Commitments, Contingencies and Off-Balance-Sheet Risks (Narrative) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Oct. 26, 2012
Commitments And Contingencies Disclosure [Line Items]
Number of unresolved asbestos and silica related product liability cases	2500
Contingent liability for outstanding letters of credit, bank guarantees, and surety bonds	$ 303.6
Contingent liability substantially attributable to workers compensation obligations	1.5
Contingent liability related to outstanding letters of credit or other guarantees	$ 9.7