XML 40 R28.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Business (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2014
Business [Abstract] |
Schedule of Real Estate Properties | The ownership breakdown includes (table does not include various uncompleted development properties):
|  | Properties |  | Apartment Units
Wholly Owned Properties |  | 368 |  |  | 99,789 |
Master-Leased Properties – Consolidated |  | 3 |  |  | 853 |
Partially Owned Properties – Consolidated |  | 19 |  |  | 3,771 |
Partially Owned Properties – Unconsolidated |  | 4 |  |  | 1,669 |
Military Housing |  | 2 |  |  | 5,005 |
|  | 396 |  |  | 111,087 |

X
- Details
Name: | eqr_BusinessAbstract
Namespace Prefix: | eqr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of real estate properties and units in those properties that are included in the discussion of the nature of an entity's operations. + References No definition available. + Details
Name: | us-gaap_ScheduleOfRealEstatePropertiesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration