Fair Value Transfers Between Fair Value Hierarchy Levels

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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 second through fifth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

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- Definition

Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), maturing in next fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

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- Definition

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 ($)	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value transfers between fair value hierarchy levels	$ 0	$ 0
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	396,000,000
Available-for-sale securities with maturity dates over one year and less than five years from purchase date	43,000,000
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	62,000,000	$ 82,000,000	$ 70,000,000
Grupo Axo and SBF \| NIKE Brand Businesses \| Brazil, Argentina, Chile and Uruguay \| Discontinued Operations, Held-for-sale \| Other Income (Expense)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Non-recurring impairment charge	$ 405,000,000