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Capital and Redeemable Limited Partners of ERP Operating Limited Partnership - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Common Shares And Units Outstanding | 380,496,999 | 379,182,608 | 377,154,145 |
Exercise of EQR share options | 815,044 | 1,456,363 | 2,086,380 |
EQR's Employee Share Purchase Plan (ESPP) | 63,909 | 68,462 | 68,807 |
EQR's restricted share grants, net | 147,689 | 168,142 | 169,722 |
Stock Repurchased and Retired During Period, Shares | 0 | 0 | (31,240) |
Conversion of restricted shares to restricted units | 0 | (1,284) | (12,146) |
Units Ownership Interest in Operating Partnership | 3.80% | 3.80% | 3.80% |
ERPOP [Member] |  |  |  |
Common Shares And Units Outstanding | 380,496,999 | 379,182,608 | 377,154,145 | 374,659,636
Exercise of EQR share options | 815,044 | 1,456,363 | 2,086,380 |
EQR's Employee Share Purchase Plan (ESPP) | 63,909 | 68,462 | 68,807 |
EQR's restricted share grants, net | 147,689 | 168,142 | 169,722 |
Restricted unit grants, net | 287,749 | 335,496 | 200,840 |
Stock Repurchased and Retired During Period, Shares | 0 | 0 | (31,240) |
Conversion of restricted shares to restricted units | 0 | 1,284 | 12,146 |
Shares Issued During Period Shares Conversion Of Units To Common Shares | (88,838) | (208,307) | (94,671) |
Total Units Outstanding | 14,626,075 | 14,427,164 | 14,298,691 | 14,180,376
Units Ownership Interest in Operating Partnership | 3.80% | 3.80% | 3.80% |
Redeemable Limited Partners | $ 442,092 | $ 566,783 | $ 500,733 | $ 363,144
Limited Partners Change In Redemption Value | (115,093) | 64,378 | 139,818 |
Limited Partners Change In Carrying Value | $ (9,598) | $ 1,672 | $ (2,229) |

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- 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 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 OP Units converted into shares of stock during the period. An example of a convertible unit is an umbrella partnership real estate investment trust unit (UPREIT unit). Subject to certain exceptions, this unit can be exchanged for Common Shares on a one-for-one basis. + 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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