| In millions, except per share items | Mar-31-23 | Mar-31-22 | Mar-31-21 | Mar-31-20 | Mar-31-19 | Mar-31-18 | Mar-31-17 | Mar-31-16 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Net income | 59.6 | 35.9 | 19.4 | -2.8 | -73.3 | 79.8 | 33.3 | -28.4 |
| Depreciation and amortization | 85.9 | 95.8 | 105.8 | 116.1 | 137.9 | 153.5 | 160.9 | 140.1 |
| Asset impairment charges | | | | | 35.9 | | | |
| Stock-based compensation | 62.0 | 56.1 | 51.9 | 50.9 | 56.3 | 47.3 | 39.2 | 28.4 |
| Deferred taxes | -54.0 | -12.7 | -23.8 | -9.8 | -33.4 | -127.8 | -11.0 | -42.1 |
| Change in working capital [+] | 25.6 | 31.8 | 63.2 | 64.4 | 2.0 | 77.1 | -29.0 | -7.3 |
| Accounts receivable | 4.9 | 49.3 | 16.9 | 21.5 | -22.2 | 85.0 | -48.1 | -23.3 |
| Inventories | 9.0 | -8.0 | -2.0 | 1.5 | 5.3 | 1.0 | 12.5 | 5.5 |
| Other current assets | 5.0 | -13.0 | 11.5 | 13.8 | 3.0 | 20.1 | -24.8 | -29.5 |
| Accounts payable | -5.5 | 4.2 | -1.7 | -4.3 | -3.9 | -8.9 | 0.4 | 2.3 |
| Deferred revenues | | | | | | | | 25.6 |
| Income taxes | 0.2 | -3.1 | 6.7 | -0.9 | -0.6 | -2.7 | 2.0 | 3.9 |
| Other | 12.1 | 2.4 | 32.0 | 32.8 | 20.4 | -17.4 | 29.0 | 8.0 |
| Other operating activities | -22.5 | 89.1 | -2.6 | 6.2 | 24.5 | -7.5 | 33.4 | 6.6 |
| Cash from operations | 156.7 | 296.0 | 213.9 | 225.0 | 149.8 | 222.5 | 226.8 | 97.2 |
| |
| Capital expenditures [+] | -10.5 | -10.4 | -12.0 | -19.9 | -23.5 | -16.1 | -31.1 | -26.4 |
| Purchases of property and equipment | -10.5 | -10.4 | -12.0 | -19.9 | -23.4 | -15.9 | -29.7 | -24.8 |
| Capitalized product costs | | | | | -0.1 | -0.1 | -1.4 | -1.6 |
| Purchases of intangible assets | -0.2 | -0.1 | -4.5 | | | -0.5 | -1.0 | -4.0 |
| Acquisitions | | | | -11.3 | | -8.3 | -4.6 | 27.7 |
| Sales of short-term investments, net [+] | 25.9 | -57.8 | 41.1 | 26.9 | 0.7 | 81.9 | -18.5 | 18.6 |
| Purchases of short-term investments | -114.5 | -78.4 | -15.7 | -117.4 | -229.8 | -114.2 | -199.8 | -100.3 |
| Sales of short-term investments | 140.5 | 20.6 | 56.8 | 144.3 | 230.4 | 196.0 | 181.3 | 118.9 |
| Other cash from investing | 0.0 | -0.2 | 0.1 | 0.0 | -3.4 | 0.2 | 13.7 | 9.2 |
| Cash from investing | 15.3 | -68.4 | 24.7 | -4.3 | -26.3 | 57.1 | -41.6 | 25.1 |
| |
| Repurchase of common stock, net | -150.0 | -35.7 | -3.3 | -175.0 | -14.5 | -501.3 | -80.0 | -302.8 |
| Option exercises | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
| Financing costs | | -3.7 | | | | | | |
| Other cash from financing | -269.4 | -22.2 | -115.0 | -111.9 | -64.8 | 280.4 | -9.6 | 285.6 |
| Cash from financing | -419.4 | -54.2 | -118.3 | -286.9 | -79.3 | -221.0 | -89.6 | -17.2 |
| |
| Free cash flow | 146.2 | 285.7 | 201.9 | 205.1 | 126.4 | 206.5 | 197.1 | 72.4 |
| Per share (diluted) | $2.00 | $3.80 | $2.74 | $2.73 | $1.61 | $2.34 | $2.11 | $0.86 |
| |
| Cash paid for interest | 8.1 | 5.0 | 7.7 | 17.6 | 23.3 | 9.6 | 6.4 | 3.8 |
| Cash paid for income taxes | 55.9 | 31.7 | 11.5 | 13.1 | 13.4 | 18.2 | 49.3 | 50.7 |