7Baggers

Apartment Investment and Management Company
(NYSE:AIV) 

AIV stock logo

Aimco is a Real Estate Investment Trust focused on property development, redevelopment, and various other value-creating investment strategies, targeting the U.S. multifamily market. Aimco is traded on the New York Stock Exchange as AIV. For more information about Aimco, please visit our website www...

Full Time Employees: 950
Sector: Real Estate
Industry: REIT-Residential

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Quarterly
Annual
    Unit: USD2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-07-31 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 2004-12-31 2004-09-30 
                                                                                           
      revenues
                                                                                           
      rental and other property revenues
    34,639,000 35,132,000 52,758,000 52,352,000 54,171,000 53,158,000 51,148,000 50,203,000 49,352,000 47,701,000 45,674,000 44,268,000 41,969,000 47,683,000 50,697,000 49,994,000 46,721,000 42,893,000 40,418,000 39,804,000 -507,364,000 215,455,000 218,808,000 224,552,000             246,064,000 244,115,000 242,871,000 241,481,000 239,646,000 240,382,000 238,637,000 238,637,000 238,289,000 233,330,000 239,873,000 239,492,000 240,136,000 207,119,000 247,117,000 251,853,000 248,198,000 231,273,000 256,752,000 261,958,000 265,728,000   273,384,000 277,317,000 263,761,000 282,595,000 285,395,000 288,719,000 215,465,000 307,907,000 320,852,000 338,093,000 280,346,000 361,996,000 384,191,000 417,646,000 405,874,000 416,633,000 421,864,000 417,036,000 384,309,000 422,602,000 419,234,000 417,488,000 1,080,096,000 379,550,000 385,566,000 376,334,000 1,042,237,000 359,416,000 
      operating expenses
                                                                                           
      property operating expenses
    17,163,000 16,893,000 23,192,000 23,065,000 23,891,000 23,337,000 22,557,000 21,199,000 19,064,000 18,328,000 18,783,000 17,504,000 15,408,000 17,455,000 19,708,000 19,221,000 16,113,000 18,155,000 16,403,000 16,942,000 -163,018,000 74,929,000 74,123,000 75,480,000             84,202,000 91,523,000 88,305,000 88,397,000 87,350,000 88,621,000 87,930,000 87,930,000 95,492,000 84,500,000 95,174,000 94,438,000 99,270,000 80,180,000 98,463,000 101,717,000 101,876,000 92,710,000 106,462,000 105,875,000 108,642,000   117,379,000 126,084,000 114,315,000 128,174,000 132,946,000 140,415,000 94,903,000 146,608,000 142,914,000 156,489,000 119,455,000 172,705,000 174,158,000 204,485,000 192,242,000 198,674,000 192,681,000 196,671,000 186,233,000 194,749,000 190,485,000 200,858,000 520,427,000 185,078,000 181,153,000 182,481,000 492,717,000 176,090,000 
      depreciation and amortization
    13,356,000 16,222,000 16,363,000 16,421,000 21,236,000 23,545,000 22,110,000 19,468,000 17,728,000 17,804,000 17,031,000 16,271,000 15,547,000 85,438,000 34,863,000 23,118,000 21,647,000 21,709,000 20,639,000 20,717,000 -218,449,000 98,249,000 97,689,000 100,476,000 97,144,000 97,538,000 91,924,000 93,565,000 91,347,000 96,406,000 97,485,000 92,548,000 97,348,000 92,513,000 89,155,000 87,168,000 87,710,000 84,848,000 80,680,000 79,828,000 79,482,000 77,237,000 75,150,000 75,150,000 74,432,000 71,465,000 69,437,000 71,399,000 70,307,000 62,640,000 74,622,000 78,345,000 80,331,000 80,099,000 87,444,000 93,052,000 94,317,000   94,084,000 100,911,000 103,667,000 107,309,000 108,667,000 109,019,000 88,733,000 122,362,000 122,198,000 123,215,000 114,959,000 120,771,000 120,692,000 126,524,000 117,446,000 128,547,000 121,807,000 123,990,000 117,973,000 126,112,000 116,412,000 113,940,000 299,481,000 112,594,000 107,715,000 104,541,000 278,546,000 90,298,000 
      general and administrative expenses
    10,524,000 7,523,000 7,798,000 8,180,000 8,961,000 7,750,000 7,577,000 8,549,000 8,378,000 8,198,000 7,890,000 8,403,000 10,430,000 10,809,000 8,961,000 9,472,000 10,589,000 8,868,000 7,383,000 6,311,000 -17,453,000 8,118,000 9,696,000 10,108,000 12,723,000 11,821,000 12,124,000 10,369,000 9,072,000 12,479,000 13,882,000 11,355,000 12,058,000 10,529,000 10,108,000 10,682,000 10,428,000 11,320,000 11,254,000 11,935,000 9,451,000 11,013,000 12,062,000 12,062,000 10,652,000 12,873,000 10,665,000 10,125,000 10,532,000 11,814,000 10,962,000 11,153,000 11,779,000 12,111,000 12,311,000 13,556,000 11,624,000   12,372,000 11,125,000 14,350,000 12,096,000 15,184,000 11,735,000 15,969,000 15,676,000 17,849,000 20,072,000 23,220,000 27,332,000 27,064,000 21,424,000 23,930,000 20,220,000 24,606,000 21,586,000 28,933,000 25,262,000 24,805,000 22,702,000 69,795,000 23,123,000 21,723,000 20,873,000 59,328,000 18,765,000 
      impairment on real estate
    90,083,000 57,373,000                                                                                      
      total operating expenses
    131,126,000 98,011,000 47,353,000 47,666,000 54,088,000 54,632,000 52,244,000 49,216,000 45,170,000 44,330,000 43,704,000 42,178,000 41,385,000 113,702,000 63,532,000 51,811,000 48,349,000 48,732,000 44,425,000 43,970,000 -411,636,000 201,686,000 186,868,000 188,890,000 193,404,000 191,200,000 184,096,000 188,821,000 165,958,000 195,527,000 200,826,000 194,343,000 237,946,000 195,430,000 189,386,000 188,692,000 189,399,000 190,172,000 186,782,000 182,705,000 180,391,000 182,366,000 179,140,000 179,140,000 183,198,000 178,370,000 179,376,000 180,621,000 183,751,000 156,430,000 186,635,000 195,138,000 197,643,000 189,293,000 216,717,000 222,857,000 230,604,000   231,244,000 245,079,000 243,790,000 254,869,000 255,245,000 267,542,000 195,347,000 319,593,000 297,535,000 307,290,000 299,956,000 324,266,000 334,288,000 363,054,000 346,511,000 349,540,000 342,970,000 351,298,000           
      interest income
    3,480,000 1,529,000 1,546,000 2,092,000 2,170,000 2,299,000 2,535,000 2,648,000 2,709,000 2,486,000 2,478,000 2,058,000         -10,297,000 3,041,000 2,843,000 4,523,000 2,809,000 2,824,000 3,065,000 2,726,000 3,146,000 2,712,000 2,884,000 2,172,000 2,081,000 2,047,000 2,012,000 2,192,000 1,956,000 2,163,000 1,843,000 1,835,000 1,782,000 1,737,000 1,705,000 1,705,000 1,725,000 1,691,000 1,787,000 1,671,000 1,729,000 3,396,000 3,587,000 2,651,000 6,425,000 2,825,000 2,079,000 2,477,000 2,554,000   2,254,000 2,248,000 3,588,000 2,389,000 1,928,000 3,224,000 1,712,000 1,962,000 2,264,000 3,340,000 2,882,000 5,349,000 718,000 8,583,000 13,879,000 9,930,000 9,242,000 9,607,000 12,106,000 7,580,000 5,600,000 7,135,000 24,080,000 7,371,000 7,420,000 7,518,000 22,249,000 10,221,000 
      interest expense
    -15,215,000 -14,033,000 -18,002,000 -17,438,000 -20,836,000 -19,031,000 -16,820,000 -13,370,000 -10,085,000 -8,252,000 -9,656,000 -9,725,000 -7,977,000 -9,719,000 -41,546,000 -14,601,000 -14,907,000 -12,680,000 -12,638,000 -12,677,000 113,145,000 -50,519,000 -48,802,000 -41,336,000 -45,846,000 -42,011,000 -39,541,000 -41,409,000 -57,441,000 -45,492,000 -49,906,000 -47,795,000 -49,193,000 -50,682,000 -46,858,000 -47,882,000 -50,484,000 -49,377,000 -48,894,000 -47,634,000 -48,275,000 -48,285,000 -49,605,000 -49,605,000 -53,520,000 -52,358,000 -57,806,000 -55,061,000 -55,641,000 -54,523,000 -61,726,000 -61,821,000 -62,494,000 -53,391,000 -64,585,000 -64,255,000 -71,851,000   -96,716,000 -76,381,000 -77,200,000 -77,917,000 -79,499,000 -80,314,000 -67,414,000 -83,179,000 -90,896,000 -91,511,000 -82,986,000 -94,611,000 -102,365,000 -107,436,000 -108,384,000 -106,654,000 -104,875,000 -106,007,000 -98,679,000 -105,889,000 -103,518,000 -102,275,000 -271,753,000 -96,107,000 -96,502,000 -94,211,000 -270,687,000 -95,930,000 
      realized and unrealized gains on interest rate contracts
    -37,000 -102,000 -72,000 -261,000 588,000 -1,148,000 640,000                                                                                 
      realized and unrealized gains on equity investments
    -315,000 -4,868,000 -210,000 -397,000 -1,403,000 -566,000 -47,264,000 -271,000 535,000 -1,066,000 1,094,000 137,000 150,000 -2,145,000 26,630,000                                                                         
      other income
    -4,551,000 923,000 -72,000 -479,000 1,254,000 -3,959,000 -1,286,000 -1,904,000 -2,042,000 -1,593,000 -1,413,000 -3,498,000 -11,630,000 -255,000 -1,413,000 -4,541,000 1,266,500 1,785,000                              3,638,000 2,390,000 1,611,250 2,215,000 2,226,000                                    
      income from continuing operations before income tax
    101,892,000 -79,430,000                                                                                      
      income tax benefit
    62,965,000 116,000 -5,571,000 85,000 2,340,000 3,814,000 2,188,000 2,730,000 1,929,000 6,210,000 417,000 4,196,000 7,074,000 17,563,000 -45,957,000 4,056,000 3,689,000 2,021,000 2,760,000 5,100,000 2,290,000 1,747,000 2,879,000 3,233,000 1,193,000 3,096,000 1,827,000 -2,981,000 -56,697,000 27,941,000 4,395,000 37,388,000 17,248,000 4,870,000 5,023,000 4,985,000 8,739,000 3,462,000 7,121,000 5,886,000 6,510,000 8,279,000 5,814,000 5,814,000 6,921,000 6,937,000 5,005,000 5,347,000 2,758,000 2,175,000 77,000 -116,000 -50,000 343,000 114,000 230,000 461,000   2,257,000 2,528,000 6,415,000 4,649,000 3,598,000 3,771,000 11,476,000 2,410,000 3,080,000 3,016,000                   
      net income from continuing operations
    164,857,000 -79,314,000                                                                                      
      income from discontinued operations, net of taxes
    153,806,000 382,306,000                                                                                      
      net income
    318,663,000 302,992,000 -16,976,000 -11,712,000 -7,636,000 -20,065,000 -61,103,000 -7,196,000 -153,367,000 1,674,000 144,000 -5,753,000 -205,338,000 34,173,000 253,211,000 10,112,000 -1,182,000 -4,846,000 -20,386,000 21,434,000 -33,137,000 -24,815,000 43,204,000 8,977,000 142,766,000 3,970,000 69,996,000 291,295,000 9,840,000 603,917,000 7,156,000 95,690,000 286,189,000 22,144,000 21,591,000 17,155,000 177,399,000 30,036,000 245,953,000 29,885,000 75,376,000 23,769,000 68,688,000 68,688,000 104,150,000 45,459,000 144,515,000 84,605,000 81,532,000 148,603,000 79,410,000 6,979,000 2,833,000 97,248,000 53,335,000 34,131,000 10,647,000   -26,971,000 -27,277,000 -34,212,000 -28,482,000 -10,170,000 -16,760,000 4,956,000 -9,556,000 -7,626,000 -32,569,000 8,171,000 175,799,000 256,039,000 -24,546,000 -12,281,000 -2,341,000 19,329,000 25,208,000 82,500,000 -24,875,000 35,092,000 84,071,000 44,630,000 26,352,000 27,566,000 2,032,000 100,289,000 163,208,000 
      yoy
    -4273.17% -1610.05% -72.22% 62.76% -95.02% -1298.63% -42532.64% 25.08% -25.31% -95.10% -99.94% -156.89% 17272.08% -805.18% -1342.08% -52.82% -96.43% -80.47% -147.19% 138.77% -123.21% -725.06% -38.28% -96.92% 1350.87% -99.34% 878.14% 204.42% -96.56% 2627.23% -66.86% 457.80% 61.33% -26.28% -91.22% -42.60% 135.35% 26.37% 258.07% -56.49% -27.63% -47.71% -52.47% -18.81% 27.74% -69.41% 81.99% 1112.28% 2777.94% 52.81% 48.89% -79.55% -73.39%   -226.55% -139.03%   165.20% 62.75% -790.31% 198.05% 33.36% -48.54% -39.35% -105.44% -102.98% 32.69% -166.53% -7609.57% 1224.64% -197.37% -114.89% -90.59% -44.92% -70.02% 84.85% -194.40% 27.30% 4037.35% -55.50% -83.85%     
      qoq
    5.17% -1884.83% 44.95% 53.38% -61.94% -67.16% 749.12% -95.31% -9261.71% 1062.50% -102.50% -97.20% -700.88% -86.50% 2404.06% -955.50% -75.61% -76.23% -195.11% -164.68% 33.54% -157.44% 381.27% -93.71% 3496.12% -94.33% -75.97% 2860.32% -98.37% 8339.31% -92.52% -66.56% 1192.40% 2.56% 25.86% -90.33% 490.62% -87.79% 723.00% -60.35% 217.12% -65.40% 0.00% -34.05% 129.11% -68.54% 70.81% 3.77% -45.13% 87.13% 1037.84% 146.35% -97.09% 82.33% 56.27% 220.57%    -1.12% -20.27% 20.12% 180.06% -39.32% -438.18% -151.86% 25.31% -76.59% -498.59% -95.35% -31.34% -1143.10% 99.87% 424.60% -112.11% -23.32% -69.44% -431.66% -170.89% -58.26% 88.37% 69.36% -4.40% 1256.59% -97.97% -38.55%  
      net income margin %
    Infinity% Infinity% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity% Infinity% Infinity% -Infinity% -Infinity% Infinity% Infinity% Infinity% -Infinity% -Infinity% -Infinity% Infinity% -Infinity% -Infinity% Infinity% Infinity% 62.06% 1.73% 31.22% 126.52% 4.24% 249.06% 2.86% 38.63% 112.13% 8.70% 8.67% 6.96% 71.10% 12.07% 97.90% 12.14% 30.66% 9.65% 28.06% 28.06% 42.64% 18.77% 58.55% 34.33% 32.75% 67.71% 31.20% 2.69% 1.11% 39.63% 19.94% 12.60% 3.89%  NaN% -9.60% -9.52% -12.41% -9.74% -3.45% -5.72% 2.12% -2.99% -2.28% -9.32% 2.73% 44.40% 60.42% -5.67% -2.78% -0.54% 4.41% 5.85% 20.42% -5.71% 8.07% 19.55% 45.35% 6.69% 6.92% 0.52% 107.23% 43.63% 
      net loss attributable to redeemable noncontrolling interests in consolidated real estate partnerships
    -3,826,000 -3,582,000 -3,156,000 -2,673,000 -3,141,000 -3,659,000 -3,598,000 -3,560,000 -3,464,000 -3,610,000 -3,576,000 -3,274,000 -3,383,000 -2,907,000 -1,069,000 -1,470,000                                                                        
      net loss attributable to noncontrolling interests in consolidated real estate partnerships
    -148,000 -105,000 -232,000 -296,000 450,000 572,000 811,000 16,000 -2,931,000 -447,000 -348,000 -264,000 -3,087,000 -240,000 -346,000 2,000 -274,000 -296,000                                                                      
      net loss attributable to common noncontrolling interests in aimco operating partnership
    -14,173,000 -12,592,000 1,059,000 765,000 507,000 1,216,000 3,364,000 554,000 8,263,000 123,000 178,000 474,000 10,717,000 -1,554,000 -12,659,000  88,000 253,000 1,037,000                                                                     
      net income attributable to aimco
    300,516,000 286,713,000 -19,305,000 -13,916,000 -9,820,000 -21,936,000 -60,526,000 -10,186,000 -151,499,000 -2,260,000 -3,602,000 -8,817,000 -201,091,000 29,472,000 239,137,000 8,209,000 -1,418,000 -5,016,000   5,242,500 -25,007,000 39,255,000 6,722,000 133,512,000 1,979,000 64,459,000 274,133,000 7,407,000 569,991,000 5,037,000 83,792,000 264,389,000 19,635,000 18,052,000 13,698,000 164,407,000 15,513,000 224,433,000 26,057,000 69,656,000 21,925,000 63,869,000 63,869,000 93,260,000 39,252,000 128,028,000 77,042,000 64,927,000 123,218,000 67,232,000 10,948,000 5,892,000 68,926,000 38,781,000 22,800,000 1,949,000   -23,451,000 -19,260,000 -21,463,000 -14,922,000 -7,825,000 -27,518,000 6,207,000 -27,502,000 -18,444,000 -24,530,000                   
      earnings per common share - basic
                                                                                           
      income from continuing operations attributable to aimco per common share
    1,150 -600                                                                                      
      income from discontinued operations attributable to aimco per common share
    1,000 2,640                                                                                      
      net income attributable to aimco per common share – basic
    2,150 2,040 -140 -100 -80 -160 -430 -70 -1,060 -20 -20 -60 -1,320 190 1,580 50 -10 -30 -130 140     900 10 400  50 3,620     100    1,420                                                 
      earnings per common share - diluted
                                                                                           
      net income attributable to aimco per common share – diluted
    2,070 2,040 -140 -100 -80 -160 -430 -70 -1,060 -20 -20 -60 -1,320 190 1,570 50 -10 -30 -130 140     890 10 400  60 3,610     100    1,410                                                 
      weighted-average common shares outstanding – basic
    138,347,000 138,946,000 137,341,000 136,903,000 138,496,000 136,749,000 139,816,000 140,594,000 143,618,000 143,299,000 144,195,000 145,827,000 149,395,000 149,611,000 149,600,000 149,790,000 149,480,000 149,762,000 149,166,000 148,914,000 148,569,000 148,544,000 148,535,000 148,518,000 147,718,000 148,434,000 148,367,000 144,232,000 155,866,000 156,711,000 156,703,000 156,609,000 156,323,000 156,306,000 156,305,000 156,259,000 156,001,000 156,079,000 156,375,000 155,791,000 155,177,000     145,639,000   145,473,000 145,291,000 145,334,000 145,321,000                                    
      weighted-average common shares outstanding – diluted
    141,057,000 138,946,000 137,341,000 136,903,000 138,496,000 136,749,000 139,816,000 140,594,000 143,618,000 143,299,000 144,195,000 145,827,000 150,834,000 151,197,000 150,423,000 150,348,000 149,480,000 149,762,000 149,166,000 149,046,000 148,569,000 148,544,000 148,553,000 148,786,000 147,944,000 148,636,000 148,599,000 144,445,000 156,053,000 156,938,000 156,833,000 156,740,000 156,796,000 156,835,000 156,715,000 156,754,000 156,391,000 156,527,000 156,793,000 156,117,000 155,570,000     146,002,000   145,681,000 145,532,000 145,563,000 145,674,000                                    
      income before income tax
      -11,405,000 -11,797,000 -9,976,000 -23,879,000 -63,291,000 -9,926,000 -155,296,000 -4,536,000 -273,000 -9,949,000 -212,412,000 16,610,000                                                                          
      gain on dispositions of real estate
            6,106,000  1,878,000          11,801,000  47,238,000 -34,000   64,310,000 291,473,000                                                            
      realized and unrealized gains on interest rate options
           1,672,000 -2,161,000 955,000 3,383,000 -1,057,000 200,000 9,209,000 20,017,000                                                                         
      income from unconsolidated real estate partnerships
           312,000 261,000 320,000 121,000 174,000         179,000 277,000 170,000 182,000                                                                
      mezzanine investment income
            -154,801,000 -757,000 -128,000 -128,000 -204,229,000 8,423,000 8,330,000 8,237,000 7,782,000 7,636,000 7,551,000 7,467,000 7,023,000 6,870,000 6,936,000 6,747,000                                                                
      lease modification income
                 1,577,000 205,387,000                                                                         
      gains on dispositions of real estate
                5,859,000 75,539,000 94,598,000                                                                         
      income before income tax benefit
                  299,168,000 6,056,000 -3,419,750 -6,867,000 -23,146,000 16,334,000 -35,427,000 -26,562,000 40,325,000 5,744,000 141,573,000 874,000 68,169,000 294,276,000                                                            
      unrealized gains on interest rate options
                   18,778,000 -4,099,000 2,231,000 -16,970,000 25,347,000                                                                    
      net income attributable to common noncontrolling interests in aimco operating partnership
                   -435,000    -1,081,000   -2,107,000 -368,000 -7,262,000 -116,000 -3,534,000 -15,137,000 -324,000 -30,198,000 -140,000 -3,755,000 -12,293,000 -820,000 -787,000 -557,000 -7,869,000 -192,000 -11,135,000 -1,172,000 -3,291,000 -893,000 -2,972,000 -2,972,000 -4,398,000 -1,875,000 -6,549,000 -3,735,000 -3,611,000 -1,167,000 -3,796,000      737,000   2,420,000 2,383,000 1,661,000 2,263,000 1,312,000 3,069,000    2,835,000                   
      noncontrolling interests:
                                                                                           
      net loss attributable to redeemable noncontrolling interest in consolidated real estate partnership
                    -10,250 -127,000 -66,000                                                                     
      other expenses
                      2,918,000                                                                     
      net (income) attributable to noncontrolling interests in consolidated real estate partnerships
                      -275,000                                                                     
      net income attributable to aimco common stockholders
                      -19,690,000 20,214,000 -25,886,000 -25,046,000 39,212,000 6,679,000 133,339,000 2,003,000 59,234,000 271,568,000 5,226,000 567,029,000 2,817,000 81,525,000 262,097,000 17,430,000 15,843,000 11,491,000 162,000,000 11,176,000 221,382,000 23,223,000 66,639,000 19,179,000 60,804,000 60,804,000 89,344,000 36,272,000 124,706,000 75,010,000 64,234,000 122,124,000 66,268,000 10,107,000 5,050,000 68,069,000 24,163,000 523,000 -10,609,000   -33,177,000 -31,773,000 -38,427,000 -28,500,000 -17,995,000 -40,440,000 -6,728,000 -40,490,000 -29,921,000 -37,696,000                   
      other incomes
                       363,000 -25,997,000 17,571,000 4,239,000 1,642,000 4,769,000 4,411,000 4,209,000 5,703,000 -9,846,000 5,780,000 4,366,000 2,958,000 4,544,000 2,344,000 2,727,000 1,738,000 5,656,000 1,543,000 5,526,000 1,570,000 2,847,000 3,590,000 2,912,000 2,912,000 1,019,000 5,367,000 1,408,000      2,224,000 4,262,000 5,230,000 427,000 6,269,000    3,928,000 7,885,000 4,394,000 -6,693,000 3,144,000 3,324,000 8,548,000 4,398,000 2,292,000 12,623,000 -3,944,000  5,061,000               
      net income attributable to redeemable noncontrolling interest in consolidated real estate partnership
                       152,000                                                                    
      net (income) loss attributable to noncontrolling interests in consolidated real estate partnerships
                       -291,000         -2,011,250 -1,794,000       -5,524,000 -12,489,000        -5,488,000 -8,337,000 -2,226,000 -11,389,000 -16,809,000 -6,776,000   -22,454,000 -11,334,000 -9,665,000 -7,765,000        -12,134,000                       
      investment management expenses
                        1,281,000 2,819,000 1,121,000 1,184,000            784,000 1,403,000 938,000 1,017,000 975,000 1,261,000 1,905,000 1,086,000 1,086,000 1,603,000 3,758,000 1,279,000 1,021,000 1,252,000 838,000 373,000 1,697,000 1,433,000 2,563,000 2,817,000 3,240,000 3,388,000   2,187,000 3,031,000 3,508,000 2,609,000 5,141,000 3,229,000 3,060,000 4,213,000 4,716,000 3,789,000 5,530,000 5,842,000 5,728,000 4,289,000               
      net income (income) attributable to noncontrolling interests in consolidated real estate partnerships
                        38,250 154,000 17,000  -25,750 58,000       -378,750 249,000       -1,020,500 785,000          6,150,000 4,962,000       2,771,000 7,305,000 11,506,000 11,213,000 2,716,000     6,273,000                   
      net income attributable to preferred noncontrolling interests in aimco operating partnership
                        -1,353,750 -1,687,000 -1,859,000 -1,869,000 -1,908,000 -1,933,000 -1,933,000 -1,934,000 -1,934,000 -1,934,000 -1,934,000 -1,937,000 -1,938,000 -1,938,000 -1,939,000 -1,949,000 -1,963,000 -1,842,000 -1,708,000 -1,726,000 -1,735,000 -1,736,000 -1,736,000 -1,736,000 -1,736,000 -1,689,000 -1,601,000 -1,602,000 -1,605,000 -1,605,000 -1,606,000 -1,606,000 -1,606,000 -1,606,000 -1,609,000 -1,611,000 -1,670,000   -1,671,000 -1,671,000   -1,683,000 -1,693,000 -1,730,000 -1,743,000 -1,746,000 -1,069,000                   
      net income (income) attributable to common noncontrolling interests in aimco operating partnership
                        1,403,000 1,341,000                                            758,000 3,139,000 2,623,000                    
      net income attributable to noncontrolling interests
                        -1,599,000 -192,000 -3,949,000 -2,255,000 -9,254,000 -1,991,000 -5,537,000 -17,162,000 -2,433,000 -33,926,000 -2,119,000 -11,898,000 -21,800,000 -2,509,000 -3,539,000 -3,457,000 -12,992,000 -14,523,000 -21,520,000 -3,828,000 -5,720,000 -1,844,000 -4,819,000 -4,819,000 -10,890,000 -6,207,000 -16,487,000   -1,287,500 -12,178,000                                     
      net income attributable to aimco preferred stockholders
                              -5,187,000 -2,148,000 -2,148,000 -2,148,000 -2,149,000 -2,148,000 -2,149,000 -2,148,000 -2,149,000 -2,148,000 -2,156,000 -4,323,000 -2,758,000 -2,757,000 -2,757,000 -2,757,000 -2,758,000 -2,758,000 -3,522,000 -2,860,000 -2,875,000 -1,758,000 -454,000 -699,000 -702,000 -701,000 -702,000 -752,000 -14,515,000 -22,182,000 -12,439,000   -9,672,000 -12,456,000 -16,964,000 -13,576,000 -10,128,000 -12,922,000 -12,935,000 -12,988,000 -11,477,000 13,166,000                   
      net (income) loss attributable to participating securities
                        -31,250 -39,000               -96,000 -14,000                                                  
      net income attributable to aimco per common share – basic and diluted
                        35 -170 260 40    1,880   20 520 72.5 110  70 410 70  150                                                
      net income attributable to participating securities
                          -43,000 -43,000   -38,000 -417,000 -33,000 -814,000 -71,000 -119,000 -143,000 -57,000 -60,000 -59,000   -293,000 -77,000   -307,000 -307,000 -394,000 -120,000 -447,000 -274,000 -239,000 -395,000 -262,000 -140,000 -140,000 -105,000 -103,000 -95,000 -119,000   -54,000 -57,000  -2,000 -42,000                        
      net income attributable to noncontrolling interests in consolidated real estate partnerships
                           -18,000   -70,000 -91,000   -45,000 -6,206,000   -813,000 -951,000   -8,677,000 -930,000   -111,000 -111,000 -4,756,000                     2,223,000 -19,342,000 -11,695,000                    
      rental and other property revenues attributable to real estate
                            230,032,000 229,827,000 224,200,000 230,235,000 232,022,000 234,048,000 231,130,000 225,393,000 231,509,000 233,708,000 227,703,000 225,228,000                                                    
      asset management business rental and tax credit revenues
                                                                                           
      total revenues
                            230,032,000 229,827,000 224,200,000 230,235,000 232,022,000 242,481,000 250,187,000 247,720,000 255,229,000 254,635,000 249,092,000 246,481,000 249,493,000 248,904,000 251,218,000 246,239,000 245,875,000 246,387,000 244,783,000 244,783,000 244,265,000 242,178,000 246,843,000 246,418,000 248,924,000 219,483,000 254,514,000 259,662,000 255,450,000 245,361,000 267,448,000 270,872,000 273,799,000   281,035,000 286,553,000 275,754,000 292,302,000 294,991,000 292,976,000 233,833,000 319,346,000 334,798,000 349,276,000 298,786,000 395,978,000 423,781,000 432,602,000 441,806,000 431,204,000 438,313,000 430,762,000 403,951,000 435,671,000 434,959,000 430,057,000 98,415,500 393,662,000 398,172,000 391,015,000 93,528,500 374,114,000 
      yoy
                            -0.86% -5.22% -10.39% -7.06% -9.09% -4.77% 0.44% 0.50% 2.30% 2.30% -0.85% 0.10% 1.47% 1.02% 2.63% 0.59% 0.66% 1.74% -0.83% -0.66% -1.87% 10.34% -3.01% -5.10% -2.55% -10.55% -4.84% -4.14% -6.70%   -3.62% -4.45%   -4.73% -2.19% 17.93% -8.47% -11.89% -16.12% -21.74% -19.35% -21.00% -19.26% -32.37% -8.17% -3.32% 0.43% 9.37% -1.03% 0.77% 0.16% 310.45% 10.67% 9.24% 9.98% 5.23% 5.23%     
      qoq
                            0.09% 2.51% -2.62% -0.77% -4.31% -3.08% 1.00% -2.94% 0.23% 2.23% 1.06% -1.21% 0.24% -0.92% 2.02% 0.15% -0.21% 0.66% 0.00% 0.21% 0.86% -1.89% 0.17% -1.01% 13.41% -13.76% -1.98% 1.65% 4.11% -8.26% -1.26% -1.07%    -1.93% 3.92% -5.66% -0.91% 0.69% 25.29% -26.78% -4.62% -4.15% 16.90% -24.54% -6.56% -2.04% -2.08% 2.46% -1.62% 1.75% 6.64% -7.28% 0.16% 1.14% 336.98% -75.00% -1.13% 1.83% 318.07% -75.00%  
      property operating expenses attributable to real estate
                            78,768,000 77,430,000 75,839,000 79,184,000 75,329,000 78,254,000 76,031,000 78,287,000 79,120,000 81,179,000 79,014,000 79,626,000                                                    
      property operating expenses of partnerships served by asset management business
                                56,000 2,608,000 9,062,000 9,195,000 8,995,000 8,865,000 8,382,000 8,694,000                                                    
      gain on dispositions of real estate and the asset management business
                            146,239,000 1,146,000                                                              
      other
                            147,750 288,000 231,000 72,000 -64,000 -283,000 200,000 224,000 92,000 6,937,000 200,000 465,000 530,000 558,000 4,906,000 77,000 -244,000 -1,983,000 350,000 350,000 2,264,000 -772,000 1,733,000 189,000 -1,979,000                                       
      net income (income) attributable to participating securities
                            -107,750 24,000               -172,500 11,000                                              
      rental and other property revenues of partnerships served by asset management business
                                 5,022,000 19,000,000 18,808,000 18,719,000 18,232,000 18,533,000 18,562,000                                                    
      tax credit and transaction revenues
                                 3,411,000 57,000 3,519,000 5,001,000 2,695,000 2,856,000 2,691,000                                                    
      operating income
                                37,423,000 46,954,000 49,361,000 53,377,000 17,283,000 59,205,000 59,706,000 57,789,000 60,094,000 58,732,000 64,436,000 63,534,000 65,484,000 64,021,000 65,643,000 65,643,000 61,067,000 63,808,000 67,467,000 65,797,000 65,173,000 63,053,000 67,879,000 64,524,000 57,807,000 56,068,000 50,731,000 48,015,000 43,195,000   49,791,000 41,474,000 31,964,000 37,433,000 39,746,000 25,434,000 38,486,000 -247,000 37,263,000 41,986,000 -1,170,000 71,712,000 89,493,000 69,548,000 95,295,000 81,664,000 95,343,000 79,464,000 67,612,000 87,521,000 95,588,000 88,967,000 227,850,000 71,591,000 84,259,000 78,708,000 244,260,000 84,498,000 
      yoy
                                116.53% -20.69% -17.33% -7.63% -71.24% 0.81% -7.34% -9.04% -8.23% -8.26% -1.84% -3.21% 7.23% 0.33% -2.70% -0.23% -6.30% 1.20% -0.61% 1.97% 12.74% 12.46% 33.80% 34.38% 33.83%   -3.57% 4.15%   25.27% 63.07% -16.95% -15255.06% 6.66% -39.42% -3389.40% -100.34% -58.36% -39.63% -101.23% -12.19% -6.14% -12.48% 40.94% -6.69% -0.26% -10.68% -70.33% 22.25% 13.45% 13.03% -6.72% -15.27%     
      qoq
                                -20.30% -4.88% -7.52% 208.84% -70.81% -0.84% 3.32% -3.84% 2.32% -8.85% 1.42% -2.98% 2.29% -2.47% 0.00% 7.49% -4.30% -5.42% 2.54% 0.96% 3.36% -7.11% 5.20% 11.62% 3.10% 10.52% 5.66% 11.16%    20.05% 29.75% -14.61% -5.82% 56.27% -33.91% -15681.38% -100.66% -11.25% -3688.55% -101.63% -19.87% 28.68% -27.02% 16.69% -14.35% 19.98% 17.53% -22.75% -8.44% 7.44% -60.95% 218.27% -15.03% 7.05% -67.78% 189.07%  
      operating margin %
    NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% 0% 0% 0% 0% 16.13% 19.36% 19.73% 21.55% 6.77% 23.25% 23.97% 23.45% 24.09% 23.60% 25.65% 25.80% 26.63% 25.98% 26.82% 26.82% 25.00% 26.35% 27.33% 26.70% 26.18% 28.73% 26.67% 24.85% 22.63% 22.85% 18.97% 17.73% 15.78%  NaN% 17.72% 14.47% 11.59% 12.81% 13.47% 8.68% 16.46% -0.08% 11.13% 12.02% -0.39% 18.11% 21.12% 16.08% 21.57% 18.94% 21.75% 18.45% 16.74% 20.09% 21.98% 20.69% 231.52% 18.19% 21.16% 20.13% 261.16% 22.59% 
      income before income taxes and gain on dispositions
                                3,602,000 3,891,000 2,539,000 7,978,000 -29,737,000 17,507,000 15,060,000 12,564,000 12,096,000 12,076,000 22,291,000 17,812,000 11,279,750 15,490,000 18,093,000 18,093,000 11,536,000                                           
      income before gain on dispositions
                                21,033,000 31,832,000 6,934,000 45,366,000 -12,489,000 22,377,000 20,083,000 17,549,000 20,835,000 15,538,000 29,412,000 23,698,000                                                
      gain on dispositions of real estate and the asset management business, inclusive of related income tax
                                155,657,750 572,085,000                                                          
      dividends declared per common share
                                285 380 380 380 270 360 360 360 247.5 330 330 330 220 300 300 300 280 195 260 260 260 180 240 240 240 140 200 180 180   120 120 100 100 100  200 100 100  2,360 2,810 600  2,910 600 600  1,200 600 600 600 2,400 600 600 600 1,800 600 
      gain on dispositions of real estate, inclusive of related income tax
                                  222,000 50,324,000                                                        
      gain on dispositions of real estate, inclusive of tax
                                    220,250 -233,000  -394,000                                                    
      gain on dispositions of real estate, net of tax
                                      1,508,000  156,564,000 14,498,000 216,541,000 6,187,000 50,119,000  44,781,000 44,781,000 85,693,000 26,153,000 126,329,000 66,662,000 69,492,000                                       
      tax credit and asset management revenues
                                        3,429,000 4,789,000 8,347,000 4,758,000 6,229,000 6,005,000 6,146,000 6,146,000 5,976,000 8,848,000 6,970,000 6,926,000 8,788,000 12,364,000 7,397,000 7,809,000 7,252,000                                   
      benefit from real estate impairment losses
                                                 407,000 1,413,000       -2,452,000 2,453,000 6,707,000 6,364,000             -579,750 -2,319,000 -2,518,000                
      income from continuing operations
                                            25,257,000 23,769,000 23,907,000 23,907,000 18,457,000 19,306,000 18,186,000 17,943,000 12,040,000 22,356,000 8,195,000 4,188,000 702,000 8,863,000 4,569,000 -11,461,000 -24,224,000   -43,440,000 -30,584,000 -41,945,000 -48,181,000 -36,333,000 -37,718,000 -37,336,000 -78,674,000 -47,769,000 -36,257,000 -143,858,000 63,995,000 -18,015,000 -26,213,000 -20,742,000 -17,804,000 -1,710,000 -7,296,000 -8,903,000 -36,348,000 -3,034,000 5,592,000 -19,455,000 -8,442,000 -1,799,000 -2,541,000 28,695,000 27,001,000 
      earnings attributable to aimco per common share – basic
                                                                                           
      earnings attributable to aimco per common share – diluted
                                                                                           
      earnings attributable to aimco per common share – basic and diluted
                                                                                           
      income before income taxes, discontinued operations and gain on dispositions
                                                 8,764,750 13,181,000 12,596,000 9,282,000                                       
      income from discontinued operations
                                                     126,247,000 71,215,000 2,791,000 2,131,000 88,385,000 48,766,000 45,592,000 34,871,000   16,469,000 3,307,000 7,733,000 19,699,000 26,163,000 20,958,000 42,292,000 69,118,000 40,143,000 3,688,000 152,029,000 111,804,000 274,054,000 1,667,000 8,461,000 15,463,000 21,039,000 32,504,000 91,403,000 11,473,000 38,126,000 78,479,000 64,085,000 34,794,000 29,365,000 4,573,000 75,551,000 136,207,000 
      net (income) loss attributable to noncontrolling interests
                                                   -7,563,000 -16,605,000                                       
      income from continuing operations attributable to aimco common stockholders
                                                    440 230 50 20  10 -70 -300 -300   -350 -300 -360 -360 -300 -440 -390 -640                     
      income from discontinued operations attributable to aimco common stockholders
                                                     610 410 50 30 490 240 300 210   70 30 30 110 150 90 330 290                     
      equity in income (losses) of unconsolidated real estate partnerships
                                                     21,000 277,000 104,000 524,000 -700,000 206,000          7,951,000                       
      gain on dispositions and other
                                                     -1,138,250 -1,899,000 -1,154,000 -1,510,000                                   
      income before income taxes and discontinued operations
                                                     20,181,000 8,118,000 4,304,000 752,000 8,520,000 4,455,000 -11,691,000 -24,685,000   -45,697,000 -33,112,000 -48,360,000 -52,830,000 -39,931,000 -41,489,000 -48,812,000 -81,084,000 -50,849,000 -39,273,000                   
      net (income) loss attributable to common noncontrolling interests in aimco operating partnership
                                                       -575,000 -297,000 -4,262,000 -1,611,000 -55,000                                
      net income (income) attributable to noncontrolling interests
                                                       3,969,000 3,059,000                                   
      weighted-average common shares outstanding – basic and diluted
                                                        145,169,000 134,479,000 144,959,000 127,395,000   119,312,000                             
      revenues:
                                                                                           
      asset management and tax credit revenues
                                                         6,920,250 10,696,000 8,914,000 8,071,000   7,651,000 9,236,000 11,993,000 9,707,000 9,596,000 4,257,000 17,384,000 10,325,000 12,606,000 9,539,000 16,841,000 32,755,000 38,175,000 12,852,000               
      operating expenses:
                                                                                           
      gain on dispositions of interests in unconsolidated real estate and other
                                                         1,251,000 16,024,000 4,314,000 2,180,000                               
      total noncontrolling interests
                                                         -28,322,000 -14,554,000 -11,331,000 -8,698,000   3,520,000 8,017,000 12,749,000 13,560,000 2,345,000 -10,758,000 1,251,000 -17,946,000 -10,818,000 8,039,000                   
      equity in losses of unconsolidated real estate partnerships
                                                           -2,242,000 -763,000     -12,541,000 -15,522,000   -4,091,000 -4,198,000      -1,029,000    -2,986,000 536,000 -169,000 -574,000 -1,863,000 -2,587,000 -552,000 -418,000 -902,000 -299,250 -1,197,000 
      earnings attributable to aimco per common share — basic and diluted
                                                                                           
      weighted-average common shares outstanding — basic and diluted
                                                            120,526,000    117,320,000 116,369,000    114,301,000    121,213,000                  
      other incomes (income)
                                                               5,222,000            5,459,000  6,795,000 -5,490,000 -4,272,000 2,191,000 -862,000 -30,000 2,279,000 666,000 -2,912,000 -3,402,000 -812,000 -717,000 3,627,000 -215,000 
      (benefit from) recovery of losses on notes receivable
                                                               -36,000  -71,000 -6,000                         
      equity in (losses) earnings of unconsolidated real estate partnerships
                                                               -1,798,000    -7,224,000      -857,750 -1,559,000 -843,000                
      gain on dispositions of unconsolidated real estate and other
                                                               808,000 1,212,000 5,235,000 924,000 4,970,000 2,642,000 3,914,000 3,345,000 3,750,000 10,862,000 -743,000 100,359,000 139,000 -44,000 4,875,000 5,841,000 639,000 20,422,000           
      weighted-average common shares outstanding, basic and diluted
                                                               119,156,000   116,434,000 116,323,000 116,035,000   115,510,000 115,099,000                   
      benefit from losses on notes receivable
                                                                -17,000    -426,000   -1,534,000 -150,000   -534,000 -1,159,000    -1,543,000         -168,000 -672,000 
      equity in (losses) income of unconsolidated real estate partnerships
                                                                -1,648,000                           
      earnings per common share — basic and diluted:
                                                                                           
      benefit from operating real estate impairment losses
                                                                 65,000 287,000   -22,337,000 21,676,000 4,988,000 -1,760,000                   
      impairment losses related to unconsolidated real estate partnerships
                                                                 -314,750 -131,000                     -275,000    
      net income (income) attributable to preferred noncontrolling interests in aimco operating partnership
                                                                 -823,000 84,000                         
      recovery of losses on notes receivable
                                                                   148,000  -113,000 1,233,000           -2,067,000 46,000 -502,000 -262,000 1,571,000 -206,000 -34,000 1,592,000   
      earnings per common share — basic and diluted
                                                                                           
      property management revenues, primarily from affiliates
                                                                     984,000 1,114,000 1,340,000 1,644,000 1,599,000 1,227,000 1,415,000 2,104,000 1,731,000 1,824,000 1,271,000 2,096,000 3,091,000 2,599,000 3,592,000 3,030,000 18,434,000 6,094,000 5,926,000 6,664,000 23,748,000 8,713,000 
      property management expenses
                                                                     454,000 510,000 472,000 1,433,000 1,367,000 1,560,000 1,187,000 1,271,000 753,000 1,190,000 2,072,000 1,206,000 1,285,000 984,000 2,151,000 492,000 5,374,000 1,918,000 1,829,000 2,521,000 6,793,000 2,406,000 
      weighted-average common shares outstanding, basic
                                                                      115,563,000                     
      weighted-average common shares outstanding, diluted
                                                                      115,563,000                     
      equity losses of unconsolidated real estate partnerships
                                                                       -1,696,000 -2,040,000                   
      income from continuing operations attributable to aimco
                                                                       -410 -330                   
      income from discontinued operations attributable to aimco
                                                                       150                    
      (benefit from) recoveries of losses on notes receivable
                                                                         -946,500 -2,093,000                 
      deficit distributions to minority partners
                                                                         -20,032,000 -17,798,000 -1,265,000 -4,148,000 -24,017,000 -11,958,000 -2,028,000 -1,270,000 -875,000 -14,072,000 -4,096,000 -2,251,000 -8,975,000 -2,977,000 -1,698,000 -1,472,000 -10,183,000 -7,824,000 
      income before minority interests and discontinued operations
                                                                         572,500 59,040,000 -17,175,000 -35,685,000 -25,384,000 -20,676,000 -1,484,000 -2,313,000 -5,222,250 -17,500,000 -3,457,000 -924,000       
      minority interests:
                                                                                           
      minority interest in consolidated real estate partnerships
                                                                         6,489,000 11,355,000 -2,352,000 6,969,000 2,806,000 1,195,000 -265,000 -5,726,000 -1,565,000 -23,611,000 -351,000 6,326,000 980,000 3,920,000 1,664,000 3,490,000 393,750 1,575,000 
      minority interest in aimco operating partnership, preferred
                                                                         -1,977,000 -1,962,000 -1,925,000 -1,782,000 -1,782,000 -1,782,000 -1,782,000 -1,782,000 -1,785,000 -1,785,000 -1,785,000 -1,798,000 -451,500 -1,806,000 -1,806,000 -1,812,000 -492,000 -1,968,000 
      minority interest in aimco operating partnership, common
                                                                         12,628,000 -4,438,000 3,437,000 4,285,000 3,618,000 3,459,000 1,821,000 2,525,000 2,644,000 6,548,000 2,559,000 1,988,000 851,250 3,405,000 2,676,000 2,946,000 -64,250 -257,000 
      total minority interests
                                                                         17,140,000 4,955,000 -840,000 9,472,000   -226,000 -4,983,000 -706,000 -18,848,000 423,000 6,516,000 1,379,750 5,519,000 2,534,000 4,624,000 -162,500 -650,000 
      net income attributable to preferred stockholders
                                                                         13,606,000 12,224,000 13,670,000 14,208,000 14,301,000 19,020,000 16,346,000 16,348,000 16,388,000 21,656,000 19,034,000 24,054,000 66,255,000 21,693,000 21,693,000 22,869,000 64,137,000 24,667,000 
      net income attributable to common stockholders
                                                                         -5,435,000 163,575,000 242,369,000 -38,754,000 -26,582,000 -21,361,000 2,983,000 8,860,000 66,112,000 -46,531,000 16,058,000 60,017,000 -21,625,000 4,659,000 5,873,000 -20,837,000 36,152,000 138,541,000 
      earnings per common share — basic:
                                                                                           
      earnings per common share — diluted:
                                                                                           
      weighted-average common shares outstanding
                                                                          89,650,000 87,790,000 90,973,000 99,629,000 95,017,000 95,973,000 95,971,000 95,758,000 96,061,000 96,071,000 95,183,000 93,894,000 94,041,000 93,807,000 93,448,000 93,118,000 93,247,000 
      weighted-average common shares and equivalents outstanding
                                                                          90,266,000 87,790,000 90,973,000 99,629,000 95,017,000 95,973,000 95,971,000 95,758,000 96,061,000 96,071,000 95,183,000 93,894,000 94,041,000 93,807,000 93,448,000 93,118,000 93,394,000 
      activity fees and asset management revenues
                                                                             34,201,000 12,747,000 15,178,000 11,630,000           
      activity and asset management expenses
                                                                             5,345,000 6,399,000 6,076,000 5,654,000 2,777,000 1,073,000 3,239,000 2,432,000 7,846,000 2,760,000 2,305,000 2,608,000 9,530,000 2,272,000 
      recoveries of losses on notes receivable
                                                                             -531,000 153,000             
      equity in earnings (losses) of unconsolidated real estate partnerships
                                                                             -427,500 348,000 930,000            
      recoveries of real estate impairment losses
                                                                                           
      total minority interests:
                                                                             -531,000 2,872,000             
      net income attributable to common unitholders
                                                                             -25 -220             
      recoveries of (provision) for losses on notes receivable
                                                                               -735,000            
      earnings per common share – basic:
                                                                                           
      earnings per common share – diluted:
                                                                                           
      activity fees and asset management revenues, primarily from affiliates
                                                                                 8,035,750 10,470,000 12,133,000 9,539,000 29,331,000 8,018,000 6,680,000 8,017,000 28,816,000 5,985,000 
      expenses:
                                                                                           
      total expenses
                                                                                 254,375,500 348,150,000 339,371,000 341,090,000 80,517,750 322,071,000 313,913,000 312,307,000 72,404,000 289,616,000 
      recovery of (impairment losses) related to real estate partnerships
                                                                                 203,250 -158,000 -15,000        
      gain on dispositions of real estate related to unconsolidated entities and other
                                                                                 5,349,250 7,641,000 4,060,000 9,696,000 8,392,000 8,097,000 2,915,000 1,858,000 29,496,000 39,138,000 
      impairment losses related to real estate partnerships
                                                                                    -71,000 -4,942,000 -1,178,000     
      income before minority interests, discontinued operations and cumulative effect of change in accounting principle
                                                                                     -26,364,000 -13,961,000 -4,333,000 -7,165,000 14,158,000 27,651,000 
      income before cumulative effect of change in accounting principle
                                                                                     44,630,000 26,352,000 27,566,000 2,032,000 104,246,000 163,208,000 
      cumulative effect of change in accounting principle
                                                                                           
      (impairment losses) recoveries related to unconsolidated real estate partnerships
                                                                                        -256,000   
      impairment loss on investment in unconsolidated real estate partnerships
                                                                                         -145,750 -583,000 
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 2004-12-31 2004-09-30 
                                                                                          
        assets
                                                                                          
        buildings and improvements
      1,143,707,000 1,379,865,000 1,372,255,000 1,348,925,000 1,691,608,000 1,657,258,000 1,638,190,000 1,593,802,000 1,546,503,000 1,467,732,000 1,391,963,000 1,322,381,000 1,248,005,000 1,269,624,000 1,323,647,000 1,257,214,000 1,202,279,000 1,107,929,000 1,050,817,000 995,116,000 7,006,395,000 6,928,584,000 6,967,143,000 6,868,543,000 6,848,162,000 6,570,710,000 6,493,539,000 6,552,065,000 6,503,956,000 6,407,863,000 6,349,549,000 6,174,149,000 6,264,146,000 6,179,005,000 6,181,617,000 6,627,374,000 6,481,206,000 6,283,998,000 6,525,006,000 6,446,326,000 6,421,572,000 6,349,056,000 6,304,829,000 6,259,318,000 6,069,042,000 6,169,512,000 6,342,221,000 6,332,723,000 6,481,745,000 6,511,811,000 6,450,361,000 6,390,253,000 6,593,894,000 6,773,507,000 6,851,120,000 6,959,172,000 6,993,515,000 7,278,391,000 7,328,734,000 7,419,643,000 7,461,121,000 7,491,474,000 7,479,480,000 7,999,462,000 8,231,111,000 8,568,442,000 8,552,635,000 8,752,890,000 9,275,563,000 9,740,883,000 9,724,669,000 9,732,036,000 9,486,611,000 9,612,545,000 9,561,537,000 9,690,408,000 9,621,985,000 9,668,850,000 8,690,782,000 8,692,623,000 8,976,192,000 8,852,661,000 8,588,649,000 8,423,560,000 
        land
      242,927,000 397,767,000 397,968,000 398,182,000 620,029,000 620,246,000 620,488,000 620,821,000 638,007,000 638,660,000 640,892,000 641,102,000 639,272,000 601,757,000 574,434,000 534,285,000 534,092,000 518,954,000 506,968,000 505,153,000 1,891,763,000 1,866,009,000 1,869,465,000 1,869,048,000 1,887,424,000 1,741,531,000 1,731,980,000 1,756,525,000 1,765,678,000 1,763,788,000 1,761,238,000 1,753,604,000 1,827,748,000 1,824,672,000 1,824,672,000 1,858,792,000 1,925,303,000 1,847,582,000 1,861,157,000 1,861,157,000 1,878,350,000 1,881,739,000 1,883,128,000 1,885,640,000 1,771,545,000 1,811,503,000 1,867,270,000 1,881,358,000 1,937,239,000 1,952,811,000 1,940,653,000 1,943,166,000 2,006,360,000 2,060,115,000 2,060,726,000 2,097,137,000 2,107,082,000 2,128,831,000 2,139,431,000 2,166,213,000 2,179,744,000 2,186,724,000 2,183,927,000 2,243,403,000 2,273,852,000 2,337,853,000 2,332,457,000 2,440,154,000 2,551,108,000 2,642,050,000 2,659,265,000 2,452,584,000 2,608,316,000 2,450,066,000 2,420,948,000 2,340,744,000 2,337,304,000 2,356,444,000 2,299,039,000 2,293,876,000 2,365,560,000 2,321,226,000 2,211,109,000 2,162,735,000 
        total real estate
      1,386,634,000 1,777,632,000 1,770,223,000 1,747,107,000 2,311,637,000 2,277,504,000 2,258,678,000 2,214,623,000 2,184,510,000 2,106,392,000 2,032,855,000 1,963,483,000 1,887,277,000 1,871,381,000 1,898,081,000 1,791,499,000 1,736,371,000 1,626,883,000 1,557,785,000 1,500,269,000 8,898,158,000 8,794,593,000 8,836,608,000 8,737,591,000 8,735,586,000 8,312,241,000 8,225,519,000 8,308,590,000 8,269,634,000 8,171,651,000 8,110,787,000 7,927,753,000 8,091,894,000 8,003,677,000 8,006,289,000 8,486,166,000 8,406,509,000 8,131,580,000 8,386,163,000 8,307,483,000 8,299,922,000 8,230,795,000 8,187,957,000 8,144,958,000 7,840,587,000 7,981,015,000 8,209,491,000 8,214,081,000 8,418,984,000 8,464,622,000 8,391,014,000 8,333,419,000 8,600,254,000 8,833,622,000 8,911,846,000 9,056,309,000 9,100,597,000 9,407,222,000 9,468,165,000 9,585,856,000 9,640,865,000 9,678,198,000 9,663,407,000 10,242,865,000 10,504,963,000 10,906,295,000 10,885,092,000 11,193,044,000 11,826,671,000 12,382,933,000 12,383,934,000 12,184,620,000 12,094,927,000 12,062,611,000 11,982,485,000 12,031,152,000 11,959,289,000 12,025,294,000 10,989,821,000 10,986,499,000 11,341,752,000 11,173,887,000 10,799,758,000 10,586,295,000 
        accumulated depreciation
      -336,748,000 -508,074,000 -513,868,000 -499,274,000 -623,913,000 -602,375,000 -597,380,000 -580,802,000 -564,686,000 -548,316,000 -545,604,000 -530,722,000 -516,857,000 -519,868,000 -576,243,000 -561,115,000 -545,499,000 -527,976,000 -511,615,000 -495,010,000 -2,858,174,000 -2,786,104,000 -2,810,949,000 -2,718,284,000 -2,684,694,000 -2,593,241,000 -2,581,666,000 -2,585,115,000 -2,538,979,000 -2,452,947,000 -2,596,457,000 -2,522,358,000 -2,549,197,000 -2,468,206,000 -2,496,667,000 -2,730,758,000 -2,650,831,000 -2,657,290,000 -2,858,642,000 -2,778,022,000 -2,719,651,000                                            
        net real estate
      1,049,886,000 1,269,558,000 1,256,355,000 1,247,833,000 1,687,724,000 1,675,129,000 1,661,298,000 1,633,821,000 1,619,824,000 1,558,076,000 1,487,251,000 1,432,761,000 1,370,420,000 1,351,513,000 1,321,838,000 1,230,384,000 1,190,872,000 1,098,907,000 1,046,170,000 1,005,259,000 6,039,984,000 6,008,489,000 6,025,659,000 6,019,307,000 6,050,892,000 5,719,000,000 5,643,853,000 5,723,475,000 5,730,655,000 5,718,704,000 5,514,330,000 5,405,395,000 5,542,697,000 5,535,471,000 5,509,622,000 5,755,408,000 5,755,678,000 5,474,290,000 5,527,521,000 5,529,461,000 5,580,271,000 5,564,185,000 5,484,023,000 5,472,779,000 5,224,875,000 5,264,939,000 5,369,420,000 5,391,209,000 5,510,043,000 5,540,513,000 5,497,884,000 5,512,654,000 5,751,208,000 5,944,794,000 6,004,802,000 6,179,415,000 6,262,701,000 6,417,197,000 6,533,253,000 6,685,389,000 6,810,113,000 6,913,370,000 6,962,361,000 7,439,829,000 7,692,947,000 8,022,385,000 8,102,368,000 8,370,999,000 8,864,524,000 9,285,468,000 9,348,692,000 9,227,619,000 9,189,708,000 9,116,359,000 9,081,218,000 9,136,332,000 9,151,949,000 9,255,703,000  8,786,703,000 9,148,380,000 9,060,996,000  8,651,356,000 
        cash and cash equivalents
      404,379,000 41,385,000 49,147,000 141,072,000 82,620,000 88,539,000 121,814,000 122,601,000 95,680,000 164,990,000 166,149,000 206,460,000 206,366,000 81,799,000 109,011,000 233,374,000 253,138,000 286,066,000 226,081,000 289,582,000 228,368,000 398,408,000 340,883,000 142,902,000 58,724,000 33,958,000 162,286,000 36,858,000 58,032,000 46,703,000 51,894,000 60,498,000 38,780,000 44,869,000 45,876,000 61,244,000 47,908,000 55,225,000 64,454,000 50,789,000 45,241,000 46,835,000 164,490,000 28,971,000 29,186,000 33,826,000 38,402,000 55,751,000 67,622,000 46,923,000 49,558,000 84,413,000 102,515,000 312,964,000 83,234,000 75,831,000 85,324,000 81,360,000 111,325,000 145,062,000 78,318,000 77,875,000 81,260,000 107,034,000 112,114,000 93,233,000 299,676,000 219,047,000 330,163,000 163,083,000 210,461,000 337,494,000 258,027,000 257,160,000 229,824,000 182,283,000 323,463,000 224,327,000 161,730,000 139,636,000 148,779,000 119,629,000 105,343,000 122,570,000 
        restricted cash
      20,679,000 26,428,000 27,575,000 31,367,000 27,788,000 20,859,000 18,589,000 16,666,000 20,205,000 27,375,000 22,485,000 23,306,000 19,075,000 12,510,000 68,612,000 11,208,000 9,623,000 9,167,000 9,224,000 9,153,000 40,123,000 44,100,000 33,933,000 34,800,000 34,501,000 31,949,000 36,103,000 35,737,000 46,267,000 41,117,000 38,999,000 34,827,000 47,565,000 39,331,000 42,604,000 69,906,000 109,511,000 375,092,000 90,158,000 86,956,000 93,230,000 89,083,000 95,428,000 91,445,000 166,024,000 223,580,000 160,816,000 127,037,000 130,511,000 123,112,000 156,143,000 146,859,000 158,649,000 168,864,000 173,963,000 209,481,000 196,426,000 199,241,000 201,406,000 216,369,000 211,795,000 221,062,000 220,037,000 246,764,000 257,432,000 265,639,000 258,303,000 306,999,000 316,892,000 302,015,000 318,959,000 306,450,000 332,955,000 314,734,000 347,506,000 348,320,000 341,267,000 355,175,000 284,834,000 314,585,000 277,303,000 270,012,000 269,368,000 269,223,000 
        notes receivable
      60,150,000 59,847,000 59,360,000 58,794,000 58,229,000 57,660,000 58,187,000 57,554,000 39,802,000 39,533,000 39,363,000 39,014,000    38,029,000    37,045,000                            3,145,000 215,821,000 217,013,000 102,748,000 102,897,000 103,288,000 102,798,000 110,259,000 114,630,000                             
        right-of-use lease assets - finance leases
      106,758,000 107,077,000 107,395,000 107,714,000 108,034,000 108,353,000 108,673,000 108,992,000 109,311,000 109,631,000 110,625,000                                                                          
        other assets
      83,152,000 89,623,000 97,004,000 94,051,000 103,177,000 106,574,000 122,976,000 121,461,000 176,043,000 128,640,000 127,894,000 132,679,000 180,641,000 251,089,000 181,061,000 110,019,000 171,317,000 152,159,000 178,475,000 63,334,000 383,298,000 376,723,000 361,298,000 351,472,000 395,061,000 455,897,000 441,527,000 351,541,000 350,067,000 365,564,000 371,152,000 272,739,000 247,722,000 247,591,000 246,066,000 344,915,000 329,782,000 360,669,000 460,080,000 473,918,000 478,961,000 457,591,000 465,332,000 476,727,000 470,328,000 500,877,000 514,514,000 502,271,000 513,409,000 513,248,000 529,583,000 520,537,000 328,464,000 338,664,000 359,442,000 250,296,000 239,797,000 188,529,000 170,663,000 180,592,000 184,671,000 201,391,000 185,890,000 204,405,000 222,081,000 199,203,000 196,671,000 202,029,000 192,851,000 205,181,000 207,857,000 208,265,000 199,321,000 195,402,000 231,950,000 233,259,000 221,155,000 214,076,000 216,863,000 239,245,000 263,026,000 263,912,000 287,381,000 309,568,000 
        assets from discontinued operations and held for sale
      351,765,000                                                                                    
        total assets
      2,076,769,000 1,869,810,000 1,872,765,000 1,956,910,000 2,067,572,000 2,057,114,000 2,119,891,000 2,089,475,000 2,250,866,000 2,216,352,000 2,189,175,000 2,181,223,000 2,296,244,000 2,419,412,000 2,593,844,000 2,434,101,000 2,394,195,000 2,312,139,000 2,217,890,000 1,840,492,000 7,042,129,000 7,121,147,000 7,048,245,000 6,828,739,000 6,539,178,000 6,240,804,000 6,283,769,000 6,190,004,000 6,185,021,000 6,544,356,000 6,255,290,000 6,079,040,000 6,169,338,000 6,199,202,000 6,187,440,000 6,232,818,000 6,293,847,000 6,274,228,000 6,142,213,000 6,144,194,000 6,217,662,000 6,157,694,000 6,215,453,000 6,097,028,000 5,937,463,000 6,078,665,000 6,083,152,000 6,079,413,000 6,489,506,000 6,470,715,000 6,370,393,000 6,401,380,000 6,565,388,000 6,947,106,000 6,823,630,000 7,042,702,000 7,164,972,000 7,261,832,000 7,378,566,000 7,617,072,000 7,707,801,000 7,885,080,000 7,906,468,000 8,474,538,000 8,841,421,000 9,082,218,000 9,403,157,000 9,897,215,000 10,326,678,000 10,551,763,000 10,606,532,000 10,519,010,000 10,399,641,000 10,306,066,000 10,289,775,000 10,221,365,000 10,392,396,000 10,365,780,000  10,263,056,000 10,421,366,000 10,330,494,000  10,184,975,000 
        liabilities and equity
                                                                                          
        non-recourse property debt
      444,847,000 685,031,000 685,226,000 685,420,000 844,779,000 845,237,000 845,671,000 846,298,000 869,586,000 869,974,000 929,291,000 929,501,000 859,593,000 801,434,000 512,301,000 483,137,000 485,116,000 427,881,000 429,873,000 447,967,000 4,058,295,000 4,543,743,000 4,208,687,000 4,230,590,000 4,254,710,000 3,702,487,000 3,859,023,000   224,112,000 225,502,000 227,141,000 228,382,000 229,631,000 230,882,000 3,866,702,000 3,760,761,000 3,795,098,000 3,811,510,000 3,846,160,000 3,807,699,000 3,818,487,000 3,888,284,000 4,022,809,000 3,947,786,000 4,152,802,000 4,284,763,000 4,337,785,000 4,530,971,000 4,656,497,000 4,664,260,000 4,688,447,000 4,871,981,000 5,090,443,000 5,133,795,000 5,233,525,000                             
        non-recourse construction loans and bridge financing
      383,685,000                                                                                    
        total indebtedness
      828,532,000 1,098,432,000 1,082,995,000 1,070,660,000 1,250,619,000 1,211,315,000 1,182,003,000 1,147,741,000 1,120,216,000 1,065,662,000 1,084,982,000 1,048,199,000 940,409,000 1,148,188,000 1,226,990,000 1,180,834,000 1,157,682,000 1,076,317,000 964,000,000 982,094,000 4,406,797,000 4,892,183,000 4,802,532,000 4,505,590,000 4,254,710,000 3,997,447,000 3,929,023,000         3,884,632,000 4,055,541,000 3,955,638,000 3,917,590,000 3,873,160,000 3,935,899,000 3,866,007,000 3,888,284,000 4,135,139,000 3,962,236,000 4,206,202,000 4,394,823,000 4,388,185,000 4,829,521,000 4,843,547,000 4,713,460,000  4,938,181,000  5,201,195,000 5,259,725,000 5,369,624,000 5,440,579,000 5,504,801,000 5,542,562,000 5,643,911,000 5,718,957,000 5,690,310,000 6,172,596,000 6,486,805,000 6,735,169,000 6,777,121,000 6,865,731,000 7,428,090,000 7,780,964,000 7,531,782,000 7,371,308,000 7,158,631,000 7,066,733,000 6,872,753,000 6,788,975,000 6,606,819,000 6,654,284,000  6,291,282,000 6,499,844,000 6,359,206,000  6,003,100,000 
        deferred tax liabilities
      102,766,000 102,187,000 101,721,000 101,457,000 103,180,000 106,537,000 108,487,000 110,284,000 112,068,000 113,969,000 114,883,000 119,615,000 121,344,000 136,950,000 123,641,000 124,747,000 126,851,000 128,279,000 125,732,000 131,560,000                                                                 
        lease liabilities - finance leases
      124,403,000 123,664,000 122,882,000 121,845,000 121,277,000 120,353,000 119,269,000 118,697,000 117,666,000 116,593,000 116,212,000 114,625,000                                                                         
        dividends payable
      333,480,000 998,000 1,006,000 89,182,000                                                                                 
        accrued liabilities and other
      97,707,000 102,239,000 101,276,000 100,849,000 125,140,000 126,155,000 131,554,000 90,125,000 111,049,000 118,744,000 97,220,000 106,600,000 125,132,000 133,653,000 114,761,000 81,662,000 95,943,000 91,496,000 95,733,000 57,091,000 356,538,000 353,787,000 349,099,000 360,574,000 397,216,000 299,313,000 293,279,000 226,230,000 242,782,000 216,789,000 207,202,000 200,540,000 207,533,000 203,997,000 202,929,000 212,318,000 212,046,000 206,104,000 305,604,000 318,975,000 324,746,000 280,118,000 270,204,000 279,077,000 288,688,000 282,531,000 289,615,000 287,595,000 328,910,000 334,473,000 319,417,000 318,669,000 235,881,000 238,271,000 285,409,000 278,606,000 228,396,000 226,298,000 250,106,000 289,429,000 279,063,000 293,255,000 286,328,000 295,955,000 292,110,000 291,081,000 411,114,000 395,110,000 366,197,000 333,929,000 449,485,000 434,618,000 300,373,000 281,654,000 410,071,000 406,306,000 396,474,000 384,516,000 421,225,000 401,817,000 400,333,000 403,324,000 400,971,000 375,081,000 
        liabilities related to discontinued operations and assets held for sale
      334,624,000                                                                                    
        total liabilities
      1,821,512,000 1,587,362,000 1,570,211,000 1,644,613,000 1,600,216,000 1,564,360,000 1,541,313,000 1,497,865,000 1,495,401,000 1,448,945,000 1,413,297,000 1,389,039,000 1,285,352,000 1,542,576,000 1,974,627,000 1,838,074,000 1,829,362,000 1,746,740,000 1,632,427,000 1,277,138,000 4,821,512,000 5,245,970,000 5,151,631,000 4,866,164,000 4,651,926,000 4,296,760,000 4,222,302,000 4,325,072,000 3,889,571,000 4,788,239,000 4,491,265,000 4,321,750,000 4,632,112,000 4,619,566,000 4,249,457,000 4,184,651,000 4,363,039,000 4,269,189,000 4,320,947,000 4,292,363,000 4,380,961,000 4,251,667,000 4,292,885,000 4,566,986,000 4,414,999,000 4,649,938,000 4,822,580,000 4,826,716,000 5,314,377,000 5,327,673,000 5,181,764,000 5,166,440,000 5,382,333,000 5,497,483,000 5,659,357,000 5,748,203,000 5,830,249,000 5,881,429,000 5,968,366,000 6,050,727,000 6,148,093,000 6,269,361,000 6,255,109,000 6,769,640,000 7,109,841,000 7,291,898,000 7,548,091,000 7,801,665,000 8,192,885,000 8,471,778,000 8,301,787,000 8,079,024,000 7,708,010,000 7,588,149,000 7,552,287,000 7,442,232,000 7,200,772,000 7,224,339,000  6,988,001,000 7,087,815,000 6,955,125,000  6,726,354,000 
        redeemable noncontrolling interests in consolidated real estate partnerships
      151,666,000 146,106,000 146,391,000 142,931,000 175,309,000 174,849,000 173,158,000 171,632,000 170,201,000 168,648,000 167,129,000 166,826,000 158,135,000 51,814,000 37,232,000 33,794,000                                                                     
        commitments and contingencies
                                                                                          
        equity
                                                                                          
        common stock, 0.01 par value...
      1,402,000 1,374,000 1,372,000 1,364,000 1,369,000 1,372,000 1,402,000 1,406,000 1,420,000 1,438,000 1,448,000 1,466,000 1,492,000 1,492,000 1,497,000 1,498,000 1,498,000 1,496,000 1,491,000 1,490,000 1,489,000 1,489,000 1,487,000 1,489,000 1,489,000 1,488,000 1,488,000 1,491,000 1,574,000 1,574,000 1,573,000 1,572,000 1,570,000 1,570,000 1,570,000 1,569,000 1,569,000 1,566,000 1,566,000 1,563,000 1,564,000 1,563,000 1,563,000 1,464,000 1,462,000 1,462,000 1,461,000 1,459,000 1,459,000 1,459,000 1,459,000 1,456,000 1,456,000 1,442,000 1,214,000                              
        additional paid-in capital
      431,613,000 426,730,000 426,309,000 425,002,000 437,337,000 439,168,000 460,907,000 464,538,000 472,261,000 483,258,000 489,304,000 496,482,000 514,341,000 515,065,000 523,455,000 521,842,000 518,913,000 517,540,000 516,051,000 515,127,000 4,000,925,000 3,491,277,000 3,488,611,000 3,497,367,000 3,497,333,000 3,498,629,000 3,495,295,000 3,515,641,000 3,888,312,000 3,887,260,000 3,885,279,000 3,900,042,000 3,898,441,000 3,897,621,000 4,051,645,000 4,051,722,000 4,052,649,000 4,066,476,000 4,068,196,000 4,064,659,000 4,064,729,000 4,064,959,000 4,065,411,000 3,696,143,000 3,694,101,000 3,692,854,000 3,700,369,000 3,701,339,000 3,704,393,000 3,704,026,000 3,716,564,000 3,712,684,000 3,714,674,000 3,683,764,000 3,071,523,000 3,106,079,000 3,095,994,000 3,084,572,000 3,070,882,000 3,076,772,000 3,079,230,000 3,075,547,000 3,072,665,000 3,067,299,000 3,065,080,000 3,061,099,000 3,056,550,000 2,850,649,000 2,740,890,000 2,888,707,000 3,049,417,000 3,018,466,000 3,060,683,000 3,079,469,000 3,095,430,000 3,063,361,000 3,131,677,000 3,128,531,000 3,105,961,000 3,104,279,000 3,090,545,000 3,085,341,000 3,070,073,000 3,068,069,000 
        retained earnings
      -371,027,000 -336,454,000 -317,195,000 -303,409,000 -208,940,000 -187,004,000 -126,478,000 -116,292,000 35,207,000 37,486,000 41,087,000 49,904,000 250,996,000 224,567,000     3,375,000                                                                  
        total aimco equity
      61,988,000 91,650,000 110,486,000 122,957,000 229,766,000 253,536,000 335,831,000 349,652,000 508,888,000 522,182,000 531,839,000 547,852,000 766,829,000 741,124,000 510,381,000 500,565,000 499,034,000 502,721,000 520,917,000 499,778,000 2,121,391,000 1,698,012,000 1,717,455,000 1,780,649,000 1,705,459,000 1,763,218,000 1,883,636,000 1,699,419,000 2,125,682,000 1,614,941,000 1,670,190,000 1,663,144,000 1,454,186,000 1,494,502,000 1,688,136,000 1,793,903,000 1,682,907,000 1,771,156,000 1,603,162,000 1,622,391,000 1,601,690,000 1,628,910,000 1,615,527,000 1,227,735,000 1,228,251,000 1,140,102,000 983,096,000 967,457,000 882,147,000 851,371,000 888,380,000 915,425,000 875,672,000 1,147,640,000 862,019,000 951,312,000 979,300,000 1,014,440,000 1,046,042,000 1,193,770,000 1,139,738,000 1,167,289,000 1,239,718,000 1,260,388,000 1,311,396,000 1,384,578,000                   
        noncontrolling interests in consolidated real estate partnerships
      39,420,000 39,665,000 39,600,000 39,560,000 49,544,000 50,280,000 51,333,000 51,265,000 48,703,000 48,472,000 48,321,000 48,294,000 45,517,000 44,665,000 44,629,000 35,213,000 35,014,000 31,847,000 31,884,000 31,877,000 -60,212,000 -3,190,000 -3,409,000 -3,296,000 1,500,000 -2,718,000 -2,857,000 -2,967,000 -1,605,000 -2,984,000 -2,755,000 -1,716,000 -2,955,000 -2,609,000 153,242,000 151,121,000 150,086,000 150,257,000 142,742,000 151,365,000 164,439,000 205,123,000 235,750,000 233,296,000 234,076,000 233,064,000 223,806,000 233,008,000 245,735,000 246,793,000 253,474,000 271,065,000 264,286,000 258,647,000 256,366,000 279,997,000 289,865,000 300,607,000 291,458,000 301,119,000 341,707,000 357,618,000 316,177,000 340,581,000 311,384,000 323,414,000                   
        common noncontrolling interests in aimco operating partnership
      2,183,000 5,027,000 6,077,000 6,849,000 12,737,000 14,089,000 18,256,000 19,061,000 27,673,000 28,105,000 28,589,000 29,212,000 40,411,000 39,233,000 26,975,000 26,455,000 26,481,000 26,654,000 28,551,000 27,436,000 75,618,000 79,414,000 81,502,000 83,442,000 79,115,000 82,366,000 79,493,000 67,189,000 70,053,000 42,828,000 -4,788,000 -5,675,000 -15,542,000 -13,794,000 -5,001,000 -58,000 -5,386,000 -2,572,000 -10,839,000 -9,851,000 -17,365,000 -15,948,000 -16,651,000 -18,926,000 -18,772,000 -23,356,000 -25,451,000 -27,721,000 -32,722,000 -35,106,000 -33,255,000 -31,596,000 -36,980,000 -37,065,000 -37,477,000 -30,195,000 -27,829,000 -38,048,000 -30,728,000 -32,081,000 -28,126,000 -25,671,000 -21,192,000 -12,696,000 -8,486,000 -4,919,000                   
        total equity
      103,591,000 136,342,000 156,163,000 169,366,000 292,047,000 317,905,000 405,420,000 419,978,000 585,264,000 598,759,000 608,749,000 625,358,000 852,757,000 825,022,000 581,985,000 562,233,000 560,529,000 561,222,000 581,352,000 559,091,000 2,136,797,000 1,774,236,000 1,795,548,000 1,860,795,000 1,786,074,000 1,842,866,000 1,960,272,000 1,763,641,000 2,194,130,000 1,654,785,000 1,662,647,000 1,655,753,000 1,435,689,000 1,478,099,000 1,836,377,000 1,944,966,000 1,827,607,000 1,918,841,000 1,735,065,000 1,763,905,000 1,748,764,000 1,818,085,000 1,834,626,000 1,442,105,000 1,443,555,000 1,349,810,000 1,181,451,000 1,172,744,000 1,095,160,000 1,063,058,000 1,108,599,000 1,154,894,000 1,102,978,000 1,369,222,000 1,080,908,000 1,201,114,000 1,241,336,000 1,276,999,000 1,306,772,000 1,462,808,000 1,453,319,000 1,499,236,000 1,534,703,000 1,588,273,000 1,614,294,000 1,703,073,000                   
        total liabilities and equity
      2,076,769,000 1,869,810,000 1,872,765,000 1,956,910,000 2,067,572,000 2,057,114,000 2,119,891,000 2,089,475,000 2,250,866,000 2,216,352,000 2,189,175,000 2,181,223,000 2,296,244,000 2,419,412,000 2,593,844,000 2,434,101,000 2,394,195,000 2,312,139,000 2,217,890,000 1,840,492,000 7,042,129,000 7,121,147,000 7,048,245,000 6,828,739,000 6,539,178,000 6,240,804,000 6,283,769,000 6,190,004,000 6,185,021,000 6,544,356,000 6,255,290,000 6,079,040,000 6,169,338,000 6,199,202,000 6,187,440,000 6,232,818,000 6,293,847,000 6,274,228,000 6,142,213,000 6,144,194,000 6,217,662,000 6,157,694,000 6,215,453,000 6,097,028,000 5,937,463,000 6,078,665,000 6,083,152,000 6,079,413,000 6,489,506,000 6,470,715,000 6,370,393,000 6,401,380,000 6,565,388,000 6,947,106,000 6,823,630,000 7,042,702,000 7,164,972,000 7,261,832,000 7,378,566,000 7,617,072,000 7,707,801,000 7,885,080,000 7,906,468,000 8,474,538,000 8,841,421,000 9,082,218,000                   
        assets held for sale
       275,892,000 275,929,000 276,079,000                 50,030,000       42,393,000  94,314,000  17,959,000    1,345,000 50,968,000 8,952,000  3,070,000 19,959,000  6,180,000 27,106,000 47,050,000 55,443,000   19,175,000    46,475,000 9,030,000 10,751,000  23,713,000 10,502,000  5,179,000 6,050,000 35,184,000 33,726,000 29,758,000 100,729,000 17,258,000 67,160,000 303,829,000 145,670,000 98,761,000 24,336,000 21,883,000 12,420,000 39,865,000  11,163,000 32,981,000 4,752,000 54,958,000 214,132,000 27,940,000 43,563,000 53,275,000 264,541,000 
        non-recourse construction loans
       370,601,000 397,769,000 385,240,000 405,840,000 366,078,000 336,332,000                                                                              
        revolving credit facility
       42,800,000                                                                                   
        liabilities related to assets held for sale
       159,842,000 160,331,000 160,620,000                 58,177,000       23,177,000  68,610,000      1,658,000 1,018,000 6,214,000  53,000 17,311,000  6,855,000 28,969,000 37,056,000 30,753,000   17,118,000    46,729,000 8,618,000 12,039,000  24,177,000 4,066,000  6,491,000 3,276,000 26,708,000 30,403,000 48,153,000 72,570,000 5,176,000 56,341,000 267,890,000 113,723,000 72,544,000 11,867,000 12,373,000 8,546,000 27,734,000  958,000 18,135,000 5,779,000 39,464,000 156,703,000 32,871,000 44,224,000 50,829,000 209,023,000 
        interest rate options
            5,072,000 5,255,000 9,161,000 8,998,000 60,508,000 62,387,000 61,448,000 51,286,000 44,414,000 25,657,000                                                                     
        unconsolidated real estate partnerships
            23,282,000 23,125,000 22,667,000 20,808,000 16,470,000 15,789,000    13,025,000    12,829,000                                                                 
        mezzanine investment
              158,173,000 158,301,000 158,430,000 158,558,000 362,788,000 354,365,000 346,034,000 337,797,000 330,016,000 322,380,000 314,829,000 307,362,000 300,326,000 293,427,000 286,472,000 280,258,000                                                             
        construction loans
             301,443,000 250,630,000 195,688,000 155,691,000 118,698,000 80,816,000 199,715,000 180,562,000 163,570,000 138,439,000 114,309,000                                                                   
        mezzanine investment - participation sold
             31,018,000 34,402,000 33,977,000                                                                           
        right-of-use lease assets- finance leases
                 110,269,000                                                                         
        notes payable to air
                   147,039,000 534,127,000 534,127,000 534,127,000 534,127,000 534,127,000 534,127,000                                                                 
        right-of-use lease assets
                  95,506,000 130,532,000 522,874,000 429,768,000 439,229,000 443,460,000 443,111,000 98,280,000                                                                 
        lease liabilities
                  98,467,000 123,785,000 509,235,000 435,093,000 448,886,000 450,648,000 446,962,000 100,496,000                                                                 
        equity:
                                                                                          
        receivable from lease termination
                   186,318,000                                                                       
        accumulated deficit
                    -14,571,000 -22,775,000 -21,377,000 -16,315,000  -16,839,000                                                                 
        due from affiliates
                     4,840,000    4,333,000                                                                 
        due to affiliates
                     15,738,000    5,897,000                                                                 
        redeemable noncontrolling interest in consolidated real estate partnership
                      4,304,000 4,177,000 4,111,000 4,263,000                                                                 
        interest rate option
                         13,315,000                                                                 
        aimco predecessor equity
                                                                                          
        term loan
                          348,502,000 348,440,000        249,801,000 249,729,000 249,501,000 249,252,000 249,040,000                               350,000,000                 300,000,000   
        revolving credit facility borrowings
                            593,845,000 275,000,000  294,960,000 70,000,000 160,360,000  220,170,000 78,635,000 67,160,000 356,220,000 245,720,000 69,700,000 17,930,000 294,780,000 160,540,000 106,080,000 27,000,000 128,200,000 47,520,000  112,330,000 14,450,000 53,400,000 110,060,000 50,400,000 298,550,000 187,050,000 49,200,000  66,200,000  67,400,000 26,200,000 21,500,000                            
        redeemable preferred op units
                          79,449,000 96,449,000 96,449,000                                                              
        redeemable noncontrolling interests in consolidated real estate partnership
                          4,371,000 4,492,000 4,617,000 4,716,000                                                             
        accumulated other comprehensive income
                          3,579,000 3,807,000 4,139,000 4,195,000 4,488,000 4,866,000 4,851,000 4,794,000 4,850,000 3,208,000 3,544,000 3,603,000 1,898,000 896,000 -118,000 1,011,000                                                 
        distributions in excess of earnings
                          -1,884,602,000 -1,798,561,000 -1,776,782,000 -1,722,402,000 -1,797,851,000 -1,741,765,000 -1,742,998,000 -1,947,507,000 -1,894,054,000 -2,402,101,000 -2,345,206,000 -2,367,073,000 -2,572,723,000 -2,530,585,000 -2,489,961,000 -2,385,399,000 -2,495,877,000 -2,455,302,000 -2,625,295,000 -2,596,917,000 -2,616,919,000 -2,589,336,000 -2,603,564,000 -2,649,542,000 -2,647,921,000 -2,735,097,000 -2,772,345,000 -2,798,853,000 -2,886,352,000 -2,917,863,000 -2,893,093,000 -2,863,287,000 -2,902,175,000 -2,897,490,000 -2,873,679,000 -2,803,679,000 -2,774,353,000 -2,726,882,000 -2,680,955,000 -2,637,513,000 -2,597,379,000 -2,567,772,000 -2,492,082,000 -2,465,312,000 -2,413,472,000 -2,372,038,000 -2,332,171,000 -1,959,369,000 -1,867,518,000 -2,057,487,000 -2,018,733,000 -1,700,714,000 -1,607,931,000 -1,552,706,000 -1,575,292,000 -1,509,391,000 -1,405,277,000 -1,363,546,000 -1,350,899,000 -1,227,925,000 -1,175,579,000 -1,124,556,000 -1,047,897,000 -1,043,052,000 
        preferred noncontrolling interests in aimco operating partnership
                             97,064,000 101,178,000 101,178,000 101,195,000 101,291,000 101,320,000 101,332,000 101,378,000 101,537,000 101,537,000 101,537,000 101,606,000 103,201,000 103,201,000 86,198,000 86,201,000 87,926,000 87,937,000 87,942,000 87,942,000 87,937,000 78,909,000 78,917,000 79,121,000 79,953,000 79,969,000 79,984,000 80,030,000 80,046,000 80,077,000 80,401,000 83,365,000 83,385,000 83,387,000 83,404,000 83,428,000 83,537,000 86,389,000 86,483,000 86,656,000 86,625,000 87,286,000 87,247,000                   
        perpetual preferred stock
                                125,000,000 125,000,000 125,000,000 125,000,000 125,000,000 125,000,000 125,000,000 125,000,000 125,000,000 125,000,000 125,000,000 159,126,000 159,126,000 159,126,000 159,126,000 159,126,000 159,126,000 186,126,000 186,126,000 186,126,000 58,114,000 68,114,000 68,114,000 68,114,000 68,114,000 68,114,000 68,114,000 366,216,000 667,152,000 656,015,000 657,601,000 657,601,000 657,601,000 758,601,000 660,500,000 660,500,000 660,500,000 660,500,000 660,500,000 696,500,000 696,500,000 696,500,000                 
        revenues
                                                                                          
        rental and other property revenues attributable to real estate
                                230,235,000 922,593,000 234,048,000 231,130,000 225,393,000 918,148,000 233,708,000 227,703,000 225,228,000                                                  
        asset management business rental and tax credit revenues
                                                                                          
        total revenues
                                230,235,000 972,410,000 242,481,000 250,187,000 247,720,000 1,005,437,000 254,635,000 249,092,000 246,481,000 995,854,000 248,904,000 251,218,000 246,239,000 981,310,000 246,387,000 244,783,000 244,265,000 984,363,000 246,843,000 246,418,000 248,924,000 974,053,000 254,514,000 259,662,000 255,450,000 1,033,197,000 267,448,000 270,872,000 273,799,000 281,410,000 281,035,000 286,553,000 1,144,934,000 292,302,000 294,991,000 292,976,000 1,195,763,000 319,346,000                     
        operating expenses
                                                                                          
        property operating expenses attributable to real estate
                                79,184,000 307,901,000 78,254,000 76,031,000 78,287,000 318,939,000 81,179,000 79,014,000 79,626,000                                                  
        property operating expenses of partnerships served by asset management business
                                 20,921,000 2,608,000 9,062,000 9,195,000 35,440,000 8,865,000 8,382,000 8,694,000                                                  
        depreciation and amortization
                                93,565,000 377,786,000 96,406,000 97,485,000 92,548,000 366,184,000 92,513,000 89,155,000 87,168,000 333,066,000 84,848,000 80,680,000 79,828,000 306,301,000 77,237,000 75,150,000 74,432,000 282,608,000 69,437,000 71,399,000 70,307,000 291,910,000 74,622,000 78,345,000 80,331,000 345,077,000 87,444,000 93,052,000 94,317,000 97,321,000 94,084,000 100,911,000 426,060,000 107,309,000 108,667,000 109,019,000 444,413,000 122,362,000                     
        general and administrative expenses
                                10,369,000 46,268,000 12,479,000 13,882,000 11,355,000 43,657,000 10,529,000 10,108,000 10,682,000 44,937,000 11,320,000 11,254,000 11,935,000 43,178,000 11,013,000 12,062,000 10,652,000 44,195,000 10,665,000 10,125,000 10,532,000 45,708,000 10,962,000 11,153,000 11,779,000 49,602,000 12,311,000 13,556,000 11,624,000 12,664,000 12,372,000 11,125,000 53,365,000 12,096,000 15,184,000 11,735,000 69,567,000 15,676,000                     
        other incomes
                                5,703,000 3,778,000 5,780,000 4,366,000 2,958,000 11,353,000 2,344,000 2,727,000 1,738,000 14,295,000 1,543,000 5,526,000 1,570,000 10,368,000 3,590,000 2,912,000 1,019,000 12,764,000 1,408,000   7,403,000   2,224,000 15,776,000 5,230,000 427,000 6,269,000 4,870,000  3,928,000 9,982,000 4,394,000 -6,693,000 3,144,000 17,891,000 8,548,000                     
        total operating expenses
                                188,821,000 756,654,000 195,527,000 200,826,000 194,343,000 811,454,000 195,430,000 189,386,000 188,692,000 749,058,000 190,172,000 186,782,000 182,705,000 725,095,000 182,366,000 179,140,000 183,198,000 722,013,000 179,376,000 180,621,000 183,751,000 725,034,000 186,635,000 195,138,000 197,643,000 833,037,000 216,717,000 222,857,000 230,604,000 237,293,000 231,244,000 245,079,000 1,014,425,000 254,869,000 255,245,000 267,542,000 1,085,250,000 319,593,000                     
        interest income
                                2,726,000 10,914,000 2,712,000 2,884,000 2,172,000 8,332,000 2,047,000 2,012,000 2,192,000 7,797,000 2,163,000 1,843,000 1,835,000 6,949,000 1,737,000 1,705,000 1,725,000 6,878,000 1,787,000 1,671,000 1,729,000 16,059,000 3,587,000 2,651,000 6,425,000 9,913,000 2,079,000 2,477,000 2,554,000 3,273,000 2,254,000 2,248,000 11,131,000 2,389,000 1,928,000 3,224,000 9,341,000 1,962,000                     
        interest expense
                                -41,409,000 -200,634,000 -45,492,000 -49,906,000 -47,795,000 -194,615,000 -50,682,000 -46,858,000 -47,882,000 -196,389,000 -49,377,000 -48,894,000 -47,634,000 -199,685,000 -48,285,000 -49,605,000 -53,520,000 -220,971,000 -57,806,000 -55,061,000 -55,641,000 -237,048,000 -61,726,000 -61,821,000 -62,494,000 -246,761,000 -64,585,000 -64,255,000 -71,851,000 -73,152,000 -96,716,000 -76,381,000 -312,576,000 -77,917,000 -79,499,000 -80,314,000 -324,160,000 -83,179,000                     
        gain on dispositions of real estate
                                291,473,000                                                          
        other
                                72,000 77,000 -283,000 200,000 224,000 7,694,000 6,937,000 200,000 465,000 6,071,000 558,000 4,906,000 77,000 387,000 -1,983,000 350,000 2,264,000 -829,000 1,733,000 189,000 -1,979,000                                      
        income before income tax benefit
                                294,276,000 703,576,000                                                         
        income tax benefit
                                -2,981,000 13,027,000 27,941,000 4,395,000 37,388,000 32,126,000 4,870,000 5,023,000 4,985,000 25,208,000 3,462,000 7,121,000 5,886,000 27,524,000 8,279,000 5,814,000 6,921,000 20,047,000 5,005,000 5,347,000 2,758,000 1,959,000 77,000 -116,000 -50,000 929,000 114,000 230,000 461,000 1,110,000 2,257,000 2,528,000 18,433,000 4,649,000 3,598,000 3,771,000 18,671,000 2,410,000                     
        net income
                                291,295,000 716,603,000 603,917,000 7,156,000 95,690,000 347,079,000 22,144,000 21,591,000 17,155,000 483,273,000 30,036,000 245,953,000 29,885,000 271,983,000 23,769,000 68,688,000 104,150,000 356,111,000 144,515,000 84,605,000 81,532,000 237,825,000 79,410,000 6,979,000 2,833,000 195,361,000 53,335,000 34,131,000 10,647,000 4,657,000 -26,971,000 -27,277,000 -89,624,000 -28,482,000 -10,170,000 -16,760,000 -44,800,000 -9,556,000                     
        noncontrolling interests:
                                                                                          
        net income attributable to noncontrolling interests in consolidated real estate partnerships
                                -91,000 -8,220,000  -45,000 -6,206,000 -9,084,000  -813,000 -951,000 -25,256,000  -8,677,000 -930,000 -4,776,000  -111,000 -4,756,000 -24,595,000                   -22,541,000 -19,342,000                     
        net income attributable to preferred noncontrolling interests in aimco operating partnership
                                -1,934,000 -7,739,000 -1,934,000 -1,934,000 -1,937,000 -7,764,000 -1,938,000 -1,939,000 -1,949,000 -7,239,000 -1,842,000 -1,708,000 -1,726,000 -6,943,000 -1,736,000 -1,736,000 -1,736,000 -6,497,000 -1,601,000 -1,602,000 -1,605,000 -6,423,000 -1,606,000 -1,606,000 -1,606,000 -6,496,000 -1,609,000 -1,611,000 -1,670,000  -1,671,000 -1,671,000 -4,964,000  -1,683,000 -1,693,000 -6,288,000 -1,743,000                     
        net income attributable to common noncontrolling interests in aimco operating partnership
                                -15,137,000 -34,417,000 -30,198,000 -140,000 -3,755,000 -14,457,000 -820,000 -787,000 -557,000 -20,368,000 -192,000 -11,135,000 -1,172,000 -11,554,000 -893,000 -2,972,000 -4,398,000 -15,770,000 -6,549,000 -3,735,000 -3,611,000  -3,796,000      737,000 1,035,000 2,420,000 2,383,000  2,263,000 1,312,000 3,069,000                       
        net income attributable to noncontrolling interests
                                -17,162,000 -50,376,000 -33,926,000 -2,119,000 -11,898,000 -31,305,000 -2,509,000 -3,539,000 -3,457,000 -52,863,000 -14,523,000 -21,520,000 -3,828,000 -23,273,000 -1,844,000 -4,819,000 -10,890,000 -46,862,000 -16,487,000    -12,178,000                                    
        net income attributable to aimco
                                274,133,000 666,227,000 569,991,000 5,037,000 83,792,000 315,774,000 19,635,000 18,052,000 13,698,000 430,410,000 15,513,000 224,433,000 26,057,000 248,710,000 21,925,000 63,869,000 93,260,000 309,249,000 128,028,000 77,042,000 64,927,000 207,290,000 67,232,000 10,948,000 5,892,000 132,456,000 38,781,000 22,800,000 1,949,000 -1,442,000 -23,451,000 -19,260,000 -71,728,000 -14,922,000 -7,825,000 -27,518,000 -64,274,000 -27,502,000                     
        net income attributable to aimco preferred stockholders
                                -2,148,000 -8,593,000 -2,148,000 -2,149,000 -2,148,000 -8,594,000 -2,148,000 -2,149,000 -2,148,000 -11,994,000 -4,323,000 -2,758,000 -2,757,000 -11,794,000 -2,757,000 -2,758,000 -3,522,000 -7,947,000 -2,875,000 -1,758,000 -454,000 -2,804,000 -702,000 -701,000 -702,000 -49,888,000 -14,515,000 -22,182,000 -12,439,000 -13,301,000 -9,672,000 -12,456,000 -53,590,000 -13,576,000 -10,128,000 -12,922,000 -50,566,000 -12,988,000                     
        net income attributable to participating securities
                                -417,000 -1,037,000 -814,000 -71,000 -119,000 -319,000 -57,000 -60,000 -59,000 -635,000  -293,000 -77,000 -950,000  -307,000 -394,000 -1,082,000 -447,000 -274,000 -239,000 -813,000 -262,000 -140,000 -140,000 -422,000 -103,000 -95,000 -119,000 -58,000 -54,000 -57,000  -2,000 -42,000                        
        net income attributable to aimco common stockholders
                                271,568,000 656,597,000 567,029,000 2,817,000 81,525,000 306,861,000 17,430,000 15,843,000 11,491,000 417,781,000 11,176,000 221,382,000 23,223,000 235,966,000 19,179,000 60,804,000 89,344,000 300,220,000 124,706,000 75,010,000 64,234,000 203,673,000 66,268,000 10,107,000 5,050,000 82,146,000 24,163,000 523,000 -10,609,000 -14,801,000 -33,177,000 -31,773,000 -125,318,000 -28,500,000 -17,995,000 -40,440,000 -114,840,000 -40,490,000                     
        net income attributable to aimco per common share – basic and diluted
                                1,880   20 520  110  70  70  150                                              
        weighted-average common shares outstanding – basic
                                144,232,000 155,866,000 156,711,000 156,703,000 156,609,000 156,323,000 156,306,000 156,305,000 156,259,000 156,001,000 156,079,000 156,375,000 155,791,000 155,177,000    145,639,000   145,473,000 145,291,000 145,334,000 145,321,000                                   
        weighted-average common shares outstanding – diluted
                                144,445,000 156,053,000 156,938,000 156,833,000 156,740,000 156,796,000 156,835,000 156,715,000 156,754,000 156,391,000 156,527,000 156,793,000 156,117,000 155,570,000    146,002,000   145,681,000 145,532,000 145,563,000 145,674,000                                   
        assets of partnerships served by asset management business:
                                                                                          
        real estate
                                   216,875,000 220,408,000 224,873,000 228,830,000 231,881,000 235,549,000                                                  
        non-recourse property debt secured by real estate communities
                                 3,915,305,000 3,646,789,000 3,791,238,000 3,700,979,000 3,545,109,000 3,556,668,000 3,617,182,000 3,670,454,000                                                  
        total indebtedness associated with real estate portfolio
                                 4,075,665,000 3,646,789,000 4,261,209,000 4,029,343,000 3,861,770,000 4,162,140,000 4,111,942,000 3,740,154,000                                                  
        liabilities of partnerships served by asset management business:
                                                                                          
        revenues:
                                                                                          
        rental and other property revenues of partnerships served by asset management business
                                 42,830,000 5,022,000 19,000,000 18,808,000 74,046,000 18,232,000 18,533,000 18,562,000                                                  
        tax credit and transaction revenues
                                 6,987,000 3,411,000 57,000 3,519,000 13,243,000 2,695,000 2,856,000 2,691,000                                                  
        operating expenses:
                                                                                          
        benefit from real estate impairment loss
                                     35,881,000                                                     
        gain on dispositions of real estate and the asset management business
                                 677,463,000                                                         
        net income attributable to aimco per common share – basic
                                 4,210 3,620   1,960  100  2,680  1,420                                               
        net income attributable to aimco per common share – diluted
                                 4,210 3,610   1,960  100  2,670  1,410                                               
        operating income
                                  46,954,000 49,361,000 53,377,000 193,983,000 59,205,000 59,706,000 57,789,000 246,796,000 58,732,000 64,436,000 63,534,000 256,215,000 64,021,000 65,643,000 61,067,000 262,350,000 67,467,000 65,797,000 65,173,000 249,019,000 67,879,000 64,524,000 57,807,000 200,160,000 50,731,000 48,015,000 43,195,000 44,117,000 49,791,000 41,474,000 130,509,000 37,433,000 39,746,000 25,434,000 110,513,000 -247,000                     
        income before income taxes and gain on dispositions
                                  3,891,000 2,539,000 7,978,000 15,394,000 17,507,000 15,060,000 12,564,000 64,275,000 12,076,000 22,291,000 17,812,000  15,490,000 18,093,000 11,536,000                                          
        income before gain on dispositions
                                  31,832,000 6,934,000 45,366,000 47,520,000 22,377,000 20,083,000 17,549,000 89,483,000 15,538,000 29,412,000 23,698,000                                              
        gain on dispositions of real estate and the asset management business, inclusive of related income tax
                                  572,085,000                                                        
        net (income) loss attributable to noncontrolling interests in consolidated real estate partnerships
                                  -1,794,000        -12,489,000        -8,337,000 -2,226,000 -11,389,000 -12,473,000 -6,776,000   -51,218,000 -11,334,000 -9,665,000 -7,765,000 -5,464,000      -12,134,000                       
        dividends declared per common share
                                  380 380 380  360 360 360  330 330 330  300 300 280  260 260 260  240 240 240  200 180 180 120 120 120 300 100 100  400 100                     
        assets of partnerships served by asset management business held for sale at june 30, 2018:
                                                                                          
        liabilities of partnerships served by asset management business held for sale at june 30, 2018:
                                                                                          
        gain on dispositions of real estate, inclusive of related income tax
                                   222,000 50,324,000                                                      
        deferred income
                                    11,814,000 12,487,000 13,922,000 15,355,000 16,868,000 49,366,000 46,490,000 57,819,000 59,961,000 64,052,000 65,694,000 70,303,000 76,682,000 81,882,000 86,853,000 93,294,000 102,347,000 107,775,000 111,390,000 116,238,000 123,652,000 128,577,000 133,054,000 133,097,000 137,892,000 150,357,000 147,082,000 153,345,000 150,815,000 152,533,000 158,402,000 173,656,000 182,485,000 177,754,000 183,594,000 184,796,000 195,997,000 190,617,000 205,494,000 201,966,000 202,392,000 154,293,000 150,326,000 134,761,000 165,684,000 158,156,000 98,814,000 99,213,000 47,138,000 46,104,000 53,535,000 47,563,000 47,203,000 25,289,000 
        gain on dispositions of real estate, net of tax
                                     299,559,000  1,508,000  393,790,000 14,498,000 216,541,000 6,187,000 180,593,000  44,781,000 85,693,000 288,636,000 126,329,000 66,662,000 69,492,000                                      
        gain on dispositions of real estate, inclusive of tax
                                      -233,000  -394,000                                                  
        net income (income) attributable to noncontrolling interests in consolidated real estate partnerships
                                      249,000        785,000         6,150,000 4,962,000      2,771,000 7,305,000 13,301,000 11,213,000 2,716,000                        
        investment management expenses
                                        784,000 4,333,000 938,000 1,017,000 975,000 5,855,000 1,905,000 1,086,000 1,603,000 7,310,000 1,279,000 1,021,000 1,252,000 4,341,000 373,000 1,697,000 1,433,000 12,008,000 2,817,000 3,240,000 3,388,000 2,386,000 2,187,000 3,031,000 14,487,000 2,609,000 5,141,000 3,229,000 15,779,000 4,213,000                     
        accounts payable
                                         36,677,000 47,944,000 43,414,000 37,792,000 36,123,000 37,311,000 35,239,000 50,860,000 41,919,000 40,166,000 37,158,000 35,795,000 43,161,000 27,438,000 33,415,000 25,235,000 30,747,000 28,488,000 27,054,000 22,822,000 24,999,000 25,988,000 21,818,000 27,322,000 23,879,000 27,647,000 20,662,000 29,819,000 36,317,000 33,335,000 32,902,000 64,241,000 36,477,000 30,931,000 31,775,000 56,792,000 57,572,000 42,096,000 31,347,000 54,972,000 39,280,000 30,460,000 28,201,000 34,381,000 44,731,000 46,666,000 40,663,000 34,663,000 46,369,000 
        rental and other property revenues
                                         974,531,000 244,115,000 242,871,000 241,481,000 956,954,000 240,382,000 238,637,000 238,289,000 952,831,000 239,873,000 239,492,000 240,136,000 939,231,000 247,117,000 251,853,000 248,198,000 991,428,000 256,752,000 261,958,000 265,728,000 269,525,000 273,384,000 277,317,000 1,109,381,000 282,595,000 285,395,000 288,719,000 1,140,828,000 307,907,000                     
        tax credit and asset management revenues
                                         21,323,000 4,789,000 8,347,000 4,758,000 24,356,000 6,005,000 6,146,000 5,976,000 31,532,000 6,970,000 6,926,000 8,788,000 34,822,000 7,397,000 7,809,000 7,252,000 41,769,000                                 
        property operating expenses
                                         352,427,000 91,523,000 88,305,000 88,397,000 359,393,000 88,621,000 87,930,000 95,492,000 373,316,000 95,174,000 94,438,000 99,270,000 375,672,000 98,463,000 101,717,000 101,876,000 402,225,000 106,462,000 105,875,000 108,642,000 119,903,000 117,379,000 126,084,000 510,179,000 128,174,000 132,946,000 140,415,000 521,161,000 146,608,000                     
        accumulated other comprehensive loss
                                          -434,000 -710,000 -431,000 -6,040,000 -6,810,000 -7,402,000 -7,009,000 -6,456,000 -5,517,000 -5,243,000 -4,503,000 -4,602,000 -5,467,000 -4,365,000 -4,664,000 -3,542,000 -6,397,000 -6,292,000 -4,191,000 -8,312,000 -1,147,000 -2,042,000 -2,076,000 -4,455,000 -2,872,000 -1,251,000 -1,138,000 -1,846,000 -473,000                    
        net (income) loss attributable to participating securities
                                          -14,000                                                
        benefit from real estate impairment losses
                                                 1,820,000 1,413,000       8,349,000 2,453,000 6,707,000 6,364,000                              
        income before income taxes and discontinued operations
                                             63,866,000    47,428,000    32,637,000 8,118,000 4,304,000 752,000 -15,835,000 4,455,000 -11,691,000 -24,685,000 -27,421,000 -45,697,000 -33,112,000 -184,322,000 -52,830,000 -39,931,000 -41,489,000 -215,708,000 -81,084,000                     
        income from continuing operations
                                             91,390,000 23,769,000 23,907,000 18,457,000 67,475,000 18,186,000 17,943,000 12,040,000 34,596,000 8,195,000 4,188,000 702,000 -14,906,000 4,569,000 -11,461,000 -24,224,000 -26,311,000 -43,440,000 -30,584,000 -165,889,000 -48,181,000 -36,333,000 -37,718,000 -197,037,000 -78,674,000                     
        income from discontinued operations, net of tax
                                                                                          
        earnings attributable to aimco per common share – basic and diluted:
                                                                                          
        income from discontinued operations
                                                     203,229,000 71,215,000 2,791,000 2,131,000 210,267,000 48,766,000 45,592,000 34,871,000 30,968,000 16,469,000 3,307,000 76,265,000 19,699,000 26,163,000 20,958,000 152,237,000 69,118,000                     
        net income (income) attributable to participating securities
                                              11,000                                            
        earnings attributable to aimco per common share – basic
                                                                                          
        earnings attributable to aimco per common share – diluted
                                                                                          
        less accumulated depreciation
                                               -2,666,610,000 -2,703,934,000 -2,672,179,000 -2,615,712,000 -2,716,076,000 -2,840,071,000 -2,822,872,000 -2,908,941,000 -2,924,109,000 -2,893,130,000 -2,820,765,000 -2,849,046,000 -2,888,828,000 -2,907,044,000 -2,876,894,000 -2,837,896,000 -2,990,025,000 -2,934,912,000 -2,900,467,000 -2,830,752,000 -2,764,828,000 -2,701,046,000 -2,803,036,000 -2,812,016,000 -2,883,910,000 -2,782,724,000 -2,822,045,000 -2,962,147,000 -3,097,465,000 -3,035,242,000 -2,957,001,000 -2,905,219,000 -2,946,252,000 -2,901,267,000 -2,894,820,000 -2,807,340,000 -2,769,591,000 -2,238,114,000 -2,199,796,000 -2,193,372,000 -2,112,891,000 -2,014,712,000 -1,934,939,000 
        earnings attributable to aimco per common share – basic and diluted
                                                                                          
        income before income taxes, discontinued operations and gain on dispositions
                                                  13,181,000 12,596,000 9,282,000                                      
        other income
                                                   3,638,000 2,390,000  2,215,000 2,226,000                                   
        net (income) loss attributable to noncontrolling interests
                                                   -7,563,000 -16,605,000                                      
        income from continuing operations attributable to aimco common stockholders
                                                    440 290 50 20  -590 -70 -300 -300 -260 -350 -300 -1,480 -360 -300 -440 -1,750 -640                     
        income from discontinued operations attributable to aimco common stockholders
                                                     1,110 410 50 30 1,200 240 300 210 140 70 30 400 110 150 90 750 290                     
        recovery of losses on notes receivable
                                                     1,884,000    3,375,000    233,000     148,000   1,233,000                     
        equity in income (losses) of unconsolidated real estate partnerships
                                                     926,000 277,000 104,000 524,000  206,000         7,951,000                       
        gain on dispositions of unconsolidated real estate and other
                                                     1,797,000        3,095,000 808,000 1,212,000 10,675,000 924,000 4,970,000 2,642,000 22,494,000 3,345,000                     
        net (income) loss attributable to common noncontrolling interests in aimco operating partnership
                                                     -11,639,000  -575,000 -297,000 -5,191,000 -1,611,000 -55,000                               
        total noncontrolling interests
                                                     -30,535,000    -62,905,000 -14,554,000 -11,331,000 -8,698,000 -6,099,000 3,520,000 8,017,000 17,896,000 13,560,000 2,345,000 -10,758,000 -19,474,000 -17,946,000                     
        accounts receivable
                                                      32,925,000 29,906,000 34,477,000 34,020,000 36,540,000 35,592,000 42,957,000 40,848,000 41,293,000 59,349,000 49,855,000 48,131,000 47,192,000 44,853,000 59,822,000 61,584,000 67,729,000 80,689,000 89,132,000 91,703,000 78,439,000 71,938,000 71,463,000 77,004,000 76,347,000 66,439,000 85,772,000 56,569,000 65,830,000 61,319,000 57,479,000 78,343,000 88,716,000 73,060,000 75,044,000 56,327,000 
        gain on dispositions and other
                                                      -1,899,000 -1,154,000 -1,510,000                                  
        net income (income) attributable to noncontrolling interests
                                                       3,969,000 3,059,000                                  
        weighted-average common shares outstanding – basic and diluted
                                                        145,169,000 134,479,000 144,959,000 127,395,000                               
        equity in losses of unconsolidated real estate partnerships
                                                         -4,408,000  -2,242,000 -763,000 -4,987,000   -23,112,000 -15,522,000   -12,025,000 -4,198,000                     
        gain on dispositions of interests in unconsolidated real estate and other
                                                         21,886,000 16,024,000 4,314,000 2,180,000                              
        investment in unconsolidated real estate partnerships
                                                          38,249,000 34,400,000 38,222,000 63,942,000 74,349,000 57,604,000 59,282,000 79,256,000 114,549,000 133,103,000 105,324,000 112,610,000 117,432,000 121,322,000 109,312,000 114,493,000 106,388,000 120,982,000 117,217,000 30,721,000 37,124,000 36,460,000 39,000,000 54,671,000 59,036,000 59,554,000 167,799,000 177,518,000 157,521,000 174,460,000 188,137,000 183,276,000 
        asset management and tax credit revenues
                                                          10,696,000 8,914,000 8,071,000 11,885,000 7,651,000 9,236,000 35,553,000 9,707,000 9,596,000 4,257,000 49,853,000 10,325,000                     
        earnings attributable to aimco per common share — basic and diluted
                                                                                          
        weighted-average common shares outstanding — basic and diluted
                                                            120,526,000   117,320,000 116,369,000    114,301,000                      
        deferred financing costs
                                                             46,670,000 46,984,000 48,171,000 48,032,000 49,958,000 50,272,000 52,158,000 52,725,000 54,561,000 59,038,000 58,388,000 59,473,000 61,782,000 68,768,000 73,589,000 79,923,000 77,808,000 73,136,000 75,579,000 73,749,000 75,173,000 74,529,000 76,242,000 67,498,000 66,619,000 68,716,000 71,416,000 72,426,000 67,139,000 
        deferred income tax assets
                                                             61,589,000 61,919,000 59,435,000 58,736,000 55,290,000 49,943,000 45,909,000 42,015,000 33,267,000 28,332,000 27,052,000 28,326,000 12,706,000 11,059,000 15,256,000 14,426,000  5,139,000 2,719,000     9,835,000      
        security deposits
                                                             34,516,000 34,982,000 35,323,000 35,322,000 35,833,000 35,794,000 36,123,000 35,764,000 38,865,000 41,427,000 42,774,000 43,277,000 45,840,000 48,450,000 50,600,000 49,469,000 48,860,000 48,038,000 45,920,000 44,428,000 44,623,000 43,851,000 42,914,000 38,789,000 39,107,000 40,254,000 39,375,000 38,063,000 37,879,000 
        preferred stock subject to repurchase agreement
                                                             10,000,000 10,000,000 20,000,000 20,000,000 20,000,000 20,000,000 30,000,000 30,000,000 30,000,000 30,000,000                    
        class a common stock, 0.01 par value...
                                                             1,209,000 1,205,000 1,191,000 1,176,000 1,170,000 1,170,000 1,168,000 1,165,000     902,000 874,000 914,000  956,000 967,000 971,000           
        benefit from operating real estate impairment losses
                                                             149,000   352,000 287,000   2,329,000 21,676,000                     
        net (income) loss attributable to preferred noncontrolling interests in aimco operating partnership
                                                             -1,670,000                             
        weighted-average common shares outstanding, basic and diluted
                                                             120,339,000 119,156,000   116,434,000 116,323,000 116,035,000                       
        accounts receivable from affiliates
                                                              5,179,000 8,049,000 8,392,000 11,038,000 13,191,000 18,767,000 23,744,000 26,769,000 27,644,000 32,833,000 33,536,000 32,842,000 32,420,000 35,072,000 34,958,000 31,639,000 33,680,000 25,590,000 20,763,000 24,534,000 24,984,000 21,953,000 43,070,000 40,495,000 44,984,000 53,107,000 39,216,000 54,451,000 
        notes receivable from unconsolidated real estate partnerships
                                                              10,209,000 10,744,000 10,896,000 12,427,000 12,280,000 12,137,000 14,295,000 14,855,000 14,818,000 24,267,000 22,567,000 30,326,000 31,869,000 35,441,000 35,186,000 46,396,000 43,106,000 40,278,000 40,641,000 46,937,000 45,705,000 39,832,000 177,218,000 178,407,000 168,918,000 170,352,000 165,289,000 155,206,000 
        notes receivable from non-affiliates
                                                              117,078,000 121,651,000 126,726,000 128,381,000 129,427,000 129,271,000 125,269,000 143,102,000 141,125,000 139,949,000 136,633,000 150,460,000 147,635,000 144,977,000 143,054,000 141,148,000 138,678,000 135,481,000 139,352,000 52,124,000 51,497,000 52,847,000 23,760,000 27,373,000 27,083,000 29,987,000 31,716,000 51,318,000 
        non-recourse property tax-exempt bond financing
                                                              434,536,000 431,452,000 514,506,000 548,502,000                         
        non-recourse property loans payable
                                                              4,872,614,000 4,963,846,000 4,943,277,000 4,940,829,000                         
        other borrowings
                                                              40,974,000 45,281,000 47,018,000 53,231,000 58,943,000 63,260,000 53,057,000 85,683,000 88,237,000 90,941,000 95,981,000 81,511,000 87,839,000 74,492,000 75,057,000 65,003,000 59,786,000 60,557,000 67,660,000          
        other incomes (income)
                                                              5,222,000                            
        (benefit from) recovery of losses on notes receivable
                                                              -36,000   -6,000                         
        equity in (losses) earnings of unconsolidated real estate partnerships
                                                              -1,798,000    -7,224,000                        
        benefit from losses on notes receivable
                                                               -17,000 -949,000   -426,000 -21,549,000                      
        equity in (losses) income of unconsolidated real estate partnerships
                                                               -1,648,000                           
        earnings per common share — basic and diluted:
                                                                                          
        real estate:
                                                                                          
        notes due on common stock purchases
                                                                -586,000 -805,000 -911,000 -903,000 -1,392,000 -1,417,000 -1,403,000 -2,148,000 -3,607,000 -4,016,000 -4,125,000 -4,780,000 -5,441,000 -5,217,000 -3,760,000 -3,794,000 -4,714,000 -5,029,000 -7,632,000 -9,283,000 -25,911,000 -26,491,000 -28,608,000 -32,876,000 -36,725,000 -39,588,000 
        benefit from impairment losses on real estate development assets
                                                                                          
        restructuring costs
                                                                    11,241,000                      
        net income (income) attributable to common noncontrolling interests in aimco operating partnership
                                                                9,559,000    9,355,000 3,139,000                     
        term loans
                                                                  25,000,000 45,000,000 90,000,000 260,000,000  350,000,000 400,000,000 475,000,000 475,000,000 475,000,000 475,000,000 475,000,000 400,000,000 400,000,000 400,000,000 400,000,000 400,000,000 400,000,000 400,000,000 400,000,000 400,000,000  300,000,000 250,000,000 
        impairment losses related to unconsolidated real estate partnerships
                                                                 -131,000   -322,000                      
        net income (income) attributable to preferred noncontrolling interests in aimco operating partnership
                                                                 84,000                         
        property tax-exempt bond financing
                                                                  548,973,000 577,221,000 574,926,000 605,055,000 624,975,000 720,722,000 721,971,000 792,280,000 910,300,000 942,316,000 941,555,000 948,562,000 949,692,000 946,348,000 936,082,000 1,036,582,000 1,043,755,000 1,057,066,000       
        property loans payable
                                                                  5,010,995,000 5,018,676,000 4,972,327,000 5,206,788,000 5,423,593,000 5,558,506,000 5,559,169,000 5,511,840,000 5,809,951,000 6,070,356,000 6,040,170,000 5,807,743,000 5,595,153,000 5,529,828,000 5,329,011,000 5,197,393,000 5,163,064,000 5,155,218,000       
        credit facility
                                                                   14,800,000  15,070,000  15,000,000  5,100,000 145,000,000 218,800,000  75,000,000 154,000,000 130,000,000 140,000,000 155,000,000  42,000,000 217,000,000 232,000,000 274,600,000 276,000,000 68,700,000 168,400,000 
        earnings per common share — basic and diluted
                                                                                          
        property management revenues, primarily from affiliates
                                                                    5,082,000 1,114,000                     
        property management expenses
                                                                    2,869,000 510,000                     
        class a common stock, .01 par value...
                                                                     1,164,000 1,164,000 1,165,000 1,162,000    961,000    968,000 959,000 972,000 972,000  957,000 954,000 953,000  948,000 
        weighted-average common shares outstanding, basic
                                                                     115,563,000                     
        weighted-average common shares outstanding, diluted
                                                                     115,563,000                     
        liabilities and stockholders’ equity
                                                                                          
        minority interest in consolidated real estate partnerships
                                                                        348,484,000 401,351,000 415,835,000 424,363,000 441,778,000 256,152,000 262,608,000 210,878,000 212,149,000 215,099,000 268,629,000 275,614,000 217,679,000 208,991,000 213,518,000 205,929,000 211,804,000 221,896,000 
        minority interest in aimco operating partnership
                                                                        88,148,000 109,533,000 124,337,000 104,768,000 113,263,000 146,843,000 155,564,000 159,599,000 185,447,000 190,634,000 206,255,000 212,153,000 217,729,000 232,018,000 250,747,000 260,831,000 272,037,000 278,184,000 
        stockholders’ equity:
                                                                                          
        total stockholders’ equity
                                                                        1,418,434,000 1,584,666,000 1,593,621,000 1,550,854,000 1,749,704,000 2,036,991,000 2,273,459,000 2,347,440,000 2,339,892,000 2,373,400,000 2,716,740,000 2,653,674,000  2,834,046,000 2,869,286,000 2,908,609,000  2,958,541,000 
        total liabilities and stockholders’ equity
                                                                        9,403,157,000 9,897,215,000 10,326,678,000 10,551,763,000 10,606,532,000 10,519,010,000 10,399,641,000 10,306,066,000 10,289,775,000 10,221,365,000 10,392,396,000 10,365,780,000  10,263,056,000 10,421,366,000 10,330,494,000  10,184,975,000 
        preferred stock, perpetual
                                                                          723,500,000 723,500,000 723,500,000 723,500,000 723,500,000 723,500,000 723,500,000 723,500,000 897,000,000 797,000,000 860,250,000 860,250,000 860,250,000 860,250,000 891,500,000 841,500,000 
        deferred income tax liabilities
                                                                                4,379,000 3,934,000 6,219,000 9,432,000       
        preferred stock, convertible
                                                                              100,000,000 100,000,000 100,000,000 100,000,000 100,000,000 100,000,000 150,000,000 150,000,000 150,000,000 150,000,000 150,000,000 150,000,000 
        deferred income tax asset
                                                                             12,583,000             
        deferred income tax liability
                                                                                          
        stockholders’ equity
                                                                                          
        secured tax-exempt bond financing
                                                                                    1,076,569,000 1,060,872,000 1,107,067,000 1,110,270,000 1,133,794,000 1,092,607,000 
        secured notes payable
                                                                                    4,590,674,000 4,598,410,000 4,718,177,000 4,672,936,000 4,470,859,000 4,477,074,000 
        mandatorily redeemable preferred securities
                                                                                        15,019,000 15,019,000 
        unearned restricted stock
                                                                                    -24,255,000 -27,024,000 -28,276,000    
        deferred income taxes payable
                                                                                     8,257,000 14,312,000 20,770,000 20,139,000 29,613,000 
        unvested restricted stock
                                                                                       -30,503,000 -19,740,000 -19,336,000 
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-09-30 2011-06-30 2011-03-31 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 2008-03-31 2007-12-31 
                                                                          
          cash flows from operating activities:
                                                                          
          net income
        302,993,000 -16,976,000 -11,712,000 -7,636,000 -20,065,000 -61,103,000 -7,196,000 -153,367,000 1,657,000 144,000 -5,753,000 -205,338,000 34,173,000 253,211,000 10,112,000 -1,182,000 -4,846,000 -20,386,000 21,434,000 -33,137,000 -24,815,000 43,204,000 8,977,000 142,766,000 3,970,000 69,996,000 291,295,000 9,840,000 603,917,000 7,156,000 95,690,000 286,189,000 22,144,000 21,591,000 17,155,000 177,399,000 30,036,000 245,953,000 29,885,000 75,376,000 23,769,000 68,688,000 104,150,000 45,459,000 144,515,000 84,605,000 81,532,000 148,603,000 79,410,000 6,979,000 2,833,000 97,248,000 53,335,000 34,131,000 10,647,000 4,657,000 -26,971,000 -27,277,000 -16,760,000 4,956,000 -9,556,000 -7,631,000 -32,569,000 8,171,000 -24,546,000 -12,281,000 
          adjustments to reconcile net income to net cash from operating activities:
                                                                          
          depreciation and amortization
        12,138,000 16,363,000 16,421,000 21,236,000 23,545,000 22,110,000 19,468,000 17,728,000 17,804,000 17,031,000 16,271,000 15,547,000 85,439,000 34,863,000 23,118,000 21,647,000 21,709,000 20,639,000 20,717,000 -218,449,000 98,249,000 97,689,000 100,476,000 97,144,000 97,538,000 91,924,000 93,565,000 91,347,000 96,406,000 97,485,000 92,548,000 97,348,000 92,513,000 89,155,000 87,168,000 87,710,000 84,848,000 80,680,000 79,828,000 79,482,000 77,237,000 75,150,000 74,432,000 71,465,000 69,437,000 71,399,000 70,307,000 62,640,000 70,652,000 78,287,000 80,331,000 80,099,000 79,598,000 91,063,000 94,317,000 94,622,000 92,206,000 100,911,000 109,019,000 88,733,000 114,766,000 117,699,000 123,215,000 114,959,000 126,524,000 117,446,000 
          realized and unrealized losses on interest rate contracts
        101,000 72,000 261,000 -588,000 1,148,000                                                              
          realized and unrealized losses on equity investments
        4,868,000 210,000 397,000 1,403,000 566,000 47,264,000 271,000 -535,000 1,066,000 -1,094,000 -137,000                                                        
          income tax expense
        -116,000 5,571,000 -85,000 -2,340,000 -3,814,000 -2,187,000 -2,730,000 -1,929,000 -6,210,000 -417,000 -4,196,000 -7,074,000 -17,563,000             -1,827,000 2,981,000                                        
          share-based compensation expense
        1,670,000 1,406,000 1,136,000                                                                
          loss from unconsolidated real estate partnerships
        -430,000 -381,000 -544,000 -349,000                                                               
          impairment on real estate
                                                                          
          other, including amortization of debt issuance costs
        973,000 1,379,000 2,901,000                                                                
          discontinued operations:
                                                                          
          gain on dispositions of real estate
               -6,106,000            -47,238,000 34,000   -64,310,000 -291,473,000                                        
          other adjustments to income from discontinued operations
                                                                          
          changes in operating assets and operating liabilities:
                                                                          
          operating assets
        4,640,000 429,000 -3,163,000 -6,248,000 958,000 -4,497,000 -3,568,000                                                            
          operating liabilities
        -4,325,000 1,593,000 -1,784,000 -3,077,000 2,476,000 637,000 12,446,000                                                            
          total adjustments
        -294,068,000 26,642,000 15,540,000 8,464,000 36,503,000 69,109,000 28,908,000 161,283,000 23,209,000 11,942,000 11,352,000 181,318,000 168,701,000 -234,344,000 -3,601,000                                                    
          net cash from operating activities
        8,925,000 9,666,000 3,828,000 828,000 16,438,000 8,006,000 21,712,000 7,916,000 24,866,000 12,086,000 5,599,000 -24,020,000 202,874,000 18,867,000 6,511,000 -9,499,000 5,619,000 14,142,000 2,324,000 -218,030,000 81,519,000 106,941,000 77,416,000 95,724,000 108,709,000 88,422,000 81,617,000 93,462,000 117,300,000 104,303,000 81,323,000 109,114,000 109,012,000 107,497,000 68,516,000 101,268,000 99,691,000 102,812,000 73,953,000 101,447,000 101,140,000 92,653,000 64,651,000 88,035,000 89,110,000 89,478,000 54,801,000 77,473,000 75,097,000 124,134,000 48,892,000 74,530,000 90,265,000 103,560,000 48,472,000 81,173,000 67,528,000 27,680,000 26,778,000 96,441,000 77,970,000 77,175,000 -17,774,000 86,254,000 54,251,000 133,040,000 
          cash flows from investing activities:
                                                                          
          capital expenditures
        -28,257,000 -26,426,000 -19,191,000 -46,158,000 -36,009,000 -36,924,000 -40,936,000 -60,302,000 -82,276,000 -65,105,000 -64,814,000 -53,475,000 -59,235,000 -75,157,000 -49,656,000 -42,954,000 -52,503,000 -50,694,000 -31,658,000 248,380,000 -89,921,000 -87,506,000 -94,842,000 -100,712,000 -116,261,000 -90,942,000 -85,546,000 -87,340,000 -89,033,000 -88,515,000 -75,601,000 -91,481,000 -90,235,000 -94,237,000 -82,151,000 -87,322,000 -93,293,000 -86,454,000 -79,576,000 -89,605,000 -104,500,000 -101,333,000 -71,742,000 -90,110,000 -94,790,000 -88,182,000 -94,242,000 -75,222,000 -111,748,000 -97,304,000 -66,064,000 -81,839,000 -70,940,000 -61,037,000 -56,394,000 -56,581,000 -31,613,000 -30,236,000 -39,057,000 -82,453,000 -70,554,000 -78,967,000 -68,370,000 -189,203,000 -150,823,000 -233,342,000 
          free cash flows
        -19,332,000 -16,760,000 -15,363,000 -45,330,000 -19,571,000 -28,918,000 -19,224,000 -52,386,000 -57,410,000 -53,019,000 -59,215,000 -77,495,000 143,639,000 -56,290,000 -43,145,000 -52,453,000 -46,884,000 -36,552,000 -29,334,000 30,350,000 -8,402,000 19,435,000 -17,426,000 -4,988,000 -7,552,000 -2,520,000 -3,929,000 6,122,000 28,267,000 15,788,000 5,722,000 17,633,000 18,777,000 13,260,000 -13,635,000 13,946,000 6,398,000 16,358,000 -5,623,000 11,842,000 -3,360,000 -8,680,000 -7,091,000 -2,075,000 -5,680,000 1,296,000 -39,441,000 2,251,000 -36,651,000 26,830,000 -17,172,000 -7,309,000 19,325,000 42,523,000 -7,922,000 24,592,000 35,915,000 -2,556,000 -12,279,000 13,988,000 7,416,000 -1,792,000 -86,144,000 -102,949,000 -96,572,000 -100,302,000 
          proceeds from dispositions of real estate
                               7,000 80,373,000 342,083,000 384,000 632,147,000 6,529,000 69,788,000 391,135,000 112,000 8,736,000 2,179,000 210,169,000 26,653,000 289,090,000 9,601,000 139,660,000 94,606,000 133,305,000 75,357,000 325,832,000 138,773,000 100,082,000 236,578,000 112,776,000 5,062,000 2,898,000 199,689,000 131,346,000 75,173,000 78,696,000 100,424,000 65,299,000 22,014,000 27,682,000 313,188,000 296,806,000 212,307,000 53,630,000 640,435,000 33,351,000 74,920,000 
          other investing activities
        2,210,000 437,000 -557,000 -851,000 -526,000 572,000 -153,000 454,000 554,000 2,990,000 1,580,000 746,000 -1,177,000 -43,000 -73,000 -11,813,000 -10,703,000 -1,435,000 -49,000 10,929,000 -10,403,000 -2,719,000 4,665,000 -7,956,000 -1,878,000 1,064,000 1,422,000 -3,203,000 -384,000 2,297,000 -218,000 -503,000 -1,819,000 639,000 94,000 120,000 121,000 4,804,000 5,209,000 27,376,000 -25,363,000 3,939,000 -699,000 6,309,000 4,301,000 5,302,000 -8,749,000 6,785,000 3,492,000 18,152,000 -7,478,000 -43,962,000 3,157,000 -665,000 4,785,000 6,941,000 2,656,000 9,434,000 6,269,000 9,584,000 6,919,000 11,584,000 8,869,000 -15,096,000 10,623,000 32,420,000 
          net cash from (used) in investing activities
                                                                          
          cash flows from financing activities:
                                                                          
          proceeds from non-recourse construction loans and bridge financing
                                                                          
          proceeds from revolving credit facility
        1,000,000                                                                  
          principal repayments on non-recourse property debt
        -68,214,000 -812,000 -817,000 -805,000 -792,000 -785,000 -784,000 -23,665,000 -768,000 -60,762,000 -779,000 -17,866,000 -736,000 -281,725,000 -2,101,000 -2,076,000 -1,976,000 -2,157,000 -18,174,000 618,161,000 -428,007,000 -251,725,000 -22,622,000       -50,882,000 -206,262,000 -158,493,000 -159,254,000 -59,394,000 -32,026,000 -118,619,000 -194,061,000 -40,088,000 -19,179,000 -95,550,000 -28,510,000 -249,376,000 -140,858,000 -136,886,000 -197,974,000 -116,358,000 -62,381,000 -176,551,000 -142,193,000 -49,349,000 -104,183,000 -154,893,000 -118,952,000 -97,810,000 -76,137,000            
          principal repayments on non-recourse construction loans and bridge financing
                                                                          
          principal repayments on revolving credit facility
                                                                          
          payments of deferred loan costs
           -2,016,000      -7,022,000 -1,624,000    -456,000                                                  
          proceeds from interest rate contracts
        304,000 293,000 823,000 1,214,000 1,529,000                                                              
          common stock repurchased
        -256,000 -4,801,000 -3,157,000 -24,432,000 -6,555,000 -10,074,000 -14,378,000 -7,869,000 -14,522,000 -19,073,000 -3,102,000 -1,317,000                                                    
          payments related to withholding taxes for share-based compensation
        -783,000 -1,406,000 -2,139,000    -567,000                                                            
          dividends paid on common stock and distributions paid on op units
                                                                          
          contributions from redeemable noncontrolling interests
        4,042,000 4,034,000 2,877,000 5,019,000 1,240,000   1,000 124,000 158,000                                                       
          distributions to redeemable noncontrolling interests
        -2,057,000 -2,057,000 -2,010,000 -2,029,000 -2,198,000 -2,057,000 -2,034,000 -2,033,000 -2,058,000 -2,057,000 -3,095,000 -8,448,000                                                       
          contributions from noncontrolling interests
        177,000 177,000 174,000 183,000 194,000 194,000 485,000 38,000 71,000 113,000 50,000                                                       
          distributions to noncontrolling interests
        -396,000 -344,000 -430,000 -451,000 -326,000 -436,000 -401,000 -406,000 -288,000 -310,000 -287,000 -310,000                                                       
          redemption of op units held by third parties
        -379,000 -70,000 -106,000 -298,000 -285,000 -115,000 -285,000                                                            
          purchase of redeemable noncontrolling interests in consolidated real estate partnerships
                                                                         
          other financing activities
        -1,369,000 -572,000 1,022,000 1,093,000 -3,032,000   -23,000 -704,000 -3,595,000 571,000 -184,000 105,000 1,098,000 -1,216,000 -7,906,000 -233,000 -272,000 -354,000 477,000 9,339,000 -23,954,000 -365,000 4,427,000 3,821,000 -10,987,000 302,000 5,648,000 -374,000 -3,053,000 3,012,000 -2,889,000 -4,377,000 -2,114,000 2,167,000 7,937,000 8,842,000 -8,008,000 -1,681,000 -2,633,000 -2,089,000 -773,000 -1,657,000 -4,123,000 -3,403,000 -6,857,000 9,911,000 -2,641,000 -12,696,000 -6,951,000 14,153,000 -2,873,000 -1,003,000 -18,622,000 9,743,000 -18,410,000 -6,367,000 409,000 14,221,000 2,281,000 3,818,000 -26,401,000 6,026,000 -17,985,000 6,244,000 -12,026,000 
          net cash from financing activities
        -99,376,000 7,351,000 -79,799,000 -83,240,000 21,490,000 -2,659,000 20,513,000 11,738,000 36,143,000 55,046,000 16,503,000 66,138,000 -114,170,000 -88,240,000 37,978,000 46,087,000 76,501,000 109,900,000 -27,817,000 189,212,000 -59,637,000 22,807,000 217,712,000 178,161,000 132,139,000 -166,025,000 -208,227,000 -7,890,000 -684,750,000 17,665,000 86,795,000 -376,852,000 -20,108,000 -17,893,000 21,552,000 -224,420,000 -27,458,000 -22,901,000 5,283,000 -140,721,000 29,137,000 -106,017,000 50,425,000 13,747,000 -270,738,000 -78,830,000 -26,061,000 -453,695,000 -22,008,000 66,431,000 -10,178,000 -168,077,000 -366,274,000 148,542,000 -49,338,000 -105,960,000 -31,046,000 -56,625,000 -38,989,000 -366,641,000 -319,531,000 -216,540,000 -179,770,000 -413,834,000 11,905,000 -277,616,000 
          net increase in cash, cash equivalents, and restricted cash
        357,098,000 -8,972,000 -95,719,000                -63,430,000  -174,017,000          -3,510,000                                    
          cash, cash equivalents, and restricted cash at beginning of year
        172,956,000                                                                
          cash, cash equivalents and restricted cash at end of period
        357,098,000 -8,972,000 77,237,000  1,010,000 -31,005,000 140,403,000  -76,480,000 3,731,000 188,634,000 4,325,000 131,132,000 -83,314,000 177,623,000        374,816,000 84,477,000 27,318,000 -132,482,000 198,389,000 -31,704,000 -34,641,000                                      
          net cash from investing activities
         -25,989,000 -19,748,000 144,960,000 -36,918,000 -36,352,000 -41,089,000 3,728,000 -137,489,000 -63,401,000 -63,234,000 -37,793,000 42,428,000 -13,941,000 -111,448,000 -54,767,000 -114,592,000 -64,114,000 -37,937,000 226,644,000 -195,899,000 -62,056,000 -98,014,000 -189,408,000 -213,530,000 -54,879,000 252,404,000 -117,276,000 532,809,000 -122,059,000 -171,628,000 288,843,000 -96,985,000 -90,916,000 -86,238,000 136,488,000 -79,550,000 -89,140,000 -65,571,000 44,822,000 -131,871,000 -104,291,000 20,443,000 -101,997,000 176,988,000 -15,224,000 -46,089,000 364,351,000 -32,390,000 -193,200,000 -73,569,000 75,445,000 65,560,000 -22,372,000 -6,966,000 15,294,000 -32,518,000 -1,020,000 8,826,000 244,426,000 236,481,000 158,246,000 -8,899,000 408,209,000 -113,534,000 17,543,000 
          proceeds from non-recourse construction loans
         12,748,000 9,589,000 245,561,000 32,641,000 23,358,000 28,982,000                                                            
          principal repayments on non-recourse construction loans
                                                                          
          purchase of interest rate contracts
         -263,000 -313,000                                                                
          dividends paid on common stock and op units
         -88,213,000                                                                
          mezzanine investment loss
               154,801,000 756,000 129,000 128,000                                                        
          share-based compensation
           1,637,000 1,587,000 1,604,000 1,666,000 1,589,000 1,667,000 1,446,000 4,519,000 1,009,000 1,949,000                                                      
          loss on extinguishment of debt
               9,000   85,000 1,419,000                                                      
          lease modification income
                   -1,576,000                                                      
          net cash received from lease incentive
                                                                          
          purchases of real estate
                 877,000 -29,364,000 -53,266,000 -47,492,000 -51,386,000 -11,985,000 -6,230,000              -3,517,000 -3,194,000 -4,995,000  -281,833,000 -3,844,000 -2,275,000  -943,000 -100,464,000 -40,800,000  -118,482,000 -1,111,000 -12,870,000  -31,283,000 -18,548,000 -896,000             -36,748,000  -2,436,000 
          investment in iqhq
                   -14,227,000                                                    
          redemption of iqhq investment
                                                                         
          distributions received from unconsolidated real estate partnerships
                                                                        
          investment in unconsolidated real estate partnerships
              -405,000 -1,994,000   -2,790,000 -634,000                                                      
          proceeds from dispositions of unconsolidated real estate partnerships
                                                                          
          purchase of treasury bill
                                                                         
          proceeds from treasury bill
                                                                          
          proceeds from non-recourse property debt
                   81,500,000 60,000,000 574,720,000 40,000,000     -568,756,000       867,414,000 360,613,000 146,649,000 97,250,000 68,535,000 227,000,000 152,453,000 30,495,000 7,766,000 119,608,000 35,348,000 179,173,000 18,473,000 105,373,000 20,156,000 23,444,000 39,530,000 45,323,000 76,635,000 29,349,000 81,658,000 108,959,000 18,640,000 100,080,000 15,574,000            
          proceeds from sale of participation in mezzanine investment
                                                                        
          principal repayments on notes payable to air
                   -147,039,000                                                      
          payments on finance leases
              -175,000 -473,000 -698,000 -727,000 -796,000 -416,000 -431,000                                                      
          payments of prepayment premiums
                   -61,000 -4,345,000                                                      
          dividends paid on common stock
                                                                          
          redemption of redeemable noncontrolling interests
                                                                         
          redemption of noncontrolling interest in real estate partnership
                                                                          
          purchase of noncontrolling interests in consolidated real estate partnerships
                                                                          
          cash, cash equivalents and restricted cash at end of year
                                                                          
          amortization of debt issuance costs and other
            7,760,000 5,076,000 3,339,000 765,000 684,000 306,000 808,000 638,000 728,000 607,000 814,000 583,000 192,000 371,000 238,000                                                
          net decrease in cash, cash equivalents, and restricted cash
            1,010,000 -31,005,000 1,136,000 23,382,000 -76,480,000 3,731,000 -41,132,000 4,325,000 131,132,000 -83,314,000 -66,959,000  -32,472,000                                                  
          cash, cash equivalents, and restricted cash at beginning of period
            139,267,000  229,766,000 244,582,000 298,735,000 -167,582,000          142,541,000                                    
          income from unconsolidated real estate partnerships
             -258,000 -312,000 -261,000 -319,000 -121,000 -174,000 -120,000 -159,000 -44,000 -256,000 -230,000 -235,000 -253,000 -255,000                                                
          realized and unrealized losses on interest rate options
              -1,672,000 2,161,000 -954,000 -3,383,000 1,057,000                                                        
          proceeds from interest rate options
              1,847,000 1,724,000                                                           
          other assets
               -1,722,000 3,301,000 -3,482,000 2,238,000 -4,865,000 20,341,000 -21,189,000 6,752,000 -7,481,000 230,000 8,071,000 -19,231,000                                                
          accrued liabilities and other
               -5,217,000 5,414,000 2,476,000 -9,162,000 -21,922,000 -2,106,000 2,097,000 -5,625,000                                                    
          proceeds from disposition of real estate
                   16,849,000 116,365,000                                                      
          proceeds from construction loans
               47,022,000 54,271,000 37,661,000 35,491,000 38,920,000 20,679,000 17,982,000 15,625,000 22,865,000 22,182,000                                                  
          principal repayments on construction loans
                                                                         
          purchase of interest rate options
                  -2,397,000 -2,772,000                                                      
          redemption of op units
               -372,000 -88,000 -367,000 -254,000                                                        
          proceeds from interest rate option
                    1,805,000                                                      
          impairment
                                                                          
          mezzanine investment
                   204,229,000 -8,423,000 -8,330,000 -8,237,000                                                    
          gain on disposition of real estate
                   -5,859,000 -75,539,000                                                      
          net cash received from development property lease terminations
                                                                         
          change in aimco predecessor investment
                                                                          
          dividend paid on common stock
                                                                         
          redemption of noncontrolling interests
                                                                         
          realized and unrealized gains on interest rate options
                                                                          
          realized and unrealized gains on equity investments
                                                                          
          redemption of common and preferred op units
                    -76,000                                                      
          unrealized gains on interest rate options
                     -11,982,000 -18,778,000                                                    
          realized gain on interest rate option
                                                                          
          gain on equity investment redemption
                                                                          
          distributions to noncontrolling interests in real estate partnerships
                                                                          
          contributions from noncontrolling interests in consolidated real estate partnerships
                     9,718,000                                                    
          contributions from redeemable noncontrolling interests in consolidated real estate partnerships
                     13,513,000 6,879,000                                                    
          redemption of redeemable noncontrolling interests in consolidated real estate partnerships
                     -5,094,000                                                    
          income tax benefit
                      -4,056,000 -3,689,000 -2,021,000 -2,760,000 -5,100,000     -1,193,000    56,697,000 -27,941,000 -4,395,000 -37,388,000                                    
          share based compensation
                      2,667,000 1,521,000 1,936,000 1,110,000 704,000                                                
          payments on financing leases
                      -24,516,000   -1,434,000 -3,699,000                                                
          unrealized losses on interest rate options
                       4,099,000 -2,231,000                                                  
          payment for mezzanine investment and related transaction costs
                                                                          
          proceeds from notes payable to air
                                                                          
          contribution from noncontrolling interests in consolidated real estate partnerships
                           -443,417,000                                              
          contribution from redeemable interests in real estate partnerships
                                                                          
          adjustments to reconcile net (loss) to net cash from operating activities:
                                                                          
          mezzanine investment income
                        -7,636,000 -7,551,000 -7,467,000                                                
          accounts payable, accrued liabilities and other
                        -1,479,000 -2,069,000 16,631,000                                                
          proceeds from non-recourse debt
                                                                          
          principal payments on finance leases
                                                                          
          purchase of interest rate option
                        -133,000 -182,000 -5,590,000                                                
          cash, cash equivalents, and restricted cash at end of period
                        -32,472,000 59,928,000 235,305,000  -174,017,000          139,031,000                                    
          unrealized (gains) on interest rate options
                          -25,347,000                                                
          income tax (benefit) expense
                             -2,879,000 -3,233,000                                            
          unrealized gain on interest rate option
                                                                          
          accounts receivable and other
                                                                          
          net increase in cash, cash equivalents and restricted cash
                              197,114,000 84,477,000   125,794,000 -31,704,000 -34,641,000                                      
          other adjustments
                            4,206,000 4,254,000 3,157,000  3,986,000 3,242,000 3,201,000  9,455,000 2,023,000 284,000  -9,180,000 -1,561,000 -3,741,000  -150,000 -1,631,000 -8,749,000  -5,885,000 -2,757,000 -8,495,000  -2,758,000 -1,876,000 3,425,000  5,458,000 1,855,000 -415,000  119,000 -10,800,000 2,651,000 -12,049,000 4,281,000 4,782,000 -6,504,000  30,888,000 13,789,000 10,126,000  943,000  
          net changes in operating assets and operating liabilities
                            5,626,000 11,911,000 -31,995,000  7,457,000 -10,603,000 -17,952,000  7,548,000 2,256,000 -19,487,000  3,302,000 -180,000 -32,460,000  -545,000 -5,649,000 -20,824,000  6,019,000 -3,647,000 -19,743,000  2,832,000 2,012,000 -30,971,000  -19,110,000 39,786,000 -31,382,000  11,447,000 20,711,000 -29,860,000 20,698,000 10,530,000 -48,038,000 -36,951,000  2,820,000 -9,128,000 -99,531,000  -49,828,000  
          purchases of real estate and deposits related to purchases of real estate
                            -90,779,000 -5,061,000 -2,733,000 -6,698,000 -87,870,000 -41,507,000 -2,236,000 -29,939,000 -7,040,000 -40,668,000 -164,650,000                                    
          purchases of corporate assets
                            -4,796,000 -3,639,000 -5,104,000 -2,759,000 -7,639,000 -3,867,000 -3,319,000 -2,188,000 -2,881,000 -1,702,000 -947,000 -1,541,000 -1,353,000 -3,195,000 -2,810,000 -1,068,000 -2,047,000 -2,661,000 -1,764,000 -2,040,000 -1,273,000 -1,185,000 -2,167,000 -2,074,000 -2,275,000 -2,331,000 -1,799,000  -3,495,000 -3,094,000 -2,029,000    -2,552,000   -3,641,000         
          proceeds from term loan
                                                                       
          net repayments of revolving credit facility
                                                                          
          payment of debt issuance costs
                                                                          
          payment of debt extinguishment costs
                                                                          
          repurchases of common stock
                            -10,004,000 -20,682,000                                        
          repurchases of preferred stock
                                                                         
          payment of dividends to holders of common stock
                            -60,945,000 -60,942,000 -61,116,000    -67,405,000 -58,567,000 -59,649,000 -59,636,000 -59,652,000 -56,390,000 -56,326,000 -56,333,000 -56,328,000 -51,618,000 -51,611,000 -51,527,000 -51,523,000 -46,814,000 -46,795,000 -46,715,000 -43,758,000 -38,014,000 -37,984,000 -38,034,000 -37,970,000 -35,019,000 -35,019,000 -35,018,000 -34,996,000 -29,124,000 -29,109,000 -23,967,000 -21,806,000            
          payment of dividends to holders of preferred stock
                                  -2,148,000 -2,149,000 -2,148,000 -2,149,000 -2,148,000 -2,149,000 -2,148,000 -2,149,000 -2,148,000 -2,148,000 -2,351,000 -2,758,000 -2,757,000 -2,757,000 -2,757,000 -2,758,000 -2,827,000 -3,592,000 -2,126,000 -659,000 -696,000 -700,000 -702,000 -700,000 -702,000 -872,000 -7,148,000 -16,560,000 -12,439,000 -12,513,000 -12,421,000 -12,456,000         
          payment of distributions to noncontrolling interests
                            -5,224,000 -5,197,000 -5,442,000 -5,300,000 -5,383,000 -5,236,000 -5,701,000 -6,647,000 -5,551,000 -5,096,000 -11,902,000 -10,970,000 -4,653,000 -5,386,000 -5,790,000 -6,680,000 -17,128,000 -5,475,000 -6,423,000 -11,375,000 -6,740,000 -33,083,000 -6,203,000 -7,003,000 -10,862,000 -7,471,000 -24,636,000 -29,931,000 -11,322,000 -6,811,000 -15,702,000 -19,964,000 -10,927,000 -11,233,000 -15,725,000 -19,036,000 -10,431,000 -11,542,000 -12,038,000 -23,810,000 -15,925,000 -22,475,000 -58,151,000    
          redemptions of noncontrolling interests in the aimco operating partnership
                            -17,485,000 -286,000 -1,584,000    -2,653,000                                        
          purchases of noncontrolling interests in consolidated real estate partnerships
                               -2,863,000                       -6,026,000 -8,221,000 -1,939,000 -589,000 -3,071,000 -19,794,000 -20,642,000 -27,638,000            
          net (repayments of) borrowings on revolving credit facility
                                  -90,360,000                                        
          net borrowings on (repayments of) revolving credit facility
                              318,845,000                                            
          cash, cash equivalents and restricted cash at beginning of period
                              177,702,000 72,595,000                                      
          benefit from real estate impairment loss
                                                                          
          gain on dispositions of real estate and the asset management business
                               -146,239,000                                           
          other
                                                                          
          accounts receivable and other assets
                                                                          
          proceeds from dispositions of real estate and the asset management business
                                                                          
          proceeds from repayments on notes receivable
                               36,000                                           
          (repayment of) proceeds from term loan
                                                                         
          net borrowings on revolving credit facility
                                     141,535,000 11,475,000  110,500,000 176,020,000 51,770,000           -56,660,000 59,660,000 -248,150,000 111,500,000 137,850,000 49,200,000    67,400,000 4,700,000   14,800,000    15,000,000    
          proceeds from issuance of non-recourse property debt
                                                                          
          principal repayments of non-recourse property debt
                                -182,556,000 -188,210,000 -19,580,000                                        
          repayment of term loan
                                                                          
          net repayments on revolving credit facility
                                                                          
          redemption of preferred stock
                                                                         
          payment of dividends to common stockholders
                                -57,969,000                                          
          payment of dividends to preferred stockholders
                                                                         
          redemption of noncontrolling interests in the aimco operating partnership
                                -827,000                                          
          net decrease in cash, cash equivalents and restricted cash
                                                                          
          purchases and redemptions of noncontrolling interests
                                    -861,000 -3,054,000 -8,341,000 -3,550,000 -1,100,000 -318,537,000 -4,628,000 -3,434,000                               
          amortization of debt issue costs and other
                                                                          
          payment of debt issue costs
                                                                          
          redemptions of preferred stock
                                                                          
          gain on dispositions of real estate and the asset management business, inclusive of related income tax
                                                                          
          gain on dispositions of real estate, inclusive of related income tax
                                                                          
          (gain) loss on dispositions of real estate, inclusive of related income tax
                                      -50,324,000                                    
          gain on dispositions of real estate, net of tax
                                       -298,678,000 233,000   -156,564,000 -14,498,000 -216,541,000 -6,187,000 -50,119,000 -44,781,000 -85,693,000 -26,153,000 -126,329,000 -66,662,000 -69,492,000                    
          changes in restricted cash
                                                                          
          net borrowings (repayments) on revolving credit facility
                                             54,460,000 79,080,000                          218,800,000  
          proceeds from issuance of common stock
                                               -5,000 366,585,000         -58,000 35,837,000   11,039,000 33,799,000 27,174,000         
          net increase in cash and cash equivalents
                                         -1,312,000 3,830,000 13,336,000 -7,317,000 -9,229,000 13,665,000 5,548,000 -1,594,000 -117,655,000 135,519,000      20,699,000   -18,102,000 -210,449,000       -25,774,000    80,629,000 -47,378,000 -127,033,000 
          cash and cash equivalents at beginning of period
                                       61,244,000 50,789,000 28,971,000 55,751,000 84,413,000 91,066,000 111,325,000 81,260,000  299,676,000  210,461,000  
          cash and cash equivalents at end of period
                                       21,105,000 -8,081,000 -1,312,000 65,074,000 13,336,000 -7,317,000 -9,229,000 64,454,000 5,548,000 -1,594,000 -117,655,000 164,490,000 -215,000 -4,640,000 -4,576,000 38,402,000 -11,871,000 20,699,000 -2,635,000 49,558,000 -18,102,000 -210,449,000 229,730,000 83,234,000 -9,493,000 3,964,000 81,360,000 77,875,000  -5,080,000 18,881,000 93,233,000  163,083,000  
          cash flows from operating activities
                                                                          
          cash flows from investing activities
                                                                          
          change in restricted cash
                                        -173,000 335,000 1,445,000  270,849,000 -290,075,000 3,234,000  208,000 146,000 2,546,000  62,402,000 -67,675,000 -28,511,000  -2,130,000                  
          cash flows from financing activities
                                                                          
          net decrease in cash and cash equivalents
                                                   -215,000 -4,640,000 -4,576,000 -17,349,000    -34,855,000    -7,832,000  3,964,000 -29,965,000 -3,385,000    -206,443,000    
          gain on dispositions of real estate, inclusive of tax
                                          394,000                                
          net (repayments) borrowings on revolving credit facility
                                                 47,520,000 -112,330,000                        
          proceeds from issuance of preferred stock
                                                   -69,000 -38,000       -18,000 9,836,000            
          redemptions and repurchases of preferred stock
                                                           18,000 -300,018,000              
          deposits for purchases of real estate
                                                                          
          benefit from real estate impairment losses
                                                   407,000        -2,452,000 -2,270,000 6,707,000 6,364,000            
          amortization of deferred loan costs and other
                                                                          
          adjustments to net income from discontinued operations
                                                                          
          purchase of property loans
                                                                         
          proceeds from repayment of property loans and option value
                                                                          
          proceeds from common stock option exercises
                                                   181,000 459,000 107,000 21,000 10,000 983,000 1,000 47,052,000 1,854,000            
          redemption and repurchase of preferred stock
                                                -27,000,000                        
          purchases of real estate and investments in unconsolidated real estate partnerships
                                                           11,000 -9,984,000 -39,738,000 -40,005,000            
          purchase of west harlem first mortgage property loans
                                                                          
          proceeds from repayment of west harlem property loans and option value
                                                                          
          proceeds from sales of and distributions from unconsolidated real estate partnerships
                                                                          
          discontinued operations
                                                        -65,589,000 -2,669,000 -1,951,000  -35,726,000 -38,072,000 -34,230,000 -28,647,000 -13,507,000 -3,134,000 -19,384,000  -56,979,000 -33,805,000 -8,153,000  1,158,000  
          repurchase of preferred stock
                                                    -16,000 -9,500,000                    
          equity in (income) losses of unconsolidated real estate partnerships
                                                       -21,000 -277,000 -104,000 -524,000                
          gain on dispositions of unconsolidated real estate and other
                                                               -3,094,000 -809,000 -1,212,000 -2,642,000 -3,914,000 -3,969,000      
          purchases of interests in unconsolidated real estate and corporate assets
                                                                          
          purchase of investment in debt securities
                                                                          
          gain on dispositions of interests in unconsolidated real estate and other
                                                           -1,251,000 -16,033,000 -2,422,000 -2,180,000            
          proceeds from sale of interests in and distributions from unconsolidated real estate partnerships
                                                        -2,000                  
          equity in losses of unconsolidated real estate partnerships
                                                           1,608,000 -205,000 2,242,000 763,000            
          stock-based compensation expense
                                                                          
          accounts receivable
                                                                          
          net increase in cash from consolidation and deconsolidation of entities
                                                                  13,118,000        
          payments on term loans
                                                                  -45,000,000  -90,000,000 -50,000,000    
          proceeds from sale of interests in and distributions from real estate partnerships
                                                             6,194,000 8,504,000 8,039,000 1,974,000 1,329,000         
          purchase of investments in debt securities
                                                                          
          originations of notes receivable from unconsolidated real estate partnerships
                                                               -230,000 -50,000 -361,000 -220,000  -1,275,000 -965,000 -3,146,000  -3,497,000  
          proceeds from collection of notes receivable
                                                                          
          proceeds from class a common stock option exercises
                                                               1,806,000      -225,000 316,000 2,000 
          payment of dividends to holders of class a common stock
                                                               -14,498,000 -14,338,000 -14,239,000         
          equity in losses (earnings) of unconsolidated real estate partnerships
                                                                          
          proceeds from repayment of notes receivable
                                                                5,823,000 441,000 117,000 561,000 327,000 2,908,000 1,468,000 1,892,000 4,880,000  
          proceeds from property loans
                                                                341,417,000 321,184,000 49,854,000 156,150,000 5,490,000 437,654,000 173,149,000 426,985,000 213,321,000 236,937,000 
          principal repayments on property loans
                                                                -376,224,000 -271,495,000 -35,369,000 -231,622,000 -162,015,000 -494,755,000 -187,926,000 -438,108,000 -136,197,000 -26,845,000 
          principal repayments on tax-exempt bond financing
                                                                -981,000 -97,466,000 -886,000 -35,734,000 -51,354,000 -66,455,000 -4,319,000 -128,074,000 -1,228,000 -1,586,000 
          equity in losses (income) of unconsolidated real estate partnerships
                                                                 1,648,000         
          benefit from impairment losses on real estate development assets
                                                                          
          benefit from operating real estate impairment losses
                                                                          
          distributions of earnings from unconsolidated entities
                                                                          
          proceeds from sale of interests and distributions from real estate partnerships
                                                                          
          purchases of partnership interests and other assets
                                                                  -1,148,000 -2,888,000 -1,387,000 -1,217,000 -1,350,000 -5,181,000 -8,413,000  
          originations of notes receivable
                                                                          
          proceeds from tax-exempt bond financing
                                                                          
          (payments on) proceeds from other borrowings
                                                                          
          repurchases and redemptions of preferred stock
                                                                          
          repurchases of class a common stock
                                                                        -199,370,000  
          payment of class a common stock dividends
                                                                  -11,649,000 -11,543,000 -11,628,000 -11,781,000 -60,383,000 -53,456,000 -54,655,000 -57,203,000 
          payment of preferred stock dividends
                                                                  -12,922,000 -12,935,000 -12,987,000 -13,127,000 -13,166,000 -13,606,000 -14,208,000 -17,991,000 
          cash and cash equivalents at beginning of year
                                                                          
          cash and cash equivalents at end of year
                                                                          
          proceeds from sales of interests in and distributions from unconsolidated real estate partnerships
                                                                          
          proceeds from sales of interests in unconsolidated real estate partnerships
                                                                  2,065,000        
          change in funds held in escrow from tax-free exchanges
                                                                       4,136,000 345,000 -94,000 
          (payments on) borrowings under term loans
                                                                          
          proceeds from (payments on) other borrowings
                                                                          
          net (decrease)/increase in cash and cash equivalents
                                                                          
          (gain) loss on dispositions of unconsolidated real estate
                                                                      -10,862,000    
          deficit distributions to minority partners
                                                                          
          real estate impairment losses (recoveries)
                                                                          
          deferred income tax benefit
                                                                          
          minority interest in consolidated real estate partnerships
                                                                          
          minority interest in aimco operating partnership
                                                                          
          distributions of earnings to minority interest in consolidated real estate partnerships
                                                                          
          gain on disposition of real estate, net of minority partners’ interest
                                                                          
          cash from newly consolidated properties
                                                                          
          repurchase of class a common stock
                                                                         -121,674,000 
          principal repayments received on notes due on class a common stock purchases
                                                                          
          payment of distributions to minority interest
                                                                       -110,203,000 -42,318,000  
          gain on dispositions of unconsolidated real estate
                                                                          
          distributions from investments in unconsolidated real estate partnerships
                                                                          
          proceeds from tax exempt bond financing
                                                                        21,200,000  
          deferred income tax provision
                                                                          
          gain on dispositions of real estate, net of minority partners’ interest
                                                                          
          proceeds from sale of interests in real estate partnerships
                                                                          
          borrowings under term loans
                                                                         
          payments on other borrowings
                                                                          
          redemption of mandatorily redeemable preferred securities
                                                                          
          contributions from minority interest
                                                                          
          other adjustments to reconcile net income
                                                                          
          net changes in operating assets and operating liabilities, net of effects from acquisitions
                                                                          
          adjustments to income from discontinued operations
                                                                          
          cash recognized upon initial consolidations of properties
                                                                          
          purchases of general and limited partnership interests and other assets; net of cash acquired
                                                                          
          loans advanced to unconsolidated real estate partnerships
                                                                          
          proceeds from repayment of loans advanced to unconsolidated real esate partnerships
                                                                          
          proceeds from tax-exempt bonds
                                                                          
          repayments on revolving loan commitments
                                                                          
          proceeds from issuance of preferred stock; net of issuance costs
                                                                          
          principal payments received on notes due on class a stock purchases
                                                                          
          distributions of minority interests
                                                                          
          purchases of general and limited partnership interests and other assets
                                                                          
          distributions received from investments in unconsolidated real estate partnerships
                                                                          
          proceeds from tax exempt bonds
                                                                          
          net borrowings (repayments) on term loans and revolving credit facility
                                                                          
          cumulative effect of change in accounting principle
                                                                          
          distributions and sales proceeds from investments in real estate partnerships
                                                                          
          net borrowings (paydowns) on term loans and revolving credit facility
                                                                          
          proceeds (paydowns) on other borrowings
                                                                          
          purchases of non-real estate related corporate assets
                                                                          
          proceeds from sale of investments and other assets
                                                                          
          cash paid in connection with merger/acquisition related costs
                                                                          
          proceeds from secured notes payable borrowings
                                                                          
          principal repayments on secured notes payable
                                                                          
          proceeds from other borrowings
                                                                          
          payment of loan costs
                                                                          
          proceeds from issuance (redemption) of mandatorily redeemable preferred securities
                                                                          
          proceeds from issuance of class a common stock, high performance units and exercise of options/warrants and other
                                                                          
          repurchase of class a common stock, redemption of op units and warrant purchase
                                                                          
          net borrowings on term loans and revolving credit facility
                                                                          
          supplemental cash flow information:
                                                                          
          secured debt assumed in connection with purchase of real estate
                                                                          
          funds held in escrow from tax-free exchanges
                                                                          
          proceeds from issuance of class a common stock, high performance units and exercise of options/warrants
                                                                          
          repurchase of class a common stock and redemption of op units
                                                                          
          gain on dispositions of real estate related to unconsolidated entities and other
                                                                          
          impairment loss on investment in unconsolidated real estate partnerships
                                                                          
          recovery of deficit distributions to minority partners
                                                                          
          impairment loss on real estate assets sold or held for sale
                                                                          
          deferred income taxes