Income Taxes - Provision for Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	May 31, 2021	May 31, 2020	May 31, 2019
Current:
Federal	$ 328	$ (109)	$ 74
State	134	81	56
Foreign	857	756	608
Total Current	1,319	728	738
Deferred:
Federal	(371)	(231)	(33)
State	(34)	(47)	(9)
Foreign	20	(102)	76
Total Deferred	(385)	(380)	34
Income tax expense	$ 934	$ 348	$ 772