| In millions, except per share items | Jun-30-23 | Mar-31-23 | Dec-31-22 | Dec-05-22 | Sep-30-22 | Sep-05-22 | Jun-30-22 | Mar-31-22 |
| | 10-Q | 10-Q | 10-K | 8-K | 10-Q | 8-K | 10-Q | 10-Q |
| Net income | -128.5 | -99.2 | -101.1 | | -95.4 | | -85.3 | -76.9 |
| Depreciation and amortization [+] | 2.8 | 2.6 | 2.4 | | 2.0 | | 1.5 | 1.1 |
| Depreciation | 2.8 | 2.6 | 2.4 | | 2.0 | | 1.5 | 1.1 |
| Asset impairment charges | 1.6 | | | | | | | |
| Change in working capital | 0.1 | 0.3 | 1.1 | | 1.7 | | 1.5 | 2.5 |
| Other | 0.1 | 0.3 | 1.1 | | 1.7 | | 1.5 | 0.7 |
| Other operating activities | 44.6 | 8.5 | 9.6 | | 10.6 | | 7.9 | 8.3 |
| Cash from operations | -79.4 | -87.8 | -88.0 | | -81.1 | | -74.3 | -66.0 |
| |
| Capital expenditures | 7.9 | 3.7 | 6.6 | | 6.6 | | 9.3 | 9.4 |
| Purchases of property and equipment | 7.9 | 3.7 | 6.6 | | 6.6 | | 9.3 | 9.4 |
| Purchases of short-term investments | 179.4 | 266.3 | 405.5 | | 339.8 | | 254.2 | 167.4 |
| Purchases of short-term investments | 179.4 | 266.3 | 405.5 | | 339.8 | | 254.2 | 167.4 |
| Other cash from investing | -54.9 | -298.0 | -654.0 | | -602.7 | | -527.0 | -352.8 |
| Cash from investing | 132.4 | -28.0 | -241.9 | | -256.4 | | -263.5 | -176.0 |
| |
| Option exercises | 0.4 | | 0.7 | | 0.7 | | 0.7 | |
| Other cash from financing | 0.7 | 1.3 | 1.3 | | 1.4 | | 1.5 | |
| Cash from financing | 0.3 | 0.6 | 0.6 | | 0.7 | | 32.6 | 251.7 |
| |
| Free cash flow | -71.4 | -84.1 | -81.4 | | -74.6 | | -65.1 | -56.7 |
| Per share (diluted) | ($1.28) | ($1.53) | ($1.49) | | ($1.55) | | ($1.37) | ($1.61) |