| In millions, except per share items | Mar-31-23 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 | Mar-31-21 | Dec-31-20 |
| | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K |
| Net income | -50.7 | -64.5 | -42.4 | -18.4 | -17.2 | -11.1 | -11.6 | -415.6 |
| Depreciation and amortization | 6.5 | 6.5 | 6.2 | 5.8 | 5.7 | 4.9 | 4.8 | 3.9 |
| Stock-based compensation | 42.1 | 36.3 | 26.0 | 26.9 | 26.0 | 26.9 | 16.2 | 14.3 |
| Change in working capital [+] | 6.8 | 4.3 | -12.4 | -12.2 | -13.6 | -2.9 | -14.6 | -7.1 |
| Accounts receivable | 26.3 | 0.3 | 8.7 | -6.8 | -19.4 | -1.6 | -6.2 | -15.2 |
| Inventories | -0.4 | -7.4 | -3.7 | -8.8 | -7.1 | -5.6 | -8.6 | -4.8 |
| Other current assets | -4.3 | -1.5 | -3.9 | 0.2 | -0.2 | 0.5 | -1.6 | -1.9 |
| Accounts payable | -0.8 | 7.4 | 2.9 | -1.1 | 2.5 | -1.2 | 10.9 | -4.5 |
| Deferred revenues | 1.1 | 1.4 | 0.2 | | 0.3 | 0.6 | 0.3 | |
| Other | -15.0 | 4.0 | -16.6 | 4.3 | 10.4 | 4.4 | -9.5 | 19.2 |
| Other operating activities | -8.8 | 0.4 | 1.8 | 3.8 | -27.1 | -14.7 | 1.2 | 274.3 |
| Cash from operations | -4.1 | -17.0 | -20.8 | 5.8 | -26.2 | 3.1 | -4.1 | -130.2 |
| |
| Capital expenditures | -4.6 | -27.2 | -28.1 | -27.6 | -20.2 | -14.6 | -38.9 | -21.3 |
| Purchases of property and equipment | -4.6 | -27.2 | -28.1 | -27.6 | -20.2 | -14.6 | -38.9 | -21.3 |
| Purchases of intangible assets | -0.7 | | | | | | | -0.9 |
| Acquisitions | | | | | | | -5.5 | |
| Purchases of short-term investments, net | 125.2 | -0.3 | -229.4 | | | | | |
| Purchases of short-term investments | | -29.2 | -242.3 | | | | | |
| Sales of short-term investments | 125.2 | 28.9 | 12.9 | | | | | |
| Cash from investing | 120.0 | -27.5 | -257.6 | -27.6 | -20.2 | -14.6 | -44.3 | -22.3 |
| |
| Repurchase of common stock, net | | | | | | | | -0.8 |
| Option exercises | 2.4 | 6.4 | 7.8 | 8.9 | 6.7 | 16.2 | 8.5 | 8.5 |
| Financing costs | -5.8 | | -5.4 | | | | -5.0 | 0.0 |
| Other cash from financing | -6.8 | 12.7 | 4.8 | 17.8 | 13.4 | 32.4 | 7.0 | 17.0 |
| Cash from financing | -3.4 | 6.4 | 2.4 | 8.9 | 6.7 | 16.2 | 3.5 | 7.7 |
| |
| Free cash flow | -8.7 | -44.2 | -48.9 | -21.8 | -46.4 | -11.4 | -42.9 | -151.5 |
| Per share (diluted) | ($0.08) | ($0.39) | ($0.43) | ($0.20) | ($0.42) | ($0.10) | ($0.40) | ($1.50) |
| |
| Cash paid for interest | 0.4 | | 0.8 | | | | 1.2 | |
| Cash paid for income taxes | 2.5 | 0.4 | 2.9 | 0.3 | 0.5 | 1.0 | 6.8 | 0.1 |