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Postretirement Benefit Plans (Schedule of Fair Value of Financial Instruments - Pension) (Details) (USD $) In Thousands, unless otherwise specified | Mar. 28, 2015
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Defined Benefit Plan Disclosure [Line Items] |
Assets, Fair Value Disclosure | $ 26,735 us-gaap_AssetsFairValueDisclosure
Cash And Cash Equivalents [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Assets, Fair Value Disclosure | 1,160 us-gaap_AssetsFairValueDisclosure / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_CashAndCashEquivalentsMember
Pension Funds [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Assets, Fair Value Disclosure | 25,575 us-gaap_AssetsFairValueDisclosure / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = crus_PensionFundsMember
Quoted Prices in Active Markets for Identical Assets Level 1 [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Assets, Fair Value Disclosure | 1,160 us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member
Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | Cash And Cash Equivalents [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Assets, Fair Value Disclosure | 1,160 us-gaap_AssetsFairValueDisclosure / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_CashAndCashEquivalentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member
Significant Other Observable Inputs Level 2 [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Assets, Fair Value Disclosure | 25,575 us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member
Significant Other Observable Inputs Level 2 [Member] | Pension Funds [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Assets, Fair Value Disclosure | $ 25,575 us-gaap_AssetsFairValueDisclosure / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = crus_PensionFundsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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