v3.25.4
Goodwill and Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
Goodwill balances by business segment at December 31, 2025 and 2024 were:
DOLLARS IN MILLIONS20252024
Specialty Property & Casualty Insurance$1,043.0 $1,043.0 
Life Insurance207.7 207.7 
Total$1,250.7 $1,250.7 
Schedule of Definite-Life Intangible Assets
The gross carrying amount and accumulated amortization of definite and indefinite life intangible assets at December 31, 2025 and 2024 were:
 20252024
(Dollars in Millions)Gross Carrying AmountAccumulated AmortizationNet AmountGross
Carrying Amount		Accumulated AmortizationNet Amount
Definite Life Intangible Assets:
Value of Business Acquired$237.5 $227.0 $10.5 $237.5 $225.4 $12.1 
Customer Relationships43.8 42.7 1.1 43.8 42.3 1.5 
Agent Relationships81.7 48.8 32.9 81.6 43.9 37.7 
Trade Names— — — — — — 
Internal-Use Software1
330.1 148.1 182.0 395.1 180.3 214.8 
Total Definite Life Intangible Assets693.1 466.6 226.5 758.0 491.9 266.1 
Indefinite Life Intangible Assets:
Trade Names5.2 — 5.2 5.2 — 5.2 
Insurance Licenses44.1 — 44.1 44.2 — 44.2 
Total Indefinite Life Intangible Assets49.3 — 49.3 49.4 — 49.4 
Total Intangible Assets$742.4 $466.6 $275.8 $807.4 $491.9 $315.5 
1 During the year ended December 31, 2025, the Company recognized a $21.7 million impairment of Internal-Use Software assets included in Non-Core Operations.
Schedule of Indefinite-Life Intangible Assets
The gross carrying amount and accumulated amortization of definite and indefinite life intangible assets at December 31, 2025 and 2024 were:
 20252024
(Dollars in Millions)Gross Carrying AmountAccumulated AmortizationNet AmountGross
Carrying Amount		Accumulated AmortizationNet Amount
Definite Life Intangible Assets:
Value of Business Acquired$237.5 $227.0 $10.5 $237.5 $225.4 $12.1 
Customer Relationships43.8 42.7 1.1 43.8 42.3 1.5 
Agent Relationships81.7 48.8 32.9 81.6 43.9 37.7 
Trade Names— — — — — — 
Internal-Use Software1
330.1 148.1 182.0 395.1 180.3 214.8 
Total Definite Life Intangible Assets693.1 466.6 226.5 758.0 491.9 266.1 
Indefinite Life Intangible Assets:
Trade Names5.2 — 5.2 5.2 — 5.2 
Insurance Licenses44.1 — 44.1 44.2 — 44.2 
Total Indefinite Life Intangible Assets49.3 — 49.3 49.4 — 49.4 
Total Intangible Assets$742.4 $466.6 $275.8 $807.4 $491.9 $315.5 
1 During the year ended December 31, 2025, the Company recognized a $21.7 million impairment of Internal-Use Software assets included in Non-Core Operations.
Finite-Lived Intangible Assets Amortization Expense In 2025, 2024 and 2023, the Company recognized the following amortization expense on definite life intangible assets:
DOLLARS IN MILLIONS202520242023
Specialty Property & Casualty Insurance$18.8 $16.6 $17.9 
Life Insurance3.7 6.0 3.4 
Total Segment Amortization Expense
22.5 22.6 21.3 
Corporate and Other
17.4 21.8 26.1 
Non-Core Operations1
23.9 1.9 1.2 
Total Amortization Expense
$63.8 $46.3 $48.6 
During the year ended December 31, 2025 the Company recognized a $21.7 million impairment of Internal-Use Software assets included in Non-Core Operations.
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 MILLIONS20262027202820292030
Definite Life Intangible Assets:
Value of Business Acquired$1.5 $1.5 $1.4 $1.3 $1.1 
Customer Relationships0.5 0.3 0.1 0.1 — 
Agent Relationships4.9 4.9 4.9 4.9 4.1 
Internal-Use Software29.4 25.8 23.4 18.9 14.3 
Total$36.3 $32.5 $29.8 $25.2 $19.5