| In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-05-18 | Dec-31-17 | Dec-31-16 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 8-K | 10-K | 10-K |
| Interest income on loans | 323.1 | 317.2 | 328.7 | 321.4 | 271.1 | 271.1 | 248.7 | 242.0 |
| Total interest income | 378.2 | 345.9 | 357.7 | 360.5 | 310.8 | 310.8 | 286.4 | 276.3 |
| Interest expense: |
| | 31.2 | 16.0 | 30.1 | 62.8 | 43.9 | 43.9 | 42.7 | 38.2 |
| Net interest income | 347.1 | 329.9 | 327.6 | 297.7 | 266.9 | 266.9 | 243.8 | 238.1 |
| Provision for loan losses | 4.6 | -11.9 | 12.1 | 6.2 | 7.9 | | 8.6 | -5.1 |
| Net interest income after provision for loan losses | 342.5 | 341.8 | 315.6 | 291.6 | 259.0 | 266.9 | 235.2 | 243.2 |
| Other non-interest income | 135.9 | 129.9 | 125.7 | 97.2 | 101.1 | | 86.4 | 84.0 |
| Total non-interest income | 135.9 | 129.9 | 125.7 | 97.2 | 101.1 | | 86.4 | 84.0 |
| Non-interest expenses | 298.0 | 283.5 | 286.6 | 264.0 | 228.8 | | 203.2 | 204.3 |
| Pre-tax income before non-recurring items | 180.5 | 188.2 | 157.9 | 124.4 | 129.0 | 131.3 | 120.3 | 122.9 |
| Non-recurring items | | | 3.3 | -0.4 | -2.3 | | 1.8 | |
| Pre-tax income | 180.5 | 188.2 | 154.6 | 124.8 | 131.3 | 131.3 | 118.5 | 122.9 |
| Income taxes | 32.1 | 34.3 | 26.7 | 22.1 | 20.9 | 20.9 | 34.2 | 36.8 |
| Tax rate | 17.8% | 18.2% | 17.3% | 17.7% | 15.9% | 15.9% | 28.9% | 29.9% |
| Net income | 148.4 | 153.9 | 127.9 | 102.7 | 110.4 | 110.4 | 84.2 | 86.1 |
| Net margin | 31.0% | 32.6% | 29.0% | 26.4% | 30.7% | 41.4% | 26.2% | 26.3% |
| |
| Basic EPS | $9.13 | $9.45 | $7.85 | $6.33 | $7.13 | $7.13 | $5.51 | $5.62 |
| Diluted EPS | $9.06 | $9.37 | $7.80 | $6.29 | $7.07 | $7.07 | $5.47 | $5.59 |
| |
| Shares outstanding (basic) | 16.2 | 16.3 | 16.3 | 16.2 | 15.5 | 15.5 | 15.3 | 15.3 |
| Shares outstanding (diluted) | 16.4 | 16.4 | 16.4 | 16.3 | 15.6 | 15.6 | 15.4 | 15.4 |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |