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Revenue (Tables) | 6 Months Ended
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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 |

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- Definition Tabular disclosure of contract balances and changes in contract balances. + 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=118956577&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=118956577&loc=SL49130545-203045 + Details
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