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STOCKHOLDERS' EQUITY - Reclassifications out of accumulated comprehensive income (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Jul. 31, 2018
Jul. 31, 2017
Jul. 31, 2018
Jul. 31, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives        
Unrealized gain (loss) on derivatives $ (1) $ 1 $ (6) $ 3
Unrealized gains and (losses) on derivatives reclassified to cost of products, before tax (1) 1 (6) 3
Reclassification of (gains) and losses into earnings related to derivative instruments, tax 0 0 2 (1)
Unrealized gains and (losses) on derivatives reclassified to cost of products, net of tax (1) 1 (4) 2
Actuarial net loss (10) (12) (29) (46)
Prior service benefit 2 2 6 7
Actuarial net loss and prior service benefit reclassified, before tax (8) (10) (23) (39)
Tax on actuarial net loss and prior service benefit reclassified 2 3 6 12
Actuarial net loss and prior service benefit reclassified, net of tax (6) (7) (17) (27)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax $ (7) $ (6) $ (21) $ (25)