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Revolving Line of Credit (Narrative) (Details) (USD $)	12 Months Ended
	Mar. 29, 2014
Line of Credit [Abstract]
Borrowing limit under the revolving credit facility	$ 100,000,000
Revolving credit sublimit	15,000,000
Basis spread on variable interest rate	0.50%
Covenant Terms, Leverage Ratio Requirement	175.00%
Covenant Terms, Interest Coverage Ratio	350.00%
Line of Credit Facility, Amount Outstanding	0
Line of Credit Facility, Increase (Decrease), Net	$ 0

X

- Definition

Interest Coverage Ratio Requirement for revolving line of credit.

+ References

No definition available.

+ Details

Name:	crus_LineOfCreditFacilityCovenentTermsInterestCoverageRatioRequirement
Namespace Prefix:	crus_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The Leverage Ratio Requirement for revolving line of credit.

+ References

No definition available.

+ Details

Name:	crus_LineOfCreditFacilityCovenentTermsLeverageRatioRequirement
Namespace Prefix:	crus_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The revolving line of credit sublimit.

+ References

No definition available.

+ Details

Name:	crus_Lineofcreditfacilitysublimit
Namespace Prefix:	crus_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_LineOfCreditFacilityAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount borrowed under the credit facility as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityAmountOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of increase (decrease) of the credit facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(f))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph f

-Article 4

+ Details

Name:	us-gaap_LineOfCreditFacilityIncreaseDecreaseForPeriodNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant