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Segment Information (Detail)
$ in Millions
3 Months Ended 12 Months Ended
Nov. 01, 2015
segment
Jan. 31, 2015
USD ($)
Oct. 31, 2015
USD ($)
segment
Oct. 31, 2014
USD ($)
Oct. 31, 2013
USD ($)
Segment Reporting Information          
Number of Reportable Segments | segment     7    
Advance royalty proceeds received from intercompany advanced royalty payments and licensing arrangements   $ 8,800   $ 11,500  
Royalty recognition term   5 years   15 years  
Net revenue     $ 103,355 $ 111,454 $ 112,298
Earnings (loss) from operations     5,471 7,185 7,131
Elimination of inter-segment net revenue and other          
Segment Reporting Information          
Net revenue     (3,760) (3,682) (3,515)
Operating segments          
Segment Reporting Information          
Net revenue     107,115 115,136 115,813
Earnings (loss) from operations     10,505 11,328 10,802
Printing          
Segment Reporting Information          
Goodwill transferred     512    
Enterprise Group          
Segment Reporting Information          
Net revenue     26,670 26,809 27,045
Enterprise Group | Elimination of inter-segment net revenue and other          
Segment Reporting Information          
Net revenue     (1,237) (914) (958)
Enterprise Group | Operating segments          
Segment Reporting Information          
Net revenue     27,907 27,723 28,003
Earnings (loss) from operations     3,981 3,995 4,245
Enterprise Services          
Segment Reporting Information          
Net revenue     19,009 21,297 23,041
Enterprise Services | Elimination of inter-segment net revenue and other          
Segment Reporting Information          
Net revenue     (797) (1,101) (1,020)
Enterprise Services | Operating segments          
Segment Reporting Information          
Net revenue     19,806 22,398 24,061
Earnings (loss) from operations     1,051 816 693
Software          
Segment Reporting Information          
Net revenue     3,142 3,375 3,469
Goodwill transferred     (512)    
Software | Elimination of inter-segment net revenue and other          
Segment Reporting Information          
Net revenue     (316) (326) (320)
Software | Operating segments          
Segment Reporting Information          
Net revenue     3,458 3,701 3,789
Earnings (loss) from operations     760 828 848
HP Financial Services          
Segment Reporting Information          
Net revenue     3,131 3,416 3,570
HP Financial Services | Elimination of inter-segment net revenue and other          
Segment Reporting Information          
Net revenue     (85) (82) (59)
HP Financial Services | Operating segments          
Segment Reporting Information          
Net revenue     3,216 3,498 3,629
Earnings (loss) from operations     349 389 399
Corporate Investments          
Segment Reporting Information          
Net revenue     27 302 24
Corporate Investments | Operating segments          
Segment Reporting Information          
Net revenue     27 302 24
Earnings (loss) from operations     (565) (199) (316)
Parent Company          
Segment Reporting Information          
Number of Reportable Segments | segment 3        
Personal Systems and Printing Group | Operating segments          
Segment Reporting Information          
Net revenue     52,701 57,514 56,307
Personal Systems and Printing Group | Personal Systems          
Segment Reporting Information          
Net revenue     30,438 33,304 31,232
Personal Systems and Printing Group | Personal Systems | Elimination of inter-segment net revenue and other          
Segment Reporting Information          
Net revenue     (1,031) (999) (947)
Personal Systems and Printing Group | Personal Systems | Operating segments          
Segment Reporting Information          
Net revenue     31,469 34,303 32,179
Earnings (loss) from operations     1,064 1,270 980
Personal Systems and Printing Group | Printing          
Segment Reporting Information          
Net revenue     20,938 22,951 23,917
Personal Systems and Printing Group | Printing | Elimination of inter-segment net revenue and other          
Segment Reporting Information          
Net revenue     (294) (260) (211)
Personal Systems and Printing Group | Printing | Operating segments          
Segment Reporting Information          
Net revenue     21,232 23,211 24,128
Earnings (loss) from operations     $ 3,865 $ 4,229 $ 3,953