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Organization and Summary of Significant Accounting Policies (Details 2)
Dec. 31, 2014
Dec. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Outstanding Limited Partnership Units 109,446aiv_OutstandingLimitedPartnershipUnits 109,496aiv_OutstandingLimitedPartnershipUnits
Limited Partnership Units outstanding at beginning of year - per unit calculations 109,496aiv_LimitedPartnershipUnitsOutstandingAtBeginningOfYearPerUnitCalculations 109,524aiv_LimitedPartnershipUnitsOutstandingAtBeginningOfYearPerUnitCalculations