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Subsequent Events	12 Months Ended
Subsequent Events	Dec. 29, 2018
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTS Non-Marketable investments In January 2019, Cadence made an additional minority equity investment in a private company for approximately $34 million, bringing Cadence’s total investment to approximately $149 million. For additional information regarding Cadence’s investments, see Note 7 to the consolidated financial statements. Stock Repurchase Authorization In February 2019, Cadence’s Board of Directors authorized the additional repurchase of shares of Cadence’s common stock with a value of up to $500 million in the aggregate. The actual timing and amount of future repurchases are subject to business and market conditions, corporate and regulatory requirements, stock price, acquisition opportunities and other factors.