Document and Entity Information	3 Months Ended
	Jan. 25, 2013	Feb. 22, 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	Jan. 25, 2013
Amendment Flag	false
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--10-25
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		106,205,603