Retirement Plans (Details 7) - USD ($) $ in Millions	May. 31, 2015	May. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	$ 23,006	$ 21,444
Qualified [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected Benefit Obligation ("PBO")	26,365	23,439
Fair Value of Plan Assets	23,006	21,444
Funded Status of the Plans	(3,359)	(1,995)
Nonqualified [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected Benefit Obligation ("PBO")	271	280
Funded Status of the Plans	(271)	(280)
International Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected Benefit Obligation ("PBO")	876	859
Fair Value of Plan Assets	499	463
Funded Status of the Plans	(377)	(396)
Components Total [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected Benefit Obligation ("PBO")	27,512	24,578
Fair Value of Plan Assets	23,505	21,907
Funded Status of the Plans	$ (4,007)	$ (2,671)

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).

No definition available.

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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.

+ References

No definition available.

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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 non-benefit obligations may be considered as reductions of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 30

-Section 35

-Paragraph 50

-URI http://asc.fasb.org/extlink&oid=29635418&loc=d3e12355-114930

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920

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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 Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=21915240&loc=d3e1703-114919

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