SEGMENT INFORMATION (Segment Assets to Total Assets Recon) (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
Segment Reporting [Abstract]
Total reportable segments' assets	$ 4,599	$ 4,330
Capital expenditures	120	132	$ 72
Cash and cash equivalents	1,598	913
Prepaid expenses	130	106
Other current assets	3	9
Investments	46	46
Long-term and other receivables	94	118
Other	153	302
Total assets	$ 6,623	$ 5,824