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Equity Compensation (Summary of Market Stock Units Expected to Vest) (Details) - Market Stock Unit (MSUs) [Member] shares in Thousands | 12 Months Ended
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Mar. 26, 2016 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Shares, Vested and expected to vest | shares | 113
Weighted Average Fair Value, Vested and expected to vest | $ | $ 34.68
Weighted Average Remaining Contractual Term, Vested and expected to vest | 2 years 3 months 15 days

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- Definition As of the balance sheet date, the number of shares into which fully vested and expected to vest restricted stock units outstanding can be converted under the plan. + References No definition available. + Details
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Balance Type: | na
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- Definition As of the balance sheet date, the weighted-average fair value for restricted stock units that are fully vested or expected to vest. + References No definition available. + Details
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Namespace Prefix: | crus_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Weighted average remaining contractual term for fully vested and expected to vest restricted stock units, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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Namespace Prefix: | crus_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |