Equity Investments And Other (Easton Investment) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended	3 Months Ended	9 Months Ended
Oct. 27, 2012	Oct. 29, 2011	Oct. 27, 2012 Easton Investment [Member]	Oct. 27, 2012 Easton Investment [Member] acre	Jan. 28, 2012 Easton Investment [Member]	Oct. 29, 2011 Easton Investment [Member]
Acres Of Land				1,300
Equity method investment carrying value included in Other Assets			$ 73	$ 73	$ 70	$ 69
Proceeds from Equity Method Investment, Dividends or Distributions, Return of Capital - Easton			13
Gain (Loss) on Equity Method Investment Dividends Or Distributions	$ (13)	$ 0	$ 13

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.12)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=16385135&loc=d3e33749-111570

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant