Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Cash flows from operating activities:
Net loss	$ (73,694)	$ (89,883)	$ (328,352)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	17,232	22,597	18,723
Amortization of deferred contract acquisition costs	92,089	75,471	59,826
Net accretion on marketable securities	(31,778)	(28,246)	(1,782)
Stock-based compensation expense	358,151	371,955	369,840
Charitable donation of Class A common stock	6,564	4,215	5,499
Non-cash operating lease expense	15,899	13,047	11,675
Abandonment and impairment charges	0	0	2,881
(Benefit from) provision for deferred income taxes	(19,794)	554	861
Other non-cash credits, net	(2,332)	(3,700)	(2,465)
Changes in operating assets and liabilities:
Accounts receivable	(22,173)	(64,217)	(123,783)
Contract assets	(3,991)	(14,694)	(185)
Deferred contract acquisition costs	(89,157)	(118,833)	(118,909)
Prepaid expenses and other assets	7,065	4,222	(59,810)
Accounts payable	27,856	(5,052)	(1,571)
Accrued expenses and other liabilities	9,235	11,804	(14,954)
Accrued compensation and employee benefits	(23,428)	(4,039)	15,086
Operating lease liabilities, net	(15,527)	(13,590)	(3,307)
Deferred revenue	68,348	137,471	160,746
Net cash provided by (used in) operating activities	320,565	299,082	(9,981)
Cash flows from investing activities:
Purchases of marketable securities	(1,470,355)	(1,485,965)	(388,409)
Maturities of marketable securities	1,475,584	1,050,984	151,426
Purchases of property and equipment	(14,923)	(7,342)	(23,815)
Payments related to business acquisitions, net of cash acquired	0	0	(29,542)
Purchases of investments	(35,809)	0	0
Other investing, net	0	2,754	1,197
Net cash used in investing activities	(45,503)	(439,569)	(289,143)
Cash flows from financing activities:
Repurchases of Class A common stock	(390,751)	(102,615)	0
Proceeds from exercise of stock options	8,032	6,740	8,388
Payments of tax withholdings on net settlement of equity awards	(77,930)	(112,067)	(73,095)
Net receipts (payments) of tax withholdings on sell-to-cover equity award transactions	99	(645)	(9,480)
Proceeds from employee stock purchase plan contributions	15,605	17,555	15,011
Payment of deferred consideration related to business acquisition	(5,570)	(5,863)	0
Repurchase of unvested early exercised stock options	0	0	(1,493)
Net cash used in financing activities	(450,515)	(196,895)	(60,669)
Effect of exchange rate changes	(7,029)	(2,621)	(6,811)
Net decrease in cash, cash equivalents, and restricted cash	(182,482)	(340,003)	(366,604)
Cash, cash equivalents, and restricted cash at beginning of period	1,062,116	1,402,119	1,768,723
Cash, cash equivalents, and restricted cash at end of period	879,634	1,062,116	1,402,119
Supplemental disclosures of cash flow information:
Cash paid for interest	309	563	651
Cash paid for income taxes	16,709	10,822	20,999
Supplemental disclosures of non-cash investing and financing activity:
Value of shares issued in payment of business acquisitions	0	0	2,965
Loan notes issued in connection with business acquisitions	0	0	11,433
Reduction in accrued expenses and other liabilities for vesting of early exercised stock options	2	2	1,357
Tax withholdings on net settlement of restricted stock units, accrued but not yet paid	4,674	3,354	2,213
Purchases of property and equipment included in accounts payable	$ 2,897	$ 511	$ 1,056