Revenue (Tables)

6 Months Ended

Apr. 30, 2021

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,
	2021		2020		2021		2020
EDA	57.4	%	59.4	%	56.3	%	59.2	%
IP & System Integration	33.1	%	30.2	%	34.0	%	30.4	%
Software Integrity Products & Services	9.2	%	10.2	%	9.3	%	10.3	%
Other	0.3	%	0.2	%	0.4	%	0.1	%
Total	100.0	%	100.0	%	100.0	%	100.0	%

Schedule of Contract Assets and Liabilities

Contract balances are as follows:

	As of
	April 30, 2021		October 31, 2020
	(in thousands)
Contract assets	$	242,929	$	214,583
Unbilled receivables	$	48,487	$	50,932
Deferred revenue	$	1,680,311	$	1,493,113