Revenue (Tables)

9 Months Ended

Jul. 31, 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   July 31,				Nine Months Ended   July 31,
	2021		2020		2021		2020
EDA	55.8	%	55.2	%	56.2	%	57.7	%
IP & System Integration	34.4	%	34.8	%	34.2	%	32.0	%
Software Integrity Products & Services	9.3	%	9.7	%	9.3	%	10.0	%
Other	0.5	%	0.3	%	0.3	%	0.3	%
Total	100.0	%	100.0	%	100.0	%	100.0	%

Schedule of Contract Assets and Liabilities

Contract balances are as follows:

	As of
	July 31, 2021		October 31, 2020
	(in thousands)
Contract assets	$	246,815	$	214,583
Unbilled receivables	$	45,855	$	50,932
Deferred revenue	$	1,646,365	$	1,493,113