Document and Entity Information - USD ($)	12 Months Ended
	May 31, 2019	Jul. 19, 2019	Nov. 30, 2018
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	May 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Entity Registrant Name	NIKE INC
Entity Central Index Key	0000320187
Current Fiscal Year End Date	--05-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false
Entity Public Float (In Dollars)			$ 99,950,872,130
Class A Convertible Common Stock
Document Information [Line Items]
Entity Public Float (In Dollars)			5,260,259,370
Entity Common Stock Shares Outstanding (In Shares)		315,024,752
Class B Common Stock
Document Information [Line Items]
Entity Public Float (In Dollars)			$ 94,690,612,760
Entity Common Stock Shares Outstanding (In Shares)		1,251,863,621