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Amortization of Intangible Assets | 9 Months Ended
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Sep. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract] |
Amortization of Intangible Assets | Amortization of Intangible Assets The following table presents the amortization expense on definite life intangible assets incurred by the Company for the three and nine months ended September 30, 2025 and 2024:
|  | Three Months Ended |  | Nine Months Ended
(Dollars in Millions) |  | Sep 30, 2025 |  | Sep 30, 2024 |  | Sep 30, 2025 |  | Sep 30, 2024
Specialty Property & Casualty Insurance |  | $ | 5.5 |  |  | $ | 4.0 |  |  | $ | 14.3 |  |  | $ | 12.6 |
Life Insurance |  | 1.8 |  |  | 1.6 |  |  | 5.1 |  |  | 4.2 |
Total Segment Amortization Expense |  | 7.3 |  |  | 5.6 |  |  | 19.4 |  |  | 16.8 |
Corporate and Other |  | 4.2 |  |  | 5.3 |  |  | 14.0 |  |  | 16.8 |
Non-Core Operations 1 |  | 22.3 |  |  | 0.5 |  |  | 23.6 |  |  | 1.2 |
Total Amortization Expense |  | $ | 33.8 |  |  | $ | 11.4 |  |  | $ | 57.0 |  |  | $ | 34.8 |
1 During the three and nine months ended September 30, 2025, the Company recognized a $21.7 million impairment of Internal-Use Software assets included in Non-Core Operations.

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-30/tableOfContent Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-20/tableOfContent + Details
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