Unaudited Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
Jan. 31, 2020	Jan. 31, 2019
Cash flow from operating activities:
Net income (loss)	$ 104,061	$ 153,514
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization and depreciation	52,232	51,830
Reduction of operating lease right-of-use assets	23,201	0
Amortization of capitalized costs to obtain revenue contracts	13,762	12,793
Stock-based compensation	51,883	38,460
Allowance for doubtful accounts	4,861	1,500
Deferred income taxes	(17,694)	(6,215)
Net changes in operating assets and liabilities, net of acquired assets and liabilities:
Accounts receivable	(246,364)	(209,049)
Inventories	(5,302)	(15,827)
Prepaid and other current assets	8,697	(10,027)
Other long-term assets	(27,732)	(49,403)
Accounts payable and accrued liabilities	(132,814)	(219,099)
Operating lease liabilities	(20,979)	0
Income taxes	5,039	(41,985)
Deferred revenue	196,969	149,489
Net cash provided by operating activities	9,820	(144,019)
Cash flows from investing activities:
Purchases of long-term investments	2,500	0
Purchases of property and equipment	(54,605)	(29,007)
Cash paid for acquisitions and intangible assets, net of cash acquired	(75,388)	0
Capitalization of software development costs	(1,065)	(737)
Net cash used in investing activities	(133,558)	(29,744)
Cash flows from financing activities:
Proceeds from credit facilities	196,490	185,080
Repayment of debt	(3,750)	(112,812)
Issuances of common stock	14,982	6,358
Payments for taxes related to net share settlement of equity awards	(14,242)	(10,593)
Purchase of equity forward contract	(20,000)	0
Purchases of treasury stock	(80,000)	(29,185)
Other	0	(762)
Net cash (used in) provided by financing activities	93,480	38,086
Effect of exchange rate changes on cash, cash equivalents and restricted cash	2,013	4,882
Net change in cash, cash equivalents and restricted cash	(28,245)	(130,795)
Cash, cash equivalents and restricted cash, beginning of period	730,527	725,001
Cash, cash equivalents and restricted cash, end of period	$ 702,282	$ 594,206

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