| In millions, except per share items | Jun-25-22 | Mar-26-22 | Dec-25-21 | Sep-25-21 | Jun-26-21 | Mar-27-21 | Dec-26-20 | Sep-26-20 |
| | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q |
| Net sales | | 348.1 | 394.9 | 376.9 | | 413.9 | 448.3 | 423.7 |
| Net sales growth | | -15.9% | -11.9% | -11.0% | | 10.1% | 92.1% | 1.3% |
| Cost of products sold | | 126.1 | 154.0 | 129.0 | | 120.3 | 142.7 | 132.5 |
| Gross profit | | 222.0 | 240.9 | 247.9 | | 293.6 | 305.6 | 291.2 |
| Gross margin | | 63.8% | 61.0% | 65.8% | | 70.9% | 68.2% | 68.7% |
| Selling, general and administrative expense | | 203.4 | 206.7 | 190.7 | | 221.2 | 231.7 | 205.7 |
| Re-engineering charges | | 1.5 | 5.1 | 1.8 | | 3.1 | 5.7 | 3.9 |
| Loss (Gain) on disposal of assets | | -2.6 | 13.6 | -148.1 | | 1.0 | | |
| Operating income | | 17.5 | 44.4 | 57.1 | | 77.0 | 101.0 | 49.3 |
| Operating margin | | 5.0% | 11.2% | 15.1% | | 18.6% | 22.5% | 11.6% |
| Interest expense | | -4.6 | -5.5 | -8.2 | | -11.8 | -8.1 | -8.2 |
| Interest income | | -0.7 | -0.2 | -0.3 | | -0.3 | -0.5 | -0.3 |
| Other expense (income), net | | 4.3 | -2.5 | 1.2 | | -1.3 | -1.3 | |
| Income from continuing operations before income taxes | | 9.3 | 29.8 | 48.0 | | 64.7 | 85.0 | 51.3 |
| Provision for income taxes | | 6.8 | 10.4 | -12.4 | | 20.7 | 57.1 | 21.9 |
| Gain (loss) on held for sale assets and dispositions | | -2.6 | 13.6 | -148.1 | | 1.0 | | |
| Net income | | -0.1 | 23.8 | -86.1 | | 45.3 | 21.8 | 34.4 |
| |
| Earnings Per Share [Abstract] | | | | | | | | |
| |
| Basic weighted-average shares | | 48.0 | 49.4 | 49.4 | | 49.4 | 49.1 | 49.1 |
| Diluted weighted-average shares | | 51.3 | 53.0 | 52.8 | | 53.4 | 52.3 | 53.1 |
| |
| Basic earnings per share - Total | | | $0.48 | ($1.75) | | $0.92 | $0.45 | $0.70 |
| Diluted earnings per share - Total | | | $0.45 | ($1.63) | | $0.85 | $0.38 | $0.65 |