| 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 | -156.8 | -155.1 | -153.4 | -153.6 | -116.8 | -106.6 | -96.0 | 262.4 |
| Depreciation and amortization | 1.8 | 1.5 | 1.2 | 1.1 | 1.0 | 1.0 | 0.9 | 1.5 |
| Asset impairment charges | | 4.5 | 5.6 | 5.6 | 3.3 | 1.3 | | |
| Stock-based compensation | 7.3 | 7.5 | 7.0 | 6.2 | 5.0 | 5.0 | 4.9 | 4.3 |
| Change in working capital [+] | 26.7 | 26.0 | 26.9 | 17.1 | 14.5 | 18.7 | 28.8 | 13.5 |
| Accounts receivable | -0.8 | -0.2 | -1.2 | -0.5 | 0.0 | -0.7 | 0.0 | -0.2 |
| Inventories | -3.3 | -5.2 | -5.6 | -7.9 | -5.7 | -3.7 | -2.3 | |
| Other current assets | -6.9 | -6.0 | -0.6 | -1.0 | -4.8 | -1.2 | -0.5 | -4.5 |
| Accounts payable | -0.6 | -0.2 | -4.7 | -5.5 | -5.4 | 0.9 | 5.3 | 2.6 |
| Accrued expenses | 4.0 | 3.2 | 4.6 | 8.1 | 6.4 | -0.7 | 2.2 | 6.6 |
| Other | | | 34.3 | | | | 24.1 | |
| Other operating activities | -6.4 | -5.2 | -4.3 | 9.4 | -18.9 | -18.4 | -19.1 | -353.0 |
| Cash from operations | -124.9 | -120.8 | -116.9 | -114.1 | -111.9 | -99.0 | -80.5 | -71.3 |
| |
| Capital expenditures [+] | -6.3 | -5.7 | -2.9 | -2.8 | -2.0 | -2.2 | -2.4 | -2.5 |
| Purchases of property and equipment | -6.3 | -5.7 | -2.9 | -2.8 | -2.0 | -2.2 | -2.4 | -2.5 |
| Sales of property and equipment | | 0.2 | 0.2 | 0.0 | | | | |
| Sales of short-term investments | 254.9 | 239.8 | 263.7 | 205.2 | 182.3 | 151.7 | 254.2 | 205.4 |
| Sales of short-term investments | 254.9 | 239.8 | 263.7 | 205.2 | 182.3 | 151.7 | 254.2 | 205.4 |
| Other cash from investing | -275.5 | -255.2 | -283.0 | -223.6 | -185.5 | -157.6 | -317.8 | -507.0 |
| Cash from investing | -26.7 | -20.9 | -22.0 | -21.1 | -5.2 | -8.1 | -66.0 | -304.2 |
| |
| Option exercises | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.3 | 0.6 | 0.6 |
| Other cash from financing | 0.0 | -0.1 | 0.0 | 0.0 | 0.1 | 0.6 | 16.5 | 660.8 |
| Cash from financing | -0.1 | -0.2 | -0.1 | -0.1 | 0.0 | 0.2 | 15.9 | 543.2 |
| |
| Free cash flow | -131.2 | -126.5 | -119.8 | -116.9 | -113.9 | -101.3 | -82.9 | -73.8 |
| Per share (diluted) | ($0.74) | ($0.72) | ($0.69) | ($0.67) | ($0.66) | ($0.59) | ($0.48) | ($0.47) |
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