| 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 | 10-Q | 10-Q | 10-Q | 10-K | 10-Q |
| Net income | 121.5 | 203.1 | 244.1 | 279.8 | 275.6 | 237.2 | 220.8 | 184.9 |
| Depreciation and amortization [+] | -20.0 | -20.0 | -20.0 | -20.1 | -20.1 | -22.6 | 0.2 | 21.9 |
| Depreciation | 0.6 | 0.6 | 0.5 | 0.5 | 0.3 | 0.2 | 0.2 | 0.1 |
| Asset impairment charges | 8.2 | 6.5 | 8.2 | 6.0 | 0.0 | 4.3 | | |
| Stock-based compensation | 11.9 | 11.0 | 10.7 | 9.7 | 7.4 | 5.0 | 4.0 | 3.7 |
| Deferred taxes | 10.4 | 8.2 | 5.6 | -9.4 | -1.1 | -1.2 | 2.5 | 2.7 |
| Change in working capital [+] | -64.1 | -109.8 | -143.9 | -163.1 | -145.3 | -80.6 | -75.4 | -68.0 |
| Accounts receivable | -9.5 | -17.2 | -46.0 | -74.6 | -67.0 | -34.1 | -26.4 | -38.8 |
| Inventories | -42.0 | -65.0 | -98.3 | -131.4 | -109.4 | -77.8 | -63.7 | -46.8 |
| Other current assets | -3.8 | -3.8 | 4.7 | 8.8 | -3.3 | -5.8 | -9.8 | -7.7 |
| Accounts payable | -5.5 | -18.1 | -7.9 | -1.3 | 3.9 | 17.6 | 2.4 | 20.1 |
| Accrued expenses | -3.3 | -5.7 | 3.6 | 35.4 | 30.5 | 34.0 | 36.8 | 19.8 |
| Other operating activities | 134.3 | 132.5 | 150.7 | 148.7 | 136.6 | 88.5 | 48.0 | 29.5 |
| Cash from operations | 202.4 | 231.4 | 255.3 | 251.5 | 253.1 | 230.7 | 200.0 | 174.8 |
| |
| Capital expenditures [+] | -4.2 | -3.8 | -3.6 | -3.6 | -2.7 | -2.3 | -1.8 | -0.8 |
| Purchases of property and equipment | -0.8 | -0.8 | -0.7 | -0.2 | -1.0 | -0.9 | -0.9 | -0.8 |
| Capitalized product costs | -3.4 | -3.0 | -2.9 | -3.4 | -1.8 | -1.3 | -0.9 | |
| Purchases of intangible assets | -0.5 | | | | | | | |
| Other cash from investing | | | | 0.9 | | | | -4.5 |
| Cash from investing | -3.7 | -2.8 | -2.7 | -2.6 | -7.1 | -6.8 | -6.3 | -5.3 |
| |
| Issuance of common stock, net | | | | | | | | 0.6 |
| Option exercises | 6.0 | 5.1 | 2.6 | 1.6 | 0.7 | | | |
| Financing costs | | | | -23.9 | | -11.9 | | |
| Other cash from financing | -24.2 | -9.4 | -137.5 | -143.3 | -136.2 | -140.4 | -19.0 | 294.7 |
| Cash from financing | -18.2 | -2.6 | -116.2 | -121.0 | -124.4 | -128.5 | -18.3 | -169.6 |
| |
| Free cash flow | 201.6 | 230.7 | 254.6 | 251.3 | 252.2 | 229.8 | 199.2 | 174.0 |
| Per share (diluted) | $0.29 | $0.33 | $0.36 | $0.36 | $0.36 | $0.33 | $0.29 | $0.26 |
| |
| Cash paid for interest | 70.6 | 58.0 | 54.7 | 49.6 | 71.8 | 68.9 | 73.5 | 68.2 |