XML 107 R88.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Debt - Mortgage Notes Payable - Summary of Mortgage Notes Payable Activity (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Debt Instrument [Line Items] |  |  |
Mortgage notes payable, net | $ 2,293,890 | $ 1,941,610 |
Proceeds | 58,428 | 519,204 | $ 295,771
Lump sum payoffs | (156,815) | (160,522) | (743,021)
Scheduled principal repayments | (7,465) | (7,759) |
Amortization of premiums/ discounts | 2,764 | 2,234 | 8,618
Amortization of deferred financing costs, net | 399 | (877) |
Mortgage notes payable, net | 2,191,201 | 2,293,890 | 1,941,610
Fixed Rate Debt [Member] | Secured Conventional [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Mortgage notes payable, net | 1,901,091 | 1,574,699 |
Proceeds | 28,500 | 495,000 |
Lump sum payoffs | (28,200) | (160,522) |
Scheduled principal repayments | (7,465) | (7,759) |
Amortization of premiums/ discounts | 1,522 | 988 |
Amortization of deferred financing costs, net | 1,024 | (1,315) |
Mortgage notes payable, net | 1,896,472 | 1,901,091 | 1,574,699
Floating Rate Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Mortgage notes payable, net | 392,799 | 366,911 |
Proceeds | 29,928 | 24,204 |
Lump sum payoffs | (128,615) |  |
Amortization of premiums/ discounts | 1,242 | 1,246 |
Amortization of deferred financing costs, net | (625) | 438 |
Mortgage notes payable, net | 294,729 | 392,799 | 366,911
Floating Rate Debt [Member] | Secured Conventional [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Mortgage notes payable, net | 31,494 | 7,050 |
Proceeds | 29,928 | 24,204 |
Amortization of deferred financing costs, net | (1,532) | 240 |
Mortgage notes payable, net | 59,890 | 31,494 | 7,050
Floating Rate Debt [Member] | Secured Tax Exempt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Mortgage notes payable, net | 361,305 | 359,861 |
Lump sum payoffs | (128,615) |  |
Amortization of premiums/ discounts | 1,242 | 1,246 |
Amortization of deferred financing costs, net | 907 | 198 |
Mortgage notes payable, net | $ 234,839 | $ 361,305 | $ 359,861

X
- Definition Amount of amortization of other deferred financing costs net associated with mortgage notes payable, net. + References No definition available. + Details
Name: | eqr_AmortizationOfDeferredFinancingCostsNetMortgageNotesPayableNet
Namespace Prefix: | eqr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The component of interest expense representing the noncash expenses charged against earnings in the period to amortize debt discount and premium associated with the mortgage notes payable during the period. + References No definition available. + Details
Name: | eqr_AmortizationOfDiscountsAndPremiumsOnDebtMortgageNotesPayable
Namespace Prefix: | eqr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash outflow from the lump sum payment of collateralized debt obligations (backed by pledge, mortgage or other lien in the entity's assets). + References No definition available. + Details
Name: | eqr_MortgageNotesPayableLumpSumPayOffs
Namespace Prefix: | eqr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash inflow from borrowings supported by a written promise to pay an obligation that is collateralized (backed by pledge, mortgage or other lien in the entity's assets). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromSecuredNotesPayable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585 + Details
Name: | us-gaap_RepaymentsOfLongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_SecuredDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=eqr_FixedRateDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=eqr_FloatingRateDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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