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RETIREMENT PLANS - Schedule of Retirement Plan Costs (Details) - USD ($) $ in Millions	3 Months Ended
	Aug. 31, 2025	Aug. 31, 2024
Retirement Benefits [Abstract]
Defined benefit pension plans	$ 47	$ 70
Defined contribution plans	306	287
Postretirement healthcare plans	22	22
Retirement plans costs	$ 375	$ 379

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- Definition

Amount of net periodic benefit cost (credit) for defined benefit plan.

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Amount of cost for defined contribution plan.

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Amount of cost (reversal of cost) for other postretirement benefits. Excludes pension benefits.

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Amount of cost (reversal of cost) for pension and other postretirement benefits.

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