Segment Information - Schedule of Reconciliation of Segment Operating Results to HP Consolidated Results (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2021
Net revenue:
Total net revenue	$ 53,718	$ 62,910	$ 63,460
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Operating Income (Loss)	3,456	4,559	5,359
Stock-based compensation expense	(438)	(343)	(330)
Restructuring and other charges	(527)	(218)	(251)
Acquisition and divestiture charges	(240)	(318)	(68)
Amortization of intangible assets	(350)	(228)	(154)
Russia exit charges	0	(23)	0
Interest and other, net	(519)	(235)	2,209
Earnings before taxes	2,937	4,324	7,568
Operating segments
Net revenue:
Total net revenue	53,720	62,915	63,463
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Operating Income (Loss)	5,386	6,150	6,703
Corporate and unallocated costs and other
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Corporate and unallocated costs and other	(375)	(461)	(541)
Other
Net revenue:
Total net revenue	(2)	(5)	(3)
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Stock-based compensation expense	(438)	(343)	(330)
Restructuring and other charges	(527)	(218)	(251)
Acquisition and divestiture charges	(240)	(318)	(68)
Amortization of intangible assets	(350)	(228)	(154)
Russia exit charges	0	(23)	0
Interest and other, net	(519)	(235)	2,209
Personal Systems | Operating segments
Net revenue:
Total net revenue	35,684	44,011	43,332
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Operating Income (Loss)	2,129	2,761	3,152
Printing | Operating segments
Net revenue:
Total net revenue	18,029	18,902	20,128
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Operating Income (Loss)	3,399	3,619	3,647
Corporate Investments | Operating segments
Net revenue:
Total net revenue	7	2	3
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Operating Income (Loss)	(142)	(230)	(96)
Commercial PS | Personal Systems | Operating segments
Net revenue:
Total net revenue	24,712	29,616	26,822
Consumer PS | Personal Systems | Operating segments
Net revenue:
Total net revenue	10,972	14,395	16,510
Supplies | Printing | Operating segments
Net revenue:
Total net revenue	11,452	11,761	12,632
Commercial Printing | Printing | Operating segments
Net revenue:
Total net revenue	4,183	4,225	4,209
Consumer Printing | Printing | Operating segments
Net revenue:
Total net revenue	$ 2,394	$ 2,916	$ 3,287