| In millions, except per share items | Jun-30-23 | Mar-31-23 | Dec-31-22 | Sep-30-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 |
| | 10-Q | 10-Q | 8-K | 8-K | 10-Q | 10-Q | 10-K | 10-Q |
| Interest income: |
| Interest income on loans | 173.5 | 158.0 | 144.7 | 135.6 | 129.2 | 126.9 | 125.4 | 126.4 |
| Interest income on investments | 13.3 | 13.3 | | | 25.3 | 23.9 | 21.9 | 20.6 |
| | 202.7 | 186.7 | 172.8 | 162.9 | 155.7 | 152.0 | 148.5 | 148.2 |
| Interest expense: |
| Interest on deposits | 51.0 | 34.3 | 20.3 | 11.7 | 8.3 | 7.7 | 7.9 | 8.5 |
| | 60.9 | 41.0 | 25.1 | 15.4 | 11.3 | 10.5 | 11.0 | 12.1 |
| Net interest income | 141.8 | 145.6 | 147.7 | 147.5 | 144.4 | 141.4 | 137.4 | 136.1 |
| Provision for loan losses | 2.1 | 4.3 | | | 3.4 | -2.3 | -3.2 | -4.2 |
| Net interest income after provision for loan losses | 139.7 | 141.3 | 146.4 | 145.0 | 141.0 | 143.7 | 140.6 | 140.3 |
| Deposit and loan fees | | | 3.8 | 1.9 | | | | |
| Gain on sale of investments, net | | | | | 0.0 | | | |
| Other non-interest income | 35.9 | 36.9 | 36.9 | 41.1 | 44.2 | 44.3 | 49.7 | 52.0 |
| Total non-interest income | 39.7 | 40.7 | 40.7 | 43.0 | 44.2 | 44.3 | 49.7 | 52.0 |
| Non-interest expenses | 107.4 | 106.8 | 106.8 | 106.8 | 106.0 | 105.0 | 103.7 | 103.4 |
| Pre-tax income | 68.8 | 72.0 | 77.0 | 78.4 | 79.2 | 83.1 | 86.6 | 88.8 |
| Income taxes | 14.0 | 14.6 | 15.6 | 15.9 | 16.2 | 17.0 | 17.6 | 18.0 |
| Tax rate | 20.4% | 20.3% | 20.3% | 20.2% | 20.5% | 20.5% | 20.3% | 20.3% |
| Net income | 54.7 | 57.4 | 61.4 | 62.6 | 63.0 | 66.1 | 69.0 | 70.8 |
| Net margin | 30.5% | 31.5% | 32.8% | 33.3% | 34.0% | 35.1% | 36.3% | 36.8% |
| |
| Basic EPS | $3.74 | $3.92 | $4.19 | $4.24 | $4.25 | $4.44 | $4.62 | $4.74 |
| Diluted EPS | $3.74 | $3.91 | $4.18 | $4.23 | $4.23 | $4.42 | $4.60 | $4.72 |
| |
| Shares outstanding (basic) | 14.6 | 14.6 | 14.7 | 14.8 | 14.8 | 14.9 | 14.9 | 14.9 |
| Shares outstanding (diluted) | 14.6 | 14.7 | 14.7 | 14.8 | 14.9 | 15.0 | 15.0 | 15.0 |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |