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CONSOLIDATED STATEMENT OF CHANGES IN CAPITAL OF ERP OPERATING LIMITED PARTNERSHIP (Unaudited) - 3 months ended Mar. 31, 2017 - USD ($) $ in Thousands | Total | ERPOP [Member] | PREFERRED SHARES ERPOP [Member] | General Partner [Member] ERPOP [Member] | Limited Partner [Member] ERPOP [Member] | ACCUMULATED OTHER COMPREHENSIVE (LOSS) [Member] ERPOP [Member] | PARTIALLY OWNED PROPERTIES [Member] ERPOP [Member]
--- | --- | --- | --- | --- | --- | --- | ---
Balance, beginning of year at Dec. 31, 2016 |  |  | $ 37,280 | $ 10,305,707 | $ 221,297 | $ (113,909) |
Balance, beginning of year at Dec. 31, 2016 |  |  |  |  |  |  | $ 10,609
OP Unit Issuance: |  |  |  |  |  |  |
Conversion of OP Units held by Limited Partners into OP Units held by General Partner |  |  |  | 14,243 | (14,243) |  |
Exercise of EQR share options |  |  |  | 3,142 |  |  |
EQR's Employee Share Purchase Plan (ESPP) |  |  |  | 1,574 |  |  |
Share-based employee compensation expense: |  |  |  |  |  |  |
EQR restricted shares |  |  |  | 2,696 |  |  |
EQR share options |  |  |  | 4,184 |  |  |
EQR ESPP discount |  |  |  | 307 |  |  |
Net income available to Units – General Partner |  | $ 142,969 |  | 142,969 |  |  |
OP Units – General Partner distributions |  |  |  | (184,941) |  |  |
Offering costs |  |  |  | (21) |  |  |
Supplemental Executive Retirement Plan (SERP) |  |  |  | 132 |  |  |
Change in market value of Redeemable Limited Partners |  |  |  | 50,766 |  |  |
Adjustment for Limited Partners ownership in Operating Partnership |  |  |  | 11,564 | (11,564) |  |
LIMITED PARTNERS |  |  |  |  |  |  |
Conversion of OP Units held by Limited Partners into OP Units held by General Partner |  |  |  | 14,243 | (14,243) |  |
Equity compensation associated with Units – Limited Partners |  |  |  |  | 2,964 |  |
Net income available to Units – Limited Partners |  | 5,411 |  |  | 5,411 |  |
Units – Limited Partners distributions |  |  |  |  | (6,696) |  |
Change in carrying value of Redeemable Limited Partners |  |  |  |  | 31,593 |  |
Adjustment for Limited Partners ownership in Operating Partnership |  |  |  | 11,564 | (11,564) |  |
Accumulated other comprehensive income (loss) – derivative instruments: |  |  |  |  |  |  |
Losses reclassified into earnings from other comprehensive income | $ (4,583) | (4,583) |  |  |  | 4,583 |
NONCONTROLLING INTERESTS – PARTIALLY OWNED PROPERTIES |  |  |  |  |  |  |
Net income attributable to Noncontrolling Interests | 149,941 | 149,941 |  |  |  |  | 788
Contributions – Noncontrolling Interests – Partially Owned Properties | $ 125 | $ 125 |  |  |  |  | 125
Distributions to Noncontrolling Interests |  |  |  |  |  |  | (5,134)
Balance, end of period at Mar. 31, 2017 |  |  | $ 37,280 | $ 10,352,322 | $ 228,762 | $ (109,326) |
Balance, end of period at Mar. 31, 2017 |  |  |  |  |  |  | $ 6,388

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