XML 115 R100.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Commitments and Contingencies (Details Textual) $ in Millions | 12 Months Ended
--- | ---
Dec. 29, 2018 USD ($)
Commitments and Contingencies Disclosure [Abstract] |
Purchase obligations | $ 24.7
General period of warranty on sales of hardware products | 90 days

X
- Definition General period of warranty on sales of hardware products. + References No definition available. + Details
Name: | cdns_GeneralPeriodOfWarrantyOnSalesOfHardwareProducts
Namespace Prefix: | cdns_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier. + References No definition available. + Details
Name: | us-gaap_PurchaseObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant