Segment Information - Schedule of Reconciliation of Segment Operating Results to HP Consolidated Results (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Net revenue:
Total net revenue	$ 12,913	$ 16,490	$ 26,741	$ 33,518
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Total segment earnings from operations	762	1,278	1,527	2,637
Restructuring and other charges	(200)	(82)	(341)	(150)
Acquisition and divestiture charges	(73)	(32)	(157)	(52)
Amortization of intangible assets	(86)	(52)	(171)	(104)
Interest and other, net	(160)	(39)	(341)	(71)
Earnings before taxes	602	1,239	1,186	2,566
Operating Segments
Net revenue:
Total net revenue	12,915	16,495	26,743	33,523
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Total segment earnings from operations	1,306	1,691	2,640	3,443
Other
Net revenue:
Total net revenue	(2)	(5)	(2)	(5)
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Stock-based compensation expense	(95)	(70)	(262)	(203)
Restructuring and other charges	(200)	(82)	(341)	(150)
Acquisition and divestiture charges	(73)	(32)	(157)	(52)
Amortization of intangible assets	(86)	(52)	(171)	(104)
Interest and other, net	(160)	(39)	(341)	(71)
Corporate and unallocated costs and other
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Corporate and unallocated costs and other	(90)	(177)	(182)	(297)
Personal Systems | Operating Segments
Net revenue:
Total net revenue	8,176	11,532	17,391	23,728
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Total segment earnings from operations	445	794	942	1,748
Printing | Operating Segments
Net revenue:
Total net revenue	4,736	4,963	9,348	9,794
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Total segment earnings from operations	899	949	1,769	1,821
Corporate Investments | Operating Segments
Net revenue:
Total net revenue	3	0	4	1
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Total segment earnings from operations	(38)	(52)	(71)	(126)
Commercial PS | Personal Systems | Operating Segments
Net revenue:
Total net revenue	5,922	7,817	12,351	15,674
Consumer PS | Personal Systems | Operating Segments
Net revenue:
Total net revenue	2,254	3,715	5,040	8,054
Supplies | Printing | Operating Segments
Net revenue:
Total net revenue	3,006	3,131	5,863	6,199
Commercial Printing | Printing | Operating Segments
Net revenue:
Total net revenue	1,089	1,042	2,145	2,081
Consumer Printing | Printing | Operating Segments
Net revenue:
Total net revenue	$ 641	$ 790	$ 1,340	$ 1,514