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INCOME AND OTHER TAXES - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Aug. 03, 2020
Jul. 31, 2020
Aug. 02, 2019
Jul. 31, 2020
Aug. 02, 2019
Jan. 31, 2020
Income Tax Contingency [Line Items]            
Effective income tax rate   (119.80%) 3912.60% (101.40%) 1895.70%  
Pre-tax gains (losses)   $ 500 $ (111) $ 636 $ (254)  
Discrete tax benefit from audit settlement   746   746    
Discrete tax benefit from intra-entity asset transfer     $ 4,500 59 $ 4,900  
Unrecognized tax benefits   $ 1,300   $ 1,300   $ 2,500
Subsequent Event            
Income Tax Contingency [Line Items]            
Payment for tax settlement $ 435