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Postretirement Benefits (Amounts Recognized As Liabilities In The Consolidated Balance Sheets) (Details) - USD ($)
$ in Millions
Feb. 01, 2020
Feb. 02, 2019
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]    
Accrued salaries, wages and related benefits $ 11 $ 10
Other liabilities (noncurrent) 213 180
Net amount recognized $ 224 $ 190