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Investments (Tables)
9 Months Ended
Sep. 30, 2020
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, 2020 by contractual maturity were:
(Dollars in Millions)Amortized CostFair Value
Due in One Year or Less$122.6 $124.2 
Due after One Year to Five Years1,060.5 1,117.0 
Due after Five Years to Ten Years1,616.8 1,812.8 
Due after Ten Years2,475.7 3,012.0 
Mortgage- and Asset-backed Securities Not Due at a Single Maturity Date1,419.2 1,438.8 
Investments in Fixed Maturities$6,694.8 $7,504.8 
Schedule of Unrealized Loss on Investments
An aging of unrealized losses on the Company’s Investments in Fixed Maturities at September 30, 2020 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
$2.3 $— $— $— $2.3 $— 
States and Political Subdivisions28.5 (1.6)— — 28.5 (1.6)
Foreign Governments2.5 (0.2)2.4 (1.0)4.9 (1.2)
Corporate Securities:
Bonds and Notes336.2 (15.5)24.7 (3.0)360.9 (18.5)
Collateralized Loan Obligations276.4 (11.6)321.0 (22.3)597.4 (33.9)
Other Mortgage- and Asset-backed1.4 — — — 1.4 — 
Total Fixed Maturities$647.3 $(28.9)$348.1 $(26.3)$995.4 $(55.2)
An aging of unrealized losses on the Company’s Investments in Fixed Maturities at December 31, 2019 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
$118.5 $(1.3)$5.1 $— $123.6 $(1.3)
States and Political Subdivisions63.0 (0.7)5.4 (0.4)68.4 (1.1)
Foreign Governments1.0 (0.3)3.1 (1.3)4.1 (1.6)
Corporate Securities:
Bonds and Notes160.0 (2.1)70.7 (5.0)230.7 (7.1)
Redeemable Preferred Stocks5.5 (0.1)— — 5.5 (0.1)
Collateralized Loan Obligations95.5 (1.9)355.6 (6.6)451.1 (8.5)
Other Mortgage- and Asset-backed72.8 (1.1)— — 72.8 (1.1)
Total Fixed Maturities$516.3 $(7.5)$439.9 $(13.3)$956.2 $(20.8)
Allowance for Credit Losses
The following table sets forth the change in allowance for credit losses on fixed maturities available-for-sale by major security type for nine months ended September 30, 2020.
 Foreign GovernmentsCorporate Bonds and NotesTotal
(Dollars in Millions)
Allowance for Credit Losses at Beginning of the Year$— $— $— 
Impact of Adopting ASU 2016-13— — — 
Additions for Securities for which No Previous Expected Credit Losses were
Recognized
0.6 5.0 5.6 
Reduction Due to Sales(0.1)(0.4)(0.5)
Net Increase (Decrease) in Allowance on Previously Impaired Securities0.1 (0.1)— 
Write-offs Charged Against Allowance— (0.3)(0.3)
Allowance for Credit Losses at End of Period$0.6 $4.2 $4.8 
Note 2 - Investments (continued)
The following table sets forth the change in allowance for credit losses on fixed maturities available-for-sale by major security type for the three months ended September 30, 2020.
 Foreign GovernmentsCorporate Bonds and NotesTotal
(Dollars in Millions)
Allowance for Credit Losses at Beginning of the Period$0.6 $4.8 $5.4 
Additions for Securities for which No Previous Expected Credit Losses were
Recognized
— 0.2 0.2 
Reduction Due to Sales(0.1)(0.4)(0.5)
Net Increase (Decrease) in Allowance on Previously Impaired Securities0.1 (0.1)— 
Write-offs Charged Against Allowance— (0.3)(0.3)
Allowance for Credit Losses at End of Period$0.6 $4.2 $4.8 
Schedule of Other Investments
The carrying values of the Company’s Other Investments at September 30, 2020 and December 31, 2019 were:
(Dollars in Millions)Sep 30,
2020
Dec 31,
2019
Company-owned Life Insurance$326.1 $217.0 
Loans to Policyholders at Unpaid Principal299.5 305.6 
Real Estate at Depreciated Cost99.6 111.4 
Mortgage Loans and Other37.6 27.5 
Total$762.8 $661.5 
Investment Income
Net Investment Income for the nine and three months ended September 30, 2020 and 2019 was:
 Nine Months EndedThree Months Ended
(Dollars in Millions)Sep 30,
2020
Sep 30,
2019
Sep 30,
2020
Sep 30,
2019
Investment Income (Loss):
Interest on Fixed Income Securities$218.0 $225.5 $72.7 $73.5 
Dividends on Equity Securities Excluding Alternative Investments10.7 14.6 2.8 5.2 
Alternative Investments:
Equity Method Limited Liability Investments(2.7)0.6 8.2 1.6 
Limited Liability Investments Included in Equity Securities7.3 12.9 2.4 5.2 
Total Alternative Investments4.6 13.5 10.6 6.8 
Short-term Investments4.2 6.9 2.3 2.5 
Loans to Policyholders16.6 16.9 5.5 5.9 
Real Estate7.1 7.1 2.3 2.4 
Other9.3 0.9 2.7 0.6 
Total Investment Income 270.5 285.4 98.9 96.9 
Investment Expenses:
Real Estate6.5 7.2 1.2 2.5 
Other Investment Expenses18.5 7.8 5.6 2.7 
Total Investment Expenses25.0 15.0 6.8 5.2 
Net Investment Income$245.5 $270.4 $92.1 $91.7 
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, 2020 and 2019 were:
 Nine Months EndedThree Months Ended
(Dollars in Millions)Sep 30,
2020
Sep 30,
2019
Sep 30,
2020
Sep 30,
2019
Fixed Maturities:
Gains on Sales$38.7 $39.7 $11.9 $1.9 
Losses on Sales(3.5)(4.8)(1.9)(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, 2020 were:
 Amortized
Cost
Gross UnrealizedAllowance for Expected Credit LossesFair Value
(Dollars in Millions)GainsLosses
U.S. Government and Government Agencies and Authorities$596.6 $56.2 $— $— $652.8 
States and Political Subdivisions1,334.3 178.9 (1.6)— 1,511.6 
Foreign Governments6.7 — (1.2)(0.6)4.9 
Corporate Securities:
Bonds and Notes3,786.8 611.6 (18.5)(4.2)4,375.7 
Redeemable Preferred Stocks6.7 0.6 — — 7.3 
Collateralized Loan Obligations759.5 1.8 (33.9)— 727.4 
Other Mortgage- and Asset-backed204.2 20.9 — — 225.1 
Investments in Fixed Maturities$6,694.8 $870.0 $(55.2)$(4.8)$7,504.8 
The amortized cost and estimated fair values of the Company’s Investments in Fixed Maturities at December 31, 2019 were:
 Amortized
Cost
Gross UnrealizedFair Value
(Dollars in Millions)GainsLosses
U.S. Government and Government Agencies and Authorities$784.7 $32.5 $(1.3)$815.9 
States and Political Subdivisions1,386.4 130.5 (1.1)1,515.8 
Foreign Governments17.2 1.2 (1.6)16.8 
Corporate Securities:
Bonds and Notes3,465.0 401.8 (7.1)3,859.7 
Redeemable Preferred Stocks6.8 — (0.1)6.7 
Collateralized Loan Obligations624.6 2.1 (8.5)618.2 
Other Mortgage- and Asset-backed88.0 2.1 (1.1)89.0 
Investments in Fixed Maturities$6,372.7 $570.2 $(20.8)$6,922.1