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CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (LOSS) (Unaudited) (Parenthetical) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jul. 31, 2019
Jul. 31, 2018
Jul. 31, 2019
Jul. 31, 2018
Other comprehensive income (loss), tax, parenthetical disclosures        
Unrealized gain on derivative instruments, tax $ 1 $ 2 $ 0 $ 0
Amounts reclassified into earnings related to derivative instruments, tax (1) 0 (2) 2
Foreign currency translation, tax (1) 0 (10) 0
Net defined benefit pension cost and post retirement plan costs, tax        
Change in actuarial net loss, tax 5 3 11 8
Change in net prior service benefit, tax $ 0 $ (1) $ (1) $ (2)