Segment Information - Schedule of Reconciliation of Segment Operating Results to HP Consolidated Results (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2022	Jan. 31, 2021
Segment Information
Net revenue	$ 17,028	$ 15,646
Total segment earnings from operations	1,359	1,321
Restructuring and other charges	(68)	(121)
Acquisition-related charges	(20)	(6)
Amortization of intangible assets	(52)	(29)
Interest and other, net	(32)	(25)
Total earnings before taxes	1,327	1,296
Operating segments
Segment Information
Net revenue	17,028	15,647
Total segment earnings from operations	1,762	1,729
Other
Segment Information
Net revenue	0	(1)
Corporate and unallocated costs and other	(130)	(136)
Stock-based compensation expense	(133)	(116)
Restructuring and other charges	(68)	(121)
Acquisition-related charges	(20)	(6)
Amortization of intangible assets	(52)	(29)
Interest and other, net	(32)	(25)
Personal Systems | Operating segments
Segment Information
Net revenue	12,196	10,603
Total segment earnings from operations	957	758
Printing | Operating segments
Segment Information
Net revenue	4,831	5,044
Total segment earnings from operations	879	998
Corporate Investments | Operating segments
Segment Information
Net revenue	1	0
Total segment earnings from operations	(74)	(27)
Notebooks | Personal Systems | Operating segments
Segment Information
Net revenue	8,421	7,366
Desktops | Personal Systems | Operating segments
Segment Information
Net revenue	2,807	2,400
Workstations | Personal Systems | Operating segments
Segment Information
Net revenue	534	382
Other | Personal Systems | Operating segments
Segment Information
Net revenue	434	455
Supplies | Printing | Operating segments
Segment Information
Net revenue	3,068	3,146
Commercial | Printing | Operating segments
Segment Information
Net revenue	1,039	957
Consumer | Printing | Operating segments
Segment Information
Net revenue	$ 724	$ 941