XML 59 R47.htm IDEA: XBRL DOCUMENT v3.24.3

Equity, Capital and Other Interests - Changes in Operating Partnership's Issued and Outstanding General Partner Units and Limited Partner Units (Details) - shares	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
General and Limited Partner Units
Exercise of share options	284,021	234,395
Employee Share Purchase Plan (ESPP)	54,061	48,835
Restricted share grants, net	186,672	148,304
Restricted unit grants, net	172,667	166,344
Common Shares And Units Outstanding	390,917,692	391,457,323
Limited Partner Units
Total Units Outstanding	11,581,306	12,429,737
Restricted unit grants, net	172,667	166,344
Conversion of Limited Partner OP Units to EQR Common Shares	(191,019)	(862,596)
Total Units Outstanding	11,562,954	11,733,485
Units Ownership Interest in Operating Partnership	3.00%	3.00%
ERPOP [Member]
General and Limited Partner Units
Common Shares And Units Outstanding	390,872,723	390,859,445
Exercise of share options	284,021	234,395
Employee Share Purchase Plan (ESPP)	54,061	48,835
Restricted share grants, net	186,672	148,304
Restricted unit grants, net	172,667	166,344
OP Units repurchased and retired	(652,452)
Common Shares And Units Outstanding	390,917,692	391,457,323
Limited Partner Units
Total Units Outstanding	11,581,306	12,429,737
Restricted unit grants, net	172,667	166,344
Conversion of Limited Partner OP Units to EQR Common Shares	(191,019)	(862,596)
Total Units Outstanding	11,562,954	11,733,485
Units Ownership Interest in Operating Partnership	3.00%	3.00%

X

- Definition

Number of all classes of common stock held by shareholders, which is net of related treasury stock, and number of all Operating Partnership Units held by various individuals and entities that contributed their properties to the Operating Partnership.

+ References

No definition available.

+ Details

Name:	eqr_CommonSharesAndUnitsOutstanding
Namespace Prefix:	eqr_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of units issued during the period as a result of a long-term incentive plan.

+ References

No definition available.

+ Details

Name:	eqr_IssuanceOfLtips
Namespace Prefix:	eqr_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Partners capital units shares repurchased and retired.

+ References

No definition available.

+ Details

Name:	eqr_PartnersCapitalUnitsSharesRepurchasedAndRetired
Namespace Prefix:	eqr_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The number of restricted shares granted during the reporting period, net of cancellations.

+ References

No definition available.

+ Details

Name:	eqr_RestrictedShareGrantsNet
Namespace Prefix:	eqr_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

OP Units converted into shares of stock during the period. An example of a convertible unit is an umbrella partnership real estate investment trust unit (UPREIT unit). Subject to certain exceptions, this unit can be exchanged for Common Shares on a one-for-one basis.

+ References

No definition available.

+ Details

Name:	eqr_SharesIssuedDuringPeriodSharesConversionOfUnitsToCommonShares
Namespace Prefix:	eqr_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Units outstanding.

+ References

No definition available.

+ Details

Name:	eqr_UnitsOutstanding
Namespace Prefix:	eqr_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Represents the noncontrolling interests (comprised of Units and LTIP Units) ownership interest in the Operating Partnership.

+ References

No definition available.

+ Details

Name:	eqr_UnitsOwnershipInterestInOperatingPartnership
Namespace Prefix:	eqr_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_GeneralAndLimitedPartnersCapitalAccountAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_LimitedPartnersCapitalAccountAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of shares issued during the period as a result of an employee stock purchase plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-SubTopic 10
-Topic 505
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-2

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of share options (or share units) exercised during the current period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-SubTopic 10
-Topic 505
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-2

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(02)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	dei_LegalEntityAxis=eqr_ERPOPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: