v3.2.0.727

Income Taxes (Details 3) - USD ($) $ in Millions	12 Months Ended
Income Taxes (Details 3) - USD ($) $ in Millions	May. 31, 2015	May. 31, 2014	May. 31, 2013
Effective Income Tax Rate Continuing Operations Tax Rate Reconciliation [Abstract]
Statutory U.S. income tax rate	35.00%	35.00%	35.00%
Effective Tax Rate	19.80%	34.50%	37.70%
IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract
Taxes computed at federal statutory rate	$ 63	$ 460	$ 598
State and local income taxes, net of federal benefit	(5)	24	44
Foreign operations	(31)	(38)	(24)
U.S. federal income tax credits	(5)	(4)	(3)
Non-deductible items	20	17	29
Other, net	(7)	(6)
Provision for Income Taxes	$ 35	$ 453	$ 644

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign income tax expense (benefit).

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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