The value (monetary amount) of the award the plaintiff seeks in the legal matter.

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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Commitments and Contingencies (Details)	9 Months Ended	12 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
Commitments and Contingencies (Details)	Aug. 28, 2011 Sable [Member] CAD	Dec. 31, 2004 Sable [Member] CAD	Dec. 31, 2004 Minimum [Member] BP America [Member] USD ($)	Aug. 28, 2011 BP America [Member] USD ($)	Aug. 28, 2011 PPC [Member] USD ($)	Aug. 28, 2011 Asbestos-related Cases [Member] USD ($) cases	Aug. 29, 2010 Asbestos-related Cases [Member] USD ($)	Aug. 28, 2011 Asbestos-related Cases [Member] USD ($) cases	Aug. 29, 2010 Asbestos-related Cases [Member] USD ($)	May 29, 2011 Asbestos-related Cases [Member] cases
Loss Contingencies [Line Items]
Claim for damages	135,500,000	440,000,000	$ 20,000,000	$ 12,900,000	$ 20,000,000
Number of pending cases						21		21		20
Number of new cases						6
Number of cases dimissed						5
Number of cases settled						0
Number of judgements						0
Legal expenses						25,000	13,000	540,000	77,000
Legal expenses recovered						$ 0	$ 0	$ 0	$ 28,000