| In millions, except per share items | Jun-30-23 | Mar-31-23 | Dec-31-22 | Sep-30-22 | Jun-30-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 |
| | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
| ASSETS | | | | | | | | |
| Current assets: | | | | | | | | |
| Cash and cash equivalents | 30.4 | 31.9 | 58.1 | 55.2 | 67.4 | 55.2 | 17.0 | 18.4 |
| Accounts receivable, net of allowance of $5,145 and $5,262 respectively | 197.0 | 178.2 | 186.7 | 213.7 | 215.4 | 168.3 | 204.3 | 217.5 |
| Inventory | 37.9 | 38.0 | 36.3 | 37.0 | 36.2 | 35.4 | 37.2 | 37.8 |
| Income tax receivable | 0.8 | 0.8 | 0.8 | | 4.4 | 4.3 | 1.3 | 1.2 |
| Prepaid expenses and other current assets | 67.2 | 71.4 | 77.1 | 74.0 | 85.6 | 62.6 | 70.5 | 105.1 |
| Total current assets | 326.8 | 311.6 | 347.6 | 436.0 | 393.8 | 402.3 | 321.2 | 371.4 |
| Property, plant and equipment, net | 132.0 | 134.5 | 138.1 | 155.6 | 157.0 | 145.5 | 160.9 | 164.7 |
| Intangible assets, net | 69.0 | 72.2 | 75.4 | 80.0 | 83.2 | 88.3 | 93.2 | 96.5 |
| Operating lease right-of-use assets | 45.0 | 47.6 | 48.5 | | 52.9 | 58.5 | 63.5 | 65.6 |
| Defined benefit pension asset | 2.6 | 1.5 | 0.4 | | 4.8 | 2.9 | | |
| Other assets, net | 10.7 | 7.4 | 6.4 | | 7.4 | 8.4 | 12.5 | 11.8 |
| Deferred tax asset | 0.6 | 0.4 | 0.4 | | 0.1 | 0.7 | | 5.8 |
| Total assets | 586.7 | 575.2 | 616.6 | 713.7 | 723.8 | 706.5 | 685.4 | 806.4 |
| |
| LIABILITIES AND EQUITY | | | | | | | | |
| Current liabilities: | | | | | | | | |
| Current portion of long-term debt and finance lease obligations | 4.5 | 284.1 | 281.0 | 506.4 | 487.2 | 0.7 | 0.7 | 0.5 |
| Current portion of operating lease obligations | 14.4 | 14.6 | 13.8 | | 14.4 | 15.4 | 16.5 | 17.0 |
| Accounts payable | 36.3 | 32.0 | 32.5 | | 38.4 | 44.1 | 49.0 | 46.2 |
| Other accrued liabilities | 191.8 | 187.0 | 221.9 | 129.6 | 233.5 | 205.3 | 209.0 | 285.1 |
| Income tax payable | 1.4 | 2.7 | 2.3 | | | | | |
| Total current liabilities | 158.6 | 432.8 | 448.9 | 692.1 | 668.8 | 188.3 | 181.9 | 215.3 |
| Long-term debt and finance lease obligations | 306.3 | 4.8 | 4.9 | 4.8 | 4.7 | 405.2 | 363.0 | 356.0 |
| Operating lease obligations | 34.6 | 37.1 | 38.8 | | 43.1 | 47.6 | 51.9 | 53.7 |
| Deferred tax liabilities | 4.6 | 3.6 | 3.7 | | 3.3 | 3.8 | 2.3 | 1.2 |
| Other long-term liabilities | 2.7 | 2.7 | 2.6 | | 3.5 | 9.8 | 9.3 | 9.3 |
| Total liabilities | 506.8 | 481.1 | 498.9 | 742.4 | 723.2 | 654.7 | 610.0 | 638.5 |
| |
| Commitments and contingencies | | | | | | | | |
| Equity: | | | | | | | | |
| Common stock | 1.3 | 1.3 | 1.3 | 13.0 | 13.0 | 0.9 | 9.3 | 9.3 |
| Additional paid-in capital | 457.7 | 457.5 | 457.1 | 445.8 | 445.2 | 453.2 | 428.0 | 426.9 |
| Accumulated deficit | -342.1 | -326.4 | -301.7 | -448.6 | -425.8 | -375.6 | -332.5 | -241.3 |
| Accumulated other comprehensive loss | -37.0 | -38.2 | -39.0 | -38.9 | -31.8 | -26.7 | -29.4 | -27.0 |
| Total equity | 79.9 | 94.1 | 117.8 | -28.7 | 0.5 | 51.9 | 75.4 | 167.9 |
| Total liabilities and equity | 586.7 | 575.2 | 616.6 | 713.7 | 723.8 | 706.5 | 685.4 | 806.4 |