Accumulated Other Comprehensive Loss - Schedule of Changes in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	$ 27,582
Translation adjustments	29	$ (28)
Ending Balance	27,176	26,534
Foreign Currency Translation Loss [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(1,422)	(1,362)
Translation adjustments	29	(28)
Ending Balance	(1,393)	(1,390)
Retirement Plans Adjustments [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	63	35
Reclassifications from AOCL	(2)	(1)
Ending Balance	61	34
Accumulated Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(1,359)	(1,327)
Ending Balance	$ (1,332)	$ (1,356)