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)								15
Stock options exercised	657	657
Conversion to Class B Common Stock (in shares)						(10)		10
Conversion to Class B Common Stock	0
Dividends on common stock and preferred stock	(820)			(820)
Issuance of shares to employees, net of shares withheld for employee taxes (in shares)								2
Issuance of shares to employees, net of shares withheld for employee taxes	27	55		(28)
Stock-based compensation	325	325
Net income	2,769			2,769
Other comprehensive income (loss)	(373)		(373)
Ending Balance (in shares) at Nov. 30, 2020						305		1,270
Ending balance at Nov. 30, 2020	10,640	9,336	(429)	1,730		$ 0		$ 3
Beginning Balance (in shares) at Aug. 31, 2020						315		1,250
Beginning balance at Aug. 31, 2020	9,224	8,695	(401)	927		$ 0		$ 3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock options exercised (in shares)								8
Stock options exercised	366	366
Conversion to Class B Common Stock (in shares)						(10)		10
Dividends on common stock and preferred stock	(437)			(437)
Issuance of shares to employees, net of shares withheld for employee taxes (in shares)								2
Issuance of shares to employees, net of shares withheld for employee taxes	75	86		(11)
Stock-based compensation	189	189
Net income	1,251			1,251
Other comprehensive income (loss)	(28)		(28)
Ending Balance (in shares) at Nov. 30, 2020						305		1,270
Ending balance at Nov. 30, 2020	10,640	9,336	(429)	1,730		$ 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)								13
Stock options exercised	725	725
Repurchase of Class B Common Stock (in shares)								(11)
Repurchase of Class B common stock	(1,710)	(69)		(1,641)
Dividends on common stock and preferred stock	(918)			(918)
Issuance of shares to employees, net of shares withheld for employee taxes (in shares)								3
Issuance of shares to employees, net of shares withheld for employee taxes	18	63		(45)
Stock-based compensation	306	306
Net income	3,211			3,211
Other comprehensive income (loss)	525		525
Ending Balance (in shares) at Nov. 30, 2021					305	305	1,278	1,278
Ending balance at Nov. 30, 2021	14,924	10,990	145	3,786		$ 0		$ 3
Beginning Balance (in shares) at Aug. 31, 2021						305		1,278
Beginning balance at Aug. 31, 2021	14,343	10,521	(67)	3,886		$ 0		$ 3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock options exercised (in shares)								3
Stock options exercised	256	256
Repurchase of Class B Common Stock (in shares)								(6)
Repurchase of Class B common stock	(968)	(40)		(928)
Dividends on common stock and preferred stock	(483)			(483)
Issuance of shares to employees, net of shares withheld for employee taxes (in shares)								3
Issuance of shares to employees, net of shares withheld for employee taxes	57	83		(26)
Stock-based compensation	170	170
Net income	1,337			1,337
Other comprehensive income (loss)	212		212
Ending Balance (in shares) at Nov. 30, 2021					305	305	1,278	1,278
Ending balance at Nov. 30, 2021	$ 14,924	$ 10,990	$ 145	$ 3,786		$ 0		$ 3