Unaudited Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 162,345	$ 104,061
Other comprehensive income (loss):
Change in foreign currency translation adjustment	17,932	6,962
Cash flow hedges:
Deferred gains (losses), net of tax of $(1,405) and $(417), respectively.	4,093	1,652
Reclassification adjustment on deferred (gains) losses included in net income, net of tax of $885 and $(97), respectively.	(2,726)	522
Other comprehensive income (loss), net of tax effects	19,299	9,136
Comprehensive income	181,327	113,197
Less: net income (loss) attributed to non-controlling interest	(317)	0
Comprehensive income attributed to Synopsys	181,644	113,197
Net income	$ 162,028	$ 104,061