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v3.19.3

Revenue (Details) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 28, 2019 | Sep. 29, 2018 | Sep. 28, 2019 | Sep. 29, 2018
Revenue from External Customer [Line Items] |  |  |  |  |  |
Percentage of product and maintenance revenue by product group | 100.00% |  | 100.00% | 100.00% |  | 100.00%
Functional Verification, including Emulation and Prototyping Hardware [Member] |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |
Percentage of product and maintenance revenue by product group | 20.00% | [1] | 22.00% | 22.00% | [1] | 24.00%
Digital IC Design and Signoff [Member] |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |
Percentage of product and maintenance revenue by product group | 30.00% |  | 30.00% | 30.00% |  | 29.00%
Custom IC Design and Simulation [Member] |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |
Percentage of product and maintenance revenue by product group | 26.00% |  | 26.00% | 26.00% |  | 26.00%
System Interconnect and Analysis [Member] |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |
Percentage of product and maintenance revenue by product group | 9.00% |  | 9.00% | 9.00% |  | 9.00%
IP [Member] |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |
Percentage of product and maintenance revenue by product group | 15.00% |  | 13.00% | 13.00% |  | 12.00%
[1] | 1 Includes immaterial amount of revenue accounted for under Topic 842.

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