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Pension Plans and Other Retirement Benefits - Summary of Target Allocation Guidelines for Plan Assets Along with Actual Allocation of Plan Assets as of Valuation Date (Detail)	Feb. 02, 2019	Feb. 03, 2018
Return-seeking Assets
Pension Plans and Other Retirement Benefits [Line Items]
Target Allocation	50.00%
Actual Allocation	43.00%	47.00%
Liability-hedging Assets
Pension Plans and Other Retirement Benefits [Line Items]
Target Allocation	50.00%
Actual Allocation	49.00%	46.00%
Cash and Cash Equivalents
Pension Plans and Other Retirement Benefits [Line Items]
Target Allocation	0.00%
Actual Allocation	8.00%	7.00%

X

- Definition

Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920

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X

- Definition

Percentage of actual investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920

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+ References

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