XML 73 R95.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
INVESTMENTS (Narratives) (Details) - USD ($)
12 Months Ended
Oct. 31, 2019
Oct. 31, 2018
Oct. 31, 2017
Investments, Debt and Equity Securities [Abstract]      
Impairment on investments $ 0 $ 0 $ 0
Net realized gains on investments sold 1,000,000 0 0
Net unrealized gains on investments still held 6,000,000 0 2,000,000
Proceeds from the sale of investments $ 7,000,000 0 45,000,000
Loss recognized in accumulated other comprehensive income   $ 17,000,000  
Gain recognized in accumulated other comprehensive income     $ 5,000,000