Organization	12 Months Ended
Dec. 31, 2014
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, management and redevelopment of quality apartment communities located in the largest coastal and job growth markets in the United States. Aimco, 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 partnership unit equivalents. At December 31, 2014, after eliminations for units held by consolidated subsidiaries, the Aimco Operating Partnership had 154,055,231 common partnership units and equivalents outstanding. At December 31, 2014, Aimco owned 146,403,274 of the common partnership units (95.0% 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 December 31, 2014, we owned an equity interest in 144 conventional apartment communities with 43,393 apartment homes and 59 affordable apartment communities with 8,943 apartment homes. Of these apartment communities, we consolidated 140 conventional apartment communities with 43,251 apartment homes and 52 affordable apartment communities with 8,256 apartment homes. These conventional and affordable apartment communities generated 90% and 10%, respectively, of the proportionate property net operating income (as defined in Note 15 and excluding amounts related to apartment communities sold or classified as held for sale) during the year ended December 31, 2014.

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, management and redevelopment of quality apartment communities located in the largest coastal and job growth markets in the United States.

Aimco, 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 partnership unit equivalents. At December 31, 2014, after eliminations for units held by consolidated subsidiaries, the Aimco Operating Partnership had 154,055,231 common partnership units and equivalents outstanding. At December 31, 2014, Aimco owned 146,403,274 of the common partnership units (95.0% 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 December 31, 2014, we owned an equity interest in 144 conventional apartment communities with 43,393 apartment homes and 59 affordable apartment communities with 8,943 apartment homes. Of these apartment communities, we consolidated 140 conventional apartment communities with 43,251 apartment homes and 52 affordable apartment communities with 8,256 apartment homes. These conventional and affordable apartment communities generated 90% and 10%, respectively, of the proportionate property net operating income (as defined in Note 15 and excluding amounts related to apartment communities sold or classified as held for sale) during the year ended December 31, 2014.