Stock Plans (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
Aug. 28, 2011	Aug. 29, 2010
Share Based Compensation Allocation And Classification In Financial Statements [Abstract]
Compensation expense reltated to stock-based payments	$ 46.5	$ 56.6
Unrecognized compensation expense related to non-vested stock options and restricted stock units	228.6
Unrecognized compensation expense on non-vested awards weighted average period of recognition	25
Share Based Compensation Arrangement By Share Based Payment Award Options Additional Disclosures [Abstract]
Net cash proceeds	24.0	88.3
Intrinsic value of options exercised	13.8	70.0
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Method Used	We estimate the fair value of each option on the grant date using a Black-Scholes option-pricing model. Black-Scholes option pricing models require us to make predictive assumptions regarding future stock price volatility, employee exercise behavior, and dividend yield. We estimate our future stock price volatility using the historical volatility over the expected term of the option, excluding time periods of volatility we believe a marketplace participant would exclude in estimating our stock price volatility. We also have considered, but did not use, implied volatility in our estimate, because trading activity in options on our stock, especially those with tenors of greater than 6 months, is insufficient to provide a reliable measure of expected volatility. Our method of selecting the other valuation assumptions is explained on page 65 in our Annual Report on Form 10-K for the fiscal year ended May 29, 2011.
Estimated fair values of stock options granted	$ 5.89	$ 4.08
Assumptions:
Risk-free interest rate	2.90%	3.00%
Expected term	8.500	8.500
Expected volatility	17.60%	18.50%
Dividend yield	3.30%	3.00%
Options (Thousands) [Abstract]
Balance as of May 29, 2011	67,547,300
Granted	3,932,200
Exercised	(1,061,800)
Forfeited or expired	(34,300)
Outstanding as ofAug. 28, 2011	70,383,400
Exercisable as of Aug. 28, 2011	48,430,600
Weighted Average Exercise Price [Abstract]
Balance as of May 29, 2011	$ 26.82
Granted	$ 37.21
Exercised	$ 24.25
Forfeited or expired	$ 31.04
Balance as of Aug. 28, 2011	$ 27.43
Exercisable as of Aug. 28, 2011	$ 24.96
Weighted Average Remaining Contractual Term (Years) [Abstract]
Outstanding as of Aug. 28, 2011	4.87
Exercisable as Aug. 28, 2011	3.41
Aggregate Intrinsic Value (Millions) [Abstract]
Outstanding as of Aug. 28, 2011	656.6
Exercisable as of Aug. 28, 2011	567.7
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Additional Disclosures [Abstract]
Total grant-date fair value of restricted stock units that vested in period	$ 80.5	$ 72.3
Restricted Stock Unit Equity Classified [Member]
Share Settled Units (Thousands) [Abstract]
Non-vested as of May 29, 2011	9,169,900
Granted	2,541,400
Vested	(2,573,900)
Forfeited or expired	(92,200)
Non-vested as of Aug. 28, 2011	9,045,200
Weighted Average Grant-Date Fair Value [Abstract]
Non-vested as of May 29, 2011	$ 30.92
Granted	$ 37.20
Vested	$ 29.48
Forfeited or expired	$ 31.94
Non-vested as of Aug. 28, 2011	$ 33.09
Restricted Stock Unit Liability Classified Share Settled [Member]
Share Settled Units (Thousands) [Abstract]
Non-vested as of May 29, 2011	437,200
Granted	89,300
Vested	(81,200)
Forfeited or expired	(13,800)
Non-vested as of Aug. 28, 2011	431,500
Weighted Average Grant-Date Fair Value [Abstract]
Non-vested as of May 29, 2011	$ 31.01
Granted	$ 37.21
Vested	$ 28.99
Forfeited or expired	$ 31.77
Non-vested as of Aug. 28, 2011	$ 32.65
Restricted Stock Unit Liability Classified Cash Settled [Member]
Share Settled Units (Thousands) [Abstract]
Non-vested as of May 29, 2011	4,515,100
Granted	0
Vested	(71,800)
Forfeited or expired	(33,100)
Non-vested as of Aug. 28, 2011	4,410,200
Weighted Average Grant-Date Fair Value [Abstract]
Non-vested as of May 29, 2011	$ 31.58
Granted	$ 0.00
Vested	$ 31.26
Forfeited or expired	$ 31.86
Non-vested as of Aug. 28, 2011	$ 31.59

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Net Cash proceeds from the exercise of stock options.

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Represents the expense recognized during the period arising from share-based compensation arrangements (for example, shares of stock, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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As of the latest balance-sheet date presented, the total compensation cost related to outstanding, nonvested share-based compensation awards not yet recognized (will be charged against earnings as services are performed or other vesting criteria are met).

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The weighted average period over which unrecognized share-based compensation costs are expected to be reported.

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The number of shares under a share-based award plan other than a stock option plan that were settled during the reporting period due to a failure to satisfy vesting conditions pertaining to all option plans.

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The weighted average fair value as of the grant date of share-based award plans other than stock option plans that were not exercised or put into effect during the reporting period as a result of the occurrence of a terminating event specified in the contractual agreement of the plan.

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The number of shares issuable under a share-based award plan pertaining to grants made during the period on other than stock option plans (for example, phantom stock plan, stock appreciation rights plan, performance target plan).

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The weighted average fair value at grant for nonvested share-based awards issued during the period on other than stock option plans (for example, phantom stock plan, stock appreciation rights plan, performance target plan).

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The number of outstanding awards on nonstock option plans (for example, phantom stock plan, stock appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares.

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The weighted average fair value of nonvested awards on share-based plans excluding option plans (for example, phantom stock plan, stock appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares.

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The decrease in the number of shares potentially issuable under a share-based award plan pertaining to awards for which the grantee has gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares, other instruments, or cash in accordance with the terms of the arrangement.

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The total fair value of share-based awards for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares, other instruments, or cash in accordance with the terms of the arrangement.

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The weighted average fair value as of grant dates pertaining to a share-based award plan other than a stock option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares, other instruments, or cash in accordance with the terms of the arrangement.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The period of time a share-based award is expected to be outstanding. A share-based award's expected term shall be determined based on, among other factors, the instrument's contractual term and the effects of employees' expected exercise and post-vesting employment termination behavior. An entity is required to aggregate individual awards into relatively homogeneous groups.

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The estimated measure of the percentage amount by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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For each plan, identification of the award pricing model or other valuation method used in calculating the weighted average fair values disclosed. The model is also used to calculate the compensation expense that is shown within the balance sheet, income statement, and cash flow. Examples of valuation techniques are lattice models (binomial model), closed-form models (Black-Scholes-Merton formula), and a Monte Carlo simulation technique. Fair value is the amount at which an asset (or liability) could be bought (or incurred) or sold (or settled) in a current transaction between willing parties, that is, other than in a forced or liquidation sale. May include disclosures about the assumptions underlying application of the method selected.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices of vested portions of options outstanding and currently exercisable under the option plan as of the balance-sheet date.

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The number of shares into which fully or partially vested stock options outstanding as of the balance-sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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The weighted average period between the balance-sheet date and expiration for all vested portions of options outstanding and currently exercisable (or convertible) under the plan, which may be expressed in a decimal value for number of years.

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The decrease in the number of reserved shares that could potentially be issued attributable to the exercise or conversion during the reporting period of previously issued stock options under the option plan.

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The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan.

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The weighted average price at which option holders acquired shares when converting their stock options into shares under the plan during the reporting period.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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For presentations that combine terminations, the weighted average price of expired options and the price at which grantees could have acquired the underlying shares with respect to stock options that were terminated during the reporting period due to noncompliance with plan terms during the reporting period .

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The quantity of shares issuable on stock options awarded under the plan during the reporting period.

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The weighted average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on stock options awarded under the plan during the reporting period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices pertaining to options outstanding under the plan as of the balance-sheet date.

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance-sheet date, including vested options.

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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph b(1)(b)

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The weighted average price as of the beginning of the year at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph b(1)(a)

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The weighted average period between the balance-sheet date and expiration for all awards outstanding under the plan, which may be expressed in a decimal value for number of years.

+ References

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