Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Revenue:
Total revenue	$ 3,685,281	$ 3,360,694	$ 3,121,058
Cost of revenue:
Amortization of intangible assets	52,452	59,623	84,034
Total cost of revenue	794,690	752,946	735,898
Gross margin	2,890,591	2,607,748	2,385,160
Operating expenses:
Research and development	1,279,022	1,136,932	1,084,822
Sales and marketing	632,010	632,890	622,978
General and administrative	284,530	229,218	262,560
Amortization of intangible assets	38,829	41,291	41,630
Restructuring charges	36,059	47,186	12,945
Total operating expenses	2,270,450	2,087,517	2,024,935
Operating income	620,141	520,231	360,225
Other income (expense), net	18,018	25,275	3,318
Income before income taxes	638,159	545,506	363,543
Provision (benefit) for income taxes	(25,288)	13,139	(68,975)
Net income	663,447	532,367	432,518
Net income (loss) attributed to non-controlling interest	(900)	0	0
Net income attributed to Synopsys	$ 664,347	$ 532,367	$ 432,518
Net income per share:
Basic (in USD per share)	$ 4.40	$ 3.55	$ 2.90
Diluted (in USD per share)	$ 4.27	$ 3.45	$ 2.82
Shares used in computing per share amounts:
Basic (shares)	151,135	149,872	149,036
Diluted (shares)	155,706	154,190	153,393
Time-based products
Revenue:
Total revenue	$ 2,365,199	$ 2,197,965	$ 2,303,317
Cost of revenue:
Cost of revenue	487,307	459,127	448,430
Upfront products
Revenue:
Total revenue	735,572	619,791	357,698
Maintenance and service
Revenue:
Total revenue	584,510	542,938	460,043
Cost of revenue:
Cost of revenue	$ 254,931	$ 234,196	$ 203,434