| Document and Entity Information | Dec. 12, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Dec. 12, 2024 |
| Entity Registrant Name | CADENCE DESIGN SYSTEMS, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 000-15867 |
| Entity Tax Identification Number | 00-0000000 |
| Entity Address, Address Line One | 2655 Seely Avenue, |
| Entity Address, City or Town | San Jose, |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 95134 |
| City Area Code | (408) |
| Local Phone Number | 943-1234 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.01 par value per share |
| Trading Symbol | CDNS |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0000813672 |
| Amendment Flag | false |
