| In millions, except per share items | Jun-30-23 | Mar-31-23 | Sep-30-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 |
| | 10-Q | 10-Q | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
| Net income | -27.7 | -61.0 | -90.5 | -78.5 | -91.6 | | -20.6 | -29.8 |
| Depreciation and amortization | 17.1 | 17.0 | 16.3 | 16.3 | 14.8 | 14.6 | 14.3 | 13.7 |
| Asset impairment charges | | 0.1 | 0.9 | | | | | |
| Stock-based compensation | 17.6 | 19.0 | 18.1 | 16.8 | 16.8 | 15.3 | 13.1 | 13.7 |
| Change in working capital [+] | 6.6 | 91.8 | 28.5 | -140.1 | 125.5 | 105.6 | -212.4 | -153.4 |
| Accounts receivable | -20.8 | 6.7 | -10.3 | -24.1 | 17.3 | 22.3 | -7.2 | -29.6 |
| Inventories | 10.6 | 103.6 | 76.3 | -132.0 | 112.7 | 76.9 | -186.1 | -151.6 |
| Accounts payable | 4.5 | -1.7 | -7.8 | -3.9 | 9.9 | 2.4 | -15.2 | 9.8 |
| Accrued expenses | 12.3 | -16.8 | -29.7 | 20.0 | -14.4 | | -3.9 | 18.0 |
| Other operating activities | -51.5 | -40.3 | 46.8 | -62.1 | 13.5 | | 5.1 | -7.2 |
| Cash from operations | -37.8 | 26.7 | 20.0 | -247.5 | 79.0 | 112.6 | -200.5 | -162.9 |
| |
| Capital expenditures | -3.3 | -2.9 | -5.4 | -4.7 | -7.4 | -6.9 | -7.0 | -8.3 |
| Purchases of property and equipment | -3.3 | -2.9 | -5.4 | -4.7 | -7.4 | -6.9 | -7.0 | -8.3 |
| Acquisitions | | | | -97.3 | | | | -608.0 |
| Sales of short-term investments, net [+] | 56.7 | -9.1 | -16.5 | 8.3 | -71.1 | | 77.7 | -7.7 |
| Purchases of short-term investments | -19.3 | -57.6 | -63.1 | -4.6 | -77.6 | | -24.4 | -37.0 |
| Sales of short-term investments | 76.0 | 48.5 | 46.6 | 12.9 | 6.5 | | 102.1 | 29.3 |
| Other cash from investing | -12.0 | 12.0 | | 7.6 | 5.3 | | -89.5 | 89.5 |
| Cash from investing | 41.4 | 0.0 | -21.8 | -86.1 | -73.2 | -13.4 | -18.8 | -534.5 |
| |
| Option exercises | 5.5 | 0.1 | 0.4 | 7.4 | 1.9 | | 1.7 | 9.1 |
| Financing costs | | | | | -0.8 | | -0.2 | |
| Other cash from financing | -29.1 | -116.4 | -2.2 | 100.5 | -74.2 | | 70.4 | 151.1 |
| Cash from financing | -34.7 | -116.6 | -2.6 | 93.1 | -75.4 | -18.1 | 68.8 | 142.0 |
| |
| Free cash flow | -41.1 | 23.8 | 14.6 | -252.2 | 71.6 | 105.6 | -207.5 | -171.2 |
| Per share (diluted) | ($0.37) | $0.22 | $0.13 | ($2.35) | $0.67 | | ($1.97) | ($1.64) |
| |
| Cash paid for interest | 3.8 | 4.6 | 6.3 | 3.2 | 3.4 | | 3.5 | 1.1 |