| 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 | 99.5 | 109.8 | 119.1 | 124.3 | 114.7 | 79.6 | 72.7 | 68.8 |
| Depreciation and amortization | 10.0 | 10.0 | 8.8 | 9.7 | 9.6 | 9.1 | 8.3 | 7.7 |
| Stock-based compensation | 38.0 | 37.0 | 35.3 | 43.0 | 42.9 | 39.8 | 31.2 | 31.6 |
| Deferred taxes | -0.4 | -0.6 | -12.0 | 0.2 | -1.0 | -0.4 | -3.8 | 0.0 |
| Change in working capital [+] | -47.7 | 64.7 | -92.4 | -25.8 | -73.2 | -18.3 | -78.6 | 18.0 |
| Accounts receivable | 15.1 | -1.6 | -29.3 | -27.9 | -5.2 | -15.5 | -24.9 | -2.3 |
| Inventories | 3.8 | 16.1 | -49.8 | -37.8 | -48.6 | -51.8 | -51.4 | -30.7 |
| Accounts payable | 13.5 | -0.9 | -17.5 | 0.1 | 10.3 | -4.2 | 2.9 | 17.2 |
| Accrued expenses | -11.1 | 17.5 | 10.0 | 11.8 | -9.1 | 9.8 | 0.6 | 10.7 |
| Income taxes | -34.9 | 20.1 | 10.8 | 7.5 | -17.8 | 16.0 | 7.7 | 2.4 |
| Other | -34.0 | 13.4 | -16.5 | 20.5 | -2.9 | 27.4 | -13.5 | 20.6 |
| Other operating activities | -9.2 | -2.1 | -6.5 | -169.6 | 12.3 | -2.4 | -1.6 | -8.3 |
| Cash from operations | 90.2 | 218.8 | 52.2 | -18.2 | 105.2 | 107.4 | 28.2 | 117.8 |
| |
| Capital expenditures | -7.8 | -8.9 | -12.8 | -7.3 | -11.8 | -26.9 | -17.6 | -18.6 |
| Purchases of property and equipment | -7.8 | -8.9 | -12.8 | -7.3 | -11.8 | -26.9 | -17.6 | -18.6 |
| Purchases of intangible assets | | | | | | | | -0.8 |
| Purchases of short-term investments, net | -2.6 | 23.4 | -24.3 | 38.9 | 31.6 | 16.0 | -21.7 | -67.4 |
| Purchases of short-term investments | -82.1 | -129.3 | -47.5 | | -2.1 | -16.2 | -40.7 | -98.8 |
| Sales of short-term investments | 79.5 | 152.7 | 23.2 | 38.9 | 33.7 | 32.3 | 19.1 | 31.4 |
| Other cash from investing | -1.6 | -2.2 | -13.1 | -0.6 | -1.5 | -0.8 | -0.5 | -0.1 |
| Cash from investing | -12.1 | 12.3 | -50.2 | 31.0 | 18.3 | -11.6 | -39.7 | -86.9 |
| |
| Cash dividends paid | -49.1 | -36.7 | -36.4 | -36.3 | -36.5 | -28.8 | -28.6 | -28.5 |
| Option exercises | 0.0 | 4.8 | 1.0 | 4.1 | 1.0 | 5.1 | 2.2 | 4.6 |
| Other cash from financing | -0.8 | 9.3 | 1.6 | 7.8 | 1.4 | 9.7 | 3.6 | 8.3 |
| Cash from financing | -50.0 | -32.3 | -35.9 | -32.6 | -36.1 | -24.2 | -27.2 | -24.8 |
| |
| Free cash flow | 82.4 | 210.0 | 39.4 | -25.5 | 93.4 | 80.5 | 10.6 | 99.2 |
| Per share (diluted) | $1.69 | $4.32 | $0.81 | ($0.53) | $1.93 | $1.67 | $0.22 | $2.07 |
| |
| Cash paid for income taxes | 59.5 | -1.3 | 23.6 | 20.3 | 40.9 | 0.2 | 4.9 | 7.2 |