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INCOME TAXES - Tax Reform (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended 12 Months Ended
Jul. 28, 2019
Jul. 29, 2018
Jul. 28, 2019
Jul. 29, 2018
Oct. 28, 2018
U.S. Tax Reform          
Federal corporate statutory tax rate (as a percent)     21.00%   23.30%
Net deferred tax asset remeasurement   $ (62) $ 5 $ 477 $ 414
Deemed earnings repatriation tax $ (32)   (32) 264 290
Total discrete tax expense (benefit) (32) (62) (27) 741  
Accrued foreign withholding taxes on earnings of subsidiaries outside the U.S.         $ 63
Equipment Operations          
U.S. Tax Reform          
Net deferred tax asset remeasurement   (58)   795  
Deemed earnings repatriation tax (24)   (24) 179  
Total discrete tax expense (benefit) (24) (58) (24) 974  
Financial Services          
U.S. Tax Reform          
Net deferred tax asset remeasurement   (4) 5 (318)  
Deemed earnings repatriation tax (8)   (8) 85  
Total discrete tax expense (benefit) $ (8) $ (4) $ (3) $ (233)