Document and Entity Information (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Jan. 31, 2015	Mar. 17, 2015	Aug. 02, 2014
Document and Entity Information
Entity Registrant Name	MENS WEARHOUSE INC
Entity Central Index Key	0000884217
Document Type	10-K
Document Period End Date	Jan. 31, 2015
Amendment Flag	false
Current Fiscal Year End Date	--01-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 2,466.1
Entity Common Stock, Shares Outstanding		48,135,587
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY