Retirement Plans (Details 7) (USD $) In Millions	May 31, 2011	May 31, 2010
Qualified [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation ("ABO")	$ 16,024	$ 13,311
Projected Benefit Obligation ("PBO")	16,445	13,635
Fair Value of Plan Assets	15,518	13,055
Funded Status of the Plans	(927)	(580)
Nonqualified [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation ("ABO")	335	346
Projected Benefit Obligation ("PBO")	339	348
Funded Status of the Plans	(339)	(348)
International Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation ("ABO")	447	384
Projected Benefit Obligation ("PBO")	588	501
Fair Value of Plan Assets	323	240
Funded Status of the Plans	(265)	(261)
Components Total [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation ("ABO")	16,806	14,041
Projected Benefit Obligation ("PBO")	17,372	14,484
Fair Value of Plan Assets	15,841	13,295
Funded Status of the Plans	$ (1,531)	$ (1,189)

The actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. The projected benefit obligation is measured using assumptions as to future compensation levels if the pension benefit formula is based on those future compensation levels (pay-related, final-pay, final-average-pay, or career-average-pay plans).

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- Definition

For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph e

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ Details

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- Definition

Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those nonbenefit obligations may be considered as reductions of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph b

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph d(iv)(b)(i)

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 87
-Paragraph 49

+ Details

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- Definition

The funded status is measured as the difference between the fair value of plan assets and the benefit obligation. Will normally be the same as the net Defined Benefit Plan, Amounts Recognized in Balance Sheet, Total.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph c

+ Details

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