Goodwill (Tables)

6 Months Ended

Apr. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Allocation and Changes in the Carrying Amount of Goodwill

Goodwill allocated to the Company's reportable segments as of April 30, 2018 and change in the respective carrying amounts during the six months then ended were as follows:

	Hybrid IT		Intelligent Edge		Financial Services		Total
	In millions
Balance at October 31, 2017	$	15,454	$	1,918	$	144	$	17,516
Goodwill acquired during the period	12		3		—		15
Goodwill adjustments	6		—		—		6
Balance at April 30, 2018	$	15,472	$	1,921	$	144	$	17,537