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v3.25.3

Business Segments - Segment Revenues (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Segment Reporting Information [Line Items] |  |  |  |  |
Remeasurement gain | [1] | $ 1,133.3 | $ 1,068.5 | $ 3,352.0 | $ 3,134.1
Net Investment Income |  | 104.8 | 111.1 | 301.9 | 304.5
Other Income |  | 2.9 | 2.7 | 8.6 | 7.9
Total Revenues |  | 1,239.7 | 1,178.9 | 3,658.3 | 3,451.8
Change in Fair Value of Equity and Convertible Securities |  | (2.1) | (2.3) | (2.5) | (0.1)
Impairment Losses |  | 3.1 | 2.2 | 6.4 | 3.8
Life Insurance |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Remeasurement gain |  | (0.9) | (0.5) | (1.6) | (1.2)
Operating Segments |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Remeasurement gain |  | 1,117.1 | 1,019.6 | 3,290.3 | 2,920.3
Total Revenues |  | 1,221.8 | 1,123.7 | 3,593.2 | 3,190.4
Operating Segments | Specialty Property & Casualty Insurance |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Remeasurement gain |  | 1,017.3 | 919.0 | 2,990.3 | 2,621.6
Net Investment Income |  | 53.8 | 52.0 | 153.9 | 139.7
Other Income |  | 2.5 | 1.6 | 6.5 | 4.6
Total Revenues |  | 1,073.6 | 972.6 | 3,150.7 | 2,765.9
Operating Segments | Life Insurance |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Remeasurement gain |  | 99.8 | 100.6 | 300.0 | 298.7
Net Investment Income |  | 48.0 | 50.3 | 141.1 | 125.1
Other Income |  | 0.4 | 0.2 | 1.4 | 0.7
Total Revenues |  | 148.2 | 151.1 | 442.5 | 424.5
Non-Core Operations |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Remeasurement gain |  | 16.2 | 48.9 | 61.7 | 213.8
Total Revenues |  | 18.2 | 54.8 | 67.4 | 244.8
Change in Fair Value of Equity and Convertible Securities |  | (2.1) | (2.3) | (2.5) | (0.1)
Net Realized Investment Gains |  | 3.9 | 1.1 | 4.7 | 9.2
Impairment Losses |  | (3.1) | (2.2) | 6.4 | 3.8
Other |  | $ 1.0 | $ 3.8 | $ 1.9 | $ 11.3
[1] | 1 Includes a remeasurement loss related to the deferred profit liability within the Life insurance business of $0.9 million and $0.5 million for the three months ended September 30, 2025 and 2024, respectively, and a remeasurement loss of $1.6 million and $1.2 million for the nine months ended September 30, 2025 and 2024, respectively.

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