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Property and Leases (Depreciation and Finance Lease Amortization Expense) (Details) - USD ($)
$ in Millions
12 Months Ended
Jan. 31, 2021
Feb. 02, 2020
Feb. 03, 2019
Property and Leases [Abstract]      
Depreciation and finance lease amortization expense $ 2,425 $ 2,223 $ 2,076