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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS
 12 Months Ended
Oct. 31, 2019
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
VALUATION AND QUALIFYING ACCOUNTS
SCHEDULE II

VALUATION AND QUALIFYING ACCOUNTS

Description
 
Balance at
Beginning
of Period
 
Additions Charged to
Expenses or
Other Accounts*
 
Deductions Credited to Expenses or Other Accounts**
 
Balance at
End of
Period
 
 
(in millions)
2019
 
 
 
 
 
 
 
 
Tax valuation allowance
 
$
79

 
$
2

 
$
(8
)
 
$
73

2018
 
 
 
 
 
 
 
 
Tax valuation allowance
 
$
63

 
$
18

 
$
(2
)
 
$
79

2017
 
 
 
 
 
 
 
 
Tax valuation allowance
 
$
38

 
$
31

 
$
(6
)
 
$
63

* Additions include current-year additions charged to expense and current-year build due to increases in net deferred tax assets, return to provision true-ups, other adjustments and Other Comprehensive Income ("OCI") impact to deferred taxes.
** Deductions include current-year releases credited to expense and current-year reductions due to decreases in net deferred tax assets, return to provision true-ups, other adjustments and OCI impact to deferred taxes.