| In millions, except per share items | Jun-30-23 | Mar-31-23 | Dec-31-22 | Sep-30-22 | Sep-05-22 | Jun-30-22 | Jun-05-22 | Mar-31-22 |
| | 10-Q | 10-Q | 10-K | 10-Q | 8-K | 10-Q | 8-K | 10-Q |
| Net income | -40.3 | -58.7 | -67.7 | -70.9 | -70.9 | -75.9 | | -75.3 |
| Depreciation and amortization | 2.3 | 2.5 | 2.4 | 2.2 | | 2.3 | | 2.3 |
| Change in working capital | | | 10.5 | | | | | |
| Other | | | 10.5 | | | | | |
| Other operating activities | -49.2 | -37.5 | -34.3 | -37.8 | | -29.5 | | -75.0 |
| Cash from operations | -76.8 | -83.2 | -89.2 | -87.6 | | -84.4 | | -129.3 |
| |
| Capital expenditures | 0.3 | 1.0 | 0.4 | 0.2 | | 0.2 | | -0.5 |
| Purchases of property and equipment | | | 0.4 | | | 0.2 | | -0.5 |
| Purchases of short-term investments | 25.6 | | | 41.8 | | 63.0 | | 79.5 |
| Purchases of short-term investments | 25.6 | | | 41.8 | | 63.0 | | 79.5 |
| Other cash from investing | -16.0 | 46.8 | 64.9 | 52.2 | | 11.2 | | 25.7 |
| Cash from investing | 10.0 | 61.7 | 89.7 | 94.2 | | 74.4 | | 104.7 |
| |
| Issuance of common stock, net | 1.8 | 1.5 | | | | | | |
| Other cash from financing | 29.3 | 30.6 | 6.4 | 3.8 | | 4.1 | | 4.2 |
| Cash from financing | 31.1 | 32.2 | 6.4 | 1.0 | | 1.3 | | 4.2 |
| |
| Free cash flow | -76.5 | -82.2 | -88.8 | -87.5 | | -84.2 | | -129.8 |
| Per share (diluted) | ($2.17) | ($2.41) | ($2.69) | ($2.67) | | ($2.57) | | ($3.99) |