CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (LOSS) (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2024	Jul. 31, 2023
Other comprehensive income (loss), tax, parenthetical disclosures
Unrealized gain (loss) on derivative instruments, tax expense (benefit)	$ 0	$ 0	$ (1)	$ (5)
Amounts reclassified into earnings related to derivative instruments, tax expense (benefit)	(1)	1	(2)	0
Foreign currency translation, tax expense (benefit)	0	(1)	0	(2)
Net defined benefit pension cost and post retirement plan costs, tax
Change in actuarial net gain (loss), tax expense (benefit)	(2)	0	(4)	0
Change in net prior service benefit, tax expense	$ 0	$ 0	$ 0	$ 0