| 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 | -83.1 | -84.0 | -50.2 | -14.0 | 6.5 | 2.1 | -20.7 | -44.1 |
| Adjustments to reconcile net (loss) income to net cash from operating activities: | | | | | | | | |
| Depreciation and amortization | 39.9 | 37.5 | 34.6 | 31.7 | 28.6 | 25.9 | 22.9 | 20.1 |
| (Accretion) amortization of (discounts) premiums on marketable securities | -13.3 | -2.5 | | | 14.8 | 15.9 | 16.2 | 16.2 |
| Amortization of issuance costs | 1.7 | 1.7 | | | 3.4 | 3.4 | 3.3 | 10.7 |
| Amortization of deferred contract costs | 18.0 | 15.2 | | | 22.6 | 20.1 | 17.9 | 15.7 |
| Stock-based compensation, net of amounts capitalized | 231.1 | 195.1 | | | 249.6 | 201.8 | 163.7 | 132.1 |
| Non-cash lease expense | 12.2 | 11.2 | | | 18.8 | 17.6 | 17.2 | 16.7 |
| Allowance for credit losses on accounts receivable | 6.3 | 4.9 | | | 3.7 | 3.1 | 2.3 | 1.9 |
| Loss on disposal of property and equipment | 0.4 | 0.4 | | | 1.3 | 1.1 | 0.3 | 0.3 |
| Changes in operating assets and liabilities: | | | | | | | | |
| Accounts receivable, net | -37.5 | -99.6 | -135.7 | -129.0 | -120.3 | -123.7 | -107.1 | -104.9 |
| Deferred contract costs | -78.7 | -76.2 | -72.6 | | -47.5 | -44.2 | -42.8 | -36.9 |
| Prepaid expenses and other current assets | -10.8 | -14.0 | -6.6 | -11.1 | -10.8 | -3.1 | -0.7 | 1.5 |
| Other assets | -1.2 | -4.2 | -5.2 | -2.7 | -3.4 | -4.0 | -2.6 | -0.3 |
| Accounts payable | 0.4 | 24.9 | -1.3 | -6.9 | 18.9 | 4.7 | 3.1 | 12.6 |
| Accrued expenses and other liabilities | -44.1 | -29.5 | | | 25.7 | 24.7 | 37.3 | 16.3 |
| Deferred revenue | 39.0 | 19.3 | | | 191.8 | 237.0 | 176.3 | 136.7 |
| Net cash provided by operating activities | 485.0 | 404.8 | 418.4 | 419.8 | 403.5 | 382.3 | 286.5 | 194.6 |
| |
| CASH FLOWS FROM INVESTING ACTIVITIES: | | | | | | | | |
| Purchases of marketable securities | -2,085.3 | -1,841.8 | -1,413.7 | -1,295.8 | -1,353.3 | -1,304.9 | -1,125.5 | -1,214.9 |
| Maturities of marketable securities | 1,018.3 | 814.7 | | | 993.1 | 993.0 | 1,046.6 | 1,173.7 |
| Proceeds from sale of marketable securities | 36.6 | 21.3 | | | 28.0 | 63.3 | 67.7 | 139.1 |
| Purchases of property and equipment | -46.3 | -50.0 | -50.8 | | -21.2 | -18.5 | -10.0 | -8.6 |
| Capitalized software development costs | -32.6 | -30.4 | -29.6 | -28.3 | -28.5 | -27.9 | -26.1 | -25.5 |
| Cash paid for acquisition of businesses; net of cash acquired | -47.9 | | -85.4 | | -65.7 | -219.9 | -226.5 | -200.2 |
| Net cash used in investing activities | -481.1 | -490.6 | -384.7 | -441.6 | -447.6 | -514.8 | -273.7 | -136.4 |
| |
| CASH FLOWS FROM FINANCING ACTIVITIES: | | | | | | | | |
| Proceeds from exercise of stock options | 57.1 | 47.4 | 49.6 | 46.4 | 39.2 | 36.2 | 35.2 | 14.3 |
| Proceeds from issuance of common stock under the employee stock purchase plan | 39.6 | 31.0 | 33.1 | 25.9 | 24.0 | 21.2 | 20.3 | |
| Repayments of convertible senior notes | | | 0.0 | | | 0.0 | | |
| Net cash provided by financing activities | 43.5 | 33.9 | 36.0 | 36.6 | 39.2 | 36.2 | 34.9 | 31.3 |
| Effect of exchange rate changes on cash, cash equivalents and restricted cash | -1.1 | -3.6 | -4.8 | | -4.2 | -1.8 | -2.0 | -1.0 |
| |
| SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION: | | | | | | | | |
| Cash paid for income taxes | 10.7 | 3.1 | | | 1.3 | 1.5 | 1.5 | 1.2 |
| SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES: | | | | | | | | |
| Accrued property and equipment purchases | 0.3 | -1.6 | | | 1.9 | 4.5 | 1.7 | 1.2 |
| Stock-based compensation included in capitalized software development costs | 8.2 | 7.6 | | | 12.3 | 11.0 | 9.7 | 8.6 |
| Vesting of early exercised options | | | | | | 0.3 | 0.6 | 0.8 |
| Issuance of restricted shares of common stock for the acquisition of businesses | | | | | 13.8 | | 57.7 | |
| 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 | | | | | | | | |