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VALUATION AND QUALIFYING ACCOUNTS (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Allowances for Doubtful Trade Receivables [Abstract]
Beginning Balance	$ 323	$ 372	$ 305
Additions Charged to Operations or Other Accounts	118	92	164
Write-offs	(167)	(107)	(113)
Translation Adjustments and Other	22	(34)	16
Ending Balance	$ 296	$ 323	$ 372

Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected).

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