| In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 |
| | 20-F | 20-F | 20-F | 20-F |
| Net income | 86.5 | -7.2 | 52.5 | 55.1 |
| Depreciation and amortization | 131.0 | 73.0 | 36.2 | 34.4 |
| Asset impairment charges | 0.4 | | 1.2 | |
| Stock-based compensation | 4.5 | 0.8 | | |
| Deferred taxes | -35.0 | -23.2 | -0.7 | -8.0 |
| Change in working capital [+] | -17.2 | -84.5 | 60.4 | 9.3 |
| Accounts receivable | 19.7 | -20.5 | 32.6 | 29.7 |
| Inventories | -38.3 | -56.6 | -18.0 | -6.2 |
| Accrued expenses | -3.8 | -8.3 | 43.0 | -15.0 |
| Other | 5.2 | 1.0 | 2.8 | 0.7 |
| Other operating activities | 68.7 | 57.5 | -5.0 | -15.5 |
| Cash from operations | 238.9 | 16.4 | 144.6 | 75.2 |
| |
| Capital expenditures [+] | -98.0 | -65.4 | -23.2 | -27.0 |
| Purchases of property and equipment | -98.0 | -65.4 | -23.2 | -27.0 |
| Sales of property and equipment | 36.7 | 26.3 | 0.9 | 0.8 |
| Acquisitions | -4.9 | 103.6 | 0.3 | -4.9 |
| Other cash from investing | -0.3 | 18.4 | -3.6 | -10.9 |
| Cash from investing | -66.5 | 82.8 | -25.6 | -42.0 |
| |
| Cash dividends paid | -30.4 | -17.1 | -11.9 | -14.9 |
| Issuance of common stock, net | | 398.9 | | |
| Option exercises | | 7.0 | 0.2 | 0.1 |
| Financing costs | -0.3 | -22.1 | | |
| Other cash from financing | -143.3 | -398.2 | -88.6 | -4.8 |
| Cash from financing | -173.4 | -1.3 | -100.6 | -19.8 |
| |
| Free cash flow | 140.9 | -49.1 | 121.4 | 48.3 |
| Per share (diluted) | $1.48 | ($0.68) | $2.18 | $0.87 |
| |
| Cash paid for interest | -53.6 | -26.7 | -10.9 | -10.7 |
| Cash paid for income taxes | -50.5 | -26.9 | -19.3 | -16.9 |