Schedule of Combined Condensed Balance Sheets (Details) (USD $)	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2010	Dec. 31, 2012 Local Limited Partnerships [Member]	Dec. 31, 2011 Local Limited Partnerships [Member]
Buildings and improvements (net of accumulated depreciation as of December 31, 2012 and 2011 of $5,451,000 and $15,330,000, respectively)					$ 4,577,000	$ 12,501,000
Land					369,000	1,047,000
Other assets		34,109			681,000	2,095,000
Total assets	94,108	78,773			5,627,000	15,643,000
Mortgage payable					4,114,000	15,040,000
Due to affiliates					3,000	154,000
Other liabilities					294,000	1,081,000
Total liabilities	219,914	532,918			4,411,000	16,275,000
WNC Housing Tax Credit Fund IV, L.P., Series 2	2,516,000	396,000			2,516,000	396,000
Other partners					(1,300,000)	(1,028,000)
Total partners' equity deficit	(125,806)	(454,145)	(661,220)	(665,364)	1,216,000	(632,000)
Total liabilities and partners' equity deficit	94,108	78,773			5,627,000	15,643,000
Accumulated depreciation of Buildings and improvements					$ 5,451,000	$ 15,330,000