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DESCRIPTION OF BUSINESS SEGMENTS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Obligation Confirmed and Paid (Details) - Supply Chain Finance - USD ($) $ in Millions	6 Months Ended
	Nov. 30, 2025	Nov. 30, 2024
Supplier Finance Program [Line Items]
Supplier Finance Program, Obligation, Statement of Financial Position [Extensible Enumeration]	Accounts payable	Accounts payable
Supplier Finance Program, Obligation [Roll Forward]
Confirmed obligations outstanding at the beginning of the year	$ 71	$ 94
Invoices confirmed during the period	362	330
Confirmed invoices paid during the period	(315)	(315)
Currency translation adjustments	0	(5)
Confirmed obligations outstanding at the end of the year	$ 118	$ 104

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