Goodwill (Tables)

3 Months Ended

Jan. 31, 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 was as follows:

	Hybrid IT		Intelligent Edge		Financial Services		Total
	In millions
Balance at January 31, 2018 and October 31, 2017	$	15,454	$	1,918	$	144	$	17,516