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Revenue (Tables) | 12 Months Ended
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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 |

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045 + Details
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