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Segment Information (Tables) | 6 Months Ended
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Jun. 30, 2025
Segment Reporting [Abstract] |
Reconciliation of operating results by reportable segment | The following tables present the Company's operating results by reportable segment:
| Three Months Ended June 30,
| 2025 |  | 2024
| Property & Casualty |  | Other |  | Total |  | Property & Casualty |  | Other |  | Total
| (Amounts in millions)
Net premiums earned | $ | 1,359.3 |  |  | $ | 7.4 |  |  | $ | 1,366.7 |  |  | $ | 1,228.7 |  |  | $ | 7.3 |  |  | $ | 1,236.0 |
Less: |  |  |  |  |  |  |  |  |  |  |
Losses | 793.3 |  |  | 3.9 |  |  | 797.2 |  |  | 796.9 |  |  | 3.9 |  |  | 800.8 |
Loss adjustment expenses | 142.3 |  |  | 0.5 |  |  | 142.8 |  |  | 135.5 |  |  | 0.4 |  |  | 135.9 |
Losses and loss adjustment expenses | 935.6 |  |  | 4.4 |  |  | 940.0 |  |  | 932.4 |  |  | 4.3 |  |  | 936.7 |
Policy acquisition costs | 225.0 |  |  | 2.9 |  |  | 227.9 |  |  | 200.8 |  |  | 2.9 |  |  | 203.7 |
Other operating expenses | 95.2 |  |  | 0.8 |  |  | 96.0 |  |  | 81.2 |  |  | 0.5 |  |  | 81.7 |
Underwriting gain (loss) | 103.5 |  |  | (0.7) |  |  | 102.8 |  |  | 14.3 |  |  | (0.4) |  |  | 13.9 |
Investment income |  |  |  |  | 78.8 |  |  |  |  |  |  | 69.0 |
Net realized investment gains |  |  |  |  | 23.5 |  |  |  |  |  |  | 2.9 |
Other income (loss) |  |  |  |  | 8.8 |  |  |  |  |  |  | (2.9) |
Interest expense |  |  |  |  | (7.2) |  |  |  |  |  |  | (7.8) |
Pre-tax income |  |  |  |  | $ | 206.7 |  |  |  |  |  |  | $ | 75.1 |
Net income |  |  |  |  | $ | 166.5 |  |  |  |  |  |  | $ | 62.6 |
| Six Months Ended June 30,
| 2025 |  | 2024
| Property & Casualty |  | Other |  | Total |  | Property & Casualty |  | Other |  | Total
| (Amounts in millions)
Net premiums earned | $ | 2,635.1 |  |  | $ | 14.7 |  |  | $ | 2,649.8 |  |  | $ | 2,388.1 |  |  | $ | 14.6 |  |  | $ | 2,402.7 |
Less: |  |  |  |  |  |  |  |  |  |  |
Losses | 1,859.0 |  |  | 7.6 |  |  | 1,866.6 |  |  | 1,579.1 |  |  | 7.5 |  |  | 1,586.6 |
Loss adjustment expenses | 293.3 |  |  | 1.0 |  |  | 294.3 |  |  | 253.3 |  |  | 0.8 |  |  | 254.1 |
Losses and loss adjustment expenses | 2,152.3 |  |  | 8.6 |  |  | 2,160.9 |  |  | 1,832.4 |  |  | 8.3 |  |  | 1,840.7 |
Policy acquisition costs | 450.8 |  |  | 5.8 |  |  | 456.6 |  |  | 393.9 |  |  | 5.8 |  |  | 399.7 |
Other operating expenses | 174.1 |  |  | 1.4 |  |  | 175.5 |  |  | 157.4 |  |  | 1.4 |  |  | 158.8 |
Underwriting (loss) gain | (142.1) |  |  | (1.1) |  |  | (143.2) |  |  | 4.4 |  |  | (0.9) |  |  | 3.5 |
Investment income |  |  |  |  | 160.2 |  |  |  |  |  |  | 134.0 |
Net realized investment gains |  |  |  |  | 46.8 |  |  |  |  |  |  | 41.1 |
Other income |  |  |  |  | 15.0 |  |  |  |  |  |  | 1.3 |
Interest expense |  |  |  |  | (14.3) |  |  |  |  |  |  | (15.6) |
Pre-tax income |  |  |  |  | $ | 64.5 |  |  |  |  |  |  | $ | 164.3 |
Net income |  |  |  |  | $ | 58.1 |  |  |  |  |  |  | $ | 136.0 |
Schedule direct premiums attributable to segment | The following tables present the Company’s net premiums earned and direct premiums written by reportable segment and line of insurance business:
| Three Months Ended June 30,
| 2025 |  | 2024
| Property & Casualty |  | Other |  | Total |  | Property & Casualty |  | Other |  | Total
| (Amounts in millions)
Private passenger automobile | $ | 887.4 |  |  | $ | — |  |  | $ | 887.4 |  |  | $ | 799.6 |  |  | $ | — |  |  | $ | 799.6 |
Homeowners | 316.9 |  |  | — |  |  | 316.9 |  |  | 283.6 |  |  | — |  |  | 283.6 |
Commercial automobile | 95.9 |  |  | — |  |  | 95.9 |  |  | 94.2 |  |  | — |  |  | 94.2 |
Other | 59.1 |  |  | 7.4 |  |  | 66.5 |  |  | 51.3 |  |  | 7.3 |  |  | 58.6 |
Net premiums earned | $ | 1,359.3 |  |  | $ | 7.4 |  |  | $ | 1,366.7 |  |  | $ | 1,228.7 |  |  | $ | 7.3 |  |  | $ | 1,236.0 |
Private passenger automobile | $ | 881.5 |  |  | $ | — |  |  | $ | 881.5 |  |  | $ | 847.6 |  |  | $ | — |  |  | $ | 847.6 |
Homeowners | 434.5 |  |  | — |  |  | 434.5 |  |  | 361.9 |  |  | — |  |  | 361.9 |
Commercial automobile | 93.9 |  |  | — |  |  | 93.9 |  |  | 98.8 |  |  | — |  |  | 98.8 |
Other | 67.3 |  |  | 7.8 |  |  | 75.1 |  |  | 72.2 |  |  | 6.8 |  |  | 79.0 |
Direct premiums written | $ | 1,477.2 |  |  | $ | 7.8 |  |  | $ | 1,485.0 |  |  | $ | 1,380.5 |  |  | $ | 6.8 |  |  | $ | 1,387.3 |
| Six Months Ended June 30,
| 2025 |  | 2024
| Property & Casualty |  | Other |  | Total |  | Property & Casualty |  | Other |  | Total
| (Amounts in millions)
Private passenger automobile | $ | 1,746.0 |  |  | $ | — |  |  | $ | 1,746.0 |  |  | $ | 1,553.9 |  |  | $ | — |  |  | $ | 1,553.9 |
Homeowners | 572.9 |  |  | — |  |  | 572.9 |  |  | 550.5 |  |  | — |  |  | 550.5 |
Commercial automobile | 191.2 |  |  | — |  |  | 191.2 |  |  | 183.4 |  |  | — |  |  | 183.4 |
Other | 125.0 |  |  | 14.7 |  |  | 139.7 |  |  | 100.3 |  |  | 14.6 |  |  | 114.9 |
Net premiums earned | $ | 2,635.1 |  |  | $ | 14.7 |  |  | $ | 2,649.8 |  |  | $ | 2,388.1 |  |  | $ | 14.6 |  |  | $ | 2,402.7 |
Private passenger automobile | $ | 1,788.0 |  |  | $ | — |  |  | $ | 1,788.0 |  |  | $ | 1,673.1 |  |  | $ | — |  |  | $ | 1,673.1 |
Homeowners | 778.7 |  |  | — |  |  | 778.7 |  |  | 664.0 |  |  | — |  |  | 664.0 |
Commercial automobile | 200.4 |  |  | — |  |  | 200.4 |  |  | 202.8 |  |  | — |  |  | 202.8 |
Other | 148.5 |  |  | 14.8 |  |  | 163.3 |  |  | 135.1 |  |  | 13.4 |  |  | 148.5 |
Direct premiums written | $ | 2,915.6 |  |  | $ | 14.8 |  |  | $ | 2,930.4 |  |  | $ | 2,675.0 |  |  | $ | 13.4 |  |  | $ | 2,688.4 |

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