XML 80 R69.htm IDEA: XBRL DOCUMENT v3.19.1
GOODWILL AND OTHER INTANGIBLE ASSETS GOODWILL AND OTHER INTANGIBLE ASSETS Textuals (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Apr. 30, 2019
Apr. 30, 2018
Apr. 30, 2019
Apr. 30, 2018
Goodwill [Line Items]        
Document Period End Date     Apr. 30, 2019  
Additions to other intangible assets     $ 0  
Amortization of intangible assets $ 51 $ 51 $ 102 $ 102