CONSOLIDATED STATEMENTS OF EQUITY - USD ($) shares in Millions, $ in Millions	Total	Common Stock and Additional Paid in Capital	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Loss	Total Oracle Corporation Stockholders' Equity	Noncontrolling Interests
Balances at May. 31, 2016	$ 47,790	$ 24,217	$ 23,888	$ (816)	$ 47,289	$ 501
Beginning common stock shares outstanding at May. 31, 2016	4,131.0
Cumulative-effect of accounting change	$ 781	0	820	(43)	777	4
Common stock issued under stock-based compensation plans	$ 2,063	2,063	0	0	2,063	0
Common stock issued under stock-based compensation plans, Shares	95.0
Common stock issued under stock purchase plans	$ 118	118	0	0	118	0
Common stock issued under stock purchase plans, Shares	3.0
Assumption of stock-based compensation plan awards in connection with acquisitions	$ 90	90	0	0	90	0
Stock-based compensation	1,350	1,350	0	0	1,350	0
Repurchase of common stock	$ (3,492)	(504)	(2,988)	0	(3,492)	0
Repurchase of common stock, Shares	(85.6)
Shares repurchased for tax withholdings upon vesting of restricted stock-based awards	$ (283)	(283)	0	0	(283)	0
Shares repurchased for tax withholdings upon vesting of restricted stock-based awards, Shares	(6.0)
Cash dividends declared	$ (2,631)	0	(2,631)	0	(2,631)	0
Other, net	(239)	14	(6)	0	8	(247)
Other comprehensive (loss) income, net	13	0	0	(1)	(1)	14
Net income	9,570	0	9,452	0	9,452	118
Balances at May. 31, 2017	$ 55,130	27,065	28,535	(860)	54,740	390
Ending common stock shares outstanding at May. 31, 2017	4,137.0
Common stock issued under stock-based compensation plans	$ 2,277	2,277	0	0	2,277	0
Common stock issued under stock-based compensation plans, Shares	105.0
Common stock issued under stock purchase plans	$ 125	125	0	0	125	0
Common stock issued under stock purchase plans, Shares	3.0
Assumption of stock-based compensation plan awards in connection with acquisitions	$ 3	3	0	0	3	0
Stock-based compensation	1,607	1,607	0	0	1,607	0
Repurchase of common stock	$ (11,503)	(1,632)	(9,871)	0	(11,503)	0
Repurchase of common stock, Shares	(238.0)
Shares repurchased for tax withholdings upon vesting of restricted stock-based awards	$ (506)	(506)	0	0	(506)	0
Shares repurchased for tax withholdings upon vesting of restricted stock-based awards, Shares	(10.0)
Cash dividends declared	$ (3,140)	0	(3,140)	0	(3,140)	0
Other, net	(13)	11	0	0	11	(24)
Other comprehensive (loss) income, net	(829)	0	0	(829)	(829)	0
Net income	3,722	0	3,587	0	3,587	135
Balances at May. 31, 2018	$ 46,873	28,950	19,111	(1,689)	46,372	501
Ending common stock shares outstanding at May. 31, 2018	3,997.0
Cumulative-effect of accounting change	$ (110)	0	(110)	0	(110)	0
Common stock issued under stock-based compensation plans	$ 2,033	2,033	0	0	2,033	0
Common stock issued under stock-based compensation plans, Shares	103.0
Common stock issued under stock purchase plans	$ 122	122	0	0	122	0
Common stock issued under stock purchase plans, Shares	2.0
Assumption of stock-based compensation plan awards in connection with acquisitions	$ 8	8	0	0	8	0
Stock-based compensation	1,653	1,653	0	0	1,653	0
Repurchase of common stock	$ (36,000)	(5,354)	(30,646)	0	(36,000)	0
Repurchase of common stock, Shares	(733.8)
Shares repurchased for tax withholdings upon vesting of restricted stock-based awards	$ (503)	(503)	0	0	(503)	0
Shares repurchased for tax withholdings upon vesting of restricted stock-based awards, Shares	(9.0)
Cash dividends declared	$ (2,932)	0	(2,932)	0	(2,932)	0
Other, net	(71)	0	(2)	0	(2)	(69)
Other comprehensive (loss) income, net	55	0	0	61	61	(6)
Net income	11,235	0	11,083	0	11,083	152
Balances at May. 31, 2019	$ 22,363	$ 26,909	$ (3,496)	$ (1,628)	$ 21,785	$ 578
Ending common stock shares outstanding at May. 31, 2019	3,359.0