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STOCKHOLDERS' EQUITY (Components of Accumulated Other Comprehensive Loss) (Details) - USD ($)
$ in Millions
Oct. 31, 2019
Oct. 31, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]    
Unrealized gain on equity securities, net of tax (expense) of zero and $(2) $ 0 $ 0
Foreign currency translation, net of tax (expense) of $(63) and $(63) (43) (60)
Unrealized losses on defined benefit plans, net of tax benefit of $113 and $81 (532) (426)
Unrealized losses on derivative instruments, net of tax benefit (expense) of zero and $(1) (3) (2)
Total accumulated other comprehensive loss (578) (488)
Accumulated other Comprehensive Income (Loss), Tax [Abstract]    
Unrealized gain on equity securities, tax 0 2
Foreign currency translation, tax (63) 63
Unrealized losses on defined benefit plans, tax 113 81
Unrealized gains (losses) on derivative instruments, tax $ 0 $ 1