XML 71 R53.htm IDEA: XBRL DOCUMENT
v3.22.4

Summary of Significant Accounting Policies Tax (Parenthetical) (Details) - $ / shares | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Disclosure Summary Of Significant Accounting Policies Tax Parenthetical Details [Abstract] |  |  |
Dividend payable common share/unit, per share | $ 0.625 | $ 0.6025 | $ 0.6025

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

X
- Definition The per share amount of a dividend declared, but not paid, as of the financial reporting date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4304-108586 + Details
Name: | us-gaap_DividendsPayableAmountPerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant