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Guarantees, Indemnifications and Warranties (Tables)
 12 Months Ended
Oct. 31, 2017
Guarantees [Abstract]  
Changes in aggregate product warranty liabilities and changes
The Company's aggregate product warranty liabilities and changes therein were as follows:
 
Fiscal years ended October 31,
 
2017
 
2016
 
In millions
Balance at beginning of year
$
497

 
$
523

Accruals for warranties issued
292

 
305

Adjustments related to pre-existing warranties (including changes in estimates)
(8
)
 
1

Divested as part of the H3C transaction
—

 
(19
)
Settlements made (in cash or in kind)
(306
)
 
(313
)
Balance at end of year
$
475

 
$
497