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, 2023						305		1,227
Beginning Balance at May. 31, 2023	$ 14,004	$ 12,412	$ 231	$ 1,358				$ 3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock options exercised (in shares)								6
Stock options exercised	347	347
Conversion to Class B Common Stock (in shares)						(7)		7
Repurchase of Class B Common Stock (in shares)								(30)
Repurchase of Class B Common Stock	(3,207)	(251)		(2,956)
Dividends on common stock and preferred stock	(1,645)			(1,645)
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	15	2		13
Stock-based compensation	618	618
Net income	4,200			4,200
Other comprehensive income (loss)	(106)		(106)
Ending Balance (in shares) at Feb. 29, 2024						298		1,213
Ending Balance at Feb. 29, 2024	14,226	13,128	125	970				$ 3
Beginning Balance (in shares) at Nov. 30, 2023						298		1,219
Beginning Balance at Nov. 30, 2023	14,146	12,871	121	1,151				$ 3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock options exercised (in shares)								2
Stock options exercised	135	135
Repurchase of Class B Common Stock (in shares)								(8)
Repurchase of Class B Common Stock	(866)	(67)		(799)
Dividends on common stock and preferred stock	(561)			(561)
Issuance of shares to employees, net of shares withheld for employee taxes	(20)	(27)		7
Stock-based compensation	216	216
Net income	1,172			1,172
Other comprehensive income (loss)	4		4
Ending Balance (in shares) at Feb. 29, 2024						298		1,213
Ending Balance at Feb. 29, 2024	14,226	13,128	125	970				$ 3
Beginning Balance (in shares) at May. 31, 2024					298	298	1,205	1,205
Beginning Balance at May. 31, 2024	14,430	13,409	53	965				$ 3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock options exercised (in shares)								5
Stock options exercised	274	274
Repurchase of Class B Common Stock (in shares)								(34)
Repurchase of Class B Common Stock	(2,753)	(311)		(2,442)
Dividends on common stock and preferred stock	(1,745)			(1,745)
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	39			39
Stock-based compensation	544	544
Net income	3,008			3,008
Other comprehensive income (loss)	210		210
Ending Balance (in shares) at Feb. 28, 2025					298	298	1,179	1,179
Ending Balance at Feb. 28, 2025	14,007	13,916	263	(175)				$ 3
Beginning Balance (in shares) at Nov. 30, 2024						298		1,184
Beginning Balance at Nov. 30, 2024	14,037	13,778	202	54				$ 3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock options exercised (in shares)								1
Stock options exercised	55	55
Repurchase of Class B Common Stock (in shares)								(6)
Repurchase of Class B Common Stock	(499)	(60)		(439)
Dividends on common stock and preferred stock	(594)			(594)
Issuance of shares to employees, net of shares withheld for employee taxes	(16)	(26)		10
Stock-based compensation	169	169
Net income	794			794
Other comprehensive income (loss)	61		61
Ending Balance (in shares) at Feb. 28, 2025					298	298	1,179	1,179
Ending Balance at Feb. 28, 2025	$ 14,007	$ 13,916	$ 263	$ (175)				$ 3