Annual report pursuant to Section 13 and 15(d)

Postretirement Health Care and Life Insurance Benefits (Narrative) (Details)

v3.20.1
Postretirement Health Care and Life Insurance Benefits (Narrative) (Details) - Other Postretirement Benefits Plan [Member] - USD ($)
$ in Millions
12 Months Ended
Feb. 01, 2020
Feb. 02, 2019
Feb. 03, 2018
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year $ 5    
Discount rate 3.57% 3.28% 3.17%