Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
ASSETS
Buildings and improvements	$ 6,127,249	$ 5,930,910
Land	1,341,615	1,421,069
Total real estate	7,468,864	7,351,979
Accumulated depreciation	(2,455,505)	(2,268,839)
Net real estate	5,013,359	5,083,140
Cash and cash equivalents	44,214	136,458
Restricted cash	29,266	30,083
Notes receivable from Aimco	534,127	0
Goodwill	32,286	32,286
Other assets	576,026	604,593
Assets of discontinued operations	0	1,022,696
Total assets	6,229,278	6,909,256
LIABILITIES AND EQUITY
Non-recourse property debt, net	3,628,236	3,737,805
Term loan, net	349,164	0
Revolving credit facility borrowings	265,600	275,000
Total indebtedness	4,243,000	4,012,805
Accrued liabilities and other	598,736	270,487
Liabilities of discontinued operations	0	663,389
Total liabilities	4,841,736	4,946,681
Preferred noncontrolling interests in AIR Operating Partnership	79,449	97,064
Redeemable noncontrolling interests in consolidated real estate partnership	0	4,716
Commitments and contingencies (Note 7)
Equity/Partners' Capital:
Perpetual preferred stock	2,000	0
Common Stock, $0.01 par value, 1,021,175,000 and 500,787,260 shares authorized at December 31, 2020 and 2019, respectively, and 148,861,036 and 120,242,385 shares issued/outstanding at December 31, 2020 and 2019, respectively	1,489	1,202
Additional paid-in capital	3,432,121	3,497,654
Accumulated other comprehensive income	3,039	4,195
Distributions in excess of earnings	(2,131,798)	(1,722,402)
Total AIR equity	1,306,851	1,780,649
Noncontrolling interests in consolidated real estate partnerships	(61,943)	(3,296)
Common noncontrolling interests in AIR Operating Partnership	63,185	83,442
Total equity	1,308,093	1,860,795
Total liabilities and equity	6,229,278	6,909,256
AIMCO Properties, LP [Member]
ASSETS
Buildings and improvements	6,127,249	5,930,910
Land	1,341,615	1,421,069
Total real estate	7,468,864	7,351,979
Accumulated depreciation	(2,455,505)	(2,268,839)
Net real estate	5,013,359	5,083,140
Cash and cash equivalents	44,214	136,458
Restricted cash	29,266	30,083
Goodwill	32,286	32,286
Other assets	576,026	604,593
Total assets	6,229,278	6,909,256
Notes receivable from Aimco	534,127
Assets of discontinued operations		1,022,696
LIABILITIES AND EQUITY
Non-recourse property debt, net	3,628,236	3,737,805
Term loan, net	349,164
Revolving credit facility borrowings	265,600	275,000
Total indebtedness	4,243,000	4,012,805
Accrued liabilities and other	598,736	270,487
Total liabilities	4,841,736	4,946,681
Preferred noncontrolling interests in AIR Operating Partnership	79,449	97,064
Redeemable noncontrolling interests in consolidated real estate partnership		4,716
Commitments and contingencies (Note 7)
Equity/Partners' Capital:
Preferred units	2,000
General Partner and Special Limited Partner	1,304,851	1,780,649
Limited Partners	63,185	83,442
Partners’ capital attributable to the AIR Operating Partnership	1,370,036	1,864,091
Partners' Capital Attributable to Noncontrolling Interest	(61,943)	(3,296)
Total partners’ capital	1,308,093	1,860,795
Total liabilities and equity	$ 6,229,278	6,909,256
Liabilities of discontinued operations		$ 663,389