CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Oct. 31, 2024	Oct. 31, 2023
Cash flows from operating activities:
Net loss	$ (963,488)	$ (668,078)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	132,378	84,917
Non-cash operating lease costs	42,370	39,141
Amortization of deferred commissions	68,835	54,722
Stock-based compensation, net of amounts capitalized	1,051,195	862,517
Net accretion of discounts on investments	(33,869)	(49,226)
Net realized and unrealized losses (gains) on strategic investments in equity securities	35,814	(1,105)
Amortization of debt issuance costs	689	0
Deferred income tax	(532)	(13,107)
Other	4,879	14,286
Changes in operating assets and liabilities, net of effects of business combinations:
Accounts receivable	328,704	205,138
Deferred commissions	(62,785)	(66,470)
Prepaid expenses and other assets	42,456	51,574
Accounts payable	102,721	51,672
Accrued expenses and other liabilities	38,702	33,709
Operating lease liabilities	(34,344)	(28,739)
Deferred revenue	(226,686)	(67,409)
Net cash provided by operating activities	527,039	503,542
Cash flows from investing activities:
Purchases of property and equipment	(35,002)	(22,014)
Capitalized internal-use software development costs	(23,428)	(27,104)
Cash paid for business combinations, net of cash, cash equivalents, and restricted cash acquired	(17,125)	(279,534)
Purchases of intangible assets	0	(28,744)
Purchases of investments	(2,288,985)	(2,095,329)
Sales of investments	54,394	11,266
Maturities and redemptions of investments	2,276,653	2,751,148
Settlement of cash flow hedges	(749)	0
Net cash provided by (used in) investing activities	(34,242)	309,689
Cash flows from financing activities:
Proceeds from exercise of stock options	35,212	38,854
Proceeds from issuance of common stock under employee stock purchase plan	77,053	61,234
Taxes paid related to net share settlement of equity awards	(359,607)	(273,828)
Repurchases of common stock	(1,932,333)	(591,732)
Gross proceeds from issuance of convertible senior notes	2,300,000	0
Cash paid for issuance costs on convertible senior notes	(31,230)	0
Purchases of capped calls related to convertible senior notes	(195,500)	0
Net cash used in financing activities	(106,405)	(765,472)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	(1,131)	(4,595)
Net increase in cash, cash equivalents, and restricted cash	385,261	43,164
Cash, cash equivalents, and restricted cash—beginning of period	1,780,977	956,731
Cash, cash equivalents, and restricted cash—end of period	2,166,238	999,895
Supplemental disclosures of non-cash investing and financing activities:
Property and equipment included in accounts payable and accrued expenses	21,198	7,690
Stock-based compensation included in capitalized software development costs	29,081	37,230
Unpaid taxes related to net share settlement of equity awards included in accrued expenses and other current liabilities	3,438	5,293
Reconciliation of cash, cash equivalents, and restricted cash:
Cash and cash equivalents	2,148,928	982,182
Restricted cash—included in other assets and prepaid expenses and other current assets	17,310	17,713
Total cash, cash equivalents, and restricted cash	$ 2,166,238	$ 999,895