| In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-05-18 | Dec-31-17 | Dec-31-16 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 8-K | 10-K | 10-K |
| Net income | 164.1 | 58.5 | -13.9 | 33.3 | -120.6 | -120.6 | 9.2 | -2.0 |
| Depreciation and amortization | 109.7 | 96.5 | 127.8 | 100.3 | 83.2 | | 89.4 | 92.4 |
| Depreciation | | | | | | 83.2 | | |
| Stock-based compensation | 6.1 | 3.8 | 3.5 | 2.7 | 2.9 | | 3.2 | 2.7 |
| Deferred taxes | 43.7 | 16.9 | -5.4 | 5.7 | 0.4 | | -81.2 | -2.2 |
| Change in working capital [+] | -108.1 | -1.2 | 147.2 | 71.6 | 79.3 | | 67.3 | 33.8 |
| Accounts receivable | -95.9 | -17.1 | 78.3 | -76.6 | 27.3 | | -18.4 | -14.5 |
| Inventories | -74.3 | -19.0 | 23.5 | 0.2 | -9.1 | | -3.6 | -19.7 |
| Other current assets | -6.9 | -8.0 | -1.5 | 5.2 | 1.4 | | 1.8 | 21.6 |
| Other | 69.1 | 42.9 | 47.0 | 142.9 | 59.7 | | 87.6 | 46.4 |
| Other operating activities | -31.8 | -20.1 | -14.8 | -131.2 | 28.1 | | -73.5 | -14.0 |
| Cash from operations | 183.7 | 154.5 | 244.4 | 82.5 | 73.3 | | 14.3 | 110.8 |
| |
| Capital expenditures [+] | -186.5 | -104.9 | -54.4 | -393.6 | -144.8 | | -124.1 | 0.0 |
| Purchases of property and equipment | -186.5 | -104.9 | -54.4 | -393.6 | -144.8 | | -124.1 | |
| Sales of property and equipment | | | | | 55.8 | | 109.4 | 193.1 |
| Acquisitions | -109.4 | | | | -10.5 | | -19.9 | -71.9 |
| Other cash from investing | 1.8 | 10.9 | -0.8 | 7.2 | 298.7 | | -27.3 | -341.2 |
| Cash from investing | -294.1 | -93.9 | -55.2 | -386.4 | 199.3 | | -61.9 | -220.0 |
| |
| Repurchase of common stock, net | -2.2 | -2.0 | -1.8 | -0.3 | -1.7 | | -1.2 | -1.4 |
| Other cash from financing | -7.5 | -5.7 | 278.4 | 7.0 | -0.7 | | 2.0 | 0.4 |
| Cash from financing | -9.7 | -7.7 | 276.6 | 6.7 | -2.4 | | 0.8 | -1.0 |
| |
| Free cash flow | -2.8 | 49.6 | 190.0 | -311.1 | -71.5 | | -109.7 | 110.8 |
| Per share (diluted) | ($0.20) | $3.48 | $17.34 | ($39.97) | ($9.35) | | ($2.92) | $3.00 |
| |
| Cash paid for interest | 46.3 | 44.2 | 28.0 | 27.8 | 29.3 | | 31.6 | 29.8 |
| Cash paid for income taxes | 5.7 | 0.7 | -1.2 | -1.7 | -0.2 | | 0.3 | 0.2 |