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CONSOLIDATED STATEMENTS OF CHANGES IN CAPITAL OF ERP OPERATING LIMITED PARTNERSHIP - 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, 2021 |  |  | $ 37,280 | $ 10,951,940 | $ 214,094 | $ (34,272) |  |
Balance, beginning of year at Dec. 31, 2021 |  |  |  |  |  |  |  | $ 18,166
Conversion of OP Units held by Limited Partners into OP Units held by General Partner |  |  |  | 11,923 | (11,923) |  |  |
Issuance of OP Units |  |  |  | 139,623 |  |  |  |
Exercise of EQR share options |  |  |  | 25,069 |  |  |  |
EQR's Employee Share Purchase Plan (ESPP) |  |  |  | 4,178 |  |  |  |
EQR restricted shares |  |  |  | 11,595 | 1 |  |  |
EQR share options |  |  |  | 2,321 |  |  |  |
EQR ESPP discount |  |  |  | 796 |  |  |  |
Net income available to Units - General Partner |  | $ 773,821 |  | 773,821 |  |  |  |
OP Units - General Partner distributions |  |  |  | (942,047) |  |  |  |
Offering costs |  |  |  | (783) |  |  |  |
Supplemental Executive Retirement Plan (SERP) |  |  |  | (269) |  |  |  |
Acquisition of Noncontrolling Interest - Partially Owned Properties |  |  |  | (27,383) |  |  |  |
Change in market value of Redeemable Limited Partners |  |  |  | 176,490 |  |  |  |
Unrealized holding gains (losses) arising during the year | $ 20,654 | 20,654 |  |  |  | 20,654 |  |
Losses reclassified into earnings from other comprehensive income | 11,071 | 11,071 |  |  |  | 11,071 |  |
Equity compensation associated with Units - Limited Partners |  |  |  |  | 19,104 |  |  |
Net income available to Units - Limited Partners |  | 26,310 |  |  | 26,310 |  |  |
Units - Limited Partners distributions |  |  |  |  | (30,407) |  |  |
Change in carrying value of Redeemable Limited Partners |  |  |  |  | 4,214 |  |  |
Adjustment for Limited Partners ownership in Operating Partnership |  |  |  | 11,432 | (11,432) |  |  |
Distributions declared per Unit outstanding |  |  |  |  |  |  | $ 2.50 |
Net income attributable to Noncontrolling Interests | 806,995 | 806,995 |  |  |  |  |  | 3,774
Contributions by Noncontrolling Interests |  |  |  |  |  |  |  | 603
Distributions to Noncontrolling Interests |  |  |  |  |  |  |  | (18,469)
Acquisitions of Noncontrolling Interests - Partially Owned Properties |  |  |  |  |  |  |  | (4,795)
Balance, end of year at Dec. 31, 2022 |  |  | 37,280 | 11,138,706 | 209,961 | (2,547) |  |
Balance, end of year at Dec. 31, 2022 |  |  |  |  |  |  |  | (721)
Conversion of OP Units held by Limited Partners into OP Units held by General Partner |  |  |  | 23,948 | (23,948) |  |  |
Exercise of EQR share options |  |  |  | 23,632 |  |  |  |
EQR's Employee Share Purchase Plan (ESPP) |  |  |  | 3,517 |  |  |  |
EQR restricted shares |  |  |  | 12,486 | 1 |  |  |
EQR share options |  |  |  | 4,628 |  |  |  |
EQR ESPP discount |  |  |  | 644 |  |  |  |
OP Units repurchased and retired | (49,100) |  |  | 49,105 |  |  |  |
Net income available to Units - General Partner |  | 832,348 |  | 832,348 |  |  |  |
OP Units - General Partner distributions |  |  |  | (1,004,904) |  |  |  |
Supplemental Executive Retirement Plan (SERP) |  |  |  | 32,078 |  |  |  |
Acquisition of Noncontrolling Interest - Partially Owned Properties |  |  |  | (900) |  |  |  |
Change in market value of Redeemable Limited Partners |  |  |  | 7,667 |  |  |  |
Unrealized holding gains (losses) arising during the year | 4,514 | 4,514 |  |  |  | 4,514 |  |
Losses reclassified into earnings from other comprehensive income | 3,737 | 3,737 |  |  |  | 3,737 |  |
Equity compensation associated with Units - Limited Partners |  |  |  |  | 16,430 |  |  |
Net income available to Units - Limited Partners |  | 26,710 |  |  | 26,710 |  |  |
Units - Limited Partners distributions |  |  |  |  | (30,107) |  |  |
Change in carrying value of Redeemable Limited Partners |  |  |  |  | 21,358 |  |  |
Adjustment for Limited Partners ownership in Operating Partnership |  |  |  | 18,099 | (18,099) |  |  |
Distributions declared per Unit outstanding |  |  |  |  |  |  | 2.65 |
Net income attributable to Noncontrolling Interests | 868,488 | 868,488 |  |  |  |  |  | 6,340
Contributions by Noncontrolling Interests |  |  |  |  |  |  |  | 9
Distributions to Noncontrolling Interests |  |  |  |  |  |  |  | (5,818)
Acquisitions of Noncontrolling Interests - Partially Owned Properties |  |  |  |  |  |  |  | (2,837)
Consolidation of previously unconsolidated entities |  |  |  |  |  |  |  | 4,021
Balance, end of year at Dec. 31, 2023 |  |  | 37,280 | 11,042,844 | 202,306 | 5,704 |  |
Balance, end of year at Dec. 31, 2023 |  |  |  |  |  |  |  | 994
Partial redemption |  |  | (20,125) |  |  |  |  |
Conversion of OP Units held by Limited Partners into OP Units held by General Partner |  |  |  | 8,770 | (8,770) |  |  |
Exercise of EQR share options |  |  |  | 23,000 |  |  |  |
EQR's Employee Share Purchase Plan (ESPP) |  |  |  | 3,522 |  |  |  |
EQR restricted shares |  |  |  | 13,907 | 2 |  |  |
EQR share options |  |  |  | 3,441 |  |  |  |
EQR ESPP discount |  |  |  | 711 |  |  |  |
OP Units repurchased and retired | (38,500) |  |  | 38,474 |  |  |  |
Net income available to Units - General Partner |  | 1,032,774 |  | 1,032,774 |  |  |  |
OP Units - General Partner distributions |  |  |  | (1,023,922) |  |  |  |
Supplemental Executive Retirement Plan (SERP) |  |  |  | (594) |  |  |  |
Acquisition of Noncontrolling Interest - Partially Owned Properties |  |  |  | 1,120 |  |  |  |
Change in market value of Redeemable Limited Partners |  |  |  | (49,366) |  |  |  |
Unrealized holding gains (losses) arising during the year | (3,989) | (3,989) |  |  |  | (3,989) |  |
Losses reclassified into earnings from other comprehensive income | 2,499 | 2,499 |  |  |  | 2,499 |  |
Equity compensation associated with Units - Limited Partners |  |  |  |  | 15,462 |  |  |
Net income available to Units - Limited Partners |  | 28,932 |  |  | 28,932 |  |  |
Units - Limited Partners distributions |  |  |  |  | (30,583) |  |  |
Change in carrying value of Redeemable Limited Partners |  |  |  |  | 51 |  |  |
Adjustment for Limited Partners ownership in Operating Partnership |  |  |  | 5,458 | (5,458) |  |  |
Distributions declared per Unit outstanding |  |  |  |  |  |  | $ 2.70 |
Net income attributable to Noncontrolling Interests | $ 1,070,975 | $ 1,070,975 |  |  |  |  |  | 6,212
Contributions by Noncontrolling Interests |  |  |  |  |  |  |  | 583
Distributions to Noncontrolling Interests |  |  |  |  |  |  |  | (3,258)
Acquisitions of Noncontrolling Interests - Partially Owned Properties |  |  |  |  |  |  |  | (4,249)
Other |  |  |  |  |  |  |  | (1,000)
Balance, end of year at Dec. 31, 2024 |  |  | $ 17,155 | $ 11,023,191 | $ 201,942 | $ 4,214 |  |
Balance, end of year at Dec. 31, 2024 |  |  |  |  |  |  |  | $ (718)

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