Restructuring (Narrative) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		12 Months Ended
	Jan. 27, 2012	Jan. 28, 2011	Oct. 28, 2011
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 5,097	$ 1,396
Restructuring charges per share after tax	$ 0.04		$ 0.24
Cost Of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,954	1,396
Selling, General And Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,143
2008 Restructuring Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	1,396
2011 Restructuring Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 5,097
Restructuring charges per share after tax	$ 0.04
2011 Restructuring Initiatives [Member] | Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges per share after tax	$ 0.35
2011 Restructuring Initiatives [Member] | Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges per share after tax	$ 0.30