Note 4 Effect of Nonperformance Risk on the Fair Value of Derivative Instruments (Details)	12 Months Ended
Sep. 29, 2012	Oct. 01, 2011
Effect of Nonperformance Risk on the Fair Value of Derivative Instruments [Line Items]
Derivative, Credit Risk	not material	not material

Describes the risk that a counterparty to the derivative instrument will not perform.

No definition available.

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