| In millions, except per share items | Jan-31-21 | Jan-31-20 | Jan-31-19 | Jan-31-18 |
| | 10-K | 10-K | 10-K | S-1/A |
| Assets | | | | |
| Current assets: | | | | |
| Cash and cash equivalents | 428.3 | 226.9 | 44.9 | |
| Marketable securities | 254.1 | 116.8 | | |
| Trade and other receivables, net | 181.4 | 150.7 | 106.1 | |
| Deferred commissions, current | 31.1 | 22.5 | 15.9 | |
| Prepaid expenses and other current assets | 23.8 | 22.5 | 15.6 | |
| Total current assets | 918.8 | 539.3 | 182.5 | |
| Operating lease right-of-use assets | 39.1 | | | |
| Deferred commissions, noncurrent | 68.9 | 51.5 | 35.7 | |
| Goodwill | 262.9 | 79.3 | 16.7 | |
| Intangible assets, net | 60.6 | 21.3 | 0.3 | |
| Other noncurrent assets | 10.7 | 5.3 | 2.0 | |
| Total assets | 1,401.6 | 731.6 | 280.2 | |
| |
| Liabilities and stockholders' equity | | | | |
| Current liabilities: | | | | |
| Accounts payable | 11.9 | 3.6 | 1.0 | |
| Accrued expenses and other current liabilities | 58.2 | 50.0 | 29.9 | |
| Accrued compensation | 42.3 | 37.2 | 19.7 | |
| Deferred revenue, current | 293.2 | 263.1 | 210.7 | |
| Total current liabilities | 387.2 | 324.2 | 244.2 | |
| Convertible senior notes, net | 448.1 | | | |
| Deferred revenue, noncurrent | 1.4 | 1.4 | 1.2 | |
| Other liabilities | 9.1 | 8.3 | 4.2 | |
| Total liabilities | 893.4 | 333.9 | 286.7 | |
| |
| Commitments and contingencies (Note 11) | | | | |
| Stockholders' equity: | | | | |
| Common stock | 0.2 | 0.1 | | |
| Additional paid-in capital | 1,136.5 | 878.8 | 363.1 | |
| Accumulated other comprehensive income (loss) | 1.2 | -0.2 | -1.1 | |
| Accumulated deficit | -629.6 | -481.0 | -368.6 | |
| Total stockholders' equity | 508.2 | 397.8 | -6.6 | |
| Total liabilities and stockholders' equity | 1,401.6 | 731.6 | 280.2 | |