Goodwill and Intangible Assets - Schedule of Allocation and Changes in the Carrying Amount of Goodwill (Details) - USD ($)	12 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Goodwill
Balance at beginning of period	$ 6,372,000,000	$ 5,968,000,000
Acquisitions/adjustments	8,000,000	399,000,000
Foreign currency translation	0	5,000,000
Balance at end of period	6,380,000,000	6,372,000,000	$ 5,968,000,000
Impairment loss	0	0	0
Personal Systems
Goodwill
Balance at beginning of period	2,613,000,000	2,600,000,000
Acquisitions/adjustments	8,000,000	13,000,000
Foreign currency translation	0	0
Balance at end of period	2,621,000,000	2,613,000,000	2,600,000,000
Printing
Goodwill
Balance at beginning of period	3,759,000,000	3,368,000,000
Acquisitions/adjustments	0	386,000,000
Foreign currency translation	0	5,000,000
Balance at end of period	3,759,000,000	3,759,000,000	3,368,000,000
Corporate Investments
Goodwill
Accumulated impairment losses	$ 800,000,000	$ 800,000,000	$ 800,000,000