XML 38 R67.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Legal Matters (Details) | 12 Months Ended
--- | ---
Mar. 30, 2013 item defendant
Legal Matters [Abstract] |
Number of U.S.Ethernet Innovations lawsuit co-defendants | 2
Number of patents allegedly infringed upon | 4

X
- Definition Number of co-defendants in a lawsuit + References No definition available. + Details
Name: | crus_LossContingencyNumberofCoDefendants
Namespace Prefix: | crus_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of another entity's patents that the entity has allegedly infringed. + References No definition available. + Details
Name: | crus_LossContingencyPatentsAllegedlyInfringedNumber
Namespace Prefix: | crus_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_LossContingencyInformationAboutLitigationMattersAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration