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Equity Compensation (Schedule of Fair Value Market Stock Units Assumptions) (Details)
12 Months Ended
Mar. 30, 2013
Mar. 28, 2015
Mar. 29, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected term 2 years 5 months 16 days    
Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected term   2 years 10 months 13 days 2 years 7 months 10 days
Minimum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected term   2 years 1 month 24 days 2 years 5 months 16 days
Market Stock Unit (MSUs) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected stock price volatility   39.65%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= crus_MarketStockUnitMsusMember
 
Risk-free interest rate   1.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= crus_MarketStockUnitMsusMember
 
Expected term   3 years