XML 114 R96.htm IDEA: XBRL DOCUMENT
v3.22.4

Debt - Other - Summary of Debt Extinguishment Costs Recorded as Additional Interest Expense (Details) - Other [Member] - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Extinguishment Of Debt [Line Items] |  |  |
Prepayment premiums/penalties |  |  | $ 26,150
Write-offs of unamortized deferred financing costs | $ 717 | $ 744 | 634
Write-offs of unamortized (premiums)/discounts/OCI | 3,947 |  | 12,508
Total | $ 4,664 | $ 744 | $ 39,292

X
- Definition Prepayment premiums penalties. + References No definition available. + Details
Name: | eqr_PrepaymentPremiumsPenalties
Namespace Prefix: | eqr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of write off of unamortized discount premium net. + References No definition available. + Details
Name: | eqr_WriteoffOfUnamortizedDiscountPremiumNet
Namespace Prefix: | eqr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Gross amount of debt extinguished. + References No definition available. + Details
Name: | us-gaap_ExtinguishmentOfDebtAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ExtinguishmentOfDebtLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 + Details
Name: | us-gaap_WriteOffOfDeferredDebtIssuanceCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=eqr_OtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |