Consolidated Statements Of Changes In Stockholders' Equity And Accumulated Other Comprehensive Income (Loss) (Parenthetical) (USD $) In Millions, unless otherwise specified	9 Months Ended
Feb. 26, 2012	Feb. 27, 2011
Consoldiated Statements Of Changes In Stockholders' Equity And Accumulated Other Comprehensive Income (Loss) [Abstract]
Changes in fair value of marketable securities, tax	$ 0.1	$ 0
Change in fair value of derivatives, tax	25.0	1.1
Net unamortized (gain) loss arising during period, including amortization of unrecognized net actuarial loss, taxes	$ 3.3	$ 3.0
Stock option exercises, shares	1.4	1.8
Purchases of common stock for treasury, shares	7.9	6.3
Issuance of treasury stock under Employee Stock Purchase Plan and other plans, shares	0.1	0.2

Tax effect of the gross appreciation or the gross loss, net of reclassification adjustment, in the value of the total unsold available-for-sale securities at the end of an accounting period.

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Total tax effect of the change in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. The change includes an entity's share of an equity investee's increase or decrease in deferred hedging gains or losses. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.

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- Definition

For each annual statement of income presented, the tax effect of the net gain (loss) recognized in other comprehensive income that is a reclassification adjustment of other comprehensive income as a result of being recognized as a component of net periodic benefit cost for the period.

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- Definition

Number of shares issued during the period as a result of an employee stock purchase plan.

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- Definition

Number of share options (or share units) exercised during the current period.

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