Document and Entity Information - USD ($) $ in Billions	12 Months Ended
	Aug. 31, 2018	Oct. 09, 2018	Feb. 28, 2018
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Aug. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Trading Symbol	JBL
Entity Registrant Name	JABIL INC
Entity Central Index Key	0000898293
Current Fiscal Year End Date	--08-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Shell Company	false
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding		161,878,931
Entity Public Float			$ 4.0