Fair Value Measurements (Details Textual)	Apr. 26, 2013 6.0% Senior Notes due 2016	Oct. 26, 2012 6.0% Senior Notes due 2016	Nov. 01, 2006 6.0% Senior Notes due 2016	Apr. 26, 2013 6.625% Senior Notes due 2036	Oct. 26, 2012 6.625% Senior Notes due 2036	Nov. 01, 2006 6.625% Senior Notes due 2036	Apr. 26, 2013 5.125% Senior Notes due 2021	Oct. 26, 2012 5.125% Senior Notes due 2021	Oct. 12, 2011 5.125% Senior Notes due 2021
Fair Value Measurements (Textual) [Abstract]
Interest rate	6.00%	6.00%	6.00%	6.625%	6.625%	6.625%	5.125%	5.125%	5.125%

Interest rate stated in the contractual debt agreement.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant