Revenue (Tables)

9 Months Ended

Jul. 31, 2020

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue

The following table shows the percentage of revenue by product groups:

	Three Months Ended   July 31,				Nine Months Ended   July 31,
	2020		2019		2020		2019
EDA	55	%	57	%	58	%	59	%
IP & System Integration	35	%	33	%	32	%	31	%
Software Integrity Products & Services	10	%	10	%	10	%	10	%
Other	0	%	0	%	0	%	0	%
Total	100	%	100	%	100	%	100	%

Schedule of Contract Assets and Liabilities

Contract balances are as follows:

	As of
	July 31, 2020		October 31, 2019
	(in thousands)
Contract assets	$	216,516	$	210,557
Unbilled receivables	$	53,028	$	38,175
Deferred revenue	$	1,501,524	$	1,302,578