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CONSOLIDATED STATEMENT OF CHANGES IN CAPITAL OF ERP OPERATING LIMITED PARTNERSHIP (Unaudited) (USD $) In Thousands, unless otherwise specified | Total | PREFERRED UNITS | General Partner [Member] | Limited Partner [Member] | Accumulated Other Comprehensive (Loss) | Partially Owned Properties [Member]
--- | --- | --- | --- | --- | --- | ---
Balance, beginning of year - Noncontrolling Interest at Dec. 31, 2013 |  |  |  |  |  | $ 126,583
Balance, beginning of year at Dec. 31, 2013 |  | 50,000 | 10,612,363 | 211,412 | (155,162) |
OP Unit Issuance: |  |  |  |  |  |
Conversion of OP Units held by Limited Partners into OP Units held by General Partner |  |  | 1,430 | (1,430) |  |
Exercise of EQR share options |  |  | 25,685 |  |  |
Stock Issued During Period, Value, Employee Stock Purchase Plan |  |  | 2,218 |  |  |
Share-based employee compensation expense: |  |  |  |  |  |
EQR restricted shares |  |  | 6,983 |  |  |
EQR share options |  |  | 5,330 |  |  |
EQR ESPP discount |  |  | 587 |  |  |
Payments For Repurchase Of Op Units |  |  | (1,777) |  |  |
Net income available to Units - General Partner |  |  | 189,753 |  |  |
OP Units - General Partner distributions |  |  | (361,279) |  |  |
Supplemental Executive Retirement Plan (SERP) |  |  | 4,212 |  |  |
Acquisition Noncontrolling Interests Partially Owned Properties |  |  | (2,308) |  |  | (2,244)
Change in market value of Redeemable Limited Partners |  |  | (80,615) |  |  |
Adjustment for Limited Partners ownership in Operating Partnership |  |  | 4,146 | (4,146) |  |
Issuance of LTIP Units to Noncontrolling Interests |  |  |  | 3 |  |
Equity compensation associated with Units - Limited Partners |  |  |  | 10,319 |  |
Net Income (Loss) Allocated to Limited Partners |  |  |  | 7,535 |  |
Net (income) attributable to Noncontrolling Interests – Partially Owned Properties | 1,092 |  |  |  |  | 1,092
Units - Limited Partners distributions |  |  |  | (14,364) |  | (5,272)
Change in carrying value of Redeemable Limited Partners |  |  |  | 3,709 |  |
Other comprehensive (loss) income – derivative instruments: |  |  |  |  |  |
Unrealized holding (losses) arising during the period | (21,881) |  |  |  | (21,881) |
Losses reclassified into earnings from other comprehensive income | (8,335) |  |  |  | 8,335 |
Currency translation adjustments arising during the period | 1,718 |  |  |  | 1,718 |
Contributions by Noncontrolling Interests | 5,684 |  |  |  |  | 5,684
Balance, end of period - Noncontrolling Interest at Jun. 30, 2014 |  |  |  |  |  | 125,843
Balance, end of period at Jun. 30, 2014 |  | $ 50,000 | $ 10,406,728 | $ 213,038 | $ (166,990) |

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