Document and Entity Information	6 Months Ended
	Dec. 31, 2011	Jan. 31, 2012
Entity Registrant Name	MOLEX INC
Entity Central Index Key	0000067472
Document Type	10-Q
Document Period End Date	Dec. 31, 2011
Amendment Flag	false
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--06-30
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		95,560,076
Class A Common Stock
Entity Common Stock, Shares Outstanding		80,389,577
Class B Common Stock
Entity Common Stock, Shares Outstanding		94,255