Other Postretirement Benefit Plans - Net Periodic Benefit Cost Assumptions (Details)	12 Months Ended
Jan. 30, 2021	Feb. 01, 2020	Feb. 02, 2019
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rate	1.49%	3.48%	3.67%

Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(1)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration