NOTES PAYABLE AND OTHER BORROWINGS Narrative (Details)	12 Months Ended
May 31, 2011
Long term notes payable (Narrative) [Abstract]
Debt-related covenants	We were in compliance with all debt-related covenants at May 31, 2011.
Revolving Credit Agreement	On May 27, 2011, we entered into two Revolving Credit Agreements with BNP Paribas, as initial lender and administrative agent; and BNP Paribas Securities Corp., as sole lead arranger and sole bookrunner (the 2011 Credit Agreements) to borrow $1.15 billion pursuant these agreements. The 2011 Credit Agreements provided us with short-term borrowings for working capital and other general corporate purposes. Interest for the 2011 Credit Agreements is based on either (x) a “base rate” calculated as the highest of (I) BNP Paribas’s prime rate, (II) the federal funds effective rate plus 0.50% and (III) the LIBOR for deposits in U.S. dollars plus 1% or (y) LIBOR for deposits made in U.S. dollars plus 0.25%, depending on the type of borrowings made by us. Any amounts borrowed pursuant to the 2011 Credit Agreements are due no later than June 30, 2011, the termination date of these credit agreements.

Description of the credit facility's borrowing capacity including discussion of how the borrowing capacity is determined (for example, borrowing capacity based on the amount of current assets).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 2, 4

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 22
-Article 5

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