| In millions, except per share items | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 | Dec-31-14 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Revenues |
| Corporate and Commercial Specialty | 570.9 | 555.0 | 531.9 | 556.8 | 409.3 | 376.4 | 356.8 | 345.9 |
| Risk Management and Shared Services | 10.3 | 186.8 | 66.0 | 66.7 | 36.9 | 55.3 | 34.2 | 94.0 |
| Community, Consumer, and Business | 17.1 | 19.2 | 18.9 | 17.8 | | | 614.6 | 531.9 |
| |
| EBITDA |
| Corporate and Commercial Specialty | 278.7 | 285.7 | 248.9 | 281.4 | 210.2 | 177.5 | 173.0 | |
| Risk Management and Shared Services | 85.8 | -42.5 | 24.7 | 2.1 | 12.0 | 8.1 | 0.1 | 80.7 |
| Community, Consumer, and Business | | | | | | | 96.7 | |
| |
| EBIT |
| Corporate and Commercial Specialty | 278.7 | 285.7 | 248.9 | 281.4 | 210.2 | 177.5 | 173.0 | |
| Risk Management and Shared Services | 85.8 | -42.5 | 24.7 | 2.1 | 12.0 | 8.1 | 0.1 | 80.7 |
| Community, Consumer, and Business | | | | | | | 96.7 | |
| |
| Mix |
| Corporate and Commercial Specialty | 49.8% | 50.3% | 44.3% | 45.1% | 39.1% | 38.0% | 36.9% | 36.2% |
| Risk Management and Shared Services | 0.9% | 16.9% | 5.5% | 5.4% | 3.5% | 5.6% | 3.5% | 9.8% |
| Community, Consumer, and Business | 1.5% | 1.7% | 1.6% | 1.4% | | | 63.5% | 55.6% |
| |
| Growth |
| Corporate and Commercial Specialty | 2.9% | 4.3% | -4.5% | 36.0% | 8.8% | 5.5% | 3.1% | |
| Risk Management and Shared Services | -94.5% | 182.9% | -1.1% | 80.7% | -33.2% | 61.7% | -63.6% | 303.3% |
| Community, Consumer, and Business | -11.2% | 1.6% | 6.3% | | | | 15.6% | -6.0% |