Commitments, Contingencies and Off-Balance-Sheet Risks (Narrative) (Details) (USD $) In Millions, unless otherwise specified	Oct. 25, 2013
Commitments And Contingencies Disclosure [Line Items]
Contingent liability	$ 210.7
Surety Bond
Commitments And Contingencies Disclosure [Line Items]
Contingent liability	11.3
Other Guarantees
Commitments And Contingencies Disclosure [Line Items]
Contingent liability	$ 4.2
Damages from Product Defects
Commitments And Contingencies Disclosure [Line Items]
Number of unresolved asbestos and silica related product liability cases	2,900

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (b)(1)

-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

Name:	us-gaap_GuaranteeObligationsMaximumExposure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant