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Postretirement Benefits (Weighted-Average Assumptions Used To Determine Benefit Obligations And SERP Expense) (Details)
12 Months Ended
Feb. 01, 2020
Feb. 02, 2019
Feb. 03, 2018
Assumptions used to determine benefit obligation:      
Discount rate 2.97% 4.27% 3.95%
Rate of compensation increase 2.50% 2.50% 3.00%
Assumptions used to determine SERP expense:      
Discount rate 4.27% 3.95% 4.31%
Rate of compensation increase 2.50% 3.00% 3.00%