Defined Benefit Pension Plans and Other Benefit Plans Defined Benefit Pension Plans and Other Postretirement Benefit Plans (Details 10) (Details)	12 Months Ended
Feb. 02, 2013	Jan. 28, 2012
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	100.00%	100.00%
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	66.00%	63.00%
Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	34.00%	37.00%
Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	0.00%	0.00%

Target allocation of investments of this type to total plan assets presented on a weighted average basis.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (d)(i)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (c)(i)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e2446-114920

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration