| 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 | 8-K | 10-Q | 10-Q | 10-K | 10-Q |
| Net income | 0.0 | 0.0 | 159.1 | 0.0 | 0.0 | 0.0 | 41.7 | 43.6 |
| Depreciation and amortization | 23.7 | 21.1 | 19.7 | | 13.4 | 10.3 | 11.9 | 10.2 |
| Depreciation | | | | 19.5 | | | | |
| Stock-based compensation | 0.9 | 0.8 | 2.7 | | 0.6 | 0.5 | 2.0 | |
| Change in working capital [+] | -27.2 | -37.3 | -46.6 | | 30.3 | -4.8 | 8.4 | 19.0 |
| Accounts receivable | -5.3 | 2.2 | -9.1 | | 5.3 | -5.0 | 3.0 | -0.4 |
| Other current assets | -0.2 | -1.5 | | | 0.2 | 0.1 | -0.1 | -0.4 |
| Other | -21.7 | -38.0 | -37.6 | | 24.9 | 0.0 | 5.4 | 19.8 |
| Other operating activities | 37.1 | 44.6 | 57.3 | | 40.8 | 41.9 | -11.1 | 2.0 |
| Cash from operations | 34.6 | 29.2 | 192.2 | | 85.1 | 47.9 | 52.9 | 74.8 |
| |
| Capital expenditures [+] | -27.6 | -27.8 | -141.1 | | -24.9 | -10.6 | -10.7 | -3.6 |
| Purchases of property and equipment | -27.6 | -27.8 | -141.1 | | -24.9 | -10.6 | -10.7 | -3.6 |
| Sales of property and equipment | 0.5 | | | | 0.0 | 0.0 | | 0.1 |
| Purchases of intangible assets | -0.8 | -0.6 | -5.6 | | -1.4 | -2.4 | -1.7 | 0.1 |
| Acquisitions | | | -625.6 | | -621.8 | | | |
| Other cash from investing | | 1.4 | 1.9 | | 1.2 | 0.5 | 4.0 | 0.7 |
| Cash from investing | -27.9 | -27.0 | -770.4 | | -646.9 | -12.5 | -8.4 | -2.8 |
| |
| Cash dividends paid | | | 170.9 | | | | 161.6 | |
| Financing costs | -1.2 | -0.4 | -8.2 | | -0.7 | | | 0.1 |
| Other cash from financing | -11.2 | 0.4 | 402.8 | | 572.1 | -37.0 | -206.7 | -69.2 |
| Cash from financing | -9.9 | 0.8 | 581.9 | | 572.8 | -37.0 | -45.1 | -69.3 |
| |
| Free cash flow | 7.0 | 1.4 | 51.1 | | 60.2 | 37.3 | 42.2 | 71.2 |
| Per share (diluted) | $0.16 | $0.03 | $1.17 | | $1.38 | $0.86 | $0.97 | $1.64 |
| |
| Cash paid for interest | 45.2 | 20.2 | | | 26.2 | 2.1 | 25.5 | 2.1 |