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Acquisition (Schedule of IPR&D Acquired Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Mar. 28, 2015
152 Nanometer [Member] |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | $ 8,905 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = crus_Nanometer152Member
Approximate Costs to Complete | 862 crus_ApproximateCostsToComplete / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = crus_Nanometer152Member
Estimated Cost Completion Date (calendar year) | 2015
55/65 Nanometer [Member] |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | 36,807 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = crus_Nanometer5565Member
Approximate Costs to Complete | 17,350 crus_ApproximateCostsToComplete / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = crus_Nanometer5565Member
Estimated Cost Completion Date (calendar year) | 2019
MEMS [Member] |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | 15,596 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = crus_MemsMember
Approximate Costs to Complete | 604 crus_ApproximateCostsToComplete / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = crus_MemsMember
Estimated Cost Completion Date (calendar year) | 2015
Integrated MEMS [Member] |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | 11,442 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = crus_IntegratedMemsMember
Approximate Costs to Complete | 2,784 crus_ApproximateCostsToComplete / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = crus_IntegratedMemsMember
Estimated Cost Completion Date (calendar year) | 2016
In Process Research and Development [Member] |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | 72,750 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_InProcessResearchAndDevelopmentMember
Approximate Costs to Complete | $ 21,600 crus_ApproximateCostsToComplete / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_InProcessResearchAndDevelopmentMember

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- Definition Estimated costs to complete each category of acquired intangibles via the Wolfson acquisition in IPR&D + References No definition available. + Details
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- Definition Estimated cost completion date by calendar year of categories of acquired intangibles via the Wolfson acquisition in IPR&D + References No definition available. + Details
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- Definition The amount of identifiable intangible assets recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=25498275&loc=d3e2207-128464 + Details
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