Goodwill and Intangible Assets - Schedule of Reportable Segments And Changes in the Carrying Amount of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2023
Goodwill
Balance at beginning of period	$ 8,627	$ 8,591
Acquisitions	79	28
Foreign currency translation and other	0	8
Balance at end of period	8,706	8,627
Personal Systems
Goodwill
Balance at beginning of period	4,748	4,722
Acquisitions	0	26
Foreign currency translation and other	(24)	0
Balance at end of period	4,724	4,748
Printing
Goodwill
Balance at beginning of period	3,761	3,751
Acquisitions	0	2
Foreign currency translation and other	24	8
Balance at end of period	3,785	3,761
Corporate Investments
Goodwill
Balance at beginning of period	118	118
Acquisitions	79	0
Foreign currency translation and other	0	0
Balance at end of period	197	118
Accumulated impairment losses	$ 800	$ 800	$ 800