets at December 31, 2022 and 2021 were: DOLLARS IN MILLIONS 2022 2021 Specialty Property & Casualty Insurance $ 5,492.3 $ 5,936.5 Preferred Property & Casualty Insurance 1,175.3 1,230.1 Life & Health Insurance 4,850.8 6,062.6 Corporate and Other, Net 1,845.6 1,687.3 Total Assets $ 13,364.0 $ 14,916.5
Earned Premiums by Product Line	Earned Premiums by product line for the years ended December 31, 2022, 2021 and 2020 were: DOLLARS IN MILLIONS 2022 2021 2020 Specialty Property & Casualty Insurance: Personal Automobile $ 3,496.7 $ 3,533.7 $ 3,031.3 Commercial Automobile 549.7 414.8 304.0 Preferred Property & Casualty Insurance: Preferred Automobile 363.7 410.5 431.7 Homeowners 200.0 207.3 220.7 Other Personal Lines 31.8 33.9 35.8 Life & Health Insurance: Life 405.7 401.7 385.7 Accident & Health 168.2 189.9 199.3 Property 50.5 61.9 63.7 Total Earned Premiums $ 5,266.3 $ 5,253.7 $ 4,672.2
Segment Revenues	Segment Revenues, including a reconciliation to Total Revenues, for the years ended December 31, 2022, 2021 and 2020 were: DOLLARS IN MILLIONS 2022 2021 2020 Segment Revenues: Specialty Property & Casualty Insurance: Earned Premiums $ 4,046.4 $ 3,948.5 $ 3,335.3 Net Investment Income 140.7 152.5 114.1 Change in Value of Alternative Energy Partnership Investments (9.9) (29.0) — Other Income 6.0 4.1 1.8 Total Specialty Property & Casualty Insurance 4,183.2 4,076.1 3,451.2 Preferred Property & Casualty Insurance: Earned Premiums 595.5 651.7 688.2 Net Investment Income 49.7 68.6 37.7 Change in Value of Alternative Energy Partnership Investments (4.7) (16.3) — Other Income — — 0.1 Total Preferred Property & Casualty Insurance 640.5 704.0 726.0 Life & Health Insurance: Earned Premiums 624.4 653.5 648.7 Net Investment Income 216.5 202.7 198.8 Change in Value of Alternative Energy Partnership Investments (5.3) (15.8) — Other (Loss) Income (0.6) (1.3) 0.6 Total Life & Health Insurance 835.0 839.1 848.1 Total Segment Revenues 5,658.7 5,619.2 5,025.3 (Loss) Income from Change in Fair Value of Equity and Convertible Securities (79.9) 114.6 72.1 Net Realized Investment Gains 4.3 64.8 38.1 Net Impairment Losses Recognized in Earnings (25.8) (11.0) (19.5) Other 19.5 5.4 89.7 Total Revenues $ 5,576.8 $ 5,793.0 $ 5,205.7
Segment Operating Profit	Segment Operating (Loss) Income, including a reconciliation to (Loss) Income before Income Taxes, for the years ended December 31, 2022, 2021 and 2020 was: DOLLARS IN MILLIONS 2022 2021 2020 Segment Operating (Loss) Income: Specialty Property & Casualty Insurance $ (196.9) $ (292.1) $ 420.9 Preferred Property & Casualty Insurance (36.4) (39.8) 1.8 Life & Health Insurance 59.5 10.5 71.2 Total Segment Operating (Loss) Income (173.8) (321.4) 493.9 Corporate and Other Operating (Loss) Income From: Partial Satisfaction of Judgment — — 89.4 Other (47.7) (48.4) (36.5) Corporate and Other Operating (Loss) Income (47.7) (48.4) 52.9 Adjusted Consolidated Operating (Loss) Income (221.5) (369.8) 546.8 (Loss) Income from Change in Fair Value of Equity and Convertible Securities (79.9) 114.6 72.1 Net Realized Investment Gains 4.3 64.8 38.1 Impairment Losses (25.8) (11.0) (19.5) Acquisition and Disposition Related Transaction, Integration, Restructuring and Other Costs (62.9) (43.9) (63.3) Pension Obligation Settlement Costs — — (64.1) Loss from Early Extinguishment of Debt (3.7) — — (Loss) Income before Income Taxes $ (389.5) $ (245.3) $ 510.1
Segment Net Income (Loss)	Segment Net Operating (Loss) Income, including a reconciliation to Net (Loss) Income, for the years ended December 31, 2022, 2021 and 2020 was: DOLLARS IN MILLIONS 2022 2021 2020 Segment Net Operating (Loss) Income: Specialty Property & Casualty Insurance $ (147.4) $ (196.1) $ 337.9 Preferred Property & Casualty Insurance (25.9) (12.5) 3.5 Life & Health Insurance 54.2 28.2 60.0 Total Segment Net Operating (Loss) Income (119.1) (180.4) 401.4 Corporate and Other Net Operating (Loss) Income From: Partial Satisfaction of Judgment — — 70.6 Other (37.8) (38.4) (33.2) Total Corporate and Other Net Operating (Loss) Income (37.8) (38.4) 37.4 Adjusted Consolidated Net Operating (Loss) Income (156.9) (218.8) 438.8 Net (Loss) Income From: Change in Fair Value of Equity and Convertible Securities (63.1) 90.5 57.0 Net Realized Investment Gains 3.4 51.2 30.1 Impairment Losses (20.4) (8.7) (15.4) Acquisition and Disposition Related Transaction, Integration, Restructuring and Other Costs (61.3) (34.7) (50.0) Pension Obligation Settlement Costs — — (50.6) Loss from Early Extinguishment of Debt (2.9) — — Net (Loss) Income $ (301.2) $ (120.5) $ 409.9

Property and Casualty Insuran_2

Property and Casualty Insurance Reserves (Tables)	12 Months Ended
	Dec. 31, 2022
Liability for Future Policy Benefits and Unpaid Claims and Claims Adjustment Expense [Abstract]
Short-duration Insurance Contracts, Claims Development	NOTE 7. PROPERTY AND CASUALTY INSURANCE RESERVES (Continued) Specialty Personal Automobile Insurance—Liability 1 DOLLARS IN MILLIONS, EXCEPT CUMULATIVE INCURRED CLAIMS As of December 31, 2022 Incurred Losses and Allocated LAE, Net of Reinsurance Total of IBNR Liabilities Plus Expected Development on Reported Claims Cumulative Number of Reported Claims Accident Year 2018 2019 2020 2021 2022 2018 $ 1,324.0 $ 1,310.5 $ 1,307.8 $ 1,314.5 $ 1,316.1 $ 12.7 509,081 2019 1,461.5 1,494.7 1,506.1 1,508.3 27.2 548,271 2020 1,401.2 1,406.4 1,407.8 52.5 476,238 2021 1,856.9 1,824.7 152.4 583,773 2022 1,765.9 552.2 440,324 Total 7,822.8 Cumulative Paid Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31, Accident Year 2018 2019 2020 2021 2022 2018 $ 541.3 $ 1,050.8 $ 1,211.8 $ 1,265.5 $ 1,292.6 2019 567.3 1,200.7 1,382.0 1,452.3 2020 555.2 1,107.6 1,287.8 2021 657.1 1,429.4 2022 738.2 Total 6,200.3 Outstanding Loss and Allocated LAE Reserves on Accident Years before 2018, Net of Reinsurance 20.0 Loss and Allocated LAE Reserves, Net of Reinsurance $ 1,642.5 1 Tables retrospectively include Infinity and AAC’s historical incurred and paid accident year claim information for all periods presented. NOTE 7. PROPERTY AND CASUALTY INSURANCE RESERVES (Continued) Specialty Personal Automobile Insurance—Physical Damage 1 DOLLARS IN MILLIONS, EXCEPT CUMULATIVE INCURRED CLAIMS As of December 31, 2022 Incurred Losses and Allocated LAE, Net of Reinsurance Total of IBNR Liabilities Plus Expected Development on Reported Claims Cumulative Number of Reported Claims Accident Year 2018 2019 2020 2021 2022 2018 $ 558.9 $ 548.6 $ 548.0 $ 547.8 $ 548.1 $ (0.2) 309,625 2019 624.3 630.3 629.6 629.7 (9.7) 324,516 2020 650.5 659.5 659.5 (1.3) 296,417 2021 958.0 967.5 (12.2) 361,716 2022 993.5 25.8 297,398 Total 3,798.3 Cumulative Paid Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31, Accident Year 2018 2019 2020 2021 2022 2018 $ 509.4 $ 553.1 $ 549.0 $ 548.3 $ 548.2 2019 570.8 634.8 630.6 630.0 2020 585.5 663.8 659.7 2021 890.1 977.5 2022 921.9 Total 3,737.3 Outstanding Loss and Allocated LAE Reserves on Accident Years before 2018, Net of Reinsurance 1.7 Loss and Allocated LAE Reserves, Net of Reinsurance $ 62.7 1 Tables retrospectively include Infinity and AAC’s historical incurred and paid accident year claim information for all periods presented. NOTE 7. PROPERTY AND CASUALTY INSURANCE RESERVES (Continued) Commercial Automobile Insurance—Liability 1 DOLLARS IN MILLIONS, EXCEPT CUMULATIVE INCURRED CLAIMS As of December 31, 2022 Incurred Losses and Allocated LAE, Net of Reinsurance Total of IBNR Liabilities Plus Expected Development on Reported Claims Cumulative Number of Reported Claims Accident Year 2018 2019 2020 2021 2022 2018 $ 123.2 $ 116.5 $ 113.0 $ 110.9 $ 111.2 $ 3.9 20,213 2019 128.4 126.1 126.6 128.1 7.5 19,624 2020 140.5 152.0 154.0 15.3 19,581 2021 225.6 228.6 42.2 27,143 2022 305.1 153.0 28,674 Total 927.0 Cumulative Paid Losses and Allocated LAE, Net of Reinsurance and Indemnification For the Years Ended December 31, Accident Year 2018 2019 2020 2021 2022 2018 $ 36.8 $ 68.8 $ 88.1 $ 98.1 $ 104.3 2019 32.4 75.7 99.5 113.1 2020 37.0 87.6 111.7 2021 50.8 128.0 2022 72.2 Total 529.3 Outstanding Loss and Allocated LAE Reserves on Accident Years before 2018, Net of Reinsurance 16.6 Loss and Allocated LAE Reserves, Net of Reinsurance $ 414.3 1 Tables retrospectively include Infinity’s historical incurred and paid accident year claim information for all periods presented. NOTE 7. PROPERTY AND CASUALTY INSURANCE RESERVES (Continued) Commercial Automobile Insurance—Physical Damage 1 DOLLARS IN MILLIONS, EXCEPT CUMULATIVE INCURRED CLAIMS As of December 31, 2022 Incurred Losses and Allocated LAE, Net of Reinsurance Total of IBNR Liabilities Plus Expected Development on Reported Claims Cumulative Number of Reported Claims Accident Year 2018 2019 2020 2021 2022 2018 $ 23.6 $ 23.5 $ 23.6 $ 23.6 $ 23.6 $ 0.1 9,570 2019 26.0 27.1 26.9 26.8 (0.5) 9,311 2020 31.9 32.2 32.1 0.1 11,039 2021 52.4 51.9 (0.1) 17,687 2022 74.5 2.0 20,280 Total 208.9 Cumulative Paid Losses and Allocated LAE, Net of Reinsurance and Indemnification For the Years Ended December 31, Accident Year 2018 2019 2020 2021 2022 2018 $ 21.7 $ 23.6 $ 23.6 $ 23.6 $ 23.6 2019 23.0 26.9 26.8 26.8 2020 26.2 31.9 32.0 2021 43.3 51.9 2022 66.8 Total 201.1 Outstanding Loss and Allocated LAE Reserves on Accident Years before 2018, Net of Reinsurance 0.5 Loss and Allocated LAE Reserves, Net of Reinsurance $ 8.3 1 Tables retrospectively include Infinity’s historical incurred and paid accident year claim information for all periods presented. NOTE 7. PROPERTY AND CASUALTY INSURANCE RESERVES (Continued) Preferred Personal Automobile Insurance—Liability DOLLARS IN MILLIONS, EXCEPT CUMULATIVE INCURRED CLAIMS As of December 31, 2022 Incurred Losses and Allocated LAE, Net of Reinsurance Total of IBNR Liabilities Plus Expected Development on Reported Claims Cumulative Number of Reported Claims Accident Year 2018 2019 2020 2021 2022 2018 $ 157.6 $ 156.3 $ 161.7 $ 163.4 $ 163.4 $ 1.1 31,701 2019 172.2 195.5 200.0 201.8 2.7 34,586 2020 148.9 153.6 151.8 7.0 24,746 2021 176.9 179.8 21.9 27,449 2022 165.0 56.1 22,833 Total 861.8 Cumulative Paid Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31, Accident Year 2018 2019 2020 2021 2022 2018 $ 55.5 $ 107.6 $ 132.7 $ 147.4 $ 155.8 2019 62.7 127.9 160.8 181.1 2020 44.4 92.8 117.7 2021 50.3 106.1 2022 55.0 Total 615.7 Outstanding Loss and Allocated LAE Reserves on Accident Years before 2018, Net of Reinsurance 8.7 Loss and Allocated LAE Reserves, Net of Reinsurance $ 254.8 NOTE 7. PROPERTY AND CASUALTY INSURANCE RESERVES (Continued) Preferred Personal Automobile Insurance—Physical Damage DOLLARS IN MILLIONS, EXCEPT CUMULATIVE INCURRED CLAIMS As of December 31, 2022 Incurred Losses and Allocated LAE, Net of Reinsurance Total of IBNR Liabilities Plus Expected Development on Reported Claims Cumulative Number of Reported Claims Accident Year 2018 2019 2020 2021 2022 2018 $ 113.9 $ 111.0 $ 110.4 $ 110.4 $ 110.3 $ 0.1 61,733 2019 126.4 125.8 125.9 125.8 0.4 67,101 2020 96.1 98.0 97.9 0.3 47,639 2021 118.5 117.9 (0.2) 53,626 2022 110.9 (2.7) 45,908 Total 562.8 Cumulative Paid Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31, Accident Year 2018 2019 2020 2021 2022 2018 $ 107.2 $ 111.4 $ 110.4 $ 110.3 $ 110.2 2019 120.7 126.5 125.6 125.4 2020 90.9 98.4 97.6 2021 113.1 118.1 2022 108.7 Total 560.0 Outstanding Loss and Allocated LAE Reserves on Accident Years before 2018, Net of Reinsurance — Loss and Allocated LAE Reserves, Net of Reinsurance $ 2.8 NOTE 7. PROPERTY AND CASUALTY INSURANCE RESERVES (Continued) Homeowners Insurance DOLLARS IN MILLIONS, EXCEPT CUMULATIVE INCURRED CLAIMS As of December 31, 2022 Incurred Losses and Allocated LAE, Net of Reinsurance Total of IBNR Liabilities Plus Expected Development on Reported Claims Cumulative Number of Reported Claims Accident Year 2018 2019 2020 2021 2022 2018 $ 185.9 $ 183.0 $ 183.6 $ 185.3 $ 185.0 $ 4.5 16,065 2019 162.9 161.8 163.1 162.8 2.1 14,558 2020 157.0 149.8 144.6 3.0 14,036 2021 149.9 149.8 7.8 13,590 2022 142.7 10.0 10,304 Total 784.9 Cumulative Paid Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31, Accident Year 2018 2019 2020 2021 2022 2018 $ 127.4 $ 180.2 $ 180.0 $ 183.1 $ 183.6 2019 111.1 150.4 157.7 159.5 2020 94.6 130.8 137.4 2021 100.6 132.6 2022 97.0 Total 710.1 Outstanding Loss and Allocated LAE Reserves on Accident Years before 2018, Net of Reinsurance 3.5 Loss and Allocated LAE Reserves, Net of Reinsurance $ 78.3
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability	The following table reconciles the net incurred and paid claims development tables presented above to the Company's liability for Property and Casualty Insurance Reserves included in the Consolidated Balance Sheets at December 31, 2022. DOLLARS IN MILLIONS 2022 Property and Casualty Insurance Reserves, Net of Reinsurance: Specialty Personal Automobile Insurance—Liability $ 1,642.5 Specialty Personal Automobile Insurance—Physical Damage 62.7 Commercial Automobile Insurance—Liability 414.3 Commercial Automobile Insurance—Physical Damage 8.3 Preferred Personal Automobile Insurance—Liability 254.8 Preferred Personal Automobile Insurance—Physical Damage 2.8 Homeowners Insurance 78.3 Other 44.1 Total $ 2,507.8 Reinsurance Recoverables on Unpaid Losses and Allocated LAE: Specialty Personal Automobile Insurance—Liability $ 1.5 Specialty Personal Automobile Insurance—Physical Damage — Commercial Automobile Insurance—Liability 19.2 Commercial Automobile Insurance—Physical Damage — Preferred Personal Automobile Insurance—Liability 10.1 Preferred Personal Automobile Insurance—Physical Damage — Homeowners Insurance 4.9 Other 3.9 Total 39.6 Unallocated LAE 209.5 Property and Casualty Insurance Reserves, Gross of Reinsurance $ 2,756.9
Short-duration Insurance Contracts, Schedule of Historical Claims Duration	The following is supplementary information about average historical claims duration as of December 31, 2022. Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance (Unaudited) Years 1 2 3 4 5 Specialty Personal Automobile Insurance—Liability 39.2 % 79.1 % 91.7 % 96.2 % 98.2 % Specialty Personal Automobile Insurance—Physical Damage 91.4 100.9 100.1 100.0 100.0 Commercial Automobile Insurance—Liability 25.7 58.5 76.5 88.3 93.8 Commercial Automobile Insurance—Physical Damage 86.4 99.8 99.8 99.9 99.9 Preferred Personal Automobile Insurance—Liability 31.1 62.3 79.5 90.0 95.3 Preferred Personal Automobile Insurance—Physical Damage 96.0 100.5 99.8 99.8 99.9 Homeowners Insurance 67.5 92.2 96.4 98.5 99.3
Liability for Unpaid Claims Adjustment Expense by Expense Type	Property and Casualty Insurance Reserve activity for the years ended December 31, 2022, 2021 and 2020 was: DOLLARS IN MILLIONS 2022 2021 2020 Property and Casualty Insurance Reserves: Gross of Reinsurance at Beginning of Year $ 2,772.7 $ 1,982.5 $ 1,969.8 Less Reinsurance Recoverables at Beginning of Year 41.9 50.1 65.6 Property and Casualty Insurance Reserves, Net of Reinsurance at Beginning of Year 2,730.8 1,932.4 1,904.2 Property and Casualty Insurance Reserves Acquired, Net of Reinsurance — 211.1 — Incurred Losses and LAE related to: Current Year 4,103.3 4,052.7 2,873.6 Prior Years (14.6) 106.7 36.4 Total Incurred Losses and LAE 4,088.7 4,159.4 2,910.0 Paid Losses and LAE related to: Current Year: 2,460.5 2,303.4 1,679.1 Prior Years 1,641.7 1,268.7 1,202.7 Total Paid Losses and LAE 4,102.2 3,572.1 2,881.8 Property and Casualty Insurance Reserves, Net of Reinsurance at End of Year 2,717.3 2,730.8 1,932.4 Plus Reinsurance Recoverables at End of Year 39.6 41.9 50.1 Property and Casualty Insurance Reserves, Gross of Reinsurance at End of Year $ 2,756.9 $ 2,772.7 $ 1,982.5
Premium Receivable, Allowance for Credit Loss	The following table presents receivables from policyholders, net of the allowance for expected credit losses including a rollforward of changes in the allowance for expected credit losses for the year ended December 31, 2022. (Dollars in Millions) Receivables from Policyholders, Net of Allowance for Expected Credit Losses Allowance for Expected Credit Losses Balance at Beginning of Year $ 1,418.7 $ 13.6 Provision for Expected Credit Losses 48.0 Write-offs of Uncollectible Receivables from Policyholders (48.5) Balance at End of Year $ 1,286.6 $ 13.1 The following table presents receivables from policyholders, net of the allowance for expected credit losses including a rollforward of changes in the allowance for expected credit losses for the year ended December 31, 2021. (Dollars in Millions) Receivables from Policyholders, Net of Allowance for Expected Credit Losses Allowance for Expected Credit Losses Balance at Beginning of Year $ 1,194.5 $ 20.9 Provision for Expected Credit Losses 50.5 Write-offs of Uncollectible Receivables from Policyholders (57.8) Balance at End of Year $ 1,418.7 $ 13.6

Insurance Expenses (Tables)

Insurance Expenses (Tables)	12 Months Ended
	Dec. 31, 2022
Insurance Expenses [Abstract]
Schedule of Insurance Expenses	Insurance Expenses for the years ended December 31, 2022, 2021 and 2020 were: DOLLARS IN MILLIONS 2022 2021 2020 Commissions $ 724.8 $ 817.6 $ 745.8 General Expenses 358.4 339.5 307.4 Premium Tax Expense 99.5 104.3 94.2 Total Costs Incurred 1,182.7 1,261.4 1,147.4 Policy Acquisition Costs: Deferred (691.5) (772.6) (693.4) Amortized 705.3 684.3 641.8 Net Policy Acquisition Costs Amortized (Deferred) 13.8 (88.3) (51.6) Amortization of VOBA 4.1 45.0 4.7 Insurance Expenses $ 1,200.6 $ 1,218.1 $ 1,100.5

Investments (Tables)

Investments (Tables)	12 Months Ended
	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Schedule of Unrealized Loss on Investments	An aging of unrealized losses on the Company’s Investments in Fixed Maturities at December 31, 2022 is presented below. DOLLARS IN MILLIONS Less Than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized Fixed Maturities: U.S. Government and Government Agencies and Authorities $ 337.3 $ (49.3) $ 126.5 $ (36.5) $ 463.8 $ (85.8) States and Political Subdivisions 854.7 (140.6) 276.8 (97.7) 1,131.5 (238.3) Foreign Governments 0.1 — 2.6 (0.9) 2.7 (0.9) Corporate Securities: Bonds and Notes 2,730.6 (373.9) 424.4 (125.8) 3,155.0 (499.7) Redeemable Preferred Stocks 7.7 (1.0) — — 7.7 (1.0) Collateralized Loan Obligations 568.2 (34.2) 373.9 (26.6) 942.1 (60.8) Other Mortgage- and Asset-backed 205.4 (28.9) 79.5 (21.4) 284.9 (50.3) Total Fixed Maturities $ 4,704.0 $ (627.9) $ 1,283.7 $ (308.9) $ 5,987.7 $ (936.8) An aging of unrealized losses on the Company’s Investments in Fixed Maturities at December 31, 2021 is presented below. DOLLARS IN MILLIONS Less Than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized Fixed Maturities: U.S. Government and Government Agencies and Authorities $ 168.7 $ (1.8) $ 1.2 $ (0.1) $ 169.9 $ (1.9) States and Political Subdivisions 385.0 (6.9) 1.5 (0.1) 386.5 (7.0) Foreign Governments 2.2 (0.6) 2.6 (0.6) 4.8 (1.2) Corporate Securities: Bonds and Notes 596.8 (13.1) 49.3 (2.9) 646.1 (16.0) Redeemable Preferred Stocks 0.1 — — — 0.1 — Collateralized Loan Obligations 250.9 (2.6) 192.6 (2.2) 443.5 (4.8) Other Mortgage- and Asset-backed 100.1 (1.8) — — 100.1 (1.8) Total Fixed Maturities $ 1,503.8 $ (26.8) $ 247.2 $ (5.9) $ 1,751.0 $ (32.7)
Other than Temporary Impairment, Credit Losses Recognized in Earnings	The components of Impairment Losses reported in the Consolidated Statements of (Loss) Income for the years ended December 31, 2022, 2021 and 2020 were: DOLLARS IN MILLIONS 2022 2021 2020 Fixed Maturities $ (25.8) $ (6.4) $ (16.7) Equity Securities — (4.2) (2.8) Real Estate — (0.4) — Net Impairment Losses Recognized in Earnings $ (25.8) $ (11.0) $ (19.5)
Schedule of Other Investments	The carrying values of the Company’s Other Investments at December 31, 2022 and 2021 were: DOLLARS IN MILLIONS 2022 2021 Equity Securities at Modified Cost $ 38.4 $ 32.3 Convertible Securities at Fair Value 43.3 46.4 Real Estate at Depreciated Cost 93.6 94.0 Mortgage Loans 91.1 96.8 Other 3.5 0.5 Total $ 269.9 $ 270.0
Investments in Fixed Maturities
Debt Securities, Available-for-sale [Line Items]
Schedule of Available-for-sale Securities Reconciliation	The amortized cost and estimated fair values of the Company’s Investments in Fixed Maturities at December 31, 2022 were: DOLLARS IN MILLIONS Amortized Gross Unrealized Allowance for Expected Credit Losses Fair Value Gains Losses U.S. Government and Government Agencies and Authorities $ 612.5 $ 1.3 $ (85.8) $ — $ 528.0 States and Political Subdivisions 1,797.6 10.3 (238.3) (0.7) 1,568.9 Foreign Governments 5.0 — (0.9) — 4.1 Corporate Securities: Bonds and Notes 4,030.3 17.7 (499.7) (8.9) 3,539.4 Redeemable Preferred Stocks 9.0 — (1.0) — 8.0 Collateralized Loan Obligations 1,014.7 — (60.8) — 953.9 Other Mortgage- and Asset-backed 342.7 0.1 (50.3) — 292.5 Investments in Fixed Maturities $ 7,811.8 $ 29.4 $ (936.8) $ (9.6) $ 6,894.8 The amortized cost and estimated fair values of the Company’s Investments in Fixed Maturities at December 31, 2021 were: Amortized Gross Unrealized Allowance for Expected Credit Losses Fair Value DOLLARS IN MILLIONS Gains Losses U.S. Government and Government Agencies and Authorities $ 610.1 $ 29.2 $ (1.9) $ — $ 637.4 States and Political Subdivisions 1,752.5 144.6 (7.0) — 1,890.1 Foreign Governments 6.7 — (1.2) — 5.5 Corporate Securities: Bonds and Notes 3,929.0 481.4 (16.0) (7.5) 4,386.9 Redeemable Preferred Stocks 7.0 0.4 — 7.4 Collateralized Loan Obligations 756.0 0.9 (4.8) — 752.1 Other Mortgage- and Asset-backed 296.9 12.4 (1.8) — 307.5 Investments in Fixed Maturities $ 7,358.2 $ 668.9 $ (32.7) $ (7.5) $ 7,986.9
Investments Classified by Contractual Maturity Date	The amortized cost and estimated fair values of the Company’s Investments in Fixed Maturities at December 31, 2022 by contractual maturity were: DOLLARS IN MILLIONS Amortized Cost Fair Value Due in One Year or Less $ 151.1 $ 146.9 Due after One Year to Five Years 991.8 952.3 Due after Five Years to Ten Years 1,231.1 1,071.9 Due after Ten Years 3,598.8 3,070.3 Mortgage- and Asset-backed Securities Not Due at a Single Maturity Date 1,839.0 1,653.4 Investments in Fixed Maturities $ 7,811.8 $ 6,894.8

Income from Investments (Tables

Income from Investments (Tables)	12 Months Ended
	Dec. 31, 2022
Investment Income, Net [Abstract]
Net Investment Income	Net Investment Income for the years ended December 31, 2022, 2021 and 2020 was: DOLLARS IN MILLIONS 2022 2021 2020 Investment Income: Interest on Fixed Income Securities $ 300.1 $ 277.7 $ 289.8 Dividends on Equity Securities Excluding Alternative Investments 6.3 15.9 15.4 Alternative Investments: Equity Method Limited Liability Investments 31.3 56.7 4.9 Limited Liability Investments Included in Equity Securities 42.1 46.9 22.1 Total Alternative Investments 73.4 103.6 27.0 Short-term Investments 3.7 1.0 5.5 Loans to Policyholders 21.5 21.7 22.1 Real Estate 10.1 9.3 9.6 Company-Owned Life Insurance 37.9 25.7 12.9 Other 7.7 6.7 0.3 Total Investment Income 460.7 461.6 382.6 Investment Expenses: Real Estate 7.9 9.7 8.8 Other Investment Expenses 30.2 24.6 25.6 Total Investment Expenses 38.1 34.3 34.4 Net Investment Income $ 422.6 $ 427.3 $ 348.2 Other Receivables includes accrued investment income of $94.3 million and $79.6 million at December 31, 2022 and 2021, respectively.
Realized Gain (Loss) on Investments	The components of Net Realized Gains on Sales of Investments for the years ended December 31, 2022, 2021 and 2020 were: DOLLARS IN MILLIONS 2022 2021 2020 Fixed Maturities: Gains on Sales $ 31.6 $ 63.4 $ 40.6 Losses on Sales (31.9) (2.1) (7.9) Gains on Hedging Activity 1.7 — — Equity Securities: Gains on Sales 9.7 4.1 5.9 Losses on Sales (6.8) (0.7) (1.9) Equity Method Limited Liability Investments: Gains on Sales — 0.4 — Losses on Sales — — (0.4) Real Estate: Gains on Sales — 0.1 1.8 Losses on Sales — (0.4) — Net Realized Investment Gains $ 4.3 $ 64.8 $ 38.1 Gross Gains on Sales $ 41.3 $ 68.0 $ 48.3 Gross Losses on Sales (38.7) (3.2) (10.2) Gains on Hedging Activity 1.7 — — Net Realized Investment Gains $ 4.3 $ 64.8 $ 38.1
Other than Temporary Impairment, Credit Losses Recognized in Earnings	The components of Impairment Losses reported in the Consolidated Statements of (Loss) Income for the years ended December 31, 2022, 2021 and 2020 were: DOLLARS IN MILLIONS 2022 2021 2020 Fixed Maturities $ (25.8) $ (6.4) $ (16.7) Equity Securities — (4.2) (2.8) Real Estate — (0.4) — Net Impairment Losses Recognized in Earnings $ (25.8) $ (11.0) $ (19.5)

Derivatives (Tables)

Derivatives (Tables)	12 Months Ended
	Dec. 31, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location	The following table presents the derivative instruments, primary underlying risk exposure, gross notional amount, and estimated fair value of the Company’s derivatives: Dec 31, 2022 Dec 31, 2021 (Dollars in Millions) Estimated Fair Value Estimated Fair Value Derivative Instrument Primary Underlying Risk Exposure Gross Notional Amount Assets Liabilities Gross Notional Amount Assets Liabilities Derivatives Designated as Hedging Instruments: Interest Swap Lock Interest Rate Risk $ 5.0 $ — $ 0.4 $ — $ — $ — Derivatives Not Designated or Not Qualifying as Hedging Instruments: Reverse Treasury Lock Interest Rate Risk $ 100.0 $ 1.7 $ — $ — $ — $ —
Derivative Instruments, Gain (Loss)	The below table reflects the amounts of Losses deferred into AOCI and subsequently reclassified into Net (Loss) Income through Net Realized Investment Gains for derivatives qualifying as cash flow hedges for the years ended December 31, 2022 and 2021: Year Ended (Dollars in Millions) Dec 31, 2022 Dec 31, 2021 Amount of Losses Deferred in AOCI $ (0.4) $ — Amount of Losses Reclassified into Income — — Net Comprehensive Loss from Cash Flow Hedges $ (0.4) $ —
Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location	The below table reflects the effects of changes in the designated hedged asset’s impacts on AOCI and Net Realized Investment Gains as well as the derivative instruments designated as fair value hedges impact on Net Realized Investment Gains for the years ended December 31, 2022 and 2021: Year Ended (Dollars in Millions) Dec 31, 2022 Dec 31, 2021 Increase in Derivative Instruments Designated as Fair Value Hedges $ 1.1 $ — Decrease in Fair Value of Hedged Assets Reclassified from AOCI (1.1) — Net Gain from Hedging Activity $ — $ —
Derivatives Not Designated as Hedging Instruments	The below table reflects the amounts recognized in Net Realized Investment Gains for the years ended December 31, 2022 and 2021: Year Ended (Dollars in Millions) Dec 31, 2022 Dec 31, 2021 Net Realized Investment Gains $ 1.7 $ —

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2022
Fair Value Disclosures [Abstract]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis	The valuation of assets and liabilities measured at fair value in the Company’s Consolidated Balance Sheets at December 31, 2022 is summarized below. The Company has no material liabilities that are measured and reported at fair value. DOLLARS IN MILLIONS Fair Value Measurements Total Fair Value Quoted Prices Significant Significant Measured at Net Asset Value Assets: Fixed Maturities: U.S. Government and Government Agencies and Authorities $ 103.6 $ 424.4 $ — $ — $ 528.0 States and Political Subdivisions — 1,568.9 — — 1,568.9 Foreign Governments — 4.1 — — 4.1 Corporate Securities: Bonds and Notes — 3,323.4 216.0 — 3,539.4 Redeemable Preferred Stocks — 1.2 6.8 — 8.0 Collateralized Loan Obligations — 953.9 — — 953.9 Other Mortgage- and Asset-backed — 287.4 5.1 — 292.5 Total Investments in Fixed Maturities 103.6 6,563.3 227.9 — 6,894.8 Equity Securities at Fair Value: Preferred Stocks: Finance, Insurance and Real Estate — 29.0 — — 29.0 Other Industries — 9.2 1.6 — 10.8 Common Stocks: Finance, Insurance and Real Estate 0.9 — — — 0.9 Other Industries 0.3 0.4 0.5 — 1.2 Other Equity Interests: Exchange Traded Funds 12.2 — — — 12.2 Limited Liability Companies and Limited Partnerships — — — 189.1 189.1 Total Investments in Equity Securities at Fair Value 13.4 38.6 2.1 189.1 243.2 Convertible Securities at Fair Value — 43.3 — — 43.3 Other Liabilities: Derivative Instruments Not Designated as Hedges — 1.7 — — 1.7 Total Assets $ 117.0 $ 6,646.9 $ 230.0 $ 189.1 $ 7,183.0 Liabilities: Accrued Expenses and Other Liabilities: Derivative Instruments Designated as Cash Flow Hedges $ — (0.4) $ — $ — $ (0.4) Total Liabilities $ — $ (0.4) $ — $ — $ (0.4) The valuation of assets measured at fair value in the Company’s Consolidated Balance Sheets at December 31, 2021 is summarized below. DOLLARS IN MILLIONS Fair Value Measurements Total Fair Value Quoted Prices Significant Significant Measured at Net Asset Value Assets: Fixed Maturities: U.S. Government and Government Agencies and Authorities $ 132.8 $ 504.6 $ — $ — $ 637.4 States and Political Subdivisions — 1,890.1 — — 1,890.1 Foreign Governments — 5.5 — — 5.5 Corporate Securities: Bonds and Notes — 4,150.1 236.8 — 4,386.9 Redeemable Preferred Stocks — 1.3 6.1 — 7.4 Collateralized Loan Obligations — 752.1 — — 752.1 Other Mortgage- and Asset-backed — 300.5 7.0 — 307.5 Total Investments in Fixed Maturities 132.8 7,604.2 249.9 — 7,986.9 Equity Securities at Fair Value: Preferred Stocks: Finance, Insurance and Real Estate — 34.2 — — 34.2 Other Industries — 16.1 1.5 — 17.6 Common Stocks: Finance, Insurance and Real Estate 18.9 — — — 18.9 Other Industries 2.9 — — — 2.9 Other Equity Interests: Exchange Traded Funds 432.0 — — — 432.0 Limited Liability Companies and Limited Partnerships — — — 325.0 325.0 Total Investments in Equity Securities at Fair Value 453.8 50.3 1.5 325.0 830.6 Other Investments: Convertible Securities at Fair Value — 46.4 — — 46.4 Total Assets $ 586.6 $ 7,700.9 $ 251.4 $ 325.0 $ 8,863.9 Liabilities: Accrued Expenses and Other Liabilities: Derivative Instruments Designated as Cash Flow Hedges $ — $ — $ — $ — $ — Total Liabilities $ — $ — $ — $ — $ —
Fair Value Inputs, Assets, Quantitative Information	The table below presents quantitative information about the significant unobservable inputs utilized by the Company in determining fair values for fixed maturity investments in corporate securities classified as Level 3 at December 31, 2022. DOLLARS IN MILLIONS Unobservable Input Total Fair Value Range of Unobservable Inputs Weighted-average Yield Investment-grade Market Yield $ 56.5 4.6 % - 14.5 % 9.2 % Non-investment-grade: Senior Debt Market Yield 72.9 4.6 - 36.7 10.9 Junior Debt Market Yield 42.1 8.8 - 22.5 15.1 Other Various 56.4 Total Level 3 Fixed Maturity Investments $ 227.9 The table below presents quantitative information about the significant unobservable inputs utilized by the Company in determining fair values for fixed maturity investments in corporate securities classified as Level 3 at December 31, 2021. DOLLARS IN MILLIONS Unobservable Input Total Fair Value Range of Unobservable Inputs Weighted-average Yield Investment-grade Market Yield $ 87.9 2.3 % - 10.3 % 5.4 % Non-investment-grade: Senior Debt Market Yield 76.1 5.1 - 20.2 8.5 Junior Debt Market Yield 53.9 6.0 - 27.5 15.0 Other Various 32.0 Total Level 3 Fixed Maturity Investments $ 249.9
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation	Information by security type pertaining to the changes in the fair value of the Company’s investments classified as Level 3 for the year ended December 31, 2022 is presented below. DOLLARS IN MILLIONS Fixed Maturities Equity Securities Corporate Redeemable Other Mortgage- Preferred Total Balance at Beginning of Year $ 236.8 $ 6.1 $ 7.0 $ 1.5 $ 251.4 Total Losses: Included in Consolidated Statements of (Loss) Income (12.7) — — — (12.7) Included in Other Comprehensive (Loss) Income (19.2) (1.3) (1.9) (0.2) (22.6) Purchases 107.8 2.0 — 2.7 112.5 Settlements — — — — — Sales (114.1) — — (1.9) (116.0) Transfers into Level 3 23.1 — — — 23.1 Transfers out of Level 3 (5.7) — — — (5.7) Balance at End of Year $ 216.0 $ 6.8 $ 5.1 $ 2.1 $ 230.0 Information by security type pertaining to the changes in the fair value of the Company’s investments classified as Level 3 for the year ended December 31, 2021 is presented below. DOLLARS IN MILLIONS Fixed Maturities Equity Securities Total Corporate Redeemable Collateralized Loan Obligations Other Mortgage- Preferred Balance at Beginning of Year $ 433.0 $ 6.2 $ — $ 10.0 $ — $ 449.2 Total Gains (Losses): Included in Consolidated Statements of (Loss) Income 2.8 — — — — 2.8 Included in Other Comprehensive (Loss) Income 1.2 (0.1) 0.1 (0.5) 0.7 1.4 Purchases 104.6 — 17.7 16.2 1.7 140.2 Settlements — — — (0.1) — (0.1) Sales (128.1) — (10.0) (0.2) — (138.3) Transfers into Level 3 8.1 — 10.0 — 1.7 19.8 Transfers out of Level 3 (184.8) — (17.8) (18.4) (2.6) (223.6) Balance at End of Year $ 236.8 $ 6.1 $ — $ 7.0 $ 1.5 $ 251.4
Fair Value, by Balance Sheet Grouping	Presented below are the carrying values and fair value estimates of financial instruments not carried at fair value. December 31, 2022 December 31, 2021 (Dollars in Millions) Carrying Value Fair Value Carrying Value Fair Value Financial Assets: Loans to Policyholders $ 283.4 $ 283.4 $ 286.2 $ 286.2 Short-term Investments 278.4 278.4 284.1 284.1 Mortgage Loans 91.1 91.1 96.8 96.8 Company-Owned Life Insurance 586.5 586.5 448.1 448.1 Equity Securities at Modified Cost 38.4 38.4 32.3 32.3 Financial Liabilities: Long-term Debt $ 1,386.9 $ 1,195.1 $ 1,121.9 $ 1,152.1 Policyholder Obligations 601.0 601.0 401.9 401.9
Fair Value Disclosure of Asset and Liability Not Measured at Fair Value	The table below shows investments reported at fair value using NAV and their unfunded commitments by asset class as of December 31, 2022 and 2021, respectively. Dollars in Millions December 31, 2022 December 31, 2021 Asset Class Fair Value Using NAV Unfunded Fair Value Using NAV Unfunded Reported as Equity Method Limited Liability Investments: Mezzanine Debt $ 114.3 $ 51.6 $ 120.0 $ 43.3 Senior Debt 21.6 42.0 27.5 46.7 Distressed Debt 9.4 — 21.7 100.1 Secondary Transactions 9.3 1.7 11.7 8.3 Hedge Fund 0.5 — 8.7 — Leveraged Buyout 8.9 0.6 8.7 0.1 Growth Equity 1.2 — 0.7 — Real Estate 43.3 — 29.9 — Other 8.5 — 13.0 — Total Equity Method Limited Liability Investments 217.0 95.9 241.9 198.5 Reported as Other Equity Interests at Fair Value: Mezzanine Debt 106.0 56.0 129.3 53.7 Senior Debt 21.9 6.0 29.9 15.1 Distressed Debt 12.5 13.0 44.9 20.0 Secondary Transactions 3.5 4.2 4.0 6.8 Hedge Funds 18.1 — 82.7 — Leveraged Buyout 21.6 9.0 32.2 6.0 Growth Equity 5.4 7.9 2.0 0.7 Other 0.1 0.2 — — Total Reported as Other Equity Interests at Fair Value 189.1 96.3 325.0 102.3 Reported as Equity Securities at Modified Cost: Other 8.3 — 7.7 — Total Reported as Equity Securities at Modified Cost 8.3 — 7.7 — Total Investments in Limited Liability Companies and Limited Partnerships $ 414.4 $ 192.2 $ 574.6 $ 300.8
Investment Holdings, Other than Securities	The following table includes information related to the Company’s investments in certain private equity funds or hedge funds that calculate a net asset value per share: Asset Class Investment Category Includes Mezzanine Debt Funds with investments in junior or subordinated debt and potentially minority equity securities issued by private companies. Senior Debt Funds with investments in senior or first lien debt and potentially minority equity securities typically issued by private companies. Distressed Debt Funds with debt or minority equity investments that are made opportunistically in companies that are in or near default or under financial strain with potential to have an active role in restructuring company. Secondary Transactions Funds that focus on purchasing third party fund interests from investors seeking liquidity within their own portfolio. Hedge Fund Funds that focus primarily on investing in public securities with strategy of generating uncorrelated returns to the public markets. Leveraged Buyout Funds with control equity investments in more mature, positive cash flowing, private companies that are typically purchased with the use of financial leverage. Growth Equity Funds that invest in early or venture stage companies with high growth potential with view towards generating realizations through sale or initial public offering (“IPO”) of company. Real Estate Funds with investments in multi-family housing properties. Other Consists of direct investments of preferred equity or minority common equity investments into private companies structured as limited partnerships or limited liability companies.

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	Goodwill balances by business segment at December 31, 2022 and 2021 were: DOLLARS IN MILLIONS 2022 2021 Specialty Property & Casualty Insurance $ 1,043.0 $ 1,043.0 Preferred Property & Casualty Insurance 49.6 49.6 Life & Health Insurance 207.7 219.4 Total $ 1,300.3 $ 1,312.0
Schedule of Definite-Life Intangible Assets	The gross carrying amount and accumulated amortization of Definite and Indefinite life intangible assets at December 31, 2022 and 2021 were: 2022 2021 (Dollars in Millions) Gross Carrying Amount Accumulated Amortization Net Amount Gross Accumulated Amortization Net Amount Definite Life Intangible Assets: Value of Business Acquired $ 237.5 $ 222.1 $ 15.4 $ 237.5 $ 218.5 $ 19.0 Customer Relationships 43.8 41.1 2.7 43.8 38.1 5.7 Agent Relationships 81.6 31.0 50.6 81.6 23.6 58.0 Trade Names 1.8 1.7 0.1 1.8 0.9 0.9 Internal-Use Software 352.1 153.9 198.2 341.7 132.4 209.3 Total Definite Life Intangible Assets 716.8 449.8 267.0 706.4 413.5 292.9 Indefinite Life Intangible Assets: Trade Names 5.2 — 5.2 5.2 — 5.2 Insurance Licenses 44.5 — 44.5 45.1 — 45.1 Total Indefinite Life Intangible Assets 49.7 — 49.7 50.3 — 50.3 Total Intangible Assets $ 766.5 $ 449.8 $ 316.7 $ 756.7 $ 413.5 $ 343.2
Schedule of Indefinite-Life Intangible Assets	The gross carrying amount and accumulated amortization of Definite and Indefinite life intangible assets at December 31, 2022 and 2021 were: 2022 2021 (Dollars in Millions) Gross Carrying Amount Accumulated Amortization Net Amount Gross Accumulated Amortization Net Amount Definite Life Intangible Assets: Value of Business Acquired $ 237.5 $ 222.1 $ 15.4 $ 237.5 $ 218.5 $ 19.0 Customer Relationships 43.8 41.1 2.7 43.8 38.1 5.7 Agent Relationships 81.6 31.0 50.6 81.6 23.6 58.0 Trade Names 1.8 1.7 0.1 1.8 0.9 0.9 Internal-Use Software 352.1 153.9 198.2 341.7 132.4 209.3 Total Definite Life Intangible Assets 716.8 449.8 267.0 706.4 413.5 292.9 Indefinite Life Intangible Assets: Trade Names 5.2 — 5.2 5.2 — 5.2 Insurance Licenses 44.5 — 44.5 45.1 — 45.1 Total Indefinite Life Intangible Assets 49.7 — 49.7 50.3 — 50.3 Total Intangible Assets $ 766.5 $ 449.8 $ 316.7 $ 756.7 $ 413.5 $ 343.2
Schedule of Definite-Life Intangible Assets, Future Amortization Expense	The amount of amortization expense expected to be recorded in the next five years for definite life intangible assets is as follows: DOLLARS IN MILLIONS 2023 2024 2025 2026 2027 Definite Life Intangible Assets: Value of Business Acquired $ 1.8 $ 1.6 $ 1.6 $ 1.5 $ 1.5 Customer Relationships 1.1 0.4 0.4 0.3 0.2 Agent Relationships 7.3 5.5 4.9 4.9 1.2 Internal-Use Software 37.2 30.3 23.8 20.2 15.3 Total $ 47.4 $ 37.8 $ 30.7 $ 26.9 $ 18.2

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	12 Months Ended
	Dec. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Variable Interest Entities	The following table presents information regarding activity in the Company’s Alternative Energy Partnership Investments as of the periods indicated: Year Ended (Dollars in millions) Dec 31, 2022 Dec 31, 2021 Fundings $ — $ 80.0 Cash distribution from investment 3.3 0.5 Loss on investments in Alternative Energy Partnership (19.9) (61.2) Income tax credits recognized 4.3 73.9 Tax benefit recognized from Alternative Energy Partnership 3.7 5.1 The following table represents the carrying value of the associated assets and liabilities and the associated maximum loss exposure of the Alternative Energy Partnership Investments as of the dates indicated: (Dollars in millions) Dec 31, 2022 Cash $ 3.0 Equipment, net of depreciation 261.7 Other assets 5.1 Total unconsolidated assets 269.7 Maximum loss exposure 16.3

Other Comprehensive Income (L_2

Other Comprehensive Income (Loss) And Accumulated Other Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2022
Equity [Abstract]
Schedule of Comprehensive Income (Loss)	The tables below display the changes in Accumulated Other Comprehensive (Loss) Income by component for the years ended December 31, 2022, 2021 and 2020: (Dollars in Millions) Net Unrealized Gains (Losses) on Other Investments Net Unrealized Gains (Losses) on Investments with an Allowance for Credit Losses Net Unrecognized Postretirement Benefit Costs (Loss) Gain on Cash Flow Hedges Total Balance as of January 1, 2020 $ 439.4 $ — $ (100.6) $ (2.7) $ 336.1 Other Comprehensive Income (Loss) Before Reclassifications 304.4 (2.1) 4.3 0.4 307.0 Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) Net of Tax Benefit (Expense) of $3.6, $—, $(13.5), $— and $(9.9) (13.2) — 50.6 — 37.4 Other Comprehensive Income (Loss) Net of Tax (Expense) Benefit of $(78.7), $0.5, $(15.3), $— and $(93.5) 291.2 (2.1) 54.9 0.4 344.4 Balance as of December 31, 2020 $ 730.6 $ (2.1) $ (45.7) $ (2.3) $ 680.5 Other Comprehensive Loss Before Reclassifications (182.0) (1.6) (6.5) — (190.1) Amounts Reclassified from Accumulated Other Comprehensive Loss Net of Tax Benefit (Expense) of $11.3, $—, $—, $(0.1) and $11.2 (42.8) — 0.1 0.4 (42.3) Other Comprehensive (Loss) Income Net of Tax Benefit (Expense) of $59.7, $0.4, $2.4, $(0.1) and $62.4 (224.8) (1.6) (6.4) 0.4 (232.4) Balance as of December 31, 2021 $ 505.8 $ (3.7) $ (52.1) $ (1.9) $ 448.1 Other Comprehensive (Loss) Income Before Reclassifications (1,215.1) 2.0 15.2 4.7 (1,193.2) Amounts Reclassified from Accumulated Other Comprehensive (Loss) Income Net of Tax Benefit (Expense) of $2.7, $0.1, $0.1, $— and $2.9 (10.1) (0.5) (0.3) — (10.9) Other Comprehensive (Loss) Income Net of Tax Benefit (Expense) of $325.9, $(0.4), $(4.0), $(1.2) and $320.3 (1,225.2) 1.5 14.9 4.7 (1,204.1) Balance as of December 31, 2022 $ (719.4) $ (2.2) $ (37.2) $ 2.8 $ (756.0)

Pension Benefits (Tables)

Pension Benefits (Tables) - Pension Plans, Defined Benefit	12 Months Ended
	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Schedule of Changes in Fair Value of Plan Assets	Changes in Fair Value of Plan Assets and Changes in Projected Benefit Obligation for the Pension Plan for the years ended December 31, 2022 and 2021 is presented below. DOLLARS IN MILLIONS 2022 2021 Fair Value of Plan Assets at Beginning of Year $ 391.7 $ 405.4 Actual Return on Plan Assets (65.1) (0.7) Benefits Paid (13.7) (13.0) Settlement Benefits 2.9 — Fair Value of Plan Assets at End of Year 315.8 391.7 Projected Benefit Obligation at Beginning of Year 378.8 382.3 Interest Cost 8.7 7.2 Benefits Paid (13.7) (13.0) Settlement Benefits 2.9 — Plan Amendments — 18.3 Actuarial Gains (84.5) (16.0) Projected Benefit Obligation at End of Year 292.2 378.8 Funded Status—Plan Assets in Excess of Projected Benefit Obligation $ 23.6 $ 12.9 Unamortized Amount Reported in AOCI at End of Year $ (63.1) $ (77.6) Accumulated Benefit Obligation at End of Year $ 289.3 $ 378.8
Schedule of Assumptions Used	The weighted-average discount rate and rate of increase in future compensation levels used to estimate the components of the Projected Benefit Obligation for the Pension Plan at December 31, 2022 and 2021 were: 2022 2021 Discount Rate 5.05 % 2.89 % Rate of Increase in Future Compensation Levels — — The weighted-average discount rate, service cost discount rate, interest cost discount rate, rate of increase in future compensation levels and expected long-term rate of return on plan assets used to develop the components of Pension Expense for the Pension Plan for the years ended December 31, 2022, 2021 and 2020 were: 2022 2021 2020 Weighted-average Discount Rate 2.89 % 2.56 % 2.56 % Service Cost Discount Rate N/A 2.41 2.42 Interest Cost Discount Rate 2.35 1.90 1.89 Rate of Increase in Future Compensation Levels 3.40 3.40 3.40 Expected Long Term Rate of Return on Plan Assets 2.08 2.70 4.90
Schedule of Allocation of Plan Assets	Asset allocations for the Pension Plan at December 31, 2022 and 2021 by asset category were: ASSET CATEGORY 2022 2021 Corporate Bonds and Notes 27 % 30 % Bond Exchange Traded Funds 35 32 Cash and Short-term Investments 37 36 Other Assets 1 2 Total 100 % 100 %
Fair Value, Measurement Inputs, Disclosure	Fair value measurements for the Pension Plan’s assets at December 31, 2022 are summarized below. DOLLARS IN MILLIONS Quoted Prices Significant Significant Measured at Net Asset Value Fair Value Fixed Maturities: U.S. Government and Government Agencies and Authorities $ 40.1 $ — $ — $ — $ 40.1 States and Political Subdivisions — 0.1 — — 0.1 Foreign Governments — 0.4 — — 0.4 Corporate Bonds and Notes — 45.4 — — 45.4 Equity Securities: Other Equity Interests: Bond Exchange Traded Funds 111.1 — — — 111.1 Limited Liability Companies and Limited Partnerships — — — 1.8 1.8 Short-term Investments 116.1 — — — 116.1 Receivables and Other 0.8 — — — 0.8 Total $ 268.1 $ 45.9 $ — $ 1.8 $ 315.8 Fair value measurements for the Pension Plan’s assets at December 31, 2021 are summarized below. DOLLARS IN MILLIONS Quoted Prices Significant Significant Measured at Net Asset Value Fair Value Fixed Maturities: U.S. Government and Government Agencies and Authorities $ 54.6 $ — $ — $ — $ 54.6 States and Political Subdivisions — 0.1 — — 0.1 Foreign Governments — 0.6 — — 0.6 Corporate Bonds and Notes — 62.3 — — 62.3 Equity Securities: Other Equity Interests: Bond Exchange Traded Funds 125.0 — — — 125.0 Limited Liability Companies and Limited Partnerships — — — 8.4 8.4 Short-term Investments 140.2 — — — 140.2 Receivables and Other 0.5 — — — 0.5 Total $ 320.3 $ 63.0 $ — $ 8.4 $ 391.7
Schedule of Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss)	The components of Comprehensive Pension (Income) Expense for the Pension Plan for the years ended December 31, 2022, 2021 and 2020 were: DOLLARS IN MILLIONS 2022 2021 2020 Service Cost Earned During the Year $ — $ — $ — Interest Cost on Projected Benefit Obligation 8.7 7.2 16.5 Expected Return on Plan Assets (7.4) (9.5) (27.6) Amortization of Prior Service Cost 0.7 — — Amortization of Actuarial Loss 1.8 2.9 5.6 Settlement Expense — — 64.1 Pension Expense Recognized in Consolidated Statements of (Loss) Income 3.8 0.6 58.6 Unrecognized Pension Loss Arising During the Year (12.0) (6.0) (7.8) Prior Service Cost Arising During the Year — 18.3 — Amortization of Prior Service Cost (0.7) — — Amortization of Accumulated Unrecognized Pension Loss (1.8) (2.9) (69.8) Comprehensive Pension (Income) Expense $ (10.7) $ 10.0 $ (19.0)
Schedule of Expected Benefit Payments	The following benefit payments (net of participant contributions), which consider expected future service of certain participants that remain eligible for a benefit accrual, as appropriate, are expected to be paid from the Pension Plan: DOLLARS IN MILLIONS Years Ending December 31, 2023 2024 2025 2026 2027 2028-2032 Estimated Pension Benefit Payments $ 18.0 $ 17.2 $ 18.0 $ 18.7 $ 19.2 $ 99.1
Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Schedule of Changes in Fair Value of Plan Assets

Postretirement Benefits Other_2

Postretirement Benefits Other Than Pensions (Tables) - Other Postretirement Benefit Plan, Defined Benefit	12 Months Ended
	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Schedule of Changes in Fair Value of Plan Assets	Changes in Fair Value of Plans’ Assets and Changes in Accumulated Postretirement Benefit Obligation for the years ended December 31, 2022 and 2021 were: DOLLARS IN MILLIONS 2022 2021 Fair Value of Plans’ Assets at Beginning of Year $ — $ — Employer Contributions 1.0 1.1 Plan Participants’ Contributions 0.3 0.1 Benefits Paid (1.3) (1.2) Fair Value of Plan Assets at End of Year — — Accumulated Postretirement Benefit Obligation at Beginning of Year 11.2 13.7 Service Cost 0.2 0.3 Interest Cost 0.2 0.1 Plan Participants’ Contributions 0.3 0.1 Benefits Paid (1.3) (1.2) Actuarial Gain (2.5) (1.8) Accumulated Postretirement Benefit Obligation at End of Year 8.1 11.2 Funded Status—Accumulated Postretirement Benefit Obligation in Excess of Plans’ Assets $ (8.1) $ (11.2) Unamortized Actuarial Gain Reported in AOCI at End of Year $ 16.9 $ 17.5
Schedule of Assumptions Used	The weighted-average discount rate and rate of increase in future compensation levels used to develop the components of the Accumulated Postretirement Benefit Obligation at December 31, 2022 and 2021 were: 2022 2021 Discount Rate 5.08 % 2.56 % Rate of Increase in Future Compensation Levels 2.20 2.20 The weighted-average discount rate and rate of increase in future compensation levels used to develop OPEB Expense for the years ended December 31, 2022, 2021 and 2020 were: 2022 2021 2020 Weighted-average Discount Rate 2.56 % 1.99 % 2.96 % Service Cost Discount Rate 2.79 2.06 2.94 Interest Cost Discount Rate 1.97 1.19 2.47 Effective Rate for Interest on Service Cost 2.54 — — Rate of Increase in Future Compensation Levels 2.20 2.20 2.20
Schedule of Comprehensive Other Postretirement Employee Benefit Expense	The components of Comprehensive OPEB (Income) Expense for the years ended December 31, 2022, 2021 and 2020 were: DOLLARS IN MILLIONS 2022 2021 2020 Service Cost Earned During the Year $ 0.2 $ 0.3 $ 0.2 Interest Cost on Accumulated Postretirement Benefit Obligation 0.2 0.1 0.3 Amortization of Prior Service Credit (1.3) (1.3) (1.3) Amortization of Accumulated Unrecognized OPEB Gain (1.8) (1.7) (1.9) OPEB Income Recognized in Consolidated Statements of (Loss) Income (2.7) (2.6) (2.7) Unrecognized OPEB (Gain) Loss Arising During the Year (2.5) (1.8) 1.9 Amortization of Prior Service Credit 1.3 1.3 1.3 Amortization of Accumulated Unrecognized OPEB Gain 1.8 1.7 1.9 Comprehensive OPEB (Income) Expense $ (2.1) $ (1.4) $ 2.4
Schedule of Expected Benefit Payments	The following benefit payments (net of participant contributions), which consider expected future service, as appropriate, are expected to be paid: DOLLARS IN MILLIONS Years Ending December 31, 2023 2024 2025 2026 2027 2028-2032 Estimated Benefit Payments: Excluding Medicare Part D Subsidy $ 1.0 $ 1.1 $ 1.0 $ 0.9 $ 0.8 $ 3.2 Expected Medicare Part D Subsidy — — — — — — Net Estimated Benefit Payments $ 1.0 $ 1.1 $ 1.0 $ 0.9 $ 0.8 $ 3.2

Long-term Equity-based Compen_2

Long-term Equity-based Compensation (Tables)	12 Months Ended
	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions	The assumptions used in the Black-Scholes pricing model for Tandem Awards granted during the years ended December 31, 2022, 2021 and 2020 are presented below. 2022 2021 2020 RANGE OF VALUATION ASSUMPTIONS Expected Volatility 33.20 % - 37.67 % 33.67 % - 38.04 % 29.22 % - 37.27 % Risk-free Interest Rate 1.20 - 4.33 0.26 - 1.33 0.17 - 1.46 Expected Dividend Yield 1.59 - 2.25 1.18 - 1.78 1.19 - 1.48 WEIGHTED-AVERAGE EXPECTED LIFE IN YEARS Employee Grants 4 - 6 4 - 6 4 - 6
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award	Tandem Award activity for the year ended December 31, 2022 is presented below. Shares Weighted- Weighted- Aggregate Outstanding at Beginning of the Year 2,103,979 $ 61.93 Granted 537,768 52.70 Exercised (18,937) 35.95 Forfeited or Expired (297,234) 69.06 Outstanding at December 31, 2022 2,325,576 59.10 6.23 $ 6.2 Vested and Expected to Vest at December 31, 2022 2,259,869 $ 59.05 6.16 $ 6.2 Exercisable at December 31, 2022 1,565,065 $ 58.91 5.05 $ 6.2
Schedule of Options Outstanding	Information pertaining to Tandem Awards outstanding at December 31, 2022 is presented below. Outstanding Exercisable Range of Exercise Prices ($) Shares Weighted- Weighted- Shares Weighted- $ 20.01 - 30.00 104,562 $ 27.71 3.17 104,562 $ 27.71 30.01 - 40.00 107,969 33.98 2.23 107,969 33.98 40.01 - 50.00 345,616 42.44 3.74 345,616 42.44 50.01 - 60.00 798,652 55.44 7.57 306,082 59.83 60.01 - 70.00 335,981 69.24 7.54 149,172 68.72 70.01 - 80.00 604,689 76.60 6.38 527,043 76.53 80.01 - 90.00 28,107 83.40 6.54 24,621 83.74 20.01 - 90.00 2,325,576 59.10 6.23 1,565,065 58.91
Schedule of Share-based Compensation, Nonemployee Director Deferred Stock Unit Award Plan, Activity	Activity related to DSU awards for the year ended December 31, 2022 is presented below. Number of DSUs Weighted- Vested Balance at Beginning of the Year 44,820 $ 44.74 Reduction for Shares Issued on Conversion (8,220) 42.43 Vested Balance at December 31, 2022 36,600 $ 45.25
Time Vested Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Schedule of Share-based Compensation, Restricted Stock Units and Performance Stock Units Activity	Activity related to nonvested RSUs for the year ended December 31, 2022 is presented below. Time-based Restricted Stock Unit Awards Number of Restricted Stock Units Weighted- Nonvested Balance at Beginning of the Year 81,701 $ 69.82 Granted 531,841 52.29 Vested (30,591) 71.43 Forfeited (104,697) 53.60 Nonvested Balance at December 31, 2022 478,254 $ 53.78
Performance Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Schedule of Share-based Compensation, Restricted Stock Units and Performance Stock Units Activity	Activity related to nonvested PSU awards for the year ended December 31, 2022 is presented below. PSU Awards Number of PSUs Weighted- Nonvested Balance at Beginning of the Year 600,321 $ 79.15 Granted 305,035 55.90 Vested (113,651) 73.69 Forfeited (181,131) 78.38 Nonvested Balance at December 31, 2022 610,574 $ 68.78

Policyholder Contract Liabili_2

Policyholder Contract Liabilities (Tables)	12 Months Ended
	Dec. 31, 2022
Insurance [Abstract]
Schedule of Liability for Future Policy Benefits	Policyholder Obligations at December 31, 2022 and 2021 were as follows: DOLLARS IN MILLIONS December 31, 2022 2021 FHLB Funding Agreements $ 601.0 $ 401.9 Universal Life-type Policyholder Account Balances 100.3 102.1 Total $ 701.3 $ 504.0
Schedule of Federal Home Loan Bank, Advances, by Branch of FHLB Bank	DOLLARS IN MILLIONS 2022 2021 Liability under Funding Agreements $ 601.0 $ 401.9 Fair Value of Collateral Pledged 744.6 556.6 FHLB of Chicago Common Stock Owned at Cost 17.5 11.8

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2022
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	Total amortized cost of Long-term Debt outstanding at December 31, 2022 and 2021 was: (Dollars in Millions) Dec 31, 2022 Dec 31, 2021 Senior Notes: 5.000% Senior Notes due September 19, 2022 $ — $ 276.7 4.350% Senior Notes due February 15, 2025 449.3 449.0 2.400% Senior Notes due September 30, 2030 396.6 396.2 3.800% Senior Notes due February 23, 2032 395.5 — 5.875% Fixed-Rate Reset Junior Subordinated Debentures due 2062 145.5 — Total Long-term Debt Outstanding $ 1,386.9 $ 1,121.9

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2022
Leases [Abstract]
Lease, Cost	The following table presents operating lease right-of-use assets and lease liabilities. (Dollars in Millions) 2022 2021 Operating Lease Right-of-Use Assets $ 45.1 $ 64.4 Operating Lease Liabilities 72.6 84.8 Lease expenses are primarily included in insurance expenses in the Consolidated Statements of (Loss) Income. Additional information regarding the Company’s operating leases is presented below. (Dollars in Millions) 2022 2021 Lease Cost: Amortization of Right-of-Use Assets - Finance Leases $ — $ 0.2 Operating Lease Cost 21.3 22.3 Variable Lease Cost 0.3 0.2 Short-Term Lease Cost (1) 3.8 5.0 Total Lease Expense $ 25.4 $ 27.7 Less: Sub-Lease Income 0.1 0.3 Total Lease Cost $ 25.3 $ 27.4 (1) - Leases with an initial term of twelve months or less are not recorded on the Consolidated Balance Sheets. DOLLARS IN MILLIONS 2022 2021 Operating Lease Right-of-Use Assets $ 12.2 $ 12.8 Operating Lease Liabilities 24.4 25.8 Supplemental cash flow information related to Kemper’s operating leases for the year-ended December 31, 2022 and December 31, 2021 respectively are presented follows. DOLLARS IN MILLIONS 2022 2021 Operating Cash Flows from Operating Leases (Fixed Payments) $ 2.4 $ 2.2 Operating Cash Flows from Operating Leases (Liability Reduction) 1.4 1.1 Right-of-Use Assets Obtained in Exchange for New Operating Lease Liabilities — — NOTE 4. LEASES (Continued) Significant judgments and assumptions for determining lease asset and liability as December 31, 2022 and December 31, 2021 respectively are presented below. DOLLARS IN MILLIONS 2022 2021 Weighted-average Remaining Lease Term - Operating Leases 11.0 years 11.9 years Weighted-average Discount Rate - Operating Leases 4.0 % 4.0 %
Schedule of Future Minimum Lease Payments for Operating Leases	Future minimum operating lease payments at December 31, 2022 were: DOLLARS IN MILLIONS Operating 2023 $ 2.4 2024 2.5 2025 2.6 2026 2.6 2027 2.7 2028 and Thereafter 17.7 Total Future Payments $ 30.5 Less Discount 6.1 Present Value of Minimum Lease Payments $ 24.4

Catastrophe Reinsurance (Tables

Catastrophe Reinsurance (Tables)	12 Months Ended
	Dec. 31, 2022
Reinsurance Disclosures [Abstract]
Reinsurance Retention Policy	Coverage on individual catastrophes provided under the excess of loss reinsurance contracts effective January 1, 2022 to December 31, 2022 is provided in various layers as presented below. DOLLARS IN MILLIONS Catastrophe Losses and Percentage In Excess of Up to Retained $ — $ 50.0 — % 1st Layer of Coverage 50.0 150.0 95.0 2nd Layer of Coverage 150.0 250.0 95.0 3rd Layer of Coverage 250.0 325.0 95.0 4th Layer of Coverage 325.0 350.0 95.0 Coverage on individual catastrophes provided under the excess of loss reinsurance contracts effective January 1, 2021 to December 31, 2021 is provided in various layers as presented below. DOLLARS IN MILLIONS Catastrophe Losses and Percentage In Excess of Up to Retained $ — $ 50.0 — % 1st Layer of Coverage 50.0 150.0 95.0 2nd Layer of Coverage 150.0 250.0 95.0 3rd Layer of Coverage 250.0 275.0 95.0 Coverage on individual catastrophes provided under the excess of loss reinsurance contracts effective January 1, 2020 to December 31, 2020 is provided in various layers as presented below. DOLLARS IN MILLIONS Catastrophe Losses and Percentage In Excess of Up to Retained $ — $ 50.0 — % 1st Layer of Coverage 50.0 150.0 95.0 2nd Layer of Coverage 150.0 250.0 95.0 3rd Layer of Coverage 250.0 275.0 95.0 Coverage provided under the 2022 aggregate property catastrophe reinsurance contract is summarized below. Aggregate Catastrophe DOLLARS IN MILLIONS In Excess of Up to Retained $ — $ 65.0 Coverage 65.0 115.0 Coverage provided under the 2021 aggregate property catastrophe reinsurance contract is summarized below. Aggregate Catastrophe DOLLARS IN MILLIONS In Excess of Up to Retained $ — $ 60.0 Coverage 60.0 110.0
Catastrophe Reinsurance Premiums	Reinsurance premiums for the Company’s catastrophe reinsurance programs and the FHCF Program reduced earned premiums for the years ended December 31, 2022, 2021 and 2020 by the following: DOLLARS IN MILLIONS 2022 2021 2020 Specialty Property & Casualty Insurance $ 8.9 $ 7.0 $ 4.8 Preferred Property & Casualty Insurance 22.5 22.0 20.7 Life & Health Insurance 0.6 1.3 1.2 Total Ceded Catastrophe Reinsurance Premiums $ 32.0 $ 30.3 $ 26.7
Catastrophe Losses and LAE, Net Reinsurance Recoveries	Catastrophe losses and LAE (including reserve development), net of reinsurance recoveries, for the years ended December 31, 2022, 2021 and 2020 by business segment are presented below. DOLLARS IN MILLIONS 2022 2021 2020 Specialty Property & Casualty Insurance $ 23.6 $ 16.0 $ 12.5 Preferred Property & Casualty Insurance 48.3 73.5 81.5 Life & Health Insurance 3.3 12.9 12.9 Total Catastrophe Losses and LAE $ 75.2 $ 102.4 $ 106.9

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Schedule of Deferred Tax Assets and Liabilities	The tax effects of temporary differences that give rise to significant portions of the Company’s Net Deferred Income Tax Assets and Deferred Income Tax Liabilities at December 31, 2022 and 2021 were: DOLLARS IN MILLIONS 2022 2021 Deferred Income Tax Assets: Insurance Reserves $ 33.5 $ 31.9 Unearned Premium Reserves 70.8 78.3 Tax Capitalization of Policy Acquisition Costs 45.9 46.6 Payroll and Employee Benefit Accruals 32.8 36.4 Investments 152.2 — Net Operating Loss and Credit Carryforwards 49.7 3.6 Other 22.6 11.6 Total Deferred Income Tax Assets 407.5 208.4 Deferred Income Tax Liabilities: Investments — 209.1 Deferred Policy Acquisition Costs 131.3 142.4 Life VIF and P&C Customer Relationships 3.7 4.6 Goodwill and Other Intangible Assets Acquired 36.9 38.0 Depreciable Assets 35.7 38.7 Other 10.5 2.6 Total Deferred Income Tax Liabilities 218.1 435.4 Net Deferred Income Tax Assets / (Liabilities) $ 189.4 $ (227.0)
Summary of Operating Loss Carryforwards	The expiration of federal net operating loss (“NOL”) and tax credit carryforwards and their related deferred income tax assets at December 31, 2022 is presented below by year of expiration. DOLLARS IN MILLIONS NOL Carry-forwards Deferred Tax Asset Expiring in: 2039 $ 1.4 $ 1.4 2040 1.4 1.4 2041 46.0 46.0 No Expiration 4.3 0.9 Total All Years $ 53.1 $ 49.7
Schedule of Components of Income Tax Expense (Benefit)	The components of Income Tax Benefit (Expense) from Operations for the years ended December 31, 2022, 2021 and 2020 were: DOLLARS IN MILLIONS 2022 2021 2020 Current Income Tax Benefit (Expense) $ (6.2) $ 122.7 $ (86.6) Deferred Income Tax Benefit (Expense) 94.5 2.1 (13.6) Income Tax Benefit (Expense) $ 88.3 $ 124.8 $ (100.2)
Schedule of Effective Income Tax Rate Reconciliation	A reconciliation of the Statutory Federal Income Tax Benefit (Expense) and Rate to the Company’s Effective Income Tax Benefit (Expense) and Rate from Operations for the years ended December 31, 2022, 2021 and 2020 is presented below. DOLLARS IN MILLIONS 2022 2021 2020 Amount Rate Amount Rate Amount Rate Statutory Federal Income Tax Benefit (Expense) $ 81.8 21.0 % $ 51.5 21.0 % $ (107.1) 21.0 % Tax-exempt Income and Dividends Received Deduction 5.3 1.3 4.6 1.9 4.0 (0.8) Untaxed Earnings on Company-Owned Life Insurance 8.0 2.1 5.4 2.2 2.7 (0.5) Tax credits 6.5 1.7 66.1 27.0 3.2 (0.6) Stock-Based Compensation (1.3) (0.3) 0.3 0.1 2.2 (0.5) Nondeductible Executive Compensation (1.5) (0.4) (2.7) (1.1) (2.7) 0.5 Expense on Transactions (11.5) (3.0) — — — — Other, Net 1.0 0.3 (0.4) (0.2) (2.5) 0.5 Effective Income Tax Benefit (Expense) $ 88.3 22.7 % $ 124.8 50.9 % $ (100.2) 19.6 %
Comprehensive Income Tax Benefit and Expenses	Comprehensive Income Tax Benefit (Expense) included in the Consolidated Financial Statements for the years ended December 31, 2022, 2021 and 2020 was: DOLLARS IN MILLIONS 2022 2021 2020 Income Tax Benefit (Expense): Operations $ 88.3 $ 124.8 $ (100.2) Unrealized Depreciation (Appreciation) on Securities 325.5 (60.1) (78.3) Tax Effects from Postretirement Benefit Plans (4.0) (2.4) (15.3) Tax Effects from Cash Flow Hedge (1.2) 0.1 — Comprehensive Income Tax Benefit (Expense) $ 408.6 $ 62.4 $ (193.8)

Schedule 2 - Parent Company F_3

Schedule 2 - Parent Company Financial Statements (Tables)	12 Months Ended
	Dec. 31, 2022
Condensed Financial Information Disclosure [Abstract]
Parent Company Balance Sheets	KEMPER CORPORATION PARENT COMPANY BALANCE SHEETS (Dollars in Millions) December 31, 2022 2021 ASSETS Investments in Subsidiaries $ 3,621.6 $ 4,729.1 Fixed Maturities at Fair Value (Amortized Cost: 2022 – $122.5; 2021 - $0.3) 120.0 0.4 Equity Securities at Fair Value (Cost: 2022 - $39.3; 2021 - $106.8) 24.1 107.4 Short-term Investments 67.7 96.9 Cash 66.3 27.7 Other Receivables 5.6 2.3 Current Income Taxes 12.0 — Right-of-Use Assets 12.2 12.8 Other Assets 35.6 18.9 Total Assets $ 3,965.1 $ 4,995.5 LIABILITIES AND SHAREHOLDERS’ EQUITY Senior Notes Payable, 4.350% due 2025 (Fair Value: 2022 – $438.5; 2021 – $481.4) $ 449.3 $ 449.0 Senior Notes Payable, 2.400% due 2030 (Fair Value: 2022 – $310.3; 2021 – $387.8) 396.6 396.2 Senior Notes Payable, 3.800% due 2032 (Fair Value: 2022 - $336.2; 2021 - $0.0) 395.5 — Fixed-Rate Reset Junior Subordinated Debentures, 5.875% due 2062 (Fair Value: 2022 - $110.1; 2021 - $0.0) 145.5 — Current Income Tax Liability — 18.5 Deferred Income Tax Liability 49.1 46.5 Liabilities for Benefit Plans 35.4 42.3 Right-of-Use Liabilities 24.4 25.8 Accrued Expenses and Other Liabilities 26.1 9.5 Total Liabilities 1,521.9 987.8 Shareholders’ Equity: Common Stock 6.4 6.4 Additional Paid-in Capital 1,812.7 1,790.7 Retained Earnings 1,380.1 1,762.5 Accumulated Other Comprehensive (Loss) Income (756.0) 448.1 Total Shareholders’ Equity 2,443.2 4,007.7 Total Liabilities and Shareholders’ Equity $ 3,965.1 $ 4,995.5 See Accompanying Report of Independent Registered Public Accounting Firm.
Parent Company Statements of Income	KEMPER CORPORATION PARENT COMPANY STATEMENTS OF (LOSS) INCOME (Dollars in Millions) For the Year Ended December 31, 2022 2021 2020 Net Investment Income $ 16.6 $ 3.4 $ 1.4 (Loss) Income from Change in Fair Value of Equity Securities (14.8) 10.0 4.3 Net Realized Investment Gains 3.0 10.6 0.1 Impairment Losses (0.2) — — Other Income 1.1 — — Total Revenues 5.7 24.0 5.8 Interest Expense 52.6 32.0 24.2 Pension Settlement Expense — — 64.1 Other Operating Expenses (Benefits) 6.6 5.9 (3.6) Total Operating Expenses 59.2 37.9 84.7 Loss before Income Taxes and Equity in Net (Loss) Income of Subsidiaries (53.5) (13.9) (78.9) Income Tax Benefit (Expense) 14.0 (0.6) 13.4 Loss before Equity in Net Loss of Subsidiaries (39.5) (14.5) (65.5) Equity in Net (Loss) Income of Subsidiaries (261.7) (106.0) 475.4 Net (Loss) Income $ (301.2) $ (120.5) $ 409.9 See Accompanying Report of Independent Registered Public Accounting Firm.
Parent Company Statements of Comprehensive Income	KEMPER CORPORATION PARENT COMPANY STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (Dollars in Millions) For the Year Ended December 31, 2022 2021 2020 Net (Loss) Income $ (301.2) $ (120.5) $ 409.9 Other Comprehensive (Loss) Income: Changes in Net Unrealized (Losses) Gains on Investment Securities: Having No Credit Losses Recognized in Consolidated Statements of (Loss) Income: Securities Held by Subsidiaries (1,535.7) (230.4) 378.7 Securities Held by Parent (2.6) — 8.0 Having Credit Losses Recognized in Consolidated Statements of (Loss) Income: Securities Held by Subsidiaries 1.9 (2.0) (2.6) Reclassification Adjustment for Amounts Included in Net (Loss) Income: Securities Held by Subsidiaries (12.8) (43.5) (16.6) Securities Held by Parent — (10.6) (0.1) Unrecognized Postretirement Benefit Costs Arising During the Year: Securities Held by Subsidiaries 1.1 0.6 — Securities Held by Parent 18.2 (9.5) 3.6 Reclassification Adjustments for Amounts Included in Net (Loss) Income: Pension Settlement Cost Recognized — — 64.1 Amortization of Unrecognized Postretirement Benefit Costs (0.4) 0.1 2.5 Gains on Cash Flow Hedge 5.9 0.5 0.4 Other Comprehensive (Loss) Income before Income Taxes (1,524.4) (294.8) 438.0 Income Tax Benefit (Expense): Changes in Net Unrealized (Losses) Gains on Investment Securities: Having No Credit Losses Recognized in Consolidated Statements of (Loss) Income: Securities Held by Subsidiaries 322.7 48.4 (80.6) Securities Held by Parent 0.5 — (1.7) Having Credit Losses Recognized in Consolidated Statements of (Loss) Income: Securities Held by Subsidiaries (0.4) 0.4 0.5 Reclassification Adjustment for Amounts Included in Net (Loss) Income: Securities Held by Subsidiaries 2.7 9.1 3.5 Securities Held by Parent — 2.2 — Unrecognized Postretirement Benefit Costs Arising During the Year: Securities Held by Subsidiaries (0.2) (0.1) — Securities Held by Parent (3.9) 2.5 (1.3) Reclassification Adjustments for Amounts Included in Net (Loss) Income: Pension Settlement Cost Recognized — — (13.5) Amortization of Unrecognized Postretirement Benefit Costs 0.1 — (0.5) Changes in Gain on Cash Flow Hedges (1.2) (0.1) — Income Tax Benefit (Expense) 320.3 62.4 (93.6) Other Comprehensive (Loss) Income (1,204.1) (232.4) 344.4 Total Comprehensive (Loss) Income $ (1,505.3) $ (352.9) $ 754.3 See Accompanying Report of Independent Registered Public Accounting Firm.
Parent Company Statements of Cash Flows	KEMPER CORPORATION PARENT COMPANY STATEMENTS OF CASH FLOWS (Dollars in Millions) For the Year Ended December 31, 2022 2021 2020 Operating Activities: Net (Loss) Income $ (301.2) $ (120.5) $ 409.9 Adjustment Required to Reconcile Net (Loss) Income to Net Cash (Used in) Provided by Operations: Equity in Net Loss (Income) of Subsidiaries 261.7 106.0 (475.4) Cash Dividends from Subsidiaries 25.3 170.3 216.2 Net Realized Investment Gains (3.0) (10.6) (0.1) Settlement Costs Related to Defined Benefit Pension Plan — — 64.1 Impairment Losses 0.2 — — Loss (Income) from Change in Fair Value of Equity and Convertible Securities 14.8 (10.0) (4.3) Other, Net (48.9) (35.3) 52.2 Net Cash (Used in) Provided by Operating Activities (51.1) 99.9 262.6 Investing Activities: Capital Contributed to Subsidiaries (537.8) (36.5) (62.0) Proceeds from Sales, Calls and Maturities of Fixed Maturities 0.1 181.3 2.0 Proceeds from the Sales or Paydowns of Investments: Equity Securities 71.9 28.5 2.2 Purchases of Investments: Fixed Maturities (40.3) — — Equity Securities (5.6) (48.7) (21.0) Net Sales (Purchases) of Short-term Investments 138.9 411.3 (415.7) Acquisition of Business — (370.9) — Other (3.1) — — Net Cash (Used in) Provided by Investing Activities (375.9) 165.0 (494.5) Financing Activities: Notes Payable Proceeds: Proceeds from Issuance of 3.800% Senior Notes due February 23, 2032 396.3 — — Issuance Fees from Issuance of 3.800% Senior Notes due February 23, 2032 (1.2) — — Proceeds from Issuance of 5.875% Fixed-Rate Reset Junior Subordinated Debentures due 2062 145.6 — — Issuance Fees from Issuance of 5.875% Fixed-Rate Reset Junior Subordinated Debentures due 2062 (0.9) — — Proceeds from Issuance of 2.400% Senior Notes due September 30, 2030 — — 396.8 Issuance Fees from Issuance of 2.400% Senior Notes due September 30, 2030 — — (1.2) Repayments of Long-term Debt — (50.0) — Proceeds from Shares Issued under Employee Stock Purchase Plan 4.9 5.4 4.4 Common Stock Repurchases — (161.7) (110.4) Dividends and Dividend Equivalents Paid (79.7) (80.6) (78.9) Other 0.6 3.7 5.4 Net Cash Provided by (Used in) Financing Activities 465.6 (283.2) 216.1 Increase (Decrease) in Cash 38.6 (18.3) (15.8) Cash, Beginning of Year 27.7 46.0 61.8 Cash, End of Year $ 66.3 $ 27.7 $ 46.0 See Accompanying Report of Independent Registered Public Accounting Firm.
Lease, Cost	The following table presents operating lease right-of-use assets and lease liabilities. (Dollars in Millions) 2022 2021 Operating Lease Right-of-Use Assets $ 45.1 $ 64.4 Operating Lease Liabilities 72.6 84.8 Lease expenses are primarily included in insurance expenses in the Consolidated Statements of (Loss) Income. Additional information regarding the Company’s operating leases is presented below. (Dollars in Millions) 2022 2021 Lease Cost: Amortization of Right-of-Use Assets - Finance Leases $ — $ 0.2 Operating Lease Cost 21.3 22.3 Variable Lease Cost 0.3 0.2 Short-Term Lease Cost (1) 3.8 5.0 Total Lease Expense $ 25.4 $ 27.7 Less: Sub-Lease Income 0.1 0.3 Total Lease Cost $ 25.3 $ 27.4 (1) - Leases with an initial term of twelve months or less are not recorded on the Consolidated Balance Sheets. DOLLARS IN MILLIONS 2022 2021 Operating Lease Right-of-Use Assets $ 12.2 $ 12.8 Operating Lease Liabilities 24.4 25.8 Supplemental cash flow information related to Kemper’s operating leases for the year-ended December 31, 2022 and December 31, 2021 respectively are presented follows. DOLLARS IN MILLIONS 2022 2021 Operating Cash Flows from Operating Leases (Fixed Payments) $ 2.4 $ 2.2 Operating Cash Flows from Operating Leases (Liability Reduction) 1.4 1.1 Right-of-Use Assets Obtained in Exchange for New Operating Lease Liabilities — — NOTE 4. LEASES (Continued) Significant judgments and assumptions for determining lease asset and liability as December 31, 2022 and December 31, 2021 respectively are presented below. DOLLARS IN MILLIONS 2022 2021 Weighted-average Remaining Lease Term - Operating Leases 11.0 years 11.9 years Weighted-average Discount Rate - Operating Leases 4.0 % 4.0 %
Schedule of Future Minimum Lease Payments for Operating Leases	Future minimum operating lease payments at December 31, 2022 were: DOLLARS IN MILLIONS Operating 2023 $ 2.4 2024 2.5 2025 2.6 2026 2.6 2027 2.7 2028 and Thereafter 17.7 Total Future Payments $ 30.5 Less Discount 6.1 Present Value of Minimum Lease Payments $ 24.4

Summary of Accounting Policie_3

Summary of Accounting Policies and Accounting Changes - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Jan. 01, 2023
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Policyholders’ Benefits and Incurred Losses and Loss Adjustment Expenses	$ 4,504.4	$ 4,600.8	$ 3,323.6
Reinsurance recoverables	39.6	41.9
Ceded reinsurance reserves	41.2	42.1
Receivables from limited liability investments or partnership investments	35.2	2.6
Accrued investment income	94.3	79.6
Equity Securities at Modified Cost	586.5	448.1
Definite-lived intangible assets	716.8	706.4
Finite-lived intangible assets, net	267	292.9
Retained Earnings	1,380.1	1,762.5
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(2,443.2)	$ (4,007.7)
Minimum | Cumulative Effect, Period of Adoption, Adjustment | Forecast
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained Earnings				$ 130
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest				1,000
Maximum | Cumulative Effect, Period of Adoption, Adjustment | Forecast
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained Earnings				230
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest				$ 1,100
Life Insurance | Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Interest rate assumptions		3%
Life Insurance | Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Interest rate assumptions		7%
Value of Business Acquired
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Definite-lived intangible assets	237.5	$ 237.5
Finite-lived intangible assets, net	15.4	19
Customer Relationships
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Definite-lived intangible assets	43.8	43.8
Finite-lived intangible assets, net	2.7	5.7
Agent Relationships
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Definite-lived intangible assets	81.6	81.6
Finite-lived intangible assets, net	$ 50.6	$ 58

Income from Continuing Operat_3

Income from Continuing Operations Per Unrestricted Share - Reconciliation of Numerator and Denominator in Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net (Loss) Income	$ (301.2)	$ (120.5)	$ 409.9
Dilutive Effect on Income of Equity-based Compensation Equivalent Shares	$ 0	$ 0	$ 0
Weighted-average Unrestricted Shares Outstanding (in shares)	63,825,500	64,264,400	65,636,100
Equity-based Compensation Equivalent Shares (in shares)	0	0	1,093,700
Weighted-average Unrestricted Shares and Equivalent Shares Outstanding Assuming Dilution (in shares)	63,825,500	64,264,400	66,729,800
Basic Income from Continuing Operations Per Unrestricted Share (in dollars per share)			$ 6.24
Diluted Income from Continuing Operations Per Unrestricted Share (in dollars per share)			$ 6.14
Common Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net (Loss) Income	$ (301.2)	$ (120.5)	$ 409.5
Diluted Net (Loss) Income Attributed to Unrestricted Shares	(301.2)	(120.5)	409.5
Participating Awards
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net (Loss) Income	$ 0	$ 0	$ 0.4

Income from Continuing Operat_4

Income from Continuing Operations Per Unrestricted Share - Antidilutive Securities Excluded from Computation of Earnings Per Share (Details) - shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	2,410,700	2,180,100	874,500
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	2,410,700	2,180,100	874,500

Acquisition of Business - Narra

Acquisition of Business - Narrative (Details) - USD ($)			12 Months Ended
	Apr. 01, 2021	Nov. 23, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Repayments of secured debt			$ 138,200,000	$ 394,000,000	$ 304,800,000
Goodwill			1,300,300,000	1,312,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	$ 370,900,000
Business Acquisition, Pro Forma Revenue			5,576,800,000	5,884,200,000
Business Acquisition, Pro Forma Total Expenses			5,968,800,000	6,109,500,000
Business Acquisition, Pro Forma Net Income (Loss)			(392,000,000)	(225,300,000)
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax			$ (303,100,000)	$ (105,100,000)
License
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets	2,500,000
Customer Relationships
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	4,800,000
Agent Relationships
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	7,200,000
Software Development
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	6,500,000
Trade Names
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	1,800,000
Property and Casualty Insurance Reserves
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	(211,100,000)
Unearned Premium
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	(177,800,000)
Deferred Income Tax Liabilities
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	(7,800,000)
Other Liabilities
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	(51,000,000)
Interest on Fixed Income Securities
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities	151,200,000
Dividends on Equity Securities Excluding Alternative Investments
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities	82,400,000
Short-term Investments
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities	100,100,000
Cash
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	54,300,000
Premiums Receivable
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	148,900,000
Receivables Other than Premium Receivable
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	2,000,000
Goodwill
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	198,000,000
Current Income Tax Asset
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	300,000
Other Assets
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	81,400,000
American Access Casualty Company
Business Acquisition [Line Items]
Total consideration transferred		$ 370,900,000
Present Value of Future Insurance Profits, Net	$ 42,900,000
American Access Casualty Company | Minimum
Business Acquisition [Line Items]
Estimated useful lives	1 year
American Access Casualty Company | Maximum
Business Acquisition [Line Items]
Estimated useful lives	8 years

Acquisition of Business - Purch

Acquisition of Business - Purchase Price Allocation (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Apr. 01, 2021
Business Acquisition [Line Items]
Goodwill	$ 1,300.3	$ 1,312
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net			$ 370.9
Property and Casualty Insurance Reserves
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities			(211.1)
Unearned Premium
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities			(177.8)
Deferred Income Tax Liabilities
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities			(7.8)
Other Liabilities
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities			(51)
Interest on Fixed Income Securities
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities			151.2
Dividends on Equity Securities Excluding Alternative Investments
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities			82.4
Short-term Investments
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities			100.1
Cash
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets			54.3
Premiums Receivable
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets			148.9
Receivables Other than Premium Receivable
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets			2
Goodwill
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets			198
Current Income Tax Asset
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets			0.3
Other Assets
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets			$ 81.4

Dispositions - Narrative (Detai

Dispositions - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2022	Dec. 01, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration	$ 90	$ 90
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Reserve National Insurance Company
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on disposal pre-tax		2
Loss on disposal net of tax		$ 1.6
Total impairment loss			$ 11.4
Goodwill impairment	$ 6.9

Dispositions - Assets and Liabi

Dispositions - Assets and Liabilities Included in Disposition (Details) - Disposal Group, Disposed of by Sale, Not Discontinued Operations - Reserve National Insurance Company - USD ($) $ in Millions	Dec. 31, 2022	Dec. 01, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: $43.3)		$ 36.7
Fixed maturities, amortized cost	$ 43.3
Short-term Investments at Cost which Approximates Fair Value		0.7
Loans to Policyholders		0.7
Total Investments		38.1
Cash		81
Receivables from Policyholders		2.6
Other Receivables		1.6
Deferred Policy Acquisition Costs		38.7
Goodwill		0.3
Other Assets		3.1
Investment in Subsidiaries		0.2
Total Assets		165.6
Health Insurance Reserves		48.2
Unearned Premiums		10.8
Deferred Income Tax Liabilities		1.8
Accrued Expenses and Other Liabilities		13.8
Total Liabilities		$ 74.6

Business Segments - Narrative (

Business Segments - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) segment	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Segment Reporting [Abstract]
Number of operating segments | segment	3
Allocated corporate expenses | $	$ 127.8	$ 121.9	$ 109.5

Business Segments - Segment Ass

Business Segments - Segment Assets (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Total Assets	$ 13,364	$ 14,916.5
Specialty Property & Casualty Insurance
Segment Reporting Information [Line Items]
Total Assets	5,492.3	5,936.5
Preferred Property & Casualty Insurance
Segment Reporting Information [Line Items]
Total Assets	1,175.3	1,230.1
Life & Health Insurance
Segment Reporting Information [Line Items]
Total Assets	4,850.8	6,062.6
Corporate and Other, Net
Segment Reporting Information [Line Items]
Total Assets	$ 1,845.6	$ 1,687.3

Business Segments - Earned Prem

Business Segments - Earned Premiums by Product Line (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Entity-Wide Information, Revenue from External Customer [Line Items]
Earned Premiums	$ 5,266.3	$ 5,253.7	$ 4,672.2
Operating Segments | Specialty Property & Casualty Insurance
Entity-Wide Information, Revenue from External Customer [Line Items]
Earned Premiums	4,046.4	3,948.5	3,335.3
Operating Segments | Specialty Property & Casualty Insurance | Personal Automobile
Entity-Wide Information, Revenue from External Customer [Line Items]
Earned Premiums	3,496.7	3,533.7	3,031.3
Operating Segments | Specialty Property & Casualty Insurance | Commercial Automobile
Entity-Wide Information, Revenue from External Customer [Line Items]
Earned Premiums	549.7	414.8	304
Operating Segments | Preferred Property & Casualty Insurance
Entity-Wide Information, Revenue from External Customer [Line Items]
Earned Premiums	595.5	651.7	688.2
Operating Segments | Preferred Property & Casualty Insurance | Preferred Automobile
Entity-Wide Information, Revenue from External Customer [Line Items]
Earned Premiums	363.7	410.5	431.7
Operating Segments | Preferred Property & Casualty Insurance | Homeowners
Entity-Wide Information, Revenue from External Customer [Line Items]
Earned Premiums	200	207.3	220.7
Operating Segments | Preferred Property & Casualty Insurance | Other Personal Lines
Entity-Wide Information, Revenue from External Customer [Line Items]
Earned Premiums	31.8	33.9	35.8
Operating Segments | Life & Health Insurance
Entity-Wide Information, Revenue from External Customer [Line Items]
Earned Premiums	624.4	653.5	648.7
Operating Segments | Life & Health Insurance | Life
Entity-Wide Information, Revenue from External Customer [Line Items]
Earned Premiums	405.7	401.7	385.7
Operating Segments | Life & Health Insurance | Accident & Health
Entity-Wide Information, Revenue from External Customer [Line Items]
Earned Premiums	168.2	189.9	199.3
Operating Segments | Life & Health Insurance | Property
Entity-Wide Information, Revenue from External Customer [Line Items]
Earned Premiums	$ 50.5	$ 61.9	$ 63.7

Business Segments - Segment Rev

Business Segments - Segment Revenues (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Earned Premiums	$ 5,266.3	$ 5,253.7	$ 4,672.2
Net Investment Income	422.6	427.3	348.2
Other Income	9.2	4.8	94.6
Total Revenues	5,576.8	5,793	5,205.7
(Loss) Income from Change in Fair Value of Equity and Convertible Securities	(79.9)	114.6	72.1
Net Realized Investment Gains	4.3	64.8	38.1
Net Impairment Losses Recognized in Earnings	(25.8)	(11)	(19.5)
Change in Value of Alternative Energy Partnership Investments	(19.9)	(61.2)	0
Operating Segments
Segment Reporting Information [Line Items]
Total Revenues	5,658.7	5,619.2	5,025.3
Operating Segments | Specialty Property & Casualty Insurance
Segment Reporting Information [Line Items]
Earned Premiums	4,046.4	3,948.5	3,335.3
Net Investment Income	140.7	152.5	114.1
Other Income	6	4.1	1.8
Total Revenues	4,183.2	4,076.1	3,451.2
Change in Value of Alternative Energy Partnership Investments	(9.9)	(29)	0
Operating Segments | Preferred Property & Casualty Insurance
Segment Reporting Information [Line Items]
Earned Premiums	595.5	651.7	688.2
Net Investment Income	49.7	68.6	37.7
Other Income	0	0	0.1
Total Revenues	640.5	704	726
Change in Value of Alternative Energy Partnership Investments	(4.7)	(16.3)	0
Operating Segments | Life & Health Insurance
Segment Reporting Information [Line Items]
Earned Premiums	624.4	653.5	648.7
Net Investment Income	216.5	202.7	198.8
Other Income	(0.6)	(1.3)	0.6
Total Revenues	835	839.1	848.1
Change in Value of Alternative Energy Partnership Investments	(5.3)	(15.8)	0
Segment Reconciling Items
Segment Reporting Information [Line Items]
(Loss) Income from Change in Fair Value of Equity and Convertible Securities	(79.9)	114.6	72.1
Net Realized Investment Gains	4.3	64.8	38.1
Net Impairment Losses Recognized in Earnings	(25.8)	(11)	(19.5)
Other	$ 19.5	$ 5.4	$ 89.7

Business Segments - Segment Ope

Business Segments - Segment Operating Profit (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Segment Operating Profit (Loss)	$ (221.5)	$ (369.8)	$ 546.8
(Loss) Income from Change in Fair Value of Equity and Convertible Securities	(79.9)	114.6	72.1
Net Realized Investment Gains	4.3	64.8	38.1
Net Impairment Losses Recognized in Earnings	(25.8)	(11)	(19.5)
Loss from Early Extinguishment of Debt	(3.7)	0	0
(Loss) Income before Income Taxes	(389.5)	(245.3)	510.1
Operating Segments
Segment Reporting Information [Line Items]
Segment Operating Profit (Loss)	(173.8)	(321.4)	493.9
Operating Segments | Specialty Property & Casualty Insurance
Segment Reporting Information [Line Items]
Segment Operating Profit (Loss)	(196.9)	(292.1)	420.9
Operating Segments | Preferred Property & Casualty Insurance
Segment Reporting Information [Line Items]
Segment Operating Profit (Loss)	(36.4)	(39.8)	1.8
Operating Segments | Life & Health Insurance
Segment Reporting Information [Line Items]
Segment Operating Profit (Loss)	59.5	10.5	71.2
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Segment Operating Profit (Loss)	(47.7)	(48.4)	52.9
Partial Satisfaction of Judgment	0	0	89.4
Other	(47.7)	(48.4)	(36.5)
Segment Reconciling Items
Segment Reporting Information [Line Items]
(Loss) Income from Change in Fair Value of Equity and Convertible Securities	(79.9)	114.6	72.1
Net Realized Investment Gains	4.3	64.8	38.1
Net Impairment Losses Recognized in Earnings	(25.8)	(11)	(19.5)
Acquisition and Disposition Related Transaction, Integration, Restructuring and Other Costs	(62.9)	(43.9)	(63.3)
Pension Obligation Settlement Costs	$ 0	$ 0	$ (64.1)

Business Segments - Segment Net

Business Segments - Segment Net Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Segment Net Operating Income (Loss)	$ (156.9)	$ (218.8)	$ 438.8
Loss from Early Extinguishment of Debt	(2.9)	0	0
Net Income (Loss)	(301.2)	(120.5)	409.9
Pension Obligation Settlement Costs	0	0	(50.6)
Operating Segments
Segment Reporting Information [Line Items]
Segment Net Operating Income (Loss)	(119.1)	(180.4)	401.4
Operating Segments | Specialty Property & Casualty Insurance
Segment Reporting Information [Line Items]
Segment Net Operating Income (Loss)	(147.4)	(196.1)	337.9
Operating Segments | Preferred Property & Casualty Insurance
Segment Reporting Information [Line Items]
Segment Net Operating Income (Loss)	(25.9)	(12.5)	3.5
Operating Segments | Life & Health Insurance
Segment Reporting Information [Line Items]
Segment Net Operating Income (Loss)	54.2	28.2	60
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Segment Net Operating Income (Loss)	(37.8)	(38.4)	37.4
Partial Satisfaction of Judgment	0	0	70.6
Other	(37.8)	(38.4)	(33.2)
Segment Reconciling Items
Segment Reporting Information [Line Items]
Change in Fair Value of Equity and Convertible Securities	(63.1)	90.5	57
Net Realized Investment Gains	3.4	51.2	30.1
Impairment Losses	(20.4)	(8.7)	(15.4)
Acquisition and Disposition Related Transaction, Integration, Restructuring and Other Costs	$ (61.3)	$ (34.7)	$ (50)

Business Segments - Amortizatio

Business Segments - Amortization of Deferred Policy Acquisition Costs By Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Amortization of deferred policy acquisition costs	$ 705.3	$ 684.3	$ 641.8

Property and Casualty Insuran_3

Property and Casualty Insurance Reserves - Short-duration Insurance Contracts, Claims Development (Details) $ in Millions	Dec. 31, 2022 USD ($) claim	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Loss and Allocated LAE Reserves, Net of Reinsurance	$ 2,507.8
Specialty Personal Automobile Insurance—Liability
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	7,822.8
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	6,200.3
Outstanding Loss and Allocated LAE Reserves on Accident Years before 2015, Net of Reinsurance	20
Loss and Allocated LAE Reserves, Net of Reinsurance	1,642.5
Specialty Personal Automobile Insurance—Physical Damage
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	3,798.3
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	3,737.3
Outstanding Loss and Allocated LAE Reserves on Accident Years before 2015, Net of Reinsurance	1.7
Loss and Allocated LAE Reserves, Net of Reinsurance	62.7
Commercial Automobile Insurance—Liability
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	927
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	529.3
Outstanding Loss and Allocated LAE Reserves on Accident Years before 2015, Net of Reinsurance	16.6
Loss and Allocated LAE Reserves, Net of Reinsurance	414.3
Commercial Automobile Insurance—Physical Damage
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	208.9
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	201.1
Outstanding Loss and Allocated LAE Reserves on Accident Years before 2015, Net of Reinsurance	0.5
Loss and Allocated LAE Reserves, Net of Reinsurance	8.3
Preferred Personal Automobile Insurance—Liability
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	861.8
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	615.7
Outstanding Loss and Allocated LAE Reserves on Accident Years before 2015, Net of Reinsurance	8.7
Loss and Allocated LAE Reserves, Net of Reinsurance	254.8
Preferred Personal Automobile Insurance—Physical Damage
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	562.8
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	560
Outstanding Loss and Allocated LAE Reserves on Accident Years before 2015, Net of Reinsurance	0
Loss and Allocated LAE Reserves, Net of Reinsurance	2.8
Homeowners Insurance
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	784.9
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	710.1
Outstanding Loss and Allocated LAE Reserves on Accident Years before 2015, Net of Reinsurance	3.5
Loss and Allocated LAE Reserves, Net of Reinsurance	78.3
2015 | Specialty Personal Automobile Insurance—Liability
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	1,316.1	$ 1,314.5	$ 1,307.8	$ 1,310.5	$ 1,324
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 12.7
Cumulative Number of Reported Claims | claim	509,081
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 1,292.6	1,265.5	1,211.8	1,050.8	541.3
2015 | Specialty Personal Automobile Insurance—Physical Damage
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	548.1	547.8	548	548.6	558.9
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ (0.2)
Cumulative Number of Reported Claims | claim	309,625
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 548.2	548.3	549	553.1	509.4
2015 | Commercial Automobile Insurance—Liability
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	111.2	110.9	113	116.5	123.2
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 3.9
Cumulative Number of Reported Claims | claim	20,213
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 104.3	98.1	88.1	68.8	36.8
2015 | Commercial Automobile Insurance—Physical Damage
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	23.6	23.6	23.6	23.5	23.6
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 0.1
Cumulative Number of Reported Claims | claim	9,570
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 23.6	23.6	23.6	23.6	21.7
2015 | Preferred Personal Automobile Insurance—Liability
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	163.4	163.4	161.7	156.3	157.6
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 1.1
Cumulative Number of Reported Claims | claim	31,701
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 155.8	147.4	132.7	107.6	55.5
2015 | Preferred Personal Automobile Insurance—Physical Damage
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	110.3	110.4	110.4	111	113.9
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 0.1
Cumulative Number of Reported Claims | claim	61,733
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 110.2	110.3	110.4	111.4	107.2
2015 | Homeowners Insurance
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	185	185.3	183.6	183	185.9
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 4.5
Cumulative Number of Reported Claims | claim	16,065
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 183.6	183.1	180	180.2	$ 127.4
2016 | Specialty Personal Automobile Insurance—Liability
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	1,508.3	1,506.1	1,494.7	1,461.5
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 27.2
Cumulative Number of Reported Claims | claim	548,271
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 1,452.3	1,382	1,200.7	567.3
2016 | Specialty Personal Automobile Insurance—Physical Damage
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	629.7	629.6	630.3	624.3
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ (9.7)
Cumulative Number of Reported Claims | claim	324,516
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 630	630.6	634.8	570.8
2016 | Commercial Automobile Insurance—Liability
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	128.1	126.6	126.1	128.4
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 7.5
Cumulative Number of Reported Claims | claim	19,624
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 113.1	99.5	75.7	32.4
2016 | Commercial Automobile Insurance—Physical Damage
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	26.8	26.9	27.1	26
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ (0.5)
Cumulative Number of Reported Claims | claim	9,311
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 26.8	26.8	26.9	23
2016 | Preferred Personal Automobile Insurance—Liability
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	201.8	200	195.5	172.2
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 2.7
Cumulative Number of Reported Claims | claim	34,586
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 181.1	160.8	127.9	62.7
2016 | Preferred Personal Automobile Insurance—Physical Damage
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	125.8	125.9	125.8	126.4
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 0.4
Cumulative Number of Reported Claims | claim	67,101
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 125.4	125.6	126.5	120.7
2016 | Homeowners Insurance
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	162.8	163.1	161.8	162.9
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 2.1
Cumulative Number of Reported Claims | claim	14,558
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 159.5	157.7	150.4	$ 111.1
2017 | Specialty Personal Automobile Insurance—Liability
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	1,407.8	1,406.4	1,401.2
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 52.5
Cumulative Number of Reported Claims | claim	476,238
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 1,287.8	1,107.6	555.2
2017 | Specialty Personal Automobile Insurance—Physical Damage
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	659.5	659.5	650.5
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ (1.3)
Cumulative Number of Reported Claims | claim	296,417
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 659.7	663.8	585.5
2017 | Commercial Automobile Insurance—Liability
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	154	152	140.5
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 15.3
Cumulative Number of Reported Claims | claim	19,581
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 111.7	87.6	37
2017 | Commercial Automobile Insurance—Physical Damage
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	32.1	32.2	31.9
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 0.1
Cumulative Number of Reported Claims | claim	11,039
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 32	31.9	26.2
2017 | Preferred Personal Automobile Insurance—Liability
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	151.8	153.6	148.9
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 7
Cumulative Number of Reported Claims | claim	24,746
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 117.7	92.8	44.4
2017 | Preferred Personal Automobile Insurance—Physical Damage
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	97.9	98	96.1
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 0.3
Cumulative Number of Reported Claims | claim	47,639
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 97.6	98.4	90.9
2017 | Homeowners Insurance
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	144.6	149.8	157
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 3
Cumulative Number of Reported Claims | claim	14,036
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 137.4	130.8	$ 94.6
2018 | Specialty Personal Automobile Insurance—Liability
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	1,824.7	1,856.9
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 152.4
Cumulative Number of Reported Claims | claim	583,773
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 1,429.4	657.1
2018 | Specialty Personal Automobile Insurance—Physical Damage
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	967.5	958
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ (12.2)
Cumulative Number of Reported Claims | claim	361,716
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 977.5	890.1
2018 | Commercial Automobile Insurance—Liability
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	228.6	225.6
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 42.2
Cumulative Number of Reported Claims | claim	27,143
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 128	50.8
2018 | Commercial Automobile Insurance—Physical Damage
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	51.9	52.4
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ (0.1)
Cumulative Number of Reported Claims | claim	17,687
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 51.9	43.3
2018 | Preferred Personal Automobile Insurance—Liability
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	179.8	176.9
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 21.9
Cumulative Number of Reported Claims | claim	27,449
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 106.1	50.3
2018 | Preferred Personal Automobile Insurance—Physical Damage
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	117.9	118.5
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ (0.2)
Cumulative Number of Reported Claims | claim	53,626
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 118.1	113.1
2018 | Homeowners Insurance
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	149.8	149.9
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 7.8
Cumulative Number of Reported Claims | claim	13,590
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 132.6	$ 100.6
2019 | Specialty Personal Automobile Insurance—Liability
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	1,765.9
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 552.2
Cumulative Number of Reported Claims | claim	440,324
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 738.2
2019 | Specialty Personal Automobile Insurance—Physical Damage
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	993.5
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 25.8
Cumulative Number of Reported Claims | claim	297,398
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 921.9
2019 | Commercial Automobile Insurance—Liability
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	305.1
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 153
Cumulative Number of Reported Claims | claim	28,674
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 72.2
2019 | Commercial Automobile Insurance—Physical Damage
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	74.5
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 2
Cumulative Number of Reported Claims | claim	20,280
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 66.8
2019 | Preferred Personal Automobile Insurance—Liability
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	165
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 56.1
Cumulative Number of Reported Claims | claim	22,833
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 55
2019 | Preferred Personal Automobile Insurance—Physical Damage
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	110.9
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ (2.7)
Cumulative Number of Reported Claims | claim	45,908
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 108.7
2019 | Homeowners Insurance
Claims Development [Line Items]
Incurred Losses and Allocated LAE, Net of Reinsurance For the Years Ended December 31,	142.7
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 10
Cumulative Number of Reported Claims | claim	10,304
Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Cumulative Paid Losses and Allocated LAE, Net	$ 97

Property and Casualty Insuran_4

Property and Casualty Insurance Reserves - Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability (Details) $ in Millions	Dec. 31, 2022 USD ($)
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Property and Casualty Insurance Reserves, Net of Reinsurance	$ 2,507.8
Reinsurance Recoverables on Unpaid Losses and Allocated LAE	39.6
Unallocated LAE	209.5
Property and Casualty Insurance Reserves, Gross of Reinsurance	2,756.9
Specialty Personal Automobile Insurance—Liability
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Property and Casualty Insurance Reserves, Net of Reinsurance	1,642.5
Reinsurance Recoverables on Unpaid Losses and Allocated LAE	1.5
Specialty Personal Automobile Insurance—Physical Damage
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Property and Casualty Insurance Reserves, Net of Reinsurance	62.7
Commercial Automobile Insurance—Liability
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Property and Casualty Insurance Reserves, Net of Reinsurance	414.3
Reinsurance Recoverables on Unpaid Losses and Allocated LAE	19.2
Specialty Personal Automobile Insurance—Physical Damage
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Reinsurance Recoverables on Unpaid Losses and Allocated LAE	0
Commercial Automobile Insurance—Physical Damage
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Property and Casualty Insurance Reserves, Net of Reinsurance	8.3
Reinsurance Recoverables on Unpaid Losses and Allocated LAE	0
Preferred Personal Automobile Insurance—Liability
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Property and Casualty Insurance Reserves, Net of Reinsurance	254.8
Reinsurance Recoverables on Unpaid Losses and Allocated LAE	10.1
Preferred Personal Automobile Insurance—Physical Damage
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Property and Casualty Insurance Reserves, Net of Reinsurance	2.8
Reinsurance Recoverables on Unpaid Losses and Allocated LAE	0
Homeowners Insurance
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Property and Casualty Insurance Reserves, Net of Reinsurance	78.3
Reinsurance Recoverables on Unpaid Losses and Allocated LAE	4.9
Other
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Property and Casualty Insurance Reserves, Net of Reinsurance	44.1
Reinsurance Recoverables on Unpaid Losses and Allocated LAE	$ 3.9

Property and Casualty Insuran_5

Property and Casualty Insurance Reserves - Historical Claims Duration (Details)	Dec. 31, 2022
Specialty Personal Automobile Insurance—Liability
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]
Year 1	39.20%
Year 2	79.10%
Year 3	91.70%
Year 4	96.20%
Year 5	98.20%
Specialty Personal Automobile Insurance—Physical Damage
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]
Year 1	91.40%
Year 2	100.90%
Year 3	100.10%
Year 4	100%
Year 5	100%
Commercial Automobile Insurance—Liability
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]
Year 1	25.70%
Year 2	58.50%
Year 3	76.50%
Year 4	88.30%
Year 5	93.80%
Commercial Automobile Insurance—Physical Damage
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]
Year 1	86.40%
Year 2	99.80%
Year 3	99.80%
Year 4	99.90%
Year 5	99.90%
Preferred Personal Automobile Insurance—Liability
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]
Year 1	31.10%
Year 2	62.30%
Year 3	79.50%
Year 4	90%
Year 5	95.30%
Preferred Personal Automobile Insurance—Physical Damage
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]
Year 1	96%
Year 2	100.50%
Year 3	99.80%
Year 4	99.80%
Year 5	99.90%
Homeowners
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]
Year 1	67.50%
Year 2	92.20%
Year 3	96.40%
Year 4	98.50%
Year 5	99.30%

Property and Casualty Insuran_6

Property and Casualty Insurance Reserves - Reserve Activity (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Gross of Reinsurance at Beginning of Year	$ 2,772.7
Less Reinsurance Recoverables at Beginning of Year	41.9
Incurred Losses and LAE related to:
Incurred Losses and LAE Related to Prior Years	(14.6)	$ 106.7	$ 36.4
Paid Losses and LAE related to:
Plus Reinsurance Recoverables at End of Year	39.6	41.9
Property and Casualty Insurance Reserves, Gross of Reinsurance at End of Year	2,756.9	2,772.7
Property and Liability Insurance
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Gross of Reinsurance at Beginning of Year	2,772.7	1,982.5	1,969.8
Less Reinsurance Recoverables at Beginning of Year	41.9	50.1	65.6
Property and Casualty Insurance Reserves, Net of Reinsurance at Beginning of Year	2,730.8	1,932.4	1,904.2
Property and Casualty Insurance Reserves Acquired, Net of Reinsurance	0	211.1	0
Incurred Losses and LAE related to:
Incurred Losses and LAE Related to Current Year	4,103.3	4,052.7	2,873.6
Incurred Losses and LAE Related to Prior Years	(14.6)	106.7	36.4
Total Incurred Losses and LAE	4,088.7	4,159.4	2,910
Paid Losses and LAE related to:
Paid Losses and LAE Related to Current Year	2,460.5	2,303.4	1,679.1
Paid Losses and LAE Related to Prior Years	1,641.7	1,268.7	1,202.7
Total Paid Losses and LAE	4,102.2	3,572.1	2,881.8
Property and Casualty Insurance Reserves, Net of Reinsurance at End of Year	2,717.3	2,730.8	1,932.4
Plus Reinsurance Recoverables at End of Year	39.6	41.9	50.1
Property and Casualty Insurance Reserves, Gross of Reinsurance at End of Year	$ 2,756.9	$ 2,772.7	$ 1,982.5

Property and Casualty Insuran_7

Property and Casualty Insurance Reserves - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and LAE related to prior year (favorable) adverse development	$ (14.6)	$ 106.7	$ 36.4
Reinsurance recoverables	39.6	41.9
Premium Receivable, Credit Loss Expense (Reversal)	48	50.5
Premium Receivable, Allowance for Credit Loss, Writeoff	$ (48.5)	(57.8)
Actuary estimate period used for ultimate and LAE	10 years
Personal Automobile
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and LAE related to prior year (favorable) adverse development	$ (17.6)	85.3	28.2
Commercial Lines
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and LAE related to prior year (favorable) adverse development	3.6	12.4	(12.9)
Preferred Automobile
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and LAE related to prior year (favorable) adverse development	1.8	12.1	26.7
Homeowners
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and LAE related to prior year (favorable) adverse development	(7.6)	(6.5)	(2.1)
Other Personal Lines
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and LAE related to prior year (favorable) adverse development	5.2	3.4	(3.5)
Property and Liability Insurance
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and LAE related to prior year (favorable) adverse development	(14.6)	106.7	36.4
Reinsurance recoverables	39.6	41.9	50.1	$ 65.6
Catastrophe
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and LAE related to prior year (favorable) adverse development	$ (4.1)	$ (5.4)	$ 0.2

Insurance Expenses (Details)

Insurance Expenses (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Insurance Expenses [Abstract]
Commissions	$ 724.8	$ 817.6	$ 745.8
General Expenses	358.4	339.5	307.4
Taxes, Licenses and Fees	99.5	104.3	94.2
Total Costs Incurred	1,182.7	1,261.4	1,147.4
Policy Acquisition Costs:
Deferred	(691.5)	(772.6)	(693.4)
Amortized	705.3	684.3	641.8
Net Policy Acquisition Costs Amortized (Deferred)	13.8	(88.3)	(51.6)
Amortization of VOBA	4.1	45	4.7
Insurance Expenses	$ 1,200.6	$ 1,218.1	$ 1,100.5

Investments - Amortized Cost an

Investments - Amortized Cost and Estimated Fair Value of investments (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Amortized cost of fixed maturities	$ 7,811.8	$ 7,358.2
Gross Unrealized Gains	29.4	668.9
Gross Unrealized Losses	(936.8)	(32.7)
Fair Value	6,894.8	7,986.9
Debt Securities, Available-for-sale, Allowance for Credit Loss	9.6	7.5	$ 3.3
United States Government and Government Agencies and Authorities
Debt Securities, Available-for-sale [Line Items]
Amortized cost of fixed maturities	612.5	610.1
Gross Unrealized Gains	1.3	29.2
Gross Unrealized Losses	(85.8)	(1.9)
Fair Value	528	637.4
Debt Securities, Available-for-sale, Allowance for Credit Loss	0	0
States and Political Subdivisions
Debt Securities, Available-for-sale [Line Items]
Amortized cost of fixed maturities	1,797.6	1,752.5
Gross Unrealized Gains	10.3	144.6
Gross Unrealized Losses	(238.3)	(7)
Fair Value	1,568.9	1,890.1
Debt Securities, Available-for-sale, Allowance for Credit Loss	0.7	0
Foreign Governments
Debt Securities, Available-for-sale [Line Items]
Amortized cost of fixed maturities	5	6.7
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(0.9)	(1.2)
Fair Value	4.1	5.5
Debt Securities, Available-for-sale, Allowance for Credit Loss	0	0	0.3
Corporate Bonds and Notes
Debt Securities, Available-for-sale [Line Items]
Amortized cost of fixed maturities	4,030.3	3,929
Gross Unrealized Gains	17.7	481.4
Gross Unrealized Losses	(499.7)	(16)
Fair Value	3,539.4	4,386.9
Debt Securities, Available-for-sale, Allowance for Credit Loss	8.9	7.5	$ 3
Redeemable Preferred Stocks
Debt Securities, Available-for-sale [Line Items]
Amortized cost of fixed maturities	9	7
Gross Unrealized Gains	0	0.4
Gross Unrealized Losses	(1)	0
Fair Value	8	7.4
Debt Securities, Available-for-sale, Allowance for Credit Loss	0
Collateralized Loan Obligations
Debt Securities, Available-for-sale [Line Items]
Amortized cost of fixed maturities	1,014.7	756
Gross Unrealized Gains	0	0.9
Gross Unrealized Losses	(60.8)	(4.8)
Fair Value	953.9	752.1
Debt Securities, Available-for-sale, Allowance for Credit Loss	0	0
Other Mortgage- and Asset-backed
Debt Securities, Available-for-sale [Line Items]
Amortized cost of fixed maturities	342.7	296.9
Gross Unrealized Gains	0.1	12.4
Gross Unrealized Losses	(50.3)	(1.8)
Fair Value	292.5	307.5
Debt Securities, Available-for-sale, Allowance for Credit Loss	$ 0	$ 0

Investments - Narrative (Detail

Investments - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Debt and Equity Securities, FV-NI [Line Items]
Other receivables	$ 262.6	$ 207.3
Mortgage- and Asset-backed Securities Not Due at a Single Maturity Date	1,653.4
Unrealized loss position for 12 months or longer		0
Equity securities, FV-NI, unrealized gain (loss)	6.2
Debt and equity securities, gain (loss), excluding other-than-temporary impairment loss	9.6
Total Assets	13,364	14,916.5
Liabilities	10,920.8	10,908.8
Net (Loss) Income	(301.2)	(120.5)	$ 409.9
Outstanding commitments to fund equity method limited liability investments	95.9
Allowance for credit losses	(9.6)	(7.5)	(3.3)
Additions for Securities for which No Previous Expected Credit Losses were Recognized	7	5.6
Net Increase in Allowance on Securities for which Expected Credit Losses were Previously Recognized	5.8	(1.1)
Write-offs Charged Against Allowance	$ (10.7)	(0.3)
Equity method investments, reported without a reporting lag	0.021
Equity method investments, reported with a one-moth reporting lag	0.062
Alternative Energy Partnership Investments
Debt and Equity Securities, FV-NI [Line Items]
Equity Method Investments	$ 16.3	39.6
Equity Method Investment, Nonconsolidated Investee or Group of Investees
Debt and Equity Securities, FV-NI [Line Items]
Total Assets	5,585.9	5,042.5	3,554.5
Liabilities	2,367	2,074.8	1,602.5
Net (Loss) Income	381.8	585.1	74.9
Investments in Fixed Maturities
Debt and Equity Securities, FV-NI [Line Items]
Other receivables	5.8	0.6
Other liabilities	25.9	12.7
Debt securities, available-for-sale, unrealized loss position, accumulated loss	936.8	32.7
Unrealized loss position for 12 months or longer	308.9	5.9
Government National Mortgage Association Certificates and Obligations (GNMA)
Debt and Equity Securities, FV-NI [Line Items]
Mortgage- and Asset-backed Securities Not Due at a Single Maturity Date	245.6
Federal National Mortgage Association Certificates and Obligations (FNMA)
Debt and Equity Securities, FV-NI [Line Items]
Mortgage- and Asset-backed Securities Not Due at a Single Maturity Date	95.5
Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC)
Debt and Equity Securities, FV-NI [Line Items]
Mortgage- and Asset-backed Securities Not Due at a Single Maturity Date	65.9
Other Non-Governmental Issuers
Debt and Equity Securities, FV-NI [Line Items]
Mortgage- and Asset-backed Securities Not Due at a Single Maturity Date	1,246.5
Foreign Governments
Debt and Equity Securities, FV-NI [Line Items]
Debt securities, available-for-sale, unrealized loss position, accumulated loss	0.9	1.2
Unrealized loss position for 12 months or longer	0.9	0.6
Allowance for credit losses	0	0	(0.3)
Additions for Securities for which No Previous Expected Credit Losses were Recognized	(0.7)	0
Net Increase in Allowance on Securities for which Expected Credit Losses were Previously Recognized	0	(0.3)
Write-offs Charged Against Allowance	0
Corporate Bonds and Notes
Debt and Equity Securities, FV-NI [Line Items]
Debt securities, available-for-sale, unrealized loss position, accumulated loss	499.7	16
Unrealized loss position for 12 months or longer	125.8	2.9
Allowance for credit losses	(8.9)	(7.5)	$ (3)
Additions for Securities for which No Previous Expected Credit Losses were Recognized	6.3	5.6
Net Increase in Allowance on Securities for which Expected Credit Losses were Previously Recognized	5.8	(0.8)
Write-offs Charged Against Allowance	(10.7)	(0.3)
Equity Method Limited Liability Investments at Cost Plus Cumulative Undistributed Earnings
Debt and Equity Securities, FV-NI [Line Items]
Other receivables	35.2	1.2
Other liabilities	0
Investment-grade | Investments in Fixed Maturities
Debt and Equity Securities, FV-NI [Line Items]
Debt securities, available-for-sale, unrealized loss position, accumulated loss	904	23.7
Non-investment-grade | Investments in Fixed Maturities
Debt and Equity Securities, FV-NI [Line Items]
Debt securities, available-for-sale, unrealized loss position, accumulated loss	$ 32.8	$ 9
Percentage of unrealized loss position to amortized cost basis of available for sale security average	11%	4%

Investments - Schedule of Contr

Investments - Schedule of Contractual Maturity (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Amortized Cost
Due in One Year or Less	$ 151.1
Due after One Year to Five Years	991.8
Due after Five Years to Ten Years	1,231.1
Due after Ten Years	3,598.8
Mortgage- and Asset-backed Securities Not Due at a Single Maturity Date	1,839
Amortized Cost	7,811.8	$ 7,358.2
Fair Value
Due in One Year or Less	146.9
Due after One Year to Five Years	952.3
Due after Five Years to Ten Years	1,071.9
Due after Ten Years	3,070.3
Mortgage- and Asset-backed Securities Not Due at a Single Maturity Date	1,653.4
Investments in Fixed Maturities	$ 6,894.8	$ 7,986.9

Investments - Aging of Unrealiz

Investments - Aging of Unrealized Losses on Investments in Fixed Maturities (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Unrealized Losses
12 Months or Longer		$ 0
United States Government and Government Agencies and Authorities
Fair Value
Less Than 12 Months	$ 337.3	168.7
12 Months or Longer	126.5	1.2
Total	463.8	169.9
Unrealized Losses
Less Than 12 Months	(49.3)	(1.8)
12 Months or Longer	(36.5)	(0.1)
Total	(85.8)	(1.9)
States and Political Subdivisions
Fair Value
Less Than 12 Months	854.7	385
12 Months or Longer	276.8	1.5
Total	1,131.5	386.5
Unrealized Losses
Less Than 12 Months	(140.6)	(6.9)
12 Months or Longer	(97.7)	(0.1)
Total	(238.3)	(7)
Foreign Governments
Fair Value
Less Than 12 Months	0.1	2.2
12 Months or Longer	2.6	2.6
Total	2.7	4.8
Unrealized Losses
Less Than 12 Months	0	(0.6)
12 Months or Longer	(0.9)	(0.6)
Total	(0.9)	(1.2)
Corporate Bonds and Notes
Fair Value
Less Than 12 Months	2,730.6	596.8
12 Months or Longer	424.4	49.3
Total	3,155	646.1
Unrealized Losses
Less Than 12 Months	(373.9)	(13.1)
12 Months or Longer	(125.8)	(2.9)
Total	(499.7)	(16)
Redeemable Preferred Stocks
Fair Value
Less Than 12 Months	7.7	0.1
12 Months or Longer	0	0
Total	7.7	0.1
Available-for-Sale Securities, Continuous Unrealized Loss Position, Accumulated Loss		0
Unrealized Losses
Less Than 12 Months	(1)	0
12 Months or Longer	0
Total	(1)
Collateralized Loan Obligations
Fair Value
Less Than 12 Months	568.2	250.9
12 Months or Longer	373.9	192.6
Total	942.1	443.5
Unrealized Losses
Less Than 12 Months	(34.2)	(2.6)
12 Months or Longer	(26.6)	(2.2)
Total	(60.8)	(4.8)
Other Mortgage- and Asset-backed
Fair Value
Less Than 12 Months	205.4	100.1
12 Months or Longer	79.5	0
Total	284.9	100.1
Unrealized Losses
Less Than 12 Months	(28.9)	(1.8)
12 Months or Longer	(21.4)	0
Total	(50.3)	(1.8)
Investments in Fixed Maturities
Fair Value
Less Than 12 Months	4,704	1,503.8
12 Months or Longer	1,283.7	247.2
Total	5,987.7	1,751
Unrealized Losses
Less Than 12 Months	(627.9)	(26.8)
12 Months or Longer	(308.9)	(5.9)
Total	$ (936.8)	$ (32.7)

Investments - OTTI losses Recog

Investments - OTTI losses Recognized in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Net Increase in Allowance on Securities for which Expected Credit Losses were Previously Recognized	$ 5.8	$ (1.1)
Debt Securities, Available-for-sale, Allowance for Credit Loss	9.6	7.5	$ 3.3
Foreign Governments
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Net Increase in Allowance on Securities for which Expected Credit Losses were Previously Recognized	0	(0.3)
Debt Securities, Available-for-sale, Allowance for Credit Loss	0	0	0.3
Corporate Bonds and Notes
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Net Increase in Allowance on Securities for which Expected Credit Losses were Previously Recognized	5.8	(0.8)
Debt Securities, Available-for-sale, Allowance for Credit Loss	$ 8.9	$ 7.5	$ 3

Investments - Change in Allowan

Investments - Change in Allowance for Credit Losses on Fixed Maturities Available-for-Sale (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Beginning of the Year	$ 7.5	$ 3.3
Additions for Securities for which No Previous Expected Credit Losses were Recognized	7	5.6
Net Increase in Allowance on Securities for which Expected Credit Losses were Previously Recognized	5.8	(1.1)
Write-offs Charged Against Allowance	(10.7)	(0.3)
End of Year	9.6	7.5
Foreign Governments
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Beginning of the Year	0	0.3
Additions for Securities for which No Previous Expected Credit Losses were Recognized	(0.7)	0
Net Increase in Allowance on Securities for which Expected Credit Losses were Previously Recognized	0	(0.3)
Write-offs Charged Against Allowance	0
End of Year	0	0
Corporate Bonds and Notes
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Beginning of the Year	7.5	3
Additions for Securities for which No Previous Expected Credit Losses were Recognized	6.3	5.6
Net Increase in Allowance on Securities for which Expected Credit Losses were Previously Recognized	5.8	(0.8)
Write-offs Charged Against Allowance	(10.7)	(0.3)
End of Year	8.9	7.5
States and Political Subdivisions
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Beginning of the Year	0
End of Year	$ 0.7	$ 0

Investments - Other Investments

Investments - Other Investments Carrying Values (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Equity Securities at Modified Cost	$ 38.4	$ 32.3
Convertible Securities at Fair Value	43.3	46.4
Real Estate at Depreciated Cost	93.6	94
Mortgage Loans	91.1	96.8
Other	3.5	0.5
Total Investments	$ 269.9	$ 270

Income from Investments - Net I

Income from Investments - Net Investment Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net Investment Income [Line Items]
Investment income	$ 460.7	$ 461.6	$ 382.6
Investment expenses	38.1	34.3	34.4
Net investment income	422.6	427.3	348.2
Proceeds from Sale of Equity Method Investments	0	0	0.4
Realized Investment Gains	41.3	68	48.3
Realized Investment Losses	(38.7)	(3.2)	(10.2)
Equity Method Investment, Realized Gain (Loss) on Disposal	0	(0.4)	0
Interest on Fixed Income Securities
Net Investment Income [Line Items]
Investment income	300.1	277.7	289.8
Dividends on Equity Securities Excluding Alternative Investments
Net Investment Income [Line Items]
Investment income	6.3	15.9	15.4
Total Alternative Investments
Net Investment Income [Line Items]
Investment income	73.4	103.6	27
Equity Method Limited Liability Investments
Net Investment Income [Line Items]
Investment income	31.3	56.7	4.9
Limited Liability Investments Included in Equity Securities
Net Investment Income [Line Items]
Investment income	42.1	46.9	22.1
Short-term Investments
Net Investment Income [Line Items]
Investment income	3.7	1	5.5
Loans to Policyholders
Net Investment Income [Line Items]
Investment income	21.5	21.7	22.1
Real Estate
Net Investment Income [Line Items]
Investment income	10.1	9.3	9.6
Investment expenses	7.9	9.7	8.8
Realized Investment Gains	0	0.1	1.8
Realized Investment Losses	0	(0.4)	0
Other
Net Investment Income [Line Items]
Investment income	7.7	6.7	0.3
Investment expenses	30.2	24.6	25.6
Cash Surrender Value
Net Investment Income [Line Items]
Investment income	37.9	25.7	12.9
Derivative
Net Investment Income [Line Items]
Gains on Hedging Activity	$ 1.7	$ 0	$ 0

Income from Investments - Narra

Income from Investments - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Investment Income, Net [Abstract]
Accrued investment income	$ 94.3	$ 79.6

Income from Investments - Net R

Income from Investments - Net Realized Gains on Sales of Investments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Equity Securities:
Realized Investment Gains	$ 41.3	$ 68	$ 48.3
Realized Investment Losses	(38.7)	(3.2)	(10.2)
Net Realized Investment Gains	4.3	64.8	38.1
Fixed Maturities:
Fixed Maturities:
Gains on Sales	31.6	63.4	40.6
Losses on Sales	(31.9)	(2.1)	(7.9)
Equity Securities
Equity Securities:
Gains on Sales	9.7	4.1	5.9
Losses on Sales	(6.8)	(0.7)	(1.9)
Real Estate
Equity Securities:
Realized Investment Gains	0	0.1	1.8
Realized Investment Losses	0	(0.4)	0
Derivative
Equity Securities:
Gains on Hedging Activity	$ 1.7	$ 0	$ 0

Income from Investments - Net_2

Income from Investments - Net Impairment Losses Recognized in Earnings (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net Investment Income [Line Items]
Total Other-than-temporary Impairment Losses	$ (25.8)	$ (11)	$ (19.5)
Fixed Maturities:
Net Investment Income [Line Items]
Total Other-than-temporary Impairment Losses	(25.8)	(6.4)	(16.7)
Equity Securities
Net Investment Income [Line Items]
Total Other-than-temporary Impairment Losses	0	(4.2)	(2.8)
Real Estate
Net Investment Income [Line Items]
Total Other-than-temporary Impairment Losses	$ 0	$ (0.4)	$ 0

Derivatives (Details)

Derivatives (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Derivative [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax	$ (0.4)	$ 0
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	0	0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	(0.4)	0
Increase (Decrease) in Fair Value of Hedged Item in Interest Rate Fair Value Hedge	1.1	0
Gain (Loss) on Derivative Used in Net Investment Hedge, after Tax	(1.1)	0
Net Gain from Hedging Activity	$ 0	$ 0

Derivatives - Gross Notional Am

Derivatives - Gross Notional Amount and Estimated Fair Value of Derivatives (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Reverse Treasury Lock | Not Designated as Hedging Instrument
Derivative [Line Items]
Gross Notional Amount	$ 100	$ 0
Estimated fair value, assets	1.7	0
Estimated fair value, liabilities	0	0
Interest Swap Lock | Designated as Hedging Instrument
Derivative [Line Items]
Gross Notional Amount	5	0
Estimated fair value, assets	0	0
Estimated fair value, liabilities	$ 0.4	$ 0

Derivatives - Amounts Recognize

Derivatives - Amounts Recognized in Net Realized Investment Gains (Losses) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Derivative [Line Items]
Net Realized Investment Gains	$ 0.5
Reverse Treasury Lock | Not Designated as Hedging Instrument
Derivative [Line Items]
Net Realized Investment Gains	$ 1.7	$ 0

Fair Value Measurements - Valua

Fair Value Measurements - Valuation of Assets Measured at Fair Value (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	$ 6,894.8	$ 7,986.9
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	243.2	830.6
Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Convertible Securities at Fair Value	43.3	46.4
Derivative Instruments Not Designated as Hedges	1.7
Total	7,183	8,863.9
Liabilities, Fair Value Disclosure	(0.4)	0
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Convertible Securities at Fair Value	0	0
Derivative Instruments Not Designated as Hedges	0
Total	117	586.6
Liabilities, Fair Value Disclosure	0	0
Fair Value, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Convertible Securities at Fair Value	43.3	46.4
Derivative Instruments Not Designated as Hedges	1.7
Total	6,646.9	7,700.9
Derivative Instruments Designated as Cash Flow Hedges	(0.4)
Liabilities, Fair Value Disclosure	(0.4)	0
Fair Value, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Convertible Securities at Fair Value	0	0
Derivative Instruments Not Designated as Hedges	0
Total	230	251.4
Liabilities, Fair Value Disclosure	0	0
Investments in Fixed Maturities | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	6,894.8	7,986.9
Investments in Fixed Maturities | Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	103.6	132.8
Investments in Fixed Maturities | Fair Value, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	6,563.3	7,604.2
Investments in Fixed Maturities | Fair Value, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	227.9	249.9
United States Government and Government Agencies and Authorities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	528	637.4
United States Government and Government Agencies and Authorities | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	528	637.4
United States Government and Government Agencies and Authorities | Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	103.6	132.8
United States Government and Government Agencies and Authorities | Fair Value, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	424.4	504.6
United States Government and Government Agencies and Authorities | Fair Value, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	0	0
States and Political Subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	1,568.9	1,890.1
States and Political Subdivisions | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	1,568.9	1,890.1
States and Political Subdivisions | Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	0	0
States and Political Subdivisions | Fair Value, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	1,568.9	1,890.1
States and Political Subdivisions | Fair Value, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	0	0
Foreign Governments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	4.1	5.5
Foreign Governments | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	4.1	5.5
Foreign Governments | Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	0	0
Foreign Governments | Fair Value, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	4.1	5.5
Foreign Governments | Fair Value, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	0	0
Corporate Bonds and Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	3,539.4	4,386.9
Corporate Bonds and Notes | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	3,539.4	4,386.9
Corporate Bonds and Notes | Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	0	0
Corporate Bonds and Notes | Fair Value, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	3,323.4	4,150.1
Corporate Bonds and Notes | Fair Value, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	216	236.8
Redeemable Preferred Stocks
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	8	7.4
Redeemable Preferred Stocks | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	8
Redeemable Preferred Stocks | Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)		0
Redeemable Preferred Stocks | Fair Value, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)		1.3
Redeemable Preferred Stocks | Fair Value, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)		6.1
Collateralized Loan Obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	953.9	752.1
Collateralized Loan Obligations | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	953.9	752.1
Collateralized Loan Obligations | Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	0	0
Collateralized Loan Obligations | Fair Value, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	953.9	752.1
Collateralized Loan Obligations | Fair Value, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	0	0
Other Mortgage- and Asset-backed
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	292.5	307.5
Other Mortgage- and Asset-backed | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	292.5	307.5
Other Mortgage- and Asset-backed | Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	0	0
Other Mortgage- and Asset-backed | Fair Value, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	287.4	300.5
Other Mortgage- and Asset-backed | Fair Value, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	5.1	7
Dividends on Equity Securities Excluding Alternative Investments | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	243.2	830.6
Dividends on Equity Securities Excluding Alternative Investments | Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	13.4	453.8
Dividends on Equity Securities Excluding Alternative Investments | Fair Value, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	38.6	50.3
Dividends on Equity Securities Excluding Alternative Investments | Fair Value, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	2.1	1.5
Preferred Stocks | Finance, Insurance and Real Estate | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	29	34.2
Preferred Stocks | Finance, Insurance and Real Estate | Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0	0
Preferred Stocks | Finance, Insurance and Real Estate | Fair Value, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	29	34.2
Preferred Stocks | Finance, Insurance and Real Estate | Fair Value, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0	0
Preferred Stocks | Other Industries | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	10.8	17.6
Preferred Stocks | Other Industries | Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0	0
Preferred Stocks | Other Industries | Fair Value, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	9.2	16.1
Preferred Stocks | Other Industries | Fair Value, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	1.6	1.5
Common Stock | Finance, Insurance and Real Estate | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0.9	18.9
Common Stock | Finance, Insurance and Real Estate | Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0.9	18.9
Common Stock | Finance, Insurance and Real Estate | Fair Value, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0	0
Common Stock | Finance, Insurance and Real Estate | Fair Value, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0	0
Common Stock | Other Industries | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	1.2	2.9
Common Stock | Other Industries | Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0.3	2.9
Common Stock | Other Industries | Fair Value, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0.4	0
Common Stock | Other Industries | Fair Value, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0.5	0
Bond Exchange Traded Funds | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	12.2	432
Bond Exchange Traded Funds | Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	12.2	432
Bond Exchange Traded Funds | Fair Value, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0
Bond Exchange Traded Funds | Fair Value, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0
Limited Liability Companies and Limited Partnerships | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	189.1	325
Limited Liability Companies and Limited Partnerships | Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0	0
Limited Liability Companies and Limited Partnerships | Fair Value, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0	0
Limited Liability Companies and Limited Partnerships | Fair Value, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0	0
Redeemable Preferred Stock | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)		7.4
Redeemable Preferred Stock | Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	0
Redeemable Preferred Stock | Fair Value, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	1.2
Redeemable Preferred Stock | Fair Value, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	6.8
Designated as Hedging Instrument | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Instruments Designated as Cash Flow Hedges	(0.4)	0
Designated as Hedging Instrument | Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Instruments Designated as Cash Flow Hedges	0	0
Designated as Hedging Instrument | Fair Value, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Instruments Designated as Cash Flow Hedges		0
Designated as Hedging Instrument | Fair Value, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Instruments Designated as Cash Flow Hedges	0	0
Measured at Net Asset Value | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Convertible Securities at Fair Value	0	0
Derivative Instruments Not Designated as Hedges	0
Total	189.1	325
Liabilities, Fair Value Disclosure	0	0
Measured at Net Asset Value | Investments in Fixed Maturities | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	0	0
Measured at Net Asset Value | United States Government and Government Agencies and Authorities | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	0	0
Measured at Net Asset Value | States and Political Subdivisions | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	0	0
Measured at Net Asset Value | Foreign Governments | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	0	0
Measured at Net Asset Value | Corporate Bonds and Notes | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	0	0
Measured at Net Asset Value | Redeemable Preferred Stocks | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)		0
Measured at Net Asset Value | Collateralized Loan Obligations | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	0	0
Measured at Net Asset Value | Other Mortgage- and Asset-backed | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	0	0
Measured at Net Asset Value | Dividends on Equity Securities Excluding Alternative Investments | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	189.1	325
Measured at Net Asset Value | Preferred Stocks | Finance, Insurance and Real Estate | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0	0
Measured at Net Asset Value | Preferred Stocks | Other Industries | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0	0
Measured at Net Asset Value | Common Stock | Finance, Insurance and Real Estate | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0	0
Measured at Net Asset Value | Common Stock | Other Industries | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0	0
Measured at Net Asset Value | Bond Exchange Traded Funds | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0	0
Measured at Net Asset Value | Limited Liability Companies and Limited Partnerships | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	189.1	325
Measured at Net Asset Value | Redeemable Preferred Stock | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed Maturities at Fair Value (Amortized Cost: 2022 - $7,811.8; 2021 - $7,358.2 Allowance for Credit Losses: 2022 - $9.6; 2021 - $7.5)	0
Measured at Net Asset Value | Designated as Hedging Instrument | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Instruments Designated as Cash Flow Hedges	$ 0	$ 0

Fair Value Measurements - Narra

Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unfunded commitments	$ 192.2	$ 300.8
Transfers into Level 3	23.1	19.8
Transfers out of Level 3	$ 5.7	$ 223.6
Fund investments, excluding hedge funds, term	10 years
Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fund investments, excluding hedge funds, option to extend	1 year
Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fund investments, excluding hedge funds, option to extend	2 years
Limited Liability Companies and Limited Partnerships | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unfunded commitments	$ 192.2

Fair Value Measurements - Quant

Fair Value Measurements - Quantitative Information about Significant Unobservable Inputs (Details) - Valuation, Market Approach - Significant Unobservable Inputs (Level 3) $ in Millions	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Other
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Fair Value	$ 56.4	$ 32
Total Level 3 Fixed Maturity Investments
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Fair Value	227.9	249.9
Investment-grade | Investment-grade
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Fair Value	56.5	87.9
Non-investment-grade | Senior Debt
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Fair Value	72.9	76.1
Non-investment-grade | Junior Debt
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Fair Value	$ 42.1	$ 53.9
Measurement Input, Discount Rate | Investment-grade | Investment-grade | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Alternative investment, measurement input	0.046	0.023
Measurement Input, Discount Rate | Investment-grade | Investment-grade | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Alternative investment, measurement input	0.145	0.103
Measurement Input, Discount Rate | Investment-grade | Investment-grade | Weighted-average Yield
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Alternative investment, measurement input	0.092	0.054
Senior Debt | Measurement Input, Discount Rate | Non-investment-grade | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Debt instrument, measurement input	0.046	0.051
Senior Debt | Measurement Input, Discount Rate | Non-investment-grade | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Debt instrument, measurement input	0.367	0.202
Senior Debt | Measurement Input, Discount Rate | Non-investment-grade | Weighted-average Yield
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Debt instrument, measurement input	0.109	0.085
Junior Debt | Measurement Input, Discount Rate | Non-investment-grade | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Debt instrument, measurement input	0.088	0.060
Junior Debt | Measurement Input, Discount Rate | Non-investment-grade | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Debt instrument, measurement input	0.225	0.275
Junior Debt | Measurement Input, Discount Rate | Non-investment-grade | Weighted-average Yield
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Debt instrument, measurement input	0.151	0.150

Fair Value Measurements - Level

Fair Value Measurements - Level 3 Inputs Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at Beginning of Year	$ 251.4	$ 449.2
Total Losses:
Included in Consolidated Statements of (Loss) Income	(12.7)	2.8
Included in Other Comprehensive (Loss) Income	(22.6)	1.4
Purchases	112.5	140.2
Settlements	0	(0.1)
Sales	(116)	(138.3)
Transfers into Level 3	23.1	19.8
Transfers out of Level 3	(5.7)	(223.6)
Balance at End of Year	$ 230	251.4
Fair Value Recurring Basis Unobservable Input Reconciliation, Asset, Gain (Loss), Statement Of Income, Extensible List, Not Disclosed Flag	Included in Consolidated Statements of (Loss) Income
Fair Value, Recurring Basis Unobservable Input Reconciliation, Asset, Gain (Loss) Statement Of Other Comprehensive Income. Extensible List. Not Disclosed Flag	Included in Other Comprehensive (Loss) Income
Fair Value	$ 6,894.8	7,986.9
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	243.2	830.6
Other Short-term Investments, Fair Value Disclosure	278.4	284.1
Policyholder Obligations	701.3	504
FHLB of Chicago | FHLB Funding Agreements | United Insurance
Total Losses:
Policyholder Obligations	601	401.9
Redeemable Preferred Stocks
Total Losses:
Fair Value	8	7.4
United States Government and Government Agencies and Authorities
Total Losses:
Fair Value	528	637.4
States and Political Subdivisions
Total Losses:
Fair Value	1,568.9	1,890.1
Foreign Governments
Total Losses:
Fair Value	4.1	5.5
Corporate Bonds and Notes
Total Losses:
Fair Value	3,539.4	4,386.9
Collateralized Loan Obligations
Total Losses:
Fair Value	953.9	752.1
Other Mortgage- and Asset-backed
Total Losses:
Fair Value	292.5	307.5
Fair Value, Recurring
Total Losses:
Investments, Fair Value Disclosure	7,183	8,863.9
Liabilities, Fair Value Disclosure	0.4	0
Convertible Securities at Fair Value	43.3	46.4
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Total Losses:
Investments, Fair Value Disclosure	117	586.6
Liabilities, Fair Value Disclosure	0	0
Convertible Securities at Fair Value	0	0
Fair Value, Recurring | Significant Other Observable Inputs (Level 2)
Total Losses:
Investments, Fair Value Disclosure	6,646.9	7,700.9
Derivative Instruments Designated as Cash Flow Hedges	0.4
Liabilities, Fair Value Disclosure	0.4	0
Convertible Securities at Fair Value	43.3	46.4
Fair Value, Recurring | Significant Unobservable Inputs (Level 3)
Total Losses:
Investments, Fair Value Disclosure	230	251.4
Liabilities, Fair Value Disclosure	0	0
Convertible Securities at Fair Value	0	0
Fair Value, Recurring | Measured at Net Asset Value
Total Losses:
Investments, Fair Value Disclosure	189.1	325
Liabilities, Fair Value Disclosure	0	0
Convertible Securities at Fair Value	0	0
Fair Value, Recurring | Redeemable Preferred Stocks
Total Losses:
Fair Value	8
Fair Value, Recurring | Redeemable Preferred Stocks | Quoted Prices in Active Markets for Identical Assets (Level 1)
Total Losses:
Fair Value		0
Fair Value, Recurring | Redeemable Preferred Stocks | Significant Other Observable Inputs (Level 2)
Total Losses:
Fair Value		1.3
Fair Value, Recurring | Redeemable Preferred Stocks | Significant Unobservable Inputs (Level 3)
Total Losses:
Fair Value		6.1
Fair Value, Recurring | Redeemable Preferred Stocks | Measured at Net Asset Value
Total Losses:
Fair Value		0
Fair Value, Recurring | United States Government and Government Agencies and Authorities
Total Losses:
Fair Value	528	637.4
Fair Value, Recurring | United States Government and Government Agencies and Authorities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Total Losses:
Fair Value	103.6	132.8
Fair Value, Recurring | United States Government and Government Agencies and Authorities | Significant Other Observable Inputs (Level 2)
Total Losses:
Fair Value	424.4	504.6
Fair Value, Recurring | United States Government and Government Agencies and Authorities | Significant Unobservable Inputs (Level 3)
Total Losses:
Fair Value	0	0
Fair Value, Recurring | United States Government and Government Agencies and Authorities | Measured at Net Asset Value
Total Losses:
Fair Value	0	0
Fair Value, Recurring | States and Political Subdivisions
Total Losses:
Fair Value	1,568.9	1,890.1
Fair Value, Recurring | States and Political Subdivisions | Quoted Prices in Active Markets for Identical Assets (Level 1)
Total Losses:
Fair Value	0	0
Fair Value, Recurring | States and Political Subdivisions | Significant Other Observable Inputs (Level 2)
Total Losses:
Fair Value	1,568.9	1,890.1
Fair Value, Recurring | States and Political Subdivisions | Significant Unobservable Inputs (Level 3)
Total Losses:
Fair Value	0	0
Fair Value, Recurring | States and Political Subdivisions | Measured at Net Asset Value
Total Losses:
Fair Value	0	0
Fair Value, Recurring | Foreign Governments
Total Losses:
Fair Value	4.1	5.5
Fair Value, Recurring | Foreign Governments | Quoted Prices in Active Markets for Identical Assets (Level 1)
Total Losses:
Fair Value	0	0
Fair Value, Recurring | Foreign Governments | Significant Other Observable Inputs (Level 2)
Total Losses:
Fair Value	4.1	5.5
Fair Value, Recurring | Foreign Governments | Significant Unobservable Inputs (Level 3)
Total Losses:
Fair Value	0	0
Fair Value, Recurring | Foreign Governments | Measured at Net Asset Value
Total Losses:
Fair Value	0	0
Fair Value, Recurring | Corporate Bonds and Notes
Total Losses:
Fair Value	3,539.4	4,386.9
Fair Value, Recurring | Corporate Bonds and Notes | Quoted Prices in Active Markets for Identical Assets (Level 1)
Total Losses:
Fair Value	0	0
Fair Value, Recurring | Corporate Bonds and Notes | Significant Other Observable Inputs (Level 2)
Total Losses:
Fair Value	3,323.4	4,150.1
Fair Value, Recurring | Corporate Bonds and Notes | Significant Unobservable Inputs (Level 3)
Total Losses:
Fair Value	216	236.8
Fair Value, Recurring | Corporate Bonds and Notes | Measured at Net Asset Value
Total Losses:
Fair Value	0	0
Fair Value, Recurring | Redeemable Preferred Stock
Total Losses:
Fair Value		7.4
Fair Value, Recurring | Redeemable Preferred Stock | Quoted Prices in Active Markets for Identical Assets (Level 1)
Total Losses:
Fair Value	0
Fair Value, Recurring | Redeemable Preferred Stock | Significant Other Observable Inputs (Level 2)
Total Losses:
Fair Value	1.2
Fair Value, Recurring | Redeemable Preferred Stock | Significant Unobservable Inputs (Level 3)
Total Losses:
Fair Value	6.8
Fair Value, Recurring | Redeemable Preferred Stock | Measured at Net Asset Value
Total Losses:
Fair Value	0
Fair Value, Recurring | Collateralized Loan Obligations
Total Losses:
Fair Value	953.9	752.1
Fair Value, Recurring | Collateralized Loan Obligations | Quoted Prices in Active Markets for Identical Assets (Level 1)
Total Losses:
Fair Value	0	0
Fair Value, Recurring | Collateralized Loan Obligations | Significant Other Observable Inputs (Level 2)
Total Losses:
Fair Value	953.9	752.1
Fair Value, Recurring | Collateralized Loan Obligations | Significant Unobservable Inputs (Level 3)
Total Losses:
Fair Value	0	0
Fair Value, Recurring | Collateralized Loan Obligations | Measured at Net Asset Value
Total Losses:
Fair Value	0	0
Fair Value, Recurring | Other Mortgage- and Asset-backed
Total Losses:
Fair Value	292.5	307.5
Fair Value, Recurring | Other Mortgage- and Asset-backed | Quoted Prices in Active Markets for Identical Assets (Level 1)
Total Losses:
Fair Value	0	0
Fair Value, Recurring | Other Mortgage- and Asset-backed | Significant Other Observable Inputs (Level 2)
Total Losses:
Fair Value	287.4	300.5
Fair Value, Recurring | Other Mortgage- and Asset-backed | Significant Unobservable Inputs (Level 3)
Total Losses:
Fair Value	5.1	7
Fair Value, Recurring | Other Mortgage- and Asset-backed | Measured at Net Asset Value
Total Losses:
Fair Value	0	0
Fair Value, Recurring | Investments in Fixed Maturities
Total Losses:
Fair Value	6,894.8	7,986.9
Fair Value, Recurring | Investments in Fixed Maturities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Total Losses:
Fair Value	103.6	132.8
Fair Value, Recurring | Investments in Fixed Maturities | Significant Other Observable Inputs (Level 2)
Total Losses:
Fair Value	6,563.3	7,604.2
Fair Value, Recurring | Investments in Fixed Maturities | Significant Unobservable Inputs (Level 3)
Total Losses:
Fair Value	227.9	249.9
Fair Value, Recurring | Investments in Fixed Maturities | Measured at Net Asset Value
Total Losses:
Fair Value	0	0
Fair Value, Recurring | Preferred Stocks | Finance, Insurance and Real Estate
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	29	34.2
Fair Value, Recurring | Preferred Stocks | Other Industries
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	10.8	17.6
Fair Value, Recurring | Preferred Stocks | Quoted Prices in Active Markets for Identical Assets (Level 1) | Finance, Insurance and Real Estate
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0	0
Fair Value, Recurring | Preferred Stocks | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Industries
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0	0
Fair Value, Recurring | Preferred Stocks | Significant Other Observable Inputs (Level 2) | Finance, Insurance and Real Estate
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	29	34.2
Fair Value, Recurring | Preferred Stocks | Significant Other Observable Inputs (Level 2) | Other Industries
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	9.2	16.1
Fair Value, Recurring | Preferred Stocks | Significant Unobservable Inputs (Level 3) | Finance, Insurance and Real Estate
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0	0
Fair Value, Recurring | Preferred Stocks | Significant Unobservable Inputs (Level 3) | Other Industries
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	1.6	1.5
Fair Value, Recurring | Preferred Stocks | Measured at Net Asset Value | Finance, Insurance and Real Estate
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0	0
Fair Value, Recurring | Preferred Stocks | Measured at Net Asset Value | Other Industries
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0	0
Fair Value, Recurring | Common Stock | Finance, Insurance and Real Estate
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0.9	18.9
Fair Value, Recurring | Common Stock | Other Industries
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	1.2	2.9
Fair Value, Recurring | Common Stock | Quoted Prices in Active Markets for Identical Assets (Level 1) | Finance, Insurance and Real Estate
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0.9	18.9
Fair Value, Recurring | Common Stock | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Industries
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0.3	2.9
Fair Value, Recurring | Common Stock | Significant Other Observable Inputs (Level 2) | Finance, Insurance and Real Estate
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0	0
Fair Value, Recurring | Common Stock | Significant Other Observable Inputs (Level 2) | Other Industries
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0.4	0
Fair Value, Recurring | Common Stock | Significant Unobservable Inputs (Level 3) | Finance, Insurance and Real Estate
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0	0
Fair Value, Recurring | Common Stock | Significant Unobservable Inputs (Level 3) | Other Industries
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0.5	0
Fair Value, Recurring | Common Stock | Measured at Net Asset Value | Finance, Insurance and Real Estate
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0	0
Fair Value, Recurring | Common Stock | Measured at Net Asset Value | Other Industries
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0	0
Fair Value, Recurring | Bond Exchange Traded Funds
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	12.2	432
Fair Value, Recurring | Bond Exchange Traded Funds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	12.2	432
Fair Value, Recurring | Bond Exchange Traded Funds | Significant Other Observable Inputs (Level 2)
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0
Fair Value, Recurring | Bond Exchange Traded Funds | Significant Unobservable Inputs (Level 3)
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0
Fair Value, Recurring | Bond Exchange Traded Funds | Measured at Net Asset Value
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0	0
Fair Value, Recurring | Limited Liability Companies and Limited Partnerships
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	189.1	325
Fair Value, Recurring | Limited Liability Companies and Limited Partnerships | Quoted Prices in Active Markets for Identical Assets (Level 1)
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0	0
Fair Value, Recurring | Limited Liability Companies and Limited Partnerships | Significant Other Observable Inputs (Level 2)
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0	0
Fair Value, Recurring | Limited Liability Companies and Limited Partnerships | Significant Unobservable Inputs (Level 3)
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	0	0
Fair Value, Recurring | Limited Liability Companies and Limited Partnerships | Measured at Net Asset Value
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	189.1	325
Fair Value, Recurring | Dividends on Equity Securities Excluding Alternative Investments
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	243.2	830.6
Fair Value, Recurring | Dividends on Equity Securities Excluding Alternative Investments | Quoted Prices in Active Markets for Identical Assets (Level 1)
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	13.4	453.8
Fair Value, Recurring | Dividends on Equity Securities Excluding Alternative Investments | Significant Other Observable Inputs (Level 2)
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	38.6	50.3
Fair Value, Recurring | Dividends on Equity Securities Excluding Alternative Investments | Significant Unobservable Inputs (Level 3)
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	2.1	1.5
Fair Value, Recurring | Dividends on Equity Securities Excluding Alternative Investments | Measured at Net Asset Value
Total Losses:
Equity Securities at Fair Value (Cost: 2022 - $247.6; 2021 - $618.7)	189.1	325
Fair Value, Recurring | Designated as Hedging Instrument
Total Losses:
Derivative Instruments Designated as Cash Flow Hedges	0.4	0
Fair Value, Recurring | Designated as Hedging Instrument | Quoted Prices in Active Markets for Identical Assets (Level 1)
Total Losses:
Derivative Instruments Designated as Cash Flow Hedges	0	0
Fair Value, Recurring | Designated as Hedging Instrument | Significant Other Observable Inputs (Level 2)
Total Losses:
Derivative Instruments Designated as Cash Flow Hedges		0
Fair Value, Recurring | Designated as Hedging Instrument | Significant Unobservable Inputs (Level 3)
Total Losses:
Derivative Instruments Designated as Cash Flow Hedges	0	0
Fair Value, Recurring | Designated as Hedging Instrument | Measured at Net Asset Value
Total Losses:
Derivative Instruments Designated as Cash Flow Hedges	0	0
Corporate Bonds and Notes
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at Beginning of Year	236.8	433
Total Losses:
Included in Consolidated Statements of (Loss) Income	(12.7)	2.8
Included in Other Comprehensive (Loss) Income	(19.2)	1.2
Purchases	107.8	104.6
Settlements	0	0
Sales	(114.1)	(128.1)
Transfers into Level 3	23.1	8.1
Transfers out of Level 3	(5.7)	(184.8)
Balance at End of Year	216	236.8
Redeemable Preferred Stocks
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at Beginning of Year	6.1	6.2
Total Losses:
Included in Consolidated Statements of (Loss) Income	0	0
Included in Other Comprehensive (Loss) Income	(1.3)	(0.1)
Purchases	2	0
Settlements	0	0
Sales	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance at End of Year	6.8	6.1
Collateralized Loan Obligations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at Beginning of Year	0	0
Total Losses:
Included in Consolidated Statements of (Loss) Income		0
Included in Other Comprehensive (Loss) Income		0.1
Purchases		17.7
Settlements		0
Sales		(10)
Transfers into Level 3		10
Transfers out of Level 3		(17.8)
Balance at End of Year		0
Other Mortgage- and Asset-backed
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at Beginning of Year	7	10
Total Losses:
Included in Consolidated Statements of (Loss) Income	0	0
Included in Other Comprehensive (Loss) Income	(1.9)	(0.5)
Purchases	0	16.2
Settlements	0	(0.1)
Sales	0	(0.2)
Transfers into Level 3	0	0
Transfers out of Level 3	0	(18.4)
Balance at End of Year	5.1	7
Dividends on Equity Securities Excluding Alternative Investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at Beginning of Year	1.5	0
Total Losses:
Included in Consolidated Statements of (Loss) Income	0	0
Included in Other Comprehensive (Loss) Income	(0.2)	0.7
Purchases	2.7	1.7
Settlements	0	0
Sales	(1.9)	0
Transfers into Level 3	0	1.7
Transfers out of Level 3	0	(2.6)
Balance at End of Year	$ 2.1	$ 1.5

Fair Value Measurements - Fair

Fair Value Measurements - Fair Value using NAV and Unfunded Commitment by Asset Class (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded commitments, equity method limited liability investments	$ 95.9	$ 198.5
Unfunded commitments, other equity interests at fair value	96.3	102.3
Fair value using NAV, equity securities at modified cost	38.4	32.3
Unfunded commitments, equity securities at modified cost	0	0
Unfunded commitments, investments in limited liability companies and limited partnerships	192.2	300.8
Mezzanine Debt
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded commitments, equity method limited liability investments	51.6	43.3
Unfunded commitments, other equity interests at fair value	56	53.7
Senior Debt
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded commitments, equity method limited liability investments	42	46.7
Unfunded commitments, other equity interests at fair value	6	15.1
Distressed Debt
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded commitments, equity method limited liability investments	0	100.1
Unfunded commitments, other equity interests at fair value	13	20
Secondary Transactions
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded commitments, equity method limited liability investments	1.7	8.3
Unfunded commitments, other equity interests at fair value	4.2	6.8
Hedge Fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded commitments, equity method limited liability investments	0	0
Unfunded commitments, other equity interests at fair value	0	0
Leveraged Buyout
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded commitments, equity method limited liability investments	0.6	0.1
Unfunded commitments, other equity interests at fair value	9	6
Growth Equity
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded commitments, equity method limited liability investments	0	0
Unfunded commitments, other equity interests at fair value	7.9	0.7
Real Estate
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded commitments, equity method limited liability investments	0	0
Other
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded commitments, equity method limited liability investments	0	0
Unfunded commitments, other equity interests at fair value	0.2	0
Fair Value Measured at Net Asset Value Per Share
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value using NAV, equity method limited liability investments	217	241.9
Fair value using NAV, other equity interests at fair value	189.1	325
Fair value using NAV, equity securities at modified cost	8.3	7.7
Total	414.4	574.6
Fair Value Measured at Net Asset Value Per Share | Mezzanine Debt
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value using NAV, equity method limited liability investments	114.3	120
Fair value using NAV, other equity interests at fair value	106	129.3
Fair Value Measured at Net Asset Value Per Share | Senior Debt
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value using NAV, equity method limited liability investments	21.6	27.5
Fair value using NAV, other equity interests at fair value	21.9	29.9
Fair Value Measured at Net Asset Value Per Share | Distressed Debt
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value using NAV, equity method limited liability investments	9.4	21.7
Fair value using NAV, other equity interests at fair value	12.5	44.9
Fair Value Measured at Net Asset Value Per Share | Secondary Transactions
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value using NAV, equity method limited liability investments	9.3	11.7
Fair value using NAV, other equity interests at fair value	3.5	4
Fair Value Measured at Net Asset Value Per Share | Hedge Fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value using NAV, equity method limited liability investments	0.5	8.7
Fair value using NAV, other equity interests at fair value	18.1	82.7
Fair Value Measured at Net Asset Value Per Share | Leveraged Buyout
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value using NAV, equity method limited liability investments	8.9	8.7
Fair value using NAV, other equity interests at fair value	21.6	32.2
Fair Value Measured at Net Asset Value Per Share | Growth Equity
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value using NAV, equity method limited liability investments	1.2	0.7
Fair value using NAV, other equity interests at fair value	5.4	2
Fair Value Measured at Net Asset Value Per Share | Real Estate
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value using NAV, equity method limited liability investments	43.3	29.9
Fair Value Measured at Net Asset Value Per Share | Other
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value using NAV, equity method limited liability investments	8.5	13
Fair value using NAV, other equity interests at fair value	$ 0.1	$ 0

Fair Value Measurements - Balan

Fair Value Measurements - Balance Sheet Grouping (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Carrying Value
Loans to Policyholders	$ 283.4	$ 286.2
Other Short-term Investments, Fair Value Disclosure	278.4	284.1
Other Short-Term Investments	278.4	284.1
Mortgage Loans	91.1	96.8
Long-term Debt	1,386.9	1,121.9
Policyholder Obligations	701.3	504
Fair Value
Long-term Debt	1,195.1	1,152.1
Other Investments and Securities, at Cost	38.4	32.3
Equity Securities, FV-NI	38.4	32.3
Equity Securities at Modified Cost	586.5	448.1
Other Short-Term Investments	278.4	284.1
FHLB of Chicago
Fair Value
Policyholder Obligations	601	401.9
Loans to Policyholders
Fair Value
Loans	283.4	286.2
Mortgage Loans
Fair Value
Loans	91.1	96.8
United Insurance | FHLB Funding Agreements | FHLB of Chicago
Carrying Value
Policyholder Obligations	$ 601	$ 401.9

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Schedule of Goodwill by Segment (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Goodwill [Roll Forward]
Goodwill	$ 1,300.3	$ 1,312
Specialty Property & Casualty Insurance
Goodwill [Roll Forward]
Goodwill	1,043	1,043
Preferred Property & Casualty Insurance
Goodwill [Roll Forward]
Goodwill	49.6	49.6
Life & Health Insurance
Goodwill [Roll Forward]
Goodwill	$ 207.7	$ 219.4

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Schedule of Definite and Indefinite Life Intangible Assets (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 716.8	$ 706.4
Indefinite-lived Intangible Assets (Excluding Goodwill)	49.7	50.3
Intangible Assets, Gross (Excluding Goodwill), Total	766.5	756.7
Finite-Lived Intangible Assets, Accumulated Amortization	449.8	413.5
Finite-Lived Intangible Assets, Net	267	292.9
Intangible Assets, Net (Including Goodwill)	316.7	343.2
Trade Names
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets (Excluding Goodwill)	5.2	5.2
Insurance Licenses
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets (Excluding Goodwill)	44.5	45.1
Value of Business Acquired
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	237.5	237.5
Finite-Lived Intangible Assets, Accumulated Amortization	222.1	218.5
Finite-Lived Intangible Assets, Net	15.4	19
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	43.8	43.8
Finite-Lived Intangible Assets, Accumulated Amortization	41.1	38.1
Finite-Lived Intangible Assets, Net	2.7	5.7
Agent Relationships
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	81.6	81.6
Finite-Lived Intangible Assets, Accumulated Amortization	31	23.6
Finite-Lived Intangible Assets, Net	50.6	58
Trade Names
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	1.8	1.8
Finite-Lived Intangible Assets, Accumulated Amortization	1.7	0.9
Finite-Lived Intangible Assets, Net	0.1	0.9
Internal Use Software
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	352.1	341.7
Finite-Lived Intangible Assets, Accumulated Amortization	153.9	132.4
Finite-Lived Intangible Assets, Net	$ 198.2	$ 209.3

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Narrative (Details) - USD ($) $ in Millions		12 Months Ended
	Dec. 01, 2022	Dec. 31, 2022	Dec. 31, 2021
Goodwill [Line Items]
Amortization of definite lived intangible assets		$ 53.7	$ 87
Goodwill derecognized	$ 0.3
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Reserve National Insurance Company
Goodwill [Line Items]
Total impairment loss	$ 11.4

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets - Schedule of Future Amortization Expense (Details) $ in Millions	Dec. 31, 2022 USD ($)
Finite-Lived Intangible Assets [Line Items]
Definite-life intangible assets, amortization expense, 2020	$ 47.4
Definite-life intangible assets, amortization expense, 2021	37.8
Definite-life intangible assets, amortization expense, 2022	30.7
Definite-life intangible assets, amortization expense, 2023	26.9
Definite-life intangible assets, amortization expense, 2024	18.2
Agent Relationships
Finite-Lived Intangible Assets [Line Items]
Definite-life intangible assets, amortization expense, 2020	7.3
Definite-life intangible assets, amortization expense, 2021	5.5
Definite-life intangible assets, amortization expense, 2022	4.9
Definite-life intangible assets, amortization expense, 2023	4.9
Definite-life intangible assets, amortization expense, 2024	1.2
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Definite-life intangible assets, amortization expense, 2020	1.1
Definite-life intangible assets, amortization expense, 2021	0.4
Definite-life intangible assets, amortization expense, 2022	0.4
Definite-life intangible assets, amortization expense, 2023	0.3
Definite-life intangible assets, amortization expense, 2024	0.2
Internal Use Software
Finite-Lived Intangible Assets [Line Items]
Definite-life intangible assets, amortization expense, 2020	37.2
Definite-life intangible assets, amortization expense, 2021	30.3
Definite-life intangible assets, amortization expense, 2022	23.8
Definite-life intangible assets, amortization expense, 2023	20.2
Definite-life intangible assets, amortization expense, 2024	15.3
Life Insurance
Finite-Lived Intangible Assets [Line Items]
VOBA, amortization expense, 2020	1.8
VOBA, amortization expense, 2021	1.6
VOBA, amortization expense, 2022	1.6
VOBA, amortization expense, 2023	1.5
VOBA, amortization expense, 2024	$ 1.5

Variable Interest Entities - Ac

Variable Interest Entities - Activity of Alternative Energy Partnership Investments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Variable Interest Entity [Line Items]
Tax benefit recognized from Alternative Energy Partnership	$ (88.3)	$ (124.8)	$ 100.2
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Fundings	0	80
Cash distribution from investment	3.3	0.5
Loss on investments in Alternative Energy Partnership	(19.9)	(61.2)
Income tax credits recognized	4.3	73.9
Tax benefit recognized from Alternative Energy Partnership	$ 3.7	$ 5.1

Variable Interest Entities - As

Variable Interest Entities - Assets and Liabilities and Associated Maximum Loss Exposure of Alternative Energy Partnership Investments (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Variable Interest Entity [Line Items]
Other assets	$ 530,000,000	$ 592,200,000
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Cash	3,000,000
Equipment, net of depreciation	261,700,000
Other assets	5,100,000
Total unconsolidated assets	269,700,000
Maximum loss exposure	$ 16,300,000

Variable Interest Entities - Na

Variable Interest Entities - Narrative (Details) $ in Millions	Dec. 31, 2022 USD ($)
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Maximum loss exposure	$ 16.3

Other Comprehensive Income (L_3

Other Comprehensive Income (Loss) And Accumulated Other Comprehensive Income - Other Comprehensive Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Other Comprehensive Income (Loss)
Decrease (Increase) in Net Unrecognized Postretirement Benefit Costs	$ 18.9	$ (8.8)	$ 70.2
Other Comprehensive (Loss) Income Before Income Taxes	(1,524.4)	(294.8)	437.9
Other Comprehensive Income (Loss) before Income Taxes
Unrealized Holding Gains and Losses	325.5	(60.1)	(78.3)
Tax Effects from Postretirement Benefit Plans	(4)	(2.4)	(15.3)
Other Comprehensive Income Tax Benefit (Expense)	320.3	62.4	(93.5)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Stockholders' Equity Attributable to Parent	2,443.2	4,007.7
Accumulated Net Unrealized Investment Gain (Loss)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Stockholders' Equity Attributable to Parent	(2.2)	(3.7)	(2.1)	$ 0
OCI, before Reclassifications, Net of Tax, Attributable to Parent	2	(1.6)	(2.1)
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	(0.5)	0	0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	1.5	(1.6)	(2.1)
Accumulated Defined Benefit Plans Adjustment
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Stockholders' Equity Attributable to Parent	(37.2)	(52.1)	(45.7)
OCI, before Reclassifications, Net of Tax, Attributable to Parent	15.2	(6.5)	4.3
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	(0.3)	0.1	50.6
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	14.9	(6.4)	54.9
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Stockholders' Equity Attributable to Parent	2.8	(1.9)	(2.3)
OCI, before Reclassifications, Net of Tax, Attributable to Parent	4.7	0	0.4
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	0	0.4	0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	4.7	0.4	0.4
Accumulated Other Comprehensive (Loss) Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Stockholders' Equity Attributable to Parent	(756)	448.1	680.5	$ 336.1
OCI, before Reclassifications, Net of Tax, Attributable to Parent	(1,193.2)	(190.1)	307
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	(10.9)	(42.3)	37.4
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	$ (1,204.1)	$ (232.4)	$ 344.4

Other Comprehensive Income (L_4

Other Comprehensive Income (Loss) And Accumulated Other Comprehensive Income - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Securities, Unrealized Gain (Loss) [Abstract]
Accumulated Other Comprehensive Income	$ (756)	$ 448.1
AOCI, Gain (Loss), Debt Securities, Available-for-sale, with Allowance for Credit Loss, Parent
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	325.9	59.7	$ (78.7)
Reclassification from AOCI, Current Period, Tax	2.7	11.3	3.6
Accumulated Net Unrealized Investment Gain (Loss)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	(0.4)	0.4	0.5
Reclassification from AOCI, Current Period, Tax	0.1	0	0
Accumulated Defined Benefit Plans Adjustment
Debt Securities, Unrealized Gain (Loss) [Abstract]
Net Unrecognized Postretirement Benefit Costs, Net of Income Taxes				$ (100.6)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	(4)	2.4	(15.3)
Reclassification from AOCI, Current Period, Tax	0.1	0	(13.5)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	(1.2)	(0.1)	0
Reclassification from AOCI, Current Period, Tax	0	(0.1)	0
Accumulated Other Comprehensive (Loss) Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	320.3	62.4	(93.5)
Reclassification from AOCI, Current Period, Tax	$ 2.9	$ 11.2	$ (9.9)

Other Comprehensive Income (L_5

Other Comprehensive Income (Loss) And Accumulated Other Comprehensive Income - Reclassification from AOCI to Consolidated Statements of Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income Tax Expense (Benefit)	$ 88.3	$ 124.8	$ (100.2)
Net (Loss) Income	(301.2)	(120.5)	409.9
Stockholders' Equity Attributable to Parent	2,443.2	4,007.7
AOCI, Gain (Loss), Debt Securities, Available-for-sale, with Allowance for Credit Loss, Parent
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Stockholders' Equity Attributable to Parent	(719.4)	505.8	730.6	$ 439.4
OCI, before Reclassifications, Net of Tax, Attributable to Parent	(1,215.1)	(182)	304.4
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	(10.1)	(42.8)	(13.2)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(1,225.2)	(224.8)	291.2
Reclassification from AOCI, Current Period, Tax	2.7	11.3	3.6
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	325.9	59.7	(78.7)
Accumulated Net Unrealized Investment Gain (Loss)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Stockholders' Equity Attributable to Parent	(2.2)	(3.7)	(2.1)	0
OCI, before Reclassifications, Net of Tax, Attributable to Parent	2	(1.6)	(2.1)
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	(0.5)	0	0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	1.5	(1.6)	(2.1)
Reclassification from AOCI, Current Period, Tax	0.1	0	0
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	(0.4)	0.4	0.5
Accumulated Defined Benefit Plans Adjustment
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Stockholders' Equity Attributable to Parent	(37.2)	(52.1)	(45.7)
OCI, before Reclassifications, Net of Tax, Attributable to Parent	15.2	(6.5)	4.3
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax				(100.6)
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	(0.3)	0.1	50.6
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	14.9	(6.4)	54.9
Reclassification from AOCI, Current Period, Tax	0.1	0	(13.5)
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	(4)	2.4	(15.3)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Stockholders' Equity Attributable to Parent	2.8	(1.9)	(2.3)
OCI, before Reclassifications, Net of Tax, Attributable to Parent	4.7	0	0.4
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax				(2.7)
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	0	0.4	0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	4.7	0.4	0.4
Reclassification from AOCI, Current Period, Tax	0	(0.1)	0
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	(1.2)	(0.1)	0
Accumulated Other Comprehensive (Loss) Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Stockholders' Equity Attributable to Parent	(756)	448.1	680.5	$ 336.1
OCI, before Reclassifications, Net of Tax, Attributable to Parent	(1,193.2)	(190.1)	307
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	(10.9)	(42.3)	37.4
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(1,204.1)	(232.4)	344.4
Reclassification from AOCI, Current Period, Tax	2.9	11.2	(9.9)
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	$ 320.3	$ 62.4	$ (93.5)

Shareholders' Equity - Narrativ

Shareholders' Equity - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	May 06, 2020	Aug. 06, 2014
Schedule of Capitalization, Equity [Line Items]
Preferred stock, shares authorized (in shares)	20,000,000
Preferred stock, par value (in dollars per share)	$ 0.10
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Preferred stock, shares issued (in shares)	0
Preferred stock, shares outstanding (in shares)		0
Common stock, shares outstanding (in shares)	63,912,762	63,684,628
Stock Repurchase Program, Additional Authorized Amount				$ 200,000,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 171,600,000		$ 333,300,000		$ 133,300,000
Stock repurchased and retired during period (in shares)		2,085,000	1,617,000
Stock Repurchased and Retired During Period, Value		$ 161,700,000	$ 110,400,000
Share-based compensation expense	$ 17,700,000	28,000,000	24,900,000
Percentage of authorized control Level RBC	200%
Dividends paid	$ 79,700,000	$ 80,600,000	$ 78,900,000
Amount available for dividend payment	800,000,000
Common Stock
Schedule of Capitalization, Equity [Line Items]
Average cost per share (in dollars per share)		$ 77.58	$ 68.29
Kemper's Insurance Subsidiaries
Schedule of Capitalization, Equity [Line Items]
Cash dividends paid by Kemper's Insurance Subsidiaries to Kemper	311,700,000
Amount available for dividend payments	108,900,000
Amount of restricted net assets for consolidated and unconsolidated subsidiaries	3,500,000,000
Life & Health Insurance | Kemper's Insurance Subsidiaries
Schedule of Capitalization, Equity [Line Items]
Statutory capital and surplus	265,200,000	$ 446,000,000
Statutory net income	174,400,000	(12,400,000)	$ 60,700,000
Statutory capital and surplus required	50,000,000
Property & Casualty Insurance Subsidiaries | Kemper's Insurance Subsidiaries
Schedule of Capitalization, Equity [Line Items]
Statutory capital and surplus	1,600,000,000	1,500,000,000
Statutory net income	(226,700,000)	$ (206,900,000)	$ 361,600,000
Statutory capital and surplus required	$ 665,700,000
Employee Stock Purchase Plan | Employee Stock
Schedule of Capitalization, Equity [Line Items]
Shares issued under employee stock purchase plan (in shares)	102,000	79,000	61,000
Price per share (in dollars per share)	$ 40.83	$ 58.08	$ 61.57
Share-based compensation expense	$ 700,000	$ 800,000	$ 700,000

Pension Benefits - Narrative (D

Pension Benefits - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) employees	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, cost	$ 30.6	$ 28.9	$ 26.1
Pension and Other Postretirement Benefits Expense (Reversal of Expense), Noncash			50.6
Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Number of participants and beneficiaries | employees	3,100
Contribution as a percentage of compensation	3%
Actuarial loss amortization period	26 years
Amounts that will be amortized from AOCI in next fiscal Year	$ 1.4
Unfunded liability	(23.6)	(12.9)
Pension expense	3.8	0.6	58.6
Unrecognized pension gain (loss) arising during the year	12	6	7.8
Payment for Pension Benefits			117.1
Plan Amendments	0	18.3
Supplemental Employee Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
Unfunded liability	22	28
Pension expense	0.8	0.7	0.8
Unrecognized pension gain (loss) arising during the year	$ 4.8	$ 1.3	(2.7)
Terminal Funding Annuity
Defined Benefit Plan Disclosure [Line Items]
Proceeds from Annuities and Investment Certificates			$ 202.5

Pension Benefits - Changes in F

Pension Benefits - Changes in Fair Value of Plan Assets and Changes in Accumulated Benefit Obligations (Details) - Pension Plans, Defined Benefit - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plans’ Assets at Beginning of Year	$ 391.7	$ 405.4
Actual Return on Plan Assets	(65.1)	(0.7)
Benefits Paid	(13.7)	(13)
Settlement Benefits	(2.9)	0
Benefits Paid	(13.7)	(13)
Fair Value of Plan Assets at End of Year	315.8	391.7	$ 405.4
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Accumulated Postretirement Benefit Obligation at Beginning of Year	378.8	382.3
Interest Cost	8.7	7.2	16.5
Benefits Paid	(13.7)	(13)
Settlement Benefits	2.9	0
Increase to projected benefit obligation	0	18.3
Actuarial Gains	(84.5)	(16)
Projected Benefit Obligation at End of Year	292.2	378.8	$ 382.3
Funded Status—Plan Assets in Excess of Projected Benefit Obligation	23.6	12.9
Unamortized Amount Reported in AOCI at End of Year	(63.1)	(77.6)
Accumulated Benefit Obligation at End of Year	$ 289.3	$ 378.8

Pension Benefits - Actuarial As

Pension Benefits - Actuarial Assumptions for Project Benefit Obligations (Details) - Pension Plans, Defined Benefit	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount Rate	5.05%	2.89%
Rate of Increase in Future Compensation Levels	0%	0%

Pension Benefits - Weighted Ave

Pension Benefits - Weighted Average Asset Allocation for Pension Plans (Details) - Pension Plans, Defined Benefit	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Weighted-average asset allocations	100%	100%
Corporate Bonds and Notes
Defined Benefit Plan Disclosure [Line Items]
Weighted-average asset allocations	27%	30%
Bond Exchange Traded Funds
Defined Benefit Plan Disclosure [Line Items]
Weighted-average asset allocations	35%	32%
Cash and Short-term Investments
Defined Benefit Plan Disclosure [Line Items]
Weighted-average asset allocations	37%	36%
Other Assets
Defined Benefit Plan Disclosure [Line Items]
Weighted-average asset allocations	1%	2%

Pension Benefits - Fair Value P

Pension Benefits - Fair Value Plan Assets Measurements (Details) - Pension Plans, Defined Benefit - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	$ 315.8	$ 391.7	$ 405.4
Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	268.1	320.3
Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	45.9	63
Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0	0
United States Government and Government Agencies and Authorities
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	40.1	54.6
United States Government and Government Agencies and Authorities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	40.1	54.6
United States Government and Government Agencies and Authorities | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0	0
United States Government and Government Agencies and Authorities | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0	0
States and Political Subdivisions
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0.1	0.1
States and Political Subdivisions | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0	0
States and Political Subdivisions | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0.1	0.1
States and Political Subdivisions | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0	0
Corporate Bonds and Notes
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	45.4	62.3
Corporate Bonds and Notes | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0	0
Corporate Bonds and Notes | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	45.4	62.3
Corporate Bonds and Notes | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0	0
Bond Exchange Traded Funds
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	111.1	125
Bond Exchange Traded Funds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	111.1	125
Bond Exchange Traded Funds | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0	0
Bond Exchange Traded Funds | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0	0
Limited Liability Companies and Limited Partnerships
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	1.8	8.4
Limited Liability Companies and Limited Partnerships | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0	0
Limited Liability Companies and Limited Partnerships | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0	0
Limited Liability Companies and Limited Partnerships | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0	0
Short-term Investments
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	116.1	140.2
Short-term Investments | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	116.1	140.2
Short-term Investments | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0	0
Short-term Investments | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0	0
Receivables and Other
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0.8	0.5
Receivables and Other | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0.8	0.5
Receivables and Other | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0	0
Receivables and Other | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0	0
Foreign Governments
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0.4	0.6
Foreign Governments | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0	0
Foreign Governments | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0.4	0.6
Foreign Governments | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0	0
Measured at Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	1.8	8.4
Measured at Net Asset Value | United States Government and Government Agencies and Authorities
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0	0
Measured at Net Asset Value | States and Political Subdivisions
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0	0
Measured at Net Asset Value | Corporate Bonds and Notes
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0	0
Measured at Net Asset Value | Bond Exchange Traded Funds
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0	0
Measured at Net Asset Value | Limited Liability Companies and Limited Partnerships
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	1.8	8.4
Measured at Net Asset Value | Short-term Investments
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0	0
Measured at Net Asset Value | Receivables and Other
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	0	0
Measured at Net Asset Value | Foreign Governments
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets	$ 0	$ 0

Pension Benefits - Changes in_2

Pension Benefits - Changes in Fair Value of Pension Plans Level 3 (Details) - Pension Plans, Defined Benefit - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plans’ Assets at Beginning of Year	$ 391.7	$ 405.4
Fair Value of Plan Assets at End of Year	315.8	391.7
Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plans’ Assets at Beginning of Year	0
Fair Value of Plan Assets at End of Year	$ 0	$ 0

Pension Benefits - Components o

Pension Benefits - Components of Comprehensive Pension Expense (Details) - Pension Plans, Defined Benefit - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Service Cost Earned During the Year	$ 0	$ 0	$ 0
Interest Cost on Projected Benefit Obligation	8.7	7.2	16.5
Expected Return on Plan Assets	(7.4)	(9.5)	(27.6)
Amortization of Actuarial Loss	1.8	2.9	5.6
Pension Obligation Settlement Costs	0	0	64.1
Pension Expense Recognized in Consolidated Statements of (Loss) Income	3.8	0.6	58.6
Unrecognized Pension Loss Arising During the Year	(12)	(6)	(7.8)
Prior Service Cost Arising During the Year	0	18.3	0
Amortization of Prior Service Credit	0.7	0	0
Amortization of Prior Service Credit	(0.7)	0	0
Amortization of Accumulated Unrecognized Pension Loss	(1.8)	(2.9)	(69.8)
Comprehensive Pension (Income) Expense	$ (10.7)	$ 10	$ (19)

Pension Benefits - Actuarial _2

Pension Benefits - Actuarial Assumptions Pension Expense (Details) - Pension Plans, Defined Benefit	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Weighted-average Discount Rate	2.89%	2.56%	2.56%
Service Cost Discount Rate		2.41%	2.42%
Interest Cost Discount Rate	2.35%	1.90%	1.89%
Rate of Increase in Future Compensation Levels	3.40%	3.40%	3.40%
Expected Long Term Rate of Return on Plan Assets	2.08%	2.70%	4.90%

Pension Benefits - Pension Bene

Pension Benefits - Pension Benefit Payments (Details) - Pension Plans, Defined Benefit $ in Millions	Dec. 31, 2022 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Estimated Pension Benefit Payments, 2020	$ 18
Estimated Pension Benefit Payments, 2021	17.2
Estimated Pension Benefit Payments, 2022	18
Estimated Pension Benefit Payments, 2023	18.7
Estimated Pension Benefit Payments, 2024	19.2
Estimated Pension Benefit Payments, 2025 - 2029	$ 99.1

Postretirement Benefits Other_3

Postretirement Benefits Other Than Pensions - Narrative (Details) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2022 USD ($) employees	Dec. 31, 2017 USD ($)	Dec. 31, 2021 USD ($)
Other Postretirement Benefit Plan, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Number of retired employees covered | employees		400
Number of active employees covered | employees		500
Pre-tax reduction to its accumulated postretirement benefit obligation			$ 11
Amounts that will be amortized from AOCI in next fiscal Year				$ 3.1
Estimated future employer contributions in next fiscal year		$ 1
Medical Benefits
Defined Benefit Plan Disclosure [Line Items]
Health care cost trend rate assumed for next fiscal year		6.04%		6.29%
Health care cost trend rate assumed for future years		4.80%
Prescription Drug Benefits
Defined Benefit Plan Disclosure [Line Items]
Health care cost trend rate assumed for next fiscal year		6.66%		7.04%
Health care cost trend rate assumed for future years	4.80%	4.80%

Postretirement Benefits Other_4

Postretirement Benefits Other Than Pensions - Changes in Fair Value of Plan Assets and Changes in Accumulated Benefit Obligations (Details) - Other Postretirement Benefit Plan, Defined Benefit - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plans’ Assets at Beginning of Year	$ 0	$ 0
Employer Contributions	1	1.1
Plan Participants’ Contributions	0.3	0.1
Benefits Paid	(1.3)	(1.2)
Fair Value of Plan Assets at End of Year	0	0	$ 0
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Accumulated Postretirement Benefit Obligation at Beginning of Year	11.2	13.7
Service Cost	0.2	0.3	0.2
Interest Cost	0.2	0.1	0.3
Plan Participants’ Contributions	0.3	0.1
Benefits Paid	(1.3)	(1.2)
Actuarial Gains	(2.5)	(1.8)
Projected Benefit Obligation at End of Year	8.1	11.2	$ 13.7
Funded Status—Plan Assets in Excess of Projected Benefit Obligation	(8.1)	(11.2)
Unamortized Actuarial Gain Reported in AOCI at End of Year	$ 16.9	$ 17.5

Postretirement Benefits Other_5

Postretirement Benefits Other Than Pensions - Actuarial Assumptions of OPEB Accumulated Benefit Obligation (Details) - Other Postretirement Benefit Plan, Defined Benefit	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Discount Rate	5.08%	2.56%
Rate of Increase in Future Compensation Levels	2.20%	2.20%

Postretirement Benefits Other_6

Postretirement Benefits Other Than Pensions - Components Of Comprehensive OPEB (Income) Expense (Details) - Other Postretirement Benefit Plan, Defined Benefit - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Service Cost Earned During the Year	$ 0.2	$ 0.3	$ 0.2
Interest Cost on Accumulated Postretirement Benefit Obligation	0.2	0.1	0.3
Amortization of Prior Service Credit	(1.3)	(1.3)	(1.3)
Amortization of Accumulated Unrecognized OPEB Gain	(1.8)	(1.7)	(1.9)
Pension Expense Recognized in Consolidated Statements of (Loss) Income	(2.7)	(2.6)	(2.7)
Unrecognized OPEB (Gain) Loss Arising During the Year	(2.5)	(1.8)	1.9
Prior Service Credit Arising During the Year from Plan Amendments				$ 11
Prior Service Cost Arising During the Year	1.3	1.3	1.3
Amortization of Accumulated Unrecognized OPEB Gain	1.8	1.7	1.9
Comprehensive OPEB (Income) Expense	$ (2.1)	$ (1.4)	$ 2.4

Postretirement Benefits Other_7

Postretirement Benefits Other Than Pensions - Actuarial Assumptions of OPEB Expense (Details)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Effective Rate for Interest on Service Cost	2.54%	0%	0%
Other Postretirement Benefit Plan, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Weighted-average Discount Rate	2.56%	1.99%	2.96%
Service Cost Discount Rate	2.79%	2.06%	2.94%
Interest Cost Discount Rate	1.97%	1.19%	2.47%
Rate of Increase in Future Compensation Levels	2.20%	2.20%	2.20%

Postretirement Benefits Other_8

Postretirement Benefits Other Than Pensions - Benefit Payments Net of Expected Medicare Part D Subsidy (Details) - Other Postretirement Benefit Plan, Defined Benefit $ in Millions	Dec. 31, 2022 USD ($)
Estimated Benefit Payments Excluding Medicare Part D Subsidy
2020	$ 1
2021	1.1
2022	1
2023	0.9
2024	0.8
2028-2032	3.2
Expected Medicare Part D Subsidy
2020	0
2021	0
2022	0
2023	0
2024	0
2028-2032	0
Net Estimated Benefit Payments
2020	1
2021	1.1
2022	1
2023	0.9
2024	0.8
2028-2032	$ 3.2

Long-term Equity-based Compen_3

Long-term Equity-based Compensation - Narrative (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) installment $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized (in shares)		7,000,000
Shares available for grant (in shares)		2,873,336
Common stock, conversion ratio	3
Share-based compensation arrangement by share-based payment award, equity instruments other than options, conversion ratio	1
Share-based compensation expense | $	$ 17,700	$ 28,000	$ 24,900
Total compensation cost not yet recognized | $	$ 24,300
Weighted-average grant-date fair values (in dollars per share) | $ / shares	$ 14.67	$ 19.29	$ 19.24
Total intrinsic value | $	$ 300	$ 1,300	$ 7,100
Cash received from exercises of awards | $	600	3,700	5,000
Total tax benefit realized for tax deductions from exercise of awards | $	$ 100	$ 300	$ 1,500
Additional shares for grant if performance level is above target	100%
Number of shares issued not to vest if below minimum target	0
Award vesting rights, performance period	3 years
Awards granted in period, measured with market performance condition	67%	67%	67%
Awards granted in period, measured with entity specific metric	33%	33%	33%
Performance Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Reduction in share authorization if maximum performance level is met or exceeded (in shares)		1,831,722
Award vesting period	3 years
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting installments | installment	3
Award vesting period	3 years
Expiration period	10 years
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual awards of restricted stock units to be issued to each non-employee director, aggregate fair value | $	$ 130	$ 130	$ 130
Restricted Stock Units (RSUs) | Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	1 year
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total fair value of vested awards | $	$ 7,500	19,600	20,400
Tax benefits for tax deductions realized from awards | $	$ 1,600	$ 4,100	$ 4,300
Performance Period 1 | Performance Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Reduction in share authorization if maximum performance level is met or exceeded (in shares)	659,073
Number of additional shares to be granted if maximum performance level is met or exceeded (in shares)	219,691
Performance Period 2 | Performance Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Reduction in share authorization if maximum performance level is met or exceeded (in shares)	642,228
Number of additional shares to be granted if maximum performance level is met or exceeded (in shares)	214,076
Performance Period 3 | Performance Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Reduction in share authorization if maximum performance level is met or exceeded (in shares)	530,421
Number of additional shares to be granted if maximum performance level is met or exceeded (in shares)	176,807

Long-term Equity-based Compen_4

Long-term Equity-based Compensation - Black-Scholes Pricing Model For Options (Details) - Stock Options	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility rate, minimum	33.20%	33.67%	29.22%
Expected volatility rate, maximum	37.67%	38.04%	37.27%
Risk-free interest rate, minimum	1.20%	0.26%	0.17%
Risk-free interest rate, maximum	4.33%	1.33%	1.46%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield rate	1.59%	1.18%	1.19%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield rate	2.25%	1.78%	1.48%
Employee | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average expected life (in years)	4 years	4 years	4 years
Employee | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average expected life (in years)	6 years	6 years	6 years

Long-term Equity-based Compen_5

Long-term Equity-based Compensation - Option and SAR Activity (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) $ / shares shares
Shares Subject to Awards
Outstanding at Beginning of the Year (in shares) | shares	2,103,979
Granted (in shares) | shares	537,768
Exercised (in shares) | shares	(18,937)
Forfeited or Expired (in shares) | shares	(297,234)
Outstanding at December 31, 2019 (in shares) | shares	2,325,576
Vested and Expected to Vest at December 31, 2019 (in shares) | shares	2,259,869
Exercisable at December 31, 2019 (in shares) | shares	1,565,065
Weighted- average Exercise Price Per Share ($)
Outstanding at Beginning of the Year (in dollars per share) | $ / shares	$ 61.93
Granted (in dollars per share) | $ / shares	52.70
Exercised (in dollars per share) | $ / shares	35.95
Forfeited or Expired (in dollars per share) | $ / shares	69.06
Outstanding at December 31, 2019 (in dollars per share) | $ / shares	59.10
Vested and Expected to Vest at December 31, 2019 (in dollars per share) | $ / shares	59.05
Exercisable at December 31, 2019 (in dollars per share) | $ / shares	$ 58.91
Weighted- average Remaining Contractual Life (in Years)
Outstanding at December 31, 2022	6 years 2 months 23 days
Vested and Expected to Vest at December 31, 2022	6 years 1 month 28 days
Exercisable at December 31, 2022	5 years 18 days
Aggregate Intrinsic Value ($ In Millions)
Outstanding at December 31, 2022 | $	$ 6.2
Vested and Expected to Vest at December 31, 2022 | $	6.2
Exercisable at December 31, 2022 | $	$ 6.2

Long-term Equity-based Compen_6

Long-term Equity-based Compensation - Schedule of Outstanding Options (Details) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Subject to Awards (in shares)	2,325,576	2,103,979
Weighted- average Exercise Price Per Share ($) (in dollars per share)	$ 59.10	$ 61.93
Weighted- average Remaining Contractual Life (in Years)	6 years 2 months 23 days
Range of Exercise Prices $20.01 - $30.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Lower Range Limit (in dollars per share)	$ 20.01
Range of Exercise Prices, Upper Range Limit (in dollars per share)	$ 30
Shares Subject to Awards (in shares)	104,562
Weighted- average Exercise Price Per Share ($) (in dollars per share)	$ 27.71
Weighted- average Remaining Contractual Life (in Years)	3 years 2 months 1 day
Shares Subject to Awards (in shares)	104,562
Weighted- average Exercise Price Per Share ($) (in dollars per share)	$ 27.71
Range of Exercise Prices $30.01 - $40.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Lower Range Limit (in dollars per share)	30.01
Range of Exercise Prices, Upper Range Limit (in dollars per share)	$ 40
Shares Subject to Awards (in shares)	107,969
Weighted- average Exercise Price Per Share ($) (in dollars per share)	$ 33.98
Weighted- average Remaining Contractual Life (in Years)	2 years 2 months 23 days
Shares Subject to Awards (in shares)	107,969
Weighted- average Exercise Price Per Share ($) (in dollars per share)	$ 33.98
Range of Exercise Prices $40.01 - $50.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Lower Range Limit (in dollars per share)	40.01
Range of Exercise Prices, Upper Range Limit (in dollars per share)	$ 50
Shares Subject to Awards (in shares)	345,616
Weighted- average Exercise Price Per Share ($) (in dollars per share)	$ 42.44
Weighted- average Remaining Contractual Life (in Years)	3 years 8 months 26 days
Shares Subject to Awards (in shares)	345,616
Weighted- average Exercise Price Per Share ($) (in dollars per share)	$ 42.44
Range of Exercise Prices $50.01 - $60.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Lower Range Limit (in dollars per share)	50.01
Range of Exercise Prices, Upper Range Limit (in dollars per share)	$ 60
Shares Subject to Awards (in shares)	798,652
Weighted- average Exercise Price Per Share ($) (in dollars per share)	$ 55.44
Weighted- average Remaining Contractual Life (in Years)	7 years 6 months 25 days
Shares Subject to Awards (in shares)	306,082
Weighted- average Exercise Price Per Share ($) (in dollars per share)	$ 59.83
Range of Exercise Prices $60.01 - $70.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Lower Range Limit (in dollars per share)	60.01
Range of Exercise Prices, Upper Range Limit (in dollars per share)	$ 70
Shares Subject to Awards (in shares)	335,981
Weighted- average Exercise Price Per Share ($) (in dollars per share)	$ 69.24
Weighted- average Remaining Contractual Life (in Years)	7 years 6 months 14 days
Shares Subject to Awards (in shares)	149,172
Weighted- average Exercise Price Per Share ($) (in dollars per share)	$ 68.72
Range of Exercise Prices $70.01 - $80.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Lower Range Limit (in dollars per share)	70.01
Range of Exercise Prices, Upper Range Limit (in dollars per share)	$ 80
Shares Subject to Awards (in shares)	604,689
Weighted- average Exercise Price Per Share ($) (in dollars per share)	$ 76.60
Weighted- average Remaining Contractual Life (in Years)	6 years 4 months 17 days
Shares Subject to Awards (in shares)	527,043
Weighted- average Exercise Price Per Share ($) (in dollars per share)	$ 76.53
Range of Exercise Prices $80.01 - $90.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Lower Range Limit (in dollars per share)	80.01
Range of Exercise Prices, Upper Range Limit (in dollars per share)	$ 90
Shares Subject to Awards (in shares)	28,107
Weighted- average Exercise Price Per Share ($) (in dollars per share)	$ 83.40
Weighted- average Remaining Contractual Life (in Years)	6 years 6 months 14 days
Shares Subject to Awards (in shares)	24,621
Weighted- average Exercise Price Per Share ($) (in dollars per share)	$ 83.74
Range of Exercise Prices $20.01 - $90.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Lower Range Limit (in dollars per share)	20.01
Range of Exercise Prices, Upper Range Limit (in dollars per share)	$ 90
Shares Subject to Awards (in shares)	2,325,576
Weighted- average Exercise Price Per Share ($) (in dollars per share)	$ 59.10
Weighted- average Remaining Contractual Life (in Years)	6 years 2 months 23 days
Shares Subject to Awards (in shares)	1,565,065
Weighted- average Exercise Price Per Share ($) (in dollars per share)	$ 58.91

Long-term Equity-based Compen_7

Long-term Equity-based Compensation - Activity Related to Nonvested Restricted Stock (Details)	12 Months Ended
	Dec. 31, 2022 $ / shares shares
Time Vested Restricted Stock Units
Number of Stock Units
Nonvested Balance at Beginning of Year (in shares) | shares	81,701
Grants in Period (in shares) | shares	531,841
Vested in Period (in shares) | shares	(30,591)
Forfeited in Period (in shares) | shares	(104,697)
Nonvested Balance at December 31, 2019 (in shares) | shares	478,254
Weighted- average Grant-date Fair Value Per Unit
Nonvested Balance at Beginning of Year (in dollars per share) | $ / shares	$ 69.82
Granted (in dollars per share) | $ / shares	52.29
Vested (in dollars per share) | $ / shares	71.43
Forfeited (in dollars per share) | $ / shares	53.60
Nonvested Balance at December 31, 2019 (in dollars per share) | $ / shares	$ 53.78
Performance Based Restricted Stock Units
Number of Stock Units
Nonvested Balance at Beginning of Year (in shares) | shares	600,321
Grants in Period (in shares) | shares	305,035
Vested in Period (in shares) | shares	(113,651)
Forfeited in Period (in shares) | shares	(181,131)
Nonvested Balance at December 31, 2019 (in shares) | shares	610,574
Weighted- average Grant-date Fair Value Per Unit
Nonvested Balance at Beginning of Year (in dollars per share) | $ / shares	$ 79.15
Granted (in dollars per share) | $ / shares	55.90
Vested (in dollars per share) | $ / shares	73.69
Forfeited (in dollars per share) | $ / shares	78.38
Nonvested Balance at December 31, 2019 (in dollars per share) | $ / shares	$ 68.78

Long-term Equity-based Compen_8

Long-term Equity-based Compensation - Schedule of Share-based Compensation, Nonemployee Director Deferred Stock Unit Award Plan (Details)	12 Months Ended
	Dec. 31, 2022 $ / shares shares
Number of DSUs
Vested Balance at Beginning of the Year (in shares) | shares	44,820
Reduction for Shares Issued on Conversion (in shares) | shares	(8,220)
Vested Balance at December 31, 2019 (in shares) | shares	36,600
Weighted- average Grant-date Fair Value Per DSU
Vested Balance at Beginning of the Year (in dollars per share) | $ / shares	$ 44.74
Reduction for Shares Issued on Conversion (in dollars per share) | $ / shares	42.43
Vested Balance at December 31, 2019 (in dollars per share) | $ / shares	$ 45.25

Policyholder Contract Liabili_3

Policyholder Contract Liabilities - Policyholder Contract Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Investment Holdings [Line Items]
Policyholder Obligations	$ 701.3	$ 504
Universal Life-type Policyholder Account Balances
Investment Holdings [Line Items]
Policyholder Obligations	100.3	102.1
United Insurance | FHLB of Chicago | FHLB Funding Agreements
Investment Holdings [Line Items]
Policyholder Obligations	$ 601	$ 401.9

Policyholder Contract Liabili_4

Policyholder Contract Liabilities - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, amount of advances	$ 81	$ 85
FHLB of Chicago | United Insurance
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, amount of advances	334.8	300.4
Payments of FHLBank borrowings	$ 135.7	$ 306.3

Policyholder Contract Liabili_5

Policyholder Contract Liabilities - Supplemental Financial Information (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Liability under Funding Agreements	$ 701.3	$ 504
United Insurance | FHLB of Chicago
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Fair Value of Collateral Pledged	744.6	556.6
FHLB Funding Agreements | United Insurance | FHLB of Chicago
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Liability under Funding Agreements	601	401.9
FHLB of Chicago Common Stock Owned at Cost	17.5	11.8
Universal Life-type Policyholder Account Balances
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Liability under Funding Agreements	$ 100.3	$ 102.1

Debt - Narrative (Details)

Debt - Narrative (Details) - USD ($)			1 Months Ended	12 Months Ended
	Feb. 23, 2022	Jun. 04, 2019	Jun. 30, 2017	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Mar. 10, 2022	Feb. 15, 2022	Sep. 22, 2020	Jul. 02, 2018	Jun. 08, 2018	Feb. 28, 2015
Debt Instrument [Line Items]
Long-term Debt, Current and Non-current, at Amortized Cost (Fair Value: 2022 - $1,195.1; 2021 - $1,152.1)				$ 1,386,900,000	$ 1,121,900,000
Loss from Early Extinguishment of Debt				3,700,000	0	$ 0
Interest expense				54,700,000	43,600,000	36,000,000
Interest paid including facility fees				51,500,000	43,900,000	$ 34,600,000
Net gain on derivative instrument				500,000
Gain on derivative				$ 5,900,000
Derivative, Gain, Statement of Income or Comprehensive Income [Extensible Enumeration]				Gain on Cash Flow Hedges
Amortization				$ 500,000
Federal Home Loan Bank, amount of advances				81,000,000	85,000,000
Federal Home Loan Bank, amount of advances, Outstanding				0	0
Senior Notes, 3.800 Percent Due February 23, 2032
Debt Instrument [Line Items]
Long-term Debt, Current and Non-current, at Amortized Cost (Fair Value: 2022 - $1,195.1; 2021 - $1,152.1)								$ 395,100,000
5.875% Fixed-Rate Reset Junior Subordinated Debentures due 2062
Debt Instrument [Line Items]
Long-term Debt, Current and Non-current, at Amortized Cost (Fair Value: 2022 - $1,195.1; 2021 - $1,152.1)							$ 144,700,000
Senior Notes | 5.000% Senior Notes Due September 19, 2022
Debt Instrument [Line Items]
Long-term Debt, Current and Non-current, at Amortized Cost (Fair Value: 2022 - $1,195.1; 2021 - $1,152.1)				0	276,700,000
Redemption price, percentage	100%
Senior Notes | Senior Notes, 4.35 Percent Due February 15, 2025
Debt Instrument [Line Items]
Long-term Debt, Current and Non-current, at Amortized Cost (Fair Value: 2022 - $1,195.1; 2021 - $1,152.1)				$ 449,300,000	449,000,000
Stated interest rate, percentage				4.35%
Debt instrument, face amount												$ 250,000,000
Increase in debt instrument			$ 200,000,000
Long-term debt, gross				$ 450,000,000
Senior Notes | Senior Notes, 2.400 Percent Due September 30, 2030
Debt Instrument [Line Items]
Proceeds from debt, net of issuance costs				395,800,000
Long-term Debt, Current and Non-current, at Amortized Cost (Fair Value: 2022 - $1,195.1; 2021 - $1,152.1)				396,600,000	396,200,000
Stated interest rate, percentage									2.40%
Debt instrument, effective interest rate									2.52%
Long-term debt, gross				400,000,000
Senior Notes | Senior Notes, 3.800 Percent Due February 23, 2032
Debt Instrument [Line Items]
Long-term Debt, Current and Non-current, at Amortized Cost (Fair Value: 2022 - $1,195.1; 2021 - $1,152.1)				395,500,000	0
Stated interest rate, percentage								3.80%
Debt instrument, effective interest rate									3.95%
Long-term debt, gross				400,000,000
Senior Notes | 5.875% Fixed-Rate Reset Junior Subordinated Debentures due 2062
Debt Instrument [Line Items]
Long-term Debt, Current and Non-current, at Amortized Cost (Fair Value: 2022 - $1,195.1; 2021 - $1,152.1)				145,500,000	0
Long-term debt, gross				$ 150,000,000
Revolving Credit Facility | Notes Payable under Revolving Credit Agreement | Second Amended and Restated Credit Agreement
Debt Instrument [Line Items]
Maximum Capacity Amount		$ 800,000,000									$ 600,000,000
Increase in line of credit facility		200,000,000
Debt issuance costs		2,200,000
Unamortized debt issuance expense		$ 2,200,000
Line of credit, outstanding					$ 0
Infinity Property and Casualty Corporation | Senior Notes | 5.000% Senior Notes Due September 19, 2022
Debt Instrument [Line Items]
Stated interest rate, percentage										5%
Debt instrument, face amount										$ 275,000,000
Fair value of senior notes assumed										282,100,000
Unamortized premium										$ 7,100,000
Debt instrument, effective interest rate										4.36%

Debt - Debt Outstanding (Detail

Debt - Debt Outstanding (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Sep. 22, 2020
Debt Instrument [Line Items]
Long-term Debt, Current and Non-current, at Amortized Cost (Fair Value: 2022 - $1,195.1; 2021 - $1,152.1)	$ 1,386.9	$ 1,121.9
Senior Notes | 5.000% Senior Notes Due September 19, 2022
Debt Instrument [Line Items]
Long-term Debt, Current and Non-current, at Amortized Cost (Fair Value: 2022 - $1,195.1; 2021 - $1,152.1)	$ 0	276.7
Senior Notes | Senior Notes, 4.35 Percent Due February 15, 2025
Debt Instrument [Line Items]
Stated interest rate, percentage	4.35%
Long-term Debt, Current and Non-current, at Amortized Cost (Fair Value: 2022 - $1,195.1; 2021 - $1,152.1)	$ 449.3	449
Senior Notes | Senior Notes, 2.400 Percent Due September 30, 2030
Debt Instrument [Line Items]
Stated interest rate, percentage			2.40%
Long-term Debt, Current and Non-current, at Amortized Cost (Fair Value: 2022 - $1,195.1; 2021 - $1,152.1)	$ 396.6	$ 396.2

Leases - Narrative (Details)

Leases - Narrative (Details)	Dec. 31, 2022
Minimum | Building
Operating Leased Assets [Line Items]
Operating lease, term of contract	1 year
Minimum | Equipment
Operating Leased Assets [Line Items]
Operating lease, term of contract	1 year
Maximum | Building
Operating Leased Assets [Line Items]
Operating lease, term of contract	15 years
Maximum | Equipment
Operating Leased Assets [Line Items]
Operating lease, term of contract	5 years

Leases - Right of Use Assets an

Leases - Right of Use Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Operating Lease, Right of Use Asset	$ 45.1	$ 64.4
Operating Lease Liability	$ 72.6	$ 84.8
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other Assets	Other Assets
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Accrued Liabilities and Other Liabilities [Member]	Accrued Liabilities and Other Liabilities [Member]

Leases - Lease Cost (Details)

Leases - Lease Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Lease Cost
Amortization of Right-of-Use Assets - Finance Leases	$ 0	$ 0.2
Operating Lease, Cost	21.3	22.3
Variable Lease, Cost	0.3	0.2
Short-Term Lease Cost	3.8	5
Total Lease Expense	25.4	27.7
Less: Sublease Income	0.1	0.3
Lease, Cost	$ 25.3	$ 27.4

Leases - Supplemental Cash Flow

Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Operating Lease Payments	$ 24	$ 23.6
Operating lease, Liability Reduction	21.4	20.6
Finance Lease, Principal Payments	0	0.2
Right of Use Asset Obtained in Exchange for Operating Lease Liability	$ 9.7	$ 15.5

Leases - Lease Weighted Average

Leases - Lease Weighted Average (Details)	Dec. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Weighted Average Discount Rate, Finance Leases	0.60%	0.60%
Weighted Average Discount Rate, Operating Leases	3.60%	3.40%
Finance Lease, Weighted Average Remaining Lease Term	1 month 6 days	1 year

Leases - Future Minimum Lease P

Leases - Future Minimum Lease Payments (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Operating Leases
Due Next 12 Months	$ 23.4
Due Year Two	17.6
Due Year Three	12.8
Due Year Four	6.2
Due Year Five	3.9
Due after Year Five	17.9
Total Future Payments	81.8
Imputed Interest	9.2
Operating Lease, Liability	$ 72.6	$ 84.8

Catastrophe Reinsurance - Narra

Catastrophe Reinsurance - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Liability for Catastrophe Claims [Line Items]
Catastrophic events classification by amount	$ 25,000,000
Ceded earned premiums	42,700,000	$ 36,100,000	$ 31,200,000
Incurred losses and LAE related to prior year (favorable) adverse development	(14,600,000)	106,700,000	36,400,000
Catastrophe
Liability for Catastrophe Claims [Line Items]
Catastrophe Losses and LAE	75,200,000	102,400,000	106,900,000
Incurred losses and LAE related to prior year (favorable) adverse development	(4,100,000)	(5,400,000)	200,000
Catastrophe | Life & Health Insurance
Liability for Catastrophe Claims [Line Items]
Catastrophe Losses and LAE	3,300,000	12,900,000	12,900,000
Incurred losses and LAE related to prior year (favorable) adverse development	1,500,000	(100,000)	500,000
Catastrophe | Specialty Property & Casualty Insurance
Liability for Catastrophe Claims [Line Items]
Catastrophe Losses and LAE	23,600,000	16,000,000	12,500,000
Incurred losses and LAE related to prior year (favorable) adverse development	600,000	300,000	200,000
Catastrophe | Preferred Property & Casualty Insurance
Liability for Catastrophe Claims [Line Items]
Catastrophe Losses and LAE	48,300,000	73,500,000	81,500,000
Incurred losses and LAE related to prior year (favorable) adverse development	$ (6,200,000)	$ (5,600,000)	$ (500,000)

Catastrophe Reinsurance - Cover

Catastrophe Reinsurance - Coverage for Catastrophe Reinsurance (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
4th Layer of Coverage
Liability for Catastrophe Claims [Line Items]
Reinsurance retention policy, excess retention, percentage	95%
Minimum | 4th Layer of Coverage
Liability for Catastrophe Claims [Line Items]
Reinsurance retention policy, excess retention, amount reinsured	$ 325,000,000
Maximum | 4th Layer of Coverage
Liability for Catastrophe Claims [Line Items]
Reinsurance retention policy, excess retention, amount reinsured	$ 350,000,000
Property & Casualty Insurance Subsidiaries | Retained
Liability for Catastrophe Claims [Line Items]
Reinsurance retention policy, reinsured risk, percentage	0%	0%	0%
Property & Casualty Insurance Subsidiaries | 1st Layer of Coverage
Liability for Catastrophe Claims [Line Items]
Reinsurance retention policy, excess retention, percentage	95%	95%	95%
Property & Casualty Insurance Subsidiaries | 2nd Layer of Coverage
Liability for Catastrophe Claims [Line Items]
Reinsurance retention policy, excess retention, percentage	95%	95%
Property & Casualty Insurance Subsidiaries | 2nd Layer of Coverage
Liability for Catastrophe Claims [Line Items]
Reinsurance retention policy, excess retention, percentage			95%
Property & Casualty Insurance Subsidiaries | 3rd Layer of Coverage
Liability for Catastrophe Claims [Line Items]
Reinsurance retention policy, excess retention, percentage			95%
Property & Casualty Insurance Subsidiaries | Minimum
Liability for Catastrophe Claims [Line Items]
Reinsurance retention policy, amount retained	$ 0	$ 0
Reinsurance retention policy, excess retention, amount reinsured	65,000,000	60,000,000
Property & Casualty Insurance Subsidiaries | Minimum | Retained
Liability for Catastrophe Claims [Line Items]
Reinsurance retention policy, amount retained	0	0	$ 0
Property & Casualty Insurance Subsidiaries | Minimum | 1st Layer of Coverage
Liability for Catastrophe Claims [Line Items]
Reinsurance retention policy, excess retention, amount reinsured	50,000,000	50,000,000	50,000,000
Property & Casualty Insurance Subsidiaries | Minimum | 2nd Layer of Coverage
Liability for Catastrophe Claims [Line Items]
Reinsurance retention policy, excess retention, amount reinsured	150,000,000	150,000,000
Property & Casualty Insurance Subsidiaries | Minimum | 2nd Layer of Coverage
Liability for Catastrophe Claims [Line Items]
Reinsurance retention policy, excess retention, amount reinsured			150,000,000
Property & Casualty Insurance Subsidiaries | Minimum | 3rd Layer of Coverage
Liability for Catastrophe Claims [Line Items]
Reinsurance retention policy, excess retention, amount reinsured			250,000,000
Property & Casualty Insurance Subsidiaries | Maximum
Liability for Catastrophe Claims [Line Items]
Reinsurance retention policy, amount retained	65,000,000	60,000,000
Reinsurance retention policy, excess retention, amount reinsured	115,000,000	110,000,000
Property & Casualty Insurance Subsidiaries | Maximum | Retained
Liability for Catastrophe Claims [Line Items]
Reinsurance retention policy, amount retained	50,000,000	50,000,000	50,000,000
Property & Casualty Insurance Subsidiaries | Maximum | 1st Layer of Coverage
Liability for Catastrophe Claims [Line Items]
Reinsurance retention policy, excess retention, amount reinsured	150,000,000	150,000,000	150,000,000
Property & Casualty Insurance Subsidiaries | Maximum | 2nd Layer of Coverage
Liability for Catastrophe Claims [Line Items]
Reinsurance retention policy, excess retention, amount reinsured	$ 250,000,000	$ 250,000,000
Property & Casualty Insurance Subsidiaries | Maximum | 2nd Layer of Coverage
Liability for Catastrophe Claims [Line Items]
Reinsurance retention policy, excess retention, amount reinsured			250,000,000
Property & Casualty Insurance Subsidiaries | Maximum | 3rd Layer of Coverage
Liability for Catastrophe Claims [Line Items]
Reinsurance retention policy, excess retention, amount reinsured			$ 275,000,000
Kemper Preferred, Kemper Specialty and Kemper Direct Segments | 3rd Layer of Coverage
Liability for Catastrophe Claims [Line Items]
Reinsurance retention policy, excess retention, percentage	95%	95%
Kemper Preferred, Kemper Specialty and Kemper Direct Segments | Minimum | 3rd Layer of Coverage
Liability for Catastrophe Claims [Line Items]
Reinsurance retention policy, excess retention, amount reinsured	$ 250,000,000	$ 250,000,000
Kemper Preferred, Kemper Specialty and Kemper Direct Segments | Maximum | 3rd Layer of Coverage
Liability for Catastrophe Claims [Line Items]
Reinsurance retention policy, excess retention, amount reinsured	$ 325,000,000	$ 275,000,000

Catastrophe Reinsurance - Catas

Catastrophe Reinsurance - Catastrophe Reinsurance Premiums (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Liability for Catastrophe Claims [Line Items]
Ceded earned premiums	$ 42.7	$ 36.1	$ 31.2
Catastrophe Reinsurance
Liability for Catastrophe Claims [Line Items]
Ceded earned premiums	32	30.3	26.7
Specialty Property & Casualty Insurance | Catastrophe Reinsurance
Liability for Catastrophe Claims [Line Items]
Ceded earned premiums	8.9	7	4.8
Preferred Property & Casualty Insurance | Catastrophe Reinsurance
Liability for Catastrophe Claims [Line Items]
Ceded earned premiums	22.5	22	20.7
Life & Health Insurance | Catastrophe Reinsurance
Liability for Catastrophe Claims [Line Items]
Ceded earned premiums	$ 0.6	$ 1.3	$ 1.2

Catastrophe Reinsurance - Cat_2

Catastrophe Reinsurance - Catastrophe Losses and LAE (Details) - Catastrophe - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Liability for Catastrophe Claims [Line Items]
Catastrophe Losses and LAE	$ 75.2	$ 102.4	$ 106.9
Specialty Property & Casualty Insurance
Liability for Catastrophe Claims [Line Items]
Catastrophe Losses and LAE	23.6	16	12.5
Preferred Property & Casualty Insurance
Liability for Catastrophe Claims [Line Items]
Catastrophe Losses and LAE	48.3	73.5	81.5
Life & Health Insurance
Liability for Catastrophe Claims [Line Items]
Catastrophe Losses and LAE	$ 3.3	$ 12.9	$ 12.9

Other Reinsurance (Details)

Other Reinsurance (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) director employees	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Effects of Reinsurance [Line Items]
Ceded earned premiums	$ 42.7	$ 36.1	$ 31.2
Assumed earned premiums	26.3	34.7	50.8
Catastrophe Reinsurance
Effects of Reinsurance [Line Items]
Ceded earned premiums	32	30.3	26.7
Non-Catastrophe Reinsurance
Effects of Reinsurance [Line Items]
Assumed earned premiums	$ 41.4	56.7	73.8
Capitol County Mutual Fire Insurance Company
Effects of Reinsurance [Line Items]
Number of employee board members | employees	5
Number of board of director members | director	5
Old Reliable Casualty Company
Effects of Reinsurance [Line Items]
Number of employee board members | employees	9
Number of board of director members | director	9
Capitol County Mutual Fire Insurance Company
Effects of Reinsurance [Line Items]
Assumed earned premiums	$ 11.9	17.3	18.1
Capitol County Mutual Fire Insurance Company | Trinity
Effects of Reinsurance [Line Items]
Percentage of written business assumed	100%
Old Reliable Casualty Company
Effects of Reinsurance [Line Items]
Assumed earned premiums	$ 3.2	$ 4.7	$ 4.9
Old Reliable Casualty Company | Trinity
Effects of Reinsurance [Line Items]
Percentage of written business assumed	100%

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 0	$ 0	$ 0
Income taxes paid	700,000	38,000,000	55,800,000
Unrecognized tax benefits, income tax penalties and interest accrued	$ 0	$ 0	$ 0

Income Taxes - Schedule of Temp

Income Taxes - Schedule of Temporary Differences That Give Rise to Net Deferred Income Tax Assets (Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Deferred Income Tax Assets:
Insurance Reserves	$ 33.5	$ 31.9
Unearned Premium Reserves	70.8	78.3
Tax Capitalization of Policy Acquisition Costs	45.9	46.6
Payroll and Employee Benefit Accruals	32.8	36.4
Investments	152.2	0
Net Operating Loss and Credit Carryforwards	49.7	3.6
Other	22.6	11.6
Total Deferred Income Tax Assets	407.5	208.4
Deferred Income Tax Liabilities:
Investments	0	209.1
Deferred Policy Acquisition Costs	131.3	142.4
Life VIF and P&C Customer Relationships	3.7	4.6
Goodwill and Other Intangible Assets Acquired	36.9	38
Depreciable Assets	35.7	38.7
Other	10.5	2.6
Total Deferred Income Tax Liabilities	218.1	435.4
Net Deferred Income Tax (Assets)	$ 189.4
Net Deferred Income Tax Liabilities		$ (227)

Income Taxes - Summary of Feder

Income Taxes - Summary of Federal Net Operating Loss Carryforwards and Related Deferred Income Tax Assets (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Income Tax Contingency [Line Items]
Deferred Tax Asset	$ 49.7	$ 3.6
Internal Revenue Service (IRS)
Income Tax Contingency [Line Items]
NOL Carry-forwards	53.1
Deferred Tax Asset	49.7
operating loss carryforward, not subject to expiration	4.3
Deferred Tax Assets, Operating Loss Carryforwards, Not Subject to Expiration	0.9
Internal Revenue Service (IRS) | 2039
Income Tax Contingency [Line Items]
NOL Carry-forwards	1.4
Deferred Tax Asset	1.4
Internal Revenue Service (IRS) | 2040
Income Tax Contingency [Line Items]
NOL Carry-forwards	1.4
Deferred Tax Asset	1.4
Internal Revenue Service (IRS) | 2041
Income Tax Contingency [Line Items]
NOL Carry-forwards	46
Deferred Tax Asset	$ 46

Income Taxes - Income Tax Benef

Income Taxes - Income Tax Benefit (Expense) from Continuing Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Current Income Tax Benefit (Expense)	$ (6.2)	$ 122.7	$ (86.6)
Deferred Income Tax Benefit (Expense)	94.5	2.1	(13.6)
Income Tax Benefit (Expense)	$ 88.3	$ 124.8	$ (100.2)

Income Taxes - Statutory Federa

Income Taxes - Statutory Federal Income Tax Expense, Effective Income Tax Expense, Rates (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Amount
Statutory Federal Income Tax Benefit (Expense)	$ 81.8	$ 51.5	$ (107.1)
Tax-exempt Income and Dividends Received Deduction	$ 5.3	$ 4.6	$ 4
Effective Income Tax Rate Reconciliation, Untaxed Earnings on Company-Owned Life Insurance, Percent	2.10%	2.20%	(0.50%)
Effective Income Tax Reconciliation, Untaxed Earnings on Company-Owned Life Insurance, amount	$ 8	$ 5.4	$ 2.7
Effective Income Tax Rate Reconciliation, Tax Credit, Investment, Percent	1.70%	27%	(0.60%)
Effective Income Tax Rate Reconciliation, Tax Credit, Investment, Amount	$ 6.5	$ 66.1	$ 3.2
Stock-Based Compensation	(1.3)	0.3	2.2
Nondeductible Executive Compensation	(1.5)	(2.7)	(2.7)
Expense on Transactions	(11.5)	0	0
Other, Net	1	(0.4)	(2.5)
Income Tax Benefit (Expense)	$ 88.3	$ 124.8	$ (100.2)
Rate
Statutory Federal Income Tax Benefit (Expense)	21%	21%	21%
Tax-exempt Income and Dividends Received Deduction	1.30%	1.90%	(0.80%)
Stock-Based Compensation	0.30%	(0.10%)	0.50%
Nondeductible Executive Compensation	0.40%	1.10%	(0.50%)
Expense on Transactions	3%	0%	0%
Other, Net	(0.30%)	0.20%	(0.50%)
Effective Income Tax Benefit (Expense)	22.70%	50.90%	19.60%

Income Taxes - Comprehensive In

Income Taxes - Comprehensive Income Tax Benefit and Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating Loss Carryforwards [Line Items]
Income Tax Benefit (Expense)	$ 88.3	$ 124.8	$ (100.2)
Unrealized Depreciation (Appreciation) on Securities	325.5	(60.1)	(78.3)
Tax Effects from Postretirement Benefit Plans	(4)	(2.4)	(15.3)
Tax Effects from Cash Flow Hedge	(1.2)	0.1	0
Comprehensive Income Tax Benefit (Expense)	408.6	62.4	(193.8)
Operations
Operating Loss Carryforwards [Line Items]
Income Tax Benefit (Expense)	$ 88.3	$ 124.8	$ (100.2)

Schedule 1 - Investments Othe_2

Schedule 1 - Investments Other Than Investments in Related Parties (Details) $ in Millions	Dec. 31, 2022 USD ($)
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Amortized Cost	$ 9,706.5
Amount Carried in Balance Sheet	8,789.5
Fixed Maturities:
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Amortized Cost	7,811.8
Fair Value	6,894.8
Amount Carried in Balance Sheet	6,894.8
United States Government and Government Agencies and Authorities
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Amortized Cost	612.5
Fair Value	528
Amount Carried in Balance Sheet	528
States and Political Subdivisions
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Amortized Cost	1,797.6
Fair Value	1,568.9
Amount Carried in Balance Sheet	1,568.9
Foreign Governments
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Amortized Cost	5
Fair Value	4.1
Amount Carried in Balance Sheet	4.1
Other Bonds and Notes
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Amortized Cost	4,030.3
Fair Value	3,539.4
Amount Carried in Balance Sheet	3,539.4
Redeemable Preferred Stocks
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Amortized Cost	9
Fair Value	8
Amount Carried in Balance Sheet	8
Collateralized Loan Obligations
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Amortized Cost	1,014.7
Fair Value	953.9
Amount Carried in Balance Sheet	953.9
Other Mortgage- and Asset-backed
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Amortized Cost	342.7
Fair Value	292.5
Amount Carried in Balance Sheet	292.5
Equity Securities at Fair Value:
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Amortized Cost	243.2
Fair Value	243.2
Amount Carried in Balance Sheet	243.2
Preferred Stocks
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Amortized Cost	39.8
Fair Value	39.8
Amount Carried in Balance Sheet	39.8
Common Stock
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Amortized Cost	2.1
Fair Value	2.1
Amount Carried in Balance Sheet	2.1
Other Equity Interests
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Amortized Cost	201.3
Fair Value	201.3
Amount Carried in Balance Sheet	201.3
Equity Method Limited Liability Investments at Cost Plus Cumulative Undistributed Earnings
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Amortized Cost	217
Amount Carried in Balance Sheet	217
Other Investments
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Amortized Cost	269.9
Amount Carried in Balance Sheet	269.9
Short-term Investments
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Amortized Cost	278.4
Amount Carried in Balance Sheet	278.4
Alternative Energy Partnership Investments
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Amortized Cost	16.3
Amount Carried in Balance Sheet	16.3
Company-Owned Life Insurance
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Amortized Cost	586.5
Amount Carried in Balance Sheet	586.5
Loans to Policyholders
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Amortized Cost	283.4
Amount Carried in Balance Sheet	$ 283.4

Schedule 2 - Parent Company F_4

Schedule 2 - Parent Company Financial Statements - Balance Sheets (Details) - USD ($) $ in Millions	Dec. 31, 2022	Mar. 10, 2022	Feb. 15, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
ASSETS
Amortized cost of fixed maturities	$ 7,811.8			$ 7,358.2
Fixed Maturities at Fair Value (Amortized Cost: 2022 – $122.5; 2021 - $0.3)	6,894.8			7,986.9
Cost of equity securities	247.6			618.7
Equity Securities at Fair Value (Cost: 2022 - $39.3; 2021 - $106.8)	243.2			830.6
Other Investments and Securities, at Cost	38.4			32.3
Cash	212.4			148.2
Other Receivables	262.6			207.3
Current Income Taxes	167.6			173.1
Right-of-Use Assets	45.1			64.4
Other Assets	530			592.2
Total Assets	13,364			14,916.5
LIABILITIES AND SHAREHOLDERS’ EQUITY
Long-term Debt, Current and Non-current, at Amortized Cost (Fair Value: 2022 - $1,195.1; 2021 - $1,152.1)	1,386.9			1,121.9
Long-term Debt	1,195.1			1,152.1
Deferred Income Tax Liabilities	0			227
Operating Lease, Liability	72.6			84.8
Accrued Expenses and Other Liabilities	817.3			843.6
Total Liabilities	10,920.8			10,908.8
Shareholders’ Equity:
Common Stock	6.4			6.4
Additional Paid-in Capital	1,812.7			1,790.7
Retained Earnings	1,380.1			1,762.5
Accumulated Other Comprehensive (Loss) Income	(756)			448.1
Total Shareholders’ Equity	2,443.2			4,007.7
Total Liabilities and Shareholders’ Equity	13,364			14,916.5
Senior Notes, 4.35 Percent Due February 15, 2025 | Senior Notes
LIABILITIES AND SHAREHOLDERS’ EQUITY
Long-term Debt, Current and Non-current, at Amortized Cost (Fair Value: 2022 - $1,195.1; 2021 - $1,152.1)	449.3			449
Senior Notes, 2.400 Percent Due September 30, 2030 | Senior Notes
LIABILITIES AND SHAREHOLDERS’ EQUITY
Long-term Debt, Current and Non-current, at Amortized Cost (Fair Value: 2022 - $1,195.1; 2021 - $1,152.1)	396.6			396.2
5.875% Fixed-Rate Reset Junior Subordinated Debentures due 2062
LIABILITIES AND SHAREHOLDERS’ EQUITY
Long-term Debt, Current and Non-current, at Amortized Cost (Fair Value: 2022 - $1,195.1; 2021 - $1,152.1)		$ 144.7
5.875% Fixed-Rate Reset Junior Subordinated Debentures due 2062 | Senior Notes
LIABILITIES AND SHAREHOLDERS’ EQUITY
Long-term Debt, Current and Non-current, at Amortized Cost (Fair Value: 2022 - $1,195.1; 2021 - $1,152.1)	145.5			0
Senior Notes, 3.800 Percent Due February 23, 2032
LIABILITIES AND SHAREHOLDERS’ EQUITY
Long-term Debt, Current and Non-current, at Amortized Cost (Fair Value: 2022 - $1,195.1; 2021 - $1,152.1)			$ 395.1
Senior Notes, 3.800 Percent Due February 23, 2032 | Senior Notes
LIABILITIES AND SHAREHOLDERS’ EQUITY
Long-term Debt, Current and Non-current, at Amortized Cost (Fair Value: 2022 - $1,195.1; 2021 - $1,152.1)	395.5			0
Parent Company
ASSETS
Investments in Subsidiaries	3,621.6			4,729.1
Amortized cost of fixed maturities	122.5			0.3
Fixed Maturities at Fair Value (Amortized Cost: 2022 – $122.5; 2021 - $0.3)	120			0.4
Cost of equity securities	39.3			106.8
Equity Securities at Fair Value (Cost: 2022 - $39.3; 2021 - $106.8)	24.1			107.4
Short-term Investments	67.7			96.9
Cash	66.3			27.7	$ 46	$ 61.8
Other Receivables	5.6			2.3
Current Income Taxes	12			0
Right-of-Use Assets	12.2			12.8
Other Assets	35.6			18.9
Total Assets	3,965.1			4,995.5
LIABILITIES AND SHAREHOLDERS’ EQUITY
Current Income Tax Liability	0			18.5
Deferred Income Tax Liabilities	49.1			46.5
Liabilities for Benefit Plans	35.4			42.3
Operating Lease, Liability	24.4			25.8
Accrued Expenses and Other Liabilities	26.1			9.5
Total Liabilities	1,521.9			987.8
Shareholders’ Equity:
Common Stock	6.4			6.4
Additional Paid-in Capital	1,812.7			1,790.7
Retained Earnings	1,380.1			1,762.5
Accumulated Other Comprehensive (Loss) Income	(756)			448.1
Total Shareholders’ Equity	2,443.2			4,007.7
Total Liabilities and Shareholders’ Equity	3,965.1			4,995.5
Parent Company | Senior Notes, 4.35 Percent Due February 15, 2025
LIABILITIES AND SHAREHOLDERS’ EQUITY
Long-term Debt, Current and Non-current, at Amortized Cost (Fair Value: 2022 - $1,195.1; 2021 - $1,152.1)	449.3			449
Parent Company | Senior Notes, 4.35 Percent Due February 15, 2025 | Senior Notes
LIABILITIES AND SHAREHOLDERS’ EQUITY
Long-term Debt	438.5			481.4
Parent Company | Senior Notes, 2.400 Percent Due September 30, 2030
LIABILITIES AND SHAREHOLDERS’ EQUITY
Long-term Debt, Current and Non-current, at Amortized Cost (Fair Value: 2022 - $1,195.1; 2021 - $1,152.1)	396.6			396.2
Parent Company | Senior Notes, 2.400 Percent Due September 30, 2030 | Senior Notes
LIABILITIES AND SHAREHOLDERS’ EQUITY
Long-term Debt	310.3			387.8
Parent Company | 5.875% Fixed-Rate Reset Junior Subordinated Debentures due 2062
LIABILITIES AND SHAREHOLDERS’ EQUITY
Long-term Debt, Current and Non-current, at Amortized Cost (Fair Value: 2022 - $1,195.1; 2021 - $1,152.1)	145.5			0
Parent Company | Senior Notes, 3.800 Percent Due February 23, 2032
LIABILITIES AND SHAREHOLDERS’ EQUITY
Long-term Debt, Current and Non-current, at Amortized Cost (Fair Value: 2022 - $1,195.1; 2021 - $1,152.1)	395.5			0
Parent Company | Senior Notes, 3.800 Percent Due February 23, 2032 | Senior Notes
LIABILITIES AND SHAREHOLDERS’ EQUITY
Long-term Debt	336.2			0
Parent Company | Senior Notes, 5.875 Percent Due March 15, 2062 | Junior Debt
LIABILITIES AND SHAREHOLDERS’ EQUITY
Long-term Debt	$ 110.1			$ 0

Schedule 2 - Parent Company F_5

Schedule 2 - Parent Company Financial Statements - Statements of Income (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Condensed Income Statements, Captions [Line Items]
Net Investment Income		$ 422.6	$ 427.3	$ 348.2
(Loss) Income from Change in Fair Value of Equity and Convertible Securities		(79.9)	114.6	72.1
Net Realized Investment Gains		4.3	64.8	38.1
Net Impairment Losses Recognized in Earnings		(25.8)	(11)	(19.5)
Other Income		9.2	4.8	94.6
Total Revenues		5,576.8	5,793	5,205.7
Interest Expense		54.7	43.6	36
Loss from Early Extinguishment of Debt		3.7	0	0
Total Expenses		5,966.3	6,038.3	4,695.6
Income Tax Benefit (Expense)		88.3	124.8	(100.2)
Net (Loss) Income		(301.2)	(120.5)	409.9
Parent Company
Condensed Income Statements, Captions [Line Items]
Net Investment Income		16.6	3.4	1.4
(Loss) Income from Change in Fair Value of Equity and Convertible Securities		(14.8)	10	4.3
Net Realized Investment Gains		3	10.6	0.1
Net Impairment Losses Recognized in Earnings	$ (0.2)	(0.2)	0	0
Other Income		1.1	0	0
Total Revenues		5.7	24	5.8
Interest Expense		52.6	32	24.2
Pension Obligation Settlement Costs		0	0	64.1
Other Operating Expenses (Benefits)		6.6	5.9	(3.6)
Total Expenses		59.2	37.9	84.7
Loss before Income Taxes and Equity in Net (Loss) Income of Subsidiaries		(53.5)	(13.9)	(78.9)
Income Tax Benefit (Expense)		14	(0.6)	13.4
Loss before Equity in Net Loss of Subsidiaries		(39.5)	(14.5)	(65.5)
Equity in Net (Loss) Income of Subsidiaries		(261.7)	(106)	475.4
Net (Loss) Income		$ (301.2)	$ (120.5)	$ 409.9

Schedule 2 - Parent Company F_6

Schedule 2 - Parent Company Financial Statements - Statements of Comprehensive Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Condensed Statement of Income Captions [Line Items]
Net (Loss) Income	$ (301.2)	$ (120.5)	$ 409.9
Reclassification Adjustments for Amounts Included in Net (Loss) Income:
Net Unrecognized Postretirement Benefit Costs	18.9	(8.8)	70.2
Gains on Cash Flow Hedge	5.9	0.5	0.4
Other Comprehensive (Loss) Income Before Income Taxes	(1,524.4)	(294.8)	437.9
Reclassification Adjustment for Amounts Included in Net (Loss) Income:
Unrealized Holding Gains and Losses	325.5	(60.1)	(78.3)
Reclassification Adjustments for Amounts Included in Net (Loss) Income:
Changes in Gain on Cash Flow Hedges	(5.9)	(0.5)	(0.4)
Other Comprehensive Income Tax Benefit (Expense)	320.3	62.4	(93.5)
Other Comprehensive (Loss) Income, Net of Taxes	(1,204.1)	(232.4)	344.4
Total Comprehensive (Loss) Income	(1,505.3)	(352.9)	754.3
Credit Losses
Reclassification Adjustment for Amounts Included in Net (Loss) Income:
Changes in Net Unrealized Holding Gains (Losses) on Investment Securities	1.9	(2)	(2.6)
No Credit Losses
Reclassification Adjustment for Amounts Included in Net (Loss) Income:
Changes in Net Unrealized Holding Gains (Losses) on Investment Securities	(1,551.1)	(284.5)	369.9
Subsidiaries
Reclassification Adjustment for Amounts Included in Net (Loss) Income:
Reclassification Adjustment for Amounts Included in Net Income	(12.8)	(43.5)	(16.6)
Unrecognized Postretirement Benefit Costs Arising During the Year	1.1	0.6	0
Reclassification Adjustment for Amounts Included in Net (Loss) Income:
Reclassification Adjustment for Amounts Included in Net Income	2.7	9.1	3.5
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax	(0.2)	(0.1)	0
Subsidiaries | Credit Losses
Changes in Net Unrealized (Losses) Gains on Investment Securities:
Unrealized Holding Gains (Losses) Arising During the Period Before Reclassification Adjustment	1.9	(2)	(2.6)
Changes in Net Unrealized (Losses) Gains on Investment Securities:
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, Tax	(0.4)	0.4	0.5
Subsidiaries | No Credit Losses
Changes in Net Unrealized (Losses) Gains on Investment Securities:
Unrealized Holding Gains (Losses) Arising During the Period Before Reclassification Adjustment	(1,535.7)	(230.4)	378.7
Changes in Net Unrealized (Losses) Gains on Investment Securities:
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, Tax	322.7	48.4	(80.6)
Parent Company
Condensed Statement of Income Captions [Line Items]
Net (Loss) Income	(301.2)	(120.5)	409.9
Reclassification Adjustment for Amounts Included in Net (Loss) Income:
Reclassification Adjustment for Amounts Included in Net Income	0	(10.6)	(0.1)
Unrecognized Postretirement Benefit Costs Arising During the Year	18.2	(9.5)	3.6
Amortization of Accumulated Unrecognized Pension Loss	0	0	64.1
Reclassification Adjustments for Amounts Included in Net (Loss) Income:
Amortization of Unrecognized Postretirement Benefit Costs	(0.4)	0.1	2.5
Gains on Cash Flow Hedge	5.9	0.5	0.4
Other Comprehensive (Loss) Income Before Income Taxes	(1,524.4)	(294.8)	438
Reclassification Adjustment for Amounts Included in Net (Loss) Income:
Reclassification Adjustment for Amounts Included in Net Income	0	2.2	0
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax	(3.9)	2.5	(1.3)
Reclassification Adjustments for Amounts Included in Net (Loss) Income:
Pension Settlement Cost Recognized	0	0	(13.5)
Amortization of Unrecognized Postretirement Benefit Costs	0.1	0	(0.5)
Changes in Gain on Cash Flow Hedges	(1.2)	(0.1)	0
Changes in Gain on Cash Flow Hedges	(5.9)	(0.5)	(0.4)
Other Comprehensive Income Tax Benefit (Expense)	320.3	62.4	(93.6)
Other Comprehensive (Loss) Income, Net of Taxes	(1,204.1)	(232.4)	344.4
Total Comprehensive (Loss) Income	(1,505.3)	(352.9)	754.3
Pension Obligation Settlement Costs	0	0	64.1
Parent Company | No Credit Losses
Changes in Net Unrealized (Losses) Gains on Investment Securities:
Unrealized Holding Gains (Losses) Arising During the Period Before Reclassification Adjustment	(2.6)	0	8
Changes in Net Unrealized (Losses) Gains on Investment Securities:
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, Tax	$ 0.5	$ 0	$ (1.7)

Schedule 2 - Parent Company F_7

Schedule 2 - Parent Company Financial Statements - Statements of Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash Flows from Operating Activities:
Net (Loss) Income		$ (301.2)	$ (120.5)	$ 409.9
Adjustments to Reconcile Net (Loss) Income to Net Cash (Used in) Provided by Operating Activities:
Income (Loss) from Change in Fair Value of Equity and Convertible Securities		79.9	(114.6)	(72.1)
Net Realized Gain on Sale of Investments		(4.3)	(64.8)	(38.1)
Impairment Losses		25.8	11	19.5
Loss from Early Extinguishment of Debt		3.7	0	0
Other Assets and Liabilities		(11.2)	89.1	(27.8)
Net Cash (Used in) Provided by Operating Activities		(210.3)	350.7	448
Cash Flows from Investing Activities:
Proceeds from the Sales, Calls and Maturities of Fixed Maturities		1,295.5	1,388.9	972.4
Fixed Maturities		(1,815.8)	(1,825.4)	(1,293.3)
Equity Securities		(58.9)	(124.3)	(319.1)
Net Sales (Purchases) of Short-term Investments		6.1	687.2	(390.8)
Equity Securities		536	316.6	434.4
Acquisition of Business		0	(316.6)	0
Other Investments		(13)	(104.9)	(43.5)
Net Cash (Used in) Provided by Investing Activities		(108.4)	(118.2)	(757)
Cash Flows from Financing Activities:
Proceeds from Issuance of 5.875% Fixed-Rate Reset Junior Subordinated Debentures Due 2062		145.6	0	0
Repayments of Long-term Debt		(280)	(50)	0
Dividends Paid		(79.7)	(80.6)	(78.9)
Proceeds from Shares Issued under Employee Stock Purchase Plan		4.9	5.4	4.4
Common Stock Repurchases		0	(161.7)	(110.4)
Other		0.6	3.7	5
Net Cash Provided by (Used in) Financing Activities		382.9	(290.4)	378.3
Net increase (decrease) in cash		64.2	(57.9)	69.3
Cash, Beginning of Year		148.2
Cash, End of Year	$ 212.4	212.4	148.2
Senior Notes, 3.800 Percent Due February 23, 2032
Cash Flows from Financing Activities:
Proceeds from Issuance of 3.800% Senior Notes due February 23, 2032		396.3	0	0
Issue Fess		(1.2)	0	0
5.875% Fixed-Rate Reset Junior Subordinated Debentures due 2062
Cash Flows from Financing Activities:
Issue Fess		(0.9)	0	0
Senior Notes, 2.400 Percent Due September 30, 2030
Cash Flows from Financing Activities:
Proceeds from Issuance of 3.800% Senior Notes due February 23, 2032		0	0	396.8
Issue Fess		0	0	(1.2)
Parent Company
Cash Flows from Operating Activities:
Net (Loss) Income		(301.2)	(120.5)	409.9
Adjustments to Reconcile Net (Loss) Income to Net Cash (Used in) Provided by Operating Activities:
Equity in Net Income (Loss) of Subsidiaries		261.7	106	(475.4)
Cash Dividends from Subsidiaries		25.3	170.3	216.2
Income (Loss) from Change in Fair Value of Equity and Convertible Securities		14.8	(10)	(4.3)
Net Realized Gain on Sale of Investments		(3)	(10.6)	(0.1)
Settlement Costs Related to Defined Benefit Pension Plan	0		0	64.1
Impairment Losses	0.2	0.2	0	0
Other Assets and Liabilities		(48.9)	(35.3)	52.2
Net Cash (Used in) Provided by Operating Activities		(51.1)	99.9	262.6
Cash Flows from Investing Activities:
Capital Contributed to Subsidiaries		(537.8)	(36.5)	(62)
Proceeds from the Sales, Calls and Maturities of Fixed Maturities		0.1	181.3	2
Fixed Maturities		(40.3)	0	0
Equity Securities		(5.6)	(48.7)	(21)
Net Sales (Purchases) of Short-term Investments		138.9	411.3	(415.7)
Equity Securities		71.9	28.5	2.2
Acquisition of Business		0	(370.9)	0
Other Investments		(3.1)	0	0
Net Cash (Used in) Provided by Investing Activities		(375.9)	165	(494.5)
Cash Flows from Financing Activities:
Repayments of Long-term Debt		0	(50)	0
Dividends Paid		(79.7)	(80.6)	(78.9)
Proceeds from Shares Issued under Employee Stock Purchase Plan		4.9	5.4	4.4
Common Stock Repurchases		0	(161.7)	(110.4)
Other		0.6	3.7	5.4
Net Cash Provided by (Used in) Financing Activities		465.6	(283.2)	216.1
Net increase (decrease) in cash		38.6	(18.3)	(15.8)
Cash, Beginning of Year		27.7	46	61.8
Cash, End of Year	$ 66.3	66.3	27.7	46
Parent Company | Senior Notes, 3.800 Percent Due February 23, 2032
Cash Flows from Financing Activities:
Proceeds from Issuance of 3.800% Senior Notes due February 23, 2032		396.3	0	0
Issue Fess		(1.2)	0	0
Parent Company | 5.875% Fixed-Rate Reset Junior Subordinated Debentures due 2062
Cash Flows from Financing Activities:
Issue Fess		(0.9)	0	0
Proceeds from Issuance of 5.875% Fixed-Rate Reset Junior Subordinated Debentures Due 2062		145.6	0	0
Parent Company | Senior Notes, 2.400 Percent Due September 30, 2030
Cash Flows from Financing Activities:
Proceeds from Issuance of 3.800% Senior Notes due February 23, 2032		0	0	396.8
Issue Fess		$ 0	$ 0	$ (1.2)

Schedule 2 - Parent Company F_8

Schedule 2 - Parent Company Financial Statements - Narrative (Details) $ in Millions			12 Months Ended
	Mar. 10, 2022 deferral_period	Feb. 23, 2022	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jul. 01, 2022 USD ($)	Jul. 02, 2018
Condensed Financial Statements, Captions [Line Items]
Guarantor obligations			$ 5
Kemper Bermuda Ltd
Condensed Financial Statements, Captions [Line Items]
Guarantor obligations					$ 300
5.000% Senior Notes Due September 19, 2022 | Senior Notes
Condensed Financial Statements, Captions [Line Items]
Redemption price, percentage		100%
5.000% Senior Notes Due September 19, 2022 | Senior Notes | Infinity Property and Casualty Corporation
Condensed Financial Statements, Captions [Line Items]
Stated interest rate, percentage						5%
Senior Notes, 5.875 Percent Due March 15, 2062 | Junior Debt
Condensed Financial Statements, Captions [Line Items]
Stated interest rate, percentage	5.875%
Interest deferrals, number of deferral periods | deferral_period	1
Interest deferrals, period (up to)	5 years
Senior Notes, 5.875 Percent Due March 15, 2062 | Junior Debt | Five-Year Treasury Rate
Condensed Financial Statements, Captions [Line Items]
Debt instrument, basis spread on variable rate	4.14%
Subsidiary of Common Parent | Non-cash Dividends
Condensed Financial Statements, Captions [Line Items]
Related party transaction, amounts of transaction			300.1	$ 189
Parent Company | Non-cash Capital Contributions
Condensed Financial Statements, Captions [Line Items]
Related party transaction, amounts of transaction			$ 156.3	$ 103.3

Schedule 2 - Parent Company F_9

Schedule 2 - Parent Company Financial Statements - Right of Use Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Condensed Financial Statements, Captions [Line Items]
Operating Lease, Right of Use Asset	$ 45.1	$ 64.4
Operating Lease, Liability	72.6	84.8
Parent Company
Condensed Financial Statements, Captions [Line Items]
Operating Lease, Right of Use Asset	12.2	12.8
Operating Lease, Liability	$ 24.4	$ 25.8

Schedule 2 - Parent Company _10

Schedule 2 - Parent Company Financial Statements - Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Condensed Financial Statements, Captions [Line Items]
Operating Lease Payments	$ 24	$ 23.6
Operating lease, Liability Reduction	21.4	20.6
Finance Lease, Principal Payments	0	0.2
Parent Company
Condensed Financial Statements, Captions [Line Items]
Operating Lease Payments	2.4	2.2
Operating lease, Liability Reduction	1.4	1.1
Finance Lease, Principal Payments	$ 0	$ 0

Schedule 2 - Parent Company _11

Schedule 2 - Parent Company Financial Statements - Lease Weighted Average (Details)	Dec. 31, 2022	Dec. 31, 2021
Condensed Financial Statements, Captions [Line Items]
Weighted Average Remaining Lease Term, Operating Lease	5 years 7 months 6 days	5 years 9 months 18 days
Weighted Average Discount Rate, Operating Leases	3.60%	3.40%
Parent Company
Condensed Financial Statements, Captions [Line Items]
Weighted Average Remaining Lease Term, Operating Lease	11 years	11 years 10 months 24 days
Weighted Average Discount Rate, Operating Leases	4%	4%

Schedule 2 - Parent Company _12

Schedule 2 - Parent Company Financial Statements - Future Minimum Lease Payments (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Condensed Financial Statements, Captions [Line Items]
Due Next 12 Months	$ 23.4
Due Year Two	17.6
Due Year Three	12.8
Due Year Four	6.2
Due Year Five	3.9
Due after Year Five	17.9
Total Future Payments	81.8
Imputed Interest	9.2
Operating Lease, Liability	72.6	$ 84.8
Parent Company
Condensed Financial Statements, Captions [Line Items]
Due Next 12 Months	2.4
Due Year Two	2.5
Due Year Three	2.6
Due Year Four	2.6
Due Year Five	2.7
Due after Year Five	17.7
Total Future Payments	30.5
Imputed Interest	6.1
Operating Lease, Liability	$ 24.4	$ 25.8

Schedule 3 - Supplementary In_2

Schedule 3 - Supplementary Insurance Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
Earned Premiums	$ 5,266.3	$ 5,253.7	$ 4,672.2
Other Income	9.2	4.8	94.6
Net Investment Income	422.6	427.3	348.2
Insurance Claims and Policy- holders’ Benefits	4,504.4	4,600.8	3,323.6
Amortization of Deferred Policy Acquisition Costs	705.3	684.3	641.8
Other Insurance Expenses	495.3	533.8	458.7
Deferred Policy Acquisition Costs	625.6	677.6
Insurance Reserves	6,310.9	6,313.6
Unearned Premiums	1,704.4	1,898.7
Specialty Property & Casualty Insurance
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
Earned Premiums	4,046.4	3,948.5	3,335.3
Premiums Written	3,934.4	4,057.3	3,435.5
Other Income	6	4.1	1.8
Net Investment Income	140.7	152.5	114.1
Insurance Claims and Policy- holders’ Benefits	3,578.2	3,593.7	2,378.4
Amortization of Deferred Policy Acquisition Costs	569.8	546.7	497.5
Other Insurance Expenses	232.1	227.8	154.4
Deferred Policy Acquisition Costs	192.6	219
Insurance Reserves	2,321.1	2,319.7
Unearned Premiums	1,431.5	1,545.9
Preferred Property & Casualty Insurance
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
Earned Premiums	595.5	651.7	688.2
Premiums Written	527.1	642	653
Other Income	0	0	0.1
Net Investment Income	49.7	68.6	37.7
Insurance Claims and Policy- holders’ Benefits	493.4	537.4	503.1
Amortization of Deferred Policy Acquisition Costs	93.5	103.8	111.2
Other Insurance Expenses	90	102.6	109.9
Deferred Policy Acquisition Costs	38.1	49.2
Insurance Reserves	419.1	433.2
Unearned Premiums	264	331.6
Life & Health Insurance
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
Earned Premiums	624.4	653.5	648.7
Other Income	(0.6)	(1.3)	0.6
Net Investment Income	216.5	202.7	198.8
Insurance Claims and Policy- holders’ Benefits	432.6	469.7	442
Amortization of Deferred Policy Acquisition Costs	42	33.8	33.1
Other Insurance Expenses	300.9	325.1	301.8
Deferred Policy Acquisition Costs	394.9	409.4
Insurance Reserves	3,556.3	3,544.5
Unearned Premiums	8.9	21.2
Other
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
Earned Premiums	0	0	0
Other Income	3.8	2	92.1
Net Investment Income	15.7	3.5	(2.4)
Insurance Claims and Policy- holders’ Benefits	0.2	0	0.1
Amortization of Deferred Policy Acquisition Costs	0	0	0
Other Insurance Expenses	(127.7)	(121.7)	$ (107.4)
Deferred Policy Acquisition Costs	0	0
Insurance Reserves	14.4	16.2
Unearned Premiums	$ 0	$ 0

Schedule 4 - Reinsurance Sche_2

Schedule 4 - Reinsurance Schedule (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Life Insurance in Force
Gross Amount	$ 19,885.1	$ 20,287.7	$ 19,706.2
Ceded to Other Companies	354.8	372.3	387.7
Assumed from Other Companies	137.1	144.5	152.3
Net Amount	$ 19,667.4	$ 20,059.9	$ 19,470.8
Percentage of Amount Assumed to Net	0.70%	0.70%	0.80%
Premiums
Gross Amount	$ 5,282.7	$ 5,255.1	$ 4,652.6
Ceded to Other Companies	42.7	36.1	31.2
Assumed from Other Companies	26.3	34.7	50.8
Net Amount	$ 5,266.3	$ 5,253.7	$ 4,672.2
Percentage of Amount Assumed to Net	0.50%	0.70%	1.10%
Life Insurance
Premiums
Gross Amount	$ 408.7	$ 401.9	$ 386
Ceded to Other Companies	3.6	0.9	1.1
Assumed from Other Companies	0.6	0.7	0.8
Net Amount	$ 405.7	$ 401.7	$ 385.7
Percentage of Amount Assumed to Net	0.10%	0.20%	0.20%
Accident and Health Insurance
Premiums
Gross Amount	$ 167.9	$ 185.8	$ 195.5
Ceded to Other Companies	1.1	0.3	1.6
Assumed from Other Companies	1.4	4.4	5.4
Net Amount	$ 168.2	$ 189.9	$ 199.3
Percentage of Amount Assumed to Net	0.80%	2.30%	2.70%
Property and Liability Insurance
Premiums
Gross Amount	$ 4,706.1	$ 4,667.4	$ 4,071.1
Ceded to Other Companies	38	34.9	28.5
Assumed from Other Companies	24.3	29.6	44.6
Net Amount	$ 4,692.4	$ 4,662.1	$ 4,087.2
Percentage of Amount Assumed to Net	0.50%	0.60%	1.10%