Industry Segment Operations (Percentage by Customer) (Details) - Sales Revenue	3 Months Ended
	Jan. 27, 2019	Jan. 28, 2018
Entity-Wide Revenue, Major Customer [Line Items]
Percentage of net sales	100.00%	100.00%
Customer Concentration Risk | Toshiba
Entity-Wide Revenue, Major Customer [Line Items]
Percentage of net sales	14.00%
Customer Concentration Risk | SK Hynix Inc.
Entity-Wide Revenue, Major Customer [Line Items]
Percentage of net sales	13.00%
Customer Concentration Risk | Intel Corporation
Entity-Wide Revenue, Major Customer [Line Items]
Percentage of net sales	13.00%
Customer Concentration Risk | Taiwan Semiconductor Manufacturing Company Limited
Entity-Wide Revenue, Major Customer [Line Items]
Percentage of net sales	11.00%