XML 136 R119.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Share Incentive Plans - Information Regarding Options Outstanding and Exercisable (Parenthetical) (Details) | Dec. 31, 2024 $ / shares
--- | ---
Share-Based Payment Arrangement, Noncash Expense [Abstract] |
Market value of common shares | $ 71.76

X
- Definition Represents the closing share price of the company's stock on the balance sheet date. + References No definition available. + Details
Name: | eqr_MarketValueOfCommonShares
Namespace Prefix: | eqr_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration