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Balance Sheet Detail (Inventories) (Details) - USD ($)
$ in Millions
Jul. 30, 2017
Oct. 30, 2016
Inventories    
Customer service spares $ 520 $ 452
Raw materials 634 474
Work-in-process 466 393
Finished goods 1,256 731
Total Inventories 2,876 2,050
Inventory at customer locations included in finished goods 347 190
Inventory, finished goods, evaluation inventory, net of reserves $ 255 $ 197