CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	9 Months Ended
	Oct. 31, 2025	Oct. 31, 2024
Cash flows from operating activities:
Net income (loss)	$ (1,019,485,000)	$ (963,488,000)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	161,519,000	132,378,000
Non-cash operating lease costs	49,762,000	42,370,000
Amortization of deferred commissions	95,412,000	68,835,000
Stock-based compensation, net of amounts capitalized	1,195,955,000	1,051,195,000
Net accretion of discounts on investments	(18,469,000)	(33,869,000)
Net realized and unrealized losses on strategic investments in equity securities	35,520,000	35,814,000
Amortization of debt issuance costs	6,220,000	689,000
Asset impairment related to office facility exit	108,715,000	0
Deferred income tax	(3,445,000)	(532,000)
Non-cash restructuring charges (recoveries), net	(11,159,000)	1,146,000
Other	(2,273,000)	3,733,000
Changes in operating assets and liabilities, net of effects of business combinations:
Accounts receivable	(12,625,000)	328,704,000
Deferred commissions	(181,680,000)	(62,785,000)
Prepaid expenses and other assets	(2,515,000)	42,456,000
Accounts payable	36,296,000	102,721,000
Accrued expenses and other liabilities	217,846,000	38,702,000
Operating lease liabilities	(42,387,000)	(34,344,000)
Deferred revenue	(172,419,000)	(226,686,000)
Net cash provided by operating activities	440,788,000	527,039,000
Cash flows from investing activities:
Purchases of property and equipment	(85,559,000)	(35,002,000)
Capitalized software development costs	0	(23,428,000)
Cash paid for business combinations, net of cash acquired	(164,230,000)	(17,125,000)
Purchases of intangible assets	(1,311,000)	0
Purchases of investments	(1,990,216,000)	(2,288,985,000)
Sales of investments	19,397,000	54,394,000
Maturities and redemptions of investments	2,114,923,000	2,276,653,000
Settlement of cash flow hedges	0	(749,000)
Net cash used in investing activities	(106,996,000)	(34,242,000)
Cash flows from financing activities:
Proceeds from exercise of stock options	63,295,000	35,212,000
Proceeds from issuance of common stock under employee stock purchase plan	88,123,000	77,053,000
Taxes paid related to net share settlement of equity awards	(485,221,000)	(359,607,000)
Repurchases of common stock	(723,534,000)	(1,932,333,000)
Distributions to noncontrolling interest holders	(2,145,000)	0
Payments of deferred purchase consideration for business combinations	(600,000)	0
Gross proceeds from issuance of convertible senior notes	0	2,300,000,000
Cash paid for issuance costs on convertible senior notes	0	(31,230,000)
Purchases of capped calls related to convertible senior notes	0	(195,500,000)
Net cash used in financing activities	(1,060,082,000)	(106,405,000)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	12,243,000	(1,131,000)
Net increase (decrease) in cash, cash equivalents, and restricted cash	(714,047,000)	385,261,000
Cash, cash equivalents, and restricted cash—beginning of period	2,698,678,000	1,780,977,000
Cash, cash equivalents, and restricted cash—end of period	1,984,631,000	2,166,238,000
Supplemental disclosures of non-cash investing and financing activities:
Property and equipment included in accounts payable and accrued expenses	23,275,000	21,198,000
Stock-based compensation included in capitalized software development costs	0	29,081,000
Unpaid taxes related to net share settlement of equity awards included in accrued expenses and other current liabilities	8,315,000	3,438,000
Reconciliation of cash, cash equivalents, and restricted cash:
Cash and cash equivalents	1,941,657,000	2,148,928,000
Restricted cash—included in other assets and prepaid expenses and other current assets	42,974,000	17,310,000
Total cash, cash equivalents, and restricted cash	$ 1,984,631,000	$ 2,166,238,000