Document and Entity Information - shares	9 Months Ended
	Jul. 31, 2015	Aug. 28, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	JOY GLOBAL INC
Entity Central Index Key	0000801898
Document Type	10-Q
Document Period End Date	Jul. 31, 2015
Amendment Flag	false
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--10-30
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		97,474,578