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INVESTMENTS - Schedule of Investments in Debt Securities (Details) - USD ($) $ in Millions	May 31, 2025	May 31, 2024
Debt Securities, Available-for-Sale [Line Items]
Gross Unrealized, Cost	$ 69	$ 76
Gross Unrealized, Gains	1	1
Gross Unrealized, Losses	0	0
Gross Unrealized, Estimated Fair Value	70	77
Fixed-income securities
Debt Securities, Available-for-Sale [Line Items]
Gross Unrealized, Cost	69	76
Gross Unrealized, Gains	1	1
Gross Unrealized, Losses	0	0
Gross Unrealized, Estimated Fair Value	$ 70	$ 77

X

- Definition

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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