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Investments (Tables)
9 Months Ended
Sep. 30, 2022
Debt Securities, Available-for-sale [Line Items]  
Investments Classified by Contractual Maturity Date
The amortized cost and estimated fair values of the Company’s Investments in Fixed Maturities at September 30, 2022 by contractual maturity were:
(Dollars in Millions)Amortized CostFair Value
Due in One Year or Less$192.3 $188.5 
Due after One Year to Five Years937.6 893.3 
Due after Five Years to Ten Years1,339.7 1,156.2 
Due after Ten Years3,407.5 2,797.4 
Mortgage- and Asset-backed Securities Not Due at a Single Maturity Date1,819.3 1,643.7 
Investments in Fixed Maturities (1)$7,696.4 $6,679.1 
(1) Includes securities classified as Held-for-Sale Assets on the Condensed Consolidated Balance Sheets. See Note 4, “Dispositions,” for more information.
Schedule of Unrealized Loss on Investments
An aging of unrealized losses on the Company’s Investments in Fixed Maturities at September 30, 2022 is presented below.
 Less Than 12 Months12 Months or LongerTotal
(Dollars in Millions)Fair
Value
Unrealized
Losses
Fair
Value
Unrealized
Losses
Fair
Value
Unrealized
Losses
Fixed Maturities:
U.S. Government and Government Agencies and Authorities$427.0 $(79.0)$33.3 $(8.2)$460.3 $(87.2)
States and Political Subdivisions1,095.5 (221.7)123.5 (44.7)1,219.0 (266.4)
Foreign Governments1.9 (0.1)1.8 (1.0)3.7 (1.1)
Corporate Securities:
Bonds and Notes2,903.1 (507.2)250.5 (68.6)3,153.6 (575.8)
Redeemable Preferred Stocks7.7 (1.0)— — 7.7 (1.0)
Collateralized Loan Obligations689.2 (38.4)261.4 (15.9)950.6 (54.3)
Other Mortgage- and Asset-backed228.3 (32.4)61.2 (13.1)289.5 (45.5)
Total Fixed Maturities (1)$5,352.7 $(879.8)$731.7 $(151.5)$6,084.4 $(1,031.3)
(1) Includes securities classified as Held-for-Sale Assets on the Condensed Consolidated Balance Sheets. See Note 4, “Dispositions,” for more information.
An aging of unrealized losses on the Company’s Investments in Fixed Maturities at December 31, 2021 is presented below.
 Less Than 12 Months12 Months or LongerTotal
(Dollars in Millions)Fair
Value
Unrealized
Losses
Fair
Value
Unrealized
Losses
Fair
Value
Unrealized
Losses
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 Subdivisions385.0 (6.9)1.5 (0.1)386.5 (7.0)
Foreign Governments2.2 (0.6)2.6 (0.6)4.8 (1.2)
Corporate Securities:
Bonds and Notes596.8 (13.1)49.3 (2.9)646.1 (16.0)
Redeemable Preferred Stocks0.1 — — — 0.1 — 
Collateralized Loan Obligations250.9 (2.6)192.6 (2.2)443.5 (4.8)
Other Mortgage- and Asset-backed100.1 (1.8)— — 100.1 (1.8)
Total Fixed Maturities$1,503.8 $(26.8)$247.2 $(5.9)$1,751.0 $(32.7)
Schedule of Other Investments
The carrying values of the Company’s Other Investments at September 30, 2022 and December 31, 2021 were:
(Dollars in Millions)Sep 30,
2022
Dec 31,
2021
Equity Securities at Modified Cost
$37.0 $32.3 
Convertible Securities at Fair Value
42.6 46.4 
Real Estate at Depreciated Cost94.3 94.0 
Mortgage Loans98.7 96.8 
Other1.6 0.5 
Total$274.2 $270.0 
Investment Income
Net Investment Income for the nine and three months ended September 30, 2022 and 2021 was:
 Nine Months EndedThree Months Ended
(Dollars in Millions)Sep 30,
2022
Sep 30,
2021
Sep 30,
2022
Sep 30,
2021
Investment Income:
Interest on Fixed Income Securities$218.4 $207.1 $76.9 $68.4 
Dividends on Equity Securities Excluding Alternative Investments4.3 9.8 1.1 2.9 
Alternative Investments:
Equity Method Limited Liability Investments28.0 50.9 (0.6)12.0 
Limited Liability Investments Included in Equity Securities34.9 29.3 8.8 9.5 
Total Alternative Investments62.9 80.2 8.2 21.5 
Short-term Investments1.4 0.6 1.1 0.2 
Loans to Policyholders16.3 16.3 5.5 5.4 
Real Estate7.6 7.1 3.1 2.3 
Company-Owned Life Insurance28.0 18.3 9.9 7.2 
Other5.1 4.8 1.7 1.9 
Total Investment Income 344.0 344.2 107.5 109.8 
Investment Expenses:
Real Estate5.8 6.8 2.3 2.6 
Other Investment Expenses21.9 18.5 7.4 5.3 
Total Investment Expenses27.7 25.3 9.7 7.9 
Net Investment Income$316.3 $318.9 $97.8 $101.9 
Schedule of Realized Gain (Loss)
Gross gains and losses on sales of investments in fixed maturities for the nine and three months ended September 30, 2022 and 2021 were:
 Nine Months EndedThree Months Ended
(Dollars in Millions)Sep 30,
2022
Sep 30,
2021
Sep 30,
2022
Sep 30,
2021
Fixed Maturities:
Gains on Sales$28.0 $42.7 $14.2 $10.3 
Losses on Sales(27.5)(1.7)(23.9)(0.4)
Gains (Losses) on Hedging Activity— — (0.3)— 
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 September 30, 2022 were:
 Amortized
Cost
Gross UnrealizedAllowance for Expected Credit LossesFair Value
(Dollars in Millions)GainsLosses
U.S. Government and Government Agencies and Authorities$612.7 $1.3 $(87.2)$— $526.8 
States and Political Subdivisions1,810.0 8.9 (266.4)(0.4)1,552.1 
Foreign Governments4.8 — (1.1)— 3.7 
Corporate Securities:
Bonds and Notes3,913.9 10.5 (575.8)(7.1)3,341.5 
Redeemable Preferred Stocks9.0 — (1.0)— 8.0 
Collateralized Loan Obligations1,006.9 — (54.3)— 952.6 
Other Mortgage- and Asset-backed339.1 0.8 (45.5)— 294.4 
Investments in Fixed Maturities (1)$7,696.4 $21.5 $(1,031.3)$(7.5)$6,679.1 
(1) Includes securities classified as Held-for-Sale Assets on the Condensed Consolidated Balance Sheets. See Note 4, “Dispositions,” for more information.
The amortized cost and estimated fair values of the Company’s Investments in Fixed Maturities at December 31, 2021 were:
 Amortized
Cost
Gross UnrealizedAllowance for Expected Credit LossesFair Value
(Dollars in Millions)GainsLosses
U.S. Government and Government Agencies and Authorities$610.1 $29.2 $(1.9)$— $637.4 
States and Political Subdivisions1,752.5 144.6 (7.0)— 1,890.1 
Foreign Governments6.7 — (1.2)— 5.5 
Corporate Securities:
Bonds and Notes3,929.0 481.4 (16.0)(7.5)4,386.9 
Redeemable Preferred Stocks7.0 0.4 — — 7.4 
Collateralized Loan Obligations756.0 0.9 (4.8)— 752.1 
Other Mortgage- and Asset-backed296.9 12.4 (1.8)— 307.5 
Investments in Fixed Maturities$7,358.2 $668.9 $(32.7)$(7.5)$7,986.9