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Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 29, 2020	Feb. 28, 2019	Feb. 29, 2020	Feb. 28, 2019	May 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long term debt	$ 4,009		$ 4,009		$ 3,524
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	267		267
Available-for-sale securities with maturity dates over one year and less than five years from purchase date	52		52
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	16	$ 20	51	$ 60
Grupo Axo and SBF \| Discontinued Operations, Held-for-sale \| NIKE Brand Businesses \| Brazil, Argentina, Chile and Uruguay \| Other Income (Expense)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Non-recurring impairment charge	$ 400		$ 400