SEGMENT INFORMATION Continued (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013		May 31, 2012		May 31, 2011
Reconciliation of Total Operating Segment Margin to Income Before Provision for Income Taxes [Abstract]
Total margin for operating segments	$ 23,981	[1]	$ 23,405	[1]	$ 22,044	[1]
New software licenses and cloud software subscriptions revenues	(45)	[2]	(22)	[2]
Software license updates and product support revenues	(14)	[2]	(48)	[2]	(80)	[2]
Hardware systems support revenues	(14)	[2]	(30)	[2]	(148)	[2]
Product development	(4,321)		(4,050)		(4,089)
Marketing and partner program expenses	(591)		(581)		(601)
Corporate, general and administrative and information technology expenses	(1,417)		(1,491)		(1,404)
Amortization of intangible assets	(2,385)		(2,430)		(2,428)
Acquisition related and other	604		(56)		(208)
Restructuring	(352)		(295)		(487)
Stock-based compensation	(722)		(626)		(500)
Interest expense	(797)		(766)		(808)
Other, net	(29)		(48)		120
Income before provision for income taxes	13,898		12,962		11,411
Reconciliation of Total Operating Segment Revenues to Total Revenues [Abstract]
Total revenues for operating segments	37,253	[3]	37,221	[3]	35,850	[3]
New software licenses and cloud software subscriptions revenues	(45)	[2]	(22)	[2]
Software license updates and product support revenues	(14)	[2]	(48)	[2]	(80)	[2]
Hardware systems support revenues	(14)	[2]	(30)	[2]	(148)	[2]
Total revenues	$ 37,180		$ 37,121		$ 35,622

[1] The margins reported reflect only the direct controllable costs of each line of business and do not include allocations of product development, marketing and partner programs, and corporate, general and administrative and information technology expenses. Additionally, the margins do not reflect amortization of intangible assets, acquisition related and other expenses, restructuring expenses, stock-based compensation, interest expense or certain other expenses, net.

[2] New software licenses and cloud software subscriptions revenues for management reporting included revenues related to cloud software subscriptions contracts that would have otherwise been recorded by the acquired businesses as independent entities but were not recognized in the accompanying consolidated statements of operations in the amounts of $45 million and $22 million for fiscal 2013 and 2012, respectively. Software license updates and product support revenues for management reporting included revenues related to software support contracts that would have otherwise been recorded by the acquired businesses as independent entities but were not recognized in the accompanying consolidated statements of operations in the amounts of $14 million, $48 million and $80 million for fiscal 2013, 2012 and 2011, respectively. In addition, we did not recognize hardware systems support revenues related to hardware systems support contracts that would have otherwise been recorded by the acquired businesses as independent entities in the amounts of $14 million, $30 million and $148 million for fiscal 2013, 2012 and 2011, respectively. See Note 10 for an explanation of these adjustments.

[3] Operating segment revenues generally differ from the external reporting classifications due to certain software license products that are classified as service revenues for management reporting purposes. New software licenses and cloud software subscriptions revenues for management reporting included revenues related to cloud software subscriptions contracts that would have otherwise been recorded by the acquired businesses as independent entities but were not recognized in the accompanying consolidated statements of operations in the amounts of $45 million and $22 million for fiscal 2013 and 2012, respectively. Software license updates and product support revenues for management reporting included revenues related to software support contracts that would have otherwise been recorded by the acquired businesses as independent entities but were not recognized in the accompanying consolidated statements of operations in the amounts of $14 million, $48 million and $80 million for fiscal 2013, 2012 and 2011, respectively. In addition, we did not recognize hardware systems support revenues related to hardware systems support contracts that would have otherwise been recorded by the acquired businesses as independent entities in the amounts of $14 million, $30 million and $148 million for fiscal 2013, 2012 and 2011, respectively. See Note 10 for an explanation of these adjustments and the table below for a reconciliation of our total operating segment revenues to our total revenues.