Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Apr. 30, 2011	Jan. 29, 2011
Shareholders' equity:
Preferred shares - authorized shares (in shares)	2,000	2,000
Preferred shares - par value (in dollars per share)	$ 0.01	$ 0.01
Preferred shares - shares issued (in shares)	0	0
Common shares - authorized shares (in shares)	298,000	298,000
Common shares - par value (in dollars per share)	$ 0.01	$ 0.01
Common shares - shares issued (in shares)	117,495	117,495
Common shares - outstanding shares (in shares)	74,201	73,894
Treasury shares - shares (in shares)	43,294	43,601

Face amount or stated value of common stock per share; generally not indicative of the fair market value per share.

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 4

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 30
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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Total number of shares of common stock held by shareholders. May be all or portion of the number of common shares authorized. These shares represent the ownership interest of the common shareholders. Excludes common shares repurchased by the entity and held as Treasury shares. Shares outstanding equals shares issued minus shares held in treasury. Does not include common shares that have been repurchased.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Face amount or stated value per share of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer); generally not indicative of the fair market value per share.

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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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