Document and Entity Information (USD $) In Millions, except Share data, unless otherwise specified	9 Months Ended
	Oct. 29, 2011	Dec. 01, 2011	Jul. 31, 2010
Document and Entity Information [Abstract]
Entity Registrant Name	MENS WEARHOUSE INC
Entity Central Index Key	0000884217
Document Type	10-Q
Document Period End Date	Oct. 29, 2011
Amendment Flag	false
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--01-28
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 947.9
Entity Common Stock, Shares Outstanding		51,262,224