Revenue (Tables)

12 Months Ended

Oct. 31, 2020

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

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

	2020		2019		2018
EDA	57	%	59	%	62	%
IP & System Integration	33	%	31	%	29	%
Software Integrity Products & Services	10	%	10	%	9	%
Other(1)	0	%	0	%	0	%
Total	100	%	100	%	100	%

⁽¹⁾ 

The percentage of revenue by Other is less than 1%.

Contract with Customer, Asset and Liability

Contract balances are as follows:

	As of October 31,
	2020		2019
	(in thousands)
Contract assets	$	214,583	$	210,557
Unbilled receivables	$	50,932	$	38,175
Deferred revenue	$	1,493,113	$	1,302,578