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Equity Compensation (Summary of Effect of Stock-Based Compensation on Cost of Goods Sold) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
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Mar. 28, 2015 | Mar. 29, 2014 | Mar. 30, 2013
Effect on pre-tax income | $ 37,549 us-gaap_ShareBasedCompensation | $ 23,074 us-gaap_ShareBasedCompensation | $ 21,495 us-gaap_ShareBasedCompensation
Income tax benefit | (37,692)us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities | (8,445)us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities | (106)us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities
Total share based compensation expense (benefit) (net of taxes) | (143)us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax | 14,629 us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax | 21,389 us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax
Share based compensation effects on basic earnings per share | $ 1.20 crus_ShareBasedCompensationEffectsOnBasicEarningsLossPerShare | $ 0.50 crus_ShareBasedCompensationEffectsOnBasicEarningsLossPerShare | $ 0.33 crus_ShareBasedCompensationEffectsOnBasicEarningsLossPerShare
Share based compensation effects on diluted earnings per share | $ 1.15 crus_ShareBasedCompensationEffectsOnDilutedEarningsLossPerShare | $ 0.48 crus_ShareBasedCompensationEffectsOnDilutedEarningsLossPerShare | $ 0.32 crus_ShareBasedCompensationEffectsOnDilutedEarningsLossPerShare
Share based compensation effects on operating activities cash flow | (143)crus_ShareBasedCompensationEffectsOnOperatingActivitiesCashFlow | 14,629 crus_ShareBasedCompensationEffectsOnOperatingActivitiesCashFlow | 21,389 crus_ShareBasedCompensationEffectsOnOperatingActivitiesCashFlow
Share based compensation effects on financing activities cash flow | 37,692 us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities | 8,445 us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities | 106 us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
Cost of Sales [Member] |  |  |
Effect on pre-tax income | 747 us-gaap_ShareBasedCompensation / us-gaap_IncomeStatementLocationAxis = us-gaap_CostOfSalesMember | 864 us-gaap_ShareBasedCompensation / us-gaap_IncomeStatementLocationAxis = us-gaap_CostOfSalesMember | 751 us-gaap_ShareBasedCompensation / us-gaap_IncomeStatementLocationAxis = us-gaap_CostOfSalesMember
Research and Development [Member] |  |  |
Effect on pre-tax income | 11,222 us-gaap_ShareBasedCompensation / us-gaap_IncomeStatementLocationAxis = us-gaap_ResearchAndDevelopmentExpenseMember | 10,392 us-gaap_ShareBasedCompensation / us-gaap_IncomeStatementLocationAxis = us-gaap_ResearchAndDevelopmentExpenseMember | 10,549 us-gaap_ShareBasedCompensation / us-gaap_IncomeStatementLocationAxis = us-gaap_ResearchAndDevelopmentExpenseMember
Selling, General and Administrative [Member] |  |  |
Effect on pre-tax income | $ 25,580 us-gaap_ShareBasedCompensation / us-gaap_IncomeStatementLocationAxis = us-gaap_SellingGeneralAndAdministrativeExpensesMember | $ 11,818 us-gaap_ShareBasedCompensation / us-gaap_IncomeStatementLocationAxis = us-gaap_SellingGeneralAndAdministrativeExpensesMember | $ 10,195 us-gaap_ShareBasedCompensation / us-gaap_IncomeStatementLocationAxis = us-gaap_SellingGeneralAndAdministrativeExpensesMember

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- Definition Share Based Compensation Effects On Basic Earnings (Loss) Per Share + References No definition available. + Details
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- Definition Share Based Compensation Effects On Diluted Earnings (Loss) Per Share + References No definition available. + Details
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- Definition The net effect of share based compensation expense on the operating section of the cash flow statement + References No definition available. + Details
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- Definition The amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References No definition available. + Details
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- Definition Amount of cash inflow from realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 20 -Section 55 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=32706628&loc=d3e11374-113907 + Details
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- Definition Amount of cash outflow for realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 20 -Section 55 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=32706628&loc=d3e11374-113907 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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