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Pension Plans and Other Retirement Benefits - Additional Information (Detail) $ in Millions	3 Months Ended
	May 05, 2018 USD ($)
Pension Plans and Other Retirement Benefits [Line Items]
Minimum percentage of pension liability	80.00%
Anticipated employer's contribution to fund current benefit and expense payments under the unfunded plan in fiscal 2019	$ 2.5

X

- Definition

Minimum percentage of pension liability under pension protection act.

+ References

No definition available.

+ Details

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Period Type:	duration

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- Definition

Amount of contributions expected to be received by defined benefit plan from employer in next fiscal year following latest fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

+ Details

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Balance Type:	debit
Period Type:	instant

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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