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Capital and Redeemable Limited Partners of ERP Operating Limited Partnership (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2016 | Dec. 31, 2015
Common Shares And Units Outstanding | 380,199,636 |
Exercise of EQR share options | 582,435 |
EQR’s Employee Share Purchase Plan (ESPP) | 15,506 |
Restricted share grants, net | 137,057 |
Conversion of Limited Partner OP Units to EQR Common Shares | 5,577 |
Units Ownership Interest in Operating Partnership | 3.90% |
ERPOP [Member] |  |
Common Shares And Units Outstanding | 380,199,636 | 379,182,608
Exercise of EQR share options | 582,435 |
EQR’s Employee Share Purchase Plan (ESPP) | 15,506 |
Restricted share grants, net | 137,057 |
Restricted unit grants, net | 282,030 |
Total Units Outstanding | 14,703,617 | 14,427,164
Conversion of Limited Partner OP Units to EQR Common Shares | (5,577) |
Units Ownership Interest in Operating Partnership | 3.90% |
Redeemable Limited Partners | $ 521,080 | $ 566,783
Limited Partners Change In Redemption Value | (55,478) |
Limited Partners Change In Carrying Value | $ 9,775 |

X
- Definition Number of all classes of common stock held by shareholders, which is net of related treasury stock, and number of all Operating Partnership Units held by various individuals and entities that contributed their properties to the Operating Partnership. + References No definition available. + Details
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- Definition Number of units issued during the period as a result of a long-term incentive plan. + References No definition available. + Details
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- Definition Change in the value of Redeemable Limited Partners Units as a result of changes in the fair value of the company's common shares during the period. + References No definition available. + Details
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- Definition The greater of carrying value (book value) or fair market value of an entity's issued and outstanding Units which is not included within Partner's Capital in Capital. Represents a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the units to another class of equity. + References No definition available. + Details
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- Definition The number of restricted shares granted during the reporting period, net of cancellations. + References No definition available. + Details
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- Definition Number of all Operating Partnership Units held by various individuals and entities that contributed their properties to the Operating Partnership. These units are referred to as noncontrolling interests. + References No definition available. + Details
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