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Property and Leases (Components of Lease Costs) (Details) - USD ($)
$ in Millions
12 Months Ended
Jan. 31, 2021
Feb. 02, 2020
Feb. 03, 2019
Property and Leases [Abstract]      
Operating lease cost $ 782 $ 827  
Finance lease cost:      
Amortization of leased assets 167 86  
Interest on lease liabilities 112 92  
Short-term lease cost 75 98  
Variable lease cost 277 241  
Sublease income (13) (14)  
Net lease cost $ 1,400 $ 1,330  
Operating lease rent expense     $ 1,100