| 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 |
| Revenue: | | | | | | | | |
| Total revenue | 914.5 | 855.6 | 831.3 | 891.8 | 909.9 | 986.8 | 1,162.1 | 955.4 |
| Total revenue growth | 6.9% | 2.9% | -6.8% | -2.0% | -7.8% | -15.1% | 21.6% | 110.6% |
| Cost of revenue: | | | | | | | | |
| Total cost of revenue | 223.1 | 214.2 | 222.1 | 242.2 | 254.1 | 271.9 | 346.1 | 689.3 |
| Gross profit | 691.4 | 641.4 | 609.2 | 649.6 | 655.8 | 714.9 | 816.0 | 627.0 |
| Gross margin | 75.6% | 75.0% | 73.3% | 72.8% | 72.1% | 72.4% | 70.2% | 65.6% |
| |
| Operating expenses: | | | | | | | | |
| Research and development | 176.2 | 171.1 | 179.2 | 188.3 | 203.6 | 215.1 | 232.7 | 208.6 |
| Sales and marketing | 276.9 | 264.2 | 242.7 | 276.5 | 291.9 | 312.5 | 328.6 | 293.3 |
| General and administrative | 103.5 | 97.7 | 89.0 | 100.0 | 93.6 | 109.5 | 118.4 | 117.7 |
| Amortization of acquired intangible assets | 55.4 | 59.7 | 61.1 | 64.5 | 74.3 | 76.6 | 70.1 | 32.4 |
| Restructuring charges | 1.8 | | 0.1 | 2.7 | 18.7 | 5.2 | 4.0 | 0.5 |
| Total operating expenses | 613.8 | 592.8 | 572.1 | 632.0 | 727.4 | 718.9 | 753.9 | 652.5 |
| Loss from operations | 77.7 | 48.6 | 37.1 | 17.6 | -71.6 | -4.1 | 62.1 | -25.6 |
| Operating margin | 8.5% | 5.7% | 4.5% | 2.0% | -7.9% | -0.4% | 5.3% | -2.7% |
| |
| Interest and other expense, net: | | | | | | | | |
| Interest income | 4.9 | 0.3 | 0.6 | 4.5 | 5.2 | 1.8 | 1.0 | 0.7 |
| Interest expense | -10.2 | -8.0 | -10.9 | -20.6 | -26.1 | -12.6 | -9.2 | -6.3 |
| Other income (expense), net | -3.9 | 2.0 | -4.6 | 0.4 | -0.4 | -3.8 | -1.7 | -1.3 |
| Total interest and other expense, net | -9.2 | -5.7 | -14.8 | -15.7 | -21.3 | -14.6 | -9.9 | -6.9 |
| Loss before income tax benefit | 68.4 | 42.9 | 22.3 | 1.9 | | | | |
| Income tax benefit | 8.8 | 7.0 | 3.0 | 4.7 | -19.6 | -98.5 | 18.9 | -4.1 |
| Net loss | 59.6 | 35.9 | 19.4 | -2.8 | -73.3 | 79.8 | 33.3 | -28.4 |
| |
| Basic net loss per share (in dollars per share) | $0.83 | $0.48 | $0.26 | ($0.04) | ($0.93) | $0.91 | $0.36 | ($0.35) |
| Diluted net loss per share (in dollars per share) | $0.82 | $0.48 | $0.26 | ($0.04) | ($0.93) | $0.90 | $0.36 | ($0.35) |
| |
| Weighted average common shares outstanding used in computing: | | | | | | | | |
| Net loss per share - basic (in shares) | 71.8 | 74.0 | 73.1 | 75.2 | 78.6 | 87.4 | 92.2 | 81.9 |
| Net loss per share - diluted (in shares) | 73.0 | 75.1 | 73.8 | 75.2 | 78.6 | 88.3 | 92.9 | 81.9 |