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CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (LOSS) (Unaudited) (Parenthetical) - USD ($)
$ in Millions
3 Months Ended
Jan. 31, 2019
Jan. 31, 2018
Other comprehensive income (loss), tax, parenthetical disclosures    
Unrealized loss on derivative instruments, tax $ (2) $ (3)
Amounts reclassified into earnings related to derivative instruments, tax (1) 0
Foreign currency translation, tax (9) 0
Net defined benefit pension cost and post retirement plan costs, tax    
Change in actuarial net loss, tax 4 2
Change in net prior service benefit, tax $ 0 $ (1)