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Guarantees, Indemnifications and Warranties (Tables)
 12 Months Ended
Oct. 31, 2017
Guarantees and Product Warranties [Abstract]  
Changes in Aggregate Product Warranty Liabilities
HP’s aggregate product warranty liabilities and changes were as follows:
 
As of October 31
 
2017
 
2016
 
In millions
Balance at beginning of year
$
980

 
$
1,184

Accruals for warranties issued
925

 
966

Adjustments related to pre-existing warranties (including changes in estimates)
(8
)
 
(23
)
Settlements made (in cash or in kind)
(999
)
 
(1,147
)
Balance at end of year
$
898

 
$
980