Twelve months ended   
                                                          October 31,       
                                                   ------------------------ 
                                                       2016         2015    
                                                   -----------  ----------- 
Net revenue:                                                                
  Personal Systems                                 $    29,987  $    31,520 
  Printing                                              18,260       21,232 
  Corporate Investments                                      7           20 
                                                   -----------  ----------- 
    Total segments                                      48,254       52,772 
  Intersegment net revenue eliminations and other          (16)      (1,309)
                                                   -----------  ----------- 
    Total net revenue                              $    48,238  $    51,463 
                                                   ===========  =========== 
                                                                            
Earnings from continuing operations before                                  
 taxes:(a)                                                                  
  Personal Systems                                 $     1,150  $     1,022 
  Printing                                               3,128        3,765 
  Corporate Investments                                    (98)         (43)
                                                   -----------  ----------- 
    Total segment earnings from operations               4,180        4,744 
  Corporate costs and eliminations                        (188)        (735)
  Stock-based compensation expense                        (182)        (212)
  Acquisition and other related charges                     (7)          (1)
  Restructuring and other charges                         (205)         (63)
  Amortization of intangible assets                        (16)        (102)
  Non-operating retirement-related credits(a)              146          232 
  Defined benefit plan settlement                                           
   (charges)/credits                                                                      (179)                    57  
    Interest  and  other,  net                                                                    212                  (388)
                                                                                                      -----------    -----------  
        Total  earnings  from  continuing  operations                                                              
          before  taxes                                                                    $          3,761    $          3,532  
                                                                                                      ===========    ===========