| In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Interest income on investments | 169.0 | 122.1 | 99.6 | 85.5 | 86.5 | 82.0 | 90.4 | 91.1 |
| Total interest income | 829.6 | 681.1 | 627.1 | 546.2 | 469.0 | 375.0 | 344.2 | 319.7 |
| Interest expense: |
| Interest on deposits | 14.5 | 12.1 | 17.6 | 23.3 | 18.4 | 16.8 | 18.4 | 16.1 |
| Interest on borrowings | 17.3 | | 0.7 | 9.0 | 8.9 | 6.7 | 6.2 | 8.8 |
| | 41.3 | 18.6 | 27.3 | 42.8 | 35.5 | 29.9 | 29.6 | 29.3 |
| Net interest income | 788.4 | 662.5 | 599.7 | 503.4 | 433.5 | 345.2 | 314.5 | 290.4 |
| Provision for loan losses | 20.0 | 23.1 | 39.8 | 0.1 | 10.0 | 10.8 | 2.3 | 2.3 |
| Net interest income after provision for loan losses | 768.4 | 639.4 | 560.0 | 503.3 | 423.5 | 334.3 | 312.2 | 288.1 |
| Deposit and loan fees | | | | | | | | 59.3 |
| Gain on sale of investments, net | | | | | | | | 0.0 |
| Other non-interest income | 120.7 | 144.8 | 172.9 | 130.8 | 118.8 | 112.2 | 107.3 | 39.5 |
| Total non-interest income | 120.7 | 144.8 | 172.9 | 130.8 | 118.8 | 112.2 | 107.3 | 98.8 |
| Non-interest expenses | 518.9 | 434.8 | 404.8 | 374.9 | 320.1 | 265.6 | 258.7 | 236.8 |
| Pre-tax income before non-recurring items | 372.5 | 350.8 | 329.7 | 260.4 | 224.0 | 182.1 | 161.8 | 151.0 |
| Non-recurring items | 2.2 | 1.4 | 1.7 | 1.2 | 1.8 | 1.1 | 1.0 | 0.9 |
| Pre-tax income | 370.3 | 349.4 | 328.0 | 259.2 | 222.2 | 181.0 | 160.8 | 150.1 |
| Income taxes | 67.1 | 64.7 | 61.6 | 48.7 | 40.3 | 64.6 | 39.7 | 34.0 |
| Tax rate | 18.1% | 18.5% | 18.8% | 18.8% | 18.2% | 35.7% | 24.7% | 22.6% |
| Net income | 303.2 | 284.8 | 266.4 | 210.5 | 181.9 | 116.4 | 121.1 | 116.1 |
| Net margin | 34.1% | 36.3% | 36.4% | 33.2% | 33.5% | 26.1% | 28.9% | 30.0% |
| |
| Basic EPS | $2.74 | $2.87 | $2.81 | $2.39 | $2.18 | $1.50 | $1.59 | $1.54 |
| Diluted EPS | $2.74 | $2.86 | $2.81 | $2.38 | $2.17 | $1.50 | $1.59 | $1.54 |
| |
| Shares outstanding (basic) | 110.8 | 99.3 | 94.9 | 88.3 | 83.6 | 77.5 | 76.3 | 75.5 |
| Shares outstanding (diluted) | 110.8 | 99.4 | 94.9 | 88.4 | 83.7 | 77.6 | 76.3 | 75.6 |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |