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	$ 309,085	$ 1,067,885	$ 73,980
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	116,081	107,804	95,062
Amortization of deferred contract acquisition and fulfillment costs	271,067	237,217	200,163
Amortization of debt discount and transaction costs	775	554	4,749
Non-cash operating lease costs	18,903	19,065	21,310
Stock-based compensation expense	622,321	610,335	616,847
Deferred income taxes	4,713	(839,989)	6,292
Other	2,958	6,111	(1,904)
Changes in operating assets and liabilities
Accounts receivable	(91,742)	2,075	71,681
Prepaid expenses and other current assets	(15,200)	(17,634)	(657)
Deferred contract acquisition and fulfillment costs	(271,544)	(302,166)	(255,159)
Other assets	(1,941)	(22,002)	(15,432)
Accounts payable	(15,148)	7,638	(4,826)
Accrued expenses and other liabilities	26,257	2,935	6,473
Accrued compensation	29,515	29,236	33,979
Contract liabilities	177,203	129,854	152,247
Operating lease liabilities	(18,296)	(21,646)	(25,279)
Net cash provided by operating activities	1,165,007	1,017,272	979,526
Cash flows from investing activities:
Cash paid for acquisition, net of acquired cash	0	(143,611)	0
Purchases of marketable securities	(409,599)	(411,236)	(336,221)
Maturities of marketable securities	389,989	340,334	473,869
Purchases of strategic and other investments	(726)	(1,375)	(645)
Purchases of property and equipment	(106,445)	(96,988)	(92,391)
Net cash provided by (used in) investing activities	(126,781)	(312,876)	44,612
Cash flows from financing activities:
Repayments of convertible senior notes	0	0	(726,979)
Payment of revolving credit facility costs	(3,133)	0	0
Repurchases of common stock	(869,086)	(683,528)	(145,515)
Settlement of capped calls, net of related costs	0	0	23,688
Payment of tax withholding obligation on net RSU settlement and ESPP purchase	(269,713)	(213,282)	(144,218)
Proceeds from exercise of stock options	1,250	22,705	13,991
Proceeds from employee stock purchase plan	40,780	35,314	32,994
Net cash used in financing activities	(1,099,902)	(838,791)	(946,039)
Effect of foreign exchange on cash, cash equivalents and restricted cash	20,272	(7,550)	199
Net increase (decrease) in cash, cash equivalents and restricted cash	(41,404)	(141,945)	78,298
Cash, cash equivalents and restricted cash at beginning of period	659,554	801,499	723,201
Cash, cash equivalents and restricted cash at end of period	618,150	659,554	801,499
Supplemental disclosure:
Cash paid for interest	0	0	185
Cash paid for operating lease liabilities	27,361	26,500	34,845
Cash paid for income taxes	12,946	24,324	10,460
Non-cash investing and financing activities:
Property and equipment in accounts payable and accrued expenses and other current liabilities	3,302	5,687	2,879
Operating lease right-of-use assets exchanged for lease obligations	74,072	5,586	3,149
Excise tax payable on net stock repurchase	3,234	1,461	0
Repurchases of common stock in accrued expenses and other current liabilities	$ 4,001	$ 0	$ 0