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CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($)
$ in Millions
 12 Months Ended
Oct. 31, 2019
Oct. 31, 2018
Oct. 31, 2017
Statement of Comprehensive Income [Abstract]      
Net income $ 1,071 $ 316 $ 684
Other comprehensive income (loss):      
Gain (loss) on derivative instruments, net of tax expense (benefit) of $(2), $1 and $0 (4) 6 0
Amounts reclassified into earnings related to derivative instruments, net of tax expense (benefit) of $(2), $1 and $0 (6) 3 (1)
Foreign currency translation, net of tax expense (benefit) of $(10), $7 and $3 10 (58) 41
Net defined benefit pension cost and post retirement plan costs:      
Change in actuarial net loss, net of tax expense (benefit) of $(25), $(3) and $52 (93) (7) 123
Change in net prior service benefit, net of tax benefit of $(2), $(2) and $(3) (6) (6) (6)
Other comprehensive income (loss) (99) (62) 157
Total comprehensive income $ 972 $ 254 $ 841