Unaudited Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2022	Apr. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 293,892	$ 194,802	$ 607,233	$ 356,830
Other comprehensive income (loss):
Change in foreign currency translation adjustment	(39,999)	(3,171)	(40,612)	14,762
Changes in unrealized gains (losses) on available-for-sale securities, net of tax of $0 for periods presented	(1,173)	0	(1,673)	0
Cash flow hedges:
Deferred gains (losses), net of tax $9,181 and $9,411, for the three and six months ended April 30, 2022, respectively, and of $438 and $(967) for each of the same periods in fiscal 2021, respectively.	(21,132)	1,214	(22,717)	5,307
Reclassification adjustment on deferred (gains) losses included in net income, net of tax of $(170) and $(472), for the three and six months ended April 30, 2022, respectively, and of $1,463 and $2,348 for each of the same periods in fiscal 2021, respectively.	662	(4,623)	1,507	(7,350)
Other comprehensive income (loss), net of tax effects	(61,642)	(6,580)	(63,495)	12,719
Comprehensive income	232,250	188,222	543,738	369,549
Less: net income (loss) attributed to non-controlling interest and redeemable non-controlling interest	(889)	(276)	(1,235)	(593)
Comprehensive income attributed to Synopsys	$ 233,139	$ 188,498	$ 544,973	$ 370,142