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Retirement Plans and Other Benefits (Changes in Accumulated Other Comprehensive Loss) (Details) - USD ($)
$ in Millions
12 Months Ended
Feb. 01, 2020
Feb. 02, 2019
Pension Benefits [Member]    
Schedule of Pension and Other Postretirement Benefits Recognized in Accumulated Other Comprehensive Income (Loss) [Line Items]    
Net actuarial loss (gain) at beginning of year $ 391  
Amortization of net (loss) gain (12)  
Loss (gain) arising during the year 13  
Net actuarial loss (gain) at end of year 392  
Total amount recognized 392 $ 392
AOCL expected to be recognized as net periodic benefit cost (income) 12  
Postretirement Benefits [Member]    
Schedule of Pension and Other Postretirement Benefits Recognized in Accumulated Other Comprehensive Income (Loss) [Line Items]    
Net actuarial loss (gain) at beginning of year (6)  
Amortization of net (loss) gain 1  
Net actuarial loss (gain) at end of year (5)  
Total amount recognized (5) $ (6)
AOCL expected to be recognized as net periodic benefit cost (income) $ (1)