Organization	3 Months Ended
Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Organization Apartment Investment and Management Company, or Aimco, is a Maryland corporation incorporated on January 10, 1994. Aimco is a self-administered and self-managed real estate investment trust, or REIT. AIMCO Properties, L.P., or the Aimco Operating Partnership, is a Delaware limited partnership formed on May 16, 1994, to conduct our business, which is focused on the ownership and management of quality apartment communities located in the largest coastal and job growth markets in the United States. Aimco, and through its wholly-owned subsidiaries, AIMCO-GP, Inc. and AIMCO-LP Trust, owns a majority of the ownership interests in the Aimco Operating Partnership. Aimco conducts all of its business and owns all of its assets through the Aimco Operating Partnership. Interests in the Aimco Operating Partnership that are held by limited partners other than Aimco are referred to as “OP Units.” OP Units include common partnership units, high performance partnership units and partnership preferred units, which we refer to as common OP Units, HPUs and preferred OP Units, respectively. We also refer to HPUs as common OP Unit equivalents. At March 31, 2015, after eliminations for units held by consolidated entities, the Aimco Operating Partnership had 163,913,674 common partnership units and equivalents outstanding. At March 31, 2015, Aimco owned 156,278,378 of the common partnership units (95.3% of the common partnership units and equivalents) of the Aimco Operating Partnership and Aimco had outstanding an equal number of shares of its Class A Common Stock, which we refer to as Common Stock. Except as the context otherwise requires, “we,” “our” and “us” refer to Aimco, the Aimco Operating Partnership and their consolidated subsidiaries, collectively. As of March 31, 2015, we owned an equity interest in 141 conventional apartment communities with 42,566 apartment homes and 57 affordable apartment communities with 8,769 apartment homes. Of these, we consolidated 137 conventional apartment communities with 42,424 apartment homes and 50 affordable apartment communities with 8,082 apartment homes. Conventional and affordable apartment communities generated 90% and 10%, respectively, of the proportionate property net operating income (as defined in Note 8 and excluding amounts related to apartment communities sold or classified as held for sale) during the three months ended March 31, 2015.

Organization

Apartment Investment and Management Company, or Aimco, is a Maryland corporation incorporated on January 10, 1994. Aimco is a self-administered and self-managed real estate investment trust, or REIT. AIMCO Properties, L.P., or the Aimco Operating Partnership, is a Delaware limited partnership formed on May 16, 1994, to conduct our business, which is focused on the ownership and management of quality apartment communities located in the largest coastal and job growth markets in the United States.

Aimco, and through its wholly-owned subsidiaries, AIMCO-GP, Inc. and AIMCO-LP Trust, owns a majority of the ownership interests in the Aimco Operating Partnership. Aimco conducts all of its business and owns all of its assets through the Aimco Operating Partnership. Interests in the Aimco Operating Partnership that are held by limited partners other than Aimco are referred to as “OP Units.” OP Units include common partnership units, high performance partnership units and partnership preferred units, which we refer to as common OP Units, HPUs and preferred OP Units, respectively. We also refer to HPUs as common OP Unit equivalents. At March 31, 2015, after eliminations for units held by consolidated entities, the Aimco Operating Partnership had 163,913,674 common partnership units and equivalents outstanding. At March 31, 2015, Aimco owned 156,278,378 of the common partnership units (95.3% of the common partnership units and equivalents) of the Aimco Operating Partnership and Aimco had outstanding an equal number of shares of its Class A Common Stock, which we refer to as Common Stock.

Except as the context otherwise requires, “we,” “our” and “us” refer to Aimco, the Aimco Operating Partnership and their consolidated subsidiaries, collectively.

As of March 31, 2015, we owned an equity interest in 141 conventional apartment communities with 42,566 apartment homes and 57 affordable apartment communities with 8,769 apartment homes. Of these, we consolidated 137 conventional apartment communities with 42,424 apartment homes and 50 affordable apartment communities with 8,082 apartment homes. Conventional and affordable apartment communities generated 90% and 10%, respectively, of the proportionate property net operating income (as defined in Note 8 and excluding amounts related to apartment communities sold or classified as held for sale) during the three months ended March 31, 2015.