v3.26.1
CONSOLIDATED STATEMENTS OF CHANGES IN CAPITAL OF ERP OPERATING LIMITED PARTNERSHIP (Unaudited) - USD ($)
$ in Thousands
Total
ERPOP [Member]
Preferred Stock [Member]
ERPOP [Member]
GENERAL PARTNER [Member]
ERPOP [Member]
LIMITED PARTNERS [Member]
ERPOP [Member]
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) [Member]
ERPOP [Member]
DISTRIBUTIONS [Member]
ERPOP [Member]
PARTIALLY OWNED PROPERTIES [Member]
ERPOP [Member]
Balance, beginning of year at Dec. 31, 2024     $ 17,155 $ 11,023,191 $ 201,942 $ 4,214    
Balance, beginning of year at Dec. 31, 2024               $ (718)
Conversion of OP Units held by Limited Partners into OP Units held by General Partner       8,773 (8,773)      
Exercise of EQR share options       5,357        
EQR's Employee Share Purchase Plan (ESPP)       1,413        
EQR restricted shares       9,339 4      
EQR share options       2,656        
EQR ESPP discount       258        
Net income available to Units - General Partner   $ 448,237   448,237        
OP Units - General Partner distributions       (526,428)        
Offering costs       (481)        
Supplemental Executive Retirement Plan (SERP)       (740)        
Change in market value of Redeemable Limited Partners       19,568        
Adjustment for Limited Partners ownership in Operating Partnership       (1,692) 1,692      
Equity compensation associated with Units - Limited Partners         10,593      
Net income available to Units - Limited Partners   12,328     12,328      
Units - Limited Partners distributions         (16,159)      
Change in book value of Redeemable Limited Partners         1,090      
Unrealized holding gains (losses) arising during the period $ (3,550) (3,550)       (3,550)    
Losses reclassified into earnings from other comprehensive income 951 951       951    
Distributions declared per Unit outstanding             $ 1.385  
Net income attributable to Noncontrolling Interests 463,583 463,583           2,307
Distributions to Noncontrolling Interests               (4,052)
Balance, end of period at Jun. 30, 2025     17,155 10,989,451 202,717 1,615    
Balance, end of period at Jun. 30, 2025               (2,463)
Balance, beginning of year at Mar. 31, 2025     17,155 11,026,779 207,090 3,396    
Balance, beginning of year at Mar. 31, 2025               (2,989)
Conversion of OP Units held by Limited Partners into OP Units held by General Partner       4,366 (4,366)      
Exercise of EQR share options       997        
EQR's Employee Share Purchase Plan (ESPP)       471        
EQR restricted shares       4,901        
EQR share options       1,377        
EQR ESPP discount       64        
Net income available to Units - General Partner   192,001   192,001        
OP Units - General Partner distributions       (263,133)        
Offering costs       (481)        
Supplemental Executive Retirement Plan (SERP)       (851)        
Change in market value of Redeemable Limited Partners       18,813        
Adjustment for Limited Partners ownership in Operating Partnership       4,147 (4,147)      
Equity compensation associated with Units - Limited Partners         5,492      
Net income available to Units - Limited Partners   5,226     5,226      
Units - Limited Partners distributions         (7,559)      
Change in book value of Redeemable Limited Partners         981      
Unrealized holding gains (losses) arising during the period (2,046) (2,046)       (2,046)    
Losses reclassified into earnings from other comprehensive income 265 265       265    
Distributions declared per Unit outstanding             0.6925  
Net income attributable to Noncontrolling Interests 198,785 198,785           1,203
Distributions to Noncontrolling Interests               (677)
Balance, end of period at Jun. 30, 2025     17,155 10,989,451 202,717 1,615    
Balance, end of period at Jun. 30, 2025               (2,463)
Balance, beginning of year at Dec. 31, 2025     17,155 11,022,169 192,135 2,175    
Balance, beginning of year at Dec. 31, 2025               (789)
Conversion of OP Units held by Limited Partners into OP Units held by General Partner       5,932 (5,932)      
Exercise of EQR share options       6,924        
EQR's Employee Share Purchase Plan (ESPP)       1,526        
EQR restricted shares       14,253 2      
EQR share options       2,464        
EQR ESPP discount       313        
OP Units repurchased and retired 219,400     (219,385)        
Net income available to Units - General Partner   203,503   203,503        
OP Units - General Partner distributions       (526,946)        
Supplemental Executive Retirement Plan (SERP)       136        
Change in market value of Redeemable Limited Partners       16,823        
Adjustment for Limited Partners ownership in Operating Partnership       1,011 (1,011)      
Equity compensation associated with Units - Limited Partners         3,456      
Net income available to Units - Limited Partners   4,454     4,454      
Units - Limited Partners distributions         (13,459)      
Change in book value of Redeemable Limited Partners         3,171      
Losses reclassified into earnings from other comprehensive income 573 573       573    
Distributions declared per Unit outstanding             1.405  
Net income attributable to Noncontrolling Interests 210,841 210,841           2,173
Distributions to Noncontrolling Interests               (2,542)
Balance, end of period at Jun. 30, 2026     17,155 10,495,077 182,816 2,748    
Balance, end of period at Jun. 30, 2026               (1,158)
Balance, beginning of year at Mar. 31, 2026     17,155 10,651,308 187,137 2,460    
Balance, beginning of year at Mar. 31, 2026               (1,585)
Conversion of OP Units held by Limited Partners into OP Units held by General Partner       4,237 (4,237)      
Exercise of EQR share options       6,499        
EQR's Employee Share Purchase Plan (ESPP)       440        
EQR restricted shares       7,142 2      
EQR share options       1,241        
EQR ESPP discount       96        
Net income available to Units - General Partner   113,780   113,780        
OP Units - General Partner distributions       (263,346)        
Change in market value of Redeemable Limited Partners       25,548        
Adjustment for Limited Partners ownership in Operating Partnership       (772) 772      
Equity compensation associated with Units - Limited Partners         1,749      
Net income available to Units - Limited Partners   2,501     2,501      
Units - Limited Partners distributions         (6,135)      
Change in book value of Redeemable Limited Partners         1,027      
Losses reclassified into earnings from other comprehensive income 288 288       288    
Distributions declared per Unit outstanding             $ 0.7025  
Net income attributable to Noncontrolling Interests $ 117,740 $ 117,740           1,104
Distributions to Noncontrolling Interests               (677)
Balance, end of period at Jun. 30, 2026     $ 17,155 $ 10,495,077 $ 182,816 $ 2,748    
Balance, end of period at Jun. 30, 2026               $ (1,158)