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Segment Information (Detail)
$ in Millions
3 Months Ended 12 Months Ended
Jan. 31, 2015
Oct. 31, 2015
USD ($)
segment
Oct. 31, 2014
USD ($)
Oct. 31, 2013
USD ($)
Segment Information        
Number of reportable segments | segment   3    
Segment Reporting Information        
Advance royalty proceeds received from intercompany advanced royalty payments and licensing arrangements   $ 3,800 $ 3,800  
Royalty recognition term 5 years 5 years 15 years  
Net revenue   $ 51,463 $ 56,651 $ 55,273
Earnings (loss) from operations   3,920 4,256 3,516
Intersegment net revenue eliminations and other        
Segment Reporting Information        
Net revenue   (1,309) (1,243) (1,050)
Operating segments        
Segment Reporting Information        
Net revenue   52,772 57,894 56,323
Earnings (loss) from operations   4,744 5,583 4,839
Corporate Investments        
Segment Reporting Information        
Net revenue   20 296 16
Corporate Investments | Operating segments        
Segment Reporting Information        
Net revenue   20 296 16
Earnings (loss) from operations   (43) 157 (94)
Personal Systems and Printing Group | Personal Systems        
Segment Reporting Information        
Net revenue   31,520 34,387 32,179
Personal Systems and Printing Group | Personal Systems | Operating segments        
Segment Reporting Information        
Net revenue   31,520 34,387 32,179
Earnings (loss) from operations   1,022 1,265 980
Personal Systems and Printing Group | Printing        
Segment Reporting Information        
Net revenue   21,232 23,211 24,128
Personal Systems and Printing Group | Printing | Operating segments        
Segment Reporting Information        
Net revenue   21,232 23,211 24,128
Earnings (loss) from operations   $ 3,765 $ 4,161 $ 3,953