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CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (Unaudited) - 9 months ended Sep. 30, 2015 - USD ($) $ in Thousands | Total | PREFERRED SHARES | COMMON SHARES, $0.01 PAR VALUE | Additional Paid-in Capital [Member] | RETAINED EARNINGS | Accumulated Other Comprehensive (Loss) | Noncontrolling Interest [Member] | Partially Owned [Domain]
--- | --- | --- | --- | --- | --- | --- | --- | ---
Balance, beginning of year at Dec. 31, 2014 | $ 10,368,456 | $ 50,000 | $ 3,629 | $ 8,536,340 | $ 1,950,639 | $ (172,152) |  |
Balance, beginning of year at Dec. 31, 2014 | 339,320 |  |  |  |  |  | $ 214,411 | $ 124,909
PREFERRED SHARES |  |  |  |  |  |  |  |
Partial redemption of 8.29% Series K Cumulative Redeemable | 9,820 | (9,820) |  |  |  |  |  |
Common Share Issuance: |  |  |  |  |  |  |  |
Conversion of OP Units into Common Shares |  |  | 2 | 4,376 |  |  | (4,378) |
Exercise of share options |  |  | 8 | 37,039 |  |  |  |
PAID IN CAPITAL |  |  |  |  |  |  |  |
EQR's Employee Share Purchase Plan (ESPP) |  |  |  | 3,376 |  |  |  |
Conversion of restricted shares to restricted units |  |  |  | (70) |  |  | 70 |
Share-based employee compensation expense: |  |  |  |  |  |  |  |
Restricted shares |  |  | 2 | 12,689 |  |  |  |
Share options |  |  |  | 2,887 |  |  |  |
ESPP discount |  |  |  | 692 |  |  |  |
Offering costs |  |  |  | (69) |  |  |  |
Supplemental Executive Retirement Plan (SERP) |  |  |  | (1,325) |  |  |  |
Change in market value of Redeemable Noncontrolling Interests – Operating Partnership | 20,262 |  |  | (20,262) |  |  |  |
Adjustment for Noncontrolling Interests ownership in Operating Partnership |  |  |  | 8,470 |  |  | (8,470) |
Net income attributable to controlling interests | 665,634 |  |  |  | 665,634 |  |  |
Common Share distributions |  |  |  |  | (603,337) |  |  |
Preferred Share distributions |  |  |  |  | (2,557) |  |  |
Premium on redemption of Preferred Shares | (2,789) |  |  |  | (2,789) |  |  |
Other comprehensive income (loss) – derivative instruments: |  |  |  |  |  |  |  |
Unrealized holding gains arising during the period | 1,796 |  |  |  |  | 1,796 |  |
Losses reclassified into earnings from other comprehensive income | (13,647) |  |  |  |  | 13,647 |  |
Currency translation adjustments arising during the period | (311) |  |  |  |  | (311) |  |
Issuance of restricted units to Noncontrolling Interests |  |  |  |  |  |  | 3 |
Equity compensation associated with Noncontrolling Interests |  |  |  |  |  |  | 18,969 |
Net income attributable to Noncontrolling Interests | (26,191) |  |  |  |  |  | 26,191 |
Distributions to Noncontrolling Interests |  |  |  |  |  |  | (23,719) | (5,389)
Change in carrying value of Redeemable Noncontrolling Interests – Operating Partnership | 1,590 |  |  |  |  |  | (1,590) |
Net income attributable to Noncontrolling Interests | 2,473 |  |  |  |  |  |  | 2,473
Deconsolidation of previously consolidated Noncontrolling Interests |  |  |  |  |  |  |  | (117,350)
Balance, end of period at Sep. 30, 2015 | 10,478,534 | $ 40,180 | $ 3,641 | $ 8,584,143 | $ 2,007,590 | $ (157,020) |  |
Balance, end of period at Sep. 30, 2015 | $ 226,130 |  |  |  |  |  | $ 221,487 | $ 4,643

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