CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands		9 Months Ended
		Apr. 30, 2022	Apr. 30, 2021
Cash flows from operating activities:
Net loss		$ (646,548)	$ (676,078)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization		67,123	70,609
Stock-based compensation		263,098	268,938
Change in fair value of derivative liability		198,038	81,353
Loss on debt extinguishment		64,910	0
Amortization of debt discount and issuance costs		29,929	46,178
Operating lease cost, net of accretion		27,496	25,818
Impairment of lease-related assets		0	2,822
Non-cash interest expense		14,408	11,331
Other		7,181	7,025
Changes in operating assets and liabilities:
Accounts receivable, net		4,193	102,029
Deferred commissions		(10,377)	(94,034)
Prepaid expenses and other assets		(31,723)	(4,375)
Accounts payable		4,159	542
Accrued compensation and benefits		(46,379)	17,523
Accrued expenses and other liabilities		4,509	4,039
Operating leases, net		(35,743)	(26,864)
Deferred revenue		115,265	87,964
Net cash (used in) provided by operating activities		29,539	(75,180)
Cash flows from investing activities:
Maturities of investments		778,914	486,640
Purchases of investments		(794,180)	(1,145,335)
Sales of investments		17,999	70,055
Purchases of property and equipment		(34,279)	(41,111)
Net cash used in investing activities		(31,546)	(629,751)
Cash flows from financing activities:
Payments of debt extinguishment costs		(14,709)	0
Proceeds from unwinding of convertible note hedges		39,880	0
Payments for unwinding of warrants		(18,390)	0
Proceeds from sales of shares through employee equity incentive plans		66,644	62,343
Proceeds from the issuance of convertible notes, net of issuance costs		88,687	723,617
Repurchases of common stock		(58,570)	(125,079)
Payment of finance lease obligations		(626)	0
Net cash provided by financing activities		102,916	660,881
Net (decrease) increase in cash, cash equivalents and restricted cash		100,909	(44,050)
Cash, cash equivalents and restricted cash—beginning of period		288,873	321,991
Cash, cash equivalents and restricted cash—end of period		389,782	277,941
Restricted cash	[1]	3,061	3,265
Cash and cash equivalents—end of period		386,721	274,676
Supplemental disclosures of cash flow information:
Cash paid for income taxes		17,101	13,220
Supplemental disclosures of non-cash investing and financing information:
Purchases of property and equipment included in accounts payable and accrued and other liabilities		20,026	12,583
Finance lease liabilities arising from obtaining right-of-use assets		$ 11,159	$ 5,769

[1] Included within other assets—non-current in the condensed consolidated balance sheets.