Unaudited Condensed Consolidated Statements of Shareholders' Equity - USD ($) shares in Millions, $ in Millions	Total	CAPITAL IN EXCESS OF STATED VALUE	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	RETAINED EARNINGS (DEFICIT)	Class A Common Stock	Class A Common Stock COMMON STOCK	Class B Common Stock	Class B Common Stock COMMON STOCK
Beginning Balance (in shares) at May. 31, 2020						315		1,243
Beginning balance at May. 31, 2020	$ 8,055	$ 8,299	$ (56)	$ (191)		$ 0		$ 3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock options exercised (in shares)								7
Stock options exercised	291	291
Dividends on common stock and preferred stock	(383)			(383)
Issuance of shares to employees, net of shares withheld for employee taxes	(48)	(31)		(17)
Stock-based compensation	136	136
Net income	1,518			1,518
Other comprehensive income (loss)	(345)		(345)
Ending Balance (in shares) at Aug. 31, 2020						315		1,250
Ending balance at Aug. 31, 2020	9,224	8,695	(401)	927		$ 0		$ 3
Beginning Balance (in shares) at May. 31, 2021					305	305	1,273	1,273
Beginning balance at May. 31, 2021	12,767	9,965	(380)	3,179		$ 0		$ 3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock options exercised (in shares)								10
Stock options exercised	469	469
Repurchase of Class B Common Stock (in shares)								(5)
Repurchase of Class B common stock	(742)	(29)		(713)
Dividends on common stock and preferred stock	(435)			(435)
Issuance of shares to employees, net of shares withheld for employee taxes	(39)	(20)		(19)
Stock-based compensation	136	136
Net income	1,874			1,874
Other comprehensive income (loss)	313		313
Ending Balance (in shares) at Aug. 31, 2021					305	305	1,278	1,278
Ending balance at Aug. 31, 2021	$ 14,343	$ 10,521	$ (67)	$ 3,886		$ 0		$ 3