Guarantees, Indemnifications and Warranties (Tables)

6 Months Ended

Apr. 30, 2017

Guarantees [Abstract]

Changes in aggregate product warranty liabilities and changes

The Company's aggregate product warranty liabilities as of April 30, 2017, and changes during the six months ended April 30, 2017 were as follows:

	Six months ended April 30, 2017
	In millions
Balance at beginning of period	$	497
Accruals for warranties issued	167
Adjustments related to pre-existing warranties (including changes in estimates)	(6		)
Settlements made (in cash or in kind)	(159		)
Balance at end of period	$	499