Restructuring (Narrative) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 26, 2013	Apr. 27, 2012	Apr. 26, 2013	Apr. 27, 2012
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 9,320	$ 9,515
2011 Restructuring Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges after tax		3,293		6,817
Restructuring charges per share after tax		$ 0.04		$ 0.07
2013 Restructuring Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges after tax	6,415		6,415
Restructuring charges per share after tax	$ 0.07		$ 0.07
Restructuring charges per share after tax, incurred and forecasted	$ 0.22		$ 0.22
2013 Restructuring Initiatives [Member] | Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges, incurred and forecasted	18,000		18,000
2013 Restructuring Initiatives [Member] | Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges, incurred and forecasted	23,000		23,000
Cost Of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	6,669	1,706	6,669	4,660
Research And Development Expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	241		241
Selling, General And Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 2,410	$ 2,712	$ 2,410	$ 4,855