Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
ASSETS
Buildings and improvements	$ 6,481,745	$ 6,212,176
Land	1,937,239	1,915,683
Total real estate	8,418,984	8,127,859
Less accumulated depreciation	(2,908,941)	(2,728,660)
Net real estate ($420,079 and $599,302 related to VIEs)	5,510,043	5,399,199
Cash and cash equivalents ($20,721 and $23,599 related to VIEs)	67,622	84,413
Restricted cash ($38,918 and $38,576 related to VIEs)	130,511	146,281
Accounts receivable, net	32,925	34,020
Notes receivable	215,821	102,897
Other assets ($218,811 and $220,317 related to VIEs)	513,409	516,018
Assets held for sale	19,175	118,552
Total assets	6,489,506	6,401,380
LIABILITIES AND EQUITY
Non-recourse property debt ($374,444 and $495,012 related to VIEs)	4,530,971	4,570,719
Revolving credit facility borrowings	298,550	0
Total indebtedness	4,829,521	4,570,719
Accounts payable	27,438	30,747
Accrued liabilities and other ($156,157 and $160,590 related to VIEs)	328,910	315,637
Deferred income	111,390	128,098
Liabilities related to assets held for sale	17,118	121,239
Total liabilities	5,314,377	5,166,440
Preferred noncontrolling interests in Aimco Operating Partnership	79,969	80,046
Commitments and contingencies (Note 8)	0	0
Equity:
Perpetual Preferred Stock	68,114	68,114
Common Stock, $0.01 par value, 505,787,260 shares authorized, 145,916,439 and 145,563,903 shares issued/outstanding at September 30, 2013 and December 31, 2012, respectively	1,459	1,456
Additional paid-in capital	3,704,393	3,712,684
Accumulated other comprehensive loss	(5,467)	(3,542)
Distributions in excess of earnings	(2,886,352)	(2,863,287)
Total Aimco equity	882,147	915,425
Noncontrolling interests in consolidated real estate partnerships	245,735	271,065
Common noncontrolling interests in Aimco Operating Partnership	(32,722)	(31,596)
Total equity	1,095,160	1,154,894
Total liabilities and equity	6,489,506	6,401,380
AIMCO PROPERTIES, L.P
ASSETS
Buildings and improvements	6,481,745	6,212,176
Land	1,937,239	1,915,683
Total real estate	8,418,984	8,127,859
Less accumulated depreciation	(2,908,941)	(2,728,660)
Net real estate ($420,079 and $599,302 related to VIEs)	5,510,043	5,399,199
Cash and cash equivalents ($20,721 and $23,599 related to VIEs)	67,622	84,413
Restricted cash ($38,918 and $38,576 related to VIEs)	130,511	146,281
Accounts receivable, net	32,925	34,020
Notes receivable	215,821	102,897
Other assets ($218,811 and $220,317 related to VIEs)	513,409	516,018
Assets held for sale	19,175	118,552
Total assets	6,489,506	6,401,380
LIABILITIES AND EQUITY
Non-recourse property debt ($374,444 and $495,012 related to VIEs)	4,530,971	4,570,719
Revolving credit facility borrowings	298,550	0
Total indebtedness	4,829,521	4,570,719
Accounts payable	27,438	30,747
Accrued liabilities and other ($156,157 and $160,590 related to VIEs)	328,910	315,637
Deferred income	111,390	128,098
Liabilities related to assets held for sale	17,118	121,239
Total liabilities	5,314,377	5,166,440
Redeemable preferred units	79,969	80,046
Commitments and contingencies (Note 8)	0	0
Equity:
Preferred units	68,114	68,114
General Partner and Special Limited Partner	814,033	847,311
Limited Partners	(32,722)	(31,596)
Partners’ capital attributable to the Aimco Operating Partnership	849,425	883,829
Noncontrolling interests in consolidated real estate partnerships	245,735	271,065
Total partners’ capital	1,095,160	1,154,894
Total liabilities and equity	$ 6,489,506	$ 6,401,380