| In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Mar-31-16 |
| | 8-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Net income | 0.0 | -283.7 | -75.0 | -18.3 | -9.6 | -7.9 | -13.2 | -15.1 |
| Depreciation and amortization | | 20.2 | 9.9 | 2.4 | 0.9 | 0.7 | 0.4 | 0.2 |
| Stock-based compensation | | 15.3 | 8.9 | 7.0 | 5.5 | 3.5 | 3.1 | 2.9 |
| Deferred taxes | | | | | | 8.0 | | |
| Change in working capital [+] | | 13.3 | 10.5 | 2.7 | 0.5 | -5.3 | 1.7 | 3.1 |
| Inventories | | -6.0 | 1.3 | -0.3 | -0.1 | 0.0 | -0.1 | -0.1 |
| Other current assets | | 3.1 | -7.5 | -0.3 | -0.2 | -0.3 | 0.0 | -0.2 |
| Other | | 16.2 | 16.7 | 3.3 | 0.8 | -5.0 | 1.8 | 3.3 |
| Other operating activities | | 242.9 | 30.9 | 4.9 | -0.6 | -2.6 | 2.3 | 2.6 |
| Cash from operations | | 8.1 | -14.9 | -1.3 | -3.4 | -3.6 | -5.7 | -6.3 |
| |
| Capital expenditures [+] | | -24.8 | -9.5 | -5.3 | -2.9 | -1.7 | -1.1 | -1.1 |
| Purchases of property and equipment | | -23.9 | -8.9 | -5.3 | -2.9 | -1.7 | -1.1 | -1.1 |
| Capitalized product costs | | -0.9 | -0.6 | | | | | |
| Purchases of intangible assets | | -0.3 | -0.2 | -0.1 | 0.0 | -0.1 | 0.0 | |
| Acquisitions | | -5.5 | -363.1 | -20.3 | | | | |
| Purchases of short-term investments, net | | -438.7 | -9.5 | -37.2 | -9.9 | | | |
| Purchases of short-term investments | | -482.7 | -158.7 | -43.2 | -9.9 | | | |
| Sales of short-term investments | | 44.0 | 149.2 | 6.0 | | | | |
| Cash from investing | | -469.3 | -382.3 | -62.9 | -12.9 | -1.8 | -1.1 | -1.1 |
| |
| Issuance of common stock, net | | | 28.2 | | 9.8 | 11.4 | | 5.9 |
| Financing costs | | | -4.1 | | -0.3 | | | |
| Other cash from financing | | 564.3 | 353.3 | 74.2 | 28.4 | 4.5 | 6.1 | 2.9 |
| Cash from financing | | 564.3 | 385.6 | 74.2 | 38.5 | 15.9 | 6.1 | 8.8 |
| |
| Free cash flow | | -15.8 | -23.8 | -6.7 | -6.3 | -5.3 | -6.8 | -7.4 |
| Per share (diluted) | | ($0.36) | ($0.63) | ($0.20) | ($0.22) | ($0.23) | ($0.48) | ($1.01) |
| |
| Cash paid for interest | | 3.3 | 1.8 | 0.7 | 0.0 | 0.0 | 0.0 | 0.1 |