Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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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 (Detail) - USD ($) $ in Millions	12 Months Ended
	May 31, 2021	May 31, 2020	May 31, 2019
Short-term Investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities with maturity dates within one year from purchase date	$ 2,993
Available-for-sale securities with maturity dates over one year and less than five years from purchase date	594
Interest (income) expense, net
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest income related to cash and equivalents and short-term investments	$ 34	$ 62	$ 82