CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jul. 31, 2022	Jul. 31, 2021
Cash flows from operating activities:
Net income	$ 159,408	$ 544,615
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation expense	464,878	201,111
Amortization of deferred contract acquisition costs	119,502	79,392
Losses (gains) on strategic investments, net	71,116
(Losses) gains on strategic investments, net		(32,076)
Depreciation and amortization	36,155	22,691
Provision for accounts receivable allowances	26,727	14,592
Non-cash operating lease cost	11,067	8,633
Amortization on marketable securities	4,821	12,637
Other	19,305	264
Changes in operating assets and liabilities:
Accounts receivable	(125,898)	(117,259)
Prepaid expenses and other assets	(136,619)	(57,370)
Deferred contract acquisition costs	(157,005)	(102,597)
Accounts payable	16,441	43,960
Accrued expenses and other liabilities	64,262	93,809
Deferred revenue	220,550	296,636
Operating lease liabilities, net	(11,350)	(7,724)
Net cash provided by operating activities	783,360	1,001,314
Cash flows from investing activities:
Purchases of marketable securities	(1,576,853)	(2,094,587)
Maturities of marketable securities	1,306,676	791,906
Sales of marketable securities	0	119,569
Purchases of property and equipment	(52,870)	(92,049)
Purchases of strategic investments	(61,550)	(86,900)
Cash paid for acquisition, net of cash acquired	(120,553)	(2,121)
Purchases of intangible assets	(3,211)	0
Net cash used in investing activities	(508,361)	(1,364,182)
Cash flows from financing activities:
Cash paid for repurchases of common stock	(425,946)	0
Proceeds from issuance of common stock for employee stock purchase plan	34,605	37,846
Proceeds from employee equity transactions (remitted) to be remitted to employees and tax authorities, net	(2,545)	18,900
Proceeds from exercise of stock options	5,065	8,021
Other	0	337
Net cash (used in) provided by financing activities	(388,821)	65,104
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	(16,111)	0
Net decrease in cash, cash equivalents, and restricted cash	(129,933)	(297,764)
Cash, cash equivalents, and restricted cash – beginning of period	1,073,353	2,293,116
Cash, cash equivalents, and restricted cash – end of period	943,420	1,995,352
Reconciliation of cash, cash equivalents, and restricted cash within the condensed consolidated balance sheets to the amounts shown in the condensed consolidated statements of cash flows above:
Cash and cash equivalents	937,443	1,931,370
Restricted cash, current included in prepaid expenses and other current assets	5,708	63,185
Restricted cash, noncurrent included in other assets, noncurrent	269	797
Total cash, cash equivalents, and restricted cash	$ 943,420	$ 1,995,352