Organization and Business (Details) (USD $)	12 Months Ended				12 Months Ended
	Jan. 04, 1996	Mar. 31, 2013 Fund VIII-IX Associates	Mar. 31, 2013 Fund VIII-IX Associates Wells Real Estate Fund IX, L.P.	Jan. 06, 1995 Public Offering	Jan. 04, 1996 Class A Units	Jan. 04, 1996 Class B Units
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Limited Partners' Capital Account, Value of Units Authorized				$ 35,000,000
Limited Partners' Capital Account, Value Per Unit				10.00
Sold partnership units (in units)					2,613,534	590,735
Proceeds from issuance of limited partners units	$ 32,042,689
Ownership in joint venture (percent)		54.80%	45.20%