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Debt Credit Facility (Details Textual) $ in Millions | 12 Months Ended
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Jan. 02, 2021 USD ($)
Revolving Credit Facility [Member] |
Line of Credit Facility [Line Items] |
Credit facility, current borrowing capacity | $ 350.0
Credit facility, additional borrowing capacity available | 250.0
Credit facility, maximum borrowing capacity | $ 600.0
Credit facility, maturity date | Jan. 28, 2022
Minimum [Member] | Revolving Credit Facility [Member] |
Line of Credit Facility [Line Items] |
Credit facility, commitment fee percentage | 0.15%
Maximum [Member] | Revolving Credit Facility [Member] |
Line of Credit Facility [Line Items] |
Credit facility, commitment fee percentage | 0.30%
Revolving Credit Facility [Member] |
Line of Credit Facility [Line Items] |
Credit facility, covenant, debit to EBITDA ratio | 3.00
Credit facility, covenant, debt to EBITDA ratio after step up triggered by acquisition | 3.50
Credit facility, covenant, required business acquisition consideration, minimum | $ 250.0
Revolving Credit Facility [Member] | Minimum [Member] |
Line of Credit Facility [Line Items] |
Credit facility, covenant, leverage ratio | 2.75
Revolving Credit Facility [Member] | Maximum [Member] |
Line of Credit Facility [Line Items] |
Credit facility, covenant, leverage ratio | 3.25
London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] | Revolving Credit Facility [Member] |
Line of Credit Facility [Line Items] |
Credit facility, interest rate spread | 1.25%
London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] | Revolving Credit Facility [Member] |
Line of Credit Facility [Line Items] |
Credit facility, interest rate spread | 1.875%
Base Rate [Member] | Minimum [Member] | Revolving Credit Facility [Member] |
Line of Credit Facility [Line Items] |
Credit facility, interest rate spread | 0.25%
Base Rate [Member] | Maximum [Member] | Revolving Credit Facility [Member] |
Line of Credit Facility [Line Items] |
Credit facility, interest rate spread | 0.875%

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- Definition Debt Instrument, Covenant, Debt to EBITDA Ratio + References No definition available. + Details
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- Definition Debt Instrument, Covenant, Debt to EBITDA Ratio after step up triggered by acquisition + References No definition available. + Details
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- Definition Debt Instrument, Covenant, Pro Forma Leverage Ratio + References No definition available. + Details
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- Definition Debt Instrument, Covenant, Required Business Acquisition Consideration, Minimum + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition Line Of Credit Facility, Additional Borrowing Capacity Available + References No definition available. + Details
Name: | cdns_LineOfCreditFacilityAdditionalBorrowingCapacityAvailable
Namespace Prefix: | cdns_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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Balance Type: | credit
Period Type: | instant

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- Definition Date the credit facility terminates, in CCYY-MM-DD format. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
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- Details
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