XML 78 R63.htm IDEA: XBRL DOCUMENT
v3.23.1

Leases - Summary of Lease Income Types Relating to Lease Payments Along With the Total Other Rental Income (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Operating Leased Assets [Line Items] |  |
Total lease revenue | $ 676,399 | $ 627,970
Rental income | 705,088 | 653,348
Residential Leases [Member] |  |
Operating Leased Assets [Line Items] |  |
Total lease revenue | 659,428 | 611,860
Non-residential Leases [Member] |  |
Operating Leased Assets [Line Items] |  |
Total lease revenue | 16,971 | 16,110
Residential and Non-Residential Rent [Member] |  |
Operating Leased Assets [Line Items] |  |
Total lease revenue | 650,738 | 603,654
Residential and Non-Residential Rent [Member] | Residential Leases [Member] |  |
Operating Leased Assets [Line Items] |  |
Total lease revenue | 634,752 | 587,780
Residential and Non-Residential Rent [Member] | Non-residential Leases [Member] |  |
Operating Leased Assets [Line Items] |  |
Total lease revenue | 15,986 | 15,874
Utility Recoveries (RUBS Income) [Member] |  |
Operating Leased Assets [Line Items] |  |
Total lease revenue | 21,590 | 19,779
Utility Recoveries (RUBS Income) [Member] | Residential Leases [Member] |  |
Operating Leased Assets [Line Items] |  |
Total lease revenue | 21,383 | 19,598
Utility Recoveries (RUBS Income) [Member] | Non-residential Leases [Member] |  |
Operating Leased Assets [Line Items] |  |
Total lease revenue | 207 | 181
Parking Rent [Member] |  |
Operating Leased Assets [Line Items] |  |
Total lease revenue | 10,991 | 10,881
Parking Rent [Member] | Residential Leases [Member] |  |
Operating Leased Assets [Line Items] |  |
Total lease revenue | 10,882 | 10,783
Parking Rent [Member] | Non-residential Leases [Member] |  |
Operating Leased Assets [Line Items] |  |
Total lease revenue | 109 | 98
Other Lease Revenue [Member] |  |
Operating Leased Assets [Line Items] |  |
Total lease revenue | (6,920) | (6,344)
Other Lease Revenue [Member] | Residential Leases [Member] |  |
Operating Leased Assets [Line Items] |  |
Total lease revenue | (7,589) | (6,301)
Other Lease Revenue [Member] | Non-residential Leases [Member] |  |
Operating Leased Assets [Line Items] |  |
Total lease revenue | 669 | (43)
Parking Revenue |  |
Operating Leased Assets [Line Items] |  |
Rental income | 10,203 | 8,808
Other Revenue |  |
Operating Leased Assets [Line Items] |  |
Rental income | 18,486 | 16,570
Other Rental Income [Member] |  |
Operating Leased Assets [Line Items] |  |
Rental income | $ 28,689 | $ 25,378

X
- Definition Operating lease lease income (loss). + References No definition available. + Details
Name: | eqr_OperatingLeaseLeaseIncomeLoss
Namespace Prefix: | eqr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of operating lease income from lease payments and variable lease payments paid and payable to lessor. Includes, but is not limited to, variable lease payments not included in measurement of lease receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=124258985&loc=SL77919372-209981 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 45 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=123420820&loc=SL77919311-209978 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 6A -URI https://asc.fasb.org/extlink&oid=126900988&loc=SL77927221-108306 + Details
Name: | us-gaap_OperatingLeaseLeaseIncome
Namespace Prefix: | us-gaap_
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_OperatingLeasedAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=eqr_ResidentialLeasesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=eqr_NonResidentialLeasesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=eqr_ResidentialAndNonResidentialRentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=eqr_UtilityRecoveriesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_ParkingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=eqr_OtherLeaseRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=eqr_ParkingRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=eqr_OtherRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=eqr_OtherRentalIncomeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |