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)				$ 3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock options exercised (in shares)								19
Stock options exercised	844	844
Conversion to Class B Common Stock (in shares)						(10)		10
Dividends on common stock and preferred stock	(1,256)			(1,256)
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	(7)	35		(42)
Stock-based compensation	467	467
Net income	4,218			4,218
Other comprehensive income (loss)	(390)		(390)
Ending Balance (in shares) at Feb. 28, 2021						305		1,274
Ending balance at Feb. 28, 2021	11,931	9,645	(446)	2,729				$ 3
Beginning Balance (in shares) at Nov. 30, 2020						305		1,270
Beginning balance at Nov. 30, 2020	10,640	9,336	(429)	1,730				$ 3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock options exercised (in shares)								4
Stock options exercised	187	187
Dividends on common stock and preferred stock	(436)			(436)
Issuance of shares to employees, net of shares withheld for employee taxes	(34)	(20)		(14)
Stock-based compensation	142	142
Net income	1,449			1,449
Other comprehensive income (loss)	(17)		(17)
Ending Balance (in shares) at Feb. 28, 2021						305		1,274
Ending balance at Feb. 28, 2021	11,931	9,645	(446)	2,729				$ 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				$ 3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock options exercised (in shares)								14
Stock options exercised	837	837
Repurchase of Class B Common Stock (in shares)								(19)
Repurchase of Class B common stock	(2,932)	(126)		(2,806)
Dividends on common stock and preferred stock	(1,406)			(1,406)
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	(10)	43		(53)
Stock-based compensation	467	467
Net income	4,607			4,607
Other comprehensive income (loss)	479		479
Ending Balance (in shares) at Feb. 28, 2022					305	305	1,271	1,271
Ending balance at Feb. 28, 2022	14,809	11,186	99	3,521				$ 3
Beginning Balance (in shares) at Nov. 30, 2021						305		1,278
Beginning balance at Nov. 30, 2021	14,924	10,990	145	3,786				$ 3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock options exercised (in shares)								1
Stock options exercised	112	112
Repurchase of Class B Common Stock (in shares)								(8)
Repurchase of Class B common stock	(1,222)	(57)		(1,165)
Dividends on common stock and preferred stock	(488)			(488)
Issuance of shares to employees, net of shares withheld for employee taxes	(28)	(20)		(8)
Stock-based compensation	161	161
Net income	1,396			1,396
Other comprehensive income (loss)	(46)		(46)
Ending Balance (in shares) at Feb. 28, 2022					305	305	1,271	1,271
Ending balance at Feb. 28, 2022	$ 14,809	$ 11,186	$ 99	$ 3,521				$ 3