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Earnings (Loss) per Share/Unit - (Details 1)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements 1.6us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements    
Nonvested Restricted Shares of Common Stock with Non-forfeitable Dividend Rights 0.5aiv_NonvestedRestrictedSharesOfCommonStockWithNonForfeitableDividendRights 0.6aiv_NonvestedRestrictedSharesOfCommonStockWithNonForfeitableDividendRights 0.5aiv_NonvestedRestrictedSharesOfCommonStockWithNonForfeitableDividendRights
Number of Shares of Common Stock Required to Redeem Preferred OP Units Tendered for Redemption, if Parent Chooses to Redeem in Sares Rther than Cash 2.4aiv_NumberofSharesofCommonStockRequiredtoRedeemPreferredOPUnitsTenderedforRedemptionifParentChoosestoRedeeminSharesRatherthanCash    
AIMCO PROPERTIES, L.P.      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements 1.6us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
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Nonvested Restricted Shares of Common Stock with Non-forfeitable Dividend Rights 0.5aiv_NonvestedRestrictedSharesOfCommonStockWithNonForfeitableDividendRights
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
0.5aiv_NonvestedRestrictedSharesOfCommonStockWithNonForfeitableDividendRights
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
0.6aiv_NonvestedRestrictedSharesOfCommonStockWithNonForfeitableDividendRights
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= us-gaap_SubsidiariesMember