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INVESTMENTS (Tables)
 12 Months Ended
Oct. 31, 2016
Schedule of Investments [Abstract]  
Equity Investments
The following table summarizes the company's equity investments as of October 31, 2016 and 2015 (net book value):

 
October 31,
 
2016
 
2015
 
(in millions)
Long-Term
 
 
 
Cost method investments
$
104

 
$
23

Trading securities
31

 
35

Equity method investments
—

 
28

Total
$
135

 
$
86
Realized gains and losses on sale of available-for-sale securities and other than temporary impairments Included in Other income (expense)
Amounts included in other income (expense), net for the appropriate share of loss on equity method investments and other than temporary impairments were as follows:

 
Years Ended October 31,
 
2016
 
2015
 
2014
 
(in millions)
Equity method investments - share of losses
$
(10
)
 
$
(9
)
 
$
(7
)
Equity method investments - other than temporary impairments
(18
)
 
—

 
—

Total
$
(28
)
 
$
(9
)
 
$
(7
)