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Fair Value Measurements and Concentrations of Credit Risk (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Feb. 01, 2020
Feb. 02, 2019
Fair Value by Fair Value Hierarchy Level Extensible List [Abstract]    
Long-Lived Assets $ 326 $ 84
Long-lived assets held and used 129 24
Impairments of properties held and used $ 197 $ 60