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Fair Value for Pension Assets Measured at Fair Value on Recurring Basis (Detail) - Funded Plan - USD ($) $ in Thousands		Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		$ 1,176,960	$ 1,119,842	$ 1,170,748
Fair value of assets		1,176,960	1,119,842
Futures Contracts
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		(31)	(33)
Short-Term Investments
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		63,704	57,713
Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		208,451	216,526
Corporate And Government Bond Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		386,777	337,864
Assets in Fair Value Hierarchy
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		658,901	612,070
Assets Measured at Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[1]	518,059	507,772
Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets		272,155	274,239
Level 1 | Short-Term Investments
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		63,704	57,713
Level 1 | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		208,451	216,526
Level 1 | Assets in Fair Value Hierarchy
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		272,155	274,239
Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets		386,746	337,831
Level 2 | Futures Contracts
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		(31)	(33)
Level 2 | Corporate And Government Bond Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		386,777	337,864
Level 2 | Assets in Fair Value Hierarchy
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		$ 386,746	$ 337,831
[1] In accordance with Subtopic 820-10, certain investments that were measured using net asset value per share (or its equivalent) as a practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the fair value of assets presented above.

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Defined Benefit Plan Fair Value Of Plan Assets Gross

+ References

No definition available.

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- Definition

Fair value of assets that have been segregated and restricted to provide pension or postretirement benefits. Assets include, but are not limited to, stocks, bonds, other investments, earnings from investments, and contributions by the employer and employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 30
-Section 35
-Paragraph 50
-URI http://asc.fasb.org/extlink&oid=64937038&loc=d3e12355-114930

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Plan Assets
-URI http://asc.fasb.org/extlink&oid=6749337

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Plan Assets
-URI http://asc.fasb.org/extlink&oid=6520858

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