XML 138 R120.htm IDEA: XBRL DOCUMENT
v3.22.4

Distribution Reinvestment Plan - Additional Information (Details) - shares | Dec. 31, 2022 | Sep. 30, 2014
--- | --- | ---
Distribution Reinvestment And Share Purchase Plan [Abstract] |  |
Common shares registered with distribution reinvestment and share purchase Plan (2014 DRIP) |  | 4,790,000
Number of shares available for issuance | 4,631,362 |

X
- Definition Distribution Reinvestment and Share Purchase Plan. + References No definition available. + Details
Name: | eqr_DistributionReinvestmentAndSharePurchasePlanAbstract
Namespace Prefix: | eqr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of shares available for issuance under the company's dividend reinvestment plan at the balance sheet date. + References No definition available. + Details
Name: | eqr_NumberOfSharesAvailableForIssuance
Namespace Prefix: | eqr_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the number of shares authorized for issuance under the company's dividend reinvestment plan at the registration date. + References No definition available. + Details
Name: | eqr_StockRegisteredDuringPeriodSharesDividendReinvestmentPlan
Namespace Prefix: | eqr_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant