STOCKHOLDERS' EQUITY (Tables)

3 Months Ended

Aug. 31, 2012

Stockholders' Equity [Abstract]

Stock-Based Compensation Expense

	Three Months Ended August 31,
(in millions)	2012		2011
Sales and marketing	$	37	$	26
Software license updates and product support		5		4
Hardware systems products		—		1
Hardware systems support		1		1
Services		9		4
Research and development		83		71
General and administrative		41		40
Acquisition related and other		17		1
Total stock-based compensation	$	193	$	148

Valuation of Stock Options

		Three Months Ended August 31,
	2012		2011
Expected life (in years)		5.1		5.2
Risk-free interest rate		0.7%		1.7%
Volatility		32%		30%
Dividend yield		0.8%		0.7%
Weighted-average fair value per share	$	7.83	$	8.78