Document and Entity Information - USD ($)	12 Months Ended
	May 31, 2017	Jul. 17, 2017	Nov. 30, 2016
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	May 31, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	FY
Trading Symbol	NKE
Entity Registrant Name	NIKE INC
Entity Central Index Key	0000320187
Current Fiscal Year End Date	--05-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Public Float (In Dollars)			$ 69,943,500,503
Class A Convertible Common Stock
Document Information [Line Items]
Entity Public Float (In Dollars)			3,617,645,223
Entity Common Stock Shares Outstanding (In Shares)		329,245,752
Class B Common Stock
Document Information [Line Items]
Entity Public Float (In Dollars)			$ 66,325,855,280
Entity Common Stock Shares Outstanding (In Shares)		1,313,949,313