| In millions, except per share items | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 | Mar-31-21 | Dec-31-20 | Sep-30-20 |
| | 10-Q | 10-Q/A | 10-K | 8-K | 10-Q | 10-Q/A | 10-K | 10-Q |
| Net income | 49.1 | 66.0 | 177.4 | 0.0 | 29.2 | 43.8 | 13.5 | 48.3 |
| Depreciation and amortization [+] | 9.5 | 9.7 | -10.5 | 29.7 | 10.8 | 10.8 | 10.4 | 10.6 |
| Depreciation | | | 3.4 | 15.8 | | | | |
| Amortization | | | -13.9 | 13.9 | | | | |
| Stock-based compensation | | | -14.6 | 14.6 | | | | |
| Change in working capital [+] | 6.7 | -9.3 | 67.4 | -52.4 | -4.9 | 12.5 | -3.0 | 11.9 |
| Accounts receivable | | | 74.9 | -74.9 | | | | |
| Inventories | | | -2.2 | 2.2 | | | | |
| Other | 6.7 | -9.3 | -5.3 | 20.3 | -4.9 | 12.5 | -3.0 | 11.9 |
| Other operating activities | -8.3 | 29.0 | -173.1 | 64.9 | -15.7 | -7.3 | 41.4 | 46.1 |
| Cash from operations | 56.9 | 95.5 | 46.6 | 56.9 | 19.5 | 59.9 | 62.3 | 116.8 |
| |
| Capital expenditures | 47.5 | 21.5 | 63.6 | -36.7 | 6.1 | 6.2 | 6.2 | 6.1 |
| Purchases of property and equipment | 47.5 | 21.5 | 63.6 | -36.7 | 6.1 | 6.2 | 6.2 | 6.1 |
| Purchases of short-term investments, net | 161.7 | 159.0 | 645.7 | | 200.4 | 75.2 | 166.5 | 71.0 |
| Purchases of short-term investments | 77.2 | 111.6 | 600.9 | | 80.2 | 52.4 | 89.6 | 33.3 |
| Sales of short-term investments | 84.6 | 47.4 | 44.8 | | 120.2 | 22.8 | 76.9 | 37.7 |
| Other cash from investing | -249.4 | -266.2 | -828.9 | -34.3 | -173.1 | -117.4 | -180.4 | -78.9 |
| Cash from investing | -40.2 | -85.7 | -119.6 | -71.0 | 33.4 | -35.9 | -7.6 | -1.8 |
| |
| Cash dividends paid | | | 27.4 | -27.4 | | | | |
| Repurchase of common stock, net | -10.0 | -28.8 | -50.1 | -20.8 | -18.7 | -73.0 | 0.0 | 1.2 |
| Other cash from financing | -2.2 | -10.2 | -40.5 | 10.7 | -12.0 | -112.6 | -112.1 | -21.5 |
| Cash from financing | -12.2 | -39.0 | -63.2 | -37.5 | -30.7 | -185.7 | -112.1 | -20.2 |
| |
| Free cash flow | 104.4 | 116.9 | 110.3 | 20.2 | 25.6 | 66.1 | 68.6 | 122.9 |
| Per share (diluted) | $1.19 | $1.34 | $1.30 | $0.24 | $0.30 | $0.77 | $0.81 | $1.46 |
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