Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 756,359	$ 663,447	$ 532,367
Other comprehensive income (loss):
Change in foreign currency translation adjustment	9,415	30,466	1,360
Change in unrealized gains (losses) on available-for-sale securities, net of tax of $0 for periods presented	(246)	0	0
Cash flow hedges:
Deferred gains (losses), net of tax of $(1,736), $(3,192), and $(2,009) for fiscal years 2021, 2020 and 2019, respectively	9,860	7,834	4,733
Reclassification adjustment on deferred (gains) losses included in net income, net of tax of $4,593, $176, and $(3,672) for fiscal years 2021, 2020 and 2019, respectively	(14,559)	73	14,637
Other comprehensive income (loss), net of tax effects	4,470	38,373	20,730
Comprehensive income	760,829	701,820	553,097
Less: Net income (loss) attributed to non-controlling interest	(1,157)	(900)	0
Comprehensive income attributed to Synopsys	$ 761,986	$ 702,720	$ 553,097