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)								21
Stock options exercised	954	954
Conversion to Class B Common Stock (in shares)						(10)		10
Repurchase of Class B Common Stock (in shares)								(5)
Repurchase of Class B Common Stock	(650)	(28)		(622)
Dividends on common stock and preferred stock	(1,692)			(1,692)
Issuance of shares to employees, net of shares withheld for employee taxes (in shares)								4
Issuance of shares to employees, net of shares withheld for employee taxes	86	129		(43)
Stock-based compensation	611	611
Net income	5,727			5,727
Other comprehensive income (loss)	(324)		(324)
Ending balance (in shares) at May. 31, 2021						305		1,273
Ending 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)								17
Stock options exercised	924	924
Repurchase of Class B Common Stock (in shares)								(27)
Repurchase of Class B Common Stock	(3,994)	(186)		(3,808)
Dividends on common stock and preferred stock	(1,886)			(1,886)
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	88	143		(55)
Stock-based compensation	638	638
Net income	6,046			6,046
Other comprehensive income (loss)	698		698
Ending balance (in shares) at May. 31, 2022					305	305	1,266	1,266
Ending balance at May. 31, 2022	15,281	11,484	318	3,476		$ 0		$ 3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock options exercised (in shares)								8
Stock options exercised	421	421
Repurchase of Class B Common Stock (in shares)								(51)
Repurchase of Class B Common Stock	(5,509)	(378)		(5,131)
Dividends on common stock and preferred stock	(2,059)			(2,059)
Issuance of shares to employees, net of shares withheld for employee taxes (in shares)								4
Issuance of shares to employees, net of shares withheld for employee taxes	132	130		2
Stock-based compensation	755	755
Net income	5,070			5,070
Other comprehensive income (loss)	(87)		(87)
Ending balance (in shares) at May. 31, 2023					305	305	1,227	1,227
Ending balance at May. 31, 2023	$ 14,004	$ 12,412	$ 231	$ 1,358		$ 0		$ 3