Document and Entity Information	6 Months Ended
	Apr. 26, 2013	May 24, 2013
Document and Entity Information [Abstract]
Entity Registrant Name	JOY GLOBAL INC
Entity Central Index Key	0000801898
Document Type	10-Q
Document Period End Date	Apr. 26, 2013
Amendment Flag	false
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--10-25
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		106,263,015