| In millions, except per share items | Jun-30-23 | Mar-31-23 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Jun-30-21 | Mar-31-21 | Dec-31-20 |
| | 10-K | 10-Q | 10-K | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
| Net income | -241.8 | -275.9 | -1,255.3 | -757.1 | -439.4 | -313.2 | -8.6 | 63.6 |
| Depreciation and amortization | 31.2 | | 40.4 | 38.2 | | 25.0 | 14.6 | 12.8 |
| Asset impairment charges | 32.6 | 39.4 | 348.0 | 216.7 | 7.7 | | | |
| Stock-based compensation | 71.3 | | 86.5 | 117.1 | | 85.2 | 41.7 | 37.5 |
| Change in working capital [+] | 67.4 | | 401.9 | -276.5 | | -214.1 | 51.5 | -8.9 |
| Accounts receivable | 11.1 | | -9.2 | 19.8 | | 9.1 | 24.0 | -3.0 |
| Inventories | 102.4 | | 299.6 | 128.2 | | -223.5 | -90.7 | -155.0 |
| Other current assets | 7.6 | | 8.0 | 10.3 | | 2.4 | 0.5 | -17.0 |
| Other | -53.7 | | 103.5 | -434.8 | | -2.1 | 117.7 | 166.1 |
| Other operating activities | -16.1 | 9.1 | 36.3 | -8.6 | -1.7 | -181.9 | -250.4 | 93.4 |
| Cash from operations | -55.4 | -227.4 | -342.2 | -670.2 | -433.4 | -599.0 | -151.2 | 198.4 |
| |
| Capital expenditures [+] | -18.6 | 0.0 | -69.6 | -76.6 | 0.0 | -79.4 | -52.8 | -70.9 |
| Purchases of property and equipment | -18.6 | | -69.6 | -89.3 | | -84.4 | -48.5 | -70.2 |
| Capitalized product costs | | | | 12.7 | | 5.0 | -4.3 | -0.7 |
| Acquisitions | | | | -11.0 | | -478.2 | | -78.1 |
| Sales of short-term investments, net [+] | | | | | | 148.2 | 223.8 | -273.0 |
| Purchases of short-term investments | | | | | | | | -449.1 |
| Sales of short-term investments | | | | | | 148.2 | 223.8 | 176.1 |
| Other cash from investing | 0.1 | | -0.1 | 11.0 | | 57.7 | -57.7 | 12.9 |
| Cash from investing | -18.5 | 0.0 | -69.7 | -76.6 | 0.0 | -351.7 | 113.3 | -409.1 |
| |
| Option exercises | 7.2 | | 7.6 | 22.5 | | 20.6 | -16.3 | 37.9 |
| Other cash from financing | 14.0 | | 713.7 | 44.3 | | 46.9 | 830.6 | 62.7 |
| Cash from financing | 6.8 | 0.0 | 706.1 | 21.8 | 0.0 | 26.3 | 846.9 | 24.8 |
| |
| Free cash flow | -74.0 | -227.4 | -411.8 | -759.5 | -433.4 | -683.4 | -199.7 | 128.2 |
| Per share (diluted) | ($0.21) | ($0.65) | ($1.28) | ($2.24) | ($1.37) | ($2.31) | ($0.69) | $0.37 |
| |
| Cash paid for interest | 22.3 | | | 0.5 | | 0.7 | 0.3 | |
| Cash paid for income taxes | 2.0 | | 1.5 | 4.6 | | 0.6 | 1.6 | 0.8 |