Document and Entity Information	6 Months Ended
	Sep. 30, 2015 shares
Document And Entity Information
Entity Registrant Name	WNC HOUSING TAX CREDIT FUND IV L P SERIES 2
Entity Central Index Key	0000913497
Document Type	10-Q
Document Period End Date	Sep. 30, 2015
Amendment Flag	false
Current Fiscal Year End Date	--03-31
Is Entity a Well-known Seasoned Issuer?	No
Is Entity a Voluntary Filer?	No
Is Entity's Reporting Status Current?	Yes
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding	0
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2016