Stockholders' Equity (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended	9 Months Ended
Feb. 24, 2013	Nov. 25, 2012	Feb. 24, 2013	Feb. 26, 2012
Equity, Class of Treasury Stock [Line Items]
Authorization to repurchase common stock, shares	187,400,000		187,400,000
Total repurchased shares of common stock, shares	171,900,000		171,900,000
Common stock repurchased, shares	2,000		1,045,000
Common stock repurchased, total cost	$ 0.1		$ 52.4
Treasury shares retirement, shares		159,300,000	159,300,000	0
Treasury shares retirement
Treasury Stock
Equity, Class of Treasury Stock [Line Items]
Treasury shares retirement		3,740.0	$ (3,737.5)

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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- Definition

Amount of decrease of par value, additional paid in capital (APIC) and retained earnings of common and preferred stock retired from treasury when treasury stock is accounted for under the cost method.

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