STOCKHOLDERS' EQUITY (Tables)

6 Months Ended

Nov. 30, 2016

Stockholders Equity Note [Abstract]

Stock-Based Compensation Expense

	Three Months Ended November 30,				Six Months Ended November 30,
(in millions)	2016		2015		2016		2015
Sales and marketing	$	68	$	55	$	133	$	107
Cloud software as a service and platform as a service		6		4		11		8
Cloud infrastructure as a service		1		1		2		2
Software license updates and product support		6		6		12		12
Hardware products		2		2		4		3
Hardware support		1		1		2		3
Services		9		7		17		14
Research and development		188		151		382		298
General and administrative		35		27		72		57
Acquisition related and other		11	—			11		3
Total stock-based compensation	$	327	$	254	$	646	$	507