| In millions, except per share items | Jun-30-23 | Dec-31-22 | Sep-30-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 |
| | 8-K | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q |
| Net income | 0.0 | 3.6 | -81.0 | 2.9 | -1.9 | -19.8 | -3.7 | 3.4 |
| Depreciation and amortization [+] | | 23.7 | 23.9 | 22.9 | 23.7 | 33.5 | 35.6 | 35.4 |
| Depreciation | 10.6 | 13.4 | 12.1 | 11.1 | 11.8 | 12.0 | 12.6 | 12.4 |
| Amortization | | 10.3 | 11.8 | 11.8 | 12.0 | 21.5 | 23.0 | 23.0 |
| Asset impairment charges | | | 82.5 | -0.5 | 10.5 | | | |
| Stock-based compensation | | 4.3 | 3.3 | 5.2 | 5.2 | 3.7 | 2.6 | 5.7 |
| Deferred taxes | | 0.0 | 2.7 | -2.7 | -0.1 | 0.0 | -1.0 | 0.0 |
| Change in working capital [+] | | 0.5 | -42.0 | -2.9 | -2.9 | -3.4 | 89.2 | -19.0 |
| Accounts payable | | | 7.4 | | | | 29.6 | |
| Other | | 0.5 | -49.5 | -2.9 | -2.9 | -3.4 | 59.5 | -19.0 |
| Other operating activities | | -68.4 | 53.1 | -13.4 | 65.3 | -41.2 | -66.8 | -10.8 |
| Cash from operations | | -36.2 | 42.5 | 11.6 | 99.9 | -27.2 | 56.0 | 14.7 |
| |
| Capital expenditures [+] | | -12.4 | -20.7 | -12.5 | -15.5 | -12.6 | -9.8 | -8.7 |
| Purchases of property and equipment | | -12.4 | -20.7 | -12.5 | -15.5 | -12.6 | -9.8 | -8.7 |
| Sales of property and equipment | | | 4.6 | 0.0 | 0.1 | | 0.6 | 0.1 |
| Acquisitions | | -1.8 | -44.5 | | | | | -2.5 |
| Other cash from investing | | 0.0 | 18.7 | -1.7 | 3.1 | 0.2 | 19.2 | |
| Cash from investing | | -14.2 | -41.9 | -14.2 | -12.3 | -12.5 | 9.9 | -11.1 |
| |
| Cash dividends paid | | -7.0 | -6.9 | -6.9 | -7.1 | -6.8 | -6.8 | -6.9 |
| Repurchase of common stock, net | | -2.5 | -7.7 | -21.8 | -9.7 | -2.4 | -5.7 | -1.7 |
| Other cash from financing | | 31.8 | 21.2 | 23.6 | -84.2 | 71.6 | -30.5 | 4.2 |
| Cash from financing | | 22.3 | 6.6 | -5.1 | -101.0 | 62.4 | -43.0 | -4.4 |
| |
| Free cash flow | | -48.6 | 21.8 | -0.9 | 84.4 | -39.8 | 46.1 | 6.0 |
| Per share (diluted) | | ($1.57) | $0.69 | ($0.03) | $2.66 | ($1.25) | $1.44 | $0.19 |
| |