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Warranty, Guarantees And Contingencies (Tables)
 6 Months Ended
Apr. 30, 2017
Commitments and Contingencies Disclosure [Abstract]  
Changes in the warranty reserves
Changes in the warranty reserves are presented below:
 
 
Three Months Ended
 
Six Months Ended
 
April 30,
2017
 
May 1,
2016
 
April 30,
2017
 
May 1,
2016
 
 
 
 
 
 
 
 
 
(In millions)
Beginning balance
$
170

 
$
119

 
$
153

 
$
126

Warranties issued
42

 
30

 
82

 
56

Change in reserves related to preexisting warranty
(1
)
 
(5
)
 
2

 
(16
)
Consumption of reserves
(29
)
 
(23
)
 
(55
)
 
(45
)
Ending balance
$
182

 
$
121

 
$
182

 
$
121