CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Cash flows from operating activities:
Net income	$ 1,900,148	$ 1,010,238	$ 637,462
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation expense	760,776	931,309	1,057,161
Deferred income taxes	105,035	(90,551)	(116,679)
Amortization of deferred contract acquisition costs	283,382	282,103	270,701
Gains on strategic investments, net	(969,822)	(177,142)	(109,770)
Depreciation and amortization	132,831	122,632	104,451
Provision for accounts receivable allowances	17,351	20,022	35,244
Unrealized foreign exchange (gains) losses	(11,405)	17,165	12,259
Non-cash operating lease cost	24,778	24,066	21,066
Charitable donation of common stock	20,904	0	0
Amortization of discount/premium on marketable securities	(28,910)	(71,636)	(50,770)
Other	22,307	4,048	(7,670)
Changes in operating assets and liabilities:
Accounts receivable	2,823	26,640	53,270
Prepaid expenses and other assets	(28,821)	(17,114)	(71,247)
Deferred contract acquisition costs	(295,949)	(246,727)	(214,657)
Accounts payable	(613)	(3,133)	(4,416)
Accrued expenses and other liabilities	19,761	62,277	51,974
Deferred revenue	63,186	79,995	(46,719)
Operating lease liabilities, net	(28,714)	(28,884)	(22,824)
Net cash provided by operating activities	1,989,048	1,945,308	1,598,836
Cash flows from investing activities:
Purchases of marketable securities	(4,824,598)	(4,622,104)	(4,083,968)
Maturities of marketable securities	4,064,393	3,610,274	3,131,419
Sales of marketable securities	684,371	47,482	1,191
Purchases of property and equipment	(64,961)	(136,560)	(126,953)
Purchases of strategic investments	(98,245)	(18,500)	(70,527)
Proceeds from sale of strategic investments	80,438	13,384	170,067
Cash paid for acquisitions, net of cash acquired	(119,796)	0	(204,918)
Purchases of intangible assets	(500)	0	0
Net cash used in investing activities	(278,898)	(1,106,024)	(1,183,689)
Cash flows from financing activities:
Cash paid for repurchases of common stock, including excise taxes	(1,620,691)	(1,093,878)	0
Proceeds from issuance of common stock for employee stock purchase plan	61,206	54,008	54,097
Proceeds from exercise of stock options	2,482	4,619	10,195
Proceeds from employee equity transactions (remitted) to be remitted to employees and tax authorities, net	(523)	7,174	(4,106)
Taxes paid related to net share settlement of equity awards	(247,832)	0	0
Net cash (used in) provided by financing activities	(1,805,358)	(1,028,077)	60,186
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	17,572	(15,170)	(10,196)
Net (decrease) increase in cash, cash equivalents, and restricted cash	(77,636)	(203,963)	465,137
Cash, cash equivalents, and restricted cash—beginning of year	1,361,417	1,565,380	1,100,243
Cash, cash equivalents, and restricted cash—end of year	1,283,781	1,361,417	1,565,380
Supplemental disclosures of non-cash investing and financing information
Purchase of equipment during the period included in accounts payable and accrued expenses	15,204	20,393	16,206
Excise tax on share repurchases included in accrued expenses	8,648	1,240	0
Reconciliation of cash, cash equivalents, and restricted cash within the consolidated balance sheets to the amounts shown in the consolidated statements of cash flows above:
Cash and cash equivalents	1,272,877	1,349,380	1,558,252
Restricted cash, current included in prepaid expenses and other current assets	10,904	12,037	6,874
Restricted cash, noncurrent included in other assets, noncurrent	0	0	254
Total cash, cash equivalents, and restricted cash	$ 1,283,781	$ 1,361,417	$ 1,565,380