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Equity Compensation (Summary of Market Stock Unit Activity) (Details) (Market Stock Unit (MSUs) [Member], USD $)
In Thousands, except Per Share data, unless otherwise specified
12 Months Ended
Mar. 28, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of Shares, Granted 35us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Number of Shares, Balance 35us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Weighted Average Grant Date Fair Value (per share), Granted $ 22.00us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Weighted Average Grant Date Fair Value (per share), Ending Balance $ 22.00us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
Weighted Average Estimated Fair Value Using Monte Carlo Simulation Model [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Weighted Average Grant Date Fair Value (per share), Granted $ 22.00us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= crus_MarketStockUnitMsusMember
/ crus_ValuationModelAxis
= crus_WeightedAverageEstimatedFairValueUsingMonteCarloSimulationModelMember