Organization	9 Months Ended
Sep. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	ORGANIZATION Capital Realty Investors-IV Limited Partnership (the “Partnership”) is a limited partnership which was formed under the Maryland Revised Uniform Limited Partnership Act on December 7, 1983. The Partnership was formed for the purpose of raising capital by offering and selling limited partnership interests and then investing in limited partnerships ("Local Partnerships"), each of which owns and operates an existing rental housing project which was originally financed and/or operated with one or more forms of rental assistance or financial assistance from the U.S. Department of Housing and Urban Development ("HUD"). The Partnership originally made investments in forty-seven Local Partnerships. As of September 30, 2013, the Partnership retained investments in three Local Partnerships, owning two apartment communities. These condensed consolidated financial statements include the accounts of one intermediary limited partnership which has invested in one Local Partnership. The General Partners of the Partnership are C.R.I., Inc. (“CRI”), which is the Managing General Partner, and current and former shareholders of CRI. Services for the Partnership are performed by CRI, as the Partnership has no employees of its own.

Organization

9 Months Ended

Sep. 30, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

ORGANIZATION

Capital Realty Investors-IV Limited Partnership (the “Partnership”) is a limited partnership which was formed under the Maryland Revised Uniform Limited Partnership Act on December 7, 1983. The Partnership was formed for the purpose of raising capital by offering and selling limited partnership interests and then investing in limited partnerships ("Local Partnerships"), each of which owns and operates an existing rental housing project which was originally financed and/or operated with one or more forms of rental assistance or financial assistance from the U.S. Department of Housing and Urban Development ("HUD"). The Partnership originally made investments in forty-seven Local Partnerships. As of September 30, 2013, the Partnership retained investments in three Local Partnerships, owning two apartment communities. These condensed consolidated financial statements include the accounts of one intermediary limited partnership which has invested in one Local Partnership.

The General Partners of the Partnership are C.R.I., Inc. (“CRI”), which is the Managing General Partner, and current and former shareholders of CRI. Services for the Partnership are performed by CRI, as the Partnership has no employees of its own.