| 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 | 17.9 | 20.3 | 21.5 | 24.2 | 26.7 | 43.3 | 4.1 | 21.4 |
| Depreciation and amortization [+] | 3.7 | 3.6 | 3.5 | 11.1 | 3.9 | 4.0 | 7.9 | 3.7 |
| Depreciation | 3.3 | 3.2 | 2.9 | 10.0 | 3.6 | 3.5 | 7.4 | 3.4 |
| Amortization of intangible assets | 0.5 | 0.5 | 0.6 | 1.2 | 0.3 | 0.4 | 0.4 | 0.3 |
| Stock-based compensation | 1.7 | 1.5 | 1.7 | 4.5 | 1.5 | 1.3 | 1.3 | 1.1 |
| Deferred taxes | 2.4 | -0.7 | 20.6 | -1.5 | -2.2 | 3.2 | 9.3 | -1.5 |
| Change in working capital [+] | 10.3 | -18.3 | -30.6 | 24.6 | 39.7 | -21.3 | -5.9 | -11.5 |
| Accrued expenses | 10.6 | -3.3 | -5.6 | -5.0 | -0.4 | -7.7 | -2.9 | -19.7 |
| Other | -0.3 | -15.0 | -25.0 | 29.7 | 40.1 | -13.6 | -3.0 | 8.2 |
| Other operating activities | 3.3 | 4.7 | 8.9 | 47.6 | 0.3 | -25.2 | 13.3 | -1.6 |
| Cash from operations | 39.4 | 11.1 | 25.6 | 110.5 | 69.9 | 5.3 | 30.0 | 11.6 |
| |
| Capital expenditures | -2.4 | -2.6 | -1.6 | -2.6 | -0.9 | -0.5 | -0.6 | -0.5 |
| Purchases of property and equipment | -2.4 | -2.6 | -1.6 | -2.6 | -0.9 | -0.5 | -0.6 | -0.5 |
| Acquisitions | | | | -10.3 | | | 475.6 | |
| Sales of short-term investments, net [+] | 40.0 | -101.7 | 87.1 | 84.8 | 67.0 | 30.3 | 56.1 | 40.0 |
| Purchases of short-term investments | | -101.7 | -135.2 | -27.5 | -10.0 | -5.0 | -85.9 | |
| Sales of short-term investments | 40.0 | | 222.3 | 112.3 | 77.0 | 35.3 | 142.0 | 40.0 |
| Other cash from investing | -113.5 | 49.9 | 53.2 | -61.1 | -46.0 | -184.7 | -119.8 | -250.2 |
| Cash from investing | -75.9 | -54.4 | 138.7 | 10.8 | 20.1 | -155.0 | 411.3 | -210.7 |
| |
| Cash dividends paid | -5.9 | -5.6 | -3.5 | -11.0 | -3.7 | -3.8 | -3.8 | -3.0 |
| Repurchase of common stock, net | -18.0 | -3.4 | -18.9 | -56.2 | -38.9 | -4.3 | | |
| Other cash from financing | -666.8 | 834.5 | -169.1 | -26.2 | -58.6 | 183.9 | -395.3 | 224.7 |
| Cash from financing | -690.7 | 825.4 | -191.5 | -93.4 | -101.2 | 175.8 | -399.1 | 221.6 |
| |
| Free cash flow | 37.0 | 8.4 | 24.1 | 108.0 | 69.0 | 4.7 | 29.5 | 11.1 |
| Per share (diluted) | $0.64 | $0.14 | $0.39 | $1.78 | $1.12 | $0.08 | $0.55 | $0.22 |
| |
| Cash paid for interest | 45.7 | 26.0 | 24.2 | 28.9 | 12.3 | 4.3 | 11.2 | 5.1 |