| In millions, except per share items | Jun-30-23 | Mar-31-23 | Dec-31-22 | Sep-30-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 |
| | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q |
| Net income | -78.7 | | | | | -97.1 | -245.6 | -261.4 |
| Depreciation and amortization | 40.5 | 37.9 | 35.7 | 30.7 | 24.6 | 12.6 | 8.0 | 6.9 |
| Stock-based compensation | 12.1 | 12.8 | 20.0 | 29.7 | 55.0 | 51.5 | 41.8 | 28.8 |
| Change in working capital [+] | 20.2 | 10.7 | 17.4 | 26.7 | 30.8 | 35.6 | 30.8 | 15.2 |
| Accounts receivable | -4.0 | -3.5 | -0.5 | -0.3 | 0.7 | 0.3 | 1.5 | 0.2 |
| Other | 24.2 | | | | | 32.8 | 26.8 | 12.4 |
| Other operating activities | -26.5 | | | | | -56.5 | 113.3 | 171.2 |
| Cash from operations | -32.3 | -48.4 | -44.5 | -54.6 | -60.5 | -35.4 | -33.3 | -21.0 |
| |
| Capital expenditures [+] | -14.8 | -12.6 | -11.7 | -9.6 | -6.3 | -3.0 | -1.1 | -0.4 |
| Purchases of property and equipment | -14.8 | -12.6 | -11.7 | -9.6 | -6.3 | -3.0 | -1.1 | -0.4 |
| Sales of property and equipment | 0.0 | | | | | | | |
| Purchases of short-term investments, net | 15.1 | | | | | | | |
| Purchases of short-term investments | -26.0 | -62.1 | | -50.3 | -43.8 | | | |
| Sales of short-term investments | 41.1 | | | | | | | |
| Other cash from investing | -19.6 | | | | | -55.0 | -51.0 | -37.4 |
| Cash from investing | -19.3 | -57.6 | -81.6 | -98.2 | -121.2 | -58.0 | -52.1 | -37.9 |
| |
| Option exercises | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Financing costs | 0.4 | | | | | | | -5.6 |
| Other cash from financing | 27.6 | | | | | 154.6 | 215.8 | 216.1 |
| Cash from financing | 27.2 | 27.4 | -5.1 | -4.8 | 217.2 | 159.9 | 221.3 | 221.6 |
| |
| Free cash flow | -47.1 | -61.0 | -56.1 | -64.2 | -66.9 | -38.4 | -34.4 | -21.4 |
| Per share (diluted) | ($0.38) | | | | | ($0.49) | ($0.31) | ($0.21) |
| |
| Cash paid for interest | | | | 0.0 | 0.1 | | 0.1 | 0.3 |
| Cash paid for income taxes | 0.1 | | | | | | | |