Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data	May 29, 2011	May 30, 2010
Current assets
Allowance for doubtful accounts	$ 7.8	$ 8.5
Common stockholders' equity
Common stock, par value	$ 5	$ 5
Common stock, authorized	1,200,000,000	1,200,000,000
Common stock, issued	567,907,172	567,907,172
Treasury stock, common shares	157,412,899	125,637,495

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Section 50
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Face amount or stated value of common stock per share; 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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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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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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