| In millions, except per share items | Jun-30-23 | Mar-31-23 | Dec-31-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 |
| | 10-Q | 8-K | 8-K | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
| Net income | -56.5 | -53.8 | -60.4 | -64.6 | 71.9 | -161.0 | -168.0 | -6.2 |
| Depreciation and amortization | 4.7 | 4.4 | | 3.1 | 2.5 | 1.7 | 1.5 | 1.3 |
| Asset impairment charges | 1.6 | | | | | | | |
| Stock-based compensation | 63.3 | | | 32.0 | 55.3 | 68.6 | | 0.6 |
| Deferred taxes | 0.0 | -0.2 | | 0.3 | -0.2 | -0.4 | | |
| Change in working capital [+] | 4.2 | -2.8 | | 0.0 | -1.2 | 3.7 | -0.4 | -0.9 |
| Accounts receivable | 3.4 | -1.3 | | 0.6 | -4.0 | -1.1 | -3.2 | -2.2 |
| Inventories | -2.5 | -3.3 | | -1.3 | 0.4 | -1.6 | -1.4 | 0.8 |
| Other current assets | 4.3 | | | -1.4 | -1.6 | -0.1 | | -1.1 |
| Accounts payable | 2.1 | -2.3 | | 1.7 | 0.7 | 5.4 | 2.0 | -0.4 |
| Accrued expenses | 1.0 | | | 0.4 | 3.3 | 1.0 | | 1.9 |
| Other | -4.0 | 4.0 | | | | | 2.2 | |
| Other operating activities | -29.6 | 32.0 | | -3.5 | -153.7 | 69.7 | 148.5 | 1.5 |
| Cash from operations | -12.4 | -20.4 | | -32.8 | -25.5 | -17.7 | -18.5 | -3.7 |
| |
| Capital expenditures [+] | -5.3 | -0.1 | | -3.9 | -4.0 | -2.2 | -0.2 | -2.1 |
| Purchases of property and equipment | 0.0 | -0.1 | | -0.4 | -0.4 | -0.3 | -0.2 | -0.2 |
| Capitalized product costs | -5.2 | | | -3.5 | -3.6 | -2.0 | | -1.9 |
| Acquisitions | | -1.7 | | | -30.0 | | | |
| Purchases of short-term investments, net | -48.2 | 51.2 | | 56.3 | 15.8 | -66.1 | -466.5 | |
| Purchases of short-term investments | -194.0 | -57.6 | | -57.6 | -30.4 | -66.1 | -466.5 | |
| Sales of short-term investments | 145.8 | 108.8 | | 113.9 | 46.2 | | | |
| Other cash from investing | 2.6 | -2.6 | | | | -0.3 | -2.0 | |
| Cash from investing | -50.9 | 46.9 | | 52.4 | -18.2 | -68.6 | -468.7 | -2.1 |
| |
| Option exercises | -0.7 | 0.7 | | -2.2 | 2.2 | 0.4 | | -0.8 |
| Other cash from financing | 0.8 | 1.0 | | -0.6 | -1.0 | 77.2 | 593.9 | -2.1 |
| Cash from financing | 1.5 | 0.4 | | 1.6 | -3.2 | 76.8 | 593.9 | -1.3 |
| |
| Free cash flow | -12.5 | -20.5 | | -33.2 | -25.9 | -18.0 | -18.7 | -3.9 |
| Per share (diluted) | ($0.06) | ($0.07) | | ($0.13) | ($0.09) | ($0.15) | ($0.10) | ($0.14) |
| |
| Cash paid for interest | | | | | | | | 0.3 |