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Aimco Equity - (Details 2) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Class of Stock [Line Items]      
Per share par value of preferred stock issued $ 0.01us-gaap_PreferredStockParOrStatedValuePerShare    
Net proceeds from stock issued during period $ 123,552,000us-gaap_StockIssuedDuringPeriodValueNewIssues   $ 9,818,000us-gaap_StockIssuedDuringPeriodValueNewIssues
Proceeds to Aimco from stock options exercised 768,000us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised 993,000us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised 48,907,000us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
Class A Cumulative Preferred Stock [Member]      
Class of Stock [Line Items]      
Dividend rate of preferred stock issued 6.88%us-gaap_PreferredStockDividendRatePercentage
/ us-gaap_StatementClassOfStockAxis
= aiv_ClassACumulativePreferredStockMember
   
Preferred stock, liquidation preference per share $ 25.00us-gaap_PreferredStockLiquidationPreference
/ us-gaap_StatementClassOfStockAxis
= aiv_ClassACumulativePreferredStockMember
   
Number of shares of stock issued 5,000,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementClassOfStockAxis
= aiv_ClassACumulativePreferredStockMember
   
Net proceeds per share of stock issued $ 24.15aiv_NetProceedsPerShareOfStockIssued
/ us-gaap_StatementClassOfStockAxis
= aiv_ClassACumulativePreferredStockMember
   
Class Z Cumulative Preferred Stock [Member]      
Class of Stock [Line Items]      
Dividend rate of preferred stock issued 7.00%us-gaap_PreferredStockDividendRatePercentage
/ us-gaap_StatementClassOfStockAxis
= aiv_ClassZCumulativePreferredStockMember
   
Preferred stock, liquidation preference per share $ 25.00us-gaap_PreferredStockLiquidationPreference
/ us-gaap_StatementClassOfStockAxis
= aiv_ClassZCumulativePreferredStockMember
   
Number of shares of stock issued 117,400us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementClassOfStockAxis
= aiv_ClassZCumulativePreferredStockMember
   
Net proceeds per share of stock issued $ 25.14aiv_NetProceedsPerShareOfStockIssued
/ us-gaap_StatementClassOfStockAxis
= aiv_ClassZCumulativePreferredStockMember
   
Shares available for issuance under at-the-market offering programs 3,400,000aiv_SharesAvailableForIssuanceUnderAtMarketOfferingPrograms
/ us-gaap_StatementClassOfStockAxis
= aiv_ClassZCumulativePreferredStockMember
   
Series A Community Reinvestment Act Preferred Stock [Member]      
Class of Stock [Line Items]      
Preferred stock dividend description variable rate per annum equal to the Three-Month LIBOR Rate (as defined in the articles supplementary designating the Series A Community Reinvestment Act Perpetual Preferred Stock, or CRA Preferred Stock) plus 1.25%, calculated as of the beginning of each quarterly dividend period    
Dividend rate of preferred stock issued 1.48%us-gaap_PreferredStockDividendRatePercentage
/ us-gaap_StatementClassOfStockAxis
= aiv_SeriesCommunityReinvestmentActPreferredStockMember
1.50%us-gaap_PreferredStockDividendRatePercentage
/ us-gaap_StatementClassOfStockAxis
= aiv_SeriesCommunityReinvestmentActPreferredStockMember
 
Preferred stock, liquidation preference per share $ 500,000us-gaap_PreferredStockLiquidationPreference
/ us-gaap_StatementClassOfStockAxis
= aiv_SeriesCommunityReinvestmentActPreferredStockMember
   
Shares of preferred stock redeemed during period 0us-gaap_StockRedeemedOrCalledDuringPeriodShares
/ us-gaap_StatementClassOfStockAxis
= aiv_SeriesCommunityReinvestmentActPreferredStockMember
   
Preferred Stock, Redemption Amount 10,000,000us-gaap_PreferredStockRedemptionAmount
/ us-gaap_StatementClassOfStockAxis
= aiv_SeriesCommunityReinvestmentActPreferredStockMember
   
Preferred stock redeemed during period at redemption value 9,500,000us-gaap_StockRedeemedOrCalledDuringPeriodValue
/ us-gaap_StatementClassOfStockAxis
= aiv_SeriesCommunityReinvestmentActPreferredStockMember
   
Preferred Stock Redemption Discount 500,000us-gaap_PreferredStockRedemptionDiscount
/ us-gaap_StatementClassOfStockAxis
= aiv_SeriesCommunityReinvestmentActPreferredStockMember
   
Previously deferred issuance costs reflected as an adjustment of net income attributable to preferred security holders 300,000us-gaap_OtherPreferredStockDividendsAndAdjustments
/ us-gaap_StatementClassOfStockAxis
= aiv_SeriesCommunityReinvestmentActPreferredStockMember
   
Preferred Stock [Member]      
Class of Stock [Line Items]      
Dividend rate of preferred stock issued     7.86%us-gaap_PreferredStockDividendRatePercentage
/ us-gaap_StatementClassOfStockAxis
= us-gaap_PreferredStockMember
Shares of preferred stock redeemed during period     24,000,000us-gaap_StockRedeemedOrCalledDuringPeriodShares
/ us-gaap_StatementClassOfStockAxis
= us-gaap_PreferredStockMember
Preferred stock redeemed during period at redemption value     600,900,000us-gaap_StockRedeemedOrCalledDuringPeriodValue
/ us-gaap_StatementClassOfStockAxis
= us-gaap_PreferredStockMember
Previously deferred issuance costs reflected as an adjustment of net income attributable to preferred security holders     20,700,000us-gaap_OtherPreferredStockDividendsAndAdjustments
/ us-gaap_StatementClassOfStockAxis
= us-gaap_PreferredStockMember
Class A Common Stock [Member]      
Class of Stock [Line Items]      
Number of public stock offerings completed during period     2aiv_NumberOfPublicStockOfferingsCompletedDuringPeriod
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
Number of shares of stock issued     22,144,200us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
Net proceeds from stock issued during period     594,400,000us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
Net proceeds per share of stock issued     $ 26.84aiv_NetProceedsPerShareOfStockIssued
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
Number of public stock offerings completed during period to which exercise of stock options related     1aiv_NumberOfPublicStockOfferingsCompletedDuringPeriodToWhichExerciseOfStockOptionsRelated
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
Near-term expiring stock options exercised     2,041,934us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
Weighted average exercise price of stock options exercised by holders of near-term expiring stock options     $ 23.01aiv_StockOptionsExercisedDuringPeriodWeightedAverageExercisePrice
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
Proceeds to Aimco from stock options exercised     $ 47,000,000us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
Shares available for issuance under at-the-market offering programs 3,500,000aiv_SharesAvailableForIssuanceUnderAtMarketOfferingPrograms
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember