Defined Benefit Pension Plans and Other Postretirement Benefit Plans - Plan Assets (Details)	Feb. 03, 2018	Jan. 28, 2017
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	100.00%	100.00%
Cash
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	2.00%	0.00%
Equity securities
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	64.00%	65.00%
Debt securities
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	34.00%	35.00%