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CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (Unaudited) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Jul. 31, 2021
Jul. 31, 2020
Jul. 31, 2021
Jul. 31, 2020
Net income $ 264 $ 199 $ 768 $ 497
Other comprehensive income (loss):        
Unrealized gain (loss) on derivative instruments, net of tax expense (benefit) of $1, $(2) $(1) and $(2) 0 (7) (4) (4)
Amounts reclassified into earnings related to derivative instruments, net of tax expense of $1, $0, $5 and $0 4 (1) 14 (2)
Foreign currency translation, net of tax expense of $0, $0, $0 and $0 (17) 60 27 20
Net defined benefit pension cost and post retirement plan costs:        
Change in actuarial net loss, net of tax expense of $3, $4, $11 and $9 11 10 32 28
Change in net prior service benefit, net of tax expense (benefit) of $0, $(1), $0 and $(1) 0 0 (1) (4)
Other comprehensive income (loss) (2) 62 68 38
Total comprehensive income $ 262 $ 261 $ 836 $ 535