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Property at Cost - Additional information (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jul. 31, 2021
Aug. 01, 2020
Jul. 31, 2021
Aug. 01, 2020
Property, Plant and Equipment [Abstract]        
Depreciation expense $ 213 $ 217 $ 425 $ 434
Increase (decrease) in accrued capital additions     $ 37 $ (92)