| In millions, except per share items | Apr-30-23 | Jan-31-23 | Jan-05-23 | Oct-31-22 | Oct-05-22 | Jul-31-22 | Jul-05-22 | Apr-30-22 |
| | 10-Q | 10-K | 8-K | 10-Q | 8-K | 10-Q | 8-K | 10-Q |
| Net income | 39.8 | 26.8 | | 1.9 | | -21.8 | | -31.6 |
| Depreciation and amortization | 60.4 | 66.0 | | 72.5 | | 75.5 | | 77.4 |
| Change in working capital | | -6.0 | | | | | | |
| Other | | -6.0 | | | | | | |
| Other operating activities | 221.0 | 211.2 | | 148.9 | | 146.1 | | 170.4 |
| Cash from operations | 315.2 | 298.0 | | 255.0 | | 231.3 | | 247.8 |
| |
| Capital expenditures | 0.0 | 0.0 | | 0.0 | | 0.0 | | 0.0 |
| Acquisitions | | -0.3 | | | | 3.0 | | |
| Sales of short-term investments, net [+] | 292.6 | 342.1 | | 330.3 | | 364.7 | | 237.9 |
| Purchases of short-term investments | 99.6 | 102.1 | | 117.3 | | 179.7 | | 157.9 |
| Sales of short-term investments | 193.0 | 240.0 | | 213.0 | | 185.0 | | 80.0 |
| Other cash from investing | -218.9 | -221.2 | | -248.4 | | -377.2 | | -332.6 |
| Cash from investing | 73.4 | 120.6 | | 82.1 | | -9.6 | | -92.0 |
| |
| Repurchase of common stock, net | -164.8 | -242.0 | | -370.9 | | -486.6 | | -652.8 |
| Other cash from financing | -130.5 | -154.5 | | -156.7 | | -153.3 | | 336.6 |
| Cash from financing | -295.2 | -396.5 | | -527.6 | | -639.8 | | -316.2 |
| |
| Free cash flow | 315.2 | 298.0 | | 255.0 | | 231.3 | | 247.8 |
| Per share (diluted) | $4.22 | $4.07 | | $3.48 | | $3.12 | | $2.17 |
| |