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STOCKHOLDER"S EQUITY - Dividends (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended
Jul. 31, 2018
Jul. 31, 2017
Jul. 31, 2018
Jul. 31, 2017
Dividends Paid        
Cash dividends paid per common share $ 0.149 $ 0.132 $ 0.447 $ 0.396
Aggregate amount of cash dividends paid $ 48 $ 42 $ 144 $ 127