7Baggers

Extra Space Storage Inc
(NYSE:EXR) 

EXR stock logo

Extra Space Storage Inc., headquartered in Salt Lake City, Utah, is a self-administered and self-managed REIT and a member of the S&P 500. As of September 30, 2020, the Company owned and/or operated 1,906 self-storage stores in 40 states, Washington, D.C. and Puerto Rico. The Company's stores compri...

Founded: 1977
Full Time Employees: 4,048
Sector: Real Estate
Industry: REIT-Industrial

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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 2013-09-30 2013-06-30 2013-03-31 2012-09-30 2012-06-30 2012-03-31 2011-09-30 2011-06-30 2011-03-31 2010-09-30 2010-06-30 2010-03-31 2009-09-30 2009-06-30 2009-03-31 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 2004-12-31 2004-09-30 2004-06-30 
                                                                                      
      revenues:
                                                                                      
      property rental
    733,213,000 734,225,000 735,581,000 721,004,000 704,380,000 707,234,000 710,874,000 697,100,000 688,044,000 696,982,000 650,887,000 440,747,000 433,962,000 438,096,000 428,787,000 408,044,000 379,808,000 364,542,000 351,355,000 321,500,000 303,593,000 301,084,000 290,423,000 279,312,000 286,703,000 288,673,000 290,917,000 279,584,000 271,003,000 266,598,000 266,728,000 258,128,000 247,886,000 246,351,000 248,589,000 240,796,000 231,493,000 229,012,000 224,451,000 211,791,000 199,488,000 195,672,000 170,548,000 161,024,000 148,894,000 144,420,000 144,669,000 138,778,000 132,001,000 113,881,000 107,340,000 102,923,000 94,065,000 79,284,000 75,844,000 69,475,000 64,300,000 61,490,000 59,332,000 56,786,000 56,143,000 60,380,000 58,705,000 59,409,000 59,997,000 57,885,000 57,024,000 37,458,000 55,209,000 48,392,000 46,231,000 45,116,000 44,682,000 42,020,000 39,175,000 20,571,500 36,245,000 23,819,000 22,222,000    
      tenant reinsurance
    89,119,000 89,251,000 90,341,000 88,572,000 84,712,000 83,695,000 84,048,000 83,705,000 81,347,000 70,415,000 69,128,000 48,433,000 47,704,000 47,438,000 47,869,000 46,427,000 43,797,000 43,897,000 44,258,000 42,334,000 39,619,000 38,576,000 39,294,000 35,078,000 33,613,000 33,301,000 33,588,000 31,701,000 29,797,000 29,847,000 30,105,000 28,521,000 27,034,000 25,351,000 25,882,000 24,313,000 22,855,000 22,355,000 22,727,000 21,654,000 20,555,000 19,895,000 18,226,000 17,340,000 16,510,000 15,716,000 15,385,000 14,508,000 13,463,000 12,294,000 12,110,000 10,221,000 9,495,000 9,008,000 8,557,000 8,269,000 7,596,000 7,024,000 6,796,000 6,338,000 5,892,000 5,542,000 5,085,000 4,619,000 4,265,000 3,980,000                 
      management fees and other income
    33,695,000 33,991,000 32,538,000 32,042,000 30,905,000 30,967,000 29,882,000 29,858,000 30,148,000 30,377,000 28,019,000 22,206,000 21,384,000 21,184,000 22,246,000 20,517,000 19,957,000 18,944,000 16,879,000 14,796,000 15,645,000 13,830,000 13,307,000 12,856,000 12,136,000 13,827,000 13,000,000 12,317,000 10,746,000 10,908,000 10,120,000 10,164,000 10,565,000 10,140,000 9,685,000 10,894,000 8,660,000 9,649,000 10,005,000 10,828,000 9,360,000 10,192,000 8,723,000 7,496,000 7,750,000                                      
      total revenues
    856,027,000 857,467,000 858,460,000 841,618,000 819,997,000 821,896,000 824,804,000 810,663,000 799,539,000 797,774,000 748,034,000 511,386,000 503,050,000 506,718,000 498,902,000 474,988,000 443,562,000 427,383,000 412,492,000 378,630,000 358,857,000 353,490,000 343,024,000 327,246,000 332,452,000 335,801,000 337,505,000 323,602,000 311,546,000 307,353,000 306,953,000 296,813,000 285,485,000 281,842,000 284,156,000 276,003,000 263,008,000 261,016,000 257,183,000 244,273,000 229,403,000 225,759,000 197,497,000 185,860,000 173,154,000 167,367,000 167,368,000 160,240,000 152,180,000 133,111,000 126,246,000 119,322,000 109,791,000 94,951,000 90,987,000 84,097,000 78,040,000 74,481,000 71,979,000 68,777,000 67,587,000 71,304,000 69,068,000 69,254,000 69,848,000 67,336,000 65,707,000 43,538,000 63,826,000 56,550,000 53,776,000 52,175,000 51,188,000 48,531,000 45,370,000 22,667,500 43,135,000 24,617,000 22,918,000  18,168,000 13,929,000 
      yoy
    4.39% 4.33% 4.08% 3.82% 2.56% 3.02% 10.26% 58.52% 58.94% 57.44% 49.94% 7.66% 13.41% 18.56% 20.95% 25.45% 23.60% 20.90% 20.25% 15.70% 7.94% 5.27% 1.64% 1.13% 6.71% 9.26% 9.95% 9.03% 9.13% 9.05% 8.02% 7.54% 8.55% 7.98% 10.49% 12.99% 14.65% 15.62% 30.22% 31.43% 32.48% 34.89% 18.00% 15.99% 13.78% 25.73% 32.57% 34.29% 38.61% 40.19% 38.75% 41.89% 40.69% 27.48% 26.41% 22.27% 15.47% 4.46% 4.21% -0.69% -3.24% 5.89% 5.12% 59.07% 9.44% 19.07% 22.19% -16.55% 24.69% 16.52% 18.53% 130.18% 18.67% 97.14% 97.97%  137.42% 76.73%     
      qoq
    -0.17% -0.12% 2.00% 2.64% -0.23% -0.35% 1.74% 1.39% 0.22% 6.65% 46.28% 1.66% -0.72% 1.57% 5.03% 7.08% 3.79% 3.61% 8.94% 5.51% 1.52% 3.05% 4.82% -1.57% -1.00% -0.50% 4.30% 3.87% 1.36% 0.13% 3.42% 3.97% 1.29% -0.81% 2.95% 4.94% 0.76% 1.49% 5.29% 6.48% 1.61% 14.31% 6.26% 7.34% 3.46% -0.00% 4.45% 5.30% 14.33% 5.44% 5.80% 8.68% 15.63% 4.36% 8.19% 7.76% 4.78% 3.48% 4.66% 1.76% -5.21% 3.24% -0.27% -0.85% 3.73% 2.48% 50.92% -31.79% 12.87% 5.16% 3.07% 1.93% 5.47% 6.97% 100.15% -47.45% 75.22% 7.41%   30.43%  
      expenses:
                                                                                      
      property operations
    238,303,000 231,459,000 235,486,000 227,621,000 223,582,000 221,111,000 209,035,000 196,902,000 204,518,000 195,039,000 185,194,000 114,637,000 117,166,000 112,971,000 114,577,000 104,252,000 103,542,000 94,292,000 92,794,000 89,155,000 92,367,000 88,956,000 92,322,000 89,040,000 90,297,000 87,762,000 88,653,000 80,870,000 78,765,000 72,207,000 73,652,000 73,083,000 72,753,000 67,604,000 70,430,000 67,295,000 66,645,000 64,122,000 62,341,000 62,430,000 61,112,000 59,634,000 48,878,000 48,209,000 47,244,000 43,346,000 43,294,000 42,294,000 43,482,000 34,376,000 33,462,000 34,437,000 30,115,000 26,012,000 26,596,000 24,270,000 22,712,000 23,344,000 21,334,000 20,941,000 21,956,000 23,022,000 21,567,000 22,867,000 21,367,000 20,863,000 20,641,000 13,463,750 19,607,000 17,352,000 16,896,000 15,640,000 16,613,000 15,248,000 14,742,000 7,821,250 13,366,000 9,041,000 8,878,000    
      general and administrative
    46,509,000 51,938,000 43,479,000 44,952,000 45,974,000 44,025,000 39,750,000 39,901,000 43,722,000 39,397,000 37,406,000 34,842,000 34,763,000 35,963,000 32,275,000 31,251,000 29,762,000 27,918,000 24,395,000 26,341,000 23,540,000 24,352,000 23,894,000 25,337,000 23,011,000 20,870,000 22,519,000 23,351,000 22,678,000 18,434,000 19,707,000 21,651,000 21,464,000 18,790,000 19,498,000 21,865,000 18,808,000 18,355,000 19,537,000 20,512,000 23,402,000 18,138,000 16,716,000 16,655,000 16,249,000 16,689,000 13,966,000 14,985,000 15,302,000 13,943,000 13,739,000 12,769,000 12,559,000 12,545,000 12,640,000 12,306,000 12,432,000 11,658,000 10,618,000 11,229,000 11,056,000 9,982,000 10,615,000 11,246,000 10,319,000 10,070,000 10,179,000 6,883,500 9,326,000 8,968,000 9,240,000 9,010,000 8,598,000 8,747,000 9,245,000 3,967,000 9,591,000 3,320,000 2,957,000    
      depreciation and amortization
    185,795,000 180,089,000 177,466,000 177,266,000 180,356,000 196,202,000 195,046,000 194,809,000 196,966,000 196,139,000 152,338,000 79,086,000 78,490,000 79,920,000 71,423,000 69,067,000 67,906,000 62,194,000 61,516,000 59,570,000 58,599,000 56,739,000 56,412,000 56,018,000 55,275,000 54,741,000 56,051,000 54,406,000 54,659,000 53,126,000 52,283,000 51,892,000 51,749,000 49,157,000 48,075,000 46,632,000 49,432,000 49,158,000 46,555,000 43,950,000 42,897,000 40,766,000 30,711,000 31,552,000 30,428,000 29,181,000 29,249,000 28,271,000 28,375,000 23,428,000 22,785,000 23,025,000 19,768,000 16,626,000 16,524,000 14,364,000 14,092,000 13,585,000 12,519,000 12,202,000 12,419,000 13,797,000 12,840,000 12,523,000 12,355,000 11,697,000 11,581,000 7,129,250 10,598,000 9,123,000 8,796,000 9,586,000 9,253,000 9,057,000 9,276,000 5,369,500 9,535,000 6,213,000 5,730,000  5,057,000 3,089,000 
      total expenses
    488,474,000 480,517,000 474,212,000 466,784,000 467,028,000 479,578,000 461,341,000 451,243,000 463,711,000 464,306,000 448,242,000 238,047,000 239,508,000 237,148,000 229,045,000 213,572,000 208,252,000 192,487,000 186,214,000 181,801,000 181,667,000 175,816,000 179,817,000 177,253,000 175,261,000 171,156,000 174,867,000 165,609,000 163,069,000 150,676,000 153,362,000 152,097,000 151,573,000 140,728,000 144,275,000 139,596,000 138,805,000 137,832,000 134,459,000 133,971,000 135,775,000 185,450,000 100,193,000 104,253,000 97,718,000 97,451,000 89,875,000 89,579,000 91,782,000 77,047,000 72,871,000 72,593,000 66,307,000 57,076,000 58,217,000 52,882,000 52,188,000 50,451,000 48,418,000 45,971,000 46,724,000 48,087,000 66,694,000 47,979,000 45,506,000 45,428,000 43,727,000 28,521,500 41,112,000 36,819,000 36,155,000 35,072,000 34,661,000 33,665,000 34,214,000 17,362,000 33,014,000 18,742,000 17,692,000  14,808,000  
      gain on real estate assets held for sale and sold
       -864,000 35,761,000                                                                              
      income from operations
    367,553,000 370,871,000 279,120,000 373,970,000 388,730,000 380,032,000 302,739,000 304,761,000 335,828,000 333,468,000 299,792,000 273,339,000 263,542,000 269,570,000 269,857,000 275,665,000 235,310,000 311,773,000 226,278,000 196,829,000 241,073,000 195,749,000 163,207,000 149,993,000 157,191,000 164,645,000 162,638,000 159,198,000 148,477,000 187,484,000 153,591,000 144,716,000 133,912,000 141,114,000 139,881,000 136,407,000 124,203,000 123,184,000 122,724,000 110,302,000 93,628,000 40,309,000 97,304,000 81,607,000 75,436,000 69,916,000 77,493,000 70,661,000 60,398,000 56,064,000 53,375,000 46,729,000 43,484,000 37,875,000 32,770,000 31,215,000 25,852,000 24,030,000 23,561,000 22,806,000 20,863,000                      
      yoy
    -5.45% -2.41% -7.80% 22.71% 15.75% 13.96% 0.98% 11.50% 27.43% 23.70% 11.09% -0.84% 12.00% -13.54% 19.26% 40.05% -2.39% 59.27% 38.64% 31.23% 53.36% 18.89% 0.35% -5.78% 5.87% -12.18% 5.89% 10.01% 10.88% 32.86% 9.80% 6.09% 7.82% 14.56% 13.98% 23.67% 32.66% 205.60% 26.12% 35.16% 24.12% -42.35% 25.56% 15.49% 24.90% 24.71% 45.19% 51.21% 38.90% 48.02% 62.88% 49.70% 68.20% 57.62% 39.09% 36.87% 23.91%                          
      qoq
    -0.89% 32.87% -25.36% -3.80% 2.29% 25.53% -0.66% -9.25% 0.71% 11.23% 9.68% 3.72% -2.24% -0.11% -2.11% 17.15% -24.53% 37.78% 14.96% -18.35% 23.15% 19.94% 8.81% -4.58% -4.53% 1.23% 2.16% 7.22% -20.81% 22.07% 6.13% 8.07% -5.10% 0.88% 2.55% 9.83% 0.83% 0.37% 11.26% 17.81% 132.28% -58.57% 19.23% 8.18% 7.90% -9.78% 9.67% 16.99% 7.73% 5.04% 14.22% 7.46% 14.81% 15.58% 4.98% 20.75% 7.58% 1.99% 3.31% 9.31%                       
      operating margin %
    42.94% 43.25% 32.51% 44.43% 47.41% 46.24% 36.70% 37.59% 42.00% 41.80% 40.08% 53.45% 52.39% 53.20% 54.09% 58.04% 53.05% 72.95% 54.86% 51.98% 67.18% 55.38% 47.58% 45.83% 47.28% 49.03% 48.19% 49.20% 47.66% 61.00% 50.04% 48.76% 46.91% 50.07% 49.23% 49.42% 47.22% 47.19% 47.72% 45.16% 40.81% 17.85% 49.27% 43.91% 43.57% 41.77% 46.30% 44.10% 39.69% 42.12% 42.28% 39.16% 39.61% 39.89% 36.02% 37.12% 33.13% 32.26% 32.73% 33.16% 30.87% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% NaN% 0% 0% 
      interest expense
    -147,299,000 -149,436,000 -149,650,000 -146,128,000 -142,399,000 -138,479,000 -142,855,000 -137,133,000 -132,887,000 -129,665,000 -122,899,000 -86,372,000 -80,099,000 -72,922,000 -56,245,000 -47,466,000 -42,538,000 -45,578,000 -39,670,000 -40,240,000 -40,695,000 -41,016,000 -42,213,000 -41,039,000 -44,358,000 -44,810,000 -46,908,000 -47,448,000 -47,360,000 -48,197,000 -45,926,000 -43,347,000 -40,966,000 -40,319,000 -39,766,000 -37,456,000 -35,970,000 -35,824,000 -33,494,000 -32,802,000 -31,359,000 -30,629,000 -20,811,000 -22,811,000 -21,431,000 -20,393,000 -20,681,000                               -7,493,000 -6,239,000  -9,741,000 -8,406,000 
      non-cash interest expense related to amortization of discount on unsecured senior notes
    -12,555,000 -12,350,000 -12,086,000 -11,770,000                                                                               
      interest income
    39,543,000 38,649,000 43,588,000 41,998,000 38,967,000 34,676,000 34,947,000 31,226,000 23,573,000 22,250,000 22,092,000 21,077,000 19,438,000 17,248,000 18,125,000 15,060,000 18,989,000 12,832,000 11,729,000 12,838,000 12,304,000 8,704,000 3,145,000 1,669,000 1,674,000 1,562,000 2,799,000 1,718,000 1,388,000 1,295,000 1,371,000 1,188,000 1,438,000 1,004,000 869,000 826,000 1,102,000 1,451,000 1,358,000 1,625,000 1,714,000 1,821,000 356,000 428,000 856,000 440,000 186,000 712,000 269,000 202,000 133,000 184,000 461,000 448,000 275,000 185,000 189,000 182,000 178,000 211,000 325,000 245,000 321,000 532,000 1,280,000 870,000 425,000 1,734,250 1,821,000 3,668,000 1,448,000 1,664,000 175,000 148,000 482,000 216,250 789,000      
      income before equity in earnings and dividend income from unconsolidated real estate entities and income tax expense
    247,242,000 247,734,000 160,972,000 258,070,000 273,985,000 265,072,000 183,826,000 188,001,000 215,809,000 215,495,000 190,757,000 208,044,000 202,881,000                                                                      
      equity in earnings and dividend income from unconsolidated real estate entities
    15,760,000 16,931,000 15,669,000 16,284,000 19,931,000 18,764,000 16,246,000 17,255,000 15,007,000 16,233,000 15,043,000 13,254,000 10,305,000 10,992,000 11,149,000 10,190,000 9,097,000 8,825,000 8,255,000 8,322,000 6,956,000 6,669,000 5,605,000 5,044,000 5,043,000                                                          
      equity in earnings of unconsolidated real estate ventures - gain on sale of a joint venture interest
    207,000                                                                                  
      income tax expense
    -10,789,000 -8,968,000 -11,962,000 -11,638,000 -8,991,000 -6,035,000 -10,857,000 -9,844,000 -6,742,000 -4,321,000 -6,944,000 -5,986,000 -4,308,000 -5,409,000 -6,760,000 -5,615,000 -3,141,000 -3,994,000 -6,772,000 -5,421,000 -4,137,000 -3,797,000 -4,657,000 -3,177,000 -2,179,000 -2,728,000 -4,052,000 -2,715,000 -1,813,000 -3,167,000 -2,638,000 -2,097,000 -1,342,000 5,529,000 -3,163,000 -2,867,000 -3,124,000 -4,843,000 -4,466,000 -3,773,000 -2,765,000   -2,185,000 -2,248,000           62,000                           
      net income
    252,420,000 300,864,000 174,033,000 262,716,000 284,925,000 277,801,000 202,945,000 195,412,000 224,074,000 227,407,000 198,856,000 215,312,000 208,878,000 219,479,000 236,126,000 247,834,000 217,717,000 283,858,000 199,820,000 178,579,000 215,501,000 166,309,000 123,854,000 111,257,000 116,162,000 120,279,000 115,995,000 112,689,000 102,160,000 109,250,000 139,687,000 102,713,000 95,430,000 229,315,000 101,075,000 94,098,000 89,734,000 90,416,000 127,226,000 90,040,000 89,407,000 11,744,000 78,200,000 60,956,000 58,636,000 49,486,000 59,193,000 46,008,000 41,209,000 32,352,000 37,101,000 33,931,000 41,553,000 24,745,000 22,518,000 17,352,000 12,517,000 10,140,000 9,482,000 7,925,000 5,179,000 7,574,000  30,762,000 12,327,000 8,901,000 6,700,000 6,625,750 11,338,000 8,695,000 6,470,000 6,739,000 4,307,000 3,092,000 738,000 -1,179,750 -2,859,000 -1,220,000 -640,000  -5,077,000 -7,036,000 
      yoy
    -11.41% 8.30% -14.25% 34.44% 27.16% 22.16% 2.06% -9.24% 7.28% 3.61% -15.78% -13.12% -4.06% -22.68% 18.17% 38.78% 1.03% 70.68% 61.34% 60.51% 85.52% 38.27% 6.78% -1.27% 13.71% 10.10% -16.96% 9.71% 7.05% -52.36% 38.20% 9.16% 6.35% 153.62% -20.55% 4.51% 0.37% 669.89% 62.69% 47.71% 52.48% -76.27% 32.11% 32.49% 42.29% 52.96% 59.55% 35.59% -0.83% 30.74% 64.76% 95.55% 231.97% 144.03% 137.48% 118.95% 141.69% 33.88%  -74.24% -57.99% -14.91%  364.28% 8.72% 2.37% 3.55% -1.68% 163.25% 181.21% 776.69% -671.22% -250.65% -353.44% -215.31%  -43.69% -82.66%     
      qoq
    -16.10% 72.88% -33.76% -7.79% 2.56% 36.88% 3.85% -12.79% -1.47% 14.36% -7.64% 3.08% -4.83% -7.05% -4.72% 13.83% -23.30% 42.06% 11.89% -17.13% 29.58% 34.28% 11.32% -4.22% -3.42% 3.69% 2.93% 10.31% -6.49% -21.79% 36.00% 7.63% -58.38% 126.88% 7.41% 4.86% -0.75% -28.93% 41.30% 0.71% 661.30% -84.98% 28.29% 3.96% 18.49% -16.40% 28.66% 11.65% 27.38% -12.80% 9.34% -18.34% 67.92% 9.89% 29.77% 38.63% 23.44% 6.94% 19.65% 53.02% -31.62%   149.55% 38.49% 32.85% 1.12% -41.56% 30.40% 34.39% -3.99% 56.47% 39.29% 318.97% -162.56% -58.74% 134.34% 90.63%   -27.84%  
      net income margin %
    29.49% 35.09% 20.27% 31.22% 34.75% 33.80% 24.61% 24.11% 28.03% 28.51% 26.58% 42.10% 41.52% 43.31% 47.33% 52.18% 49.08% 66.42% 48.44% 47.16% 60.05% 47.05% 36.11% 34.00% 34.94% 35.82% 34.37% 34.82% 32.79% 35.55% 45.51% 34.61% 33.43% 81.36% 35.57% 34.09% 34.12% 34.64% 49.47% 36.86% 38.97% 5.20% 39.60% 32.80% 33.86% 29.57% 35.37% 28.71% 27.08% 24.30% 29.39% 28.44% 37.85% 26.06% 24.75% 20.63% 16.04% 13.61% 13.17% 11.52% 7.66% 10.62% 0% 44.42% 17.65% 13.22% 10.20% 15.22% 17.76% 15.38% 12.03% 12.92% 8.41% 6.37% 1.63% -5.20% -6.63% -4.96% -2.79% NaN% -27.94% -50.51% 
      net income allocated to preferred operating partnership noncontrolling interests
    -673,000 -723,000 -724,000 -723,000 -724,000 -1,189,000 -1,932,000 -1,933,000 -2,208,000 -2,250,000 -2,253,000 -2,254,000 -2,254,000 -4,345,000 -4,454,000 -4,491,000 -4,333,000 -4,050,000 -3,529,000 -3,438,000 -3,680,000 -3,384,000 -3,248,000 -3,139,000 -3,111,000 -3,113,000 -3,088,000 -3,128,000 -3,163,000 -3,390,000 -3,723,000 -3,492,000 -3,390,000 -4,214,000 -3,394,000 -3,430,000 -3,951,000 -3,942,000 -4,144,000 -3,434,000 -3,180,000 -2,673,000 -3,112,000 -3,007,000 -2,926,000 -2,710,000 -2,977,000                                    
      net income allocated to operating partnership and other noncontrolling interests
    -10,770,000 -12,746,000 -7,311,000 -12,262,000 -13,326,000 -14,125,000 -7,803,000 -7,607,000 -8,754,000 -9,023,000 -8,253,000 -10,648,000 -10,320,000 -10,874,000 -10,953,000 -11,213,000 -9,805,000 -11,381,000 -8,015,000 -7,193,000 -8,823,000 -6,869,000 -5,973,000 -5,207,000 -4,872,000 -4,884,000 -4,820,000 -4,733,000 -4,227,000 -4,398,000 -5,546,000 -4,068,000 -3,784,000 -9,140,000 -3,917,000 -3,662,000 -3,501,000 -4,071,000 -4,994,000 -3,562,000 -3,635,000 -396,000 -3,370,000 -2,610,000 -1,968,000 -1,654,000 -1,988,000                                    
      net income attributable to common stockholders
    240,977,000 287,395,000 165,998,000 249,731,000 270,875,000 262,487,000 193,210,000 185,872,000 213,112,000 216,134,000 188,350,000 202,410,000 196,304,000 204,260,000 220,719,000 232,130,000 203,579,000 268,427,000 188,276,000 167,948,000 202,998,000 156,056,000 114,633,000 102,911,000 108,179,000 112,282,000 108,087,000 104,828,000 94,770,000 101,462,000 130,418,000 95,153,000 88,256,000 215,961,000 93,764,000 87,006,000 82,282,000 82,403,000 118,088,000 83,044,000 82,592,000 8,675,000 71,718,000 55,339,000 53,742,000 45,122,000 54,228,000 41,665,000 37,340,000 29,245,000 34,466,000 31,425,000 38,606,000 22,413,000 20,214,000 15,261,000 10,609,000 8,301,000 7,667,000 6,180,000 3,568,000 5,967,000  28,974,000 12,327,000                  
      earnings per common share
                                                                                      
      basic
    1,140 1,360 780 1,180 1,280 1,240 910 880 1,010 960 960 1,500 1,460 1,520 1,650 1,730 1,520 2,010 1,410 1,250 1,540 1,190 890 800 840 870 840 820 740 800 1,030 750 700 1,700 740 690 650 660 940 660 660 60 580 470 460 390 470 360 320                                  
      diluted
    1,140 1,360 780 1,180 1,280 1,240 910 880 1,010 960 960 1,500 1,460 1,520 1,650 1,730 1,510 2,000 1,400 1,250 1,530 1,210 880 800 830 870 830 810 740 790 1,020 750 700 1,690 740 690 640 670 930 660 660 50 580 470 460 380 470 360 320                                  
      weighted-average number of shares
                                                                                      
      basic
    210,896,947,000 211,850,521,000 211,963,870,000 211,940,903,000 211,850,618,000 211,575,240,000 211,698,436,000 211,584,155,000 211,283,335,000 169,216,989,000 195,324,444,000 134,832,232,000 134,511,273,000 134,050,815,000 133,913,652,000 134,192,540,000 134,180,175,000 133,374,938,000 133,809,750,000 133,756,610,000 132,007,556,000 129,541,531,000 128,862,341,000 128,932,152,000 129,288,629,000 128,203,568,000 128,776,549,000 127,585,436,000 127,037,247,000 126,087,487,000 126,466,837,000 125,874,130,000 125,772,439,000 125,967,831,000 125,717,517,000 125,673,156,000 125,605,403,000 125,087,554,000 125,752,291,000 124,914,467,000 124,754,174,000 119,816,743,000 122,644,837,000 116,861,678,000 116,117,615,000 115,713,807,000 115,726,911,000 115,653,489,000 115,438,325,000 111,231,452,000 111,137,437,000 110,809,924,000 104,252,227,000 102,107,535,000  94,314,429,000 91,439,042,000 88,045,951,000 87,484,731,000 87,367,967,000   86,397,618,000 85,940,389,000 81,736,986,000 73,420,540,000 65,825,022,000  64,901,249,000 64,439,138,000 64,058,756,000 54,998,935,000 52,501,864,000  51,593,729,000   31,858,839 31,169,950    
      diluted
    220,322,872,000 211,850,521,000 221,304,958,000 211,940,903,000 212,052,742,000 211,577,680,000 220,298,870,000 211,587,105,000 220,018,777,000 169,220,882,000 195,328,020,000 143,529,817,000 142,940,384,000 141,681,388,000 141,504,215,000 142,737,909,000 141,581,862,000 140,016,028,000 140,425,269,000 140,407,195,000 139,676,548,000 129,584,829,000 129,871,096,000 129,082,468,000 137,139,560,000 136,433,769,000 137,318,475,000 135,654,761,000 134,289,716,000 133,159,033,000 134,240,290,000 132,772,772,000 132,682,560,000 134,155,771,000 133,044,473,000 132,783,402,000 132,618,644,000 125,948,076,000 133,763,472,000 132,025,915,000 131,956,094,000 126,918,869,000 130,398,111,000 124,475,890,000 122,595,718,000 121,435,267,000 121,617,554,000 121,254,222,000 121,062,845,000 117,604,515,000 115,359,245,000 114,967,087,000 108,755,316,000 106,653,965,000  98,867,803,000 96,010,848,000 92,812,067,000 92,189,852,000 92,304,831,000   91,607,503,000 91,222,295,000 87,263,018,000 79,092,783,000 71,359,324,000  70,567,078,000 69,248,845,000 68,786,185,000 59,291,749,000 57,072,838,000  55,709,430,000   31,858,839 31,169,950    
      cash dividends paid per common share
    1,620 1,215 1,620 1,620 1,620 1,215 1,620 1,620 1,620 1,215 1,620 1,620 1,620 1,125 1,500 1,500 1,500 812.5 1,250 1,000 1,000 675 900 900 900 665 900 900 860 625 860 860 780 585 780 780 780 537.5 780 780 590 412.5 590 590 470 335 470 470 400 400 400 250 200 200 200 140 140 140 100 100 100   250 250 250 250 170 230 230 230 230 230 230 230   0.228 0.228    
      loss on real estate assets held for sale and sold
     -6,079,000 -105,128,000                                                                                
      impairment of life storage trade name
          -51,763,000                                                                            
      equity in earnings of unconsolidated real estate ventures - gain on sale of real estate assets and sale of a joint venture interest
     45,167,000 9,354,000    13,730,000                                                                            
      non-cash interest expense related to amortization of discount on life storage unsecured senior notes
        -11,313,000 -11,157,000 -11,005,000 -10,853,000 -10,705,000 -10,558,000 -8,228,000                                                                        
      life storage merger transition costs
             12,558,000 54,174,000                                                                        
      loss on real estate assets held for sale
         -15,905,000 -8,961,000 -54,659,000                                                                           
      transaction costs
                                                                                      
      gain on real estate transactions
                   14,249,000  76,877,000   63,883,000     301,250  1,205,000                                                       
      transaction related costs
                 83,000  1,465,000                                                                   
      income before equity in earnings and dividend income from unconsolidated real estate ventures and income tax expense
                 171,689,250 231,737,000 243,259,000 211,761,000 279,027,000 198,337,000 169,427,000 212,682,000                                                              
      equity in earnings of unconsolidated real estate ventures - gain on sale of real estate assets and purchase of joint venture partner's interest
                       6,251,000                                                               
      non-cash interest expense related to amortization of discount on equity component of exchangeable senior notes
                          -1,233,000 -1,233,000 -1,209,000 -1,209,000 -1,186,000 -1,185,000 -1,162,000 -1,162,000 -1,140,000 -1,176,000 -1,209,000 -1,276,000 -1,268,000 -1,290,000 -1,269,000 -1,264,000 -1,243,000 -1,240,000 -1,233,000 -1,112,000 -805,000 -696,000 -697,000 -679,000 -679,000                                    
      income before equity in earnings of unconsolidated real estate ventures and income tax expense
                         163,437,000 122,906,000 109,390,000  120,188,000 117,343,000 112,283,000 101,343,000 108,613,000 138,703,000 101,381,000 93,175,000 219,862,000 100,248,000 93,127,000 89,279,000 87,410,000 90,558,000 90,455,000 62,419,000 11,601,000 78,358,000 60,140,000 55,377,000 48,772,000 55,032,000 43,479,000 41,620,000 31,228,000 37,045,000                                
      income before equity in earnings of unconsolidated real estate entities and income tax expense
                            113,298,000                                                          
      equity in earnings of unconsolidated real estate ventures
                             2,819,000 2,704,000 3,121,000 2,630,000 3,804,000 3,622,000 3,429,000 3,597,000 3,924,000 3,990,000 3,838,000 3,579,000 3,082,000 3,625,000 3,358,000 2,830,000 3,297,000 3,403,000 3,001,000 2,650,000 2,741,000 2,777,000 2,604,000 2,419,000 3,405,000 2,914,000 2,623,000                               
      gain on real estate transactions and impairment of real estate
                                 7,701,750 30,807,000                                                    
      loss on real estate transactions and impairment of real estate
                                                                                      
      acquisition related costs and other
                                         2,987,000 1,933,000 3,138,000                                           
      gain on real estate transactions, earnout from prior acquisition and impairment of real estate
                                     -1,504,750  -6,019,000                                               
      interest income on note receivable from preferred operating partnership unit holder
                                     531,000 532,000 659,000 1,213,000 1,212,000 1,213,000 1,212,000 1,213,000 1,212,000 1,213,000 1,212,000 1,213,000 1,212,000 1,213,000 1,212,000 1,213,000 1,213,000 1,212,000 1,213,000 1,213,000 1,212,000 1,213,000 1,213,000 1,212,000 1,213,000 1,213,000 1,212,000 1,213,000 1,213,000 1,212,000 1,213,000 1,213,000                  
      equity in earnings of unconsolidated real estate ventures - gain on sale of real estate assets and purchase of joint venture partners' interests
                                         4,767,000 37,509,000                                            
      equity in earnings of unconsolidated real estate ventures - gain on purchase of a joint venture partner's interest
                                                                                      
      loss on earnout from prior acquisition
                                            -1,544,000                                          
      gain on real estate transactions and earnout from prior acquisition
                                         2,453,500  11,358,000                                           
      acquisition related costs
                                            4,053,000 63,698,000 280,000 4,554,000 869,000 5,941,000 436,000 1,393,000 2,056,000 2,427,000 683,000 452,000 2,486,000 469,000 609,000                            
      equity in earnings of unconsolidated real estate ventures - gain on sale of real estate assets and purchase of joint venture partners’ interests
                                            26,923,000 714,250          2,556,000                               
      gain on real estate transactions and earnout from prior acquisitions
                                              1,101,000                                        
      income tax benefit
                                             -1,998,500 -3,561,000   -1,334,250 1,006,000                                    
      gain on earnout from prior acquisitions
                                               400,000                                       
      equity in earnings of unconsolidated real estate ventures—gain on sale of real estate assets and purchase of joint venture partners’ interests
                                                2,857,000                                      
      management fees
                                                 7,231,000 7,314,000 6,954,000 6,716,000 6,936,000 6,796,000 6,178,000                          400,000 368,000  353,000 428,000 
      gain on sale of real estate and earnout from prior acquisitions
                                                  -2,500,000                                    
      loss on extinguishment of debt related to portfolio acquisition
                                                                                      
      equity in earnings of unconsolidated real estate ventures—gain on purchase of joint venture partners’ interests
                                                 954,000 378,000                                    
      gain on sale of real estate and earnout from prior acquisition
                                                                                      
      equity in earnings of unconsolidated real estate ventures - purchase of joint venture partners’ interests
                                                   3,438,000                                   
      gain on sale of real estate assets
                                                      800,000                              1,920,000  
      net income per common share
                                                                                      
      basic
                                                     260 310 280 370 220 210 160 120 90 90 70 40 70 -90 340 150 120 100 97.5 150 130 100    10   -0.04 -0.02    
      diluted
                                                     260 310 280 370 220 210 160 120 90 90 70 40 70 -90 340 150 120 100 95 150 130 100    10   -0.04 -0.02    
      non-cash interest expense related to amortization of discount on exchangeable senior notes
                                                                                      
      income before equity in earnings of real estate ventures and income tax expense
                                                       30,760,000 26,735,000 23,681,000 15,743,000 15,417,000 10,552,000 8,583,000 8,834,000 7,580,000 4,723,000                      
      management and franchise fees
                                                        6,231,000 6,659,000 6,586,000 6,353,000 6,144,000 5,967,000 5,851,000 5,653,000 5,552,000 5,191,000 5,275,000 5,219,000 5,417,000 5,343,000 5,077,000 3,880,000 5,169,000 5,143,000 5,208,000 5,186,000 5,357,000 5,181,000 5,159,000 1,332,750 4,563,000      
      equity in earnings of real estate ventures
                                                        2,854,000 2,698,000 2,296,000 1,873,000 2,376,000 1,811,000 1,736,000 1,559,000 1,501,000 1,752,000 1,641,000 1,895,000 2,015,000 1,373,000 1,222,000 923,250 1,304,000 1,192,000 1,197,000 1,127,000 1,340,000 1,087,000 1,139,000 490,000 1,355,000 288,000 317,000  404,000 433,000 
      equity in earnings of real estate ventures - gain on sale of real estate assets and purchase of joint venture partner’s interest
                                                        13,620,000                              
      weighted-average number of common shares
                                                                                      
      basic
    210,896,947,000 211,850,521,000 211,963,870,000 211,940,903,000 211,850,618,000 211,575,240,000 211,698,436,000 211,584,155,000 211,283,335,000 169,216,989,000 195,324,444,000 134,832,232,000 134,511,273,000 134,050,815,000 133,913,652,000 134,192,540,000 134,180,175,000 133,374,938,000 133,809,750,000 133,756,610,000 132,007,556,000 129,541,531,000 128,862,341,000 128,932,152,000 129,288,629,000 128,203,568,000 128,776,549,000 127,585,436,000 127,037,247,000 126,087,487,000 126,466,837,000 125,874,130,000 125,772,439,000 125,967,831,000 125,717,517,000 125,673,156,000 125,605,403,000 125,087,554,000 125,752,291,000 124,914,467,000 124,754,174,000 119,816,743,000 122,644,837,000 116,861,678,000 116,117,615,000 115,713,807,000 115,726,911,000 115,653,489,000 115,438,325,000 111,231,452,000 111,137,437,000 110,809,924,000 104,252,227,000 102,107,535,000  94,314,429,000 91,439,042,000 88,045,951,000 87,484,731,000 87,367,967,000   86,397,618,000 85,940,389,000 81,736,986,000 73,420,540,000 65,825,022,000  64,901,249,000 64,439,138,000 64,058,756,000 54,998,935,000 52,501,864,000  51,593,729,000   31,858,839 31,169,950    
      diluted
    220,322,872,000 211,850,521,000 221,304,958,000 211,940,903,000 212,052,742,000 211,577,680,000 220,298,870,000 211,587,105,000 220,018,777,000 169,220,882,000 195,328,020,000 143,529,817,000 142,940,384,000 141,681,388,000 141,504,215,000 142,737,909,000 141,581,862,000 140,016,028,000 140,425,269,000 140,407,195,000 139,676,548,000 129,584,829,000 129,871,096,000 129,082,468,000 137,139,560,000 136,433,769,000 137,318,475,000 135,654,761,000 134,289,716,000 133,159,033,000 134,240,290,000 132,772,772,000 132,682,560,000 134,155,771,000 133,044,473,000 132,783,402,000 132,618,644,000 125,948,076,000 133,763,472,000 132,025,915,000 131,956,094,000 126,918,869,000 130,398,111,000 124,475,890,000 122,595,718,000 121,435,267,000 121,617,554,000 121,254,222,000 121,062,845,000 117,604,515,000 115,359,245,000 114,967,087,000 108,755,316,000 106,653,965,000  98,867,803,000 96,010,848,000 92,812,067,000 92,189,852,000 92,304,831,000   91,607,503,000 91,222,295,000 87,263,018,000 79,092,783,000 71,359,324,000  70,567,078,000 69,248,845,000 68,786,185,000 59,291,749,000 57,072,838,000  55,709,430,000   31,858,839 31,169,950    
      equity in earnings of real estate ventures - gain on sale of real estate assets
                                                          5,429,000                            
      weighted average number of shares
                                                                                      
      basic
                                                          94,888,078,000      86,873,472,000 86,437,877,000            51,625,135,000         
      diluted
                                                          99,927,352,000      91,666,076,000 91,548,984,000            55,991,088,000         
      unrecovered development and acquisition costs
                                                           346,000 1,570,000 249,000 211,000 142,000 70,000 22,000 18,801,000 82,000 39,000 1,428,000 164,000 148,250 184,000 159,000 250,000            
      loss on sublease
                                                              2,000,000                        
      severance costs
                                                                                      
      gain on repurchase of exchangeable senior notes
                                                                  5,093,000 22,483,000                   
      net loss allocated to operating partnership and other noncontrolling interests
                                                                  509,000                    
      other income
                                                                 191,000 3,000 7,000 169,000 128,000 128,000 152,000 324,000 145,000 139,000 163,000 386,000 184,000 65,000 107,250 308,000 136,000 61,000  29,000 353,000 
      severance costs associated with wind-down of development program
                                                                  1,400,000                    
      income before interest, equity in earnings of real estate ventures, gain on repurchase of exchangeable senior notes, loss on sale of investments available for sale and income tax expense
                                                                 23,217,000 2,374,000                    
      loss on sale of investments available for sale
                                                                                      
      net income (loss) attributable to common stockholders
                                                                  -7,541,000                    
      income before interest, equity in earnings of real estate ventures, gain on repurchase of exchangeable senior notes and loss on sale of investments available for sale
                                                                   21,275,000                   
      net income allocated to preferred operating partnership
                                                                                      
      income before interest, equity in earnings of real estate ventures, loss on sale of investments available for sale, preferred operating partnership units and minority interests
                                                                    24,342,000                  
      fair value adjustment of obligation associated with preferred operating partnership units
                                                                       263,500 1,054,000              
      minority interest - operating partnership
                                                                               104,750 253,000 110,000 56,000    
      minority interests - other
                                                                    147,000 117,000 139,000 38,250 113,000 56,000             
      fixed distribution paid to preferred operating partnership unit holder
                                                                                      
      income before interest, equity in earnings of real estate ventures, loss on investments available for sale and minority interests
                                                                     21,908,000 21,980,000                
      interest income on note receivable from preferred unit holder
                                                                     1,212,000 1,213,000 320,000 1,280,000              
      tenant insurance
                                                                      3,478,000 1,964,500 3,027,000 2,688,000 2,143,000 1,710,000 716,000 971,000 921,000        
      development fees
                                                                       83,500 97,000 182,000 55,000 68,000 47,000 175,000         
      income before interest, preferred operating partnership, minority interests and equity in earnings of real estate ventures
                                                                       15,016,500 22,714,000              
      net income available to common stockholders
                                                                       6,248,250 9,828,000              
      income before interest, minority interests and equity in earnings of real estate ventures
                                                                         19,731,000 17,621,000            
      unrecovered development/acquisition costs
                                                                           63,750  24,000 318,000        
      income before interest, minority interest and equity in earnings of real estate ventures
                                                                           10,637,250 16,527,000 14,866,000 11,156,000        
      net income (loss) per common share
                                                                                      
      basic
                                                                           40 80 60         
      diluted
                                                                           32.5 70 60         
      acquisition and development fees
                                                                              50,000 224,000 367,000 262,000 267,000    
      tenant insurance income
                                                                               215,750 863,000      
      tenant insurance expense
                                                                               128,250 513,000      
      unrecovered development/acquisition costs and support payments
                                                                               71,000 9,000 168,000 107,000   186,000 
      other
                                                                               5,000   20,000    
      income before interest expense, minority interests, equity in earnings of real estate ventures and gain on sale of real estate assets
                                                                               5,305,500 10,121,000    3,360,000 1,501,000 
      minority interest - fidelity preferred return
                                                                                     -1,124,000 
      loss allocated to other minority interests
                                                                                    634,000 560,000 
      loss before gain on sale of real estate assets
                                                                                      
      preferred return on class b, c, and e units
                                                                                      
      loss on early redemption of fidelity minority interest
                                                                                    -1,478,000  
      net loss attributable to common stockholders
                                                                               -1,179,750 -2,859,000      
      net income per share
                                                                               -0.035 -0.08      
      weighted-average number of shares - basic and diluted
                                                                                37,465,700      
      cash dividends per common share
                                                                               0.171 0.228      
      income before interest expense, minority interests, equity in earnings of real estate ventures and loss on sale of real estate assets
                                                                                 5,875,000 5,226,000    
      loss before loss on sale of real estate assets
                                                                                 -1,220,000 -640,000    
      loss on sale of real estate assets
                                                                                      
      net income per share
                                                                               -0.035 -0.08      
      basic
                                                     260 310 280 370 220 210 160 120 90 90 70 40 70 -90 340 150 120 100 97.5 150 130 100    10   -0.04 -0.02    
      diluted
                                                     260 310 280 370 220 210 160 120 90 90 70 40 70 -90 340 150 120 100 95 150 130 100    10   -0.04 -0.02    
      weighted-average number of shares:
                                                                                      
      basic
    210,896,947,000 211,850,521,000 211,963,870,000 211,940,903,000 211,850,618,000 211,575,240,000 211,698,436,000 211,584,155,000 211,283,335,000 169,216,989,000 195,324,444,000 134,832,232,000 134,511,273,000 134,050,815,000 133,913,652,000 134,192,540,000 134,180,175,000 133,374,938,000 133,809,750,000 133,756,610,000 132,007,556,000 129,541,531,000 128,862,341,000 128,932,152,000 129,288,629,000 128,203,568,000 128,776,549,000 127,585,436,000 127,037,247,000 126,087,487,000 126,466,837,000 125,874,130,000 125,772,439,000 125,967,831,000 125,717,517,000 125,673,156,000 125,605,403,000 125,087,554,000 125,752,291,000 124,914,467,000 124,754,174,000 119,816,743,000 122,644,837,000 116,861,678,000 116,117,615,000 115,713,807,000 115,726,911,000 115,653,489,000 115,438,325,000 111,231,452,000 111,137,437,000 110,809,924,000 104,252,227,000 102,107,535,000  94,314,429,000 91,439,042,000 88,045,951,000 87,484,731,000 87,367,967,000   86,397,618,000 85,940,389,000 81,736,986,000 73,420,540,000 65,825,022,000  64,901,249,000 64,439,138,000 64,058,756,000 54,998,935,000 52,501,864,000  51,593,729,000   31,858,839 31,169,950    
      diluted
    220,322,872,000 211,850,521,000 221,304,958,000 211,940,903,000 212,052,742,000 211,577,680,000 220,298,870,000 211,587,105,000 220,018,777,000 169,220,882,000 195,328,020,000 143,529,817,000 142,940,384,000 141,681,388,000 141,504,215,000 142,737,909,000 141,581,862,000 140,016,028,000 140,425,269,000 140,407,195,000 139,676,548,000 129,584,829,000 129,871,096,000 129,082,468,000 137,139,560,000 136,433,769,000 137,318,475,000 135,654,761,000 134,289,716,000 133,159,033,000 134,240,290,000 132,772,772,000 132,682,560,000 134,155,771,000 133,044,473,000 132,783,402,000 132,618,644,000 125,948,076,000 133,763,472,000 132,025,915,000 131,956,094,000 126,918,869,000 130,398,111,000 124,475,890,000 122,595,718,000 121,435,267,000 121,617,554,000 121,254,222,000 121,062,845,000 117,604,515,000 115,359,245,000 114,967,087,000 108,755,316,000 106,653,965,000  98,867,803,000 96,010,848,000 92,812,067,000 92,189,852,000 92,304,831,000   91,607,503,000 91,222,295,000 87,263,018,000 79,092,783,000 71,359,324,000  70,567,078,000 69,248,845,000 68,786,185,000 59,291,749,000 57,072,838,000  55,709,430,000   31,858,839 31,169,950    
      property rental revenues
                                                                                    17,536,000 13,014,000 
      acquisition fees and development fees
                                                                                    250,000 134,000 
      property operating expenses
                                                                                    6,846,000 5,880,000 
      general and administrative expense
                                                                                    2,905,000 3,273,000 
      loss on debt extinguishments
                                                                                    -951,000  
      minority interest—fidelity preferred return
                                                                                    -916,000  
      minority interest—operating partnership
                                                                                    213,000  
      return earned on class b, c and e units
                                                                                    -1,465,000  
      net loss attributable to common shareholders
                                                                                    -8,020,000  
      basic loss per share
                                                                                    -0.53  
      diluted loss per share
                                                                                    -0.53  
      weighted-average basic shares outstanding
                                                                                   15,282,725 15,241,832  
      weighted-average diluted shares outstanding
                                                                                   15,282,725 15,241,832  
      total operating expenses
                                                                                     12,428,000 
    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 2013-09-30 2013-06-30 2013-03-31 2012-09-30 2012-06-30 2012-03-31 2011-09-30 2011-06-30 2011-03-31 2010-09-30 2010-06-30 2010-03-31 2009-09-30 2009-06-30 2009-03-31 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 2004-12-31 2004-09-30 2004-06-30 
                                                                                        
        assets:
                                                                                        
        real estate assets
      24,926,765,000 25,004,350,000 24,926,700,000 25,099,810,000 24,683,924,000 24,587,627,000 24,385,492,000 24,340,817,000 24,494,676,000 24,555,873,000 24,556,678,000 10,017,351,000 9,991,446,000 9,997,978,000 9,877,080,000 9,135,464,000 8,940,724,000 8,834,649,000 8,272,671,000 8,113,074,000 7,944,395,000 7,893,802,000 7,755,947,000 7,673,724,000 7,689,621,000 7,696,864,000 7,665,567,000 7,667,033,000 7,688,617,000 7,491,831,000 7,425,806,000 7,390,080,000 7,171,599,000 7,132,431,000 6,770,086,000 6,782,788,000 6,770,593,000 6,770,447,000 6,458,763,000 6,164,787,000 5,933,959,000 5,689,309,000 4,452,251,000 4,452,046,000 4,197,853,000 4,135,696,000 3,954,759,000 3,941,042 3,862,679,000 3,223,672,000 3,027,654,000 2,995,510,000 2,741,945,000 2,278,331,000 2,266,536,000                   1,322,527,000 1,251,315,000  1,200,509,000 763,569,000 755,427,000    
        real estate assets - operating lease right-of-use assets
      737,606,000 732,176,000 732,103,000 720,357,000 685,393,000 689,803,000 694,001,000 218,823,000 222,940,000 227,241,000 248,483,000 220,090,000 226,483,000 221,725,000 226,984,000 232,045,000 236,961,000 227,949,000 229,184,000 233,929,000 238,927,000 252,172,000 256,154,000 261,304,000 259,681,000 264,643,000 269,318,000 221,479,000 94,198,000                                                      
        investments in unconsolidated real estate entities
      1,069,602,000 1,066,783,000 1,063,969,000 1,088,983,000 1,320,849,000 1,332,338,000 1,060,213,000 1,065,155,000 1,066,032,000 1,071,617,000 1,077,548,000 747,775,000 600,617,000 582,412,000 568,691,000 544,771,000 475,291,000 457,326,000 373,765,000 361,228,000 413,503,000 397,444,000 347,786,000 344,177,000 342,404,000 338,054,000                                                         
        investments in debt securities and notes receivable
      1,758,534,000 1,806,526,000 1,851,094,000 1,849,068,000 1,675,464,000 1,550,950,000 1,338,619,000 1,442,681,000 1,058,506,000 904,769,000 891,311,000 891,190,000 863,913,000 858,049,000 658,663,000 702,354,000 694,107,000 719,187,000 606,115,000 568,781,000 543,725,000 593,810,000                                                             
        cash and cash equivalents
      138,986,000 138,920,000 111,931,000 125,045,000 119,559,000 138,222,000 88,931,000 76,973,000 50,816,000 99,062,000 216,121,000 50,644,000 47,951,000 92,868,000 86,991,000 58,729,000 65,978,000 71,126,000 65,565,000 56,006,000 60,330,000 109,124,000 74,803,000 56,397,000 93,297,000 65,746,000 62,277,000 47,667,000 38,988,000 57,496,000 45,378,000 49,194,000 35,527,000 55,683,000 63,732,000 31,648,000 29,311,000 43,858,000 18,692,000 41,058,000 49,753,000 75,799,000 1,115,532,000 175,893,000 45,304,000 47,663,000 49,216,000 53,945 47,015,000 81,699,000 206,932,000 35,575,000 43,608,000 185,502,000 37,575,000 33,895,000 35,187,000 42,555,000 21,798,000 28,354,000 108,740,000 100,992,000 131,551,000 54,478,000 112,076,000 185,837,000 21,010,000  41,830,000 45,790,000 35,111,000 70,801,000 151,686,000 4,250,000 11,061,000  7,093,000 95,042,000 12,286,000 24,329,000   
        other assets
      467,877,000 515,291,000 547,172,000 484,748,000 508,729,000 548,986,000 495,861,000 617,631,000 587,150,000 597,700,000 635,677,000 438,403,000 402,259,000 414,426,000 414,873,000 353,967,000 172,001,000 159,172,000 145,342,000 126,331,000 133,267,000 130,611,000 320,643,000 188,938,000 159,850,000 162,083,000 141,388,000 272,083,000 141,842,000 158,131,000 191,850,000 165,207,000 181,093,000 163,724,000 152,730,000 122,293,000 136,586,000 167,076,000 153,091,000 137,860,000 170,741,000 170,349,000 118,737,000 93,572,000 96,900,000 96,014,000 97,200,000 93,818 95,479,000 81,682,000 72,572,000 66,656,000 71,786,000 65,571,000 54,001,000 54,390,000 50,856,000 47,763,000 49,047,000 47,173,000 50,395,000 47,725,000 42,486,000 40,996,000 37,153,000 35,777,000 36,663,000  35,253,000 35,640,000 34,367,000 33,356,000 31,204,000 28,753,000 30,896,000  34,080,000 26,266,000 15,555,000 14,143,000 14,019,000 11,259,000 
        total assets
      29,099,370,000 29,264,046,000 29,232,969,000 29,368,011,000 28,993,918,000 28,847,926,000 28,063,117,000 27,762,080,000 27,480,120,000 27,456,262,000 27,625,818,000 12,365,453,000 12,132,669,000 12,167,458,000 11,840,645,000 11,038,767,000 10,591,750,000 10,474,477,000 9,708,359,000 9,463,092,000 9,336,612,000 9,395,848,000 8,761,104,000 8,529,894,000 8,549,486,000 8,532,377,000 8,318,430,000 8,390,719,000 8,132,514,000 7,847,978,000 7,798,690,000 7,721,949,000 7,470,624,000 7,455,137,000 7,086,955,000 7,037,463,000 7,034,357,000 7,091,446,000 6,742,056,000 6,458,998,000 6,291,419,000 6,071,407,000 6,002,836,000 4,833,750,000 4,464,145,000 4,402,107,000 4,225,895,000 4,208,890 4,123,491,000 3,518,239,000 3,432,616,000 3,229,096,000 3,012,922,000 2,708,343,000 2,523,136,000 2,374,228,000 2,310,857,000 2,253,117,000 2,175,150,000 2,179,115,000 2,237,462,000 2,369,150,000 2,382,444,000 2,303,736,000 2,243,686,000 2,249,277,000 2,049,284,000  2,019,575,000 1,983,939,000 1,951,610,000 1,669,825,000 1,668,536,000 1,477,969,000 1,428,268,000  1,429,555,000 901,910,000 797,153,000 748,484,000 737,600,000 584,453,000 
        liabilities, noncontrolling interests and equity:
                                                                                        
        secured notes payable
      1,076,443,000 1,079,565,000 1,042,178,000 1,126,237,000 999,062,000 1,010,541,000 1,011,705,000 1,265,981,000 1,269,752,000                                                                          
        unsecured term loans
      1,495,012,000 1,494,659,000 1,494,914,000 1,948,801,000 1,948,161,000 2,192,507,000 2,194,894,000 2,252,872,000 2,251,714,000 2,650,581,000 3,247,076,000 2,248,840,000 2,672,668,000 2,340,116,000 2,339,419,000 1,742,995,000 1,742,459,000 1,741,926,000                                                                 
        unsecured senior notes
      9,446,570,000 9,432,427,000 9,423,613,000 8,618,943,000 8,616,517,000 7,756,968,000 7,437,231,000 7,028,452,000 7,016,085,000 6,410,618,000 5,805,448,000 3,695,200,000 3,258,329,000 2,757,791,000 2,757,285,000 2,757,158,000 2,756,644,000 2,360,066,000                                                                 
        revolving lines of credit and commercial paper
      1,152,500,000 1,224,000,000 942,000,000 1,211,000,000 978,000,000 1,362,000,000                                                                             
        operating lease liabilities
      769,688,000 761,106,000 757,807,000 742,847,000 704,730,000 705,845,000 706,491,000 229,035,000 232,682,000 236,515,000 242,441,000 228,343,000 234,255,000 229,035,000 233,832,000 238,392,000 242,842,000 233,356,000 234,118,000 238,411,000 242,952,000 263,485,000 267,093,000 271,875,000 270,174,000 274,783,000 279,049,000 230,816,000 103,578,000                                                      
        cash distributions in unconsolidated real estate ventures
      74,288,000 73,701,000 77,705,000 76,827,000 76,097,000 75,319,000 74,173,000 73,133,000 71,988,000 71,069,000 69,445,000 69,183,000 68,284,000 67,352,000 66,141,000 65,377,000 64,506,000 63,582,000 63,196,000 62,704,000 62,089,000 47,126,000 46,527,000 46,100,000 45,712,000 45,264,000 45,143,000 45,081,000 44,570,000 45,197,000 44,218,000 43,737,000 43,273,000                                                  
        accounts payable and accrued expenses
      374,814,000 357,583,000 472,831,000 438,062,000 359,495,000 346,519,000 388,757,000 381,941,000 338,027,000 334,518,000 430,124,000 212,416,000 178,156,000 171,680,000 191,183,000 171,918,000 136,856,000 142,285,000 164,674,000 150,091,000 129,044,000 130,012,000 153,838,000 132,257,000 116,069,000 111,382,000 122,658,000 115,056,000 99,302,000 101,461,000 126,539,000 107,252,000 108,931,000 96,087,000 114,247,000 92,678,000 77,106,000 101,388,000 102,470,000 91,188,000 77,108,000 82,693,000 76,303,000 69,378,000 71,553,000 65,521,000 73,528,000 65,539 52,886,000 58,248,000 46,982,000 45,435,000 49,609,000 47,123,000 38,029,000 39,891,000 32,712,000 34,333,000 37,445,000 32,193,000 33,898,000 40,636,000 34,462,000 33,343,000 36,484,000 33,609,000 34,787,000  33,951,000 25,363,000 6,941,000 10,840,000 6,776,000 4,486,000 7,326,000  2,952,000 1,281,000 1,619,000 3,444,000   
        other liabilities
      497,553,000 516,969,000 525,509,000 528,205,000 533,353,000 538,865,000 407,183,000 451,826,000 390,894,000 383,463,000 365,028,000 327,366,000 287,475,000 289,655,000 286,657,000 282,200,000 256,716,000 291,531,000 279,668,000 280,049,000 287,461,000 272,798,000 245,602,000 253,246,000 217,104,000 132,768,000 151,591,000 132,757,000 110,158,000 104,383,000 96,384,000 87,663,000 87,411,000 81,026,000 85,971,000 77,393,000 79,981,000 87,669,000 118,315,000 127,593,000 106,738,000 80,489,000 71,394,000 52,638,000 53,625,000 54,719,000 39,888,000 49,016 37,543,000 34,052,000 31,858,000 46,611,000 43,034,000 38,616,000 32,916,000 30,046,000 28,962,000 25,632,000 32,241,000 24,783,000 23,001,000 25,219,000 26,823,000 22,297,000 18,857,000 19,087,000 17,969,000  18,416,000 22,960,000 30,138,000 32,098,000 29,952,000 27,326,000 23,588,000  35,146,000 12,341,000 9,799,000 7,003,000 7,628,000 12,979,000 
        total liabilities
      14,886,868,000 14,940,010,000 14,736,557,000 14,690,922,000 14,215,415,000 13,988,564,000 13,104,434,000 12,631,240,000 12,191,142,000 12,042,313,000 12,059,117,000 8,330,046,000 8,099,968,000 8,089,184,000 7,771,347,000 7,145,527,000 6,713,586,000 6,688,501,000 6,325,484,000 6,102,137,000 6,021,963,000 6,459,724,000 5,993,282,000 5,784,376,000 5,774,856,000 5,610,683,000 5,410,441,000 5,561,908,000 5,358,702,000 5,062,556,000 5,028,596,000 5,006,147,000 4,753,978,000 4,731,330,000 4,513,230,000 4,458,780,000 4,448,542,000 4,495,280,000 4,212,684,000 4,015,781,000 3,866,034,000 3,698,803,000 3,615,496,000 2,410,472,000 2,557,090,000 2,490,124,000 2,292,297,000 2,278,182 2,200,307,000 1,849,359,000 1,842,825,000 1,675,944,000 1,682,770,000 1,397,700,000 1,443,394,000 1,312,159,000 1,251,913,000 1,305,974,000 1,241,118,000 1,238,346,000 1,297,155,000 1,420,415,000 1,436,470,000 1,350,699,000 1,355,019,000 1,353,367,000 1,373,748,000  1,324,887,000 1,308,911,000 1,280,379,000 991,112,000 981,922,000 982,082,000 923,708,000  1,091,902,000 572,717,000 540,501,000 483,424,000 464,600,000 532,020,000 
        commitments and contingencies
                                                                                        
        noncontrolling interests and equity:
                                                                                        
        extra space storage inc. stockholders’ equity:
                                                                                        
        preferred stock, 0.01 par value...
                                                                                        
        common stock, 0.01 par value...
      2,112,000 2,112,000 2,123,000 2,123,000 2,122,000 2,120,000 2,120,000 2,120,000 2,117,000 2,113,000 2,113,000 1,351,000 1,350,000 1,339,000 1,339,000 1,339,000 1,343,000 1,339,000 1,338,000 1,337,000 1,336,000 1,314,000 1,291,000 1,291,000 1,290,000 1,295,000 1,294,000 1,285,000 1,274,000 1,271,000 1,264,000 1,261,000 1,260,000 1,260,000 1,260,000 1,260,000 1,259,000 1,259,000 1,258,000 1,252,000 1,251,000 1,241,000 1,233,000 1,228,000 1,164,000 1,163,000 1,160,000 1,160 1,158,000 1,112,000 1,112,000 1,109,000 1,043,000 1,041,000 950,000 943,000 942,000 885,000 875,000 875,000 871,000 864,000 864,000 861,000 824,000 819,000 664,000  653,000 649,000 644,000 642,000 642,000 518,000 518,000  379,000 374,000 312,000 312,000   
        additional paid-in capital
      14,882,445,000 14,880,646,000 14,867,437,000 14,860,946,000 14,851,126,000 14,831,946,000 14,823,018,000 14,810,938,000 14,776,888,000 14,750,388,000 14,742,973,000 3,383,303,000 3,376,458,000 3,345,332,000 3,339,961,000 3,334,317,000 3,329,608,000 3,285,948,000 3,283,848,000 3,288,852,000 3,282,255,000 3,000,458,000 2,889,592,000 2,884,940,000 2,872,933,000 2,868,681,000 2,861,611,000 2,756,799,000 2,648,723,000 2,640,705,000 2,581,158,000 2,554,447,000 2,550,578,000 2,569,485,000 2,567,234,000 2,569,965,000 2,567,228,000 2,566,120,000 2,562,134,000 2,510,744,000 2,506,551,000 2,431,754,000 2,401,886,000 2,416,894,000 1,998,240,000                                      
        accumulated other comprehensive income
      314,000 -420,000 1,338,000 3,203,000 6,204,000 12,806,000 3,340,000 27,241,000 28,191,000 17,435,000 44,912,000 47,065,000 35,081,000 48,798,000 48,521,000 25,555,000 6,457,000        -113,840,000 -28,966,000 -43,439,000 -27,476,000 11,807,000 34,650,000 68,362,000 62,930,000 55,271,000 33,290,000 17,731,000 17,003,000 22,816,000 16,770,000        -1,484,000 3,735,000 2,073 7,528,000 3,146,000 5,108,000            189,000                    
        accumulated deficit
      -1,552,391,000 -1,449,172,000 -1,253,277,000 -1,075,430,000 -972,665,000 -899,337,000 -817,865,000 -667,667,000 -510,150,000 -379,015,000 -252,877,000 -175,941,000 -159,556,000 -135,872,000 -139,250,000 -159,091,000 -127,193,000 -128,245,000 -229,269,000 -250,271,000 -284,442,000 -354,900,000 -392,891,000 -391,285,000 -362,264,000 -301,049,000 -296,752,000 -288,399,000 -277,655,000 -262,902,000 -255,065,000 -276,688,000 -263,355,000 -253,284,000 -370,959,000 -366,437,000 -355,187,000 -339,257,000 -323,472,000 -343,444,000 -328,801,000 -337,566,000 -273,015,000 -272,130,000 -258,728,000 -257,738,000 -248,179,000                         -179,268,000      -120,630,000 -112,319,000 -104,588,000 -97,178,000 -81,131,000 
        total extra space storage inc. stockholders’ equity
      13,332,480,000 13,433,166,000 13,617,621,000                                      2,143,062,000 2,089,077,000 2,109,292,000 2,144,173,000 1,732,876,000 1,737,425,000 1,739,328,000 1,736,548 1,750,274,000 1,514,309,000 1,530,406,000 1,499,550,000 1,274,516,000 1,255,560,000 1,024,506,000 1,007,380,000 1,004,272,000 890,803,000 876,582,000 879,037,000 878,521,000 883,612,000 878,626,000 892,086,000                   
        noncontrolling interest represented by preferred operating partnership units
      47,827,000 53,827,000 53,827,000 53,827,000 53,827,000 76,092,000 191,306,000 191,306,000 218,824,000 222,360,000 222,939,000 222,940,000 222,940,000 261,502,000 261,494,000 261,231,000 256,051,000 259,110,000 170,248,000 172,902,000 172,652,000 172,052,000 171,738,000 172,542,000 175,319,000 175,948,000 175,918,000 176,108,000 176,264,000 153,096,000                                                     
        noncontrolling interests in operating partnership, net and other noncontrolling interests
      832,195,000 837,043,000 824,964,000 832,420,000 837,889,000 835,735,000 756,764,000 766,902,000 773,108,000 800,668,000 806,641,000 556,689,000 556,428,000 557,175,000 557,233,000 429,889,000 411,898,000 410,370,000 220,865,000 219,965,000 220,028,000 216,293,000 206,800,000 197,286,000 201,192,000 205,785,000 209,357,000 210,494,000 213,399,000 218,602,000                                                     
        total noncontrolling interests and equity
      14,212,502,000 14,324,036,000 14,496,412,000 14,677,089,000 14,778,503,000 14,859,362,000 14,958,683,000 15,130,840,000 15,288,978,000 15,413,949,000 15,566,701,000 4,035,407,000 4,032,701,000 4,078,274,000 4,069,298,000 3,893,240,000 3,878,164,000 3,785,976,000 3,382,875,000 3,360,955,000 3,314,649,000 2,936,124,000 2,767,822,000 2,745,518,000 2,774,630,000 2,921,694,000 2,907,989,000 2,828,811,000 2,773,812,000 2,785,422,000 2,770,094,000 2,715,802,000 2,716,646,000 2,723,807,000 2,573,725,000 2,578,683,000 2,585,815,000 2,596,166,000 2,529,372,000 2,443,217,000 2,425,385,000 2,372,604,000 2,387,340,000 2,423,278,000 1,907,055,000 1,911,983,000 1,933,598,000 1,930,708 1,923,184,000 1,635,167,000 1,589,791,000 1,553,152,000 1,330,152,000 1,310,643,000 1,079,742,000 1,062,069,000 1,058,944,000 947,143,000 934,032,000 940,769,000 940,307,000 948,735,000 945,974,000                    
        total liabilities, noncontrolling interests and equity
      29,099,370,000 29,264,046,000 29,232,969,000 29,368,011,000 28,993,918,000 28,847,926,000 28,063,117,000 27,762,080,000 27,480,120,000 27,456,262,000 27,625,818,000 12,365,453,000 12,132,669,000 12,167,458,000 11,840,645,000 11,038,767,000 10,591,750,000 10,474,477,000 9,708,359,000 9,463,092,000 9,336,612,000 9,395,848,000 8,761,104,000 8,529,894,000 8,549,486,000 8,532,377,000 8,318,430,000 8,390,719,000 8,132,514,000 7,847,978,000 7,798,690,000 7,721,949,000 7,470,624,000 7,455,137,000 7,086,955,000 7,037,463,000 7,034,357,000 7,091,446,000 6,742,056,000 6,458,998,000 6,291,419,000 6,071,407,000 6,002,836,000 4,833,750,000 4,464,145,000 4,402,107,000 4,225,895,000 4,208,890 4,123,491,000 3,518,239,000 3,432,616,000 3,229,096,000 3,012,922,000 2,708,343,000 2,523,136,000 2,374,228,000 2,310,857,000 2,253,117,000 2,175,150,000 2,179,115,000 2,237,462,000 2,369,150,000 2,382,444,000 2,303,736,000                   
        extra space storage inc. stockholders' equity:
                                                                                        
        total extra space storage inc. stockholders' equity
         13,790,842,000 13,886,787,000 13,947,535,000 14,010,613,000 14,172,632,000 14,297,046,000 14,390,921,000 14,537,121,000 3,255,778,000 3,253,333,000 3,259,597,000 3,250,571,000 3,202,120,000 3,210,215,000 3,116,496,000 2,991,762,000 2,968,088,000 2,921,969,000 2,547,779,000 2,389,284,000 2,375,690,000 2,398,119,000 2,539,961,000 2,522,714,000 2,442,209,000 2,384,149,000 2,413,724,000 2,395,719,000 2,341,950,000 2,343,754,000 2,350,751,000 2,215,266,000 2,221,791,000 2,236,116,000 2,244,892,000 2,198,826,000 2,114,707,000                                           
        revolving lines of credit
            884,000,000 948,000,000 620,000,000 682,000,000 623,000,000 275,250,000 94,500,000 945,000,000 600,000,000 599,000,000 220,000,000 535,000,000 174,000,000 261,000,000 353,000,000 949,000,000 94,000,000 207,000,000 244,000,000 158,000,000 159,000,000 382,000,000 335,000,000 81,000,000  250,000,000 100,500,000 94,000,000 25,000,000 128,000,000 363,000,000 365,000,000                                             
        notes payable
               1,273,549,000 1,276,555,000 1,273,448,000 1,306,301,000 1,288,555,000 1,296,830,000 1,288,487,000 1,293,563,000 1,320,755,000 5,409,828,000 5,109,882,000 4,947,417,000 4,797,303,000 4,611,222,000 4,300,744,000 4,310,476,000 4,318,973,000 4,085,295,000 4,090,278,000 4,101,958,000 4,137,213,000 4,104,955,000 3,829,564,000 3,727,744,000 3,738,497,000 3,568,113,000 3,429,153,000 3,198,870,000 3,213,588,000 3,100,235,000 2,985,320,000 2,842,076,000 2,758,567,000 2,527,756,000 1,928,552,000 1,972,957,000 1,872,067,000 1,779,201,000 1,794,049 1,664,872,000 1,402,432,000 1,409,982,000 1,361,554,000 1,226,899,000 1,088,413,000 1,025,923,000 869,866,000 855,323,000 915,533,000 851,812,000 837,166,000 936,468,000 1,044,446,000 1,065,502,000 945,288,000 930,088,000 931,081,000 951,402,000  902,930,000 875,730,000 873,710,000 828,584,000 825,604,000 805,680,000 748,204,000  892,214,000 480,743,000 480,584,000 433,977,000   
        restricted cash
                    7,363,000 11,437,000 6,688,000 5,068,000 15,717,000 3,743,000 2,465,000 18,885,000 5,771,000 5,354,000 4,633,000 4,987,000 4,438,000 7,977,000 7,840,000 15,194,000 21,205,000 19,912,000 18,537,000 30,361,000 17,277,000 16,764,000 12,231,000 13,884,000 16,442,000 15,232,000 32,003,000 30,738,000 228,629,000 25,424,000 35,350,000 25,245,000 26,205,000 20,651 20,026,000 22,803,000 20,502,000 20,157,000 23,384,000 37,234,000 24,273,000 30,352,000 32,700,000 40,527,000 32,893,000 33,699,000 32,962,000 42,083,000 40,927,000 34,877,000 38,265,000 37,152,000 34,213,000  36,642,000 35,528,000 46,094,000 44,282,000 16,955,000 18,384,000 16,758,000  22,099,000 5,996,000 5,510,000 4,430,000 5,754,000 8,705,000 
        accumulated other comprehensive loss
                       -42,546,000 -64,155,000 -71,830,000 -77,180,000 -99,093,000 -108,708,000 -119,256,000               -41,094,000 -53,845,000 -35,939,000 -6,352,000 -20,812,000 -1,819,000 -7,800,000                                      
        exchangeable senior notes
                            575,000,000 573,154,000 571,321,000 569,513,000 567,705,000 565,920,000 564,136,000 562,374,000 560,613,000 570,425,000 568,644,000 604,276,000 602,485,000 614,173,000 612,233,000 610,314,000 608,373,000 606,422,000 606,887,000 623,863,000 660,364,000 250,000,000 250,000,000 250,000,000 250,000,000 250,000 250,000,000 250,000,000 250,000,000    87,663,000 87,663,000 87,663,000 87,663,000 87,663,000 87,663,000 87,663,000 95,163,000 95,163,000 138,163,000 250,000,000 250,000,000 250,000,000  250,000,000 250,000,000 250,000,000            
        notes payable to trusts
                                   30,928,000 95,887,000 117,506,000 117,475,000 117,444,000 117,414,000 117,383,000 117,352,000 117,321,000 117,291,000 117,258,000 117,225,000 117,191,000 119,590,000 119,590,000 119,590,000 119,590,000 119,590,000 119,590 119,590,000 119,590,000 119,590,000 119,590,000 119,590,000 119,590,000 119,590,000 119,590,000 119,590,000 119,590,000 119,590,000 119,590,000 119,590,000 119,590,000 119,590,000 119,590,000 119,590,000 119,590,000 119,590,000  119,590,000 119,590,000 119,590,000 119,590,000 119,590,000 119,590,000 119,590,000  119,590,000 78,352,000     
        investments in unconsolidated real estate ventures
                                175,442,000 174,480,000 161,029,000 125,326,000 114,451,000 97,556,000 63,868,000 70,091,000 78,512,000 79,294,000 79,385,000 79,570,000 85,912,000 99,576,000 89,224,000 103,007,000 84,671,000 84,744,000 85,602,000 85,711,000 86,232,000 86,794 89,326,000 100,455,000 101,698,000 102,102,000                               
        noncontrolling interest represented by preferred operating partnership units, net of 119,735 and 120,230 notes receivable as of september 30, 2018 and december 31, 2017, respectively
                                    160,250,000                                                    
        noncontrolling interests in operating partnership
                                    213,885,000 213,509,000 212,476,000 213,301,000 202,232,000 200,596,000 201,876,000 203,354,000 195,186,000 193,182,000 201,791,000 202,834,000 197,017,000 197,912,000 92,105,000 92,422,000 90,420,000 90,332 91,042,000 90,504,000 28,877,000 22,603,000 24,699,000 24,279,000 24,425,000 23,924,000 23,900,000 25,510,000 26,608,000 30,909,000 31,113,000                      
        other noncontrolling interests
                                    240,000 239,000 239,000 119,000 1,795,000 1,806,000    161,000 161,000 162,000 162,000 173,000 986,000 984,000 1,032,000 1,029 1,025,000 474,000 475,000 1,035,000 1,108,000 1,112,000 1,105,000 1,100,000 1,114,000 1,129,000 1,141,000 1,066,000 860,000 1,029,000 1,591,000 1,989,000                   
        noncontrolling interest represented by preferred operating partnership units, net of 119,735 and 120,230 notes receivable as of june 30, 2018 and december 31, 2017, respectively
                                     160,104,000                                                   
        noncontrolling interest represented by preferred operating partnership units, net of 119,735 and 120,230 notes receivable as of march 31, 2018 and december 31, 2017, respectively
                                      160,177,000                                                  
        receivables from related parties and affiliated real estate joint ventures
                                       2,847,000 4,618,000 4,676,000 6,251,000 16,611,000 9,156,000 485,000 15,739,000 2,205,000 3,016,000 2,071,000 3,136,000 11,778,000 12,283,000 12,640 8,966,000 7,928,000 3,258,000 9,096,000 10,930,000 15,976,000 15,415,000 61,184,000 8,490,000 9,334,000 24,593,000 20,589,000 23,004,000 3,377,000 5,666,000 5,035,000 11,591,000 9,238,000 9,529,000  9,447,000 8,321,000 5,966,000 15,880,000 7,064,000 11,793,000 16,590,000        
        noncontrolling interest represented by preferred operating partnership units, net of 120,230 notes receivable
                                       159,636,000 154,432,000 154,490,000 147,823,000 147,920,000 135,360,000 135,167,000 80,371,000 80,531,000 80,869,000 81,020,000 81,088,000 81,152,000                                     
        lines of credit
                                            166,000,000 88,000,000 116,000,000 36,000,000 185,000,000  99,000,000 138,000,000 40,000,000 10,000 87,000,000   100,000,000 240,000,000 100,000,000 135,000,000 166,000,000 129,000,000 125,000,000 115,000,000 140,000,000 100,000,000 100,000,000 100,000,000                48,499,000 39,000,000   
        premium on notes payable
                                                1,235,000 1,599,000 2,534,000 3,281,000 4,010,000 4,775 4,053,000 2,336,000 2,546,000 2,754,000 3,638,000 3,958,000 4,273,000                            
        discount on exchangeable senior notes
                                                -26,146,000 -11,285,000 -12,169,000 -13,054,000 -13,920,000                                    
        paid-in capital
                                                   1,995,484,000 1,982,612,000 1,981,186 1,976,597,000 1,766,691,000 1,765,577,000 1,742,569,000 1,531,975,000 1,527,332,000 1,294,572,000 1,281,378,000 1,278,939,000 1,161,184,000 1,146,903,000 1,144,433,000 1,138,906,000 1,132,865,000 1,132,073,000 1,131,150,000 1,063,411,000 1,061,484,000 827,474,000  825,130,000 824,088,000 823,348,000 822,181,000 821,852,000 624,465,000 623,801,000  435,571,000 429,179,000 347,883,000 347,883,000   
        noncontrolling interest represented by preferred operating partnership units, net of 100,000 note receivable
                                                    102,818,000 102,799 80,843,000  30,033,000 29,964,000 29,829,000 29,692,000 29,706,000 29,665,000 29,658,000 29,701,000 29,701,000 29,757,000 29,813,000 29,941,000 29,891,000 28,382,000                   
        noncontrolling interest represented by series b preferred operating partnership units
                                                       33,713,000                                 
        noncontrolling interest represented by series a preferred operating partnership units, net of 100,000 note receivable
                                                       29,880,000                                 
        accumulated other comprehensive deficit
                                                                                        
        investments in real estate ventures
                                                          121,269,000 125,729,000 125,336,000 134,219,000 137,997,000 141,525,000 144,121,000 152,976,000 146,718,000 132,356,000 132,272,000 135,785,000 139,345,000 95,819,000 94,711,000  89,876,000 91,303,000 92,515,000 88,115,000 89,695,000 90,569,000 89,652,000  96,665,000 7,773,000 6,121,000 6,182,000 5,383,000 7,541,000 
        noncontrolling interest and equity:
                                                                                        
        real estate assets:
                                                                                        
        net operating real estate assets
                                                             2,051,567,000 2,038,827,000 1,958,245,000 1,873,161,000 1,867,245,000 1,842,348,000 1,989,675,000 1,940,232,000 1,955,543,000 1,856,809,000 1,811,327,000 1,788,625,000  1,707,384,000 1,641,120,000 1,419,774,000 1,382,055,000 1,333,901,000       694,936,000 670,775,000 455,629,000 
        real estate under development
                                                             8,621,000 6,800,000 13,168,000 29,537,000 29,079,000 33,295,000 52,942,000 89,310,000 77,022,000 48,447,000 74,127,000 64,533,000  49,943,000 35,906,000 31,423,000 35,336,000 36,343,000       1,963,000 8,949,000 85,232,000 
        net real estate assets
                                                             2,060,188,000 2,045,627,000 1,971,413,000 1,902,698,000 1,896,324,000 1,875,643,000 2,042,617,000 2,029,542,000 2,032,565,000 1,905,256,000 1,885,454,000 1,853,158,000  1,757,327,000 1,677,026,000 1,451,197,000 1,417,391,000 1,370,244,000       696,899,000 679,724,000 540,861,000 
        equity:
                                                                                        
        noncontrolling interest in operating partnership
                                                                   34,153,000 35,866,000 30,580,000                   
        line of credit
                                                                     100,000,000          25,000,000 25,000,000  42,000,000      
        total equity
                                                                     953,037,000                   
        investments available for sale
                                                                                        
        liabilities, minority interests, and stockholders’ equity:
                                                                                        
        minority interest represented by preferred operating partnership units, net of 100,000 note receivable
                                                                      28,828,000 29,204,000 29,612,000  30,427,000              
        minority interest in operating partnership and other minority interests
                                                                      30,696,000 31,238,000                 
        stockholders’ equity:
                                                                                        
        other comprehensive deficit
                                                                                        
        total stockholders’ equity
                                                                      829,143,000 835,468,000 612,886,000  627,290,000 631,266,000 636,576,000 643,555,000 651,085,000 461,113,000 469,141,000  301,275,000 308,923,000 235,876,000    
        total liabilities, minority interests, and stockholders’ equity
                                                                      2,243,686,000 2,249,277,000     1,951,610,000 1,669,825,000 1,668,536,000 1,477,969,000 1,428,268,000  1,429,555,000 901,910,000 797,153,000    
        liabilities, minority interests and stockholders’ equity:
                                                                                        
        minority interest in operating partnership
                                                                        33,371,000  36,807,000 37,020,000 34,322,000 34,841,000 35,304,000 34,549,000 35,194,000  36,153,000 20,045,000 20,776,000 21,453,000 21,984,000  
        other minority interests
                                                                          164,000 277,000 333,000 317,000 225,000 225,000 225,000  225,000 225,000    10,508,000 
        total liabilities, minority interests and stockholders’ equity
                                                                        2,049,284,000  2,019,575,000              
        short-term investments
                                                                          49,200,000 90,331,000 286,360,000            
        preferred stock , 0.01 par value...
                                                                                        
        derivative instrument associated with preferred operating partnership units
                                                                           15,268,000             
        preferred operating partnership units, net of 100,000 note receivable
                                                                           6,465,000             
        total liabilities, preferred operating partnership, minority interests, and stockholders’ equity
                                                                           1,983,939,000             
        notes receivable
                                                                              1,688,000 1,693,000 11,996,000  38,008,000      
        deferred stock compensation
                                                                                        
        receivables from related parties
                                                                                  31,101,000 3,264,000 2,254,000 2,501,000 714,000 13,312,000 
        deferred compensation
                                                                                        
        redeemable minority interest - fidelity
                                                                                       19,485,000 
        liabilities, minority interests, redeemable units and members’ and shareholders’ equity
                                                                                        
        payables to related parties
                                                                                       51,343,000 
        putable preferred interests in consolidated joint ventures
                                                                                       35,303,000 
        redeemable minority interest—fidelity
                                                                                        
        redeemable class c units
                                                                                       30,205,000 
        redeemable class e units
                                                                                       14,900,000 
        members’ and shareholders’ equity
                                                                                        
        class a units
                                                                                       9,614,000 
        class b units
                                                                                       48,852,000 
        note receivable from centershift
                                                                                        
        total members’ and shareholders’ equity
                                                                                     243,607,000 251,016,000  
        total liabilities, minority interests, redeemable units and members’ and shareholders’ equity
                                                                                     748,484,000 737,600,000  
        cash
                                                                                      32,006,000 2,775,000 
        liabilities:
                                                                                        
        borrowings
                                                                                      454,023,000 431,847,000 
        accounts payable
                                                                                      2,949,000 548,000 
        preferred shares, 50,000,000 shares authorized at 0.01 per share, none issued and outstanding at september 30, 2004 and december 31, 2003
                                                                                        
        common shares, 200,000,000 shares authorized at 0.01 per share, 31,169,950 issued and outstanding at september 30, 2004
                                                                                      312,000  
        capital contributed in excess of par value
                                                                                      347,882,000  
        liabilities, minority interests, redeemable units and members’ equity
                                                                                        
        members’ equity
                                                                                        
        total members equity
                                                                                       -22,665,000 
        total liabilities, minority interests, redeemable units and members’s equity
                                                                                       584,453,000 
        revenues:
                                                                                        
        property rental revenues
                                                                                       13,014,000 
        management fees
                                                                                       428,000 
        acquisition fees and development fees
                                                                                       134,000 
        other income
                                                                                       353,000 
        total revenues
                                                                                       13,929,000 
        expenses:
                                                                                        
        property operating expenses
                                                                                       5,880,000 
        unrecovered development/acquisition costs and support payments
                                                                                       186,000 
        general and administrative expense
                                                                                       3,273,000 
        depreciation and amortization
                                                                                       3,089,000 
        total operating expenses
                                                                                       12,428,000 
        income before interest expense, minority interests, equity in earnings of real estate ventures and gain on sale of real estate assets
                                                                                       1,501,000 
        interest expense
                                                                                       -8,406,000 
        minority interest - fidelity preferred return
                                                                                       -1,124,000 
        loss allocated to other minority interests
                                                                                       560,000 
        equity in earnings of real estate ventures
                                                                                       433,000 
        gain on sale of real estate assets
                                                                                        
        net income
                                                                                       -7,036,000 
      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 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 2013-09-30 2013-06-30 2013-03-31 2012-09-30 2012-06-30 2012-03-31 2011-09-30 2011-06-30 2011-03-31 2010-09-30 2010-06-30 2010-03-31 2009-09-30 2009-06-30 2009-03-31 2008-09-30 2008-06-30 2008-03-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-09-30 2005-06-30 2005-03-31 2004-09-30 
                                                                                      
          cash flows from operating activities:
                                                                                      
          net income
        252,420,000 300,864,000 174,033,000 262,716,000 284,925,000 277,801,000 202,945,000 195,412,000 224,074,000 227,407,000 198,856,000 215,312,000 208,878,000 219,479,000 236,126,000 247,834,000 217,717,000 283,858,000 199,820,000 178,579,000 215,501,000 166,309,000 123,854,000 111,257,000 116,162,000 120,279,000 115,995,000 112,689,000 102,160,000 109,250,000 139,687,000 102,713,000 95,430,000 229,315,000 101,075,000 94,098,000 89,734,000 90,416,000 127,226,000 90,040,000 89,407,000 11,744,000 78,200,000 60,956,000 58,636,000 49,486,000 59,193,000 46,008,000 41,209,000 32,352,000 37,101,000 33,931,000 41,553,000 24,745,000 22,518,000 17,352,000 12,517,000 10,140,000 9,482,000 7,925,000 5,179,000 7,574,000 -6,681,000 30,762,000 12,327,000 8,901,000 6,700,000 11,338,000 8,695,000 6,470,000 6,739,000 4,307,000 3,092,000 738,000     
          adjustments to reconcile net income to net cash from operating activities:
                                                                                      
          depreciation and amortization
        185,795,000 180,089,000 177,466,000 177,266,000 180,356,000 196,202,000 195,046,000 194,809,000 196,966,000 196,139,000 152,338,000 79,086,000 78,490,000 79,920,000 71,423,000 69,067,000 67,906,000 62,194,000 61,516,000 59,570,000 58,599,000 56,739,000 56,412,000 56,018,000 55,275,000 54,741,000 56,051,000 54,406,000 54,659,000 53,126,000 52,283,000 51,892,000 51,749,000 49,157,000 48,075,000 46,632,000 49,432,000 49,158,000 46,555,000 43,950,000 42,897,000 40,766,000 30,711,000 31,552,000 30,428,000 29,181,000 29,249,000 28,271,000 28,375,000 23,428,000 22,785,000 23,025,000 19,768,000 16,626,000 16,524,000 14,364,000 14,092,000 13,585,000 12,519,000 12,202,000 12,419,000 13,797,000 12,840,000 12,523,000 12,355,000 11,697,000 11,581,000 10,598,000 9,123,000 8,796,000 9,586,000 9,253,000 9,057,000 9,276,000 9,535,000 6,213,000 5,730,000 10,823,000 
          amortization of deferred financing costs
        3,228,000 3,173,000 3,106,000 2,861,000 2,790,000 3,254,000 5,680,000 3,731,000 4,008,000 9,233,000 4,246,000 2,866,000 2,604,000 2,421,000 2,419,000 1,949,000 1,984,000 3,931,000 1,787,000 2,583,000 2,286,000 2,030,000 2,410,000 2,116,000 2,830,000 3,077,000 2,906,000 2,972,000 3,034,000 5,056,000 3,166,000 3,043,000 3,021,000 3,043,000 3,163,000 2,980,000 3,103,000 3,534,000 3,771,000 2,794,000 2,823,000 2,903,000 1,548,000 1,730,000 1,598,000 1,637,000 1,719,000 1,595,000 1,641,000 1,163,000 1,525,000 1,510,000 1,646,000 1,124,000 2,246,000 1,487,000 1,131,000 1,102,000 976,000 1,097,000 1,250,000 1,097,000 998,000 883,000 932,000 847,000 861,000 897,000 928,000 632,000         
          non-cash lease expense
        3,152,000 3,227,000 3,214,000        506,000 480,000 462,000 462,000 502,000 465,000 474,000 473,000 451,000 458,000 487,000 374,000 369,000 77,000 353,000                                                      
          non-cash interest expense related to amortization of discount on unsecured senior notes
        12,555,000 12,350,000 12,086,000                                                                            
          compensation expense related to share-based awards
        7,606,000 12,797,000 7,061,000 8,512,000 7,167,000 8,489,000 8,225,000 280,000 5,912,000                                                                      
          accrual of interest income added to principal of debt securities and notes receivable
        -7,710,000 -8,453,000 -7,680,000 -8,148,000 -8,273,000 -7,912,000 -7,355,000 -8,545,000 -7,555,000 -7,780,000 -13,927,000 -7,626,000 -8,574,000 -9,898,000 -9,279,000 -9,284,000 -9,951,000 -8,679,000 -8,559,000 -8,779,000 -8,533,000                                                          
          equity in earnings of unconsolidated real estate ventures - gain on sale of a joint venture interest
        -207,000                                                                              
          gain on real estate assets held for sale and sold
            -35,761,000                                                                          
          distributions in excess of earnings from unconsolidated real estate ventures
        3,332,000                                                                              
          changes in operating assets and liabilities:
                                                                                      
          other assets
        38,187,000 49,249,000 -55,101,000 16,785,000 10,218,000 -57,780,000 48,255,000 -22,181,000 19,663,000 616,000 -4,994,000 -25,479,000 -2,650,000 2,999,000 -19,996,000 21,998,000 -6,209,000 -13,279,000 -16,131,000 8,256,000 -2,737,000 -1,697,000 -7,792,000 -12,675,000 2,490,000 -1,329,000 -13,043,000 2,195,000 -305,000 -1,025,000 -7,908,000 8,006,000 -737,000 804,000 -30,564,000 10,730,000 4,336,000 13,078,000 -14,873,000 4,090,000 -5,276,000 18,850,000 -17,061,000 -324,000 -2,637,000 -1,965,000 -3,306,000 2,325,000 1,448,000  897,000 1,051,000 3,705,000 -1,818,000 2,979,000 -3,852,000 1,850,000 3,110,000     148,000 317,000    1,692,000 -742,000 4,095,000 -2,689,000 -1,177,000 3,252,000 3,643,000  -6,027,000 -716,000 1,381,000 
          accounts payable and accrued expenses
        9,989,000 -113,895,000 43,662,000 72,531,000 4,998,000 -44,181,000 2,476,000 41,557,000 1,112,000 -99,279,000 98,076,000 31,510,000 4,724,000 -19,871,000 20,252,000 36,311,000 -7,665,000 -22,956,000 14,844,000 21,754,000 -2,691,000 -23,806,000 21,817,000 16,236,000 3,727,000 -13,788,000 7,678,000 15,214,000 6,418,000 -24,941,000 19,789,000 -2,546,000 10,434,000 -16,940,000 24,515,000 11,979,000 -30,069,000 -863,000 11,340,000 5,240,000 -5,642,000 -10,674,000 6,925,000 -2,175,000 6,032,000 -8,007,000 7,989,000      2,486,000     123,000   512,000    2,875,000              
          other liabilities
        -18,492,000 -36,945,000 -3,376,000 -16,460,000 14,479,000 50,254,000 -52,219,000 68,429,000 2,371,000 13,288,000 -45,781,000 40,984,000 -11,573,000 4,869,000 -2,633,000 -9,823,000 15,872,000 -12,548,000 6,226,000 -2,508,000 -664,000 7,389,000 -11,404,000 21,956,000 1,691,000 -6,703,000 5,833,000 1,012,000 -2,475,000 1,787,000 7,702,000 -1,380,000 6,275,000 -5,258,000 9,568,000 -3,582,000 -6,359,000 -2,965,000 6,615,000 -2,457,000 -985,000 13,718,000 2,125,000 1,172,000 -5,087,000 6,856,000 -2,643,000   -715,000            -3,516,000   -501,000 488,000 896,000    2,036,000 3,240,000    3,619,000 447,000 -4,539,000 
          net cash from operating activities
        489,855,000 367,797,000 457,131,000 543,861,000 481,404,000 408,279,000 468,351,000 545,244,000 465,556,000 364,515,000 408,432,000 347,878,000 281,649,000 290,118,000 307,634,000 352,922,000 287,465,000 223,168,000 265,580,000 259,808,000 203,880,000 187,965,000 191,194,000 202,817,000 189,256,000 163,220,000 181,059,000 194,068,000 169,339,000 148,768,000 189,285,000 168,134,000 171,608,000 147,746,000 160,580,000 175,928,000 113,121,000 153,104,000 146,489,000 144,204,000 95,466,000 81,048,000 102,994,000 95,848,000 87,439,000 81,017,000 88,805,000 103,187,000 64,572,000 72,033,000 75,435,000 51,116,000 60,340,000 51,831,000 40,790,000 35,464,000 35,191,000 30,002,000 28,659,000 30,056,000 16,015,000 16,960,000 30,514,000 18,618,000 25,868,000    26,243,000 25,662,000 13,804,000   15,030,000  1,189,000 3,256,000 -15,200,000 
          capital expenditures
              
          free cash flows
        489,855,000 367,797,000 457,131,000 543,861,000 481,404,000 408,279,000 468,351,000 545,244,000 465,556,000 364,515,000 408,432,000 347,878,000 281,649,000 290,118,000 307,634,000 352,922,000 287,465,000 223,168,000 265,580,000 259,808,000 203,880,000 187,965,000 191,194,000 202,817,000 189,256,000 163,220,000 181,059,000 194,068,000 169,339,000 148,768,000 189,285,000 168,134,000 171,608,000 147,746,000 160,580,000 175,928,000 113,121,000 153,104,000 146,489,000 144,204,000 95,466,000 81,048,000 102,994,000 95,848,000 87,439,000 81,017,000 88,805,000 103,187,000 64,572,000 72,033,000 75,435,000 51,116,000 60,340,000 51,831,000 40,790,000 35,464,000 35,191,000 30,002,000 28,659,000 30,056,000 16,015,000 16,960,000 30,514,000 18,618,000 25,868,000    26,243,000 25,662,000 13,804,000   15,030,000  1,189,000 3,256,000 -15,200,000 
          cash flows from investing activities:
                                                                                      
          acquisition of real estate assets and improvements
        -74,469,000 -338,720,000 -123,030,000 -255,893,000 -208,624,000 -289,409,000 -203,797,000 -66,279,000 -91,050,000 -123,378,000                                                                     
          development and redevelopment of real estate assets
        -26,419,000 -31,958,000 -31,507,000 -44,323,000 -35,237,000 -28,111,000 -31,123,000 -33,559,000 -35,825,000 -33,648,000 -29,289,000 -20,482,000 -16,762,000 -30,367,000 -2,396,000 -14,540,000 -14,716,000 -13,507,000 -16,937,000 -11,696,000 -14,086,000 -21,188,000 -16,121,000 -14,618,000 -15,373,000 -19,304,000 -13,522,000 -5,045,000 -15,846,000 -15,301,000 -17,483,000 -16,787,000 -11,106,000 -11,076,000 -8,396,000 -7,028,000 -5,246,000 -4,787,000 -4,092,000 -7,857,000 -6,543,000 -11,794,000 -5,211,000 -6,786,000 -3,140,000 -12,240,000                                 
          proceeds from sale of real estate assets
        6,103,000 199,436,000 35,541,000 8,476,000 124,730,000               61,472,000 132,733,000 43,790,000                 39,204,000         -40,000                   728,000    7,896,000 
          investment in unconsolidated real estate entities
        -5,563,000 -19,927,000 6,107,000 -10,888,000 -102,397,000 -294,742,000 3,614,000 -8,377,000 -2,412,000 -1,021,000 -8,132,000 -150,064,000 -21,062,000 -16,293,000 -26,331,000 -72,018,000 -4,321,000 -33,768,000 -13,660,000 -6,924,000 -250,000 -50,855,000 -4,396,000 -3,100,000 -6,441,000                                                      
          issuance of notes receivable
        -14,590,000 -102,835,000 -151,971,000                     -16,825,000 -7,500,000 -23,316,000 -10,078,000   39,000                                                 
          payments received on notes receivable
        40,957,000 108,514,000 91,624,000 6,375,000 39,963,000                                                                          
          proceeds from sale of notes receivable
        29,335,000 14,192,000 66,001,000 6,496,000 25,875,000 8,297,000    33,431,000 73,368,000 21,435,000 39,261,000 6,353,000 121,580,000 42,397,000 39,718,000 55,180,000 29,524,000 6,048,000 81,250,000                                                          
          purchase of equipment and fixtures
        -2,855,000 -5,435,000 -7,302,000 -4,133,000 -4,269,000 -4,801,000 -6,061,000 -3,050,000 -6,602,000 -6,479,000 -3,610,000 -1,975,000 -3,930,000 -3,342,000 -9,978,000 -1,527,000 -7,985,000 -601,000 -981,000 -1,380,000 -697,000 -3,686,000 -642,000 -1,670,000 -1,095,000 -2,805,000 -2,936,000 -841,000 -1,182,000 -1,271,000 -806,000 -1,089,000 -1,131,000 -2,184,000 -1,525,000 -2,818,000 -1,292,000 -2,150,000 -690,000 -1,220,000 -908,000 -2,559,000 -2,229,000 -1,408,000 -1,184,000 -1,194,000                                 
          net cash from investing activities
        -47,501,000 -116,551,000 -83,407,000 -272,217,000 -342,038,000 -769,417,000 -112,736,000 -482,696,000 -282,071,000 -182,204,000 -1,278,466,000 -271,247,000 -86,339,000 -406,205,000 -672,226,000 -448,656,000 -121,372,000 -419,748,000 -272,490,000 -187,897,000 42,595,000 -591,582,000 -251,977,000 -51,295,000 -60,573,000 -265,253,000 84,052,000 -193,454,000 -246,975,000 -126,869,000 -87,934,000 -198,167,000 -30,928,000 -281,812,000 -38,710,000 -48,944,000 -90,000 -327,725,000 -298,318,000 -147,324,000 -258,668,000 -1,139,230,000 -233,645,000 -161,278,000 -91,511,000 -208,007,000               11,821,000               -18,926,000 -57,679,000 -236,112,000 
          cash flows from financing activities:
                                                                                      
          proceeds from secured and unsecured term loans, senior notes, revolving lines of credit and commercial paper
        4,173,770,000                                                                              
          principal payments on secured and unsecured term loans, senior notes, revolving lines of credit and commercial paper
        -4,248,783,000                                                                              
          proceeds from issuance of public bonds
         800,000,000 850,000,000 300,000,000 400,000,000 600,000,000  450,000,000 500,000,000 -3,900,000 400,000,000 593,953,000                                                            
          deferred financing costs
        -48,000 -1,713,000 -17,325,000 155,000 -13,528,000 -10,497,000 -6,914,000 -105,000 -5,614,000 11,941,000 -23,208,000 -22,071,000 -6,080,000 -1,703,000 -905,000 -871,000 -5,842,000 -5,295,000 -3,714,000 -1,689,000 -891,000 -3,149,000 4,000 -16,000 -978,000 -1,421,000 -487,000 -100,000 -5,247,000 -4,027,000 -2,911,000 -117,000 -1,795,000 -2,247,000 -2,672,000 -253,000 -10,786,000 -998,000 -4,416,000 -1,286,000 -4,641,000 -1,687,000 -2,032,000 -1,419,000 -1,454,000                              -2,313,000 -400,000 -8,794,000 
          repurchase of common stock
        -1,443,000                   -54,000 -15,615,000 -52,204,000                                                      
          redemption of operating partnership units for cash
        -1,656,000 -1,174,000                                                                            
          redemption of preferred op units for cash
        -6,000,000                                                                              
          dividends paid on common stock
        -342,753,000 -342,368,000 -343,845,000 -343,882,000 -344,203,000 -343,959,000 -343,408,000 -343,428,000 -344,208,000 -342,272,000 -265,286,000 -218,795,000 -219,988,000 -200,882,000 -200,878,000 -201,024,000 -202,527,000 -167,403,000 -167,274,000 -133,777,000 -132,540,000 -118,065,000 -116,185,000 -116,318,000 -117,197,000 -116,579,000 -116,440,000 -115,572,000 -109,523,000 -109,299,000 -108,795,000 -108,486,000 -98,327,000 -98,286,000 -98,286,000 -98,256,000 -98,212,000 -98,188,000 -98,116,000 -97,687,000 -73,827,000 -73,226,000 -72,603,000 -68,741,000 -54,732,000 -54,681,000                              -7,091,000 -7,091,000 -3,468,000 
          distributions to noncontrolling interests, net of contributions
        -15,216,000 -18,048,000 -14,087,000 -15,250,000 -15,511,000                                                                          
          net cash from financing activities
        -442,129,000 -224,300,000 -386,178,000 -266,004,000 -159,621,000 410,116,000 -342,834,000 -36,390,000 -233,182,000 -300,349,000 1,040,242,000 -74,160,000 -242,603,000 119,468,000 388,780,000 93,234,000 -169,621,000 191,493,000 28,442,000 -74,957,000 -311,689,000 451,052,000 79,606,000 -187,701,000 -101,486,000 106,051,000 -254,040,000 8,202,000 51,774,000 -15,792,000 -103,874,000 45,075,000 -172,660,000 126,017,000 -89,786,000 -124,647,000 -127,578,000 199,787,000 129,463,000 -5,575,000 137,156,000 18,449,000 1,070,290,000 196,019,000 1,713,000 125,437,000 -50,035,000 -39,423,000 112,328,000    106,920,000   36,797,000      -26,666,000 79,423,000 5,531,000 -21,727,000    -145,584,000 274,297,000    13,422,000 470,630,000 100,493,000 42,380,000 271,572,000 
          net change in cash, cash equivalents, and restricted cash
        225,000                                                                              
          cash, cash equivalents, and restricted cash, beginning of the period
        143,180,000 143,303,000 105,083,000 97,735,000 76,194,000 128,009,000 70,733,000 72,690,000 86,044,000                                              
          cash, cash equivalents, and restricted cash, end of the period
        143,405,000 26,946,000 -12,454,000 5,640,000 123,048,000 48,978,000 12,781,000 26,158,000 55,386,000 -118,038,000 170,208,000 2,471,000 50,442,000 3,381,000 24,188,000 -2,500,000 72,666,000 -5,087,000 21,532,000 -3,046,000 62,795,000 47,435,000 18,823,000 -36,179,000 97,930,000 4,018,000 11,071,000 8,816,000 46,828,000    54,064,000                                              
          loss on real estate assets held for sale and sold
         6,079,000 105,128,000                                                                            
          equity in earnings of unconsolidated real estate ventures - gain on sale of real estate assets and sale of a joint venture interest
         -45,167,000                                                                            
          impairment of life storage trade name
                                                                                     
          distributions from unconsolidated real estate ventures
         4,429,000 6,885,000 8,718,000 9,192,000 8,906,000 7,299,000 6,240,000 8,300,000 8,576,000 3,890,000 3,805,000 3,789,000                                                                  
          life storage merger, net of cash acquired
                                                                                     
          return of investment in unconsolidated real estate ventures
         60,182,000 31,130,000   2,414,000 8,799,000       342,000 365,000 31,169,000      1,166,000 20,000 47,944,000 581,000 4,962,000 10,673,000 1,000,000 318,000 45,019,000                                     
          issuance of loan collateralized with op units
                                                                                      
          proceeds from unsecured term loans, senior notes, revolving lines of credit and commercial paper
         4,746,800,000 4,995,912,000 2,461,000,000 3,979,431,000                                                                          
          principal payments on unsecured term loans, senior notes, revolving lines of credit and commercial paper
         -4,468,038,000 -5,805,659,000 -2,359,133,000 -4,615,810,000                                                                          
          proceeds from share issuances
                                                                                     
          offering costs associated with shelf registration
             -28,000                                                                        
          cash and equivalents, including restricted cash at the beginning of the period:
                                                                                      
          cash and equivalents
           138,222,000 99,062,000   92,868,000                                                                  
          restricted cash included in other assets
           5,081,000 6,021,000   4,867,000                                                                  
          cash and equivalents, including restricted cash at the beginning of the period: - sum
           143,303,000   105,083,000   97,735,000                                                                  
          cash and equivalents, including restricted cash at the end of the period:
                                                                                      
          cash and equivalents, including restricted cash at the end of the period: - sum
         26,946,000    48,978,000   55,386,000    50,442,000                                                                  
          supplemental schedule of cash flow information
                                                                                      
          interest paid
         131,253,000    117,983,000           43,197,000                                                              
          supplemental schedule of noncash investing and financing activities:
                                                                                      
          redemption of operating partnership units held by noncontrolling interests for common stock
                                                                                      
          noncontrolling interests in operating partnership
            -91,329,000                                                                         
          common stock and paid-in capital
            89,429,000                                                                         
          noncontrolling interests in operating partnership note receivable payoff
                                                                                      
          redemption of preferred d units in the operating partnership for loans
                                                                                      
          preferred op units redeemed
                                                                                      
          note payable
                                                                                      
          conversion of preferred op units to common op units
                                                                                      
          preferred op units
                                                                                      
          common op units
                                                                                      
          acquisition and establishment of operating lease right of use assets and lease liabilities
                                                                                      
          real estate assets - operating lease right-of-use assets
         5,410,000                                                                             
          operating lease liabilities
         -5,410,000                                                                             
          acquisitions of real estate assets
                                                                                      
          real estate assets
         375,910,000                                                                    502,000         
          value of op units issued
         -13,858,000                                                                             
          value of investment in consolidated real estate ventures
         -30,459,000                                                                             
          net debt assumed
                                                                                      
          bridge loan receivable
                                                                                      
          investment in unconsolidated real estate ventures
                                 30,881,000 -2,317,000 -13,949,000 -17,395,000 -12,694,000 -18,054,000 -34,314,000 -438,000 -14,923,000 -351,000 -1,151,000 -1,519,000 -2,551,000 -6,381,000 -14,515,000 -4,794,000 -2,885,000                                     
          life storage merger real estate assets
                                                                                      
          value of common stock issued
                                                                                      
          unsecured senior notes
                                                                                      
          net liabilities assumed
                                                                                      
          accrued construction costs and capital expenditures
                                                                                      
          acquisition of real estate assets
         -1,353,000    1,943,000      -80,120,000 -47,296,000 -166,714,000 -686,490,000 -242,482,000 -195,805,000 -643,916,000 -214,173,000 -213,457,000 -161,752,000 -168,904,000 -105,998,000 -15,082,000 -30,164,000 -62,380,000 -38,306,000 -36,256,000 -212,552,000 -99,377,000 -88,858,000 -162,031,000 -76,122,000 -534,145,000 -46,389,000 -33,515,000 -39,136,000 -323,277,000 -327,948,000 -200,478,000 -234,820,000 -86,493,000 -22,512,000 -163,810,000 -77,082,000 -175,303,000                              -14,634,000 -55,327,000 -218,194,000 
          repurchase of common stock, net of offering costs
                                                                                      
          net decrease in cash, cash equivalents, and restricted cash
          -12,454,000 5,640,000 -20,255,000   26,158,000 -49,697,000   2,471,000 -47,293,000   -2,500,000 -3,528,000          11,071,000 8,816,000 -25,862,000   15,042,000 -31,980,000                                              
          income taxes paid
             3,137,000           703,000                                                              
          non-cash interest expense related to amortization of discount on life storage unsecured senior notes
            11,313,000 11,157,000 11,005,000 10,853,000 10,705,000                                                                      
          issuance and repurchase of notes receivable
            -182,079,000                                                                          
          non-cash item - amortization of premium portion of dec 2024 300m bond add-on
                                                                                      
          cash paid for business combination
                     -1,000                                                                
          proceeds from sale of real estate assets and investments in real estate ventures
             120,513,000    1,086,000     376,487,000                                                             
          principal payments received from notes receivable
             -13,008,000 106,516,000 35,632,000 11,823,000 68,678,000 27,048,000 24,638,000 21,828,000 18,862,000 41,001,000 27,970,000 195,803,000 14,589,000 16,448,000       6,650,000    16,054,000 9,172,000 44,869,000 1,392,000                                        
          contributions from noncontrolling interests
             14,000                -2,000   27,000 96,000   2,000 120,000                                              
          distributions to noncontrolling interests
             -15,124,000 -15,876,000 -15,946,000 -16,231,000 -16,646,000 -14,960,000 -13,965,000 -14,078,000 -15,161,000 -14,395,000 -14,127,000 -14,110,000 -10,510,000 -10,585,000 -8,974,000 -9,025,000 -8,354,000 -8,371,000 -8,385,000 -8,505,000 -8,508,000 -8,618,000 -8,705,000 -8,412,000 -8,413,000 -8,460,000 -8,468,000 -7,909,000 -7,831,000 -7,816,000 -7,882,000 -8,443,000 -8,344,000 -8,353,000 -7,854,000 -6,446,000 -6,429,000 -6,501,000 -6,577,000 -4,996,000 -4,878,000                                 
          net increase in cash, cash equivalents, and restricted cash
             48,978,000    -118,038,000    3,381,000    -5,087,000   -65,214,000 47,435,000   27,197,000     6,107,000                                                 
          issuance of op and preferred op units in conjunction with business combination
                                                                                      
          preferred op units issued
                                                                                      
          op units issued
                                                                                      
          value of equity issued
                                                                                      
          finance lease liability
                                                                                      
          buyback of bridge loan
                                                                                      
          loss on real estate assets held for sale
              8,961,000                                                                        
          issuance and purchase of notes receivable
              -170,434,000 -411,263,000 -158,005,000 -119,787,000 -86,609,000 -65,725,000 -58,378,000 -214,703,000 -109,612,000 -70,522,000 -134,408,000 -174,212,000 -74,747,000 -42,751,000 -25,772,000 -163,605,000                                                         
          proceeds from unsecured term loans and senior notes and revolving lines of credit
              2,278,892,000 1,584,000,000 1,679,470,000                                                                      
          principal payments on unsecured term loans and senior notes and revolving lines of credit
              -2,655,514,000 -1,260,191,000 -2,147,191,000                                                                      
          redemption of preferred a units for cash
                                                                                      
          op unit redemption - cash proceeds
                                                                                      
          proceeds from share issuances and redemption of stock options for cash
               -226,000 592,000                                                                      
          gain on real estate transactions
                       -76,877,000 -63,883,000                                                         
          equity in earnings of unconsolidated real estate ventures - gain on sale of real estate assets
                                                                                      
          proceeds from the sale of common stock, net of offering costs
                         -169,000 -151,000 -211,000 273,720,000     -25,000 100,056,000   56,451,000        1,000 50,054,000 -205,000 73,574,000 -32,000 30,266,000          -6,000                          
          proceeds from principal payments on note receivable collateralized by op units
                                                                                     
          net proceeds from exercise of stock options
                         318,000 4,254,000 1,889,000 1,200,000 726,000 944,000 233,000 603,000 470,000 1,757,000 -1,000 371,000 799,000    1,132,000 -1,000 300,000 13,000 118,000 322,000 132,000 970,000 378,000 166,000 1,495,000 1,056,000 324,000 3,917,000 1,635,000 2,793,000 3,694,000 2,444,000 1,609,000 1,947,000 8,558,000 1,396,000 3,218,000 487,000    1,045,000 238,000 634,000 306,000 301,000 732,000 -19,000        
          distributions to minority investors
                                                                                      
          redemption of preferred operating partnership units for common stock
                                                                                      
          preferred operating partnership units
                                                                                      
          additional paid-in capital
                                                                                      
          establishment of finance lease assets and lease liabilities
                                                                                      
          non-cash interest expense related to fair value of life storage public bonds and amortization of discount on equity portion of exchangeable senior notes
                                                                                      
          compensation expense related to stock-based awards
                  6,994,000 6,940,000 5,499,000 5,955,000 5,644,000 5,245,000 4,542,000 4,656,000 4,012,000 4,983,000 3,652,000 4,965,000 3,452,000 4,884,000 2,980,000 3,064,000 3,035,000 3,998,000 2,954,000 2,721,000 2,613,000 3,116,000 2,726,000 2,317,000 2,289,000 2,965,000 1,990,000 2,037,000 1,915,000 2,383,000 1,710,000 1,670,000 1,590,000 1,653,000 1,142,000 1,129,000 1,056,000 1,678,000 1,121,000 1,069,000 1,562,000 1,023,000 997,000 1,364,000 957,000 1,184,000 1,585,000 1,126,000 1,055,000 1,483,000 919,000 792,000 1,261,000 899,000               
          proceeds from notes payable and revolving lines of credit
                  2,715,073,000 1,098,000,000 1,381,592,000 1,204,146,000 2,035,208,000 1,058,828,000 889,829,000 1,343,632,000 951,000,000 625,000,000 1,747,000,000 1,862,000,000 825,000,000 326,000,000 268,000,000 706,000,000 751,000,000 333,000,000 424,000,000 439,644,000 328,000,000 483,386,000 162,000,000 302,453,000 370,724,000 483,446,000 169,000,000                                          
          principal payments on notes payable and revolving lines of credit
                  -1,371,377,000 -1,367,329,000 -1,879,049,000 -865,819,000 -1,426,350,000 -684,607,000 -1,230,924,000 -973,741,000 -1,333,524,000 -999,616,000 -2,193,409,000 -821,980,000 -626,061,000 -374,181,000 -192,508,000 -474,119,000 -979,316,000 -299,350,000 -225,020,000 -321,915,000 -300,923,000 -318,812,000 -168,204,000 -68,535,000 -333,701,000 -498,527,000 -187,916,000                                          
          redemption of operating partnership units held by noncontrolling interests
                     -1,113,000 -832,000 -2,672,000 -316,000          -2,558,000 -756,000 -1,754,000                                          
          redemption of preferred b units for cash
                     -1,125,000 -3,375,000                                                              
          redemption of preferred units for cash
                   -5,000,000                                                                  
          non-cash interest expense related to amortization of discount on equity component of exchangeable senior notes
                             1,233,000 1,233,000 1,209,000 1,209,000 1,186,000 1,185,000 1,162,000 1,162,000 1,140,000 1,176,000 1,209,000 1,276,000 1,268,000 1,290,000 1,269,000 1,264,000 1,243,000 1,240,000 1,233,000 1,112,000 805,000 696,000 697,000 679,000 679,000 663,000 662,000                              
          investment in debt securities
                                                                                      
          repurchase of exchangeable senior notes
                                     -21,801,000 -5,000 -58,464,000 -190,000    -3,000 -2,553,000 -19,639,000                                      
          notes payable assumed
                                                                                      
          equity in earnings of unconsolidated real estate ventures - gain on sale of real estate assets and purchase of joint venture partner's interest
                                                                                    
          distributions from unconsolidated real estate ventures in excess of earnings
                      3,176,000 3,409,000 2,795,000 2,395,000 1,614,000 1,163,000 1,863,000 1,796,000 843,000 1,715,000 2,539,000 1,606,000 1,418,000 1,602,000 1,732,000 1,632,000 1,620,000 2,114,000 1,501,000 1,069,000 1,133,000 1,242,000 1,123,000 463,000 1,135,000 938,000 998,000 511,000 561,000 858,000 2,601,000 521,000 562,000 2,403,000 1,024,000 1,614,000 770,000 1,154,000                           
          principal payments on notes payable to trusts
                                 -30,928,000 -67,012,000                                                 
          proceeds from principal payments on notes receivable collateralized by op units and preferred op units
                                                                                      
          contribution of preferred op units to unconsolidated real estate venture
                                                                                      
          investments in unconsolidated real estate ventures
                                                                                      
          value of preferred operating partnership units issued
                                                                                      
          issuance of preferred op units for additional investment in unconsolidated real estate venture
                                                                                      
          value of operating partnership and preferred operating partnership units issued
                                                                                      
          proceeds from principal payments on note receivable collateralized by preferred op units
                             7,987,000                                                         
          establishment of operating lease right of use assets and lease liabilities
                                                                                      
          value of operating partnership units issued
                                                                                      
          gain on real estate transactions and impairment of real estate
                                                                                      
          other noncontrolling interests
                                                                                      
          proceeds from sale of real estate assets, investments in real estate ventures and other assets
                                    569,000 51,136,000 753,000 293,600,000 18,464,000                                            
          non-cash interest expense related to amortization of premium on notes payable
                                             -44,000 -132,000 -342,000 -354,000 -363,000 -364,000 -935,000 -747,000                                  
          gain on sale of real estate assets and purchase of joint venture partners' interests
                                             -4,767,000 -37,509,000                                        
          gain on real estate transactions, earnout on prior acquisitions and impairment of real estate
                                                                                      
          proceeds from termination of interest rate cap
                                             1,650,000                                      
          payment of earnout from prior acquisition
                                                                                     
          cash, cash equivalents, and restricted cash end of the period
                                     6,107,000 -2,523,000                                                
          tax effect from vesting of restricted stock grants and option exercises
                                                                                      
          distribution of real estate from investments in unconsolidated real estate ventures
                                                                                      
          disposition of real estate assets
                                                                                      
          operating partnership units redeemed
                                                                                      
          acquisition of noncontrolling interests
                                                                                      
          operating partnership units issued
                                                                                      
          loss on real estate transactions and impairment of real estate
                                                                                      
          gain on real estate transactions, earnout from prior acquisition and impairment of real estate
                                                                                      
          receivables from related parties and affiliated real estate joint ventures
                                         1,771,000 58,000 1,575,000 -1,438,000 444,000 -797,000 4,598,000 -2,878,000 811,000 -945,000 1,065,000 -2,367,000 505,000    -4,670,000   5,046,000 -561,000 3,102,000  844,000 549,000  2,415,000 352,000                  
          acquisition of smartstop, net of cash acquired
                                                                                      
          change in restricted cash
                                         -13,084,000 -513,000 -4,533,000 1,653,000 2,558,000 -1,210,000 16,771,000 -1,265,000 204,666,000 -203,205,000 9,926,000 -10,105,000 960,000 -5,554,000 -625,000 1,425,000      1,495,000    806,000 -737,000 6,246,000   3,811,000   236,000 -1,114,000      1,615,000  -486,000 -1,080,000 -6,322,000 
          purchase/issuance of notes receivable
                                             -7,899,000 -7,874,000 -10,656,000                                      
          net proceeds from the issuance of 2015 exchangeable senior notes
                                                                                      
          purchase of interest rate cap
                                                                                      
          net increase in cash and cash equivalents
                                         -8,049,000        -1,039,733,000 939,639,000   -1,553,000    -125,233,000 171,357,000 4,790,000 -141,894,000 147,927,000 11,091,000       -30,559,000   -73,761,000              
          cash and cash equivalents, beginning of the period
                                         43,858,000 75,799,000 47,663,000 126,723,000 30,785,000 26,484,000 46,750,000 131,950,000 63,972,000 17,377,000 70,801,000  28,653,000 24,329,000  
          cash and cash equivalents, end of the period
                                         -8,049,000 32,084,000 2,337,000 29,311,000 25,166,000 -22,366,000 -8,695,000 49,753,000 -1,039,733,000 939,639,000 130,589,000 45,304,000 -1,553,000 -4,729,000 6,930,000 47,015,000 -125,233,000 171,357,000 35,575,000 -141,894,000 147,927,000 37,575,000 -1,292,000 -7,368,000 42,555,000 -6,556,000 -80,386,000 108,740,000 -30,559,000 77,073,000 54,478,000 -73,761,000 164,827,000 21,010,000 -3,960,000 10,679,000 35,111,000  147,436,000 -6,811,000 11,061,000 -87,949,000 82,756,000 12,286,000  
          gain on sale of real estate assets and purchase of joint venture partner's interest
                                                                                      
          loss on real estate transactions, earnout from prior acquisition and impairment of real estate
                                                                                     
          gain on purchase of joint venture partner's interest
                                                                                      
          net decrease in cash and cash equivalents
                                           2,337,000 -14,547,000  -22,366,000 -8,695,000 -26,046,000    -2,359,000                                -12,043,000  
          redemption of operating partnership units held by noncontrolling interests for common stock:
                                                                                      
          loss on earnout from prior acquisition
                                                                                      
          gain on real estate transactions, earnout from prior acquisition and sale of other assets
                                                                                      
          property casualty loss
                                                                                      
          gain on real estate transactions and earnout from prior acquisition
                                                                                     
          net proceeds from the issuance of exchangeable senior notes
                                                                                      
          proceeds from notes payable and lines of credit
                                              534,095,000 296,904,000 195,976,000 403,049,000 826,613,000 601,372,000 290,768,000 411,707,000 84,000,000 130,800,000 291,157,000 96,895,000 186,184,000 81,776,000 314,174,000 119,511,000 206,970,000 105,556,000 155,828,000 108,858,000 27,031,000 96,651,000 7,442,000 105,333,000                 
          principal payments on notes payable and lines of credit
                                              -342,618,000 -190,064,000 -32,859,000 -297,506,000 -42,408,000 -744,778,000 -228,878,000 -220,841,000                                 
          gain on sale of real estate assets and purchase of joint venture partners’ interests
                                                -26,923,000 -2,857,000                                  
          loss on real estate transactions and earnout from prior acquisition
                                                -1,544,000                                      
          loss on real estate transactions and earnout from prior acquisitions
                                                                                     
          loss on extinguishment of debt related to portfolio acquisition
                                                                                      
          gain on sale of real estate assets
                                                                                     -1,749,000 
          paid-in capital
                                                                                      
          notes payable assumed and immediately defeased
                                                                                      
          repurchase of 2013 exchangeable senior notes
                                                                                      
          loss on earnout related to prior acquisitions
                                                                                      
          loss on earnout related to prior acquisition
                                                     -5,285,000                                
          non-cash interest benefit related to amortization of premium on notes payable
                                                     -729,000                                 
          gain on purchase of joint venture partners’ interests
                                                                                     
          redemption of operating partnership units held by noncontrolling interest
                                                                                      
          notes payable issued to seller
                                                                                      
          purchase of notes receivable
                                                                                      
          adjustments to reconcile net income to net cash provided by operating activities:
                                                                                      
          acquisition, development and redevelopment of real estate assets
                                                                                      
          non-cash interest expense related to amortization of discount on exchangeable senior notes
                                                         834,000   444,000 440,000 440,000 428,000 416,000 416,000 404,000 430,000 563,000 841,000               
          net proceeds from issuance of exchangeable senior notes
                                                                                     
          principal payments on notes payable and lines of credit, including defeasance
                                                                                      
          gain on purchase of joint venture partners’ interest
                                                                                      
          return of investment in real estate ventures
                                                            356,000 1,492,000                        
          gain on purchase of joint venture partner’s interest
                                                                                      
          distributions from real estate ventures in excess of earnings
                                                            1,456,000 -403,000 589,000 -504,000 3,856,000 1,313,000 1,735,000 1,744,000 1,351,000 1,529,000 1,596,000 1,540,000 1,601,000 1,176,000 1,224,000   681,000 2,136,000 1,143,000 977,000 1,303,000    217,000 
          development and construction of real estate assets
                                                                                   -1,806,000 -1,067,000 -22,046,000 
          investments in real estate ventures
                                                                                   -1,714,000 -8,000 -82,000 
          non-cash reduction in interest expense related to amortization of premium on note payable
                                                                                      
          loss on sublease
                                                                                      
          proceeds from sale of properties to joint venture
                                                                  15,750,000                  
          purchase of affiliated joint venture note receivable
                                                                                      
          proceeds from the sale of common stock, net of transaction costs
                                                                                      
          investments from noncontrolling interests
                                                                                      
          proceeds from the sale of common stock
                                                                                      
          distributions to noncontrolling interests in operating partnership
                                                                                      
          gain on repurchase of exchangeable senior notes
                                                                                      
          non-cash unrecovered development and acquisition costs
                                                                                      
          severance costs
                                                                                      
          investments from other noncontrolling interests
                                                                                      
          unrecovered development and acquisition costs
                                                                     22,000                 
          net cash from (used in) financing activities
                                                                                      
          loss on investments available for sale
                                                                                      
          severance costs associated with wind-down of development program
                                                                                     
          net proceeds from sale of investments available for sale
                                                                                      
          proceeds from issuance of common shares
                                                                             -427,000    -28,000   264,475,000 
          interest paid, net of amounts capitalized
                                                                     14,254,000 16,667,000 15,085,000      12,018,000   12,209,000 10,964,000     
          conversion of operating partnership units held by noncontrolling interests for common stock
                                                                                     
          receivables from related parties
                                                                           -2,724,000 -2,355,000 9,914,000 -8,816,000 4,729,000 4,797,000 7,093,000  -1,010,000 247,000 -2,934,000 
          proceeds from notes payable and line of credit
                                                                       150,586,000               
          principal payments on notes payable and line of credit
                                                                                      
          fair value adjustment of obligation associated with preferred operating partnership units
                                                                                      
          loss on sale of investments available for sale
                                                                          1,415,000            
          stock compensation expense
                                                                        820,000 1,184,000 800,000 736,000 439,000 436,000 348,000 361,000 630,000 386,000     
          income allocated to minority interests
                                                                        619,000 500,000 371,000 756,000           
          net proceeds from sale of (purchases of) investments available for sale
                                                                                      
          proceeds from exchangeable senior notes
                                                                           250,000,000         
          proceeds from notes payable, notes payable to trusts and line of credit
                                                                        679,000 2,202,000 1,182,000 3,955,000 693,000 45,454,000 36,540,000 31,524,000       
          loan to preferred operating partnership unit holder
                                                                                      
          minority interest investments
                                                                                    8,086,000 
          redemption of operating partnership units held by minority interest
                                                                                      
          distributions to operating partnership units held by minority interest
                                                                                      
          net proceeds from (purchases of) investments available for sale
                                                                         21,812,000            
          loan to preferred op unit holder
                                                                                      
          accounts payable
                                                                          3,441,000         -338,000 -1,825,000 1,615,000 
          net cash provided by operating activities
                                                                          24,199,000            
          net cash (used in) provided by financing activities
                                                                                      
          net increase (decrease) in cash and cash equivalents
                                                                          3,633,000            
          distributions from operations of real estate ventures in excess of earnings
                                                                           1,122,000           
          net purchases of short-term investments
                                                                                      
          principal payments received on notes receivable
                                                                              1,688,000 5,000 -246,000 364,000     
          net cash provided by financing activities
                                                                                      
          amortization of deferred stock compensation
                                                                                      
          gain allocated to minority interests
                                                                             400,000 400,000 306,000 225,000 54,000     
          accrued interest on notes receivable
                                                                                      
          purchase of short-term investments
                                                                                      
          distributions to operating partnership units held by minority interests
                                                                                      
          acquisitions:
                                                                                      
          investment in real estate ventures
                                                                                      
          amortization of discount on putable preferred interests in consolidated joint ventures
                                                                                     1,043,000 
          minority interest—fidelity preferred return
                                                                                     3,136,000 
          member units granted to employees
                                                                                     1,205,000 
          investments in trust preferred securities
                                                                                      
          acquisition of storage usa
                                                                                      
          increase in cash resulting from de-consolidation of real estate assets and distribution of equity ownership in extra space development and other properties
                                                                                      
          payments from centershift and extra space development
                                                                                      
          payments on other liabilities
                                                                                     -16,000 
          net payments to related parties and putable preferred interests in consolidated joint ventures
                                                                                      
          member contributions
                                                                                      
          return paid on class b, c and e member units
                                                                                      
          redemption of units
                                                                                     -19,130,000 
          minority interest distributions
                                                                                     -30,000 
          minority interest redemption by fidelity
                                                                                      
          preferred return paid to fidelity
                                                                                     -7,022,000 
          cash and cash equivalents, beginning of the year
                                                                                      
          cash and cash equivalents, end of the year
                                                                                      
          payables to related parties
                                                                                     -4,876,000 
          notes payable
                                                                                      
          notes receivable
                                                                                      
          accounts payable and other liabilities
                                                                                      
          minority interest in operating partnership
                                                                                      
          member units
                                                                                      
          member units issued in exchange for receivables
                                                                                      
          member units issued to repay notes and related party payables
                                                                                      
          redemption of units in exchange for note payable
                                                                                      
          adjustment to establish minority interest in operating partnership
                                                                                      
          redemption of units in exchange for land
                                                                                      
          restricted stock grants to employees
                                                                                      
          conversion of operating partnership units held by minority interests for common stock
                                                                                      
          net cash used in investing activities
                                                                                      
          proceeds from exercise of stock options
                                                                                36,000 91,000     
          proceeds from notes payable, notes payable to trust and line of credit
                                                                                 30,635,000     
          net loss
                                                                                  -2,859,000 -1,220,000 -640,000 -18,145,000 
          adjustments to reconcile net loss to net cash from operating activities:
                                                                                      
          amortization of deferred compensation
                                                                                      
          minority interest - fidelity preferred return
                                                                                      
          loss allocated to minority interests
                                                                                     -2,377,000 
          distributions from cumulative earnings from real estate ventures
                                                                                      
          interest accrued on notes receivable
                                                                                      
          increase in cash due to changes in:
                                                                                      
          advances to centershift and extra space development
                                                                                      
          proceeds from line of credit and notes payable
                                                                                  528,863,000 69,469,000 53,257,000  
          payments on line of credit and notes payable
                                                                                   -40,534,000 -2,765,000  
          redemption of operating partnership units
                                                                                      
          distributions to operating partnership unit holders
                                                                                   -621,000 -621,000 -304,000 
          income allocated to other minority interests
                                                                                   -110,000 -56,000  
          loss on sale of real estate assets
                                                                                      
          distributions of cumulative earnings from real estate ventures
                                                                                   62,000 69,000  
          purchase of equipment
                                                                                   -286,000 -197,000 -1,375,000 
          minority interest investment (redemption) by fidelity
                                                                                      
          accrued interest on advances to centershift
                                                                                      
          payments from (advances to) centershift and extra space development
                                                                                     3,562,000 
          net advances from (payments to) related parties and putable preferred interests in consolidated joint ventures
                                                                                     -29,590,000 
          increase in cash resulting from de-consolidation of real estate assets
                                                                                     449,000 
          proceeds from borrowings
                                                                                     376,343,000 
          payments on borrowings
                                                                                     -305,931,000 
          member units issued in exchange for cash
                                                                                     19,691,000 
          return paid on member units
                                                                                     -7,180,000 
          redemption of fidelity minority interest
                                                                                     -15,558,000 
          net decrease in cash
                                                                                     20,260,000 
          cash, beginning of period
                                                                                     11,746,000 
          cash, end of period
                                                                                     32,006,000 
          loss allocated to minority interest
                                                                                      
          equity in earnings of real estate ventures
                                                                                      
          investment in real estate assets
                                                                                      
          return paid on class c and class e units