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INCOME TAXES - Tax Reform (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Apr. 29, 2018
Apr. 28, 2019
Apr. 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 $ (177)   $ 539 $ 414
Deemed earnings repatriation tax 3   264 290
Total discrete tax expense (benefit) (174)   803  
Accrued foreign withholding taxes on earnings of subsidiaries outside the U.S.       $ 63
Equipment Operations        
U.S. Tax Reform        
Net deferred tax asset remeasurement (158)   853  
Deemed earnings repatriation tax (49)   179  
Total discrete tax expense (benefit) (207)   1,032  
Financial Services        
U.S. Tax Reform        
Net deferred tax asset remeasurement (19)   (314)  
Deemed earnings repatriation tax 52   85  
Total discrete tax expense (benefit) $ 33   $ (229)