Restructuring (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended							12 Months Ended	3 Months Ended
	Jan. 24, 2014	Jan. 25, 2013	Jan. 24, 2014 Cost Of Sales [Member]	Jan. 25, 2013 Cost Of Sales [Member]	Jan. 24, 2014 Selling, General And Administrative Expenses [Member]	Jan. 25, 2013 Selling, General And Administrative Expenses [Member]	Jan. 25, 2013 2013 Restructuring Initiatives [Member]	Oct. 25, 2013 2013 Restructuring Initiatives [Member]	Jan. 24, 2014 2013 And 2014 Restructuring Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 11,806	$ 0	$ 6,106	$ 0	$ 5,700	$ 0	$ 0	$ 36,433	$ 11,806
Pre-tax asset impairment charges	$ 5,265