Document and Entity Information	12 Months Ended
	Mar. 31, 2016 USD ($) shares
Document And Entity Information
Entity Registrant Name	WNC HOUSING TAX CREDIT FUND VI LP SERIES 9
Entity Central Index Key	0001156445
Document Type	10-K
Document Period End Date	Mar. 31, 2016
Amendment Flag	false
Current Fiscal Year End Date	--03-31
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding | shares	0
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2016
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filer	No
Entity Current Reporting Status	Yes
Entity Public Float | $	$ 0