Revenue (Tables)

6 Months Ended

Apr. 30, 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   April 30,				Six Months Ended   April 30,
	2020		2019		2020		2019
EDA	60	%	58	%	60	%	59	%
IP & System Integration	30	%	31	%	30	%	30	%
Software Integrity Products & Services	10	%	10	%	10	%	10	%
Other	—	%	1	%	—	%	1	%
Total	100	%	100	%	100	%	100	%

Schedule of Contract Assets and Liabilities

Contract balances are as follows:

	As of
	April 30, 2020		October 31, 2019
	(in thousands)
Contract assets	$	193,651	$	210,557
Unbilled receivables	$	40,827	$	38,175
Deferred revenue	$	1,521,664	$	1,302,578