Restructuring Costs, Asset Impairments and Other Special Charges (Details) (USD $)
In Millions
3 Months Ended 6 Months Ended
Apr. 30, 2011
Apr. 30, 2010
Apr. 30, 2011
Apr. 30, 2010
A summary of the charges in the condensed consolidated statement of operations resulting from all restructuring plans [Rollforward]        
Beginning balance     $ 35  
Income statement expense     0  
Asset impairments/inventory charges     0  
Cash payments     (12)  
Ending balance 23   23  
Cost of products and services 0 3 0 6
Research and development 0 0 0 1
Selling, general and administrative (2) 13 0 43
Total restructuring, asset impairments and other special charges (2) 16 0 50
Workforce Reduction [Member]
       
A summary of the charges in the condensed consolidated statement of operations resulting from all restructuring plans [Rollforward]        
Beginning balance     8  
Income statement expense     0  
Asset impairments/inventory charges     0  
Cash payments     (7)  
Ending balance 1   1  
Consolidation of Excess Facilities [Member]
       
A summary of the charges in the condensed consolidated statement of operations resulting from all restructuring plans [Rollforward]        
Beginning balance     26  
Income statement expense     0  
Asset impairments/inventory charges     0  
Cash payments     (4)  
Ending balance 22   22  
Special Charges related to Inventory [Member]
       
A summary of the charges in the condensed consolidated statement of operations resulting from all restructuring plans [Rollforward]        
Beginning balance     1  
Income statement expense     0  
Asset impairments/inventory charges     0  
Cash payments     (1)  
Ending balance $ 0   $ 0 Â