Balance Sheet Details (Narratives) (Details) (USD $)	3 Months Ended		6 Months Ended
	Apr. 28, 2012	Apr. 30, 2011	Apr. 28, 2012 years parcels acre	Apr. 30, 2011
Balance Sheet Details [Abstract]
Option to purchase unimproved parcel in years			4
Number of parcels of land potentially owned if option exercised			4
Number of acres			4
Fixed price for land purchase option	$ 26,000,000		$ 26,000,000
Depreciation expense	$ 21,969,000	$ 22,222,000	$ 42,991,000	$ 44,087,000