STOCKHOLDERS' EQUITY (Tables)

9 Months Ended

Feb. 28, 2017

Stockholders Equity Note [Abstract]

Stock-Based Compensation Expense

	Three Months Ended				Nine Months Ended
(in millions)	February 28, 2017		February 29, 2016		February 28, 2017		February 29, 2016
Sales and marketing	$	96	$	57	$	228	$	163
Cloud software as a service and platform as a service		6		4		17		13
Cloud infrastructure as a service		1		1		3		3
Software license updates and product support		6		6		18		18
Hardware products		2		1		6		4
Hardware support		1		1		3		4
Services		14		7		31		22
Research and development		191		154		574		452
General and administrative		32		29		104		86
Acquisition related and other		22	—			33		3
Total stock-based compensation	$	371	$	260	$	1,017	$	768