Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2011	Dec. 31, 2010
ASSETS
Buildings and improvements	$ 6,993,515	$ 7,100,012
Land	2,107,082	2,108,349
Total real estate	9,100,597	9,208,361
Less accumulated depreciation	(2,837,896)	(2,821,935)
Net real estate ($817,297 and $846,081 related to VIEs)	6,262,701	6,386,426
Cash and cash equivalents ($35,430 and $34,808 related to VIEs)	85,324	111,325
Restricted cash ($50,373 and $55,076 related to VIEs)	196,426	200,503
Accounts receivable, net ($10,238 and $8,393 related to VIEs)	41,293	49,855
Accounts receivable from affiliates, net	5,179	8,392
Deferred financing costs, net	46,984	46,953
Notes receivable from unconsolidated real estate partnerships, net	10,209	10,896
Notes receivable from non-affiliates, net	117,078	116,726
Investment in unconsolidated real estate partnerships ($48,748 and $54,374 related to VIEs)	74,349	59,282
Other assets	239,797	180,596
Deferred income tax assets, net	61,919	58,736
Assets held for sale	23,713	148,876
Total assets	7,164,972	7,378,566
LIABILITIES AND EQUITY
Non-recourse property tax-exempt bond financing ($225,837 and $209,550 related to VIEs)	434,536	511,811
Non-recourse property loans payable ($417,669 and $428,417 related to VIEs)	4,872,614	4,833,938
Revolving credit facility borrowings	21,500	0
Other borrowings ($13,294 and $15,486 related to VIEs)	40,974	47,018
Total indebtedness	5,369,624	5,392,767
Accounts payable	25,988	27,322
Accrued liabilities and other ($66,162 and $79,170 related to VIEs)	228,396	250,103
Deferred income	147,082	150,577
Security deposits	34,982	34,308
Liabilities related to assets held for sale	24,177	113,289
Total liabilities	5,830,249	5,968,366
Preferred noncontrolling interests in Aimco Operating Partnership	83,387	83,428
Preferred stock subject to repurchase agreement	10,000	20,000
Commitments and contingencies (Note 5)
Equity:
Perpetual Preferred Stock	657,601	657,601
Class A Common Stock, $0.01 par value, 485,687,260 and 422,157,736 shares authorized, 120,477,521 and 117,642,872 shares issued and outstanding at June 30, 2011 and December 31, 2010, respectively	1,205	1,176
Additional paid-in capital	3,095,994	3,070,296
Accumulated other comprehensive loss	(1,147)	(2,076)
Distributions in excess of earnings	(2,774,353)	(2,680,955)
Total Aimco equity	979,300	1,046,042
Noncontrolling interests in consolidated real estate partnerships	289,865	291,458
Common noncontrolling interests in Aimco Operating Partnership	(27,829)	(30,728)
Total equity	1,241,336	1,306,772
Total liabilities and equity	$ 7,164,972	$ 7,378,566