Document and Entity Information - USD ($) $ in Billions	12 Months Ended
	Oct. 30, 2015	Dec. 11, 2015	May. 01, 2015
Entity Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Oct. 30, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	FY
Trading Symbol	JOY
Entity Registrant Name	JOY GLOBAL INC.
Entity Central Index Key	0000801898
Current Fiscal Year End Date	--10-30
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		97,928,331
Entity Public Float			$ 4.2