| In millions, except per share items | Dec-31-20 | Sep-30-20 | Jun-30-20 | Jun-05-20 | Mar-31-20 | Mar-05-20 | Dec-31-19 | Sep-30-19 |
| | 10-K | 10-Q | 10-Q | 8-K | 10-Q | 8-K | 10-K | 10-Q |
| Net income | 87.8 | 75.2 | 64.6 | | 65.3 | | 64.9 | 67.7 |
| Depreciation and amortization | 14.2 | 14.0 | 14.0 | | 13.7 | | 12.6 | 11.5 |
| Stock-based compensation | 7.2 | 6.6 | 6.1 | | 5.8 | | 6.8 | 6.6 |
| Deferred taxes | -1.5 | -0.1 | 1.0 | | 1.2 | | 1.7 | 1.9 |
| Change in working capital [+] | -30.1 | -19.6 | -3.1 | | 10.9 | | -4.7 | 2.7 |
| Accounts receivable | -71.1 | -34.0 | 5.1 | | 11.3 | | -4.8 | -7.6 |
| Other current assets | -10.7 | -5.7 | -0.8 | | -3.4 | | 0.8 | 0.9 |
| Accounts payable | 18.7 | -5.1 | -7.8 | | 8.0 | | 3.6 | 8.9 |
| Accrued expenses | 35.1 | 27.8 | 5.1 | | 0.1 | | 1.8 | 2.2 |
| Other | -2.1 | 4.0 | -4.7 | | -5.1 | | -6.1 | 0.1 |
| Other operating activities | -14.8 | 9.2 | -8.8 | | -9.0 | | -9.2 | 5.3 |
| Cash from operations | 62.8 | 66.6 | 73.9 | | 87.8 | | 72.1 | 79.0 |
| |
| Capital expenditures [+] | -11.8 | -10.0 | -12.5 | | -12.3 | | -12.9 | -12.2 |
| Purchases of property and equipment | -3.4 | -3.7 | -4.0 | | -3.8 | | -4.3 | -4.9 |
| Capitalized product costs | -8.5 | -6.2 | -8.6 | | -8.4 | | -8.7 | -7.3 |
| Cash from investing | -11.8 | -12.3 | -12.5 | | -24.0 | | -26.4 | -27.9 |
| |
| Cash dividends paid | -24.4 | -23.7 | -23.0 | | -22.4 | | -21.6 | -21.6 |
| Repurchase of common stock, net | | | | | -3.9 | | | |
| Option exercises | | | | | 1.5 | | | |
| Other cash from financing | 1.0 | 1.0 | 1.0 | | 1.0 | | 0.1 | 0.2 |
| Cash from financing | -28.9 | -28.2 | -27.5 | | -26.8 | | -23.0 | -22.9 |
| |
| Free cash flow | 59.5 | 62.8 | 69.9 | | 84.0 | | 67.8 | 74.1 |
| Per share (diluted) | $0.76 | $0.85 | $0.92 | | $1.13 | | $0.88 | $1.00 |
| |
| Cash paid for income taxes | 19.6 | 16.6 | 14.3 | | 16.8 | | 16.0 | 12.8 |