SEGMENT INFORMATION Continued (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Nov. 30, 2012		Nov. 30, 2011		Nov. 30, 2012		Nov. 30, 2011
Reconciliation of Total Operating Segment Margin to Income Before Provision for Income Taxes [Abstract]
Total margin for operating segments	$ 5,863	[1]	$ 5,471	[1]	$ 11,048	[1]	$ 10,527	[1]
New software licenses and cloud software subscriptions revenues	(12)	[2]			(31)	[2]
Software license updates and product support revenues	(4)	[2]	(10)	[2]	(8)	[2]	(24)	[2]
Hardware systems support revenues	(3)	[2]	(9)	[2]	(8)	[2]	(19)	[2]
Product development and information technology expenses	(1,228)		(1,134)		(2,459)		(2,210)
Marketing and partner program expenses	(162)		(156)		(290)		(288)
Corporate and general and administrative expenses	(216)		(230)		(442)		(499)
Amortization of intangible assets	(584)		(592)		(1,203)		(1,184)
Acquisition related and other	121		(5)		380		(25)
Restructuring	(131)		(52)		(276)		(154)
Stock-based compensation	(188)		(150)		(365)		(295)
Interest expense	(195)		(192)		(382)		(384)
Other, net	19		19		18		(14)
Income before provision for income taxes	3,280		2,960		5,982		5,431
Reconciliation of Total Operating Segment Revenues to Total Revenues [Abstract]
Total revenues for operating segments	9,113	[3]	8,811	[3]	17,322	[3]	17,209	[3]
New software licenses and cloud software subscriptions revenues	(12)	[2]			(31)	[2]
Software license updates and product support revenues	(4)	[2]	(10)	[2]	(8)	[2]	(24)	[2]
Hardware systems support revenues	(3)	[2]	(9)	[2]	(8)	[2]	(19)	[2]
Total revenues	$ 9,094		$ 8,792		$ 17,275		$ 17,166

[1] The margins reported reflect only the direct controllable costs of each line of business and do not include allocations of product development, information technology, marketing and partner programs and corporate and general and administrative 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 condensed consolidated statements of operations in the amounts of $12 million and $31 million for the three and six months ended November 30, 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 condensed consolidated statements of operations in the amounts of $4 million and $10 million for the three months ended November 30, 2012 and 2011, respectively, and $8 million and $24 million for the six months ended November 30, 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 $3 million and $9 million for the three months ended November 30, 2012 and 2011, respectively, and $8 million and $19 million for the six months ended November 30, 2012 and 2011, respectively.

[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 condensed consolidated statements of operations in the amounts of $12 million and $31 million for the three and six months ended November 30, 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 condensed consolidated statements of operations in the amounts of $4 million and $10 million for the three months ended November 30, 2012 and 2011, respectively, and $8 million and $24 million for the six months ended November 30, 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 $3 million and $9 million for the three months ended November 30, 2012 and 2011, respectively, and $8 million and $19 million for the six months ended November 30, 2012 and 2011, respectively. See Note 8 for an explanation of these adjustments and the table below for a reconciliation of our total operating segment revenues to our total revenues.