Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
ASSETS
Buildings and improvements	$ 6,570,710	$ 6,552,065
Land	1,741,531	1,756,525
Total real estate	8,312,241	8,308,590
Accumulated depreciation	(2,593,241)	(2,585,115)
Net real estate	5,719,000	5,723,475
Cash and cash equivalents	33,958	36,858
Restricted cash	31,949	35,737
Other assets	455,897	351,541
Assets held for sale	0	42,393
Total assets	6,240,804	6,190,004
LIABILITIES AND EQUITY
Non-recourse property debt, net	3,702,487	3,915,305
Revolving credit facility borrowings	294,960	160,360
Total indebtedness	3,997,447	4,075,665
Accrued liabilities and other	299,313	226,230
Liabilities related to assets held for sale	0	23,177
Total liabilities	4,296,760	4,325,072
Preferred noncontrolling interests/Redeemable Preferred Units	101,178	101,291
Commitments and contingencies (Note 5)
Equity/Partners' Capital:
Perpetual Preferred Stock	0	125,000
Common Stock, $0.01 par value, 500,787,260 shares authorized, 148,827,363 and 144,623,034 shares issued/outstanding at June 30, 2019 and December 31, 2018, respectively	1,488	1,446
Additional paid-in capital	3,498,629	3,515,686
Accumulated other comprehensive income	4,866	4,794
Distributions in excess of earnings	(1,741,765)	(1,947,507)
Total Aimco equity	1,763,218	1,699,419
Noncontrolling interests in consolidated real estate partnerships	(2,718)	(2,967)
Common noncontrolling interests in Aimco Operating Partnership	82,366	67,189
Total equity	1,842,866	1,763,641
Total liabilities and equity	6,240,804	6,190,004
AIMCO Properties, LP [Member]
ASSETS
Buildings and improvements	6,570,710	6,552,065
Land	1,741,531	1,756,525
Total real estate	8,312,241	8,308,590
Accumulated depreciation	(2,593,241)	(2,585,115)
Net real estate	5,719,000	5,723,475
Cash and cash equivalents	33,958	36,858
Restricted cash	31,949	35,737
Other assets	455,897	351,541
Assets held for sale	0	42,393
Total assets	6,240,804	6,190,004
LIABILITIES AND EQUITY
Non-recourse property debt, net	3,702,487	3,915,305
Revolving credit facility borrowings	294,960	160,360
Total indebtedness	3,997,447	4,075,665
Accrued liabilities and other	299,313	226,230
Liabilities related to assets held for sale	0	23,177
Total liabilities	4,296,760	4,325,072
Preferred noncontrolling interests/Redeemable Preferred Units	101,178	101,291
Commitments and contingencies (Note 5)
Equity/Partners' Capital:
Preferred units	0	125,000
General Partner and Special Limited Partner	1,763,218	1,574,419
Limited Partners	82,366	67,189
Partners’ capital attributable to the Aimco Operating Partnership	1,845,584	1,766,608
Partners' Capital Attributable to Noncontrolling Interest	(2,718)	(2,967)
Total partners’ capital	1,842,866	1,763,641
Total liabilities and equity	$ 6,240,804	$ 6,190,004