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Kilroy Realty Corporation
(NYSE:KRC) 

KRC stock logo

Kilroy Realty Corporation (NYSE: KRC, the ?company?, ?KRC?) is a leading West Coast landlord and developer, with a major presence in San Diego, Greater Los Angeles, the San Francisco Bay Area, and the Pacific Northwest. The company has earned global recognition for sustainability, building operation...

Founded: 1947
Full Time Employees: 267
Sector: Real Estate
Industry: REIT-Office

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    Unit: USD2026-03-31 2025-12-31 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 2015-06-30 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 
                                                                                      
      revenues:
                                                                                      
      rental income
    265,330,000 267,363,000 274,909,000 285,071,000 266,244,000 281,355,000 285,951,000 275,919,000 274,890,000 265,643,000 280,681,000 281,309,000 290,104,000 281,688,000 272,546,000 268,576,000 263,208,000 259,145,000 230,720,000 224,473,000 234,656,000 228,195,000 227,122,000 218,356,000 218,633,000 217,140,000 212,321,000 197,629,000 199,382,000 166,957,000 162,288,000 164,515,000 162,871,000 158,369,000 159,954,000 158,925,000 156,648,000 150,466,000 146,539,000 143,653,000 133,755,000 133,463,000 129,510,000 131,450,000 130,932,000 127,417,000 115,221,000 115,555,000 112,056,000 110,258,000 104,939,000 108,342,000 107,380,000 101,288,000 95,405,000 94,265,000 90,219,000 80,387,000 89,306,000 83,452,000 80,290,000 76,406,000 72,608,000 65,038,000 60,656,000 60,690,000 61,297,000 62,598,000 63,064,000 63,747,000 64,546,000 61,486,000 62,305,000 56,343,000 60,560,000 56,454,000 56,315,000 55,356,000 56,641,000 57,133,000 56,573,000  
      other property income
    4,723,000 4,824,000 4,835,000 4,821,000 4,600,000 5,024,000 3,987,000 4,812,000 3,691,000 3,373,000 2,913,000 2,973,000 2,698,000 2,656,000 3,412,000 2,608,000 2,293,000 1,940,000 1,606,000 1,510,000 990,000 1,137,000 1,192,000 1,067,000 2,695,000 3,095,000 3,204,000 2,863,000 1,820,000 3,374,000 2,520,000 2,990,000 801,000 861,000 1,915,000 2,406,000 3,364,000 1,048,000 5,403,000 342,000 287,000 456,000 362,000 603,000 725,000 1,030,000 2,457,000 3,047,000 2,157,000 534,000 1,102,000 5,737,000 230,000 1,462,000 223,000 592,000 887,000 3,803,000 348,000 1,102,000 1,413,000 621,000 985,000 895,000 445,000 512,000 354,000 1,049,000 1,795,000 803,000 5,285,000 457,000 304,000 287,000 134,000 1,951,000 1,106,000 725,000 521,000 9,961,000 937,000  
      total revenues
    270,053,000 272,187,000 279,744,000 289,892,000 270,844,000 286,379,000 289,938,000 280,731,000 278,581,000 269,016,000 283,594,000 284,282,000 292,802,000 284,344,000 275,958,000 271,184,000 265,501,000 261,085,000 232,326,000 225,983,000 235,646,000 229,332,000 228,314,000 219,423,000 221,328,000 220,235,000 215,525,000 200,492,000 201,202,000 190,842,000 186,562,000 187,072,000 182,822,000 177,561,000 181,534,000 180,598,000 179,308,000 168,645,000 168,348,000 160,133,000 145,446,000 147,413,000 141,553,000 146,227,000 146,082,000 141,765,000 129,024,000 129,194,000 125,785,000 120,602,000 115,697,000 124,478,000 117,497,000 111,112,000 104,293,000 103,922,000 99,410,000 90,697,000 97,337,000 92,064,000 88,125,000 82,941,000 79,804,000 72,416,000 66,819,000 67,379,000 68,494,000 71,050,000 72,512,000 72,437,000 77,100,000 69,629,000 70,802,000 62,223,000 67,639,000 64,630,000 63,979,000 62,789,000 63,052,000 73,450,000 63,093,000  
      yoy
    -0.29% -4.96% -3.52% 3.26% -2.78% 6.45% 2.24% -1.25% -4.86% -5.39% 2.77% 4.83% 10.28% 8.91% 18.78% 20.00% 12.67% 13.85% 1.76% 2.99% 6.47% 4.13% 5.93% 9.44% 10.00% 15.40% 15.52% 7.17% 10.05% 7.48% 2.77% 3.58% 1.96% 5.29% 7.83% 12.78% 23.28% 14.40% 18.93% 9.51% -0.44% 3.98% 9.71% 13.18% 16.14% 17.55% 11.52% 3.79% 7.05% 8.54% 10.93% 19.78% 18.19% 22.51% 7.15% 12.88% 12.81% 9.35% 21.97% 27.13% 31.89% 23.10% 16.51% 1.92% -7.85% -6.98% -11.16% 2.04% 2.42% 16.42% 13.99% 7.73% 10.66% -0.90% 7.27% -12.01% 1.40%      
      qoq
    -0.78% -2.70% -3.50% 7.03% -5.42% -1.23% 3.28% 0.77% 3.56% -5.14% -0.24% -2.91% 2.97% 3.04% 1.76% 2.14% 1.69% 12.38% 2.81% -4.10% 2.75% 0.45% 4.05% -0.86% 0.50% 2.19% 7.50% -0.35% 5.43% 2.29% -0.27% 2.32% 2.96% -2.19% 0.52% 0.72% 6.32% 0.18% 5.13% 10.10% -1.33% 4.14% -3.20% 0.10% 3.05% 9.87% -0.13% 2.71% 4.30% 4.24% -7.05% 5.94% 5.75% 6.54% 0.36% 4.54% 9.61% -6.82% 5.73% 4.47% 6.25% 3.93% 10.20% 8.38% -0.83% -1.63% -3.60% -2.02% 0.10% -6.05% 10.73% -1.66% 13.79% -8.01% 4.66% 1.02% 1.90% -0.42% -14.16% 16.42%   
      expenses:
                                                                                      
      property expenses
    59,283,000 64,673,000 61,764,000 58,575,000 58,714,000 63,249,000 63,593,000 59,279,000 57,320,000 60,731,000 59,445,000 55,008,000 53,780,000 55,323,000 52,075,000 49,922,000 45,424,000 45,519,000 40,842,000 40,482,000 38,859,000 39,070,000 39,236,000 37,829,000 38,983,000 42,044,000 41,308,000 38,536,000 38,149,000 34,386,000 35,163,000 32,567,000 31,671,000 32,356,000 33,070,000 33,304,000 31,241,000 28,696,000 30,050,000 29,221,000 25,965,000 27,114,000 26,684,000 26,866,000 24,714,000 25,066,000 25,801,000 25,713,000 25,094,000 24,878,000 25,123,000 24,732,000 23,773,000 21,451,000 21,871,000 21,196,000 17,535,000 18,321,000 19,361,000 17,583,000 17,689,000 15,659,000 15,845,000 14,543,000 12,020,000 12,098,000 12,699,000 12,582,000 12,392,000 12,690,000 12,824,000 11,873,000 11,488,000 8,724,000 12,285,000 11,440,000 10,858,000 10,477,000 11,457,000 10,913,000 10,176,000  
      real estate taxes
    28,782,000 26,556,000 25,878,000 26,765,000 28,365,000 24,026,000 26,677,000 29,009,000 29,239,000 21,000,000 28,363,000 28,277,000 28,228,000 27,151,000 27,415,000 25,433,000 25,870,000 21,681,000 24,153,000 22,109,000 25,266,000 24,294,000 23,868,000 21,854,000 22,202,000 21,534,000 19,998,000 17,926,000 18,639,000 18,399,000 17,462,000 17,813,000 17,146,000 15,571,000 16,371,000 16,543,000 17,964,000 15,828,000 14,501,000 13,845,000 11,032,000 12,991,000 12,087,000 12,430,000 12,715,000 12,469,000 11,008,000 10,910,000 11,173,000 10,449,000 10,295,000 10,439,000 10,337,000 9,341,000 9,312,000 8,881,000 8,389,000 7,643,000 8,360,000 8,413,000 8,169,000 7,362,000 7,614,000 6,482,000 6,036,000 6,070,000 5,988,000 6,143,000 6,140,000 5,959,000 5,827,000 4,843,000 5,479,000 4,566,000 5,374,000 4,861,000 4,739,000 4,655,000 4,746,000 4,766,000 4,802,000  
      ground leases
    3,187,000 2,991,000 3,018,000 3,019,000 3,020,000 2,990,000 2,977,000 2,996,000 2,752,000 2,560,000 2,390,000 2,413,000 2,369,000 2,092,000 1,771,000 1,876,000 1,826,000 1,862,000 1,708,000 2,023,000 1,828,000 2,125,000 2,119,000 2,330,000 2,317,000 1,978,000 2,049,000 2,114,000 1,972,000 1,450,000 1,579,000 1,586,000 1,561,000 1,586,000 1,562,000 1,547,000 1,642,000 933,000 909,000 768,000 829,000 645,000 862,000 813,000 776,000 769,000 771,000 773,000 762,000 839,000 929,000 889,000 847,000 892,000 859,000 615,000 802,000 513,000 503,000 424,000 339,000 336,000 336,000 370,000 -58,000 370,000 398,000 432,000 397,000 391,000 431,000 400,000 395,000 53,000 511,000 502,000 516,000 509,000 514,000 474,000 519,000  
      general and administrative expenses
    20,699,000 19,485,000 18,247,000 18,475,000 16,901,000 17,470,000 18,066,000 18,951,000 17,579,000 22,078,000 24,761,000 22,659,000 23,936,000 25,217,000 23,524,000 22,120,000 22,781,000 23,267,000 22,990,000 24,507,000 21,985,000 23,085,000 18,572,000 38,597,000 19,010,000 22,365,000 22,576,000 19,857,000 23,341,000 33,872,000 19,277,000 21,763,000 15,559,000 16,831,000 14,514,000 14,303,000 14,933,000 16,080,000 13,533,000 13,979,000 13,437,000 12,065,000 10,799,000 12,633,000 12,768,000 12,346,000 11,138,000 11,857,000 10,811,000 9,910,000 10,226,000 9,855,000 9,669,000 9,443,000 8,727,000 9,251,000 8,767,000 7,793,000 6,355,000 7,440,000 6,560,000 6,867,000 7,273,000 6,728,000 7,095,000 17,915,000 7,662,000 7,308,000 7,053,000 10,210,000 9,627,000 9,187,000 9,236,000 9,353,000 8,719,000 9,460,000 9,048,000 7,478,000 5,673,000 4,714,000 4,934,000  
      leasing costs
    3,010,000 2,592,000 2,610,000 2,277,000 2,873,000 2,013,000 2,353,000 2,119,000 2,279,000 1,956,000 1,852,000 1,326,000 1,372,000 1,404,000 1,015,000 1,447,000 1,013,000 876,000 798,000 883,000 692,000 721,000 986,000 1,330,000 1,456,000 2,016,000 1,192,000 2,650,000 1,757,000                                                      
      depreciation and amortization
    94,344,000 92,623,000 87,487,000 87,625,000 87,119,000 89,121,000 91,879,000 87,151,000 88,031,000 86,016,000 85,224,000 90,362,000 93,676,000 91,396,000 81,140,000 96,415,000 88,660,000 87,309,000 73,213,000 73,589,000 75,932,000 72,990,000 71,863,000 80,085,000 74,370,000 69,513,000 69,230,000 68,252,000 66,135,000 64,860,000 62,700,000 64,006,000 62,715,000 60,149,000 62,567,000 62,251,000 60,919,000 56,782,000 56,666,000 53,346,000 50,440,000 51,727,000 49,422,000 51,658,000 51,487,000 53,770,000 50,032,000 50,767,000 49,202,000 50,920,000 47,569,000 49,304,000 50,391,000 46,085,000 44,109,000 40,624,000 36,746,000 35,707,000 36,152,000 32,248,000 29,311,000 29,095,000 30,054,000 23,722,000 20,938,000 21,019,000 21,968,000 23,470,000 21,185,000 21,212,000 20,661,000 21,536,000 19,866,000 19,062,000 18,771,000 17,745,000 17,237,000 17,242,000 17,908,000 18,294,000 17,630,000  
      total expenses
    209,305,000 208,920,000 199,004,000 196,736,000 196,992,000 198,869,000 205,545,000 199,505,000 197,200,000 194,341,000 202,035,000 200,045,000 203,361,000 202,583,000 186,940,000 197,213,000 185,574,000 180,514,000 163,704,000 163,593,000 164,562,000 162,285,000 156,644,000 182,025,000 158,338,000 159,450,000 156,353,000 149,335,000 149,993,000 151,938,000 137,519,000 143,376,000 128,387,000 127,019,000 129,120,000 128,357,000 127,997,000 119,257,000 115,847,000 111,873,000 101,765,000 104,898,000 99,858,000 104,712,000 102,830,000 104,631,000 99,239,000 100,629,000 97,270,000 97,756,000 94,834,000 95,383,000 95,767,000 88,403,000 85,434,000 82,380,000 73,769,000 71,704,000 71,889,000 67,422,000 62,566,000 59,723,000 60,619,000 52,790,000 58,326,000 68,724,000 59,884,000 60,560,000 60,809,000 62,323,000 59,106,000 60,491,000 56,632,000 53,306,000 54,558,000 52,054,000 51,882,000 50,518,000 50,666,000 50,425,000 50,557,000  
      other income
    389,000 44,000 91,000 190,000 -157,000                                                                              
      interest income
    954,000 2,205,000 3,119,000 512,000 1,134,000 8,240,500 9,688,000 10,084,000 13,190,000                                                                   371,000 619,000      
      interest expense
    -38,511,000 -32,148,000 -32,152,000 -30,844,000 -31,148,000 -33,245,000 -36,408,000 -36,763,000 -38,871,000 -32,325,000 -29,837,000 -26,383,000 -25,671,000 -23,550,000 -19,982,000 -20,121,000 -20,625,000 -18,726,000 -16,105,000 -21,390,000 -22,334,000 -20,976,000 -19,468,000 -15,884,000 -14,444,000 -13,932,000 -11,635,000 -11,727,000 -11,243,000 -12,436,000 -11,075,000 -12,712,000 -13,498,000 -14,564,000 -16,151,000 -17,973,000 -17,352,000 -14,614,000 -14,976,000 -14,384,000 -11,829,000 -13,121,000 -12,819,000 -14,864,000 -16,878,000 -17,691,000 -16,608,000 -16,020,000 -17,252,000 -17,849,000 -18,853,000 -19,434,000 -19,734,000 -18,942,000 -19,854,000 -19,155,000 -21,163,000 -23,254,000 -24,051,000 -21,228,000 -20,876,000 -19,044,000 -15,853,000 -13,088,000 11,956,000 11,078,000 10,926,000 11,897,000 12,218,000 11,478,000 9,727,000 9,448,000 9,713,000 10,765,000 9,009,000 8,072,000 9,656,000 10,050,000 10,312,000 11,208,000 11,971,000  
      gains on sales of depreciable operating properties
    23,525,000  110,484,000                       29,633,000  7,169,000       37,250,000  2,257,000  18,312,000    78,522,000 31,428,000                                       
      impairment of real estate assets
    -61,778,000                                                                                  
      total other expenses
    -75,421,000 -46,158,000 81,542,000 -13,588,000 -30,171,000 -19,770,000 -26,720,000 -26,679,000 -25,681,000 -17,498,750 -22,822,000 -22,962,000 -24,211,000                                                                      
      net income
    -14,673,000 17,109,000 162,282,000 79,568,000 43,681,000 65,034,000 57,673,000 54,547,000 55,700,000 53,046,000 58,737,000 61,275,000 65,230,000 59,475,000 86,660,000 53,975,000 59,383,000 55,126,000 53,493,000 42,880,000 507,411,000 83,452,000 54,071,000 24,352,000 45,418,000 77,922,000 48,298,000 47,215,000 41,794,000 166,890,000 38,310,000 31,755,000 40,971,000 32,540,000 75,488,000 35,306,000 37,281,000 35,418,000 56,375,000 33,892,000 178,113,000 29,308,000 106,704,000 58,590,000 44,002,000 31,430,000 19,303,000 31,143,000 101,932,000 23,047,000 9,027,000 10,103,000 2,388,000 193,630,000 2,522,000 2,277,000 78,671,000 44,860,000 14,290,000 3,472,000 4,867,000 5,384,000 3,669,000 1,956,000 8,877,000 671,000 12,230,000 13,343,000 11,773,000 8,294,000 15,578,000 7,983,000 12,266,000 68,015,000 11,430,000 15,492,000 18,880,000 11,585,000 33,976,000 20,377,000 15,931,000  
      yoy
    -133.59% -73.69% 181.38% 45.87% -21.58% 22.60% -1.81% -10.98% -14.61% -10.81% -32.22% 13.52% 9.85% 7.89% 62.00% 25.87% -88.30% -33.94% -1.07% 76.08% 1017.20% 7.10% 11.95% -48.42% 8.67% -53.31% 26.07% 48.69% 2.01% 412.88% -49.25% -10.06% 9.90% -8.13% 33.90% 4.17% -79.07% 20.85% -47.17% -42.15% 304.78% -6.75% 452.78% 88.13% -56.83% 36.37% 113.84% 208.25% 4168.51% -88.10% 257.93% 343.70% -96.96% 331.63% -82.35% -34.42% 1516.42% 733.21% 289.48% 77.51% -45.17% 702.38% -70.00% -85.34% -24.60% -91.91% -21.49% 67.14% -4.02% -87.81% 36.29% -48.47% -35.03% 487.10% -66.36% -23.97% 18.51%      
      qoq
    -185.76% -89.46% 103.95% 82.16% -32.83% 12.76% 5.73% -2.07% 5.00% -9.69% -4.14% -6.06% 9.68% -31.37% 60.56% -9.11% 7.72% 3.05% 24.75% -91.55% 508.03% 54.34% 122.04% -46.38% -41.71% 61.34% 2.29% 12.97% -74.96% 335.63% 20.64% -22.49% 25.91% -56.89% 113.81% -5.30% 5.26% -37.17% 66.34% -80.97% 507.73% -72.53% 82.12% 33.15% 40.00% 62.82% -38.02% -69.45% 342.28% 155.31% -10.65% 323.07% -98.77% 7577.64% 10.76% -97.11% 75.37% 213.93% 311.58% -28.66% -9.60% 46.74% 87.58% -77.97% 1222.95% -94.51% -8.34% 13.34% 41.95% -46.76% 95.14% -34.92% -81.97% 495.06% -26.22% -17.94% 62.97% -65.90% 66.74% 27.91%   
      net income margin %
    -5.43% 6.29% 58.01% 27.45% 16.13% 22.71% 19.89% 19.43% 19.99% 19.72% 20.71% 21.55% 22.28% 20.92% 31.40% 19.90% 22.37% 21.11% 23.02% 18.97% 215.33% 36.39% 23.68% 11.10% 20.52% 35.38% 22.41% 23.55% 20.77% 87.45% 20.53% 16.97% 22.41% 18.33% 41.58% 19.55% 20.79% 21.00% 33.49% 21.16% 122.46% 19.88% 75.38% 40.07% 30.12% 22.17% 14.96% 24.11% 81.04% 19.11% 7.80% 8.12% 2.03% 174.27% 2.42% 2.19% 79.14% 49.46% 14.68% 3.77% 5.52% 6.49% 4.60% 2.70% 13.29% 1.00% 17.86% 18.78% 16.24% 11.45% 20.20% 11.47% 17.32% 109.31% 16.90% 23.97% 29.51% 18.45% 53.89% 27.74% 25.25%  
      net loss attributable to noncontrolling common units of the operating partnership
    185,000                                                -2,087,000 -66,500 -131,000 -157,000 22,000 -427,000 67,000 20,000  -80,000 -296,000 10,000  -32,000 4,000 60,000                   
      net income attributable to noncontrolling interests in consolidated property partnerships
    -4,779,000 -4,545,000 -4,538,000 -10,456,000 -4,298,000 -4,981,000 -4,786,000 -4,878,000 -5,278,000 -5,291,000 -5,460,000 -5,151,000 -8,062,000 -6,262,000 -6,239,000 -6,355,000 -5,739,000 -7,017,000 -6,005,000 -6,687,000 -4,894,000 -3,798,000 -4,258,000 -4,367,000 -4,896,000 -4,079,000 -3,600,000 -4,150,000 -4,191,000 -3,485,000 -3,219,000 -3,640,000 -3,974,000 -3,421,000 -2,984,000 -3,242,000 -3,133,000 -1,937,000 -1,027,000                                            
      total net income attributable to noncontrolling interests
    -4,594,000                                                                                  
      net income available to common stockholders
    -19,267,000 12,444,000 156,220,000 68,449,000 39,008,000 59,460,000 52,378,000 49,211,000 49,920,000 47,284,000 52,762,000 55,587,000 56,608,000 52,625,000 79,757,000 47,105,000 53,128,000 47,646,000 47,028,000 35,839,000 497,631,000 78,642,000 49,028,000 19,618,000 39,817,000 72,500,000 43,846,000 42,194,000 36,903,000 160,220,000 34,400,000 27,549,000 36,246,000 28,529,000 66,558,000 29,833,000 26,329,000 29,426,000 50,582,000 29,535,000 170,995,000 25,323,000 101,446,000 54,188,000 39,874,000 27,540,000 15,669,000 27,228,000 96,532,000 19,316,000 5,584,000 6,633,000 -903,000 185,838,000 -2,753,000 -800,000 67,540,000 39,907,000 10,195,000 -317,000 1,034,000 1,535,000 -126,000 -1,783,000 4,886,000 6,200,750 8,111,000 9,117,000 7,577,000              
      net income available to common stockholders per share – basic
    -0.16 0.11 1.32 0.58 0.33 0.51 0.44 0.41 0.42 0.4 0.45 0.47 0.48 0.45 0.68 0.4 0.45 0.4 0.4 0.3 4.27 0.68 0.42 0.17 0.37 0.68 0.41 0.41 0.36 1.59 0.34 0.27 0.36 0.28 0.67 0.3 0.27 0.29 0.54 0.32 1.85 0.26 1.1 0.61 0.45 0.32 0.18 0.33 1.17                                  
      net income available to common stockholders per share – diluted
    -0.16 0.11 1.31 0.57 0.33 0.5 0.44 0.41 0.42 0.4 0.45 0.47 0.48 0.44 0.68 0.4 0.45 0.4 0.4 0.3 4.26 0.68 0.42 0.17 0.37 0.68 0.41 0.41 0.36 1.58 0.33 0.27 0.36 0.28 0.67 0.3 0.26 0.28 0.54 0.31 1.84 0.25 1.09 0.61 0.45 0.32 0.18 0.32 1.14                                  
      weighted-average shares of common stock outstanding – basic
    117,636,517 118,278,990 118,295,812 118,285,328 118,194,588 117,649,111 117,830,481 117,375,262 117,337,666 117,160,173    116,806,575    116,429,130    113,241,341    103,200,568    99,972,359    98,113,561    92,342,483    89,854,096    83,090,235    77,343,853                                 
      weighted-average shares of common stock outstanding – diluted
    117,636,517 118,832,035 118,822,262 118,683,337 118,664,430 118,156,987 118,243,913 117,663,190 117,960,926 117,506,255    117,220,047    116,948,643    113,719,622    103,849,168    100,482,365    98,727,331    93,023,034    90,395,775    84,967,720    79,108,878                                 
      revenues
                                                                                      
      expenses
                                                                                      
      net income attributable to noncontrolling common units of the operating partnership
     -120,000 -1,524,000 -663,000 -375,000 -593,000 -509,000 -458,000 -502,000 -471,000 -515,000 -537,000 -560,000 -588,000 -664,000 -515,000 -516,000 -463,000 -460,000 -354,000 -4,886,000 -1,012,000 -785,000 -367,000 -705,000 -1,343,000 -852,000 -871,000 -700,000 -3,185,000 -691,000 -566,000 -751,000 -590,000 -1,394,000 -616,000 -623,000 -743,000 -1,453,000 -829,000 -3,610,000 -489,000 -1,945,000 -1,090,000 -815,000 -578,000 -321,000 -603,000         -1,795,000    -34,000    -192,000 119,000 -320,000 -427,000 -397,000              
      total income attributable to noncontrolling interests
     -5,463,500 -6,062,000 -11,119,000 -4,673,000 -5,574,000 -5,295,000 -5,336,000 -5,780,000 -5,762,000 -5,975,000 -5,688,000 -8,622,000 -6,850,000 -6,903,000 -6,870,000 -6,255,000 -7,480,000 -6,465,000 -7,041,000 -9,780,000 -4,810,000 -5,043,000 -4,734,000 -5,601,000 -5,422,000 -4,452,000 -5,021,000 -4,891,000 -6,670,000 -3,910,000 -4,206,000 -4,725,000 -4,011,000 -4,378,000 -3,858,000 -3,756,000 -2,680,000 -2,480,000 -1,045,000                                           
      gain on sale of depreciable operating property
       16,554,000          4,332,250 17,329,000   114,457,750  543,000 457,288,000                                                              
      interest and other income
             10,696,000 7,015,000 3,421,000 1,460,000 1,264,000 295,000 125,000 81,000                                                             210,250 359,000 231,000 252,000  
      weighted-average common shares outstanding – basic
              117,184,609 117,154,946 117,059,329  116,872,953 116,822,234 116,650,228  116,456,796 116,451,931 116,344,375  115,226,324 115,084,897 106,875,234  104,841,176 100,972,355 100,901,390  100,676,778 99,691,700 98,744,220  98,352,139 98,275,471 97,388,137  92,227,016 92,209,955 92,224,522  92,150,341 88,126,187 86,896,776  83,161,323 82,277,845 82,124,538                                  
      weighted-average common shares outstanding – diluted
              117,495,246 117,359,517 117,406,518  117,242,411 117,184,938 117,060,094  116,962,680 116,917,463 116,801,384  115,667,657 115,539,725 107,389,575  105,359,904 101,809,541 101,443,179  101,228,334 100,150,856 99,213,610  98,911,612 98,827,378 98,018,157  92,920,406 92,824,786 92,734,543  92,639,065 88,645,868 87,434,366  85,110,456 84,602,332 84,140,070                                  
      total other (expenses) income
                 -22,286,000 -2,358,000 -19,996,000 -20,544,000 100,422,000 -15,129,000 -19,510,000  16,405,000 -17,599,000 -13,046,000 -17,572,000 17,137,000 -10,874,000 -3,942,000 -9,415,000 -9,034,500 -10,733,000 -11,941,000 -13,464,000 -18,002,000 -14,625,000 -16,935,000 -16,287,000 -13,970,000 -14,438,000 -14,073,000 -11,558,000 -13,055,000 -13,513,000 -14,353,000 -16,518,000 -17,717,000 -16,617,000 -15,601,000 -17,075,000 -17,298,000 -18,180,000 -19,415,000 -19,342,000 -18,797,000 -19,524,000 -19,265,000 -20,679,000 -22,955,000 -24,021,000 -21,170,000 -20,692,000 -18,783,000 -15,516,000 -17,670,000                   
      interest income and other net investment gain
                     230,000 976,000 1,337,000 1,373,000 1,845,000 1,869,000 2,838,000 -3,128,000 1,436,000 761,000 616,000 1,828,000             44,250 -694,000 511,000                                       
      total other income
                        436,327,000                                             2,016,000 3,620,000         371,000 619,000 818,000 334,000 306,000 370,000  
      other (expenses) income
                                                                                      
      tenant reimbursements
                                 20,511,000 21,754,000 19,567,000 19,150,000 18,331,000 19,665,000 19,267,000 19,296,000 17,131,000 16,406,000 16,138,000 11,404,000 13,494,000 11,681,000 14,174,000 14,425,000 13,318,000 11,346,000 10,592,000 11,572,000 9,810,000 9,656,000 10,399,000 9,887,000 8,362,000 8,665,000 9,065,000 8,304,000 6,507,000 7,683,000 7,510,000 6,422,000 5,914,000 6,211,000 6,483,000 5,718,000 6,177,000 6,843,000 7,403,000 7,653,000 7,887,000 7,269,000 7,686,000 8,193,000 5,593,000 6,945,000 6,225,000 6,558,000 6,708,000 5,890,000 6,356,000 5,583,000  
      provision for bad debts
                                 -1,029,000 1,338,000 5,641,000 -265,000 526,000 1,036,000 409,000 1,298,000     256,000  47,000 242,000 14,500 58,000   185,000 124,000  95,000 500   2,000 35,250 -5,000 120,000 26,000 -220,000 -857,000 -12,000 26,000 174,000 243,000 -1,272,000 1,424,000 383,000 9,000 3,204,000 455,000 783,000 -111,000 -26,000 -172,000 107,000 56,000 56,000 525,000  
      interest income and other net investment gain/loss
                                 286,750 342,000 771,000 34,000                                                  
      income from operations before gains on sales of real estate
                                 27,759,000 38,310,000 31,755,000 40,971,000    35,024,000 26,093,250 38,063,000 34,187,000 32,123,000                                          
      net gain on sale of land
                                     112,250 449,000                                                
      net income attributable to kilroy realty corporation
                                 160,220,000 34,400,000 27,549,000 36,246,000 28,529,000 71,110,000 31,448,000 33,525,000 32,738,000 53,895,000 32,847,000 174,308,000 28,635,000 104,759,000 57,500,000 43,187,000 30,852,000 18,982,000 30,540,000 99,845,000 22,628,000 8,896,000 9,946,000 2,410,000 189,151,000 2,589,000 2,297,000 76,876,000 43,706,000 13,994,000 3,482,000 4,833,000 5,334,000 3,673,000 2,016,000 8,685,000 790,000 11,910,000                
      preferred dividends
                                      -808,000 -1,615,000 -3,351,000 -3,312,000 -3,313,000 -3,312,000 -3,313,000 -3,312,000 -3,313,000 -3,312,000 -3,313,000 -3,312,000 -3,313,000 -3,312,000 -3,313,000 -3,312,000 -3,312,000 -3,313,000 -3,313,000 -3,313,000 -2,533,000 -1,700,000 -3,021,000 -2,402,000 -2,402,000 -2,402,000 -2,402,000 -2,402,000 -2,402,000 -2,402,000 -2,402,000 -2,402,000 -2,402,000 -2,402,000 -2,402,000 -2,402,000 -2,402,000 -2,402,000 -2,402,000 -2,402,000 -2,402,000 -2,402,000 -2,402,000 -2,402,000 -2,402,000 -2,402,000 -2,402,000  
      original issuance costs of redeemed preferred stock and preferred units
                                      -3,744,000  -3,845,000                  -2,062,000                            
      total preferred dividends
                                      -4,552,000 -1,615,000 -7,196,000                                              
      dividends declared per common share
                                 0.334 0.455 0.455 0.425 0.306 0.425 0.425 0.375 0.275 0.375 0.375 0.35 0.263 0.35 0.35 0.35 0.263 0.35 0.35 0.35 0.263 0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.58 580 580 580 580 555 555 555 555 530 530 530 530  
      acquisition-related expenses
                                         938,000 188,000 714,000 62,000 100,000 4,000 265,000 128,000 211,000 431,000 609,000 228,000 575,000 568,000 164,000 655,000 1,040,000 556,000 1,813,000 1,528,000 1,224,000 1,163,000 1,194,000 472,000 624,000 354,000 957,000 313,000                  
      interest income and other net investment gains
                                     1,874,000 1,526,000 1,038,000 1,065,000 644,000 538,000 311,000 271,000    360,000 -26,000 -9,000 419,000 177,000 551,000 673,000 19,000 392,000 145,000 330,000 -110,000 484,000 299,000 30,000 58,000 184,000 175,750 337,000 -18,000 384,000 268,500 501,000 503,000 70,000              
      income from operations before gains (loss) on sales of real estate
                                     27,029,750 37,789,000 35,306,000                                               
      net loss on sale of land
                                                                                      
      net gain on sales of land
                                           -295,000                                           
      net income attributable to noncontrolling interest in consolidated subsidiary
                                           -216,000 -195,000                                          
      gains on sale of land
                                                                                      
      gains on sale of depreciable operating properties
                                            145,990,000                                          
      total income attributable to noncontrolling interest
                                            -3,805,000                                          
      income from continuing operations before gains on sales of real estate
                                             29,460,000 28,182,000                                        
      gain on sale of land
                                             4,317,000   17,268,000   3,490,000                                   
      income from continuing operations
                                             29,308,000 106,704,000 58,590,000 44,002,000 19,417,000 13,168,000 16,454,000 11,440,000 5,548,000 2,683,000 9,680,000 2,388,000 3,912,000 -665,000 2,277,000 4,962,000 -3,962,000 1,427,000   4,435,000 3,669,000 1,956,000 8,877,000 671,000 12,230,000 10,993,000  8,166,000 15,578,000 7,577,000 12,266,000 7,509,000 11,369,000 10,941,000 10,741,000 11,071,000 10,722,000 20,377,000 10,652,000  
      discontinued operations
                                                                                      
      income from discontinued operations
                                                 482,000 548,000  377,000 5,670,000 6,344,000   3,282,000 3,187,000  900,000                          
      gains on dispositions of discontinued operations
                                                 27,597,750 5,587,000 14,689,000                                   
      total income from discontinued operations
                                                 12,013,000 6,135,000 14,689,000 90,492,000 17,499,000 6,344,000 423,000  189,718,000 3,187,000  73,709,000 48,822,000 12,863,000         2,350,000  128,000  406,000  60,506,000 61,000 4,551,000 8,139,000 514,000 23,254,000  5,279,000  
      income from continuing operations available to common stockholders per common share – basic
                                             545 1,100 610 450 85 110 150 90                                  
      income from continuing operations available to common stockholders per common share – diluted
                                             542.5 1,090 610 450 82.5 110 150 90                                  
      income from continuing operations before gains on sale of real estate
                                               27,162,000 26,734,000                                      
      income from continuing operations before gain on sale of land
                                                 19,417,000 13,168,000 12,964,000                                   
      other (expenses) income:
                                                                                      
      net gain on dispositions of discontinued operations
                                                    90,115,000 11,829,000  423,000  186,436,000   72,809,000 39,032,000 12,555,000         2,485,000    234,000  61,031,000  4,848,000 8,626,000  25,603,000  5,655,000  
      preferred distributions and dividends:
                                                                                      
      distributions to noncontrolling cumulative redeemable preferred units of the operating partnership
                                                          -747,000 -1,397,000 -1,397,000 -1,397,000 -1,397,000 -1,397,000 -1,397,000 -1,397,000 -1,397,000 -1,397,000 -1,397,000 -1,397,000 -1,397,000 -1,397,000 -1,397,000              
      original issuance costs of redeemed preferred stock
                                                                                      
      total preferred distributions and dividends
                                                     -3,312,000 -3,312,000 -3,313,000 -3,313,000 -3,313,000 -5,342,000 -3,097,000 -9,336,000 -3,799,000 -3,799,000 -3,799,000 -3,799,000 -2,849,250 -3,799,000 -3,799,000 -3,799,000 -2,849,250 -3,799,000 -3,799,000               
      loss from continuing operations available to common stockholders per common share - basic
                                                     -2.5 -10  -20 -62.5 -80 -20 -70                          
      loss from continuing operations available to common stockholders per common share - diluted
                                                     -2.5 -10  -20 -62.5 -80 -20 -70                          
      net income available to common stockholders per share - basic
                                                     0.033 0.07 0.08 -0.02 0.23 -0.04 -0.02 1.06 0.045 0.17                        
      net income available to common stockholders per share - diluted
                                                     0.033 0.07 0.08 -0.02 0.23 -0.04 -0.02 1.06 0.045 0.17                        
      weighted-average common shares outstanding - basic
                                                      76,768,893 75,486,380 74,977,240  71,889,475 68,344,734 63,648,704  58,355,127                        
      weighted-average common shares outstanding - diluted
                                                      76,768,893 77,453,689 74,977,240  71,889,475 68,344,734 63,648,704  58,355,127                        
      income from continuing operations available to common stockholders per common share - basic
                                                       80      -15 -50                        
      income from continuing operations available to common stockholders per common share - diluted
                                                       80      -15 -50                        
      original issuance costs of preferred stock called for redemption
                                                            -4,918,000                          
      loss on early extinguishment of debt
                                                                   -4,564,000                   
      net income from discontinued operations
                                                             263,250 308,000                        
      net income available to common stockholders per share-basic
                                                               -0.01 0.01 0.01 -0.01                    
      net income available to common stockholders per share-diluted
                                                               -0.01 0.01 0.01 -0.01                    
      weighted-average common shares outstanding-basic
                                                               57,685,710 52,302,075  52,274,316                    
      weighted-average common shares outstanding-diluted
                                                               57,685,710 52,572,956  52,274,316                    
      gain on early extinguishment of debt
                                                                     1,790,000 3,119,000                
      loss from discontinued operations
                                                                                      
      net gain on discontinued operations
                                                                                      
      income from continuing operations available to common stockholders per common share-basic
                                                                 10 -10                    
      income from continuing operations available to common stockholders per common share-diluted
                                                                 10 -10                    
      income from continuing operations available to common stockholders per common share—basic
                                                                   -40 110 -110 170 190               
      income from continuing operations available to common stockholders per common share—diluted
                                                                   -40 110 -110 170 190               
      net income available to common stockholders per share—basic
                                                                   -0.04 0.11 -0.11 0.17 0.25 0.23              
      net income available to common stockholders per share—diluted
                                                                   -0.04 0.11 -0.11 0.17 0.25 0.23              
      weighted-average common shares outstanding—basic
                                                             56,717,121    49,497,487  50,296,643 43,012,100 38,705,101 42,934,796 35,964,762 32,827,119              
      weighted-average common shares outstanding—diluted
                                                             56,717,121    49,513,195  50,296,643 43,014,532 38,732,126 42,935,475 35,964,783 32,879,438              
      other income:
                                                                                      
      revenues from discontinued operations
                                                                           199,000  9,932,000 282,000  98,000 1,551,000 6,000  386,000  
      expenses from discontinued operations
                                                                       -135,000      -6,285,000 -217,000  -20,000 -1,143,000 -444,000  -214,000  
      net income attributable to the company
                                                                       12,916,000 11,376,000              
      preferred dividends and distributions:
                                                                                      
      total preferred dividends and distributions
                                                                        -3,799,000              
      interest and other investment income
                                                                         -285,000 -149,000 184,000 157,000 311,000 305,000        
      income from continuing operations before minority interests
                                                                         9,829,000 17,845,000 9,322,000 14,327,000 9,228,000 13,386,000 12,947,000 12,716,000 13,089,000 12,720,000 23,331,000 12,906,000  
      minority interests:
                                                                                      
      distributions on cumulative redeemable preferred units
                                                                         -1,397,000 -1,397,000 -1,397,000 -1,397,000 -1,397,000 -1,397,000 -1,397,000 -1,397,000 -1,397,000 -1,397,000 -1,397,000 -1,397,000  
      minority interest in earnings of operating partnership attributable to continuing operations
                                                                         -266,000 -870,000 -348,000 -664,000 -451,750 -620,000 -609,000 -578,000    -857,000  
      total minority interests
                                                                         -1,663,000 -2,267,000 -1,745,000 -2,061,000 -1,719,000 -2,017,000 -2,006,000 -1,975,000 -2,018,000 -1,998,000 -2,954,000 -2,254,000  
      minority interest in earnings of operating partnership attributable to discontinued operations
                                                                         -7,000  -27,000  -4,172,000 -4,000 -297,000 -565,000 106,000 -1,911,000  -548,000  
      net income available for common stockholders
                                                                         5,892,000 13,176,000 5,581,000 9,864,000 65,613,000 9,028,000 13,090,000 16,478,000 9,183,000 31,574,000 17,975,000 13,529,000  
      income from continuing operations per common share—basic
                                                                         180 410 160 300 160 280 260 260 270 260 580 280  
      income from continuing operations per common share—diluted
                                                                         170 400 160 300 150 280 260 260 260 260 580 280  
      net income per common share—basic
                                                                         180 410 170 300 2,030 280 400 510 270 980 580 460  
      net income per common share—diluted
                                                                         180 400 170 300 2,010 280 400 510 270 980 580 460  
      weighted-average shares outstanding—basic
                                                                         32,466,591,000 32,338,796,000 32,351,044,000 32,456,614,000 32,379,997,000 32,373,228,000 32,371,183,000 32,348,690,000 31,244,062,000 32,199,885,000 31,048,657,000 29,440,090,000  
      weighted-average shares outstanding—diluted
                                                                         32,669,997,000 32,534,772,000 32,509,817,000 32,554,927,000 32,526,723,000 32,501,719,000 32,486,171,000 32,484,954,000 31,389,999,000 32,323,675,000 31,171,756,000 29,607,666,000  
      other income and expense:
                                                                                      
      net settlement receipts on interest rate swaps
                                                                                 186,750 299,000    
      loss on derivative instruments
                                                                                      
      total other income and expense
                                                                             311,000 305,000        
      gain on derivative instruments
                                                                                 -238,000 -324,000 -179,000 -76,000  
      minority interest in (earnings) loss of operating partnership attributable to continuing operations
                                                                                 -621,000 -601,000 -1,557,000   
      net settlement receipts (payments) on interest rate swaps
                                                                                   254,000 194,000  
      minority interest in loss (earnings) of operating partnership attributable to discontinued operations
                                                                                      
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2026-03-31 2025-12-31 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 2015-06-30 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 
                                                                                        
        assets
                                                                                        
        real estate assets:
                                                                                        
        land
      1,730,514,000 1,641,913,000                                                                                 
        buildings and improvements
      9,011,023,000 8,505,486,000 8,658,236,000 8,427,405,000 8,617,728,000 8,598,751,000 8,573,332,000 8,501,976,000 8,479,359,000 8,463,674,000 8,431,499,000 8,353,596,000 8,335,285,000 8,302,081,000 7,693,247,000 7,530,547,000 7,509,311,000 7,543,585,000 7,282,341,000 6,682,208,000 6,480,857,000 6,783,092,000 6,535,637,000 6,289,816,000 5,997,523,000 5,866,477,000 5,770,226,000 5,712,448,000 5,300,313,000 5,207,984,000 5,056,050,000 5,017,999,000 4,987,617,000 4,908,797,000 4,871,667,000 4,983,638,000 4,962,732,000 4,938,250,000 4,669,442,000 4,639,003,000 4,501,062,000 4,091,012,000 4,028,044,000 3,906,860,000 3,880,883,000 4,059,639,000 3,882,015,000 3,720,863,000 3,706,662,000 3,590,699,000 3,527,729,000 3,652,102,000 3,631,057,000 3,335,026,000 3,169,224,000 3,137,665,000 2,970,967,000 2,830,310,000 2,881,504,000 2,820,766,000 2,470,989,000 2,435,173,000 2,245,618,000 2,247,549,000 1,950,408,000 1,920,543,000 1,909,876,000 1,901,647,000 1,896,972,000 1,888,274,000 1,861,769,000 1,739,874,000 1,733,794,000 1,719,700,000 1,730,833,000 1,500,777,000 1,494,184,000 1,484,051,000 1,472,438,000 1,481,215,000 1,490,006,000 1,494,958,000 
        undeveloped land and construction in progress
      1,585,042,000 2,387,742,000 2,355,181,000 2,364,938,000 2,356,330,000 2,309,624,000 2,254,628,000 2,207,180,000 2,114,242,000 2,034,804,000 1,950,424,000 1,894,545,000 1,788,542,000 1,691,860,000 2,183,071,000 2,272,508,000 2,158,279,000 2,017,126,000 2,237,742,000 2,318,215,000 1,771,762,000 1,778,106,000 1,938,923,000 2,109,196,000 2,318,236,000 2,296,130,000 1,892,169,000 1,827,528,000 2,131,358,000 2,058,510,000 2,146,430,000 1,993,314,000 1,530,949,000 1,432,808,000 1,292,017,000 1,183,618,000 1,087,678,000 1,013,533,000 945,805,000 894,057,000 1,018,738,000 1,361,340,000 1,475,718,000 1,363,252,000 1,265,659,000 1,120,660,000 1,112,046,000 1,270,675,000 1,047,371,000 1,016,757,000 907,959,000 808,934,000 747,679,000 809,654,000 668,058,000 557,657,000 446,237,000 430,806,000 328,785,000 303,998,000 296,245,000 290,365,000 286,522,000 271,268,000 267,211,000 263,608,000 259,108,000 255,235,000 251,581,000 246,865,000 257,135,000 365,106,000 347,699,000 324,077,000 250,028,000 453,211,000 378,112,000 263,651,000 218,162,000 189,558,000 153,177,000 137,025,000 
        total real estate assets held for investment
      12,326,579,000 12,535,141,000 12,675,096,000 12,420,097,000 12,724,878,000 12,659,195,000 12,578,780,000 12,452,326,000 12,336,771,000 12,241,648,000 12,125,093,000 11,986,383,000 11,862,069,000 11,732,183,000 11,619,512,000 11,516,207,000 11,382,782,000 11,292,693,000 11,222,506,000 10,552,076,000 9,792,161,000 10,190,046,000 10,086,784,000 9,945,221,000 9,822,116,000 9,628,773,000 8,977,843,000 8,824,558,000 8,616,167,000 8,426,632,000 8,329,580,000 8,138,413,000 7,645,666,000 7,417,777,000 7,239,856,000 7,276,227,000 7,159,381,000 7,060,754,000 6,632,838,000 6,553,347,000 6,498,443,000  6,354,042,000 6,109,184,000 5,985,469,000  5,751,097,000 5,667,027,000 4,579,047,000  4,266,951,000 4,280,949,000 4,225,712,000  3,673,625,000 3,470,672,000 3,222,949,000                          
        accumulated depreciation and amortization
      -2,857,265,000 -2,843,811,000 -2,952,576,000 -2,877,165,000 -2,900,113,000 -2,824,616,000 -2,747,494,000 -2,671,141,000 -2,594,996,000 -2,518,304,000 -2,443,659,000 -2,369,515,000 -2,294,202,000 -2,218,710,000 -2,150,060,000 -2,104,990,000 -2,034,193,000 -2,003,656,000 -1,962,730,000 -1,900,740,000 -1,838,338,000 -1,798,646,000 -1,744,325,000 -1,684,837,000 -1,622,369,000 -1,561,361,000 -1,505,785,000 -1,480,766,000 -1,441,506,000 -1,391,368,000 -1,411,529,000 -1,361,811,000 -1,312,612,000 -1,264,162,000 -1,216,358,000 -1,234,079,000 -1,186,246,000 -1,139,853,000 -1,095,562,000 -1,054,828,000 -1,034,315,000 -994,241,000 -999,557,000 -960,816,000 -921,279,000 -947,664,000 -912,623,000 -885,580,000 -854,977,000 -818,957,000 -781,580,000 -815,961,000 -790,878,000 -756,515,000 -725,728,000 -801,083,000 -770,688,000 -742,503,000 -732,162,000 -720,864,000 -695,548,000 -672,429,000 -652,675,000 -644,246,000 -623,981,000 -605,976,000 -587,968,000 -568,877,000 -550,868,000 -532,769,000 -514,712,000 -497,697,000 -480,642,000 -463,932,000 -488,050,000 -472,302,000 -457,982,000 -443,807,000 -436,940,000 -425,708,000 -428,624,000 -416,597,000 
        real estate and other assets held for sale
      188,771,000 115,155,000  255,795,000                                                                               
        cash and cash equivalents
      192,904,000 179,316,000 372,416,000 193,129,000 146,711,000 165,690,000 625,395,000 835,893,000 855,007,000 510,163,000 618,794,000 361,885,000 476,358,000 347,379,000 249,981,000 210,044,000 331,685,000 414,077,000 348,417,000 519,307,000 657,819,000 731,991,000 849,009,000 605,012,000 762,134,000 60,044,000 297,620,000 52,415,000 49,693,000 51,604,000 86,517,000 50,817,000 53,069,000 57,649,000 64,954,000 387,616,000 478,391,000 193,418,000 250,523,000 26,332,000 38,645,000 56,508,000 567,940,000 28,142,000 50,181,000 23,781,000 200,431,000 24,571,000 95,534,000 35,377,000 197,150,000 107,823,000 135,676,000 16,700,000 16,113,000 18,111,000 374,368,000 4,777,000 15,481,000 25,412,000 6,708,000 14,840,000 8,313,000 29,428,000 10,736,000 9,883,000 9,265,000 13,348,000 16,256,000 9,553,000 10,055,000 4,367,000 4,881,000 11,732,000 3,655,000 11,134,000 5,167,000 11,948,000 7,750,000 8,583,000 11,395,000 3,881,000 
        marketable securities
      31,417,000 30,807,000 33,569,000 31,629,000 29,187,000 27,965,000 27,144,000 32,648,000 109,513,000 284,670,000 278,789,000 25,786,000 23,288,000 23,547,000 22,390,000 22,988,000 25,829,000 27,475,000 27,285,000 25,885,000 24,089,000 27,481,000 25,073,000 23,175,000 19,984,000 27,098,000 26,188,000 25,203,000 24,098,000 21,779,000 23,353,000 22,519,000 21,572,000 20,674,000 18,851,000 16,010,000 15,163,000 14,773,000 14,121,000 13,388,000 13,418,000 12,882,000 12,638,000 13,803,000 13,337,000 11,971,000 12,076,000 11,747,000 11,001,000 10,008,000 9,192,000 8,286,000 8,029,000 7,435,000 6,812,000 6,546,000 6,459,000 5,691,000 5,213,000 5,654,000 5,425,000 4,902,000 4,481,000 4,087,000 4,226,000 3,452,000 3,229,000 2,801,000 2,392,000 1,888,000 2,243,000 2,406,000 2,238,000 707,000 455,000        
        current receivables
      15,712,000 12,765,000 13,191,000 11,718,000 11,680,000 11,033,000 11,218,000 10,229,000 13,291,000 13,609,000 11,383,000 10,686,000 15,926,000 20,583,000 15,885,000 13,268,000 12,107,000 14,386,000 11,646,000 9,773,000 12,855,000 12,007,000 16,083,000 20,925,000 16,534,000 26,489,000 34,116,000 27,563,000 28,016,000 20,176,000 17,519,000 15,144,000 17,602,000 16,926,000 18,626,000 13,703,000 13,740,000 13,460,000 9,709,000 10,112,000 9,540,000 11,153,000 11,533,000 8,956,000 8,122,000 7,229,000 6,443,000 10,588,000 11,092,000 10,743,000 11,769,000 10,515,000 10,666,000 9,220,000 7,113,000 7,643,000 6,990,000 8,395,000 6,860,000 4,732,000 4,816,000 6,258,000 4,055,000 3,739,000 2,913,000 3,236,000 3,139,000 2,945,000 3,915,000 5,753,000 4,658,000 3,843,000 4,724,000 4,891,000 4,231,000 4,715,000 7,096,000 5,890,000 3,168,000 3,951,000 6,396,000 5,759,000 
        deferred rent receivables
      425,420,000 424,794,000 436,886,000 436,964,000 447,433,000 451,996,000 455,613,000 458,177,000 457,494,000 460,979,000 466,073,000 463,640,000 457,870,000 452,200,000 442,987,000 435,549,000 420,895,000 405,665,000 394,297,000 384,475,000 370,470,000 386,658,000 375,939,000 358,914,000 352,352,000 337,937,000 314,812,000 297,358,000 280,756,000 267,007,000 261,003,000 256,558,000 251,744,000 246,391,000 238,959,000 233,427,000 225,860,000 218,977,000 212,204,000 207,851,000 199,232,000 189,704,000 183,352,000 176,493,000 168,581,000 156,416,000 139,910,000 134,269,000 130,750,000 127,123,000 121,659,000 124,815,000 122,142,000 115,418,000 110,128,000 110,689,000 106,309,000 101,142,000 103,668,000 97,958,000 93,392,000 89,052,000 83,563,000 79,813,000 76,406,000 74,392,000 72,623,000 71,355,000 68,693,000 67,144,000 64,444,000 66,554,000 68,423,000 67,283,000 66,073,000 62,515,000 62,201,000 61,929,000 60,535,000 58,579,000 57,692,000 55,048,000 
        deferred leasing costs and acquisition-related intangible assets
      271,213,000 278,232,000 229,175,000 208,266,000 220,051,000 225,937,000 226,991,000 220,485,000 226,506,000 229,705,000 228,742,000 230,559,000 238,184,000 250,846,000 214,484,000 217,026,000 228,426,000 234,458,000 229,334,000 184,510,000 190,721,000 210,949,000 208,306,000 209,637,000 204,392,000 212,805,000 202,063,000 203,451,000 187,309,000 197,574,000 183,118,000 186,649,000 181,567,000 183,728,000 185,420,000 195,320,000 202,499,000 208,368,000 180,613,000 186,903,000 186,271,000 176,683,000 173,457,000 174,387,000 182,251,000 201,926,000 183,057,000 178,841,000 188,466,000 186,622,000 190,085,000 188,702,000 196,525,000  187,307,000 168,488,000 158,132,000  155,757,000 153,231,000 129,578,000 131,066,000 96,691,000 98,466,000                   
        right of use ground lease assets
      127,834,000 128,116,000 128,396,000 128,674,000 128,949,000 129,222,000 129,492,000 129,760,000 130,026,000 125,506,000 125,765,000 126,022,000 126,277,000 126,530,000 126,708,000 126,587,000 126,946,000 127,302,000 127,657,000 141,529,000 95,312,000 95,523,000 95,733,000 95,940,000 96,145,000 96,348,000 83,200,000 82,647,000 82,794,000                                                      
        prepaid expenses and other assets
      52,273,000 54,561,000 56,046,000 58,725,000 69,909,000 51,935,000 73,495,000 75,379,000 65,588,000 53,069,000 60,141,000 75,588,000 63,622,000 62,429,000 65,096,000 65,554,000 57,338,000 57,991,000 60,063,000 67,494,000 50,505,000 53,560,000 55,706,000 68,378,000 67,559,000 55,661,000 109,707,000 55,992,000 50,360,000 52,873,000 72,675,000 76,495,000 107,324,000 114,706,000 108,715,000 98,894,000 77,678,000 70,608,000 60,752,000 58,913,000 31,276,000 22,644,000 23,148,000 31,291,000 22,434,000 20,375,000 20,398,000 21,829,000 21,469,000 15,783,000 17,319,000 16,076,000 16,571,000 9,949,000 24,398,000 46,357,000 21,934,000 12,199,000 19,531,000 25,559,000 13,724,000 8,097,000 8,988,000 7,447,000 10,745,000 6,307,000 6,126,000 6,799,000 8,734,000 4,835,000 6,124,000 7,210,000 7,783,000 5,057,000 6,331,000 6,840,000 7,670,000 8,616,000 8,807,000 9,533,000 7,518,000 5,166,000 
        total assets
      10,774,858,000 10,915,076,000 10,992,199,000 10,867,832,000 10,878,685,000 10,898,357,000 11,380,634,000 11,543,756,000 11,599,200,000 11,401,045,000 11,471,121,000 10,911,034,000 10,969,392,000 10,796,987,000 10,619,992,000 10,515,241,000 10,564,822,000 10,583,397,000 10,471,517,000 10,434,766,000 10,384,353,000 10,000,708,000 9,984,608,000 9,658,665,000 9,735,147,000 8,900,094,000 8,623,815,000 8,094,721,000 7,883,987,000 7,765,707,000 7,562,236,000 7,384,784,000 6,965,932,000 6,802,838,000 6,838,299,000 6,995,367,000 6,993,665,000 6,706,633,000 6,332,139,000 6,298,433,000 6,204,110,000 5,939,469,000 6,353,392,000 5,686,925,000 5,725,480,000 5,633,736,000 5,487,464,000 5,273,792,000 5,114,543,000 5,111,028,000 5,089,276,000 4,775,522,000 4,755,287,000 4,616,084,000 4,215,841,000 3,847,522,000 3,959,341,000 3,446,795,000 3,367,684,000 3,264,787,000 2,841,933,000 2,816,565,000 2,535,684,000 2,556,509,000 2,112,242,000 2,084,281,000 2,079,002,000 2,087,582,000 2,103,498,000 2,099,583,000 2,099,498,000 2,087,725,000 2,085,909,000 2,068,720,000 1,963,750,000 1,927,685,000 1,854,715,000 1,799,352,000 1,759,799,000 1,713,762,000 1,684,309,000 1,674,474,000 
        liabilities and equity
                                                                                        
        liabilities:
                                                                                        
        secured debt
      591,398,000 592,685,000 593,956,000 595,212,000 596,806,000 598,199,000 599,478,000 600,741,000 601,990,000 603,225,000 604,480,000 240,142,000 241,547,000 242,938,000 244,316,000 245,680,000 247,030,000 248,367,000 249,690,000 251,000,000 252,298,000 253,582,000 254,854,000 256,113,000 257,359,000 258,593,000 259,027,000 259,455,000 259,878,000 335,531,000 336,866,000 338,189,000 339,501,000 340,800,000 465,828,000 467,758,000 469,670,000 472,772,000 370,666,000 373,500,000 378,080,000 381,918,000 475,923,000 479,368,000 516,725,000 546,292,000 549,896,000 553,427,000 556,946,000 560,434,000 563,898,000 569,042,000 570,676,000 561,096,000 520,867,000 381,097,000 350,219,000 351,825,000 473,997,000 475,820,000 446,539,000 313,009,000 315,150,000 316,570,000 267,014,000 294,574,000 296,788,000 300,944,000 312,886,000 316,456,000 317,878,000 392,511,000 394,983,000 395,912,000 398,283,000 400,617,000 455,230,000 459,198,000 463,005,000 465,562,000 468,078,000 473,282,000 
        unsecured debt
      3,997,993,000 3,996,774,000 3,995,555,000 4,002,507,000 4,001,036,000 3,999,566,000 4,401,678,000 4,519,796,000 4,518,297,000 4,325,153,000 4,330,326,000 4,172,833,000 4,171,029,000 4,020,058,000 3,823,532,000 3,822,482,000 3,821,433,000 3,820,383,000 3,673,183,000 3,672,152,000 3,671,094,000 3,670,099,000 3,668,976,000 3,399,105,000 3,050,103,000 3,049,185,000 3,048,209,000 2,553,651,000 2,552,883,000 2,552,070,000 2,207,049,000 2,156,521,000 2,155,794,000 2,006,263,000 1,909,381,000 2,097,083,000 2,096,356,000 1,847,351,000 1,846,672,000 1,845,992,000 1,845,313,000 1,856,590,000 2,181,382,000 1,783,438,000 1,783,280,000 1,783,121,000 1,743,962,000 1,431,301,000 1,431,217,000 1,431,132,000 1,431,048,000 1,430,964,000 1,430,880,000 1,130,895,000 1,130,814,000 1,130,732,000 1,130,651,000                          
        accounts payable, accrued expenses, and other liabilities
      303,808,000 288,963,000 321,188,000 273,600,000 292,354,000  354,785,000 361,759,000                                                                           
        ground lease liabilities
      127,414,000 127,628,000 127,830,000 128,030,000 128,227,000 128,422,000 128,606,000 128,787,000 128,966,000 124,353,000 124,517,000 124,678,000 124,837,000 124,994,000 125,065,000 125,277,000 125,414,000 125,550,000 125,676,000 143,885,000 97,617,000 97,778,000 97,936,000 98,093,000 98,247,000 98,400,000 87,617,000 87,082,000 87,247,000                                                      
        accrued dividends and distributions
      63,421,000 65,009,000 64,996,000 64,985,000 64,990,000 64,850,000 64,844,000 65,118,000 65,111,000 64,440,000 64,423,000 64,438,000 64,461,000 64,285,000 64,271,000 61,880,000 61,951,000 61,850,000 61,845,000 59,455,000 59,472,000 59,431,000 59,416,000 57,600,000 57,620,000 53,219,000 53,205,000 50,800,000 47,676,000 47,559,000 47,411,000 47,348,000 43,512,000 43,448,000 43,324,000 44,105,000 38,983,000 222,306,000 37,749,000 37,733,000 35,317,000 34,992,000                                         
        deferred revenue and acquisition-related intangible liabilities
      122,272,000 125,628,000 127,931,000 131,606,000 137,538,000 142,437,000 151,670,000 160,284,000 166,436,000 173,638,000 178,542,000 185,429,000 195,629,000 195,959,000 176,105,000 176,845,000 171,121,000 171,151,000 160,687,000 122,902,000 123,794,000 128,523,000 131,558,000 129,264,000 130,843,000 139,488,000 134,828,000 136,266,000 138,973,000 149,646,000 149,059,000 146,741,000 149,563,000 145,890,000 145,556,000 148,729,000 153,369,000 150,360,000 134,436,000 138,394,000 131,296,000 128,156,000 127,473,000 123,819,000 128,730,000 132,239,000 114,504,000 114,670,000 107,569,000 101,286,000 102,991,000 117,301,000 118,118,000 117,904,000 120,407,000 108,462,000 90,206,000 79,781,000 95,120,000 90,149,000 78,992,000 79,322,000 68,251,000 71,651,000                   
        rents received in advance and tenant security deposits
      79,638,000 75,701,000 74,888,000 73,561,000 77,749,000 71,003,000 71,033,000 73,013,000 73,777,000 79,364,000 74,646,000 78,187,000 80,565,000 81,432,000 82,839,000 73,273,000 80,192,000 74,962,000 68,441,000 62,739,000 68,634,000 68,874,000 61,483,000 63,523,000 65,913,000 66,503,000 57,428,000 59,997,000 55,457,000 60,225,000 56,258,000 58,604,000 56,117,000 56,484,000 46,925,000 55,738,000 53,677,000 52,080,000 48,518,000 44,663,000 48,543,000 49,361,000 46,579,000 47,434,000 46,887,000 49,363,000 45,086,000 43,085,000 43,952,000 44,240,000 41,668,000 39,660,000 37,251,000 37,654,000 31,728,000 31,768,000 30,392,000 26,917,000 29,369,000 28,117,000 26,433,000 29,189,000 23,776,000 25,849,000 23,654,000 18,230,000 18,381,000 22,038,000 19,146,000 19,340,000 18,785,000 20,386,000 20,699,000 18,433,000 17,862,000 17,521,000 19,256,000 19,900,000     
        liabilities related to real estate assets held for sale
       4,945,000  4,887,000                                                                               
        total liabilities
      5,285,944,000 5,277,333,000 5,306,344,000 5,274,388,000 5,298,700,000 5,289,488,000 5,772,094,000 5,909,498,000 5,956,469,000 5,741,352,000 5,803,596,000 5,243,440,000 5,296,970,000 5,122,026,000 4,940,215,000 4,862,690,000 4,899,061,000 4,893,527,000 4,780,879,000 4,741,301,000 4,681,461,000 4,723,387,000 4,732,644,000 4,405,076,000 4,457,632,000 4,329,236,000 4,084,306,000 3,907,818,000 3,700,805,000 3,564,446,000 3,487,317,000 3,320,911,000 3,018,460,000 2,842,522,000 2,942,419,000 3,032,896,000 3,027,524,000 2,947,316,000 2,690,237,000 2,871,799,000 2,779,412,000 2,704,883,000 3,116,330,000 2,773,820,000 2,866,274,000 2,909,800,000 2,867,095,000 2,650,452,000 2,528,933,000 2,594,868,000 2,565,182,000 2,537,143,000 2,522,747,000 2,380,151,000 2,154,473,000 2,040,818,000 2,155,853,000 2,045,675,000 1,999,703,000 1,887,616,000 1,665,772,000 1,625,197,000 1,328,610,000 1,330,805,000 1,164,572,000 1,126,805,000 1,112,466,000 1,115,941,000 1,320,346,000 1,341,512,000 1,329,815,000 1,314,183,000 1,296,334,000 1,263,481,000 1,212,609,000 1,169,901,000 1,090,539,000 1,011,790,000 964,307,000 934,672,000 1,043,977,000 1,031,106,000 
        commitments and contingencies
                                                                                        
        equity:
                                                                                        
        stockholders’ equity:
                                                                                        
        common stock, .01 par value...
      1,163,000 1,184,000 1,183,000 1,183,000 1,183,000 1,181,000 1,181,000 1,174,000 1,174,000 1,173,000 1,173,000 1,172,000 1,171,000 1,169,000 1,169,000 1,169,000 1,167,000 1,165,000 1,165,000 1,165,000 1,165,000 1,160,000 1,152,000 1,152,000 1,151,000 1,060,000 1,060,000 1,010,000 1,010,000 1,007,000 1,007,000 1,006,000 988,000 986,000 984,000 984,000 983,000 932,000 923,000 923,000 922,000 923,000 922,000 884,000 880,000 863,000 834,000 829,000 822,000 822,000 821,000 757,000 753,000 749,000 747,000 689,000 683,000 588,000 585,000 585,000 524,000 523,000 523,000 523,000 431,000 431,000 431,000 431,000 331,000 331,000 331,000 327,000 327,000 328,000 327,000 327,000 327,000 324,000 324,000 321,000 298,000 289,000 
        additional paid-in capital
      5,161,140,000 5,230,747,000 5,223,369,000 5,216,320,000 5,210,415,000 5,209,653,000 5,203,195,000 5,216,699,000 5,208,753,000 5,205,839,000 5,195,106,000 5,184,227,000 5,175,402,000 5,170,760,000 5,162,088,000 5,151,705,000 5,149,968,000 5,155,232,000 5,146,049,000 5,134,320,000 5,122,584,000 5,131,916,000 5,089,926,000 5,084,362,000 5,067,181,000 4,350,917,000 4,342,296,000 3,984,867,000 3,976,204,000 3,976,953,000 3,965,405,000 3,951,289,000 3,816,385,000 3,822,492,000 3,797,546,000 3,792,028,000 3,782,291,000 3,457,649,000 3,191,718,000 3,074,508,000 3,066,994,000 3,047,894,000 3,042,330,000 2,791,226,000 2,761,176,000 2,635,900,000 2,530,282,000 2,519,268,000 2,479,740,000 2,478,975,000 2,476,424,000 2,170,667,000 2,149,052,000 2,126,005,000 2,114,774,000 1,856,431,000 1,827,676,000 1,448,997,000 1,435,580,000 1,433,951,000 1,214,463,000 1,211,498,000 1,209,673,000 1,208,716,000 914,766,000 913,657,000 904,043,000 901,747,000 707,421,000 663,471,000 661,019,000 651,386,000 653,101,000 658,894,000 654,569,000 651,659,000 652,580,000 671,484,000 670,715,000 664,860,000 531,852,000 523,609,000 
        retained earnings
      102,859,000 188,876,000 240,810,000 148,952,000 144,867,000 171,212,000 175,962,000 187,796,000 203,080,000 221,149,000 237,665,000 248,695,000 257,079,000 265,118,000 276,138,000 260,020,000 274,193,000 283,663,000 297,250,000 311,458,000 334,496,000                                                              
        total stockholders’ equity
      5,265,162,000 5,420,807,000 5,465,362,000 5,366,455,000 5,356,465,000 5,382,046,000 5,380,338,000 5,405,669,000 5,413,007,000 5,428,161,000 5,433,944,000 5,434,094,000 5,433,652,000 5,437,047,000 5,439,395,000 5,412,894,000 5,425,328,000 5,440,060,000 5,444,464,000 5,446,943,000 5,458,245,000 5,029,943,000 4,968,142,000 4,972,291,000 4,992,150,000 4,293,510,000 4,264,649,000 3,915,532,000 3,914,524,000 3,929,907,000 3,804,758,000 3,802,927,000 3,686,859,000 3,700,793,000 3,689,863,000 3,756,469,000 3,759,323,000 3,542,995,000 3,463,159,000 3,330,489,000 3,328,308,000 3,170,966,000 3,172,813,000 2,852,952,000 2,800,112,000 2,666,210,000 2,563,728,000 2,566,657,000 2,529,337,000 2,461,312,000 2,468,608,000   2,189,630,000    1,293,717,000  1,270,202,000 1,071,721,000 1,086,351,000 1,101,563,000 1,119,266,000 845,589,000 854,948,000 863,665,000 868,577,000 680,352,000 656,065,000 666,920,000 663,296,000 678,374,000 693,292,000 641,535,000 647,748,000 653,726,000 674,296,000 681,516,000 661,253,000 527,257,000 519,268,000 
        noncontrolling interests:
                                                                                        
        common units of the operating partnership
      51,328,000 51,911,000 53,154,000 52,192,000 52,105,000 52,472,000 52,441,000 52,985,000 53,087,000 53,275,000 53,328,000 53,358,000 53,386,000 53,524,000 53,475,000 53,289,000 53,472,000 53,746,000 53,788,000 53,810,000 53,930,000 49,875,000 83,226,000 83,502,000 87,655,000 81,917,000 81,393,000 78,463,000 78,413,000 78,991,000 76,486,000 78,223,000 77,240,000 77,948,000 77,911,000 77,296,000 77,432,000 85,590,000 93,270,000 89,495,000 89,675,000 57,100,000 57,913,000 54,088,000 53,232,000 51,864,000 51,419,000 51,798,000 51,388,000 49,963,000 50,601,000 47,143,000 47,535,000 46,303,000 42,201,000 39,286,000 39,535,000 33,765,000 33,072,000 33,331,000 30,802,000 31,379,000 31,873,000 32,800,000 28,443,000 28,890,000 29,233,000 29,426,000 29,162,000 28,368,000 29,125,000 36,608,000 37,563,000 38,309,000 35,968,000 36,398,000 36,812,000 39,628,000     
        consolidated property partnerships
      172,424,000 165,025,000                                                                                 
        total noncontrolling interests
      223,752,000 216,936,000 220,493,000 226,989,000 223,520,000 226,823,000 228,202,000 228,589,000 229,724,000 231,532,000 233,581,000 233,500,000 238,770,000 237,914,000 240,382,000 239,657,000 240,433,000 249,810,000 246,174,000 246,522,000 244,647,000 247,378,000 283,822,000 281,298,000 285,365,000 277,348,000 274,860,000 271,371,000 268,658,000 271,354,000 270,161,000 260,946,000 260,613,000 259,523,000 206,017,000 206,002,000 206,818,000 216,322,000 178,743,000 96,145,000 96,390,000 63,620,000 64,249,000 60,153,000 59,094,000 57,726,000 56,641,000 56,683,000 56,273,000 54,848,000 55,486,000 52,028,000                               
        total equity
      5,488,914,000 5,637,743,000 5,685,855,000 5,593,444,000 5,579,985,000 5,608,869,000 5,608,540,000 5,634,258,000 5,642,731,000 5,659,693,000 5,667,525,000 5,667,594,000 5,672,422,000 5,674,961,000 5,679,777,000 5,652,551,000 5,665,761,000 5,689,870,000 5,690,638,000 5,693,465,000 5,702,892,000 5,277,321,000 5,251,964,000 5,253,589,000 5,277,515,000 4,570,858,000 4,539,509,000 4,186,903,000 4,183,182,000 4,201,261,000 4,074,919,000 4,063,873,000 3,947,472,000 3,960,316,000 3,895,880,000 3,962,471,000 3,966,141,000 3,759,317,000 3,641,902,000 3,426,634,000 3,424,698,000 3,234,586,000 3,237,062,000 2,913,105,000 2,859,206,000 2,723,936,000 2,620,369,000 2,623,340,000 2,585,610,000 2,516,160,000 2,524,094,000 2,238,379,000 2,232,540,000 2,235,933,000 2,061,368,000 1,733,066,000 1,729,850,000 1,327,482,000 1,294,343,000 1,303,533,000 1,102,523,000 1,117,730,000 1,133,436,000 1,152,066,000 874,032,000 883,838,000 892,898,000 898,003,000 709,514,000              
        total liabilities and equity
      10,774,858,000 10,915,076,000 10,992,199,000 10,867,832,000 10,878,685,000 10,898,357,000 11,380,634,000 11,543,756,000 11,599,200,000 11,401,045,000 11,471,121,000 10,911,034,000 10,969,392,000 10,796,987,000 10,619,992,000 10,515,241,000 10,564,822,000 10,583,397,000 10,471,517,000 10,434,766,000 10,384,353,000 10,000,708,000 9,984,608,000 9,658,665,000 9,735,147,000 8,900,094,000 8,623,815,000 8,094,721,000 7,883,987,000 7,765,707,000 7,562,236,000 7,384,784,000 6,965,932,000 6,802,838,000 6,838,299,000 6,995,367,000 6,993,665,000 6,706,633,000 6,332,139,000 6,298,433,000 6,204,110,000 5,939,469,000 6,353,392,000 5,686,925,000 5,725,480,000 5,633,736,000 5,487,464,000 5,273,792,000 5,114,543,000 5,111,028,000 5,089,276,000 4,775,522,000 4,755,287,000                2,103,498,000              
        real estate assets
                                                                                        
        land and improvements
        1,661,679,000 1,627,754,000 1,750,820,000 1,750,820,000 1,750,820,000 1,743,170,000 1,743,170,000 1,743,170,000 1,743,170,000 1,738,242,000 1,738,242,000 1,738,242,000 1,743,194,000 1,713,152,000 1,715,192,000 1,731,982,000 1,702,423,000 1,551,653,000 1,539,542,000 1,628,848,000 1,612,224,000 1,546,209,000 1,506,357,000 1,466,166,000 1,315,448,000 1,284,582,000 1,184,496,000 1,160,138,000 1,127,100,000 1,127,100,000 1,127,100,000 1,076,172,000 1,076,172,000 1,108,971,000 1,108,971,000 1,108,971,000 1,017,591,000 1,020,287,000 978,643,000 875,794,000 850,280,000 839,072,000 838,927,000 877,633,000 757,036,000 675,489,000 679,991,000 657,491,000 612,843,000 635,874,000 637,854,000 612,714,000 562,071,000 576,433,000 576,433,000 537,574,000 537,973,000 528,082,000 498,963,000 491,333,000 432,289,000 434,792,000 338,684,000 335,932,000 335,932,000 335,932,000 336,874,000 336,874,000 334,634,000 324,779,000 324,779,000 324,779,000 312,057,000 293,059,000 293,059,000 293,059,000 315,113,000 320,778,000 321,235,000 321,988,000 
        stockholders’ equity
                                                                                        
        noncontrolling interests
                                                                                        
        noncontrolling interests in consolidated property partnerships
        167,339,000 174,797,000 171,415,000 174,351,000 175,761,000 175,604,000 176,637,000 178,257,000 180,253,000 180,142,000 185,384,000 184,390,000 186,907,000 186,368,000 186,961,000 196,064,000 192,386,000 192,712,000 190,717,000 197,503,000 200,596,000 197,796,000 197,710,000 195,431,000 193,467,000 192,908,000 190,245,000 192,363,000 193,675,000 182,723,000 183,373,000 181,575,000 128,106,000 128,706,000 129,386,000 130,732,000 85,473,000                                            
        accounts payable, accrued expenses and other liabilities
           285,011,000   401,892,000 371,179,000 426,662,000 377,733,000 418,902,000 392,360,000 424,087,000 357,253,000 391,920,000 391,264,000 441,357,000 429,168,000 408,552,000 445,100,000 458,421,000 401,378,000 417,547,000 418,848,000 439,081,000 385,567,000 373,691,000 374,415,000 360,674,000 278,508,000 223,973,000 249,637,000 271,405,000 219,483,000 215,469,000 202,391,000 252,122,000 211,196,000 265,863,000 246,323,000 249,980,000 199,005,000 217,352,000 225,830,000 243,602,000 215,535,000 187,631,000 198,467,000 210,111,000 184,821,000 171,694,000 154,734,000 127,472,000 98,940,000 92,574,000 81,713,000 93,050,000 66,664,000 78,847,000 68,525,000 66,814,000 57,792,000 58,333,000 52,533,000 42,565,000 32,365,000 41,506,000 55,066,000 58,938,000 44,893,000 49,295,000 58,249,000 67,356,000 61,497,000 90,525,000 67,729,000 66,230,000 60,203,000 55,596,000 134,558,000 
        restricted cash
                    13,009,000 13,008,000 13,007,000 13,006,000 13,042,000 450,457,000 1,028,759,000 91,139,000 16,300,000 16,300,000 16,300,000 16,300,000 6,300,000 6,300,000 6,300,000 119,430,000    9,149,000 179,276,000 8,249,000 7,199,000 56,711,000 57,501,000 266,158,000 261,600,000 696,000 8,130,000 7,462,000 8,287,000 75,185,000 17,487,000 93,522,000 33,717,000 49,780,000 17,931,000 19,241,000 19,465,000 247,544,000 5,884,000 97,000 43,140,000 358,000 25,436,000 1,349,000 1,899,000 1,461,000 3,265,000 3,485,000 32,000 2,059,000 2,936,000 591,000 728,000 672,000 1,503,000 756,000 11,000 546,000 1,362,000 619,000  494,000 1,302,000 614,000 649,000 703,000 
        unsecured line of credit
                              380,000,000 245,000,000  375,000,000 185,000,000 45,000,000 330,000,000 295,000,000 50,000,000  60,000,000     220,000,000 75,000,000   100,000,000 130,000,000 140,000,000  90,000,000  45,000,000    185,000,000 27,000,000 102,000,000  182,000,000  245,000,000 57,000,000 159,000,000 205,000,000 150,000,000 150,000,000 97,000,000 126,000,000 94,000,000 275,000,000 252,000,000 237,000,000 159,000,000 137,000,000 111,000,000 52,000,000 18,000,000 331,000,000 276,000,000 230,000,000 202,000,000 317,500,000 225,000,000 
        distributions in excess of earnings
                           -103,133,000 -122,936,000 -113,223,000 -76,182,000 -58,467,000 -78,707,000 -70,345,000 -62,690,000 -48,053,000 -161,654,000 -149,368,000 -130,514,000 -122,685,000 -108,667,000 -132,799,000 -120,207,000 -107,997,000    -70,262,000 -62,850,000 -131,569,000 -154,355,000 -162,964,000 -159,799,000 -145,851,000 -143,636,000 -210,896,000 -201,048,000 -177,484,000 -157,211,000 -129,535,000 -288,765,000 -259,495,000 -234,199,000 -277,450,000 -296,476,000 -285,916,000 -264,848,000 -247,252,000 -230,215,000 -211,555,000 -191,190,000 -180,722,000 -162,391,000 -155,183,000 -148,982,000 -129,319,000 -116,012,000 -109,999,000 -96,636,000 -87,512,000 -134,943,000 -125,820,000 -120,763,000 -119,094,000 -111,105,000 -125,510,000 -126,475,000 -124,214,000 
        real estate assets and other assets held for sale
                                77,751,000           9,417,000 9,440,000 30,257,000  117,666,000  81,699,000 190,751,000 8,211,000 49,815,000  28,272,000 213,100,000 239,411,000    166,019,000   84,156,000                         
        liabilities and deferred revenue of real estate assets held for sale
                                4,911,000           56,000 74,000   7,543,000    56,000    14,447,000 16,751,000    4,455,000   13,286,000                         
        equity
                                                                                        
        preferred stock, .01 par value...
                                                                                        
        6.875% series g cumulative redeemable preferred stock, .01 par value...
                                           96,155,000 96,155,000 96,155,000 96,155,000 96,155,000 96,155,000 96,155,000 96,155,000 96,155,000 96,155,000 96,155,000 96,155,000 96,155,000 96,155,000 96,155,000 96,155,000 96,155,000 96,155,000 96,155,000 96,155,000                          
        6.375% series h cumulative redeemable preferred stock, .01 par value...
                                         96,256,000 96,256,000 96,256,000 96,256,000 96,256,000 96,256,000 96,256,000 96,256,000 96,256,000 96,256,000 96,256,000 96,256,000 96,256,000 96,256,000 96,256,000 96,256,000 96,256,000 96,256,000 96,256,000 96,256,000                            
        liabilities of real estate assets held for sale
                                             321,000    7,086,000 9,768,000  3,099,000  634,000                                  
        retained earnings/
                                            78,107,000 62,647,000 67,981,000                                          
        noncontrolling interest in consolidated subsidiary
                                             6,650,000 6,715,000 6,520,000 6,336,000 6,065,000 5,862,000 5,862,000 5,222,000 4,885,000 4,885,000 4,885,000 4,885,000 4,885,000                               
        total real estate held for investment
                                               6,328,146,000    6,057,932,000   5,434,024,000 5,264,947,000 5,048,531,000 5,096,910,000 5,016,590,000 4,757,394,000 4,399,353,000 4,271,755,000 3,993,637,000 3,798,690,000 3,748,262,000 3,652,846,000 3,266,197,000 3,216,871,000 2,964,429,000 2,953,609,000 2,556,303,000 2,520,083,000 2,504,916,000 2,492,814,000 2,485,427,000 2,472,013,000 2,453,538,000 2,429,759,000 2,406,272,000 2,368,556,000 2,292,918,000 2,247,047,000 2,165,355,000 2,040,761,000 2,005,713,000 1,991,551,000 1,964,418,000 1,953,971,000 
        deferred financing costs
                                               17,628,000 18,709,000 16,324,000 17,346,000 18,374,000 19,373,000 16,978,000 15,195,000 16,502,000 17,809,000 19,115,000 20,501,000 18,971,000 18,442,000 18,919,000 19,060,000 18,368,000 19,638,000 18,910,000 15,742,000 16,447,000 14,574,000 10,078,000 7,651,000 8,334,000 4,393,000 5,250,000 5,281,000 6,131,000 6,731,000 7,341,000 7,946,000 8,492,000 9,144,000 9,702,000 5,545,000 5,100,000 5,754,000 6,396,000 4,828,000 5,256,000 
        accrued distributions
                                                34,993,000 33,670,000 33,532,000 32,899,000 31,897,000 31,730,000 31,456,000 31,490,000 31,479,000 29,236,000 29,106,000 28,924,000 28,845,000 25,975,000 26,622,000 22,692,000 22,565,000 22,563,000 20,443,000 20,385,000 20,383,000 20,395,000 17,167,000 17,136,000 17,133,000 17,129,000 21,732,000 21,421,000 21,422,000 21,422,000 21,464,000 20,610,000 20,610,000 20,610,000 20,605,000 19,610,000 19,610,000 19,610,000 18,533,000 17,856,000 
        exchangeable senior notes
                                                    135,049,000 170,704,000 169,528,000 168,372,000 167,236,000 166,119,000 165,022,000 163,944,000 162,885,000 161,844,000 308,689,000 306,892,000 305,115,000 303,374,000 301,652,000 299,964,000 298,295,000 296,660,000 438,749,000 436,442,000 398,347,000 434,132,000 431,988,000 457,010,000 456,780,000 456,550,000 456,320,000 456,090,000 455,860,000 455,630,000       
        stockholders' equity
                                                                                        
        total stockholders' equity
                                                         2,186,351,000 2,185,005,000  2,019,167,000 1,693,780,000 1,690,315,000  1,261,271,000                        
        noncontrolling interest:
                                                                                        
        deferred leasing costs and acquisition-related intangibles assets
                                                           189,968,000    155,522,000                         
        liabilities, noncontrolling interest and equity
                                                                                        
        noncontrolling interest
                                                                                        
        7.45% series a cumulative redeemable preferred units of the operating partnership
                                                             73,638,000 73,638,000 73,638,000 73,638,000 73,638,000 73,638,000 73,638,000 73,638,000 73,638,000 73,638,000 73,638,000 73,638,000 73,638,000 73,638,000 73,638,000 73,638,000 73,638,000 73,638,000 73,638,000 73,638,000 73,638,000 73,638,000 73,638,000     
        7.45% series a cumulative redeemable preferred stock, .01 par value...
                                                                                        
        7.80% series e cumulative redeemable preferred stock, .01 par value...
                                                               38,425,000 38,425,000 38,425,000 38,425,000 38,425,000 38,425,000 38,425,000 38,425,000 38,425,000 38,425,000 38,425,000 38,425,000 38,425,000 38,425,000 38,425,000 38,425,000 38,425,000 38,425,000 38,425,000 38,425,000 38,425,000 38,425,000 38,425,000 38,425,000 38,425,000 
        7.50% series f cumulative redeemable preferred stock, .01 par value...
                                                               83,157,000 83,157,000 83,157,000 83,157,000 83,157,000 83,157,000 83,157,000 83,157,000 83,157,000 83,157,000 83,157,000 83,157,000 83,157,000 83,157,000 83,157,000 83,157,000 83,157,000 83,157,000 83,157,000 83,157,000 83,157,000 83,157,000 83,157,000 83,157,000 83,157,000 
        total liabilities, noncontrolling interest and equity
                                                           4,616,084,000 4,215,841,000 3,847,522,000 3,959,341,000 3,446,795,000 3,367,684,000 3,264,787,000 2,841,933,000 2,816,565,000 2,535,684,000 2,556,509,000 2,112,242,000 2,084,281,000                 
        7.80% series e and 7.50% series f cumulative redeemable preferred stock, called for redemption
                                                              126,500,000                          
        unsecured senior notes
                                                               980,569,000 980,487,000 655,929,000 655,866,000 655,803,000 330,941,000 391,888,000 144,000,000 144,000,000 144,000,000 144,000,000 144,000,000 144,000,000 144,000,000 144,000,000 144,000,000 144,000,000 144,000,000 144,000,000 144,000,000 144,000,000 144,000,000 144,000,000 144,000,000 144,000,000 
        total real estate assets
                                                                3,016,100,000 2,931,982,000 2,570,649,000 2,544,442,000 2,311,754,000 2,309,363,000 1,932,322,000 1,914,107,000 1,916,948,000 1,923,937,000 1,934,559,000 1,939,244,000 1,938,826,000 1,932,062,000 1,925,630,000 1,904,624,000 1,804,868,000 1,774,745,000 1,707,373,000 1,601,466,000 1,568,773,000 1,565,843,000 1,535,794,000 1,537,374,000 
        note receivable
                                                                     10,603,000 10,641,000 10,679,000    10,824,000    10,970,000   11,065,000 11,096,000 11,126,000 11,155,000 11,184,000 11,213,000 
        deferred leasing costs and acquisition-related intangibles
                                                                      56,570,000 51,832,000 49,627,000 49,803,000 52,151,000 53,539,000 54,044,000 52,282,000 53,335,000 54,418,000         
        deferred revenue and acquisition-related liabilities
                                                                      65,655,000 66,890,000 69,252,000 71,333,000 74,088,000 76,219,000 75,012,000 75,421,000 72,573,000 59,187,000         
        notes receivable
                                                                        10,716,000 10,753,000 10,789,000  10,870,000 10,904,000 10,938,000  11,002,000 11,034,000       
        liabilities, noncontrolling interests and equity
                                                                                        
        total liabilities, noncontrolling interests and equity
                                                                        2,079,002,000 2,087,582,000               
        liabilities and stockholders’ equity
                                                                                        
        minority interests
                                                                                        
        total minority interests
                                                                           102,006,000 102,763,000 110,246,000 111,201,000 111,947,000 109,606,000 110,036,000 110,450,000 113,266,000 113,976,000 117,837,000 113,075,000 124,100,000 
        total liabilities and stockholders’ equity
                                                                           2,099,583,000 2,099,498,000 2,087,725,000 2,085,909,000 2,068,720,000 1,963,750,000 1,927,685,000 1,854,715,000 1,799,352,000 1,759,799,000 1,713,762,000 1,684,309,000 1,674,474,000 
        minority interests:
                                                                                        
        series b junior participating preferred stock, .01 par value...
                                                                                        
        9.25% series d cumulative redeemable preferred stock, .01 par value...
                                                                                        
        properties held for sale
                                                                                   4,512,000     
        funds held at qualified intermediary for section 1031 exchange
                                                                                   43,794,000 43,794,000    
        7.45% series a cumulative redeemable preferred stock, 0.1 par value, 1,500,000 shares authorized, none issued and outstanding
                                                                                        
        series b junior participating preferred stock, 0.1 par value, 400,000 shares authorized, none issued and outstanding
                                                                                        
        deferred leasing costs and acquisition related intangibles
                                                                                56,629,000 46,381,000 48,598,000 49,019,000     
        deferred revenue and acquisition related liabilities
                                                                                56,638,000 52,026,000 29,923,000 25,353,000     
        deferred compensation
                                                                                       -1,998,000 
        deferred leasing costs and other related intangibles
                                                                                    48,790,000 49,108,000 48,853,000 50,074,000 
        rents received in advance, tenant security deposits and deferred revenue
                                                                                    41,462,000 43,297,000 40,270,000 36,410,000 
        7.45% series a cumulative redeemable preferred unitholders
                                                                                    73,638,000 73,638,000 73,638,000 73,638,000 
        common unitholders of the operating partnership
                                                                                    40,338,000 44,199,000 39,437,000 50,462,000 
        7.45% series a cumulative redeemable preferred stock, 0.1 par value, 1,700,000 shares authorized, none issued and outstanding
                                                                                        
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 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 2011-12-31 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 
                                                                                       
          cash flows from operating activities:
                                                                                       
          net income
        -14,673,000 17,109,000 162,282,000 79,568,000 43,681,000 65,034,000 57,673,000 53,046,000 58,737,000 61,275,000 65,230,000 59,475,000 86,660,000 53,975,000 59,383,000 55,126,000 53,493,000 42,880,000 507,411,000 83,452,000 54,071,000 24,352,000 45,418,000 77,922,000 48,298,000 47,215,000 41,794,000 166,890,000 38,310,000 31,755,000 40,971,000 32,540,000 75,488,000 35,306,000 37,281,000 35,418,000 56,375,000 33,892,000 178,113,000 29,308,000 106,704,000 58,590,000 44,002,000 31,430,000 19,303,000 31,143,000 101,932,000 23,047,000 9,027,000 10,103,000 2,388,000 193,630,000 2,523,000 2,277,000 78,671,000 44,860,000 14,290,000 3,472,000 4,867,000 5,384,000 3,669,000 1,956,000 8,877,000 671,000 12,230,000 13,341,000 11,773,000 8,294,000 15,578,000 7,983,000 12,266,000 68,015,000 11,431,000 15,496,000 18,880,000 11,585,000 33,973,000 20,375,000 15,931,000 
          adjustments to reconcile net income to net cash from operating activities:
                                                                                       
          depreciation and amortization of real estate assets and leasing costs
        92,885,000 91,213,000 86,080,000 86,243,000 85,735,000 87,536,000 90,243,000 84,402,000 83,518,000 88,473,000 91,671,000 89,536,000 79,410,000 94,718,000 87,001,000 85,628,000 71,703,000 72,037,000 74,431,000 71,512,000 70,422,000 75,981,000 72,438,000 68,078,000 67,985,000 67,011,000 64,971,000 63,640,000 61,609,000 62,956,000 61,677,000 59,987,000 61,141,000 61,000,000 59,734,000 55,569,000                                            
          depreciation of non-real estate furniture, fixtures, and equipment
        1,459,000 1,410,000 1,407,000 1,382,000 1,384,000 1,585,000 1,636,000                                                                         
          revenues deemed uncollectible
        358,000 528,000 170,000 199,000 621,000                                                                           
          non-cash amortization of deferred revenue related to tenant-funded tenant improvements
        -3,218,000 -3,547,000 -3,639,000 -3,770,000 -3,688,000 -4,066,000 -4,212,000 -4,538,000 -4,733,000 -4,912,000 -4,998,000 -5,100,000 -5,017,000 -4,943,000 -4,261,000 -4,265,000 -4,067,000 -4,711,000 -4,204,000 -4,433,000 -4,321,000 -4,373,000 -4,420,000 -4,243,000 -6,766,000 -4,364,000 -3,817,000 -4,749,000 -4,811,000 -4,588,000 -4,281,000 -4,373,000 -4,151,000 -4,548,000 -3,695,000 -3,544,000                                            
          straight-line rents
        -701,000 2,358,000 1,303,000 3,354,000 4,613,000 4,048,000 1,867,000 -2,729,000 -2,897,000 -5,723,000 -7,913,000 -7,992,000 -10,206,000 -14,186,000 -13,847,000 -12,507,000 -10,209,000 -13,737,000 -17,292,000 -15,936,000 -18,376,000 -13,519,000 -19,995,000 -23,298,000 -18,788,000 -17,042,000 -12,895,000 -10,683,000 -5,727,000 -5,207,000 -5,359,000 -7,738,000 -10,000,000 -7,926,000 -7,611,000 -6,773,000 -4,319,000 -9,086,000 -9,451,000 -8,853,000 -6,955,000 -8,883,000 -19,692,000 -16,537,000 -7,452,000 -3,834,000 -3,959,000 -5,947,000 -6,103,000 -5,361,000 -6,724,000 -5,097,000 -5,858,000 -5,088,000 -5,487,000                         
          non-cash amortization of net below-market rents
        -641,000                                                                               
          non-cash amortization of deferred financing costs and debt discounts
        1,662,000 1,162,000 1,218,000 1,178,000 1,219,000  1,926,000  1,312,000 1,254,000 1,355,000  805,000 816,000 821,000  642,000                                                               
          non-cash amortization of share-based compensation awards
        4,869,000 5,145,000 5,436,000 4,582,000 3,927,000 4,443,000 4,580,000 8,498,000 10,596,000 7,721,000 10,043,000 6,712,000 8,419,000 7,960,000 5,256,000 7,314,000 9,071,000 9,538,000 7,877,000 5,955,000 5,979,000 11,528,000 6,783,000 6,807,000 6,118,000 6,871,000 7,211,000 9,031,000 6,634,000 8,669,000 3,598,000 5,429,000 4,651,000 4,832,000 4,134,000 5,801,000                              2,736,000 2,807,000 3,813,000 4,143,000           
          amortization of right of use ground lease assets
        282,000 280,000 278,000 275,000 273,000 270,000 268,000 259,000 257,000 255,000 253,000 178,000 -121,000 359,000 356,000 355,000 462,000 213,000 211,000 210,000 207,000 205,000 203,000  162,000 147,000 144,000                                                     
          gains on sales of depreciable operating properties
        -23,525,000                              -37,250,000 -2,257,000 -18,312,000    -78,522,000                                       
          impairment of real estate assets
        61,778,000                                                                               
          net change in other operating assets
        131,000 6,334,000 -2,313,000 6,539,000 -21,886,000 9,321,000 5,670,000 280,000 10,286,000 -11,093,000 2,849,000 -7,283,000 -188,000 -7,792,000 2,657,000 -310,000 -2,145,000 -5,332,000 1,710,000 560,000 -18,236,000 6,025,000 7,966,000 10,276,000 -9,212,000 -7,158,000 -8,382,000 1,233,000 -3,650,000 -873,000 -4,640,000 -762,000 -9,552,000 -5,607,000 -1,811,000 2,049,000 -1,192,000 -7,632,000 1,561,000 1,271,000 -256,000 -679,000 -8,421,000 1,162,000 4,254,000 900,000 -5,949,000 1,820,000 -307,000 1,262,000 -7,390,000 1,232,000 1,789,000 -449,000 -3,869,000                         
          net change in other operating liabilities
        30,029,000 -28,549,000 35,594,000 -18,405,000 21,888,000 -52,518,000 16,816,000 -38,537,000 50,427,000 -36,969,000 22,236,000 -27,977,000 61,954,000 -29,373,000 43,837,000 -27,130,000 70,060,000 -29,077,000 29,147,000 -19,816,000 47,540,000 -7,772,000 8,209,000 -20,246,000 48,914,000 -19,595,000 15,102,000 11,235,000 35,510,000 -1,998,000 3,598,000 -18,960,000 17,280,000 -2,216,000 9,791,000 4,054,000 25,300,000 -12,566,000 2,710,000 -4,110,000 16,639,000 -5,578,000 5,545,000 -9,038,000 29,132,000 2,240,000 -5,701,000 -2,707,000 26,946,000 -2,683,000 18,581,000 -14,645,000 24,680,000 -7,671,000 14,956,000                         
          net cash from operating activities
        150,695,000 109,078,000 176,568,000 143,746,000 136,921,000 108,237,000 176,350,000 110,223,000 208,816,000 101,414,000 182,136,000 108,005,000 205,281,000 100,290,000 178,659,000 108,843,000 191,094,000 72,314,000 144,152,000 91,610,000 139,958,000 101,082,000 122,940,000 85,131,000 135,730,000 65,870,000 99,790,000 92,828,000 128,372,000 94,734,000 94,109,000 70,470,000 98,126,000 82,041,000 96,375,000 92,449,000 114,976,000 59,425,000 78,204,000 69,396,000 85,784,000 61,849,000 54,979,000 47,989,000 90,402,000 61,781,000 45,081,000 54,266,000 79,306,000 50,505,000 56,499,000 33,397,000 68,694,000 29,891,000 48,742,000 24,191,000 57,600,000 12,668,000 43,797,000 24,899,000 37,540,000 23,820,000 33,568,000 26,965,000 37,098,000 31,797,000 29,105,000 29,039,000 51,322,000 32,610,000 31,510,000 30,761,000 42,122,000 39,955,000 34,662,000 29,534,000 33,727,000 42,875,000 -44,566,000 
          capital expenditures
          free cash flows
        150,695,000 109,078,000 176,568,000 143,746,000 136,921,000 108,237,000 176,350,000 110,223,000 208,816,000 101,414,000 182,136,000 108,005,000 205,281,000 100,290,000 178,659,000 108,843,000 191,094,000 72,314,000 144,152,000 91,610,000 139,958,000 101,082,000 122,940,000 85,131,000 135,730,000 65,870,000 99,790,000 92,828,000 128,372,000 94,734,000 94,109,000 70,470,000 98,126,000 82,041,000 96,375,000 92,449,000 114,976,000 59,425,000 78,204,000 69,396,000 85,784,000 61,849,000 54,979,000 47,989,000 90,402,000 61,781,000 45,081,000 54,266,000 79,306,000 50,505,000 56,499,000 33,397,000 68,694,000 29,891,000 48,742,000 24,191,000 57,600,000 12,668,000 43,797,000 24,899,000 37,540,000 23,820,000 33,568,000 26,965,000 37,098,000 31,797,000 29,105,000 29,039,000 51,322,000 32,610,000 31,510,000 30,761,000 42,122,000 39,955,000 34,662,000 29,534,000 33,727,000 42,875,000 -44,566,000 
          cash flows from investing activities:
                                                                                       
          expenditures for development and redevelopment properties and undeveloped land
        -102,647,000 -50,830,000 -42,114,000 -26,396,000 -55,347,000 -74,928,000 -110,022,000 -107,632,000 -124,517,000 -113,820,000 -100,457,000 -119,063,000 -107,537,000 -114,860,000 -112,314,000                         -96,053,000 -112,558,000 -109,548,000 -89,810,000 -124,981,000 -131,001,000 -88,176,000 -73,626,000 -97,949,000 -96,962,000 -51,861,000 -73,369,000 -30,373,000 -26,853,000 -12,607,000 -13,477,000 -9,835,000 -6,335,000 -5,633,000 -6,714,000                     
          expenditures for operating properties and other capital assets
        -29,945,000 -41,518,000 -27,886,000 -25,308,000 -21,313,000 -35,922,000 -29,186,000 -28,540,000 -23,740,000 -24,222,000 -20,891,000 -27,276,000 -20,014,000 -28,485,000 -17,027,000 -30,331,000 -26,377,000 -35,661,000 -28,242,000 -40,036,000 -8,834,000 -36,546,000 -44,084,000 -48,208,000        -26,550,000 -21,137,000 -19,292,000 -21,446,000 -30,273,000 -16,145,000                                           
          net proceeds received from dispositions of real estate assets
        141,440,000                                                                               
          non-refundable deposits received for future dispositions
        6,200,000                                                                               
          net cash from investing activities
        15,048,000 -229,106,000 89,424,000 -23,683,000 -76,660,000 -91,496,000 -174,363,000 -139,923,000 -401,087,000 -138,042,000 -121,348,000 -146,339,000 -94,135,000 -143,345,000 -169,374,000 -110,761,000 -732,418,000 -716,948,000 812,250,000 -66,427,000 -101,360,000 -162,929,000 -211,412,000 -501,095,000 -310,148,000 -203,504,000 -213,532,000 -3,515,000 -141,054,000 -416,691,000 -247,655,000 -178,390,000 35,306,000 -129,630,000 -86,388,000 -511,228,000 180,324,000 -177,798,000 -126,733,000 -126,086,000 -51,646,000 -7,711,000 -77,309,000 -312,478,000 -67,094,000 -219,142,000 97,278,000 -224,856,000 -261,042,000 -64,069,000 43,447,000 -165,183,000 -239,731,000 -204,508,000 -97,084,000 -81,068,000 -117,696,000 -374,382,000 -61,137,000 -267,119,000 -20,547,000 -376,644,000 -37,464,000 -13,075,000 -13,801,000 -8,562,000 -15,036,000 -18,226,000 -24,821,000 -24,260,000 -26,518,000 -55,143,000 -57,773,000 -64,351,000 -67,535,000 -45,332,000 -37,676,000 -41,335,000 -11,850,000 
          cash flows from financing activities:
                                                                                       
          distributions to noncontrolling interests in consolidated property partnerships
        -6,380,000 -6,851,000 -11,988,000 -7,098,000 -7,226,000 -6,383,000 -4,621,000 -7,279,000 -5,341,000 -10,417,000 -7,060,000 -8,772,000 -5,691,000 -6,972,000 -14,834,000 -3,298,000 -7,914,000 -4,717,000 -11,672,000 -6,884,000 -1,448,000 -4,307,000 -2,608,000 -2,108,000 -3,032,000 -1,511,000 -6,301,000 -4,789,000 -529,000 -4,315,000 -2,170,000 -4,308,000 -3,583,000 -3,923,000 -4,728,000 -2,476,000                                            
          dividends and distributions paid to common stockholders and common unitholders
        -64,534,000 -64,505,000 -64,501,000 -64,489,000 -64,366,000 -64,368,000 -64,008,000 -63,931,000 -63,897,000 -63,867,000 -63,735,000 -63,734,000 -61,372,000 -61,289,000 -61,161,000 -61,159,000 -58,802,000 -58,800,000 -58,594,000 -58,592,000 -56,799,000 -56,788,000 -52,399,000 -52,440,000 -49,954,000 -46,862,000 -46,996,000 -46,772,000 -46,708,000 -42,898,000 -43,033,000 -42,704,000 -42,701,000 -37,649,000 -217,643,000 -35,902,000 -35,607,000 -32,991,000 -32,944,000 -32,929,000 -31,599,000 -31,465,000 -30,846,000 -29,923,000 -29,676,000 -29,303,000 -29,561,000 -29,365,000 -28,154,000 -27,042,000 -26,956,000 -26,869,000 -24,804,000 -24,522,000 -21,191,000 -21,063,000 -21,065,000 -18,952,000 -18,925,000 -18,925,000 -18,907,000 -15,687,000 -15,705,000 -15,703,000 -15,705,000 -20,189,000 -20,207,000 -20,208,000 -20,210,000 -20,255,000 -19,400,000 -19,396,000 -19,397,000 -19,396,000 -18,400,000 -18,398,000 -18,401,000 -17,322,000 -16,647,000 
          taxes paid upon net share settlement of restricted share units
        -6,970,000                                                                               
          principal payments and repayments of secured debt
        -1,600,000 -1,584,000 -1,569,000 -1,554,000 -1,539,000 -1,524,000 -1,509,000 -1,465,000 -1,450,000 -1,437,000 -1,423,000 -1,409,000 -1,396,000 -1,381,000 -1,369,000 -1,354,000 -1,342,000 -1,329,000 -1,316,000 -1,303,000 -1,291,000 -1,277,000 -1,266,000 -465,000 -460,000 -454,000 -74,930,000                                                     
          repurchase of common stock
        -72,671,000                                                           -1,296,000 -2,121,000 -2,725,000 -28,000 -4,135,000 -10,635,000 -2,631,000 -2,891,000 
          financing costs
         -4,398,000 -307,000 -100,000 -459,000 -629,000 38,000 -8,950,000 -784,000 -1,228,000 -3,349,000 -2,482,000 -283,000 -318,000 -4,231,000 -232,000 -7,334,000 -235,000 -378,000 -3,933,000 -2,123,000 -160,000 -1,130,000 -4,213,000 -393,000 -942,000 -3,984,000 -438,000 -1,380,000 -460,000 -4,020,000 -5,289,000 -325,000 -1,866,000 -674,000 -806,000 -342,000 -337,000 -280,000 -3,765,000 -372,000 -397,000 -605,000 -4,137,000 -3,488,000 -418,000 -409,000 -428,000 -677,000 -2,870,000 -2,567,000 -1,752,000 -1,767,000 -1,877,000 -476,000 -3,383,000 -4,041,000 -1,160,000 -3,712,000 -6,557,000 -4,074,000 -569,000 -7,878,000 -403,000 -863,000 -181,000 -163,000 -171,000 -224,000 -299,000 -975,000 -327,000 -5,179,000 -110,000 -76,000 -2,084,000 -30,000 
          net cash from financing activities
        -152,155,000 -73,072,000 -86,705,000 -73,645,000 -79,240,000 -476,446,000 -212,485,000 -78,931,000 449,180,000 -77,845,000 68,191,000 122,723,000 -71,208,000 -78,585,000 -91,676,000 67,542,000 -66,981,000 -72,180,000 -92,954,000 -67,362,000 205,399,000 -95,275,000 790,562,000 188,388,000 419,623,000 140,356,000 -1,299,000 -4,796,000 48,382,000 319,705,000 139,817,000 -69,512,000 -285,067,000 -42,136,000 225,474,000 361,674,000 -71,109,000 106,060,000 30,666,000 -454,742,000 505,660,000 -76,177,000 48,730,000 87,839,000 152,552,000 86,398,000 -82,202,000 8,817,000 271,063,000 -14,289,000 19,030,000 132,373,000 169,039,000 -181,640,000 417,933,000 46,173,000 50,165,000 380,418,000 9,208,000 248,747,000 -38,108,000 371,516,000 4,749,000 -13,272,000 -27,380,000 -26,143,000 -7,366,000 -11,315,000 -20,813,000 -8,864,000 -11,843,000 32,459,000 8,172,000 30,363,000 26,092,000 19,996,000 3,116,000 -4,352,000 63,930,000 
          net increase in cash and cash equivalents
        13,588,000                                   -57,105,000 224,191,000 -12,313,000 -17,863,000 -511,432,000 539,798,000 -22,039,000 26,400,000 -176,650,000 175,860,000 -70,963,000 60,157,000 -161,773,000 89,327,000 -27,853,000 118,976,000 587,000 -1,998,000 -356,257,000 369,591,000 -10,704,000 -9,931,000 18,704,000 -8,132,000   18,692,000 853,000         8,077,000 -7,479,000 5,967,000 -6,781,000 4,198,000 -833,000 -2,812,000 7,514,000 
          cash and cash equivalents, beginning of period
        179,316,000                                    56,508,000  23,781,000  35,377,000  16,700,000  4,777,000  14,840,000  9,883,000  9,553,000  11,732,000  11,948,000  3,881,000 
          cash and cash equivalents, end of period
        192,904,000                                    224,191,000 -12,313,000 38,645,000  539,798,000 -22,039,000 50,181,000  175,860,000 -70,963,000 95,534,000  89,327,000 -27,853,000 135,676,000  -1,998,000 -356,257,000 374,368,000  -9,931,000 18,704,000 6,708,000  -21,115,000 18,692,000 10,736,000  -4,083,000 -2,908,000 16,256,000  5,688,000 -514,000 4,881,000  -7,479,000 5,967,000 5,167,000  -833,000 -2,812,000 11,395,000 
          gain on sale of long-lived assets
                                                                                       
          expenditures for acquisitions of operating properties
         -192,243,000                                                                            
          net proceeds received from disposition of long-lived assets
                                                                                       
          maturity (purchases) of certificates of deposit
                                                                                       
          proceeds from the issuance of unsecured debt
                         422,297,000            250,000,000            299,901,000 150,000,000                         
          proceeds from the issuance of secured debt
                                                                                       
          repayments of unsecured debt
            -403,712,000 -120,000,000                        -330,024,000                                              
          borrowings on unsecured debt
               170,000,000 150,000,000                 120,000,000                                                 
          repurchases of unsecured debt
               -6,294,000                                                                        
          borrowings on unsecured revolving credit facility
                          190,000,000 480,000,000 205,000,000 235,000,000 190,000,000 120,000,000 140,000,000 415,000,000 90,000,000 200,000,000    35,000,000 190,000,000 80,000,000                                         
          repayments on unsecured revolving credit facility
                          -380,000,000 -55,000,000 -235,000,000 -580,000,000 -45,000,000 -50,000,000 -405,000,000 -105,000,000 -170,000,000 -10,000,000 -260,000,000    -255,000,000 -45,000,000 -5,000,000                                         
          net increase in cash and cash equivalents and restricted cash
         -193,100,000 179,287,000 46,418,000 -18,979,000 -459,705,000 -210,498,000 -108,631,000 256,909,000 -114,473,000 128,979,000   -121,640,000 -82,391,000 65,624,000 -608,305,000 -716,814,000 863,448,000 -42,179,000 243,997,000 -157,122,000 702,090,000 -227,576,000    84,517,000 35,700,000 -2,252,000 -13,729,000 -177,432,000 -151,635,000 -89,725,000 235,461,000                                             
          cash and cash equivalents and restricted cash, beginning of year
                                                                                       
          cash and cash equivalents and restricted cash, end of year
                                                                                       
          non-cash amortization of net below market rents
          -764,000 -845,000 -846,000 -846,000 -885,000 -973,000 -1,034,000 -1,608,000 -3,033,000 -2,305,000 -2,540,000 -2,739,000 -2,892,000 -3,200,000 -1,510,000 -1,013,000 -1,181,000 -1,334,000 -1,769,000 -1,914,000 -2,586,000 -2,965,000 -1,826,000 -2,321,000 -2,094,000 -2,101,000 -2,166,000 -2,938,000 -2,543,000 -2,502,000 -2,423,000 -1,191,000 -2,412,000 -2,038,000                                            
          net proceeds received from dispositions
          364,432,000             35,568,000 542,000 1,012,817,000     107,150,000       170,627,000 11,865,000 48,409,000 14,213,000 262,409,000                                         
          maturity of certificates of deposit
                                                                                       
          repurchase of common stock and restricted stock units
          -213,000 -197,000 -6,009,000 -21,718,000 -1,892,000 -1,340,000 -8,363,000 -13,000 -267,000 -8,660,000 -13,994,000 -469,000 -282,000 -21,137,000 -195,000 -3,353,000 -735,000 -9,799,000 -287,000 -1,651,000 -488,000 -12,130,000 -2,911,000 -13,642,000 -1,344,000 -628,000 -11,014,000 -2,001,000 -991,000 -264,000 -5,619,000 -3,960,000 -1,285,000 -15,000 -1,821,000 -672,000 -329,000 -1,015,000 -1,517,000 -707,000 -135,000 -469,000 -1,209,000 -925,000 -133,000 -603,000 -416,000 -4,000 -732,000                     
          cash and cash equivalents and restricted cash, beginning of period
          165,690,000   347,379,000  427,083,000  823,130,000  76,344,000  171,034,000  66,798,000  250,129,000                                             
          cash and cash equivalents and restricted cash, end of period
          179,287,000 46,418,000 146,711,000  -210,498,000  256,909,000 -114,473,000 476,358,000  39,938,000 -121,640,000 344,692,000  -608,305,000 -716,814,000 1,686,578,000  243,997,000 -157,122,000 778,434,000  245,205,000 2,722,000 55,993,000  35,700,000 -2,252,000 53,069,000  -151,635,000 -89,725,000 485,590,000                                             
          gain on sale of depreciable operating property
                                                                                      
          revenue reversals
                 852,000 2,438,000         4,792,000 1,824,000                                                           
          non-cash amortization of deferred financing costs and net debt discounts
                                                                                       
          gain on sales of long-lived assets
                                                                                       
          maturity
                                                                                      
          expenditures for acquisitions of development properties and undeveloped land
                   -40,033,000                                                               
          net proceeds received from dispositions of long-lived assets
                                                                                       
          revenue reversals for doubtful accounts
              768,000          2,084,000 -289,000 1,035,000                                                             
          depreciation of non-real estate furniture, fixtures and equipment
               1,614,000 1,706,000 1,889,000 2,005,000 1,860,000 1,730,000 1,697,000 1,659,000 1,681,000 1,510,000 1,552,000 1,501,000 1,478,000 1,441,000 4,104,000 1,932,000 1,435,000 1,245,000 1,241,000 1,164,000 1,221,000 1,091,000 1,050,000 1,038,000 162,000 1,426,000 1,251,000 1,185,000 1,213,000                                            
          loss on early extinguishment of debt
                                                                                     
          investments in certificates of deposit
                                                                                       
          decrease in acquisition-related deposits
                                                  3,099,000                                     
          net proceeds from the issuance of unsecured debt
                                                                                       
          proceeds from exercise of stock options
                               639,000     128,000 3,529,000 8,522,000 10,035,000 1,236,000 681,000 256,000 3,281,000 554,000 256,000 10,482,000 555,000 6,691,000 13,825,000 21,000   129,000 395,000 83,000            
          contributions from noncontrolling interests in consolidated property partnerships
                       -32,000               54,354,000 250,000 261,773,000                                            
          purchases of certificates of deposit
                                                                                       
          net proceeds received from disposition
                                                                                       
          proceeds from issuance of secured debt
                                                               135,000,000  71,000,000                 
          revenue
                     -202,000 -1,311,000                                                                 
          net proceeds from issuance of common stock
                           -10,000 -74,000 -45,000 721,794,000 -182,000    -51,000 6,597,000   17,246,000 -20,000 -17,000 308,849,000     -111,000 249,585,000 24,827,000 113,097,000 80,093,000   307,162,000 19,394,000 23,395,000 9,731,000 253,896,000 26,412,000 382,063,000 12,297,000     6,000 16,000           -51,000   
          net decrease in acquisition-related deposits
                                                                                      
          net decrease in cash and cash equivalents and restricted cash
                                 2,722,000 -115,041,000                                                     
          expenditures for development properties and undeveloped land
                        -173,612,000 -90,902,000 -172,325,000 -100,328,000 -92,526,000 -126,383,000 -167,328,000 -290,513,000 -182,201,000 -191,055,000 -181,695,000 -177,889,000 -107,308,000 -92,615,000 -111,424,000 -126,601,000 -109,794,000 -93,088,000 -67,957,000 -128,293,000 -60,597,000 -98,420,000 -63,702,000                                         
          net increase in acquisition-related deposits
                                      -5,000,000                                                 
          non-cash amortization of deferred financing costs and debt discounts and premiums
                          794,000  1,176,000 571,000 505,000  194,000 582,000 135,000  234,000 267,000 315,000 849,000 929,000 731,000 738,000 700,000                                            
          gain on sale of depreciable operating properties
                          -457,288,000                                                            
          gain on sale of land
                                                -17,268,000                                   
          proceeds received from repayment of note receivable
                                   15,100,000                                                 
          expenditures for acquisition of undeveloped land
                                           -33,513,000                                         
          revenue reversals (recoveries) for doubtful accounts
                              6,487,000                                                         
          amortization of the right of use ground lease asset
                                                                                       
          loss on sale of land
                                                                                       
          redemption of series g and h preferred stock
                                                                                      
          dividends and distributions paid to preferred stockholders and preferred unitholders
                                       -1,603,000 -1,615,000 -4,191,000 -3,312,000 -3,313,000 -3,312,000 -3,313,000 -3,312,000 -3,313,000 -3,312,000 -3,313,000 -3,312,000 -3,313,000 -3,312,000 -3,313,000 -3,312,000 -3,312,000 -3,313,000 -3,313,000 -3,313,000 -3,100,000 -3,953,000 -3,799,000 -3,799,000 -3,799,000 -3,799,000 -3,799,000 -3,799,000 -3,799,000 -3,799,000 -3,799,000 -3,799,000 -3,799,000 -3,799,000 -3,799,000 -3,799,000 -3,799,000 -3,799,000 -3,799,000 -3,799,000 -3,799,000 -3,799,000 -3,799,000 -3,799,000 -3,799,000 -3,800,000 -3,798,000 
          expenditures for acquisition of operating properties
                                    -111,029,000             -106,125,000  -116,990,000 -85,692,000    -162,380,000  -103,202,000 -345,554,000 -33,000,000                     
          expenditures for operating properties
                                 -29,720,000 -31,837,000  -33,746,000 -38,777,000 -35,302,000        -25,938,000 -27,801,000 -20,787,000 -26,624,000 -24,345,000 -38,103,000 -27,054,000 -34,907,000 -32,016,000 -45,882,000 -33,784,000 -24,636,000 -25,571,000 -25,410,000 -20,749,000 -22,911,000 -17,307,000 -21,652,000 -12,857,000 -12,245,000 -15,985,000 -14,706,000 -22,800,000 -19,376,000 -14,217,000 -10,485,000 -7,318,000 -8,117,000 -9,612,000 -5,607,000 -5,659,000 -6,299,000 -7,415,000 -6,175,000 -12,034,000 -7,160,000 -12,674,000 -5,765,000 -7,790,000 -11,116,000 -7,804,000 
          increase in benefit from bad debts
                                         409,000 1,298,000     256,000   242,000            503,000                        
          decrease (increase) in acquisition-related deposits
                                                                                       
          issuance of notes receivable
                                                                                       
          increase in provision for bad debts
                                    1,338,000 5,641,000 -265,000                   95,000    2,000   120,000 26,000 -220,000 -857,000 -12,000 26,000                 
          principal payments on secured debt
                                    -902,000 -890,000 -878,000  -1,527,000 -1,508,000 -2,705,000  -2,446,000 -2,431,000 -2,377,000  -2,564,000 -36,299,000 -28,472,000 -2,530,000 -2,456,000 -2,445,000 -2,414,000 -2,390,000 -4,070,000 -2,310,000 -84,918,000 -1,684,000 -1,324,000 -101,708,000 -1,546,000 -122,370,000 -1,892,000 -1,805,000 -1,598,000 -1,594,000 -1,549,000 -1,544,000 -98,560,000 -2,214,000 -4,156,000 -11,942,000 -3,454,000 -2,117,000 -74,633,000 -2,472,000 -3,710,000 -2,371,000 -2,334,000 -54,613,000 -3,968,000 -3,807,000 -2,557,000 -2,516,000 -5,204,000 
          redemption of series g preferred stock
                                         -100,000,000                                             
          (gain) loss on sales of land
                                                                                       
          increase in acquisition-related deposits
                                         -17,250,000 -8,850,000    -4,085,000              20,000,000 -23,000,000 -5,250,000                         
          increase in note receivable
                                            -1,000,000                                         
          adjustments to reconcile net income to net cash from operating activities
                                                                                       
          gains on sales of discontinued operations
                                                                                       
          gain on sales of land
                                                                                     
          increase in restricted cash
                                           790,000 208,657,000 -4,558,000 -260,904,000        -779,000     -12,833,000   -386,000         877,000     -747,000           
          repayments of exchangeable senior notes
                                                                                     
          cash and cash equivalents, beginning of year
                                                                                       
          cash and cash equivalents, end of year
                                                                                       
          depreciation and amortization of building and improvements and leasing costs
                                             52,463,000 49,664,000  48,719,000 50,969,000 50,843,000  49,996,000 50,165,000 48,717,000  50,184,000 48,787,000 50,011,000 45,933,000 45,962,000 40,328,000 36,464,000 38,496,000 35,942,000 31,970,000 29,059,000 28,849,000 29,820,000 23,501,000 20,728,000 20,807,000 21,759,000 23,272,000 20,987,000 21,017,000 20,464,000 21,339,000 19,671,000 20,597,000 18,560,000 17,525,000 17,026,000 17,612,000 17,978,000 18,099,000 17,508,000 
          depreciation of furniture, fixtures and equipment
                                             883,000 776,000 776,000 703,000 689,000 644,000 639,000 644,000 602,000 485,000 566,000 466,000 517,000 380,000 317,000 312,000 296,000 288,000 291,000 309,000 278,000 252,000 246,000 234,000 221,000 210,000 212,000 209,000 208,000 198,000 195,000 197,000 197,000 195,000 198,000 211,000 220,000 211,000 227,000 245,000 195,000 199,000 
          noncash amortization of share-based compensation awards
                                             5,331,000 4,703,000 4,265,000 3,622,000 4,079,000 3,571,000 3,278,000 3,372,000 2,943,000 2,502,000 2,162,000 2,174,000 2,046,000 2,234,000 2,126,000 2,125,000 2,132,000 1,287,000 1,117,000 1,126,000 1,133,000 1,106,000 703,000 1,809,000 1,813,000 1,706,000 4,339,000                
          noncash amortization of deferred financing costs and debt discounts and premiums
                                             697,000 609,000 441,000 523,000 435,000 454,000 752,000 1,126,000 1,181,000 1,256,000  1,382,000 1,252,000 1,413,000  1,768,000 2,334,000 2,976,000 3,376,000 3,280,000                       
          noncash amortization of net below market rents
                                             -1,640,000 -1,603,000 -1,680,000 -1,740,000 -3,101,000 -1,928,000 -2,112,000 -1,766,000 -2,716,000 -1,734,000  -1,938,000 -2,030,000 -2,047,000                             
          noncash amortization of deferred revenue related to tenant-funded tenant improvements
                                             -3,212,000 -2,888,000 -3,381,000 -3,653,000 -3,291,000 -3,013,000 -3,284,000 -2,678,000 -2,664,000 -2,353,000 -3,128,000 -2,626,000 -2,517,000 -2,442,000 -2,285,000 -2,386,000 -2,204,000 -2,261,000 -2,344,000 -2,337,000 -2,342,000 -2,326,000 -2,581,000 -2,333,000 -2,423,000 -2,352,000                 
          distributions to noncontrolling interests in consolidated subsidiary
                                                                                       
          contributions from noncontrolling interests in consolidated subsidiary
                                               271,000   641,000                                    
          gains on sale of depreciable operating properties
                                              -145,990,000                                         
          gains on sale of land
                                                                                       
          depreciation and amortization of buildings and improvements and leasing costs
                                                                                       
          net gain on dispositions of depreciable operating properties
                                                                                       
          net gain on dispositions of discontinued operations
                                                      -90,115,000 -11,829,000   -186,436,000 -72,809,000 -39,032,000                      
          net gain on sales of land
                                                                                       
          insurance proceeds received for property damage and other
                                                                                       
          expenditures for acquisitions of development and redevelopment properties
                                                                                       
          expenditures for acquisitions of operating properties, net of cash acquired
                                                                                       
          net proceeds received from dispositions of operating properties and land
                                                   59,163,000                                    
          issuance of note receivable
                                                                                      
          net decrease (increase) in acquisition-related deposits
                                                                                       
          net decrease
                                                                                       
          insurance proceeds received for property damage
                                                       896,000   2,702,000 -951,000                         
          borrowings on unsecured line of credit
                                                 100,000,000 150,000,000 140,000,000 160,000,000 115,000,000 90,000,000 45,000,000    286,000,000 165,000,000 223,000,000 30,000,000 248,000,000 260,000,000 42,000,000 107,000,000 265,000,000 225,000,000 63,000,000 40,000,000 32,000,000 35,000,000 35,000,000             
          repayments on unsecured line of credit
                                                 -130,000,000 -160,000,000 -250,000,000 -25,000,000 -135,000,000 -10,000,000 -185,000,000 -128,000,000 -240,000,000 -121,000,000 -212,000,000 -66,000,000 -245,000,000 -72,000,000 -144,000,000 -153,000,000 -210,000,000 -225,000,000 -10,000,000 -69,000,000 -216,000,000 -12,000,000             
          gains on dispositions of discontinued operations
                                                    -5,587,000                                   
          expenditures for acquisition of development properties
                                                -78,475,000 -1,699,000 -50,435,000                                     
          net proceeds received from dispositions of land and operating properties
                                                153,842,000 140,234,000 25,563,000                                     
          decrease in restricted cash
                                                -668,000    76,035,000     224,000 228,079,000       550,000 -438,000 1,804,000 220,000 -931,000 2,027,000   137,000 -56,000    535,000   -619,000 494,000    54,000 
          repayments for early redemption of exchangeable senior notes
                                                                                       
          decrease
                                                  58,619,000                                     
          net proceeds from issuance of series g and series h preferred stock
                                                                                      
          redemption of series e and series f preferred stock
                                                                                     
          redemption of series a preferred units
                                                                                      
          expenditures for acquisition of development and redevelopment properties
                                                    -874,000    -10,616,000                               
          insurance proceeds received from property damage
                                                                                       
          net proceeds received from dispositions of operating properties
                                                     43,757,000 309,824,000 6,769,000   121,762,000 -1,351,000 42,396,000 100,765,000             75,519,000 14,473,000 -55,000 15,563,000 
          noncash amortization of deferred financing costs and net debt discounts
                                                                                       
          noncash amortization of net
                                                           -2,083,000 -2,027,000 -2,064,000 -525,000                         
          decrease in loan deposits and other
                                                                                       
          net proceeds from issuance of series g preferred stock
                                                             -602,000 96,757,000                         
          receipt of principal payments on note receivable
                                                                   10,603,000 38,000 38,000    35,000 46,000 34,000 34,000 32,000         
          repurchase of exchangeable senior notes
                                                                     -115,057,000                
          decrease (increase) in loan deposits and other
                                                                                       
          expenditures for acquisition of operating properties, net of cash acquired
                                                            -120,877,000                           
          decrease in loan deposits
                                                                 2,027,000    1,420,000                 
          noncash amortization of above/
                                                                 745,000 653,000                     
          gain on early extinguishment of debt
                                                                       -1,790,000                
          other
                                                                                 -13,000 -55,000 82,000 -3,000 -11,000 
          decrease (increase) in restricted cash
                                                                                       
          proceeds from the issuance of unsecured senior notes
                                                                                       
          proceeds from issuance of exchangeable senior notes
                                                                                       
          cost of capped call options on common stock
                                                                                     
          decrease (increase) in loan deposit and other
                                                                                       
          noncash amortization of net above market rents
                                                                                       
          changes in operating assets and liabilities:
                                                                                       
          marketable securities
                                                                441,000 -229,000 -523,000 -421,000 -394,000 139,000 -774,000 -223,000 -428,000 -409,000 -504,000 355,000 163,000 -168,000 -1,531,000 -252,000        
          current receivables
                                                                -2,402,000 -36,000 1,416,000 -2,332,000 -1,189,000 186,000 297,000 -602,000 -437,000 839,000 1,811,000 -1,479,000 -823,000 878,000 -113,000 -1,243,000 595,000 2,408,000 -1,034,000 -3,127,000 724,000 2,373,000 -908,000 
          deferred rent receivables
                                                                -6,637,000 -4,566,000 -4,340,000 -5,175,000 -3,020,000 -3,407,000 -2,014,000 -1,438,000 -1,268,000 -1,259,000 -2,946,000 -2,699,000 2,109,000 -1,332,000 -1,315,000 -2,242,000 -3,558,000 -314,000 -1,012,000 -1,395,000 -1,956,000 -871,000 -3,007,000 
          other deferred leasing costs
                                                                137,000 201,000 197,000 121,000 78,000                   
          prepaid expenses and other assets
                                                                -9,000 -613,000 -2,906,000 583,000 226,000 77,000 -3,068,000 1,027,000 459,000 1,721,000 -4,104,000 1,087,000 880,000 332,000 -2,927,000 621,000 290,000 368,000 -2,031,000 457,000 154,000 -218,000 -2,559,000 
          accounts payable, accrued expenses and other liabilities
                                                                25,298,000 -22,307,000 15,923,000 -10,122,000 7,226,000 -7,552,000 3,375,000 4,239,000 8,570,000 -7,366,000 -1,069,000 -4,563,000 9,662,000 -3,687,000 -2,248,000 -3,150,000 8,864,000 4,493,000 -312,000 -727,000 5,013,000 -1,120,000 -73,649,000 
          deferred revenue
                                                                -21,000 -276,000 -301,000 -3,923,000 5,039,000 494,000 13,000 -29,000 145,000 150,000 -941,000 2,350,000 2,032,000 1,048,000 822,000         
          rents received in advance and tenant security deposits
                                                                1,252,000 1,684,000 -2,756,000 10,120,000 -6,780,000 2,195,000 5,424,000 -151,000 -3,657,000 2,892,000 -194,000 555,000 -1,601,000 -313,000 2,266,000 571,000 341,000       
          net increase in escrow deposits
                                                                5,500,000                       
          proceeds from issuance of unsecured debt
                                                                                      
          supplemental cash flows information:
                                                                                       
          cash paid for interest, net of capitalized interest of 3,327 and 4,055 as of june 30, 2011 and 2010, respectively
                                                                                       
          noncash investing transactions:
                                                                                       
          accrual for expenditures for operating properties and development and redevelopment properties
                                                                 5,213,000 4,753,000                     
          tenant improvements funded directly by tenants to third parties
                                                                 227,000 2,800,000                     
          assumption of secured debt with property acquisition
                                                                                       
          assumption of other liabilities with property acquisitions
                                                                                       
          noncash financing transactions:
                                                                                       
          accrual of dividends and distributions payable to common stockholders and common unitholders
                                                                 2,114,000 18,950,000                    17,323,000 
          accrual of dividends and distributions payable to preferred stockholders and preferred unitholders
                                                                 1,909,000                    1,909,000 
          issuance of share-based compensation awards
                                                                 784,000 6,432,000                     
          exchange of common units of the operating partnership into shares of the company’s common stock
                                                                                      21,504,000 
          noncash amortization of deferred financing costs and debt discounts
                                                                  3,450,000                     
          increase in escrow deposits
                                                                  -5,000,000    -3,000,000             -500,000   
          cash paid for interest, net of capitalized interest of 1,620 and 1,902 as of march 31, 2011 and 2010, respectively
                                                                  6,965,000                     
          insurance proceeds received for property casualty loss
                                                                                       
          increase in loan deposit
                                                                                       
          noncash amortization of deferred financing costs and exchangeable debt discounts
                                                                    3,348,000 2,826,000 2,924,000                 
          noncash amortization of above/(below) market rents
                                                                                       
          changes in assets and liabilities:
                                                                                       
          expenditures for development and redevelopment properties
                                                                    -6,568,000 -3,751,000 -4,362,000  -4,175,000 -5,551,000 -5,403,000  -18,449,000 -18,056,000 -19,670,000         
          decrease in loan deposit
                                                                                      
          net decrease in cash and cash equivalents
                                                                          6,703,000  5,688,000 -514,000 -6,851,000         
          noncash amortization of above/below market rents
                                                                     60,000 -28,000 -10,000                
          proceeds paid for acquisition of operating properties
                                                                                       
          deferred leasing costs
                                                                      -1,776,000 -563,000 -166,000 -147,000 -137,000 -103,000 756,000 -288,000 -381,000      -519,000 -288,000 -319,000 
          acquisition of operating property
                                                                      -17,950,000                 
          increase in provision for uncollectible tenant receivables
                                                                       505,000 243,000 131,000 27,000 384,000 8,000 3,000 280,000 483,000 -111,000       
          increase in provision for uncollectible deferred rent receivables
                                                                       -331,000 -1,403,000 1,397,000 -1,000 1,000 3,201,000 175,000         
          acquisitions of redevelopment properties and undeveloped land
                                                                                       
          proceeds received from completion of section 1031 exchange
                                                                                       
          proceeds from termination of profit participation agreement
                                                                                      
          decrease in escrow deposits
                                                                               3,000,000     
          proceeds from sales of marketable securities
                                                                                      
          noncash amortization of deferred financing costs and debt discount
                                                                                       
          noncash amortization of deferred revenue related to tenant improvements
                                                                                       
          insurance proceeds received for a property casualty loss
                                                                                      
          receipt of principal payments on notes receivable
                                                                        37,000               
          non-cash amortization of deferred financing costs and debt discount
                                                                         2,548,000 2,470,000 819,000 760,000 784,000 803,000         
          non-cash amortization of above/below market rents
                                                                         -151,000 -149,000 -149,000 -149,000 -163,000 -172,000         
          non-cash amortization of deferred revenue related to tenant improvements
                                                                         -2,821,000 -2,321,000  -5,125,000 -1,950,000 -1,832,000         
          distributions on cumulative redeemable preferred units
                                                                           1,397,000 1,397,000 1,397,000 1,397,000 1,397,000 1,397,000 1,397,000 1,397,000 1,397,000 1,397,000 1,397,000 1,397,000 
          minority interests in earnings of operating partnership
                                                                           273,000 870,000 375,000 664,000 4,494,000 624,000 906,000 1,143,000 515,000 2,513,000 1,557,000 1,405,000 
          net gain on dispositions of operating properties
                                                                             -61,031,000 -4,848,000 -8,626,000 -25,604,000 -5,655,000 
          non-cash lease termination fee
                                                                                      
          loss on derivative instruments
                                                                                       
          net settlement receipts on interest rate swaps
                                                                                       
          proceeds received from 1031 exchange completion
                                                                               43,794,000     
          net cash settlement receipts on interest rate swaps
                                                                                       
          net borrowings (repayments) on unsecured line of credit
                                                                           15,000,000 78,000,000          92,500,000 
          proceeds from issuance of exchangeable senior notes, net of discount
                                                                                     
          acquisition of redevelopment property and undeveloped land
                                                                                -68,970,000     
          non-cash amortization of nonvested shares of common stock
                                                                              3,490,000         
          net borrowings on unsecured line of credit
                                                                              26,000,000    55,000,000     
          non-cash amortization of deferred financing costs
                                                                               867,000 852,000 824,000 352,000 306,000 305,000 278,000 326,000 
          casualty loss on operating property
                                                                                       
          acquisitions of development and redevelopment properties and undeveloped land
                                                                                       
          acquisitions of operating properties
                                                                                       
          proceeds received from termination of profit participation agreement
                                                                                       
          insurance proceeds received for casualty loss
                                                                                       
          net (repayments) borrowings on unsecured line of credit
                                                                               59,000,000        
          supplemental cash flow information:
                                                                                       
          cash paid for interest, net of capitalized interest of 16,760, 10,898, and 8,457 at december 31, 2007, 2006 and 2005, respectively
                                                                                       
          non-cash amortization of nonvested stock
                                                                                3,730,000 3,913,000 3,474,000     
          amortization of above/below market rents
                                                                                -229,000 -375,000 -316,000 -457,000 -458,000 -347,000 -308,000 
          amortization of deferred revenue related to tenant improvements
                                                                                -1,299,000       
          deferred leasing costs and acquisition related intangibles
                                                                                -336,000 -274,000 -694,000     
          deferred revenue and acquisition related liabilities
                                                                                1,474,000 89,000 5,566,000     
          expenditures for development, redevelopment projects and undeveloped land
                                                                                -45,287,000 -61,451,000 -47,683,000  -29,468,000   
          collections of principal on the note receivable
                                                                                32,000 31,000 31,000 30,000 29,000 29,000 29,000 
          proceeds from issuance of common stock
                                                                                       
          non-cash gain on lease termination
                                                                                     
          net repayments on unsecured line of credit
                                                                                       
          provision for uncollectible tenant receivables
                                                                                  -172,000     
          provision for uncollectible deferred rent receivables
                                                                                       
          non-cash amortization of deferred revenue for reimbursement of tenant improvements
                                                                                  -641,000 -596,000 -585,000 -566,000 -566,000 
          rents received in advance, tenant security deposits
                                                                                  1,464,000     
          impairment loss on property held for sale
                                                                                       
          increase in benefit from uncollectible tenant receivables
                                                                                     72,000 271,000 
          increase in benefit from uncollectible deferred rent receivables
                                                                                     -16,000 257,000 
          non-cash amortization of nonvested stock grants
                                                                                   3,060,000    
          non-cash charge for original issuance costs of redeemed preferred units
                                                                                       
          gain on derivative instruments
                                                                                     179,000 76,000 
          net settlement (receipts) payments on interest rate swaps
                                                                                     -254,000 -194,000 
          expenditures for development and redevelopment projects and undeveloped land
                                                                                      -19,878,000 
          acquisitions of operating properties and undeveloped land
                                                                                       
          net cash settlement receipts (payments) on interest rate swaps
                                                                                     246,000 186,000 
          proceeds from issuance of unsecured senior notes
                                                                                       
          net proceeds from issuance of preferred stock
                                                                                       
          redemption of preferred units
                                                                                       
          cash paid for interest, net of capitalized interest of 10,898, 8,457, and 7,111 at december 31, 2006, 2005 and 2004, respectively
                                                                                       
          rents received in advance, tenant security deposits and other deferred revenue
                                                                                    -689,000 3,593,000 4,426,000 
          acquisition of operating property and undeveloped land
                                                                                       
          non-cash amortization of nonvested restricted stock grants
                                                                                     774,000 814,000 
          cash paid for interest, net of capitalized interest of 1,994 and 1,932 at march 31, 2006 and 2005, respectively
                                                                                      13,611,000 
          non-cash investing and financing transactions:
                                                                                       
          issuance of nonvested restricted shares of common stock
                                                                                      5,773,000 
          accrual for expenditures for operating properties and development and redevelopment projects
                                                                                      6,902,000 
          benefit from uncollectible tenant receivables
                                                                                       
          benefit from uncollectible deferred rent receivables
                                                                                       
          non-cash amortization of restricted stock grants
                                                                                       
          amortization of deferred financing costs
                                                                                       
          acquisition of operating properties and undeveloped land
                                                                                       
          distributions paid to common stockholders and common unitholders
                                                                                       
          distributions paid to preferred stockholders and preferred unitholders
                                                                                       
          cash paid for interest, net of capitalized interest of 8,457, 7,111 and 9,641 at december 31, 2005, 2004 and 2003, respectively
                                                                                       
          accrual of distributions payable to common stockholders and common unitholders
                                                                                       
          accrual of distributions payable to preferred stockholders and preferred unitholders
                                                                                       
          issuance of restricted stock
                                                                                       
          note receivable received in connection with the disposition of an operating property