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Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

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FAIR VALUE MEASUREMENTS - Additional Information (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Mar. 31, 2025	Feb. 28, 2025	Feb. 29, 2024	Feb. 28, 2025	Feb. 29, 2024	May 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities with maturity dates within one year from purchase date		$ 845		$ 845
Available-for-sale securities with maturity dates over one year and less than five years from purchase date		947		947
Interest income related to cash and equivalents and short-term investments		97	$ 113	314	$ 304
Fair value of long term debt		$ 7,825		$ 7,825		$ 7,631
Corporate Bond 2.40 Percent Due March 27, 2025 \| Corporate Debt Securities \| Subsequent Event
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Repayments of debt	$ 1,000
Interest rate, stated percentage	2.40%