Commitments And Contingencies (Loss Contingency Narrative) (Details) (Enterasys, Settled Litigation)	Jun. 21, 2005 patents
Enterasys \| Settled Litigation
Loss Contingencies
Number of alleged patents infringed and seeking injunctive relief	6

Number of patents infringed and seeking injunctive relief.

No definition available.

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Namespace Prefix:	brcd_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant