Income Taxes - Schedule of Components of Provision for Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	May 31, 2020	May 31, 2022	May 31, 2021	May 31, 2020
Current provision (benefit)
Federal		$ 311	$ 199	$ (230)
State and local		120	158	67
Foreign		317	284	198
Current Provision, Total		748	641	35
Deferred provision (benefit)
Federal		267	667	475
State and local		21	70	1
Foreign		34	65	(128)
Deferred Provision, Total	$ 51	322	802	348
Provision for Income Taxes, Total		$ 1,070	$ 1,443	$ 383