Annual report pursuant to Section 13 and 15(d)

Postretirement Health Care and Life Insurance Benefits (Assumed Health Care Cost Trend Rates) (Details)

v3.21.1
Postretirement Health Care and Life Insurance Benefits (Assumed Health Care Cost Trend Rates) (Details)
12 Months Ended
Jan. 30, 2021
Feb. 01, 2020
Other Postretirement Benefits Plan [Member]    
Rates to which is the cost trend rate is assumed to decline (the ultimate trend rate) 4.50% 4.50%
Year that the rate reaches the ultimate trend rate 2029 2027
Minimum [Member]    
Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year 4.90% 5.25%
Maximum [Member]    
Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year 8.00% 8.63%