| 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 | 8-K | 10-Q | 10-Q | 10-K | 10-Q |
| CASH FLOWS FROM OPERATING ACTIVITIES: | | | | | | | | |
| Net (loss) income | -4.0 | -24.1 | -29.0 | -26.0 | -4.9 | 9.7 | 7.2 | -5.5 |
| Adjustments to reconcile net (loss) income to net cash from operating activities: | | | | | | | | |
| Depreciation and amortization | 10.6 | 10.3 | 9.8 | 9.3 | 8.1 | 7.4 | 6.9 | 6.2 |
| (Accretion) amortization of (discounts) premiums on marketable securities | -8.1 | -5.2 | | | 2.7 | 4.0 | 4.4 | 3.7 |
| Amortization of issuance costs | 0.8 | 0.8 | | | 0.8 | 0.8 | 0.8 | 0.8 |
| Amortization of deferred contract costs | 9.3 | 8.6 | | | 6.6 | 6.0 | 5.3 | 4.7 |
| Stock-based compensation, net of amounts capitalized | 118.3 | 112.7 | | | 82.4 | 66.9 | 56.4 | 44.0 |
| Non-cash lease expense | 6.3 | 5.9 | | | 5.3 | 4.4 | 4.6 | 4.5 |
| Allowance for credit losses on accounts receivable | 2.6 | 3.7 | | | 1.1 | 0.8 | 1.1 | 0.7 |
| Loss on disposal of property and equipment | 0.3 | 0.1 | | | 0.3 | 0.8 | 0.0 | 0.1 |
| Changes in operating assets and liabilities: | | | | | | | | |
| Accounts receivable, net | 31.4 | 28.8 | -52.0 | -45.6 | -30.8 | -7.3 | -45.2 | -37.0 |
| Deferred contract costs | -15.9 | -11.8 | -51.1 | | -13.3 | -8.2 | -15.2 | -10.9 |
| Prepaid expenses and other current assets | -1.0 | -15.8 | 4.7 | 1.3 | -4.2 | -8.4 | 0.2 | 1.6 |
| Other assets | 2.1 | 0.2 | -3.3 | -0.2 | -0.9 | -0.8 | -0.8 | -0.9 |
| Accounts payable | 6.4 | 18.5 | -3.8 | -20.7 | 30.8 | -7.6 | -9.4 | 5.1 |
| Accrued expenses and other liabilities | -16.0 | -28.1 | | | -1.4 | -2.9 | 18.0 | 11.9 |
| Deferred revenue | 10.1 | 29.0 | | | -9.7 | 81.7 | 81.4 | 38.3 |
| Net cash provided by operating activities | 153.2 | 133.8 | 114.4 | 83.6 | 73.0 | 147.4 | 115.8 | 67.4 |
| |
| CASH FLOWS FROM INVESTING ACTIVITIES: | | | | | | | | |
| Purchases of marketable securities | -632.5 | -757.8 | -346.0 | -348.9 | -389.1 | -329.7 | -228.1 | -406.4 |
| Maturities of marketable securities | 520.7 | 497.6 | | | 317.1 | 199.7 | 110.9 | 365.5 |
| Proceeds from sale of marketable securities | 15.3 | 21.3 | | | 0.0 | 2.0 | 6.6 | 19.4 |
| Purchases of property and equipment | -2.3 | -8.7 | -35.3 | | -6.0 | -9.5 | -2.4 | -3.3 |
| Capitalized software development costs | -9.1 | -8.7 | -8.0 | -6.8 | -6.8 | -8.0 | -6.7 | -7.0 |
| Cash paid for acquisition of businesses; net of cash acquired | -2.0 | | -45.9 | | -34.7 | -4.9 | -26.3 | 0.1 |
| Net cash used in investing activities | -110.0 | -256.2 | -89.1 | -25.7 | -119.5 | -150.4 | -146.0 | -31.7 |
| |
| CASH FLOWS FROM FINANCING ACTIVITIES: | | | | | | | | |
| Proceeds from exercise of stock options | 25.4 | 2.1 | 27.8 | 1.8 | 15.8 | 4.2 | 24.5 | -5.3 |
| Proceeds from issuance of common stock under the employee stock purchase plan | 17.9 | 2.1 | 17.8 | 1.8 | 9.3 | 4.2 | 10.5 | |
| Repayments of convertible senior notes | | | 0.0 | | | 0.0 | | |
| Net cash provided by financing activities | 25.4 | 2.1 | 14.2 | 1.8 | 15.8 | 4.2 | 14.7 | 4.5 |
| Effect of exchange rate changes on cash, cash equivalents and restricted cash | 0.2 | 0.6 | -1.9 | | -2.2 | -0.6 | -0.6 | -0.8 |
| NET DECREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH | -51.0 | | | | -32.4 | | | |
| |
| SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION: | | | | | | | | |
| Cash paid for income taxes | 7.7 | 3.0 | | | 0.0 | 0.3 | 0.5 | 0.4 |
| SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES: | | | | | | | | |
| Accrued property and equipment purchases | 0.0 | 0.3 | | | -1.9 | 3.0 | 0.5 | 0.3 |
| Stock-based compensation included in capitalized software development costs | 4.0 | 4.2 | | | 3.3 | 3.5 | 2.9 | 2.6 |
| Vesting of early exercised options | | | | | | 0.0 | 0.0 | 0.0 |
| Issuance of restricted shares of common stock for the acquisition of businesses | | | | | 7.6 | | 6.2 | |
| Acquisition holdback | 0.8 | | | | 5.5 | | | |
| RECONCILIATION OF CASH, CASH EQUIVALENTS AND RESTRICTED CASH WITHIN THE CONDENSED CONSOLIDATED BALANCE SHEETS TO THE AMOUNTS SHOWN IN THE STATEMENTS OF CASH FLOWS ABOVE: | | | | | | | | |
| Cash and cash equivalents | | | | | | | | |
| Restricted cash | | | | | | | | |