STOCKHOLDERS' EQUITY (Tables)

9 Months Ended

Feb. 28, 2013

Stockholders' Equity [Abstract]

Stock-Based Compensation Expense

	Three Months Ended				Nine Months Ended
(in millions)	February 28, 2013		February 29, 2012		February 28, 2013		February 29, 2012
Sales and marketing	$	32	$	30	$	112	$	86
Software license updates and product support		5		5		15		13
Hardware systems products		1		—		2		1
Hardware systems support		1		1		3		4
Services		7		6		24		16
Research and development		86		74		258		213
General and administrative		40		41		122		120
Acquisition related and other		8		18		30		21
Total stock-based compensation	$	180	$	175	$	566	$	474

Valuation of Stock Options

	Three Months Ended				Nine Months Ended
	February 28, 2013		February 29, 2012		February 28, 2013		February 29, 2012
Expected life (in years)		4.7		4.7		5.1		5.1
Risk-free interest rate		0.7%		0.8%		0.7%		1.6%
Volatility		26%		32%		31%		30%
Dividend yield		0.7%		0.8%		0.8%		0.7%
Weighted-average fair value per share	$	7.00	$	15.52	$	7.97	$	9.33