Basis of Presentation and Summary of Significant Accounting Policies - Noncontrolling Interests in Aimco Operating Partnership (Details)	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Weighted average ownership interest	4.90%	4.50%	4.70%

Noncontrolling Interest, Weighted Average Ownership Percentage by Noncontrolling Owners During Period

No definition available.

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