INCOME TAXES Narrative (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2012	May 31, 2011	May 31, 2010
Deferred Tax Assets and Liabilities (Narrative) [Abstract]
Temporary differences related to undistributed foreign earnings	$ 20,900
Other outside basis temporary differences of investments in foreign subsidiaries	4,300
Potential net deferred tax liability associated with these undistributed foreign earnings	6,300
Potential net deferred tax liability related to other outside basis temporary differences	1,400
Net deferred tax assets	1,396	2,105
Valuation allowance	728	772
Operating loss carryforwards [Line Items]
Tax credit carryforwards subject to limitation on utilization	1,000
Tax credit carryforwards not subject to expiration dates	346
Tax credit carryforwards subject to expiration dates	691
Tax credit carryforward expiration dates	between fiscal 2013 and fiscal 2029
Unrecognized Tax Benefits (Narrative) [Abstract]
Unrecognized tax benefits that would affect our effective tax rate, if recognized	3,300
Interest and penalties related to uncertain tax positions recognized in our provision for income taxes	46	22	3
Interest and penalties related to uncertain tax positions accrued	683	669
Reasonably possible decrease in the next 12 months in gross unrecognized tax benefits related to domestic audits	518
Reasonably possible decrease in the next 12 months in gross unrecognized tax benefits related to domestic audits, net of offsetting tax benefits	423
Reasonably possible decrease in the next 12 months in gross unrecognized tax benefits related to foreign audits	189
Reasonably possible decrease in gross unrecognized tax benefits related to foreign audits, net of offsetting tax benefits	123
Federal [Member]
Operating loss carryforwards [Line Items]
Net operating loss carryforwards	726
Operating loss carrforwards expiration dates	between fiscal 2016 and fiscal 2031
State [Member]
Operating loss carryforwards [Line Items]
Net operating loss carryforwards	2,900
Operating loss carrforwards expiration dates	between fiscal 2013 and fiscal 2031
Foreign [Member]
Operating loss carryforwards [Line Items]
Net operating loss carryforwards	1,800
Operating loss carrforwards expiration dates	between fiscal 2013 and fiscal 2032
Foreign net operating loss carryforwards not subject to expiration	1,500
Foreign net operating loss carryforwards subject to expiration	$ 302