ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES Narrative (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Concentrations of Credit Risk [Abstract]
Customer Concentrations	No single customer accounted for 10% or more of our total revenues in fiscal 2013.	No single customer accounted for 10% or more of our total revenues in fiscal 2012.	No single customer accounted for 10% or more of our total revenues in fiscal 2011.
Goodwill, Intangible Assets and Impairment Assessments [Abstract]
Goodwill and Intangible Assets Impairment	$ 0	$ 0	$ 0
Property, Plant and Equipment (Impairment Assessments) [Abstract]
Impairment of Property, Plant and Equipment	We did not recognize any significant property impairment charges in fiscal 2013.	We did not recognize any significant property impairment charges in fiscal 2012.	We did not recognize any significant property impairment charges in fiscal 2011.
Research and Development and Software Development Costs [Abstract]
Research and Development and Software Development Costs	Software development costs required to be capitalized under ASC 985-20, Costs of Software to be Sold, Leased or Marketed, and under ASC 350-40, Internal-Use Software, were not material to our consolidated financial statements in fiscal 2013.	Software development costs required to be capitalized under ASC 985-20, Costs of Software to be Sold, Leased or Marketed, and under ASC 350-40, Internal-Use Software, were not material to our consolidated financial statements in fiscal 2012.	Software development costs required to be capitalized under ASC 985-20, Costs of Software to be Sold, Leased or Marketed, and under ASC 350-40, Internal-Use Software, were not material to our consolidated financial statements in fiscal 2011.