DERIVATIVES FINANCIAL INSTRUMENTS (Details) - USD ($) $ in Millions	12 Months Ended
May. 31, 2015	May. 31, 2014
Fair Values of Derivative and Non-Derivative Instruments Designated as Hedges in Consolidated Balance Sheets [Abstract]
Fair value, assets	$ 74	$ 97
Fair value, liabilities	(244)
2.25% senior notes due January 2021 [Member]
Debt Instruments [Abstract]
Senior notes fixed principal amount	$ 1,600
Annual interest rate for the 2.25% notes due January 2021 after the economic effect of the cross-currency swaps	3.53%
Interest rate swap agreements [Member] \| Interest expense [Member]
Effects of Derivative and Non-Derivative Instruments Designated as Hedges on Income and Other Comprehensive Income (OCI) or Loss (OCL) [Abstract]
Amount of Gain (Loss) Recognized in Income on Derivative	$ 51	(18)
Amount of (Loss) Gain on Hedged Item Recognized in Income Attributable to Risk Being Hedged	(51)	18
Cash flow hedges [Member] \| Cross-currency swap agreements [Member]
Effects of Derivative and Non-Derivative Instruments Designated as Hedges on Income and Other Comprehensive Income (OCI) or Loss (OCL) [Abstract]
Amount of (Loss) Gain Recognized in Accumulated OCI or OCL (Effective Portion)	(318)	74
Derivative Instrument Detail [Abstract]
Amount of ineffectiveness measured	0	0
Cash flow hedges [Member] \| Cross-currency swap agreements [Member] \| 2.25% senior notes due January 2021 [Member]
Debt Instruments [Abstract]
Senior notes fixed principal amount	$ 1,600
Annual interest rate for the 2.25% notes due January 2021 after the economic effect of the cross-currency swaps	3.53%
Cash flow hedges [Member] \| Cross-currency swap agreements [Member] \| Non-operating income (expense), net [Member]
Effects of Derivative and Non-Derivative Instruments Designated as Hedges on Income and Other Comprehensive Income (OCI) or Loss (OCL) [Abstract]
Amount of (Loss) Gain Reclassified from Accumulated OCI or OCL into Income (Effective Portion)	$ (348)	69
Cash flow hedges [Member] \| Cross-currency swap agreements [Member] \| Other assets [Member]
Fair Values of Derivative and Non-Derivative Instruments Designated as Hedges in Consolidated Balance Sheets [Abstract]
Fair value, assets		74
Cash flow hedges [Member] \| Cross-currency swap agreements [Member] \| Other non-current liabilities [Member]
Fair Values of Derivative and Non-Derivative Instruments Designated as Hedges in Consolidated Balance Sheets [Abstract]
Fair value, liabilities	(244)
Net investment hedge [Member] \| Foreign currency borrowings [Member]
Effects of Derivative and Non-Derivative Instruments Designated as Hedges on Income and Other Comprehensive Income (OCI) or Loss (OCL) [Abstract]
Amount of (Loss) Gain Recognized in Accumulated OCI or OCL (Effective Portion)	208	(34)
Derivative Instrument Detail [Abstract]
Amount of ineffectiveness measured	0	0
Net investment hedge [Member] \| Foreign currency borrowings [Member] \| Notes payable, non-current [Member]
Fair Values of Derivative and Non-Derivative Instruments Designated as Hedges in Consolidated Balance Sheets [Abstract]
Fair value, debt	(981)	(1,116)
Fair value hedges [Member] \| Interest rate swap agreements [Member] \| Other assets [Member]
Fair Values of Derivative and Non-Derivative Instruments Designated as Hedges in Consolidated Balance Sheets [Abstract]
Fair value, assets	$ 74	15
Fair value hedges [Member] \| Interest rate swap agreements [Member] \| Prepaid expenses and other current assets [Member]
Fair Values of Derivative and Non-Derivative Instruments Designated as Hedges in Consolidated Balance Sheets [Abstract]
Fair value, assets		$ 8

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Amount of the increase (decrease) in fair value of the hedged item in a fair value hedge recognized in the income statement.

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Fixed interest rate related to the interest rate derivative.

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

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Amount of gain (loss) from the ineffectiveness of the hedge.

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Total amount of gain (loss) derived from fair value hedges recognized in earnings in the period.

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