CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2022	Jan. 31, 2023
Cash flows from operating activities:
Net loss	$ (111,000)	$ (210,000)	$ (230,000)	$ (453,000)
Adjustments to reconcile net loss to net cash provided by operating activities:
Stock-based compensation			351,000	341,000
Depreciation, amortization and accretion			43,000	61,000
Amortization of debt issuance costs			2,000	2,000
Amortization of deferred commissions			49,000	39,000
Deferred income taxes			3,000	2,000
Lease impairment charges			25,000	0
Gain on early extinguishment of debt	(42,000)	0	(73,000)	0
Net gain on strategic investments			0	(2,000)
Other, net			4,000	2,000
Changes in operating assets and liabilities:
Accounts receivable			92,000	74,000
Deferred commissions			(65,000)	(50,000)
Prepaid expenses and other assets			(14,000)	(2,000)
Operating lease right-of-use assets			12,000	14,000
Accounts payable			1,000	24,000
Accrued compensation			24,000	(55,000)
Accrued expenses and other liabilities			(4,000)	1,000
Operating lease liabilities			(20,000)	(13,000)
Deferred revenue			(18,000)	15,000
Net cash provided by operating activities			182,000	0
Cash flows from investing activities:
Capitalized software			(7,000)	(6,000)
Purchases of property and equipment			(2,000)	(7,000)
Purchases of securities available-for-sale and other			(577,000)	(571,000)
Proceeds from maturities and redemption of securities available-for-sale			1,101,000	521,000
Proceeds from sales of securities available-for-sale and other			61,000	0
Purchases of intangible assets			0	(2,000)
Payments for business acquisitions, net of cash acquired			(22,000)	(4,000)
Net cash provided by (used in) investing activities			554,000	(69,000)
Cash flows from financing activities:
Payments for repurchases of convertible senior notes			(671,000)	0
Payments for warrants related to convertible senior notes	(4,000)		(4,000)	0
Proceeds from stock option exercises, net of repurchases			8,000	9,000
Proceeds from shares issued in connection with employee stock purchase plan			26,000	19,000
Net cash provided by (used in) financing activities			(641,000)	28,000
Effects of changes in foreign currency exchange rates on cash, cash equivalents and restricted cash			2,000	(6,000)
Net increase (decrease) in cash, cash equivalents and restricted cash			97,000	(47,000)
Cash, cash equivalents and restricted cash at beginning of period			271,000	273,000	$ 273,000
Cash, cash equivalents and restricted cash at end of period	368,000	226,000	368,000	226,000	271,000
Cash paid during the period for:
Cash payments included in the measurement of operating lease liabilities			24,000	18,000
Non-cash activities:
Issuance of common stock for conversions of convertible senior notes			0	40,000
Benefit from exercise of hedges related to convertible senior notes			2,000	18,000
Operating lease right-of-use assets exchanged for lease liabilities			5,000	8,000
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	356,000	216,000	356,000	216,000	264,000
Restricted cash, current included in prepaid expenses and other current assets	5,000	2,000	5,000	2,000
Restricted cash, noncurrent included in other assets	7,000	8,000	7,000	8,000
Total cash, cash equivalents and restricted cash	$ 368,000	$ 226,000	$ 368,000	$ 226,000	$ 271,000