Unaudited Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2022	Jan. 31, 2021
Cash flow from operating activities:
Net income attributed to Synopsys	$ 313,687	$ 162,345
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization and depreciation	61,685	50,628
Reduction of operating lease right-of-use assets	21,010	20,974
Amortization of capitalized costs to obtain revenue contracts	16,737	15,008
Stock-based compensation	95,771	83,782
Allowance for credit losses	5,278	7,477
Deferred income taxes	(11,952)	(20,222)
Other non-cash	4,486	(3,359)
Net changes in operating assets and liabilities, net of acquired assets and liabilities:
Accounts receivable	(466,684)	(14,910)
Inventories	9,155	(37,764)
Prepaid and other current assets	(303)	(12,289)
Other long-term assets	(11,969)	(50,385)
Accounts payable and accrued liabilities	(223,223)	(171,137)
Operating lease liabilities	(19,477)	(20,707)
Income taxes	6,555	12,226
Deferred revenue	354,988	152,291
Net cash provided by operating activities	155,744	173,958
Cash flows from investing activities:
Proceeds from sales and maturities of short-term investments	16,437	0
Purchases of short-term investments	(17,210)	0
Proceeds from sales of long-term investments	582	0
Purchases of long-term investments	(5,000)	0
Purchases of property and equipment	(41,751)	(27,779)
Cash paid for acquisitions, net of cash acquired	(19,989)	(74,670)
Capitalization of software development costs	(494)	(1,011)
Other	(600)	0
Net cash used in investing activities	(68,025)	(103,460)
Cash flows from financing activities:
Repayment of debt	(75,938)	(5,694)
Issuances of common stock	30,835	15,092
Payments for taxes related to net share settlement of equity awards	(96,785)	(49,591)
Purchase of equity forward contract	(40,000)	(50,000)
Purchases of treasury stock	(210,000)	(202,871)
Other	(2,709)	0
Net cash used in financing activities	(394,597)	(293,064)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(1,720)	10,001
Net change in cash, cash equivalents and restricted cash	(308,598)	(212,565)
Cash, cash equivalents and restricted cash, beginning of year	1,435,183	1,237,970
Cash, cash equivalents and restricted cash, end of period	$ 1,126,585	$ 1,025,405