10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2021

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from        to

Commission File Number: 1-12252 (Equity Residential)

Commission File Number: 0-24920 (ERP Operating Limited Partnership)

EQUITY RESIDENTIAL

ERP OPERATING LIMITED PARTNERSHIP

(Exact name of registrant as specified in its charter)

Maryland (Equity Residential)	13-3675988 (Equity Residential)
Illinois (ERP Operating Limited Partnership)	36-3894853 (ERP Operating Limited Partnership)
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
Two North Riverside Plaza, Chicago, Illinois 60606	(312) 474-1300
(Address of principal executive offices) (Zip Code)	(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Shares of Beneficial Interest, $0.01 Par Value (Equity Residential)	EQR	New York Stock Exchange
7.57% Notes due August 15, 2026 (ERP Operating Limited Partnership)	N/A	New York Stock Exchange

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

Equity Residential  Yes ☒  No ☐ ERP Operating Limited Partnership  Yes ☒  No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).

Equity Residential  Yes ☒  No ☐ ERP Operating Limited Partnership  Yes ☒  No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company.  See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Equity Residential:

Large accelerated filer	☒	Accelerated filer	☐
Non-accelerated filer	☐	Smaller reporting company	☐
Emerging growth company	☐

l

ERP Operating Limited Partnership:

Large accelerated filer	☐	Accelerated filer	☐
Non-accelerated filer	☒	Smaller reporting company	☐
Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

Equity Residential  ☐ ERP Operating Limited Partnership  ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Equity Residential  Yes ☐  No ☒ ERP Operating Limited Partnership  Yes ☐  No ☒

The number of EQR Common Shares of Beneficial Interest, $0.01 par value, outstanding on April 26, 2021 was 374,005,379.

EXPLANATORY NOTE

This report combines the reports on Form 10-Q for the quarterly period ended March 31, 2021 of Equity Residential and ERP Operating Limited Partnership.  Unless stated otherwise or the context otherwise requires, references to “EQR” mean Equity Residential, a Maryland real estate investment trust (“REIT”), and references to “ERPOP” mean ERP Operating Limited Partnership, an Illinois limited partnership.  References to the “Company,” “we,” “us” or “our” mean collectively EQR, ERPOP and those entities/subsidiaries owned or controlled by EQR and/or ERPOP.  References to the “Operating Partnership” mean collectively ERPOP and those entities/subsidiaries owned or controlled by ERPOP.  The following chart illustrates the Company’s and the Operating Partnership’s corporate structure:

EQR is the general partner of, and as of March 31, 2021 owned an approximate 96.4% ownership interest in, ERPOP.  The remaining 3.6% interest is owned by limited partners.  As the sole general partner of ERPOP, EQR has exclusive control of ERPOP’s day-to-day management.  Management operates the Company and the Operating Partnership as one business.  The management of EQR consists of the same members as the management of ERPOP.

The Company is structured as an umbrella partnership REIT (“UPREIT”) and EQR contributes all net proceeds from its various equity offerings to ERPOP.  In return for those contributions, EQR receives a number of OP Units (see definition below) in ERPOP equal to the number of Common Shares it has issued in the equity offering.  The Company may acquire properties in transactions that include the issuance of OP Units as consideration for the acquired properties.  Such transactions may, in certain circumstances, enable the sellers to defer in whole or in part, the recognition of taxable income or gain that might otherwise result from the sales.  This is one of the reasons why the Company is structured in the manner shown above.  Based on the terms of ERPOP’s partnership agreement, OP Units can be exchanged with Common Shares on a one-for-one basis because the Company maintains a one-for-one relationship between the OP Units of ERPOP issued to EQR and the outstanding Common Shares.

The Company believes that combining the reports on Form 10-Q of EQR and ERPOP into this single report provides the following benefits:

• enhances investors’ understanding of the Company and the Operating Partnership by enabling investors to view the business as a whole in the same manner as management views and operates the business;

• eliminates duplicative disclosure and provides a more streamlined and readable presentation since a substantial portion of the disclosure applies to both the Company and the Operating Partnership; and

• creates time and cost efficiencies through the preparation of one combined report instead of two separate reports.

The Company believes it is important to understand the few differences between EQR and ERPOP in the context of how EQR and ERPOP operate as a consolidated company.  All of the Company’s property ownership, development and related business operations are conducted through the Operating Partnership and EQR has no material assets or liabilities other than its investment in ERPOP.  EQR’s primary function is acting as the general partner of ERPOP.  EQR also issues equity from time to time, the net proceeds of which it is obligated to contribute to ERPOP.  EQR does not have any indebtedness as all debt is incurred by the Operating Partnership.  The Operating Partnership holds substantially all of the assets of the Company, including the Company’s ownership interests in its joint ventures.  The Operating Partnership conducts the operations of the business and is structured as a partnership with no publicly traded equity.  Except for the net proceeds from equity offerings by EQR (which are contributed to the capital of ERPOP in exchange for additional partnership interests in ERPOP (“OP Units”) (on a one-for-one Common Share per OP Unit basis) or additional preference units in ERPOP (on a one-for-one preferred share per preference unit basis)), the Operating Partnership generates all remaining capital required by the Company’s business.  These sources include the Operating Partnership’s working capital, net cash provided by operating activities, borrowings under its revolving credit facility and/or commercial paper program, the issuance of secured and unsecured debt and partnership interests, and proceeds received from disposition of certain properties and joint venture interests.

Shareholders’ equity, partners’ capital and noncontrolling interests are the main areas of difference between the consolidated financial statements of the Company and those of the Operating Partnership.  The limited partners of the Operating Partnership are accounted for as partners’ capital in the Operating Partnership’s financial statements and as noncontrolling interests in the Company’s financial statements.  The noncontrolling interests in the Operating Partnership’s financial statements include the interests of unaffiliated partners in various consolidated partnerships.  The noncontrolling interests in the Company’s financial statements include the same noncontrolling interests at the Operating Partnership level and limited partner OP Unit holders of the Operating Partnership.  The differences between shareholders’ equity and partners’ capital result from differences in the equity issued at the Company and Operating Partnership levels.

To help investors understand the differences between the Company and the Operating Partnership, this report provides separate consolidated financial statements for the Company and the Operating Partnership; a single set of consolidated notes to such financial statements that includes separate discussions of each entity’s debt, noncontrolling interests and shareholders’ equity or partners’ capital, as applicable; and a combined Management’s Discussion and Analysis of Financial Condition and Results of Operations section that includes discrete information related to each entity.

This report also includes separate Part I, Item 4, Controls and Procedures, sections and separate Exhibits 31 and 32 certifications for each of the Company and the Operating Partnership in order to establish that the requisite certifications have been made and that the Company and the Operating Partnership are compliant with Rule 13a-15 or Rule 15d-15 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and 18 U.S.C. §1350.

In order to highlight the differences between the Company and the Operating Partnership, the separate sections in this report for the Company and the Operating Partnership specifically refer to the Company and the Operating Partnership.  In the sections that combine disclosure of the Company and the Operating Partnership, this report refers to actions or holdings as being actions or holdings of the Company.  Although the Operating Partnership is generally the entity that directly or indirectly enters into contracts and joint ventures and holds assets and debt, reference to the Company is appropriate because the Company is one business and the Company operates that business through the Operating Partnership.

As general partner with control of ERPOP, EQR consolidates ERPOP for financial reporting purposes, and EQR essentially has no assets or liabilities other than its investment in ERPOP.  Therefore, the assets and liabilities of the Company and the Operating Partnership are the same on their respective financial statements.  The separate discussions of the Company and the Operating Partnership in this report should be read in conjunction with each other to understand the results of the Company on a consolidated basis and how management operates the Company.

TABLE OF CONTENTS

	PAGE
PART I.
Item 1. Financial Statements of Equity Residential:
Consolidated Balance Sheets as of March 31, 2021 and December 31, 2020	2
Consolidated Statements of Operations and Comprehensive Income for the quarters ended March 31, 2021 and 2020	3
Consolidated Statements of Cash Flows for the quarters ended March 31, 2021 and 2020	5
Consolidated Statements of Changes in Equity for the quarters ended March 31, 2021 and 2020	8
Financial Statements of ERP Operating Limited Partnership:
Consolidated Balance Sheets as of March 31, 2021 and December 31, 2020	10
Consolidated Statements of Operations and Comprehensive Income for the quarters ended March 31, 2021 and 2020	11
Consolidated Statements of Cash Flows for the quarters ended March 31, 2021 and 2020	13
Consolidated Statements of Changes in Capital for the quarters ended March 31, 2021 and 2020	16
Notes to Consolidated Financial Statements of Equity Residential and ERP Operating Limited Partnership	18
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	34
Item 3. Quantitative and Qualitative Disclosures about Market Risk	51
Item 4. Controls and Procedures	51
PART II.
Item 1. Legal Proceedings	52
Item 1A. Risk Factors	52
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	52
Item 3. Defaults Upon Senior Securities	52
Item 4. Mine Safety Disclosures	52
Item 5. Other Information	52
Item 6. Exhibits	52

EQUITY RESIDENTIAL

CONSOLIDATED BALANCE SHEETS

(Amounts in thousands except for share amounts)

(Unaudited)

	March 31,			December 31,
	2021			2020
ASSETS
Land	$	5,785,367		$	5,785,367
Depreciable property		20,952,067			20,920,654
Projects under development		476,010			411,134
Land held for development		88,360			86,170
Investment in real estate		27,301,804			27,203,325
Accumulated depreciation		(8,059,619	)		(7,859,657	)
Investment in real estate, net		19,242,185			19,343,668
Investments in unconsolidated entities		53,274			52,782
Cash and cash equivalents		35,453			42,591
Restricted deposits		62,383			57,137
Right-of-use assets		484,999			499,287
Other assets		290,721			291,426
Total assets	$	20,169,015		$	20,286,891
LIABILITIES AND EQUITY
Liabilities:
Mortgage notes payable, net	$	2,270,700		$	2,293,890
Notes, net		5,337,103			5,335,536
Line of credit and commercial paper		429,753			414,830
Accounts payable and accrued expenses		168,028			107,366
Accrued interest payable		55,489			65,896
Lease liabilities		316,838			329,130
Other liabilities		335,664			345,064
Security deposits		60,939			60,480
Distributions payable		232,737			232,262
Total liabilities		9,207,251			9,184,454
Commitments and contingencies
Redeemable Noncontrolling Interests – Operating Partnership		409,523			338,951
Equity:
Shareholders' equity:
Preferred Shares of beneficial interest, $0.01 par value; 100,000,000 shares    authorized; 745,600 shares issued and outstanding as of March 31, 2021 and    December 31, 2020		37,280			37,280
Common Shares of beneficial interest, $0.01 par value; 1,000,000,000 shares    authorized; 372,917,413 shares issued and outstanding as of March 31, 2021 and    372,302,000 shares issued and outstanding as of December 31, 2020		3,729			3,723
Paid in capital		9,083,346			9,128,599
Retained earnings		1,231,808			1,399,715
Accumulated other comprehensive income (loss)		(41,363	)		(43,666	)
Total shareholders’ equity		10,314,800			10,525,651
Noncontrolling Interests:
Operating Partnership		234,969			233,162
Partially Owned Properties		2,472			4,673
Total Noncontrolling Interests		237,441			237,835
Total equity		10,552,241			10,763,486
Total liabilities and equity	$	20,169,015		$	20,286,891

See accompanying notes

2

EQUITY RESIDENTIAL

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME

(Amounts in thousands except per share data)

(Unaudited)

	Quarter Ended March 31,
	2021			2020
REVENUES
Rental income	$	597,602		$	682,305
EXPENSES
Property and maintenance		117,054			115,816
Real estate taxes and insurance		103,470			97,732
Property management		26,130			27,709
General and administrative		15,383			14,518
Depreciation		199,962			212,422
Total expenses		461,999			468,197
Net gain (loss) on sales of real estate properties		(43	)		207,977
Operating income		135,560			422,085
Interest and other income		216			1,960
Other expenses		(4,110	)		(2,533	)
Interest:
Expense incurred, net		(67,358	)		(85,590	)
Amortization of deferred financing costs		(2,185	)		(2,041	)
Income before income and other taxes, income (loss) from investments in    unconsolidated entities and net gain (loss) on sales of land parcels		62,123			333,881
Income and other tax (expense) benefit		(153	)		(53	)
Income (loss) from investments in unconsolidated entities		(1,611	)		(1,157	)
Net gain (loss) on sales of land parcels		5			—
Net income		60,364			332,671
Net (income) loss attributable to Noncontrolling Interests:
Operating Partnership		(2,143	)		(11,535	)
Partially Owned Properties		(682	)		(12,530	)
Net income attributable to controlling interests		57,539			308,606
Preferred distributions		(773	)		(773	)
Net income available to Common Shares	$	56,766		$	307,833
Earnings per share – basic:
Net income available to Common Shares	$	0.15		$	0.83
Weighted average Common Shares outstanding		372,280			371,582
Earnings per share – diluted:
Net income available to Common Shares	$	0.15		$	0.83
Weighted average Common Shares outstanding		386,916			386,949

See accompanying notes

3

EQUITY RESIDENTIAL

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (Continued)

(Amounts in thousands except per share data)

(Unaudited)

	Quarter Ended March 31,
	2021			2020
Comprehensive income:
Net income	$	60,364		$	332,671
Other comprehensive income (loss):
Other comprehensive income (loss) – derivative instruments:
Unrealized holding gains (losses) arising during the period		—			(967	)
Losses reclassified into earnings from other comprehensive income		2,303			5,634
Other comprehensive income (loss)		2,303			4,667
Comprehensive income		62,667			337,338
Comprehensive (income) attributable to Noncontrolling Interests		(2,909	)		(24,234	)
Comprehensive income attributable to controlling interests	$	59,758		$	313,104

See accompanying notes

4

EQUITY RESIDENTIAL

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Amounts in thousands)

(Unaudited)

	Quarter Ended March 31,
	2021			2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$	60,364		$	332,671
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation		199,962			212,422
Amortization of deferred financing costs		2,185			2,041
Amortization of above/below market lease intangibles		(18	)		(18	)
Amortization of discounts and premiums on debt		1,294			1,276
Amortization of deferred settlements on derivative instruments		2,301			5,631
Amortization of right-of-use assets		2,980			3,007
Write-off of pursuit costs		1,331			1,627
(Income) loss from investments in unconsolidated entities		1,611			1,157
Distributions from unconsolidated entities – return on capital		—			100
Net (gain) loss on sales of real estate properties		43			(207,977	)
Net (gain) loss on sales of land parcels		(5	)		—
Realized/unrealized (gain) loss on derivative instruments		—			25
Compensation paid with Company Common Shares		8,678			7,844
Other operating activities, net		133			1,805
Changes in assets and liabilities:
(Increase) decrease in other assets		20,746			(18,386	)
Increase (decrease) in accounts payable and accrued expenses		59,116			62,573
Increase (decrease) in accrued interest payable		(10,407	)		(927	)
Increase (decrease) in lease liabilities		(868	)		(621	)
Increase (decrease) in other liabilities		(3,852	)		(20,811	)
Increase (decrease) in security deposits		459			(988	)
Net cash provided by operating activities		346,053			382,451
CASH FLOWS FROM INVESTING ACTIVITIES:
Investment in real estate – development/other		(64,599	)		(52,204	)
Capital expenditures to real estate		(28,679	)		(38,342	)
Non-real estate capital additions		(589	)		(4,516	)
Interest capitalized for real estate under development		(3,769	)		(1,834	)
Proceeds from disposition of real estate, net		—			368,364
Investments in unconsolidated entities		(2,378	)		(5,458	)
Distributions from unconsolidated entities – return of capital		4			—
Other investing activities, net		(26,335	)		(1	)
Net cash provided by (used for) investing activities		(126,345	)		266,009

See accompanying notes

5

EQUITY RESIDENTIAL

CONSOLIDATED STATEMENTS OF CASH FLOWS (Continued)

(Amounts in thousands)

(Unaudited)

	Quarter Ended March 31,
	2021			2020
CASH FLOWS FROM FINANCING ACTIVITIES:
Debt financing costs	$	(318	)	$	(181	)
Mortgage notes payable, net:
Proceeds		37,492			78
Lump sum payoffs		(59,880	)		—
Scheduled principal repayments		(1,871	)		(1,941	)
Line of credit and commercial paper:
Line of credit proceeds		—			720,000
Line of credit repayments		—			(740,000	)
Commercial paper proceeds		1,184,923			1,905,818
Commercial paper repayments		(1,170,000	)		(2,291,000	)
Proceeds from (payments on) settlement of derivative instruments		—			(25	)
Finance ground lease principal payments		(116	)		—
Proceeds from Employee Share Purchase Plan (ESPP)		1,731			869
Proceeds from exercise of options		22,882			11,151
Contributions – Noncontrolling Interests – Partially Owned Properties		—			341
Contributions – Noncontrolling Interests – Operating Partnership		—			12
Distributions:
Common Shares		(224,308	)		(211,239	)
Preferred Shares		(773	)		(773	)
Noncontrolling Interests – Operating Partnership		(8,479	)		(8,484	)
Noncontrolling Interests – Partially Owned Properties		(2,883	)		(9,315	)
Net cash provided by (used for) financing activities		(221,600	)		(624,689	)
Net increase (decrease) in cash and cash equivalents and restricted deposits		(1,892	)		23,771
Cash and cash equivalents and restricted deposits, beginning of period		99,728			116,999
Cash and cash equivalents and restricted deposits, end of period	$	97,836		$	140,770
Cash and cash equivalents and restricted deposits, end of period
Cash and cash equivalents	$	35,453		$	82,335
Restricted deposits		62,383			58,435
Total cash and cash equivalents and restricted deposits, end of period	$	97,836		$	140,770

See accompanying notes

6

EQUITY RESIDENTIAL

CONSOLIDATED STATEMENTS OF CASH FLOWS (Continued)

(Amounts in thousands)

(Unaudited)

	Quarter Ended March 31,
	2021			2020
SUPPLEMENTAL INFORMATION:
Cash paid for interest, net of amounts capitalized	$	74,058		$	75,561
Net cash paid (received) for income and other taxes	$	752		$	266
Amortization of deferred financing costs:
Investment in real estate, net	$	(60	)	$	(60	)
Other assets	$	585		$	584
Mortgage notes payable, net	$	703		$	403
Notes, net	$	957		$	1,114
Amortization of discounts and premiums on debt:
Mortgage notes payable, net	$	684		$	595
Notes, net	$	610		$	681
Amortization of deferred settlements on derivative instruments:
Other liabilities	$	(2	)	$	(3	)
Accumulated other comprehensive income	$	2,303		$	5,634
Write-off of pursuit costs:
Investment in real estate, net	$	1,209		$	1,586
Other assets	$	114		$	33
Accounts payable and accrued expenses	$	8		$	8
(Income) loss from investments in unconsolidated entities:
Investments in unconsolidated entities	$	1,282		$	830
Other liabilities	$	329		$	327
Realized/unrealized (gain) loss on derivative instruments:
Other liabilities	$	—		$	992
Accumulated other comprehensive income	$	—		$	(967	)
Investments in unconsolidated entities:
Investments in unconsolidated entities	$	(1,778	)	$	(4,558	)
Other liabilities	$	(600	)	$	(900	)
Debt financing costs:
Other assets	$	—		$	(181	)
Mortgage notes payable, net	$	(318	)	$	—
Right-of-use assets and lease liabilities initial measurement and reclassifications:
Right-of-use assets	$	11,308		$	—
Lease liabilities	$	(11,308	)	$	—

See accompanying notes

7

EQUITY RESIDENTIAL

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY

(Amounts in thousands except per share data)

(Unaudited)

	Quarter Ended March 31,
	2021			2020
SHAREHOLDERS’ EQUITY
PREFERRED SHARES
Balance, beginning of period	$	37,280		$	37,280
Balance, end of period	$	37,280		$	37,280
COMMON SHARES, $0.01 PAR VALUE
Balance, beginning of period	$	3,723		$	3,717
Exercise of share options		5			2
Share-based employee compensation expense:
Restricted shares		1			2
Balance, end of period	$	3,729		$	3,721
PAID IN CAPITAL
Balance, beginning of period	$	9,128,599		$	8,965,577
Common Share Issuance:
Conversion of OP Units into Common Shares		—			1,844
Exercise of share options		22,877			11,149
Employee Share Purchase Plan (ESPP)		1,731			869
Share-based employee compensation expense:
Restricted shares		2,273			4,021
Share options		988			670
ESPP discount		444			153
Supplemental Executive Retirement Plan (SERP)		(1,229	)		149
Change in market value of Redeemable Noncontrolling Interests – Operating Partnership		(72,956	)		111,449
Adjustment for Noncontrolling Interests ownership in Operating Partnership		619			(3,440	)
Balance, end of period	$	9,083,346		$	9,092,441
RETAINED EARNINGS
Balance, beginning of period	$	1,399,715		$	1,386,495
Net income attributable to controlling interests		57,539			308,606
Common Share distributions		(224,673	)		(224,507	)
Preferred Share distributions		(773	)		(773	)
Balance, end of period	$	1,231,808		$	1,469,821
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
Balance, beginning of period	$	(43,666	)	$	(77,563	)
Accumulated other comprehensive income (loss) – derivative instruments:
Unrealized holding gains (losses) arising during the period		—			(967	)
Losses reclassified into earnings from other comprehensive income		2,303			5,634
Balance, end of period	$	(41,363	)	$	(72,896	)
DISTRIBUTIONS
Distributions declared per Common Share outstanding	$	0.6025		$	0.6025

See accompanying notes

8

EQUITY RESIDENTIAL

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Continued)

(Amounts in thousands except per share data)

(Unaudited)

	Quarter Ended March 31,
	2021			2020
NONCONTROLLING INTERESTS
OPERATING PARTNERSHIP
Balance, beginning of period	$	233,162		$	227,837
Issuance of restricted units to Noncontrolling Interests		—			12
Conversion of OP Units held by Noncontrolling Interests into OP Units held by    General Partner		—			(1,844	)
Equity compensation associated with Noncontrolling Interests		6,488			5,067
Net income attributable to Noncontrolling Interests		2,143			11,535
Distributions to Noncontrolling Interests		(8,589	)		(9,076	)
Change in carrying value of Redeemable Noncontrolling Interests – Operating Partnership		2,384			(1,391	)
Adjustment for Noncontrolling Interests ownership in Operating Partnership		(619	)		3,440
Balance, end of period	$	234,969		$	235,580
PARTIALLY OWNED PROPERTIES
Balance, beginning of period	$	4,673		$	1,183
Net income attributable to Noncontrolling Interests		682			12,530
Contributions by Noncontrolling Interests		—			341
Distributions to Noncontrolling Interests		(2,883	)		(9,315	)
Balance, end of period	$	2,472		$	4,739

See accompanying notes

9

ERP OPERATING LIMITED PARTNERSHIP

CONSOLIDATED BALANCE SHEETS

(Amounts in thousands)

(Unaudited)

	March 31,			December 31,
	2021			2020
ASSETS
Land	$	5,785,367		$	5,785,367
Depreciable property		20,952,067			20,920,654
Projects under development		476,010			411,134
Land held for development		88,360			86,170
Investment in real estate		27,301,804			27,203,325
Accumulated depreciation		(8,059,619	)		(7,859,657	)
Investment in real estate, net		19,242,185			19,343,668
Investments in unconsolidated entities		53,274			52,782
Cash and cash equivalents		35,453			42,591
Restricted deposits		62,383			57,137
Right-of-use assets		484,999			499,287
Other assets		290,721			291,426
Total assets	$	20,169,015		$	20,286,891
LIABILITIES AND CAPITAL
Liabilities:
Mortgage notes payable, net	$	2,270,700		$	2,293,890
Notes, net		5,337,103			5,335,536
Line of credit and commercial paper		429,753			414,830
Accounts payable and accrued expenses		168,028			107,366
Accrued interest payable		55,489			65,896
Lease liabilities		316,838			329,130
Other liabilities		335,664			345,064
Security deposits		60,939			60,480
Distributions payable		232,737			232,262
Total liabilities		9,207,251			9,184,454
Commitments and contingencies
Redeemable Limited Partners		409,523			338,951
Capital:
Partners’ Capital:
Preference Units		37,280			37,280
General Partner		10,318,883			10,532,037
Limited Partners		234,969			233,162
Accumulated other comprehensive income (loss)		(41,363	)		(43,666	)
Total partners’ capital		10,549,769			10,758,813
Noncontrolling Interests – Partially Owned Properties		2,472			4,673
Total capital		10,552,241			10,763,486
Total liabilities and capital	$	20,169,015		$	20,286,891

See accompanying notes

10

ERP OPERATING LIMITED PARTNERSHIP

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME

(Amounts in thousands except per Unit data)

(Unaudited)

	Quarter Ended March 31,
	2021			2020
REVENUES
Rental income	$	597,602		$	682,305
EXPENSES
Property and maintenance		117,054			115,816
Real estate taxes and insurance		103,470			97,732
Property management		26,130			27,709
General and administrative		15,383			14,518
Depreciation		199,962			212,422
Total expenses		461,999			468,197
Net gain (loss) on sales of real estate properties		(43	)		207,977
Operating income		135,560			422,085
Interest and other income		216			1,960
Other expenses		(4,110	)		(2,533	)
Interest:
Expense incurred, net		(67,358	)		(85,590	)
Amortization of deferred financing costs		(2,185	)		(2,041	)
Income before income and other taxes, income (loss) from investments in    unconsolidated entities and net gain (loss) on sales of land parcels		62,123			333,881
Income and other tax (expense) benefit		(153	)		(53	)
Income (loss) from investments in unconsolidated entities		(1,611	)		(1,157	)
Net gain (loss) on sales of land parcels		5			—
Net income		60,364			332,671
Net (income) loss attributable to Noncontrolling Interests – Partially Owned    Properties		(682	)		(12,530	)
Net income attributable to controlling interests	$	59,682		$	320,141
ALLOCATION OF NET INCOME:
Preference Units	$	773		$	773
General Partner	$	56,766		$	307,833
Limited Partners		2,143			11,535
Net income available to Units	$	58,909		$	319,368
Earnings per Unit – basic:
Net income available to Units	$	0.15		$	0.83
Weighted average Units outstanding		385,330			384,586
Earnings per Unit – diluted:
Net income available to Units	$	0.15		$	0.83
Weighted average Units outstanding		386,916			386,949

See accompanying notes

11

ERP OPERATING LIMITED PARTNERSHIP

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (Continued)

(Amounts in thousands except per Unit data)

(Unaudited)

	Quarter Ended March 31,
	2021			2020
Comprehensive income:
Net income	$	60,364		$	332,671
Other comprehensive income (loss):
Other comprehensive income (loss) – derivative instruments:
Unrealized holding gains (losses) arising during the period		—			(967	)
Losses reclassified into earnings from other comprehensive income		2,303			5,634
Other comprehensive income (loss)		2,303			4,667
Comprehensive income		62,667			337,338
Comprehensive (income) attributable to Noncontrolling Interests –    Partially Owned Properties		(682	)		(12,530	)
Comprehensive income attributable to controlling interests	$	61,985		$	324,808

See accompanying notes

12

ERP OPERATING LIMITED PARTNERSHIP

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Amounts in thousands)

(Unaudited)

	Quarter Ended March 31,
	2021			2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$	60,364		$	332,671
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation		199,962			212,422
Amortization of deferred financing costs		2,185			2,041
Amortization of above/below market lease intangibles		(18	)		(18	)
Amortization of discounts and premiums on debt		1,294			1,276
Amortization of deferred settlements on derivative instruments		2,301			5,631
Amortization of right-of-use assets		2,980			3,007
Write-off of pursuit costs		1,331			1,627
(Income) loss from investments in unconsolidated entities		1,611			1,157
Distributions from unconsolidated entities – return on capital		—			100
Net (gain) loss on sales of real estate properties		43			(207,977	)
Net (gain) loss on sales of land parcels		(5	)		—
Realized/unrealized (gain) loss on derivative instruments		—			25
Compensation paid with Company Common Shares		8,678			7,844
Other operating activities, net		133			1,805
Changes in assets and liabilities:
(Increase) decrease in other assets		20,746			(18,386	)
Increase (decrease) in accounts payable and accrued expenses		59,116			62,573
Increase (decrease) in accrued interest payable		(10,407	)		(927	)
Increase (decrease) in lease liabilities		(868	)		(621	)
Increase (decrease) in other liabilities		(3,852	)		(20,811	)
Increase (decrease) in security deposits		459			(988	)
Net cash provided by operating activities		346,053			382,451
CASH FLOWS FROM INVESTING ACTIVITIES:
Investment in real estate – development/other		(64,599	)		(52,204	)
Capital expenditures to real estate		(28,679	)		(38,342	)
Non-real estate capital additions		(589	)		(4,516	)
Interest capitalized for real estate under development		(3,769	)		(1,834	)
Proceeds from disposition of real estate, net		—			368,364
Investments in unconsolidated entities		(2,378	)		(5,458	)
Distributions from unconsolidated entities – return of capital		4			—
Other investing activities, net		(26,335	)		(1	)
Net cash provided by (used for) investing activities		(126,345	)		266,009

See accompanying notes

13

ERP OPERATING LIMITED PARTNERSHIP

CONSOLIDATED STATEMENTS OF CASH FLOWS (Continued)

(Amounts in thousands)

(Unaudited)

	Quarter Ended March 31,
	2021			2020
CASH FLOWS FROM FINANCING ACTIVITIES:
Debt financing costs	$	(318	)	$	(181	)
Mortgage notes payable, net:
Proceeds		37,492			78
Lump sum payoffs		(59,880	)		—
Scheduled principal repayments		(1,871	)		(1,941	)
Line of credit and commercial paper:
Line of credit proceeds		—			720,000
Line of credit repayments		—			(740,000	)
Commercial paper proceeds		1,184,923			1,905,818
Commercial paper repayments		(1,170,000	)		(2,291,000	)
Proceeds from (payments on) settlement of derivative instruments		—			(25	)
Finance ground lease principal payments		(116	)		—
Proceeds from EQR’s Employee Share Purchase Plan (ESPP)		1,731			869
Proceeds from exercise of EQR options		22,882			11,151
Contributions – Noncontrolling Interests – Partially Owned Properties		—			341
Contributions – Limited Partners		—			12
Distributions:
OP Units – General Partner		(224,308	)		(211,239	)
Preference Units		(773	)		(773	)
OP Units – Limited Partners		(8,479	)		(8,484	)
Noncontrolling Interests – Partially Owned Properties		(2,883	)		(9,315	)
Net cash provided by (used for) financing activities		(221,600	)		(624,689	)
Net increase (decrease) in cash and cash equivalents and restricted deposits		(1,892	)		23,771
Cash and cash equivalents and restricted deposits, beginning of period		99,728			116,999
Cash and cash equivalents and restricted deposits, end of period	$	97,836		$	140,770
Cash and cash equivalents and restricted deposits, end of period
Cash and cash equivalents	$	35,453		$	82,335
Restricted deposits		62,383			58,435
Total cash and cash equivalents and restricted deposits, end of period	$	97,836		$	140,770

See accompanying notes

14

ERP OPERATING LIMITED PARTNERSHIP

CONSOLIDATED STATEMENTS OF CASH FLOWS (Continued)

(Amounts in thousands)

(Unaudited)

	Quarter Ended March 31,
	2021			2020
SUPPLEMENTAL INFORMATION:
Cash paid for interest, net of amounts capitalized	$	74,058		$	75,561
Net cash paid (received) for income and other taxes	$	752		$	266
Amortization of deferred financing costs:
Investment in real estate, net	$	(60	)	$	(60	)
Other assets	$	585		$	584
Mortgage notes payable, net	$	703		$	403
Notes, net	$	957		$	1,114
Amortization of discounts and premiums on debt:
Mortgage notes payable, net	$	684		$	595
Notes, net	$	610		$	681
Amortization of deferred settlements on derivative instruments:
Other liabilities	$	(2	)	$	(3	)
Accumulated other comprehensive income	$	2,303		$	5,634
Write-off of pursuit costs:
Investment in real estate, net	$	1,209		$	1,586
Other assets	$	114		$	33
Accounts payable and accrued expenses	$	8		$	8
(Income) loss from investments in unconsolidated entities:
Investments in unconsolidated entities	$	1,282		$	830
Other liabilities	$	329		$	327
Realized/unrealized (gain) loss on derivative instruments:
Other liabilities	$	—		$	992
Accumulated other comprehensive income	$	—		$	(967	)
Investments in unconsolidated entities:
Investments in unconsolidated entities	$	(1,778	)	$	(4,558	)
Other liabilities	$	(600	)	$	(900	)
Debt financing costs:
Other assets	$	—		$	(181	)
Mortgage notes payable, net	$	(318	)	$	—
Right-of-use assets and lease liabilities initial measurement and reclassifications:
Right-of-use assets	$	11,308		$	—
Lease liabilities	$	(11,308	)	$	—

See accompanying notes

15

ERP OPERATING LIMITED PARTNERSHIP

CONSOLIDATED STATEMENTS OF CHANGES IN CAPITAL

(Amounts in thousands except per Unit data)

(Unaudited)

	Quarter Ended March 31,
	2021			2020
PARTNERS’ CAPITAL
PREFERENCE UNITS
Balance, beginning of period	$	37,280		$	37,280
Balance, end of period	$	37,280		$	37,280
GENERAL PARTNER
Balance, beginning of period	$	10,532,037		$	10,355,789
OP Unit Issuance:
Conversion of OP Units held by Limited Partners into OP Units held by General Partner		—			1,844
Exercise of EQR share options		22,882			11,151
EQR’s Employee Share Purchase Plan (ESPP)		1,731			869
Share-based employee compensation expense:
EQR restricted shares		2,274			4,023
EQR share options		988			670
EQR ESPP discount		444			153
Net income available to Units – General Partner		56,766			307,833
OP Units – General Partner distributions		(224,673	)		(224,507	)
Supplemental Executive Retirement Plan (SERP)		(1,229	)		149
Change in market value of Redeemable Limited Partners		(72,956	)		111,449
Adjustment for Limited Partners ownership in Operating Partnership		619			(3,440	)
Balance, end of period	$	10,318,883		$	10,565,983
LIMITED PARTNERS
Balance, beginning of period	$	233,162		$	227,837
Issuance of restricted units to Limited Partners		—			12
Conversion of OP Units held by Limited Partners into OP Units held by General Partner		—			(1,844	)
Equity compensation associated with Units – Limited Partners		6,488			5,067
Net income available to Units – Limited Partners		2,143			11,535
Units – Limited Partners distributions		(8,589	)		(9,076	)
Change in carrying value of Redeemable Limited Partners		2,384			(1,391	)
Adjustment for Limited Partners ownership in Operating Partnership		(619	)		3,440
Balance, end of period	$	234,969		$	235,580
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
Balance, beginning of period	$	(43,666	)	$	(77,563	)
Accumulated other comprehensive income (loss) – derivative instruments:
Unrealized holding gains (losses) arising during the period		—			(967	)
Losses reclassified into earnings from other comprehensive income		2,303			5,634
Balance, end of period	$	(41,363	)	$	(72,896	)
DISTRIBUTIONS
Distributions declared per Unit outstanding	$	0.6025		$	0.6025

See accompanying notes

16

ERP OPERATING LIMITED PARTNERSHIP

CONSOLIDATED STATEMENTS OF CHANGES IN CAPITAL (Continued)

(Amounts in thousands except per Unit data)

(Unaudited)

	Quarter Ended March 31,
	2021			2020
NONCONTROLLING INTERESTS
NONCONTROLLING INTERESTS – PARTIALLY OWNED PROPERTIES
Balance, beginning of period	$	4,673		$	1,183
Net income attributable to Noncontrolling Interests		682			12,530
Contributions by Noncontrolling Interests		—			341
Distributions to Noncontrolling Interests		(2,883	)		(9,315	)
Balance, end of period	$	2,472		$	4,739

See accompanying notes

17

EQUITY RESIDENTIAL

ERP OPERATING LIMITED PARTNERSHIP

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

1. Business

Equity Residential (“EQR”) is an S&P 500 company focused on the acquisition, development and management of residential properties located in and around dynamic cities that attract high quality long-term renters, a business that is conducted on its behalf by ERP Operating Limited Partnership (“ERPOP”).  EQR is a Maryland real estate investment trust (“REIT”) formed in March 1993 and ERPOP is an Illinois limited partnership formed in May 1993.  References to the “Company,” “we,” “us” or “our” mean collectively EQR, ERPOP and those entities/subsidiaries owned or controlled by EQR and/or ERPOP.  References to the “Operating Partnership” mean collectively ERPOP and those entities/subsidiaries owned or controlled by ERPOP.  Unless otherwise indicated, the notes to consolidated financial statements apply to both the Company and the Operating Partnership.

EQR is the general partner of, and as of March 31, 2021 owned an approximate 96.4% ownership interest in, ERPOP.  All of the Company’s property ownership, development and related business operations are conducted through the Operating Partnership and EQR has no material assets or liabilities other than its investment in ERPOP.  EQR issues equity from time to time, the net proceeds of which it is obligated to contribute to ERPOP, but does not have any indebtedness as all debt is incurred by the Operating Partnership.  The Operating Partnership holds substantially all of the assets of the Company, including the Company’s ownership interests in its joint ventures.  The Operating Partnership conducts the operations of the business and is structured as a partnership with no publicly traded equity.

As of March 31, 2021, the Company, directly or indirectly through investments in title holding entities, owned all or a portion of 304 properties located in 9 states and the District of Columbia consisting of 77,889 apartment units.  The ownership breakdown includes (table does not include various uncompleted development properties):

	Properties		Apartment Units
Wholly Owned Properties		287		74,328
Master-Leased Property – Consolidated		1		162
Partially Owned Properties – Consolidated		16		3,399
		304		77,889

COVID-19 Pandemic

The continued rapid development and fast-changing nature of the novel coronavirus (“COVID-19”) pandemic creates many unknowns that have had and could continue to have a significant future impact on the Company.  Its duration, severity and the extent of the adverse health impact on the general population, our residents and employees, the rollout and effectiveness of vaccines and the potential long-term changes in customer preferences for living in our communities, are among the many unknowns.  These, among other items, have impacted the economy, the unemployment rate and our operations and could materially affect our future consolidated results of operations, financial condition, liquidity, investments and overall performance.  There have been no material changes to the overall COVID-19 disclosures that were discussed in the notes to the consolidated financial statements of the Company’s and the Operating Partnership’s Annual Report on Form 10-K for the year ended December 31, 2020.

2. Summary of Significant Accounting Policies

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X.  Accordingly, they do not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.  In the opinion of management, all adjustments (consisting of normal recurring accruals) and certain reclassifications considered necessary for a fair presentation have been included.  Operating results for the quarter ended March 31, 2021 are not necessarily indicative of the results that may be expected for the year ending December 31, 2021.

In preparation of the Company’s financial statements in conformity with accounting principles generally accepted in the United States, management makes estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of

18

contingent assets and liabilities at the date of the financial statements as well as the reported amounts of revenues and expenses during the reporting period.  Actual results could differ from these estimates.  In response to the COVID-19 pandemic, management evaluated whether its estimates, such as lease collectibility (discussed below in Recently Adopted Accounting Pronouncements) and impairment, required revised approaches and generally concluded that no revisions were necessary at this time.

The balance sheets at December 31, 2020 have been derived from the audited financial statements at that date but do not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.

For further information, including definitions of capitalized terms not defined herein, refer to the consolidated financial statements and footnotes thereto included in the Company’s and the Operating Partnership’s Annual Report on Form 10-K for the year ended December 31, 2020.

Income and Other Taxes

EQR has elected to be taxed as a REIT.  This, along with the nature of the operations of its operating properties, resulted in no provision for federal income taxes at the EQR level.  In addition, ERPOP generally is not liable for federal income taxes as the partners recognize their allocable share of income or loss in their tax returns; therefore no provision for federal income taxes has been made at the ERPOP level.  Historically, the Company has generally only incurred certain state and local income, excise and franchise taxes.  The Company has elected taxable REIT subsidiary (“TRS”) status for certain of its corporate subsidiaries and, as a result, these entities will incur both federal and state income taxes on any taxable income of such entities after consideration of any net operating losses.

On March 27, 2020, the President signed into law the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”).  The CARES Act was enacted to provide economic relief to companies and individuals in response to the COVID-19 pandemic.  Included in the CARES Act were tax provisions which increased allowable interest expense deductions for 2019 and 2020 and increased the ability for taxpayers to use net operating losses.  These provisions did not result in a material impact to the Company’s taxable income or tax liabilities.

Recently Issued Accounting Pronouncements

In August 2020, the Financial Accounting Standards Board (“FASB”) issued an amendment to the debt and equity financial instruments standards which simplifies the accounting for convertible instruments and accounting for contracts in an entity’s own equity.  Instead of being required to assess whether an equity contract permits settlement in unregistered shares, which may require a legal analysis under the securities laws, entities will only analyze whether cash settlements are explicitly required when registered shares are unavailable.  As a result, such contracts may be classified in permanent rather than mezzanine equity, which may affect the way the Company’s OP Units are presented on its financial statements.  The update is effective for the Company beginning on January 1, 2022 as the Company did not early adopt the standard as allowed on January 1, 2021.  The Company is currently evaluating the impact of adopting the new standard on its consolidated results of operations and financial position.

In March 2020, the FASB issued an amendment to the reference rate reform standard which provides the option for a limited period of time to ease the potential burden in accounting for, or recognizing the effects of, reference rate reform on contract modifications and hedge accounting.  An example of such reform is the expected market transition from the London Interbank Offered Rate (“LIBOR”) and other interbank offered rates to alternative reference rates.  Entities that make this optional expedient election would not have to remeasure the contracts at the modification date or reassess the accounting treatment if certain criteria are met and would continue applying hedge accounting for relationships affected by reference rate reform.  The new standard was effective for the Company upon issuance and elections can be made through December 31, 2022.  The Company is currently evaluating its options with regards to existing contracts and hedging relationships and the impact of adopting this update on its consolidated results of operations and financial position.

19

Recently Adopted Accounting Pronouncements

In April 2020, a FASB staff question and answer document was issued which intended to reduce the challenges of evaluating the enforceable rights and obligations of leases for concessions granted to lessees in response to the COVID-19 pandemic.  We elected not to evaluate whether qualifying concessions provided by the Company in response to the COVID-19 pandemic are a lease modification, subject to the criteria that the total payments under the amended lease cannot result in a substantial increase in the rights of the lessor or obligations of the lessee.  We also elected to treat the concessions as though they were contemplated as part of the existing contracts and therefore will not apply lease modification rules to the qualifying lease concession amendments.  As such, deferrals deemed collectible are recorded as rental receivables with no change to timing of rental revenues and deferrals deemed non-collectible and abatements reduce rental revenues in the deferral/abatement period and cause rental revenues to effectively follow a cash basis related to the changes.  The accounting elections provided by the FASB mainly apply to the Company’s non-residential leases and the majority of the amendments will not require a straight-line adjustment.  See Note 8 for additional discussion.

In June 2016, the FASB issued a standard which requires companies to adopt a new approach for estimating credit losses on certain types of financial instruments, such as trade and other receivables and loans.  The standard requires entities to estimate a lifetime expected credit loss for most financial instruments, including trade receivables.  In November 2018, the FASB issued an amendment excluding operating lease receivables accounted for under the lease standard from the scope of the credit losses standard.  The Company adopted this standard as required effective January 1, 2020 and it did not have a material effect on its consolidated results of operations and financial position.

3. Equity, Capital and Other Interests

The Company refers to “Common Shares” and “Units” (which refer to both OP Units and restricted units) as equity securities for EQR and “General Partner Units” and “Limited Partner Units” as equity securities for ERPOP.  To provide a streamlined and more readable presentation of the disclosures for the Company and the Operating Partnership, several sections below refer to the respective terminology for each with the same financial information and separate sections are provided, where needed, to further distinguish any differences in financial information and terminology.

The following table presents the changes in the Company’s issued and outstanding Common Shares and Units for the quarters ended March 31, 2021 and 2020:

	2021			2020
Common Shares
Common Shares outstanding at January 1,		372,302,000			371,670,884
Common Shares Issued:
Conversion of OP Units		—			41,945
Exercise of share options		506,342			214,521
Employee Share Purchase Plan (ESPP)		32,572			13,606
Restricted share grants, net		76,499			163,098
Common Shares outstanding at March 31,		372,917,413			372,104,054
Units
Units outstanding at January 1,		13,858,073			13,731,315
Restricted unit grants, net		184,301			243,063
Conversion of OP Units to Common Shares		—			(41,945	)
Units outstanding at March 31,		14,042,374			13,932,433
Total Common Shares and Units outstanding at March 31,		386,959,787			386,036,487
Units Ownership Interest in Operating Partnership		3.6	%		3.6	%

The following table presents the changes in the Operating Partnership’s issued and outstanding General Partner Units and Limited Partner Units for the quarters ended March 31, 2021 and 2020:

20

	2021			2020
General and Limited Partner Units
General and Limited Partner Units outstanding at January 1,		386,160,073			385,402,199
Issued to General Partner:
Exercise of EQR share options		506,342			214,521
EQR’s Employee Share Purchase Plan (ESPP)		32,572			13,606
EQR’s restricted share grants, net		76,499			163,098
Issued to Limited Partners:
Restricted unit grants, net		184,301			243,063
General and Limited Partner Units outstanding at March 31,		386,959,787			386,036,487
Limited Partner Units
Limited Partner Units outstanding at January 1,		13,858,073			13,731,315
Limited Partner restricted unit grants, net		184,301			243,063
Conversion of Limited Partner OP Units to EQR Common Shares		—			(41,945	)
Limited Partner Units outstanding at March 31,		14,042,374			13,932,433
Limited Partner Units Ownership Interest in Operating Partnership		3.6	%		3.6	%

The equity positions of various individuals and entities that contributed their properties to the Operating Partnership in exchange for OP Units, as well as the equity positions of the holders of restricted units, are collectively referred to as the “Noncontrolling Interests – Operating Partnership” and “Limited Partners Capital,” respectively, for the Company and the Operating Partnership.  Subject to certain exceptions (including the “book-up” requirements of restricted units), the Noncontrolling Interests – Operating Partnership/Limited Partners Capital may exchange their Units with EQR for Common Shares on a one-for-one basis.  The carrying value of the Noncontrolling Interests – Operating Partnership/Limited Partners Capital (including redeemable interests) is allocated based on the number of Noncontrolling Interests – Operating Partnership/Limited Partners Capital in total in proportion to the number of Noncontrolling Interests – Operating Partnership/Limited Partners Capital in total plus the total number of Common Shares/General Partner Units.  Net income is allocated to the Noncontrolling Interests – Operating Partnership/Limited Partners Capital based on the weighted average ownership percentage during the period.

The Operating Partnership has the right but not the obligation to make a cash payment instead of issuing Common Shares to any and all holders of Noncontrolling Interests – Operating Partnership/Limited Partners Capital requesting an exchange of their Noncontrolling Interests – Operating Partnership/Limited Partners Capital with EQR.  Once the Operating Partnership elects not to redeem the Noncontrolling Interests – Operating Partnership/Limited Partners Capital for cash, EQR is obligated to deliver Common Shares to the exchanging holder of the Noncontrolling Interests – Operating Partnership/Limited Partners Capital.

The Noncontrolling Interests – Operating Partnership/Limited Partners Capital are classified as either mezzanine equity or permanent equity.  If EQR is required, either by contract or securities law, to deliver registered Common Shares, such Noncontrolling Interests – Operating Partnership/Limited Partners Capital are differentiated and referred to as “Redeemable Noncontrolling Interests – Operating Partnership” and “Redeemable Limited Partners,” respectively.  Instruments that require settlement in registered shares cannot be classified in permanent equity as it is not always completely within an issuer’s control to deliver registered shares.  Therefore, settlement in cash is assumed and that responsibility for settlement in cash is deemed to fall to the Operating Partnership as the primary source of cash for EQR, resulting in presentation in the mezzanine section of the balance sheet.  The Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners are adjusted to the greater of carrying value or fair market value based on the Common Share price of EQR at the end of each respective reporting period.  EQR has the ability to deliver unregistered Common Shares for the remaining portion of the Noncontrolling Interests – Operating Partnership/Limited Partners Capital that are classified in permanent equity at March 31, 2021 and December 31, 2020.

The carrying value of the Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners is allocated based on the number of Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners in proportion to the number of Noncontrolling Interests – Operating Partnership/Limited Partners Capital in total.  Such percentage of the total carrying value of Units/Limited Partner Units which is ascribed to the Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners is then adjusted to the greater of carrying value or fair market value as described above.  As of March 31, 2021 and 2020, the Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners have a redemption value of approximately $409.5 million and $353.3 million, respectively, which represents the value of Common Shares that would be issued in exchange for the Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners.

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The following table presents the changes in the redemption value of the Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners for the quarters ended March 31, 2021 and 2020, respectively (amounts in thousands):

	2021			2020
Balance at January 1,	$	338,951		$	463,400
Change in market value		72,956			(111,449	)
Change in carrying value		(2,384	)		1,391
Balance at March 31,	$	409,523		$	353,342

Net proceeds from EQR Common Share and Preferred Share (see definition below) offerings and proceeds from exercise of options for Common Shares are contributed by EQR to ERPOP.  In return for those contributions, EQR receives a number of OP Units in ERPOP equal to the number of Common Shares it has issued in the equity offering (or in the case of a preferred equity offering, a number of preference units in ERPOP equal in number and having the same terms as the Preferred Shares issued in the equity offering).  As a result, the net proceeds from Common Shares and Preferred Shares are allocated for the Company between shareholders’ equity and Noncontrolling Interests – Operating Partnership and for the Operating Partnership between General Partner’s Capital and Limited Partners Capital to account for the change in their respective percentage ownership of the underlying equity.

The Company’s declaration of trust authorizes it to issue up to 100,000,000 preferred shares of beneficial interest, $0.01 par value per share (the “Preferred Shares”), with specific rights, preferences and other attributes as the Board of Trustees may determine, which may include preferences, powers and rights that are senior to the rights of holders of the Company’s Common Shares.

The following table presents the Company’s issued and outstanding Preferred Shares/Preference Units as of March 31, 2021 and December 31, 2020:

				Amounts in thousands
		Annual
	Call	Dividend Per		March 31,		December 31,
	Date (1)	Share/Unit (2)		2021		2020
Preferred Shares/Preference Units of beneficial interest, $0.01 par value;    100,000,000 shares authorized:
8.29% Series K Cumulative Redeemable Preferred Shares/Preference    Units; liquidation value $50 per share/unit; 745,600 shares/units issued    and outstanding as of March 31, 2021 and December 31, 2020	12/10/26	$	4.145	$	37,280	$	37,280
				$	37,280	$	37,280

(1) On or after the call date, redeemable Preferred Shares/Preference Units may be redeemed for cash at the option of the Company or the Operating Partnership, respectively, in whole or in part, at a redemption price equal to the liquidation price per share/unit, plus accrued and unpaid distributions, if any.

(2) Dividends on Preferred Shares/Preference Units are payable quarterly.

Other

EQR and ERPOP currently have an active universal shelf registration statement for the issuance of equity and debt securities that automatically became effective upon filing with the SEC in June 2019 and expires in June 2022.  Per the terms of ERPOP’s partnership agreement, EQR contributes the net proceeds of all equity offerings to the capital of ERPOP in exchange for additional OP Units (on a one-for-one Common Share per OP Unit basis) or preference units (on a one-for-one preferred share per preference unit basis).

The Company has an At-The-Market (“ATM”) share offering program which allows EQR to sell Common Shares from time to time into the existing trading market at current market prices as well as through negotiated transactions.  In June 2019, the Company extended the program maturity to June 2022.  In connection with the extension, the Company may now also sell Common Shares under forward sale agreements.  The use of a forward sale agreement would allow the Company to lock in a price on the sale of Common Shares at the time the agreement is executed, but defer receiving the proceeds from the sale until a later date.  EQR has the authority to issue 13.0 million shares but has not issued any shares under this program since September 2012.

The Company may repurchase up to 13.0 million Common Shares under its share repurchase program.  No open market repurchases have occurred since 2008, and no repurchases of any kind have occurred since February 2014.  As of March 31, 2021, EQR has remaining authorization to repurchase up to 13.0 million of its shares.  

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4. Real Estate

The following table summarizes the carrying amounts for the Company’s investment in real estate (at cost) as of March 31, 2021 and December 31, 2020 (amounts in thousands):

	March 31, 2021			December 31, 2020
Land	$	5,785,367		$	5,785,367
Depreciable property:
Buildings and improvements		18,476,711			18,464,484
Furniture, fixtures and equipment		1,989,219			1,970,033
In-Place lease intangibles		486,137			486,137
Projects under development:
Land		23,531			23,531
Construction-in-progress		452,479			387,603
Land held for development:
Land		46,160			46,160
Construction-in-progress		42,200			40,010
Investment in real estate		27,301,804			27,203,325
Accumulated depreciation		(8,059,619	)		(7,859,657	)
Investment in real estate, net	$	19,242,185		$	19,343,668

The Company did not acquire or sell any assets during the first quarter of 2021.

5. Commitments to Acquire/Dispose of Real Estate

The Company has entered into an agreement to acquire the following (purchase price in thousands):

	Properties		Apartment Units		Purchase Price
Rental Properties - Consolidated		1		280	$	95,200
Total		1		280	$	95,200

The Company has entered into separate agreements to dispose of the following (sales price and net book value in thousands):

	Properties		Apartment Units		Sales Price		Net Book Value at March 31, 2021
Rental Properties - Consolidated		2		340	$	240,000	$	139,411
Total		2		340	$	240,000	$	139,411

The closing of pending transactions is subject to certain conditions and restrictions; therefore, there can be no assurance that the transactions will be consummated or that the final terms will not differ in material respects from any agreements summarized above.  See Note 14 for discussion of the properties acquired or disposed of, if any, subsequent to March 31, 2021.

6. Investments in Partially Owned Entities

The Company has invested in various properties with unrelated third parties which are either consolidated or accounted for under the equity method of accounting (unconsolidated).  

Consolidated Variable Interest Entities (“VIEs”)

In accordance with accounting standards for consolidation of VIEs, the Company consolidates ERPOP on EQR’s financial statements.  As the sole general partner of ERPOP, EQR has exclusive control of ERPOP’s day-to-day management.  The limited partners are not able to exercise substantive kick-out or participating rights.  As a result, ERPOP qualifies as a VIE.  EQR has a controlling financial interest in ERPOP and, thus, is ERPOP’s primary beneficiary.  EQR has the power to direct the activities of ERPOP that most significantly impact ERPOP’s economic performance as well as the obligation to absorb losses or the right to receive benefits from ERPOP that could potentially be significant to ERPOP.  

The Company has various equity interests in certain joint ventures owning 16 properties containing 3,399 apartment units.  The

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Company is the general partner or managing member of these joint ventures and is responsible for managing the operations and affairs of the joint ventures as well as making all decisions regarding the businesses of the joint ventures.  The limited partners or non-managing members are not able to exercise substantive kick-out or participating rights.  As a result, the joint ventures qualify as VIEs.  The Company has a controlling financial interest in the VIEs and, thus, is the VIEs’ primary beneficiary.  The Company has both the power to direct the activities of the VIEs that most significantly impact the VIEs’ economic performance as well as the obligation to absorb losses or the right to receive benefits from the VIEs that could potentially be significant to the VIEs.  As a result, the joint ventures are required to be consolidated on the Company’s financial statements.  

The Company also has two separate consolidated joint ventures which each own land parcels that are being/will be developed into multifamily rental properties.  These joint ventures have been deemed to be VIEs and are consolidated due to the Company being the primary beneficiary.

The consolidated assets and liabilities related to the VIEs discussed above were approximately $780.9 million and $237.8 million, respectively, at March 31, 2021 and approximately $784.1 million and $224.0 million, respectively, at December 31, 2020.

Investments in Unconsolidated Entities

The following table and information summarizes the Company’s investments in unconsolidated entities, which are accounted for under the equity method of accounting as the requirements for consolidation are not met, as of March 31, 2021 and December 31, 2020 (amounts in thousands except for ownership percentage):

	March 31, 2021			December 31, 2020			Ownership Percentage
Investments in Unconsolidated Entities:
Operating Property (VIE) (1)	$	37,731		$	38,288		33.3%
Real Estate Technology (2)		16,036			14,866		Varies
Other		(493	)		(372	)	Varies
Investments in Unconsolidated Entities	$	53,274		$	52,782

(1) Represents an unconsolidated interest in an entity that owns the land underlying one of the consolidated joint venture properties noted above and owns and operates a related parking facility.  The joint venture, as a limited partner, does not have substantive kick-out or participating rights in the entity.  As a result, the entity qualifies as a VIE.  The joint venture does not have a controlling financial interest in the VIE and is not the VIE’s primary beneficiary.  The joint venture does not have the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance or the obligation to absorb losses or the right to receive benefits from the VIE that could potentially be significant to the VIE.  As a result, the entity that owns the land and owns and operates the parking facility is unconsolidated and recorded using the equity method of accounting.

(2) Represents unconsolidated investments in five separate real estate technology funds/companies. 

7. Restricted Deposits

The following table presents the Company’s restricted deposits as of March 31, 2021 and December 31, 2020 (amounts in thousands):

	March 31, 2021		December 31, 2020
Mortgage escrow deposits:
Replacement reserves	$	10,182	$	9,877
Mortgage principal reserves/sinking funds		15,360		14,168
Mortgage escrow deposits		25,542		24,045
Restricted cash:
Earnest money on pending acquisitions		3,500		—
Restricted deposits on real estate investments		302		307
Resident security and utility deposits		31,675		31,412
Other		1,364		1,373
Restricted cash		36,841		33,092
Restricted deposits	$	62,383	$	57,137

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8. Leases

Lessor Accounting

The Company is the lessor for its residential and non-residential leases and these leases will continue to be accounted for as operating leases under the lease standard.

For both the quarters ended March 31, 2021 and 2020, approximately 97% of the Company’s total lease revenue is generated from residential apartment leases that are generally twelve months or less in length.  The residential apartment leases may include lease income related to such items as utility recoveries, parking, storage and pet rent that the Company treats as a single lease component because the amenities cannot be leased on their own and the timing and pattern of revenue recognition are the same.  The collection of lease payments at lease commencement is probable and therefore the Company subsequently recognizes lease income over the lease term on a straight-line basis.  Residential leases are renewable upon consent of both parties on an annual or monthly basis.

For both the quarters ended March 31, 2021 and 2020, approximately 3% of the Company’s total lease revenue is generated by non-residential leases that are generally for terms ranging between five to ten years.  The non-residential leases generally consist of ground floor retail spaces and master-leased parking garages that serve as additional amenities for our residents.  The non-residential leases may include lease income related to such items as utility recoveries, parking rent and storage rent that the Company treats as a single lease component because the amenities cannot be leased on their own and the timing and pattern of revenue recognition are the same.  The collection of lease payments at lease commencement is probable and therefore the Company subsequently recognizes lease income over the lease term on a straight-line basis.  Non-residential leases are renewable with market-based renewal options.

The following table presents the lease income types relating to lease payments for residential and non-residential leases along with the total other rental income for the quarters ended March 31, 2021 and 2020 (amounts in thousands):

	Quarter Ended March 31, 2021								Quarter Ended March 31, 2020
Income Type	Residential Leases			Non-Residential Leases		Total			Residential Leases			Non-Residential Leases			Total
Residential and non-residential rent	$	539,655		$	15,839	$	555,494		$	612,480		$	18,094		$	630,574
Utility recoveries (RUBS income) (1)		17,954			178		18,132			17,418			228			17,646
Parking rent		9,734			267		10,001			9,833			97			9,930
Other lease revenue (2)		(10,262	)		609		(9,653	)		(213	)		(280	)		(493	)
Total lease revenue	$	557,081		$	16,893		573,974		$	639,518		$	18,139			657,657
Parking revenue							5,433									6,783
Other revenue							18,195									17,865
Total other rental income (3)							23,628									24,648
Rental income						$	597,602								$	682,305

(1) RUBS income primarily consists of variable payments representing the recovery of utility costs from residents.

(2) Other lease revenue consists of the revenue adjustment related to bad debt and other miscellaneous lease revenue.

(3) Other rental income is accounted for under the revenue recognition standard.

The economic impact of the pandemic on a subset of our residents and tenants has led to elevated levels of bad debt.  We continue to work with our residents and tenants on payment plans and collections and our bad debt allowance policies remain consistent.

The following table presents residential and non-residential accounts receivable and straight-line receivable balances for the Company’s properties as of March 31, 2021 and December 31, 2020 (amounts in thousands):

	Residential							Non-Residential
Balance Sheet (Other assets):	March 31, 2021				December 31, 2020			March 31, 2021			December 31, 2020
Resident/tenant accounts receivable balances	$	37,248			$	30,856		$	6,847		$	7,598
Allowance for doubtful accounts		(31,799	)			(24,021	)		(5,724	)		(6,527	)
Net receivable balances	$	5,449		(1)	$	6,835		$	1,123		$	1,071
Straight-line receivable balances	$	25,360			$	19,992		$	13,409		$	13,413

(1) The Company held residential security deposits approximating 35.4% of the net receivable balance at March 31, 2021.

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The following table presents residential bad debt for the Company’s properties for the quarters ended March 31, 2021 and 2020 (amounts in thousands):

	Quarter Ended March 31,
Income Statement (Rental income):		2021			2020
Bad debt, net	$	13,693		$	3,784
% of rental income		2.4	%		0.6	%

9. Debt

EQR does not have any indebtedness as all debt is incurred by the Operating Partnership.  Weighted average interest rates noted below for the quarter ended March 31, 2021 include the effect of any derivative instruments and amortization of premiums/discounts/OCI (other comprehensive income) on debt and derivatives.

Mortgage Notes Payable

The following table summarizes the Company’s mortgage notes payable activity for the quarter ended March 31, 2021 (amounts in thousands):

	Mortgage notes payable, net as of December 31, 2020		Proceeds			Lump sum payoffs			Scheduled principal repayments			Amortization of premiums/ discounts		Amortization of deferred financing costs, net (1)		Mortgage notes payable, net as of March 31, 2021
Fixed Rate Debt:
Secured – Conventional	$	1,901,091	$	28,500	(2)	$	(28,200	)	$	(1,871	)	$	378	$	19	$	1,899,917
Floating Rate Debt:
Secured – Conventional		31,494		8,992			—			—			—		60		40,546
Secured – Tax Exempt		361,305		—			(31,680	)		—			306		306		330,237
Floating Rate Debt		392,799		8,992			(31,680	)		—			306		366		370,783
Total	$	2,293,890	$	37,492		$	(59,880	)	$	(1,871	)	$	684	$	385	$	2,270,700

(1) Represents amortization of deferred financing costs, net of debt financing costs.  

(2) Obtained 3.58% fixed rate mortgage debt maturing on March 1, 2031.

The following table summarizes certain interest rate and maturity date information as of and for the quarter ended March 31, 2021:

	March 31, 2021
Interest Rate Ranges	0.05% - 4.21%
Weighted Average Interest Rate	3.18%
Maturity Date Ranges	2022-2061

As of March 31, 2021, the Company had $250.0 million of secured debt (primarily tax-exempt bonds) subject to third party credit enhancement.

Notes

The following table summarizes the Company’s notes activity for the quarter ended March 31, 2021 (amounts in thousands):

	Notes, net as of December 31, 2020		Proceeds		Lump sum payoffs		Realized/unrealized (gain) loss on derivative instruments		Amortization of premiums/ discounts		Amortization of deferred financing costs, net (1)		Notes, net as of March 31, 2021
Fixed Rate Debt:
Unsecured – Public	$	5,335,536	$	—	$	—	$	—	$	610	$	957	$	5,337,103

(1) Represents amortization of deferred financing costs, net of debt financing costs.

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The following table summarizes certain interest rate and maturity date information as of and for the quarter ended March 31, 2021:

	March 31, 2021
Interest Rate Ranges	2.50% - 7.57%
Weighted Average Interest Rate	3.77%
Maturity Date Ranges	2023-2047

The Company’s unsecured public notes contain certain financial and operating covenants including, among other things, maintenance of certain financial ratios.  The Company was in compliance with its unsecured public debt covenants for the quarter ended March 31, 2021.

Line of Credit and Commercial Paper

On November 1, 2019, the Company replaced its existing $2.0 billion facility with a $2.5 billion unsecured revolving credit facility maturing November 1, 2024.  The Company has the ability to increase available borrowings by an additional $750.0 million by adding lenders to the facility, obtaining the agreement of existing lenders to increase their commitments or incurring one or more term loans.  The interest rate on advances under the facility will generally be LIBOR plus a spread (currently 0.775%), or based on bids received from the lending group, and the Company pays an annual facility fee (currently 0.125%).  Both the spread and the facility fee are dependent on the Company’s senior unsecured credit rating.  The Company did not borrow any amounts under its revolving credit facility during the quarter ended March 31, 2021.

On November 4, 2019, the Company increased the maximum aggregate amount outstanding for its commercial paper program from $500.0 million to $1.0 billion.  The notes will be sold under customary terms in the United States commercial paper note market subject to market conditions and will rank pari passu with all of the Company’s other unsecured senior indebtedness.  The notes bear interest at various floating rates with a weighted average interest rate of 0.30% for the quarter ended March 31, 2021 and a weighted average maturity of 69 days as of March 31, 2021.  The weighted average amount outstanding for the quarter ended March 31, 2021 was approximately $457.3 million.

The Company limits its utilization of the revolving credit facility in order to maintain liquidity to support its $1.0 billion commercial paper program along with certain other obligations.  The following table presents the availability on the Company’s unsecured revolving credit facility as of March 31, 2021 (amounts in thousands):

	March 31, 2021
Unsecured revolving credit facility commitment	$	2,500,000
Commercial paper balance outstanding		(430,000	)
Unsecured revolving credit facility balance outstanding		—
Other restricted amounts		(100,699	)
Unsecured revolving credit facility availability	$	1,969,301

Other

The following table summarizes the Company’s total debt extinguishment costs recorded as additional interest expense during the quarter ended March 31, 2021 (amounts in thousands):

	March 31, 2021
Write-offs of unamortized deferred financing costs	$	264

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10. Derivative and Other Fair Value Instruments

The valuation of financial instruments requires the Company to make estimates and judgments that affect the fair value of the instruments.  The Company, where possible, bases the fair values of its financial instruments, including its derivative instruments, on listed market prices and third-party quotes.  Where these are not available, the Company bases its estimates on current instruments with similar terms and maturities or on other factors relevant to the financial instruments.

In the normal course of business, the Company is exposed to the effect of interest rate changes.  The Company may seek to manage these risks by following established risk management policies and procedures including the use of derivatives to hedge interest rate risk on debt instruments.  The Company may also use derivatives to manage commodity prices in the daily operations of the business.

A three-level valuation hierarchy exists for disclosure of fair value measurements.  The valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date.  A financial instrument’s categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement.  The three levels are defined as follows:

• Level 1 – Inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets.

• Level 2 – Inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument.

• Level 3 – Inputs to the valuation methodology are unobservable and significant to the fair value measurement.

The Company’s derivative positions are valued using models developed by the respective counterparty as well as models applied internally by the Company that use as their inputs readily observable market parameters (such as forward yield curves and credit default swap data).  The following table summarizes the inputs to the valuations for each type of fair value measurement:

Fair Value Measurement Type	Valuation Inputs
Employee holdings (other than Common Shares) within the supplemental executive retirement plan (the “SERP”)	Quoted market prices for identical assets. These holdings are included in other assets and other liabilities on the consolidated balance sheets.
Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners	Quoted market price of Common Shares.
Mortgage notes payable and private unsecured debt (including its commercial paper and line of credit, if applicable)	Indicative rates provided by lenders of similar loans.
Public unsecured notes	Quoted market prices for each underlying issuance.

The fair values of the Company’s financial instruments (other than mortgage notes payable, unsecured notes, commercial paper, line of credit and derivative instruments), including cash and cash equivalents and other financial instruments, approximate their carrying or contract value.  The following table provides a summary of the carrying and fair values for the Company’s mortgage notes payable and unsecured debt (including its commercial paper and line of credit, if applicable) at March 31, 2021 and December 31, 2020, respectively (amounts in thousands):

	March 31, 2021				December 31, 2020
	Carrying Value		Estimated Fair Value (Level 2)		Carrying Value		Estimated Fair Value (Level 2)
Mortgage notes payable, net	$	2,270,700	$	2,271,926	$	2,293,890	$	2,313,263
Unsecured debt, net		5,766,856		6,313,039		5,750,366		6,686,612
Total debt, net	$	8,037,556	$	8,584,965	$	8,044,256	$	8,999,875

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The following tables provide a summary of the fair value measurements for each major category of assets and liabilities measured at fair value on a recurring basis and the location within the accompanying consolidated balance sheets at March 31, 2021 and December 31, 2020, respectively (amounts in thousands):

				Fair Value Measurements at Reporting Date Using
Description	Balance Sheet Location	3/31/2021		Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets
Supplemental Executive Retirement Plan	Other Assets	$	154,846	$	154,846	$	—	$	—
Liabilities
Supplemental Executive Retirement Plan	Other Liabilities	$	154,846	$	154,846	$	—	$	—
Redeemable Noncontrolling Interests –
Operating Partnership/Redeemable
Limited Partners	Mezzanine	$	409,523	$	—	$	409,523	$	—

				Fair Value Measurements at Reporting Date Using
Description	Balance Sheet Location	12/31/2020		Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets
Supplemental Executive Retirement Plan	Other Assets	$	160,293	$	160,293	$	—	$	—
Liabilities
Supplemental Executive Retirement Plan	Other Liabilities	$	160,293	$	160,293	$	—	$	—
Redeemable Noncontrolling Interests –
Operating Partnership/Redeemable
Limited Partners	Mezzanine	$	338,951	$	—	$	338,951	$	—

The following tables provide a summary of the effect of cash flow hedges on the Company’s accompanying consolidated statements of operations and comprehensive income for the quarters ended March 31, 2021 and 2020, respectively (amounts in thousands):

	Effective Portion
March 31, 2021 Type of Cash Flow Hedge	Amount of Gain/(Loss) Recognized in OCI on Derivative		Location of Gain/(Loss) Reclassified from Accumulated OCI into Income	Amount of Gain/(Loss) Reclassified from Accumulated OCI into Income
Derivatives designated as hedging instruments:
Interest Rate Contracts:
Forward Starting Swaps	$	—	Interest expense	$	(2,303	)
Total	$	—		$	(2,303	)

	Effective Portion
March 31, 2020 Type of Cash Flow Hedge	Amount of Gain/(Loss) Recognized in OCI on Derivative			Location of Gain/(Loss) Reclassified from Accumulated OCI into Income	Amount of Gain/(Loss) Reclassified from Accumulated OCI into Income
Derivatives designated as hedging instruments:
Interest Rate Contracts:
Forward Starting Swaps	$	(967	)	Interest expense	$	(5,634	)
Total	$	(967	)		$	(5,634	)

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As of March 31, 2021 and December 31, 2020, there were approximately $41.4 million and $43.7 million in deferred losses, net, included in accumulated other comprehensive income (loss), respectively, related to derivative instruments, of which an estimated $10.3 million may be recognized as additional interest expense during the twelve months ending March 31, 2022.

11. Earnings Per Share and Earnings Per Unit

Equity Residential

The following tables set forth the computation of net income per share – basic and net income per share – diluted for the Company (amounts in thousands except per share amounts):

	Quarter Ended March 31,
	2021			2020
Numerator for net income per share – basic:
Net income	$	60,364		$	332,671
Allocation to Noncontrolling Interests – Operating Partnership		(2,143	)		(11,535	)
Net (income) loss attributable to Noncontrolling    Interests – Partially Owned Properties		(682	)		(12,530	)
Preferred distributions		(773	)		(773	)
Numerator for net income per share – basic	$	56,766		$	307,833
Numerator for net income per share – diluted:
Net income	$	60,364		$	332,671
Net (income) loss attributable to Noncontrolling    Interests – Partially Owned Properties		(682	)		(12,530	)
Preferred distributions		(773	)		(773	)
Numerator for net income per share – diluted	$	58,909		$	319,368
Denominator for net income per share – basic and diluted:
Denominator for net income per share – basic		372,280			371,582
Effect of dilutive securities:
OP Units		13,050			13,004
Long-term compensation shares/units		1,586			2,363
Denominator for net income per share – diluted		386,916			386,949
Net income per share – basic	$	0.15		$	0.83
Net income per share – diluted	$	0.15		$	0.83

ERP Operating Limited Partnership

The following tables set forth the computation of net income per Unit – basic and net income per Unit – diluted for the Operating Partnership (amounts in thousands except per Unit amounts):

	Quarter Ended March 31,
	2021			2020
Numerator for net income per Unit – basic and diluted:
Net income	$	60,364		$	332,671
Net (income) loss attributable to Noncontrolling    Interests – Partially Owned Properties		(682	)		(12,530	)
Allocation to Preference Units		(773	)		(773	)
Numerator for net income per Unit – basic and diluted	$	58,909		$	319,368
Denominator for net income per Unit – basic and diluted:
Denominator for net income per Unit – basic		385,330			384,586
Effect of dilutive securities:
Dilution for Units issuable upon assumed exercise/vesting    of the Company’s long-term compensation shares/units		1,586			2,363
Denominator for net income per Unit – diluted		386,916			386,949
Net income per Unit – basic	$	0.15		$	0.83
Net income per Unit – diluted	$	0.15		$	0.83

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12. Commitments and Contingencies

The Company, as an owner of real estate, is subject to various Federal, state and local laws, including, but not limited to, rent regulations and environmental laws.  Compliance by the Company with existing laws has not had a material adverse effect on the Company.  However, the Company cannot predict the impact of new or changed laws or regulations, whether related to COVID-19 or otherwise, on its current properties or on properties that it may acquire in the future.  

The Company does not believe there is any litigation pending or threatened against it that, individually or in the aggregate, may reasonably be expected to have a material adverse effect on the Company.

As of March 31, 2021, the Company has two wholly owned projects and one partially owned project totaling 824 apartment units in various stages of development with remaining commitments to fund of approximately $126.8 million (inclusive of applicable construction mortgage and joint venture partner obligations) and estimated completion dates ranging through December 31, 2021.

As of March 31, 2021, the Company has two joint venture agreements with third-party partners for the consolidated development of multifamily rental properties, one of which is currently under construction as noted above.  The development commitment to fund the project under construction is included in the development funding totals above.  The joint venture agreements with each partner include a buy-sell provision that provides the right, but not the obligation, for the Company to acquire each respective partner’s interests or sell its interests at any time following the occurrence of certain pre-defined events described in the joint venture agreements.  See Note 6 for additional discussion.

13. Reportable Segments

Operating segments are defined as components of an enterprise that engage in business activities from which they may earn revenues and incur expenses and about which discrete financial information is available that is evaluated regularly by the chief operating decision maker.  The chief operating decision maker decides how resources are allocated and assesses performance on a recurring basis at least quarterly.

The Company’s primary business is the acquisition, development and management of multifamily residential properties, which includes the generation of rental and other related income through the leasing of apartment units to residents.  The chief operating decision maker evaluates the Company’s operating performance geographically by market and both on a same store and non-same store basis.  While the Company does maintain a non-residential presence, it accounts for approximately 3.8% of total revenues for the quarter ended March 31, 2021 and is designed as an amenity for our residential residents.  The chief operating decision maker evaluates the performance of each property on a consolidated residential and non-residential basis.  The Company’s geographic consolidated same store operating segments represent its reportable segments.

The Company’s development activities are other business activities that do not constitute an operating segment and as such, have been aggregated in the “Other” category in the tables presented below.

All revenues are from external customers and there is no customer who contributed 10% or more of the Company’s total revenues during the quarters ended March 31, 2021 and 2020, respectively.

The primary financial measure for the Company’s rental real estate segment is net operating income (“NOI”), which represents rental income less: 1) property and maintenance expense and 2) real estate taxes and insurance expense (all as reflected in the accompanying consolidated statements of operations and comprehensive income).  The Company believes that NOI is helpful to investors as a supplemental measure of its operating performance because it is a direct measure of the actual operating results of the Company’s apartment properties.  Revenues for all leases are reflected on a straight-line basis in accordance with GAAP for the current and comparable periods.

The following table presents a reconciliation of NOI from our rental real estate for the quarters ended March 31, 2021 and 2020, respectively (amounts in thousands):

	Quarter Ended March 31,
	2021			2020
Rental income	$	597,602		$	682,305
Property and maintenance expense		(117,054	)		(115,816	)
Real estate taxes and insurance expense		(103,470	)		(97,732	)
Total operating expenses		(220,524	)		(213,548	)
Net operating income	$	377,078		$	468,757

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The following tables present NOI for each segment from our rental real estate for the quarters ended March 31, 2021 and 2020, respectively, as well as total assets and capital expenditures at March 31, 2021 (amounts in thousands):

	Quarter Ended March 31, 2021							Quarter Ended March 31, 2020
	Rental Income		Operating Expenses		NOI			Rental Income		Operating Expenses		NOI
Same store (1)
Los Angeles	$	116,345	$	39,201	$	77,144		$	126,495	$	38,837	$	87,658
Orange County		25,841		6,336		19,505			26,695		6,172		20,523
San Diego		18,740		4,639		14,101			18,777		4,585		14,192
Subtotal - Southern California		160,926		50,176		110,750			171,967		49,594		122,373
San Francisco		105,332		33,275		72,057			125,102		31,796		93,306
Washington D.C.		99,117		33,321		65,796			104,718		32,103		72,615
New York		99,754		53,076		46,678			118,025		50,909		67,116
Seattle		61,709		19,799		41,910			68,869		18,683		50,186
Boston		56,606		19,374		37,232			63,683		18,327		45,356
Denver		9,344		3,031		6,313			9,657		2,789		6,868
Total same store		592,788		212,052		380,736			662,021		204,201		457,820
Non-same store/other (2) (3)
Non-same store		4,660		1,445		3,215			4,163		1,246		2,917
Other (3)		154		7,027		(6,873	)		16,121		8,101		8,020
Total non-same store/other		4,814		8,472		(3,658	)		20,284		9,347		10,937
Totals	$	597,602	$	220,524	$	377,078		$	682,305	$	213,548	$	468,757

(1) For the quarters ended March 31, 2021 and 2020, same store primarily includes all properties acquired or completed that were stabilized prior to January 1, 2020, less properties subsequently sold, which represented 77,060 apartment units.

(2) For the quarters ended March 31, 2021 and 2020, non-same store primarily includes properties acquired after January 1, 2020, plus any properties in lease-up and not stabilized as of January 1, 2020.

(3) Other includes development, other corporate operations and operations prior to disposition for properties sold.

	Quarter Ended March 31, 2021
	Total Assets		Capital Expenditures
Same store (1)
Los Angeles	$	3,220,144	$	4,666
Orange County		384,585		1,056
San Diego		240,071		679
Subtotal - Southern California		3,844,800		6,401
San Francisco		3,472,556		3,936
Washington D.C.		3,323,572		6,325
New York		3,971,142		5,993
Seattle		2,010,532		2,139
Boston		1,742,381		3,469
Denver		507,264		355
Total same store		18,872,247		28,618
Non-same store/other (2) (3)
Non-same store		297,717		62
Other (3)		999,051		(1	)
Total non-same store/other		1,296,768		61
Totals	$	20,169,015	$	28,679

(1) Same store primarily includes all properties acquired or completed that were stabilized prior to January 1, 2020, less properties subsequently sold, which represented 77,060 apartment units.

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(2) Non-same store primarily includes properties acquired after January 1, 2020, plus any properties in lease-up and not stabilized as of January 1, 2020.

(3) Other includes development, other corporate operations and capital expenditures for properties sold.

14. Subsequent Events

Subsequent to March 31, 2021, the Company:

• Sold two properties consisting of 333 apartment units for $123.8 million.

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Item 2.  Management’s Discussion and Analysis of Financial Condition and Results of Operations

For further information including definitions for capitalized terms not defined herein, refer to the consolidated financial statements and footnotes thereto included in the Company’s and the Operating Partnership’s Annual Report on Form 10-K for the year ended December 31, 2020.  In addition, please refer to the Definitions section below for various capitalized terms not immediately defined in this Item 2, Management’s Discussion and Analysis of Financial Condition and Results of Operations.

Forward-Looking Statements

Forward-looking statements are intended to be made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995.  These statements are based on current expectations, estimates, projections and assumptions made by management.  While the Company’s management believes the assumptions underlying its forward-looking statements are reasonable, such information is inherently subject to uncertainties and may involve certain risks, which could cause actual results, performance or achievements of the Company to differ materially from anticipated future results, performance or achievements expressed or implied by such forward-looking statements.  Many of these uncertainties and risks are difficult to predict and beyond management’s control, such as the current novel coronavirus (“COVID-19”) pandemic (see below for further discussion).  Forward-looking statements are not guarantees of future performance, results or events.  The forward-looking statements contained herein are made as of the date hereof and the Company undertakes no obligation to update or supplement these forward-looking statements.  

In addition, these forward-looking statements are subject to risks related to the COVID-19 pandemic, many of which are unknown, including the duration and severity of the pandemic, the extent of the adverse health impact on the general population and on our residents, customers and employees in particular, its impact on the employment rate and the economy and the corresponding impact on our residents’ and tenants’ ability to pay their rent on time or at all, the impact on resident housing preferences especially for urban apartment living, the extent and impact of governmental responses, the rollout and effectiveness of vaccines and the impact of operational changes we have implemented and may implement in response to the pandemic.

Additional factors that might cause such differences are discussed in Part I of the Company’s and the Operating Partnership’s Annual Report on Form 10-K for the year ended December 31, 2020, particularly those under Item 1A, Risk Factors.

Forward-looking statements and related uncertainties are also included in the Notes to Consolidated Financial Statements in this report. The 2021 guidance assumptions disclosed throughout this Item 2 are based on current expectations and are forward-looking.

Overview

Equity Residential (“EQR”) is committed to creating communities where people thrive.  The Company, a member of the S&P 500, is focused on the acquisition, development and management of residential properties located in and around dynamic cities that attract high quality long-term renters.  ERP Operating Limited Partnership (“ERPOP”) is focused on conducting the multifamily property business of EQR.  EQR is a Maryland real estate investment trust (“REIT”) formed in March 1993 and ERPOP is an Illinois limited partnership formed in May 1993.  References to the “Company,” “we,” “us” or “our” mean collectively EQR, ERPOP and those entities/subsidiaries owned or controlled by EQR and/or ERPOP.  References to the “Operating Partnership” mean collectively ERPOP and those entities/subsidiaries owned or controlled by ERPOP.  

EQR is the general partner of, and as of March 31, 2021 owned an approximate 96.4% ownership interest in, ERPOP.  All of the Company’s property ownership, development and related business operations are conducted through the Operating Partnership and EQR has no material assets or liabilities other than its investment in ERPOP.  EQR issues equity from time to time, the net proceeds of which it is obligated to contribute to ERPOP, but does not have any indebtedness as all debt is incurred by the Operating Partnership.  The Operating Partnership holds substantially all of the assets of the Company, including the Company’s ownership interests in its joint ventures.  The Operating Partnership conducts the operations of the business and is structured as a partnership with no publicly traded equity.

The Company’s corporate headquarters is located in Chicago, Illinois and the Company also operates regional property management offices in each of its markets.

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Available Information

You may access our Annual Report on Form 10-K, our Quarterly Reports on Form 10-Q, our Current Reports on Form 8-K, our proxy statements and any amendments to any of those reports/statements we file with the Securities and Exchange Commission (“SEC”) free of charge on our website, www.equityapartments.com.  These reports/statements are made available on our website as soon as reasonably practicable after we file them with the SEC.  The information contained on our website, including any information referred to in this report as being available on our website, is not a part of or incorporated into this report.

Business Objectives and Operating and Investing Strategies

The Company’s and the Operating Partnership’s overall business objectives and operating and investing strategies have not changed from the information included in the Company’s and the Operating Partnership’s Annual Report on Form 10-K for the year ended December 31, 2020.  As more fully discussed in the Company’s and the Operating Partnership’s Annual Report on Form 10-K, it continues to be the Company’s intention over time to further diversify its portfolio into select new markets that share similar characteristics as its current markets and to optimize the mix of the Company’s properties located in urban vs. dense suburban submarkets within its existing markets.

COVID-19 Impact

The Company's and the Operating Partnership's overall impact from the COVID-19 pandemic has not changed materially from the information included in the Company's and the Operating Partnership's Annual Report on Form 10-K for the year ended December 31, 2020.  As more fully discussed in the Company's and the Operating Partnership's Annual Report on Form 10-K, despite the impact of COVID-19, we continue to believe that the long-term prospects for our business remain strong.  See the Results of Operations discussion below for additional information on how the COVID-19 pandemic is currently impacting our markets and operations.

Results of Operations

2021 Transactions

The Company did not acquire or sell any assets during the first quarter of 2021.  See Note 4 in the Notes to Consolidated Financial Statements for additional discussion regarding the Company’s real estate transactions.

The Company’s guidance assumes consolidated rental acquisitions will be approximately equal to consolidated rental dispositions for the full year ending December 31, 2021.  We currently anticipate spending approximately $240.0 million on development costs during the year ending December 31, 2021, of which approximately $64.6 million was spent during the quarter ended March 31, 2021, primarily for properties currently under construction.  Certain of these costs are expected to be funded by third-party construction mortgages and joint venture partner obligations.  Work at all of our development projects continues with no material delays notwithstanding some brief disruptions from governmental construction moratoriums due to COVID-19.

Same Store Results

Properties that the Company owned and were stabilized (see definition below) for all of both of the quarters ended March 31, 2021 and 2020 (the “First Quarter 2021 Same Store Properties”), which represented 77,060 apartment units, drove the Company’s results of operations.  The First Quarter 2021 Same Store Properties are discussed in the following paragraphs.

The Company’s primary financial measure for evaluating each of its apartment communities is net operating income (“NOI”).  NOI represents rental income less direct property operating expenses (including real estate taxes and insurance).  The Company believes that NOI is helpful to investors as a supplemental measure of its operating performance because it is a direct measure of the actual operating results of the Company’s apartment properties.

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The following tables provide a rollforward of the apartment units included in Same Store Properties and a reconciliation of apartment units included in Same Store Properties to those included in Total Properties for the quarter ended March 31, 2021:

	Quarter Ended March 31, 2021
	Properties			Apartment Units
Same Store Properties at December 31, 2020		285			73,585
2019 acquisitions stabilized		12			3,323
Lease-up properties stabilized		1			222
Properties removed from same store (1)		(1	)		(70	)
Same Store Properties at March 31, 2021		297			77,060

	Quarter Ended March 31, 2021
	Properties		Apartment Units
Same Store		297		77,060
Non-Same Store:
2020 acquisitions		1		158
2019 acquisitions not yet stabilized		1		217
Properties removed from same store (1)		1		70
Master-Leased properties (2)		1		162
Lease-up properties not yet stabilized (3)		2		221
Other		1		1
Total Non-Same Store		7		829
Total Properties and Apartment Units		304		77,889

Note: Properties are considered “stabilized” when they have achieved 90% occupancy for three consecutive months.  Properties are included in same store when they are stabilized for all of the current and comparable periods presented.

(1) Citrus Suites in Santa Monica, California containing 70 apartment units was removed from the same store portfolio in the first quarter of 2021.  The property was sold on April 15, 2021.  In anticipation of the sale, the Company allowed the property’s Physical Occupancy to decline to 35.7% at March 31, 2021 in order to facilitate the purchaser’s ability to immediately begin an extensive renovation post-sale.

(2) Consists of one property containing 162 apartment units that is wholly owned by the Company where the entire project is master-leased to a third-party corporate housing provider.

(3) Consists of properties in various stages of lease-up and properties where lease-up has been completed but the properties were not stabilized for the comparable periods presented.

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The following tables present reconciliations of operating income per the consolidated statements of operations to NOI, along with rental income, operating expenses and NOI per the consolidated statements of operations allocated between same store and non-same store results (amounts in thousands):

	Quarter Ended March 31,
	2021			2020
Operating income	$	135,560		$	422,085
Adjustments:
Property management		26,130			27,709
General and administrative		15,383			14,518
Depreciation		199,962			212,422
Net (gain) loss on sales of real estate properties		43			(207,977	)
Total NOI	$	377,078		$	468,757
Rental income:
Same store	$	592,788		$	662,021
Non-same store/other		4,814			20,284
Total rental income		597,602			682,305
Operating expenses:
Same store		212,052			204,201
Non-same store/other		8,472			9,347
Total operating expenses		220,524			213,548
NOI:
Same store		380,736			457,820
Non-same store/other		(3,658	)		10,937
Total NOI	$	377,078		$	468,757

The following table provides comparative total same store results and statistics for the First Quarter 2021 Same Store Properties:

First Quarter 2021 vs. First Quarter 2020

Same Store Results/Statistics Including 77,060 Same Store Apartment Units

$ in thousands (except for Average Rental Rate)

First Quarter 2021																		First Quarter 2020
	Residential			% Change			Non- Residential			% Change			Total		% Change				Residential			Non- Residential		Total
Revenues	$	570,927			(10.6	%)	$	21,861	(1)		(6.3	%)	$	592,788		(10.5	%)	Revenues	$	638,683		$	23,338	$	662,021
Expenses	$	205,959			3.9	%	$	6,093			3.4	%	$	212,052		3.8	%	Expenses	$	198,306		$	5,895	$	204,201
NOI	$	364,968			(17.1	%)	$	15,768			(9.6	%)	$	380,736		(16.8	%)	NOI	$	440,377		$	17,443	$	457,820
Average Rental Rate	$	2,601			(9.3	%)												Average Rental Rate	$	2,867
Physical Occupancy		95.0	%		(1.4	%)												Physical Occupancy		96.4	%
Turnover		9.9	%		0.2	%												Turnover		9.7	%

Note: Same store revenues for all leases are reflected on a straight-line basis in accordance with GAAP for the current and comparable periods.

(1) Changes in same store Non-Residential revenues are primarily driven by the deferral/abatement of rents, higher bad debt and lower parking income.

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The following table provides results and statistics related to our Residential same store operations for the quarters ended March 31, 2021 and 2020:

First Quarter 2021 vs. First Quarter 2020

Same Store Residential Results/Statistics by Market

														Increase (Decrease) from Prior Year's Quarter
Markets/Metro Areas	Apartment Units		Q1 2021 % of Actual NOI			Q1 2021 Average Rental Rate		Q1 2021 Weighted Average Physical Occupancy %			Q1 2021 Turnover			Revenues			Expenses			NOI			Average Rental Rate			Physical Occupancy			Turnover
Los Angeles		16,533		20.9	%	$	2,423		95.8	%		10.1	%		(8.1	%)		1.1	%		(12.2	%)		(7.9	%)		(0.2	%)		(1.0	%)
Orange County		4,028		5.3	%		2,205		97.0	%		7.8	%		(3.2	%)		2.7	%		(4.9	%)		(3.3	%)		0.2	%		(1.2	%)
San Diego		2,706		3.9	%		2,376		97.2	%		10.5	%		(0.2	%)		1.2	%		(0.6	%)		(0.6	%)		0.4	%		(0.8	%)
Subtotal – Southern California		23,267		30.1	%		2,380		96.2	%		9.7	%		(6.5	%)		1.3	%		(9.6	%)		(6.4	%)		(0.1	%)		(1.1	%)
San Francisco		12,707		19.5	%		2,903		93.8	%		11.4	%		(15.7	%)		4.7	%		(22.6	%)		(13.1	%)		(2.9	%)		1.7	%
Washington D.C.		14,569		17.6	%		2,325		95.9	%		9.7	%		(5.5	%)		4.0	%		(9.6	%)		(5.2	%)		(0.3	%)		1.1	%
New York		9,606		11.0	%		3,464		91.4	%		8.3	%		(16.9	%)		4.4	%		(34.0	%)		(12.2	%)		(5.3	%)		1.1	%
Seattle		8,941		10.7	%		2,258		95.7	%		11.1	%		(10.3	%)		6.0	%		(16.5	%)		(9.0	%)		(1.4	%)		0.0	%
Boston		6,346		9.4	%		2,852		95.3	%		8.9	%		(10.8	%)		4.9	%		(17.2	%)		(10.3	%)		(0.5	%)		(0.2	%)
Denver		1,624		1.7	%		1,984		96.1	%		12.3	%		(2.7	%)		9.5	%		(7.7	%)		(3.4	%)		0.6	%		(2.1	%)
Total		77,060		100.0	%	$	2,601		95.0	%		9.9	%		(10.6	%)		3.9	%		(17.1	%)		(9.3	%)		(1.4	%)		0.2	%

Note: The above table reflects Residential same store results only.  Residential operations account for approximately 96.2% of total revenues for the quarter ended March 31, 2021.

The following table includes select operating metrics for Residential Same Store Properties:

	Q4 2020			Q1 2021			April 2021 (1)
Physical Occupancy (2)		94.4	%		95.6	%		96.0	%
Percentage of Residents Renewing by quarter/month		51.0	%		53.0	%		56.0	%
New Lease Change		(20.5	%)		(17.7	%)		(11.4	%)
Renewal Rate Achieved		(3.4	%)		(5.1	%)		(2.1	%)
Blended Rate		(13.0	%)		(12.1	%)		(7.2	%)

(1) April 2021 results are preliminary.

(2) Physical Occupancy is as of month-end December for Q4 2020, month-end March for Q1 2021 and as of April 22 for April 2021.

The following table provides guidance for our expected full year 2021 same store operating performance (includes Residential and Non-Residential):

	Revised Full Year 2021	Previous Full Year 2021
Physical Occupancy	95.0% to 96.0%	94.8% to 95.8%
Revenue change	(8.0%) to (6.0%)	(9.0%) to (7.0%)
Expense change	3.0% to 4.0%	3.0% to 4.0%
NOI change	(13.0%) to (11.0%)	(15.0%) to (12.0%)

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Although the results for the first quarter of 2021 reflect the significant impact of the pandemic on our business, we continue to see substantial signs of improvement as cities begin to reopen and affluent renters return.  Operating performance has improved ahead of expectations across our portfolio.  Strong demand is driving improved Physical Occupancy in all of our markets and as a result we see the return of pricing power and the continued decline of Leasing Concessions across the portfolio.  Non-Residential revenues also continue to benefit from reopening activities and have shown improvement driven by fewer rent abatements and less bad debt than originally anticipated.  For these reasons, we believe our results will improve earlier in 2021 than previously anticipated.  The Company remains focused on the following key operating drivers:

• Demand and Physical Occupancy – Strong demand through both the winter season and early spring characterized by elevated applications and move-in activity above the seasonal norms has fueled better-than-expected Physical Occupancy.  Physical Occupancy of 96.0% on April 22, 2021 exceeded April 2020 levels for the first time since the beginning of the pandemic and is beginning to approach April 2019 levels.  This strength in Physical Occupancy is contributing to our ability to focus on improving pricing.

• Renewal Rates and Percentage of Residents Renewing – We continue to experience negotiation pressure on Renewal Rate Achieved as we are still renewing residents who signed leases pre-pandemic.  Outside of Southern California and Denver, our other markets still have net effective prices below prior year levels which puts pressure on renewal negotiations.  This situation is improving weekly and we currently expect most of the markets to be positive by the end of May 2021.  In terms of the quantity of renewals, the Percentage of Residents Renewing their leases stands at approximately 56% into April 2021.  These levels remain below our historical average for this time of year, but they continue to steadily improve.

• Pricing – We have seen significant improvement in pricing (net of Leasing Concessions) since the end of the fourth quarter of 2020.  This trend has been pervasive across our portfolio even in some of the harder hit markets like New York and San Francisco.  We continue to test price sensitivity in every market by raising rents and reducing both the value and quantity of Leasing Concessions being granted.  Monthly Leasing Concessions granted began to decline in March 2021.  Leasing Concessions granted in February, March and April (preliminary) 2021 are $6.1 million, $4.9 million and $3.6 million, respectively.  New Lease Change continues to improve as do Renewal Rates Achieved, which will contribute to improved Blended Rates.  

The following table provides Physical Occupancy by geographic market for the First Quarter 2021 Same Store Properties:

Markets/Metro Areas	December 31, 2020			March 31, 2021			April 22, 2021
Boston		94.7	%		95.5	%		96.3	%
New York		89.7	%		93.9	%		94.8	%
Washington D.C.		95.9	%		95.9	%		96.3	%
Seattle		95.4	%		95.5	%		95.4	%
San Francisco		93.0	%		95.0	%		95.3	%
Los Angeles		95.3	%		96.1	%		96.4	%
Orange County		96.6	%		97.6	%		97.8	%
San Diego		97.2	%		97.7	%		97.9	%
Denver		96.0	%		96.5	%		96.6	%
Total		94.4	%		95.6	%		96.0	%

In summary, the pace of recovery is exceeding our prior expectations and early gains in both Physical Occupancy and pricing has positioned our portfolio well leading us to raise our same store revenue and NOI guidance for the full year 2021.  See below for specific discussion on operating performance by geographic market:

• Boston – Performance has improved with solid leasing and reductions in Leasing Concession use.  Physical Occupancy and pricing continued to significantly improve during the first quarter of 2021.  We are also beginning to see early signs of students returning to this market which should continue to aid demand.  The market is expected to experience some headwinds from new supply, particularly in the urban core where we are still dealing with non-stabilized lease-ups from last year as well as a few newly constructed properties expected to begin lease-up in the back half of 2021.

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• New York – New York has seen improvement during the first quarter of 2021 which has continued into April 2021, with demand remaining elevated.  Leasing Concessions have started to decline but remain a prevalent part of the marketing strategy in this market even while we are raising rents.  Physical Occupancy and pricing have significantly improved during the first quarter of 2021.  Percentage of Residents Renewing for March 2021 is 58%.  Our focus for New York continues to be recapturing Physical Occupancy and rate while lowering, or eliminating, Leasing Concessions.

• Washington, D.C. – Washington, D.C. has shown relatively steady performance throughout the pandemic and shows good momentum heading into peak leasing season.  Physical Occupancy held up better in this market than in any of our other East Coast markets and pricing has continued to improve.  Thus far, despite the pandemic, absorption of new supply has generally remained healthy but continued absorption of additional new supply will be a determining factor of performance for the remainder of 2021.

• Seattle – Physical Occupancy started to recover and pricing has improved significantly during the first quarter of 2021, though the market has experienced temporary periods of price resistance.

• San Francisco – San Francisco’s pace of recovery is ahead of expectations.  Leasing activity remains elevated and demand is strong.  Leasing Concession use has pulled back notably with pricing improving significantly since the end of 2020.  Physical Occupancy is now over 95%, 2.3 percentage points higher since the end of 2020.

• Los Angeles – Los Angeles has shown resilience and signs of strengthening as Physical Occupancy and pricing have been relatively stable throughout the pandemic.  Leasing Concession use is limited.  Bad debt in Los Angeles remains the most elevated in our portfolio.  We continue to work with our residents to apply for federally sponsored rental assistance.

• Orange County and San Diego – Both markets continue to stand out in terms of performance.  Physical Occupancy and pricing have remained strong during the pandemic and continue to improve.  Percentage of Residents Renewing in Orange County has surpassed pre-pandemic levels and we have very limited Leasing Concession usage in both of these markets.

• Denver – While still a relatively small market for the Company, this portfolio is delivering solid and steady performance.  Demand remains strong across the market although pricing pressure and widespread Leasing Concession use are common due to competition from new supply in the urban center.  New supply will be elevated from 2020 levels but improved job growth should help drive absorption.

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As we head into our primary leasing season, we see considerable positive momentum in our operations and we expect to further reduce Leasing Concessions and increase rental rates in light of the strong demand we see across our markets.  

Despite strong rent collections throughout the pandemic, the financial impact of a small subset of our residents and Non-Residential tenants not paying has led to higher levels of bad debt than we have historically experienced.  We continue to work with our residents, including assisting them in applying for federally sponsored rental assistance, and Non-Residential tenants on meeting their financial obligations and our bad debt allowance policies remain consistent with those in place before the pandemic.  We expect our reserves and bad debt expense to remain elevated in 2021.  See Note 8 in the Notes to Consolidated Financial Statements for additional discussion of leases at March 31, 2021.

The following table provides comparative same store operating expenses for the First Quarter 2021 Same Store Properties:

First Quarter 2021 vs. First Quarter 2020

Total Same Store Operating Expenses Including 77,060 Same Store Apartment Units

$ in thousands

	Q1 2021		Q1 2020		$ Change (5)			% Change			% of Q1 2021 Operating Expenses
Real estate taxes	$	90,767	$	88,323	$	2,444			2.8	%		42.8	%
On-site payroll (1)		42,993		43,009		(16	)		0.0	%		20.3	%
Utilities (2)		29,945		27,674		2,271			8.2	%		14.1	%
Repairs and maintenance (3)		25,835		23,439		2,396			10.2	%		12.2	%
Insurance		7,040		6,321		719			11.4	%		3.3	%
Leasing and advertising		2,803		2,337		466			19.9	%		1.3	%
Other on-site operating expenses (4)		12,669		13,098		(429	)		(3.3	)%		6.0	%
Total Same Store Operating Expenses (includes Residential and Non-Residential)	$	212,052	$	204,201	$	7,851			3.8	%		100.0	%

(1) On-site payroll – Includes payroll and related expenses for on-site personnel including property managers, leasing consultants and maintenance staff.

(2) Utilities – Represents gross expenses prior to any recoveries under the Resident Utility Billing System (“RUBS”).  Recoveries are reflected in rental income.

(3) Repairs and maintenance – Includes general maintenance costs, apartment unit turnover costs including interior painting, routine landscaping, security, exterminating, fire protection, snow removal, elevator, roof and parking lot repairs and other miscellaneous building repair and maintenance costs.

(4) Other on-site operating expenses – Includes ground lease costs and administrative costs such as office supplies, telephone and data charges and association and business licensing fees.

(5) The quarter-over-quarter changes were primarily affected by the following factors:

• Real estate taxes – Increase is lower than prior expectations due to lower rates and assessed values.

• On-site payroll – Improved sales and service staff utilization from various technology initiatives offset other general payroll pressures.

• Utilities – Increase driven by higher usage of water, sewer and trash.

• Repairs and maintenance – Increase primarily driven by non-comparable items like greater snowfall on the East Coast and higher turnover expense from accelerated leasing as well as increases in minimum wage on contract services.

• Insurance – Increase due to higher premiums on property insurance renewal due to challenging conditions in the insurance market.

• Leasing and advertising – Increase due primarily to increased digital advertising and selective use of outside broker fees on targeted leasing activity.

• Other on-site operating expenses – Decrease primarily driven by lower ground lease costs due to a lease modification at one property. 

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   The Company now anticipates same store NOI to decline for the full year 2021 by approximately 13.0% to 11.0% (previously was anticipated to decline by approximately 15.0% to 12.0%) primarily driven by the expected improvement in same store revenues discussed above.  We continue to anticipate same store expenses to increase between 3.0% to 4.0% for 2021 as compared to 2020.  Given the continued uncertainty resulting from the COVID-19 pandemic, we anticipate the possibility of greater variability around the midpoint, up or down, within these ranges than we would typically experience.

See also Note 13 in the Notes to Consolidated Financial Statements for additional discussion regarding the Company’s segment disclosures.

Non-Same Store/Other Results

Non-same store/other NOI results for the quarter ended March 31, 2021 decreased approximately $14.6 million compared to the same period of 2020.  These results consist primarily of properties acquired in calendar year 2020, operations from the Company’s development properties and operations prior to disposition from 2020 sold properties.  This difference is due primarily to:

• A negative impact of lower NOI from development and newly stabilized development properties in lease-up of $0.1 million;

• A positive impact of higher NOI from non-stabilized properties acquired in 2019 and 2020 of $0.7 million;

• A negative impact of lower NOI from other non-same store properties (including one master-leased property) of $0.4 million; and

• A negative impact of lost NOI from 2020 dispositions of $11.4 million.

Comparison of the quarter ended March 31, 2021 to the quarter ended March 31, 2020

The following table presents a reconciliation of diluted earnings per share/unit for the quarter ended March 31, 2021 as compared to the same period in 2020:

	Quarter Ended March 31
Diluted earnings per share/unit for period ended 2020	$	0.83
Property NOI		(0.23	)
Interest expense		0.05
Net gain/loss on property sales		(0.51	)
Other		0.01
Diluted earnings per share/unit for period ended 2021	$	0.15

The decrease in consolidated NOI is primarily a result of the Company’s lower NOI from same store properties, largely due to the economic impact from the COVID-19 pandemic.  The following table presents the changes in the components of consolidated NOI for the quarter ended March 31, 2021 as compared to the same period in 2020:

	Quarter Ended March 31, 2021
Consolidated rental income		(12.4	%)
Consolidated operating expenses (1)		3.3	%
Consolidated NOI		(19.6	%)

(1) Consolidated operating expenses are comprised of property and maintenance and real estate taxes and insurance.

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Property management expenses include off-site expenses associated with the self-management of the Company’s properties as well as management fees paid to any third-party management companies.  These expenses decreased approximately $1.6 million or 5.7% during the quarter ended March 31, 2021 as compared to the prior year period.  This decrease is primarily attributable to decreases in payroll-related costs, travel costs and legal and professional fees, partially offset by increases in information technology related costs specifically for various operating initiatives such as sales-focused improvements and service enhancements.  The Company anticipates that property management expenses will approximate $96.5 million to $98.5 million for the year ending December 31, 2021.

General and administrative expenses, which include corporate operating expenses, increased approximately $0.9 million or 6.0% during the quarter ended March 31, 2021 as compared to the prior year period, primarily due to increases in payroll-related costs, partially offset by decreases in office rent as a result of the consolidation of space at the Company’s corporate headquarters.  The Company anticipates that general and administrative expenses will approximate $53.0 million to $55.0 million for the year ending December 31, 2021.

Depreciation expense, which includes depreciation on non-real estate assets, decreased approximately $12.5 million or 5.9% during the quarter ended March 31, 2021 as compared to the prior year period. This decrease is primarily due to in-place leases for 2019 acquisitions being fully depreciated as of December 31, 2020 and the Company being a net seller during 2020, which resulted in lower depreciation in the current period.

Net gain on sales of real estate properties decreased approximately $208.0 million during the quarter ended March 31, 2021 as compared to the prior year period, primarily as a result of no consolidated property sales in the first quarter of 2021 as compared to the sale of three consolidated apartment properties in the same period in 2020.

Interest and other income decreased approximately $1.7 million or 89.0% during the quarter ended March 31, 2021 as compared to the prior year period.  The decrease is primarily due to $1.6 million in insurance/litigation settlement proceeds received during 2020 that did not occur in 2021.

Other expenses increased approximately $1.6 million or 62.3% for the quarter ended March 31, 2021 as compared to the prior year period, primarily due to a $2.2 million construction defect reserve being recorded in the current period, partially offset by a decrease in advocacy contributions.  

Interest expense, including amortization of deferred financing costs, decreased approximately $18.1 million or 20.6% for the quarter ended March 31, 2021 as compared to the prior year period.  The decrease is primarily due to lower overall debt balances outstanding as compared to the prior year period, as well as lower overall interest rates.  The effective interest cost on all indebtedness, excluding debt extinguishment costs/prepayment penalties, for the quarter ended March 31, 2021 was 3.60% as compared to 3.95% for the prior year period.  The Company capitalized interest of approximately $3.8 million and $1.8 million during the quarters ended March 31, 2021 and 2020, respectively.  The Company anticipates that interest expense, excluding debt extinguishment costs/prepayment penalties, will approximate $270.0 million to $276.5 million and capitalized interest will approximate $14.5 million to $16.5 million for the year ending December 31, 2021.

Net (income) loss attributable to Noncontrolling Interests in partially owned properties increased approximately $11.8 million during the quarter ended March 31, 2021 as compared to the prior year period, primarily as a result of noncontrolling interest allocations related to the sale of one partially owned apartment property in 2020 as compared to no sales in the same period in 2021.

Liquidity and Capital Resources

With approximately $2.0 billion in readily available liquidity, limited near-term maturities, very strong credit metrics and ample access to capital markets at low rates, the Company believes it is well positioned to meet its future obligations.  See further discussion below.

Short-Term Liquidity and Cash Proceeds

The Company generally expects to meet its short-term liquidity requirements, including capital expenditures related to maintaining its existing properties and scheduled unsecured note and mortgage note repayments, through its working capital, net cash provided by operating activities and borrowings under the Company’s revolving credit facility and commercial paper program.  Currently, the Company considers its cash provided by operating activities to be adequate to meet operating requirements and payments of distributions.

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The following table presents the Company’s balances for cash and cash equivalents, restricted deposits and the available borrowing capacity on its revolving credit facility as of March 31, 2021 and December 31, 2020 (amounts in thousands): 

	March 31, 2021		December 31, 2020
Cash and cash equivalents	$	35,453	$	42,591
Restricted deposits	$	62,383	$	57,137
Unsecured revolving credit facility availability	$	1,969,301	$	1,984,051

During the quarter ended March 31, 2021, the Company generated proceeds from various transactions, which included the following:

• Obtained $28.5 million in 3.58% fixed rate mortgage debt maturing on March 1, 2031; and

• Issued Common Shares related to share option exercises and ESPP purchases and received net proceeds of $24.6 million, which were contributed to the capital of the Operating Partnership in exchange for additional OP Units (on a one-for-one Common Share per OP Unit basis).

During the quarter ended March 31, 2021, the above proceeds along with net cash flow from operations and borrowings from the Company’s revolving line of credit and commercial paper program were primarily utilized to:

• Invest $64.6 million primarily in development projects; and

• Repay $61.8 million of mortgage loans (inclusive of scheduled principal repayments).

Credit Facility and Commercial Paper Program

The Company has a $2.5 billion unsecured revolving credit facility maturing November 1, 2024.  The Company has the ability to increase available borrowings by an additional $750.0 million by adding lenders to the facility, obtaining the agreement of existing lenders to increase their commitments or incurring one or more term loans.  The interest rate on advances under the facility will generally be LIBOR plus a spread (currently 0.775%), or based on bids received from the lending group, and the Company pays an annual facility fee (currently 0.125%).  Both the spread and the facility fee are dependent on the Company’s senior unsecured credit rating.

The unsecured revolving credit agreement contains provisions that establish a process for entering into an amendment to replace LIBOR under certain circumstances, such as the anticipated phase-out of LIBOR by the end of 2021. At this time, it cannot be determined with certainty what interest rate(s) may succeed LIBOR, if any, and how any successor or alternative rates for LIBOR may affect borrowing costs or the availability of variable interest rate borrowings.

The Company may borrow up to a maximum of $1.0 billion under its commercial paper program subject to market conditions.  The notes will be sold under customary terms in the United States commercial paper note market and will rank pari passu with all of the Company’s other unsecured senior indebtedness.

The Company limits its utilization of the revolving credit facility in order to maintain liquidity to support its $1.0 billion commercial paper program along with certain other obligations.  The following table presents the availability on the Company’s unsecured revolving credit facility as of April 26, 2021 (amounts in thousands):

	April 26, 2021
Unsecured revolving credit facility commitment	$	2,500,000
Commercial paper balance outstanding		(800,000	)
Unsecured revolving credit facility balance outstanding		—
Other restricted amounts		(100,699	)
Unsecured revolving credit facility availability	$	1,599,301

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Dividend Policy

The Company determines its dividends/distributions based on actual and projected financial conditions, the Company’s actual and projected liquidity and operating results, the Company’s projected cash needs for capital expenditures and other investment activities and such other factors as the Company’s Board of Trustees deems relevant.  The Company declared a dividend/distribution for the first quarter of 2021 of $0.6025 per share/unit, consistent with the amount paid in 2020.  All future dividends/distributions remain subject to the discretion of the Company’s Board of Trustees.

Total dividends/distributions paid in April 2021 amounted to $232.7 million (excluding distributions on Partially Owned Properties), which consisted of certain distributions declared during the quarter ended March 31, 2021.

Long-Term Financing and Capital Needs

The Company expects to meet its long-term liquidity requirements, such as lump sum unsecured note and mortgage debt maturities, property acquisitions and financing of development activities, through the issuance of secured and unsecured debt and equity securities (including additional OP Units), proceeds received from the disposition of certain properties and joint ventures, along with cash generated from operations after all distributions.  The Company has a significant number of unencumbered properties available to secure additional mortgage borrowings should unsecured capital be unavailable or the cost of alternative sources of capital be too high.  The value of and cash flow from these unencumbered properties are in excess of the requirements the Company must maintain in order to comply with covenants under its unsecured notes and line of credit.  Of the $27.3 billion in investment in real estate on the Company’s balance sheet at March 31, 2021, $23.3 billion or 85.5% was unencumbered.  However, there can be no assurances that these sources of capital will be available to the Company in the future on acceptable terms or otherwise.

EQR issues equity and guarantees certain debt of the Operating Partnership from time to time.  EQR does not have any indebtedness as all debt is incurred by the Operating Partnership.

The Company’s total debt summary and debt maturity schedules as of March 31, 2021 are as follows:

Debt Summary as of March 31, 2021

($ in thousands)

									Weighted
						Weighted			Average
	Debt					Average			Maturities
	Balances		% of Total			Rates			(years)
Secured	$	2,270,700		28.3	%		3.18	%		6.1
Unsecured		5,766,856		71.7	%		3.49	%		10.0
Total	$	8,037,556		100.0	%		3.40	%		8.9
Fixed Rate Debt:
Secured – Conventional	$	1,899,917		23.7	%		3.70	%		4.7
Unsecured – Public		5,337,103		66.4	%		3.77	%		10.8
Fixed Rate Debt		7,237,020		90.1	%		3.75	%		9.1
Floating Rate Debt:
Secured – Conventional		40,546		0.5	%		2.38	%		1.2
Secured – Tax Exempt		330,237		4.1	%		0.45	%		15.4
Unsecured – Revolving Credit Facility		—		—			—			3.6
Unsecured – Commercial Paper Program		429,753		5.3	%		0.30	%		—
Floating Rate Debt		800,536		9.9	%		0.45	%		6.7
Total	$	8,037,556		100.0	%		3.40	%		8.9

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Debt Maturity Schedule as of March 31, 2021

($ in thousands)

Year	Fixed Rate			Floating Rate				Total			% of Total			Weighted Average Coupons on Fixed Rate Debt			Weighted Average Coupons on Total Debt
2021	$	5,593		$	430,000		(1)	$	435,593			5.4	%		3.27	%		0.32	%
2022		264,185			40,846				305,031			3.8	%		3.25	%		3.12	%
2023		1,325,588			3,500				1,329,088			16.4	%		3.74	%		3.73	%
2024		—			6,100				6,100			0.1	%	N/A				0.06	%
2025		450,000			8,200				458,200			5.6	%		3.38	%		3.32	%
2026		592,025			9,000				601,025			7.4	%		3.58	%		3.53	%
2027		400,000			9,800				409,800			5.0	%		3.25	%		3.17	%
2028		900,000			10,700				910,700			11.2	%		3.79	%		3.75	%
2029		888,120			11,500				899,620			11.1	%		3.30	%		3.26	%
2030		1,095,000			12,600				1,107,600			13.6	%		2.55	%		2.52	%
2031+		1,379,350			275,535				1,654,885			20.4	%		4.37	%		3.66	%
Subtotal		7,299,861			817,781				8,117,642			100.0	%		3.55	%		3.23	%
Deferred Financing Costs and    Unamortized (Discount)		(62,841	)		(17,245	)			(80,086	)	N/A			N/A			N/A
Total	$	7,237,020		$	800,536			$	8,037,556			100.0	%		3.55	%		3.23	%

(1) Represents principal outstanding on the Company’s commercial paper program.

See Note 9 in the Notes to Consolidated Financial Statements for additional discussion of debt at March 31, 2021.

ERPOP’s long-term senior debt ratings and short-term commercial paper ratings, as well as EQR’s long-term preferred equity ratings, have been reaffirmed during the COVID-19 pandemic by all three rating agencies listed below and all continue to maintain a stable outlook.  As of April 26, 2021, the ratings are as follows:

	Standard & Poor’s	Moody’s	Fitch
ERPOP’s long-term senior debt rating	A-	A3	A
ERPOP’s short-term commercial paper rating	A-2	P-2	F-1
EQR’s long-term preferred equity rating	BBB	Baa1	BBB+

See Note 14 in the Notes to Consolidated Financial Statements for discussion of the events, if any, which occurred subsequent to March 31, 2021.

Debt Covenants

The Company’s unsecured debt includes certain financial and operating covenants including, among other things, maintenance of certain financial ratios.  These provisions are contained in the indentures applicable to each note payable or the credit agreement for our line of credit.  The Company was in compliance with its unsecured debt covenants for all periods presented. The following table presents the Company’s selected unsecured public debt covenants as of March 31, 2021 and December 31, 2020:

	March 31, 2021		December 31, 2020
Debt to Adjusted Total Assets (not to exceed 60%)	30.4%		30.5%
Secured Debt to Adjusted Total Assets (not to exceed 40%)	9.4%		9.6%
Consolidated Income Available for Debt Service to    Maximum Annual Service Charges    (must be at least 1.5 to 1)		5.30	5.42
Total Unencumbered Assets to Unsecured Debt    (must be at least 125%)	454.1%		458.3%

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Note: These selected covenants represent the most restrictive financial covenants relating to ERPOP’s outstanding public debt securities and are defined in the indenture relating to such securities.  The Company maintains substantial additional borrowing capacity and, as reflected by the above selected covenant information, believes it could currently incur substantial additional debt before it would breach any of its debt covenants.

Capitalization of Fixed Assets and Improvements to Real Estate

The Company’s and the Operating Partnership’s capital expenditures policy has not changed from the information included in the Company’s and the Operating Partnership’s Annual Report on Form 10-K for the year ended December 31, 2020.

For the quarter ended March 31, 2021, our actual capital expenditures to real estate included the following (amounts in thousands except for apartment unit and per apartment unit amounts):

Capital Expenditures to Real Estate

For the Quarter Ended March 31, 2021

	Same Store Properties (4)		Non-Same Store Properties/Other (5)		Total		Same Store Avg. Per Apartment Unit
Total Apartment Units		77,060		829		77,889
Building Improvements (1)	$	15,976	$	38	$	16,014	$	207
Renovation Expenditures (2)		5,261		—		5,261		68
Replacements (3)		7,381		23		7,404		96
Total Capital Expenditures to Real Estate	$	28,618	$	61	$	28,679	$	371

(1) Building Improvements – Includes roof replacement, paving, building mechanical equipment systems, exterior siding and painting, major landscaping, furniture, fixtures and equipment for amenities and common areas, vehicles and office and maintenance equipment.

(2) Renovation Expenditures – Apartment unit renovation costs (primarily kitchens and baths) designed to reposition these units for higher rental levels in their respective markets.  Amounts for 222 same store apartment units approximated $23,701 per apartment unit renovated.  

(3) Replacements – Includes appliances, mechanical equipment, fixtures and flooring (including hardwood and carpeting).

(4) Same Store Properties – Primarily includes all properties acquired or completed that are stabilized prior to January 1, 2020, less properties subsequently sold.

(5) Non-Same Store Properties/Other – Primarily includes all properties acquired during 2020 and 2021, plus any properties in lease-up and not stabilized as of January 1, 2020.  Also includes capital expenditures for properties sold.

The Company estimates that during 2021 it will spend approximately $1,950 per same store apartment unit or $150.0 million of total capital expenditures to real estate for same store properties.  Included in these total expected expenditures are approximately $25.0 million for apartment unit renovation expenditures on approximately 1,250 same store apartment units at an average cost of approximately $20,000 per apartment unit renovated.  The anticipated total capital expenditures to real estate for same store properties represent a higher absolute and per unit dollar amount as compared to 2020 but a lower absolute and per unit dollar amount as compared to 2019, as the Company anticipates slowly returning its capital expenditure activity to more normalized pre-COVID-19 levels.

During the quarter ended March 31, 2021, the Company’s total non-real estate capital additions, such as computer software, computer equipment, and furniture and fixtures and leasehold improvements to the Company’s property management offices and its corporate offices, were approximately $0.6 million.  The Company expects to fund approximately $1.5 million in total non-real estate capital additions for the remainder of 2021. These quarter-to-date and anticipated fundings are significantly lower than in 2020 primarily due to corporate office renovations completed during 2020.

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Derivative Instruments

In the normal course of business, the Company is exposed to the effect of interest rate changes.  The Company may seek to manage these risks by following established risk management policies and procedures including the use of derivatives to hedge interest rate risk on debt instruments.  The Company may also use derivatives to manage commodity prices in the daily operations of the business.

The Company has a policy of only entering into derivative contracts with major financial institutions based upon their credit ratings and other factors.  When viewed in conjunction with the underlying and offsetting exposure that the derivatives are designed to hedge, the Company has not sustained a material loss from these instruments nor does it anticipate any material adverse effect on its net income or financial position in the future from the use of derivatives it currently has in place.

See Note 10 in the Notes to Consolidated Financial Statements for additional discussion of derivative instruments at March 31, 2021.

Definitions

The definition of certain terms described above or below are as follows:

• Acquisition Cap Rate – NOI that the Company anticipates receiving in the next 12 months (or the year two or three stabilized NOI for properties that are in lease-up at acquisition) less an estimate of property management costs/management fees allocated to the project (generally ranging from 2.0% to 4.0% of revenues depending on the size and income streams of the asset) and less an estimate for in-the-unit replacement capital expenditures (generally ranging from $100-$450 per apartment unit depending on the age and condition of the asset) divided by the gross purchase price of the asset.  The weighted average Acquisition Cap Rate for acquired properties is weighted based on the projected NOI streams and the relative purchase price for each respective property.

• Average Rental Rate – Total Residential rental revenues reflected on a straight-line basis in accordance with GAAP divided by the weighted average occupied apartment units for the reporting period presented.

• Blended Rate – The weighted average of New Lease Change and Renewal Rate Achieved.

• Development Yield – NOI that the Company anticipates receiving in the next 12 months following stabilization less an estimate of property management costs/management fees allocated to the project (generally ranging from 2.0% to 4.0% of revenues depending on the size and income streams of the asset) and less an estimate for in-the-unit replacement capital expenditures (generally ranging from $50-$150 per apartment unit depending on the type of asset) divided by the Total Budgeted Capital Cost of the asset. The weighted average Development Yield for development properties is weighted based on the projected NOI streams and the relative Total Budgeted Capital Cost for each respective property.

• Disposition Yield – NOI that the Company anticipates giving up in the next 12 months less an estimate of property management costs/management fees allocated to the project (generally ranging from 2.0% to 4.0% of revenues depending on the size and income streams of the asset) and less an estimate for in-the-unit replacement capital expenditures (generally ranging from $100-$450 per apartment unit depending on the age and condition of the asset) divided by the gross sales price of the asset.  The weighted average Disposition Yield for sold properties is weighted based on the projected NOI streams and the relative sales price for each respective property.

• Leasing Concessions – Reflects upfront discounts on both new move-in and renewal leases on a straight-line basis.

• New Lease Change – The net effective change in rent (inclusive of Leasing Concessions) for a lease with a new or transferring resident compared to the rent for the prior lease of the identical apartment unit, regardless of lease term.

• Non-Residential – Consists of revenues and expenses from retail and public parking garage operations.

• Percentage of Residents Renewing – Leases renewed expressed as a percentage of total renewal offers extended during the reporting period.

• Physical Occupancy – The weighted average occupied apartment units for the reporting period divided by the average of total apartment units available for rent for the reporting period.

• Renewal Rate Achieved – The net effective change in rent (inclusive of Leasing Concessions) for a new lease on an apartment unit where the lease has been renewed as compared to the rent for the prior lease of the identical apartment unit, regardless of lease term.

48

• Residential – Consists of multifamily apartment revenues and expenses.

• Same Store Residential Revenues – Revenues from our same store properties presented on a GAAP basis which reflects the impact of Leasing Concessions on a straight-line basis.

• % of Stabilized Budgeted NOI – Represents original budgeted 2021 NOI for stabilized properties and projected annual NOI at stabilization (defined as having achieved 90% occupancy for three consecutive months) for properties that are in lease-up.

• Traffic – Consists of an expression of interest in an apartment by completing an in-person tour, self-guided tour or virtual tour that may result in an application to lease.

• Turnover – Total Residential move-outs (including inter-property and intra-property transfers) divided by total Residential apartment units.

• Unlevered Internal Rate of Return (“IRR”) – The Unlevered IRR on sold properties is the compound annual rate of return calculated by the Company based on the timing and amount of: (i) the gross purchase price of the property plus any direct acquisition costs incurred by the Company; (ii) total revenues earned during the Company’s ownership period; (iii) total direct property operating expenses (including real estate taxes and insurance) incurred during the Company’s ownership period; (iv) capital expenditures incurred during the Company’s ownership period; and (v) the gross sales price of the property net of selling costs.  

• Weighted Average Coupons – Contractual interest rate for each debt instrument weighted by principal balances as of March 31, 2021. In case of debt for which fair value hedges are in place, the rate payable under the corresponding derivatives is used in lieu of the contractual interest rate.

• Weighted Average Rates – Interest expense for each debt instrument for the quarter ended March 31, 2021 weighted by its average principal balance for the same period. Interest expense includes amortization of premiums, discounts and other comprehensive income on debt and related derivative instruments. In case of debt for which derivatives are in place, the income or expense recognized under the corresponding derivatives is included in the total interest expense for the period.

Off-Balance Sheet Arrangements and Contractual Obligations

The Company has various unconsolidated interests in certain joint ventures.  The Company does not believe that these unconsolidated investments have a materially different impact on its liquidity, cash flows, capital resources, credit or market risk than its consolidated operating and/or other activities.  See also Note 6 in the Notes to Consolidated Financial Statements for additional discussion regarding the Company’s investments in partially owned entities.  See also Note 12 in the Notes to Consolidated Financial Statements for discussion regarding the Company’s development projects.

The Company’s contractual obligations for the next five years and thereafter have not changed materially from the amounts and disclosures included in the Company’s and the Operating Partnership’s Annual Report on Form 10-K for the year ended December 31, 2020.  See the updated debt maturity schedule included in Liquidity and Capital Resources for further discussion.

Critical Accounting Policies and Estimates

The Company’s and the Operating Partnership’s critical accounting policies and estimates have not changed from the information included in the Company’s and the Operating Partnership’s Annual Report on Form 10-K for the year ended December 31, 2020.

49

Funds From Operations and Normalized Funds From Operations

The following is the Company’s and the Operating Partnership’s reconciliation of net income to FFO available to Common Shares and Units / Units and Normalized FFO available to Common Shares and Units / Units for the quarters ended March 31, 2021 and 2020:

Funds From Operations and Normalized Funds From Operations

(Amounts in thousands)

	Quarter Ended March 31,
	2021			2020
Net income	$	60,364		$	332,671
Net (income) loss attributable to Noncontrolling Interests – Partially Owned Properties		(682	)		(12,530	)
Preferred/preference distributions		(773	)		(773	)
Net income available to Common Shares and Units / Units		58,909			319,368
Adjustments:
Depreciation		199,962			212,422
Depreciation – Non-real estate additions		(1,100	)		(1,287	)
Depreciation – Partially Owned Properties		(828	)		(856	)
Depreciation – Unconsolidated Properties		617			613
Net (gain) loss on sales of unconsolidated entities - operating assets		(4	)		—
Net (gain) loss on sales of real estate properties		43			(207,977	)
Noncontrolling Interests share of gain (loss) on sales of real estate properties		—			11,655
FFO available to Common Shares and Units / Units (1) (3) (4)		257,599			333,938
Adjustments:
Impairment – non-operating assets		—			—
Write-off of pursuit costs		1,331			1,627
Debt extinguishment and preferred share redemption (gains) losses		264			—
Non-operating asset (gains) losses		854			441
Other miscellaneous items		2,242			(918	)
Normalized FFO available to Common Shares and Units / Units (2) (3) (4)	$	262,290		$	335,088
FFO (1) (3)	$	258,372		$	334,711
Preferred/preference distributions		(773	)		(773	)
FFO available to Common Shares and Units / Units (1) (3) (4)	$	257,599		$	333,938
Normalized FFO (2) (3)	$	263,063		$	335,861
Preferred/preference distributions		(773	)		(773	)
Normalized FFO available to Common Shares and Units / Units (2) (3) (4)	$	262,290		$	335,088

(1) The National Association of Real Estate Investment Trusts (“Nareit”) defines funds from operations (“FFO”) (December 2018 White Paper) as net income (computed in accordance with accounting principles generally accepted in the United States (“GAAP”)), excluding gains or losses from sales and impairment write-downs of depreciable real estate and land when connected to the main business of a REIT, impairment write-downs of investments in entities when the impairment is directly attributable to decreases in the value of depreciable real estate held by the entity and depreciation and amortization related to real estate.  Adjustments for partially owned consolidated and unconsolidated partnerships and joint ventures are calculated to reflect funds from operations on the same basis.  

(2) Normalized funds from operations (“Normalized FFO”) begins with FFO and excludes:

• the impact of any expenses relating to non-operating asset impairment;

• pursuit cost write-offs;

• gains and losses from early debt extinguishment and preferred share redemptions;

• gains and losses from non-operating assets; and

• other miscellaneous items.

50

(3) The Company believes that FFO and FFO available to Common Shares and Units / Units are helpful to investors as supplemental measures of the operating performance of a real estate company, because they are recognized measures of performance by the real estate industry and by excluding gains or losses from sales and impairment write-downs of depreciable real estate and excluding depreciation related to real estate (which can vary among owners of identical assets in similar condition based on historical cost accounting and useful life estimates), FFO and FFO available to Common Shares and Units / Units can help compare the operating performance of a company’s real estate between periods or as compared to different companies.  The Company also believes that Normalized FFO and Normalized FFO available to Common Shares and Units / Units are helpful to investors as supplemental measures of the operating performance of a real estate company because they allow investors to compare the Company’s operating performance to its performance in prior reporting periods and to the operating performance of other real estate companies without the effect of items that by their nature are not comparable from period to period and tend to obscure the Company’s actual operating results.  FFO, FFO available to Common Shares and Units / Units, Normalized FFO and Normalized FFO available to Common Shares and Units / Units do not represent net income, net income available to Common Shares / Units or net cash flows from operating activities in accordance with GAAP.  Therefore, FFO, FFO available to Common Shares and Units / Units, Normalized FFO and Normalized FFO available to Common Shares and Units / Units should not be exclusively considered as alternatives to net income, net income available to Common Shares / Units or net cash flows from operating activities as determined by GAAP or as a measure of liquidity.  The Company’s calculation of FFO, FFO available to Common Shares and Units / Units, Normalized FFO and Normalized FFO available to Common Shares and Units / Units may differ from other real estate companies due to, among other items, variations in cost capitalization policies for capital expenditures and, accordingly, may not be comparable to such other real estate companies.  

(4) FFO available to Common Shares and Units / Units and Normalized FFO available to Common Shares and Units / Units are calculated on a basis consistent with net income available to Common Shares / Units and reflects adjustments to net income for preferred distributions and premiums on redemption of preferred shares/preference units in accordance with GAAP.  The equity positions of various individuals and entities that contributed their properties to the Operating Partnership in exchange for OP Units are collectively referred to as the “Noncontrolling Interests – Operating Partnership”.  Subject to certain restrictions, the Noncontrolling Interests – Operating Partnership may exchange their OP Units for Common Shares on a one-for-one basis.

Item 3.  Quantitative and Qualitative Disclosures About Market Risk

The Company’s and the Operating Partnership’s market risk has not changed materially from the amounts and information reported in Part II, Item 7A, Quantitative and Qualitative Disclosures About Market Risk, to the Company’s and the Operating Partnership’s Annual Report on Form 10-K for the year ended December 31, 2020.  See Note 10 in the Notes to Consolidated Financial Statements for additional discussion of derivative and other fair value instruments.

Item 4.  Controls and Procedures

Equity Residential

(a) Evaluation of Disclosure Controls and Procedures:

Effective as of March 31, 2021, the Company carried out an evaluation, under the supervision and with the participation of the Company’s management, including the Chief Executive Officer and Chief Financial Officer, of the effectiveness of the Company’s disclosure controls and procedures pursuant to Exchange Act Rules 13a-15 and 15d-15.  Based on that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that the disclosure controls and procedures are effective to ensure that information required to be disclosed by the Company in its Exchange Act filings is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms.

(b) Changes in Internal Control over Financial Reporting:

There were no changes to the internal control over financial reporting of the Company identified in connection with the Company’s evaluation referred to above that occurred during the first quarter of 2021 that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

ERP Operating Limited Partnership

(a) Evaluation of Disclosure Controls and Procedures:

Effective as of March 31, 2021, the Operating Partnership carried out an evaluation, under the supervision and with the participation of the Operating Partnership’s management, including the Chief Executive Officer and Chief Financial Officer of EQR, of the effectiveness of the Operating Partnership’s disclosure controls and procedures pursuant to Exchange Act Rules 13a-15 and 15d-15.  Based on that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that the disclosure controls and procedures are effective to ensure that information required to be disclosed by the Operating Partnership in its Exchange Act filings is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms.

51

(b) Changes in Internal Control over Financial Reporting:

There were no changes to the internal control over financial reporting of the Operating Partnership identified in connection with the Operating Partnership’s evaluation referred to above that occurred during the first quarter of 2021 that have materially affected, or are reasonably likely to materially affect, the Operating Partnership’s internal control over financial reporting.

PART II.  OTHER INFORMATION

Item 1.  Legal Proceedings

As of March 31, 2021, the Company does not believe there is any litigation pending or threatened against it that, individually or in the aggregate, may reasonably be expected to have a material adverse effect on the Company.

Item 1A.  Risk Factors

There have been no material changes to the risk factors that were discussed in Part I, Item 1A of the Company’s and the Operating Partnership’s Annual Report on Form 10-K for the year ended December 31, 2020.

Item 2.  Unregistered Sales of Equity Securities and Use of Proceeds

None.

Item 3.  Defaults Upon Senior Securities

None.

Item 4.  Mine Safety Disclosures

Not applicable.

Item 5.  Other Information

None.

Item 6.  Exhibits – See the Exhibit Index.

52

EXHIBIT INDEX

The exhibits listed below are filed as part of this report.  References to exhibits or other filings under the caption “Location” indicate that the exhibit or other filing has been filed, that the indexed exhibit and the exhibit referred to are the same and that the exhibit referred to is incorporated by reference.  The Commission file numbers for our Exchange Act filings referenced below are 1-12252 (Equity Residential) and 0-24920 (ERP Operating Limited Partnership).

Exhibit	Description	Location
10.1	Seventh Amended and Restated Agreement of Limited Partnership for ERP Operating Limited Partnership, dated as of March 18, 2021 and effective as of January 1, 2020.	Included as Exhibit 10.1 to Equity Residential's and ERP Operating Limited Partnership's Form 8-K dated March 18, 2021, filed on March 24, 2021.
31.1	Equity Residential – Certification of Mark J. Parrell, Chief Executive Officer.	Attached herein.
31.2	Equity Residential – Certification of Robert A. Garechana, Chief Financial Officer.	Attached herein.
31.3	ERP Operating Limited Partnership – Certification of Mark J. Parrell, Chief Executive Officer of Registrant’s General Partner.	Attached herein.
31.4	ERP Operating Limited Partnership – Certification of Robert A. Garechana, Chief Financial Officer of Registrant’s General Partner.	Attached herein.
32.1	Equity Residential – Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, of Mark J. Parrell, Chief Executive Officer of the Company.	Attached herein.
32.2	Equity Residential – Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, of Robert A. Garechana, Chief Financial Officer of the Company.	Attached herein.
32.3	ERP Operating Limited Partnership – Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, of Mark J. Parrell, Chief Executive Officer of Registrant’s General Partner.	Attached herein.
32.4	ERP Operating Limited Partnership – Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, of Robert A. Garechana, Chief Financial Officer of Registrant’s General Partner.	Attached herein.
101.INS	Inline XBRL Instance Document – the instance document does not appear in the Interactive Data File because XBRL tags are embedded within the Inline XBRL document.
101.SCH	Inline XBRL Taxonomy Extension Schema Document.
101.CAL	Inline XBRL Taxonomy Extension Calculation Linkbase Document.
101.DEF	Inline XBRL Taxonomy Extension Definition Linkbase Document.
101.LAB	Inline XBRL Taxonomy Extension Label Linkbase Document.
101.PRE	Inline XBRL Taxonomy Extension Presentation Linkbase Document.
104	Cover Page Interactive Data File (embedded within the Inline XBRL document).

53

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, each registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

		EQUITY RESIDENTIAL
Date:	April 30, 2021	By:	/s/ Robert A. Garechana
			Robert A. Garechana
			Executive Vice President and Chief Financial Officer
			(Principal Financial Officer)
Date:	April 30, 2021	By:	/s/ Ian S. Kaufman
			Ian S. Kaufman
			Senior Vice President and Chief Accounting Officer
			(Principal Accounting Officer)

		ERP OPERATING LIMITED PARTNERSHIP BY: EQUITY RESIDENTIAL ITS GENERAL PARTNER
Date:	April 30, 2021	By:	/s/ Robert A. Garechana
			Robert A. Garechana
			Executive Vice President and Chief Financial Officer
			(Principal Financial Officer)
Date:	April 30, 2021	By:	/s/ Ian S. Kaufman
			Ian S. Kaufman
			Senior Vice President and Chief Accounting Officer
			(Principal Accounting Officer)

EX-31.1

Exhibit 31.1

Equity Residential

CERTIFICATIONS

I, Mark J. Parrell, certify that:

1. I have reviewed this quarterly report on Form 10-Q of EquityResidential;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessarytomakethestatementsmade,inlightofthecircumstancesunderwhichsuchstatementsweremade,notmisleading with respect to the period covered by thisreport;

3. Basedonmyknowledge,thefinancialstatements,andotherfinancialinformationincludedinthisreport,fairlypresentinall material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in thisreport;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant andhave:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalentfunctions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: April 30, 2021

/s/ Mark J. Parrell

    Mark J. Parrell

    Chief Executive Officer

EX-31.2

Exhibit 31.2

Equity Residential

CERTIFICATIONS

I, Robert A. Garechana, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Equity Residential;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessarytomakethestatementsmade,inlightofthecircumstancesunderwhichsuchstatementsweremade,notmisleading with respect to the period covered by thisreport;

3. Basedonmyknowledge,thefinancialstatements,andotherfinancialinformationincludedinthisreport,fairlypresentinall material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in thisreport;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: April 30, 2021

/s/ Robert A. Garechana

    Robert A. Garechana

    Chief Financial Officer

EX-31.3

Exhibit 31.3

ERP Operating Limited Partnership

CERTIFICATIONS

I, Mark J. Parrell, certify that:

1. I have reviewed this quarterly report on Form 10-Q of ERP Operating Limited Partnership;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Basedonmyknowledge,thefinancialstatements,andotherfinancialinformationincludedinthisreport,fairlypresentinall material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in thisreport;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: April 30, 2021

/s/ Mark J. Parrell

    Mark J. Parrell

    Chief Executive Officer of Registrant’s General Partner

EX-31.4

Exhibit 31.4

ERP Operating Limited Partnership

CERTIFICATIONS

I, Robert A. Garechana, certify that:

1. I have reviewed this quarterly report on Form 10-Q of ERP Operating Limited Partnership;

2. Basedonmyknowledge,thisreportdoesnotcontainanyuntruestatementofamaterialfactoromittostateamaterial factnecessarytomakethestatementsmade,inlightofthecircumstancesunderwhichsuchstatementsweremade,not misleading with respect to the period covered by thisreport;

3. Basedonmyknowledge,thefinancialstatements,andotherfinancialinformationincludedinthisreport,fairlypresentinall material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in thisreport;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: April 30, 2021

/s/ Robert A. Garechana

    Robert A. Garechana

    Chief Financial Officer of Registrant’s General Partner

EX-32.1

Exhibit 32.1

Equity Residential

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION906OFTHESARBANES-OXLEYACTOF2002

InconnectionwiththeQuarterlyReportofEquityResidential(the“Company”)onForm10-QfortheperiodendingMarch 31, 2021 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Mark J. Parrell, Chief ExecutiveOfficeroftheCompany,certify,pursuantto18U.S.C.§1350,asadoptedpursuantto§906oftheSarbanes-OxleyAct of 2002, that, to the best of myknowledge:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Mark J. Parrell

Mark J.Parrell

Chief Executive Officer

April 30, 2021

EX-32.2

Exhibit 32.2

Equity Residential

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION906OFTHESARBANES-OXLEYACTOF2002

InconnectionwiththeQuarterlyReportofEquityResidential(the“Company”)onForm10-QfortheperiodendingMarch 31, 2021 as filed with the Securities and Exchange Commission on the date hereof (the “Report”),I, Robert A. Garechana,ChiefFinancial OfficeroftheCompany,certify,pursuantto18U.S.C.§1350,asadoptedpursuantto§906oftheSarbanes-OxleyActof2002, that, to the best of myknowledge:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Robert A. Garechana

Robert A. Garechana

Chief Financial Officer

April 30, 2021

EX-32.3

Exhibit 32.3

ERP Operating Limited Partnership

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION906OFTHESARBANES-OXLEYACTOF2002

In connection with the Quarterly Report of ERP Operating Limited Partnership (the “Operating Partnership”) on Form 10-QfortheperiodendingMarch 31,2021asfiledwiththeSecuritiesandExchangeCommissiononthedatehereof(the“Report”), I,MarkJ.Parrell,ChiefExecutiveOfficerofEquityResidential,generalpartneroftheOperatingPartnership,certify,pursuant to18U.S.C.§1350,asadoptedpursuantto§906oftheSarbanes-OxleyActof2002,that,tothebestofmyknowledge:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the OperatingPartnership.

/s/ Mark J. Parrell

Mark J. Parrell

Chief Executive Officer

of Registrant’s General Partner  

April 30, 2021

EX-32.4

Exhibit 32.4

ERP Operating Limited Partnership

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION906OFTHESARBANES-OXLEYACTOF2002

In connection with the Quarterly Report of ERP Operating Limited Partnership (the “Operating Partnership”) on Form 10-QfortheperiodendingMarch 31,2021asfiledwiththeSecuritiesandExchangeCommissiononthedatehereof(the“Report”), I,Robert A. Garechana, ChiefFinancialOfficerofEquityResidential,generalpartneroftheOperatingPartnership,certify,pursuantto 18U.S.C.§1350,asadoptedpursuantto§906oftheSarbanes-OxleyActof2002,that,tothebestofmyknowledge:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the OperatingPartnership.

/s/ Robert A. Garechana

Robert A. Garechana

Chief Financial Officer

of Registrant’s General Partner

April 30, 2021

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Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2021	Apr. 26, 2021
Document Information [Line Items]
Entity Registrant Name	EQUITY RESIDENTIAL
Entity Central Index Key	0000906107
Document Type	10-Q
Document Period End Date	Mar. 31, 2021
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Trading Symbol	EQR
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		374,005,379
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity File Number	1-12252
Entity Tax Identification Number	13-3675988
Entity Address, Address Line One	Two North Riverside Plaza
Entity Address, City or Town	Chicago
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60606
City Area Code	312
Local Phone Number	474-1300
Entity Incorporation, State or Country Code	MD
Title of 12(b) Security	Common Shares of Beneficial Interest,$0.01 Par Value (Equity Residential)
Security Exchange Name	NYSE
Document Quarterly Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
ERPOP [Member]
Document Information [Line Items]
Entity Registrant Name	ERP OPERATING LIMITED PARTNERSHIP
Entity Central Index Key	0000931182
Document Type	10-Q
Document Period End Date	Mar. 31, 2021
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
No Trading Symbol Flag	true
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity File Number	0-24920
Entity Tax Identification Number	36-3894853
Entity Address, Address Line One	Two North Riverside Plaza
Entity Address, City or Town	Chicago
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60606
City Area Code	312
Local Phone Number	474-1300
Entity Incorporation, State or Country Code	IL
Title of 12(b) Security	7.57% Notes due August 15, 2026(ERP Operating Limited Partnership)
Security Exchange Name	NYSE
Document Quarterly Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes

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CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
ASSETS
Land	$ 5,785,367	$ 5,785,367
Depreciable property	20,952,067	20,920,654
Projects under development	476,010	411,134
Land held for development	88,360	86,170
Investment in real estate	27,301,804	27,203,325
Accumulated depreciation	(8,059,619)	(7,859,657)
Investment in real estate, net	19,242,185	19,343,668
Investments in unconsolidated entities	53,274	52,782
Cash and cash equivalents	35,453	42,591
Restricted deposits	62,383	57,137
Right-of-use assets	484,999	499,287
Other assets	290,721	291,426
Total assets	20,169,015	20,286,891
Liabilities:
Mortgage notes payable, net	2,270,700	2,293,890
Notes, net	5,337,103	5,335,536
Line of credit and commercial paper	429,753	414,830
Accounts payable and accrued expenses	168,028	107,366
Accrued interest payable	55,489	65,896
Lease liabilities	316,838	329,130
Other liabilities	335,664	345,064
Security deposits	60,939	60,480
Distributions payable	232,737	232,262
Total liabilities	9,207,251	9,184,454
Commitments and contingencies
Redeemable Noncontrolling Interests – Operating Partnership	409,523	338,951
Shareholders' equity:
Preferred Shares of beneficial interest, $0.01 par value; 100,000,000 shares authorized; 745,600 shares issued and outstanding as of March 31, 2021 and December 31, 2020	37,280	37,280
Common Shares of beneficial interest, $0.01 par value; 1,000,000,000 shares authorized; 372,917,413 shares issued and outstanding as of March 31, 2021 and 372,302,000 shares issued and outstanding as of December 31, 2020	3,729	3,723
Paid in capital	9,083,346	9,128,599
Retained earnings	1,231,808	1,399,715
Accumulated other comprehensive income (loss)	(41,363)	(43,666)
Total shareholders’ equity	10,314,800	10,525,651
Noncontrolling Interests:
Operating Partnership	234,969	233,162
Partially Owned Properties	2,472	4,673
Total Noncontrolling Interests	237,441	237,835
Total equity	10,552,241	10,763,486
Total liabilities and equity/capital	$ 20,169,015	$ 20,286,891

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CONSOLIDATED BALANCE SHEETS (Parenthetical) (Unaudited) - $ / shares	Mar. 31, 2021	Dec. 31, 2020
Statement Of Financial Position [Abstract]
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	100,000,000	100,000,000
Preferred Stock, Shares Issued	745,600	745,600
Preferred Stock, Shares Outstanding	745,600	745,600
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	1,000,000,000	1,000,000,000
Common Stock, Shares, Issued	372,917,413	372,302,000
Common Stock, Shares, Outstanding	372,917,413	372,302,000

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CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
REVENUES
Rental income	$ 597,602	$ 682,305
EXPENSES
Property and maintenance	117,054	115,816
Real estate taxes and insurance	103,470	97,732
Property management	26,130	27,709
General and administrative	15,383	14,518
Depreciation	199,962	212,422
Total expenses	461,999	468,197
Net gain (loss) on sales of real estate properties	(43)	207,977
Operating income	135,560	422,085
Interest and other income	216	1,960
Other expenses	(4,110)	(2,533)
Interest:
Expense incurred, net	(67,358)	(85,590)
Amortization of deferred financing costs	(2,185)	(2,041)
Income before income and other taxes, income (loss) from investments in unconsolidated entities and net gain (loss) on sales of land parcels	62,123	333,881
Income and other tax (expense) benefit	(153)	(53)
Income (loss) from investments in unconsolidated entities	(1,611)	(1,157)
Net gain (loss) on sales of land parcels	5
Net income	60,364	332,671
Net (income) loss attributable to Noncontrolling Interests:
Operating Partnership	(2,143)	(11,535)
Partially Owned Properties	(682)	(12,530)
Net income attributable to controlling interests	57,539	308,606
Preferred distributions	(773)	(773)
Net income available to Common Shares	$ 56,766	$ 307,833
Earnings per share – basic:
Net income available to Common Shares	$ 0.15	$ 0.83
Weighted average Common Shares outstanding	372,280	371,582
Earnings per share – diluted:
Net income available to Common Shares	$ 0.15	$ 0.83
Weighted average Common Shares outstanding	386,916	386,949

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Comprehensive income:
Net income	$ 60,364	$ 332,671
Other comprehensive income (loss) – derivative instruments:
Unrealized holding gains (losses) arising during the period		(967)
Losses reclassified into earnings from other comprehensive income	2,303	5,634
Other comprehensive income (loss)	2,303	4,667
Comprehensive income	62,667	337,338
Comprehensive (income) attributable to Noncontrolling Interests	(2,909)	(24,234)
Comprehensive income attributable to controlling interests	$ 59,758	$ 313,104

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CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 60,364	$ 332,671
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	199,962	212,422
Amortization of deferred financing costs	2,185	2,041
Amortization of above/below market lease intangibles	(18)	(18)
Amortization of discounts and premiums on debt	1,294	1,276
Amortization of deferred settlements on derivative instruments	2,301	5,631
Amortization of right-of-use assets	2,980	3,007
Write-off of pursuit costs	1,331	1,627
(Income) loss from investments in unconsolidated entities	1,611	1,157
Distributions from unconsolidated entities – return on capital		100
Net (gain) loss on sales of real estate properties	43	(207,977)
Net (gain) loss on sales of land parcels	(5)
Realized/unrealized (gain) loss on derivative instruments		25
Compensation paid with Company Common Shares	8,678	7,844
Other operating activities, net	133	1,805
Changes in assets and liabilities:
(Increase) decrease in other assets	20,746	(18,386)
Increase (decrease) in accounts payable and accrued expenses	59,116	62,573
Increase (decrease) in accrued interest payable	(10,407)	(927)
Increase (decrease) in lease liabilities	(868)	(621)
Increase (decrease) in other liabilities	(3,852)	(20,811)
Increase (decrease) in security deposits	459	(988)
Net cash provided by operating activities	346,053	382,451
CASH FLOWS FROM INVESTING ACTIVITIES:
Investment in real estate – development/other	(64,599)	(52,204)
Capital expenditures to real estate	(28,679)	(38,342)
Non-real estate capital additions	(589)	(4,516)
Interest capitalized for real estate under development	(3,769)	(1,834)
Proceeds from disposition of real estate, net		368,364
Investments in unconsolidated entities	(2,378)	(5,458)
Distributions from unconsolidated entities – return of capital	4
Other investing activities, net	(26,335)	(1)
Net cash provided by (used for) investing activities	(126,345)	266,009
CASH FLOWS FROM FINANCING ACTIVITIES:
Debt financing costs	(318)	(181)
Mortgage notes payable, net:
Proceeds	37,492	78
Lump sum payoffs	(59,880)
Scheduled principal repayments	(1,871)	(1,941)
Line of credit and commercial paper:
Line of credit proceeds		720,000
Line of credit repayments		(740,000)
Commercial paper proceeds	1,184,923	1,905,818
Commercial paper repayments	(1,170,000)	(2,291,000)
Proceeds from (payments on) settlement of derivative instruments		(25)
Finance ground lease principal payments	(116)
Proceeds from Employee Share Purchase Plan (ESPP)	1,731	869
Proceeds from exercise of options	22,882	11,151
Contributions – Noncontrolling Interests – Partially Owned Properties		341
Contributions – Noncontrolling Interests – Operating Partnership		12
Distributions:
Common Shares	(224,308)	(211,239)
Preferred Shares	(773)	(773)
Noncontrolling Interests – Operating Partnership	(8,479)	(8,484)
Noncontrolling Interests – Partially Owned Properties	(2,883)	(9,315)
Net cash provided by (used for) financing activities	(221,600)	(624,689)
Net increase (decrease) in cash and cash equivalents and restricted deposits	(1,892)	23,771
Cash and cash equivalents and restricted deposits, beginning of period	99,728	116,999
Cash and cash equivalents and restricted deposits, end of period	97,836	140,770
Cash and cash equivalents	35,453	82,335
Restricted deposits	62,383	58,435
SUPPLEMENTAL INFORMATION:
Cash paid for interest, net of amounts capitalized	74,058	75,561
Net cash paid (received) for income and other taxes	752	266
Amortization of deferred financing costs:
Investment in real estate, net	(60)	(60)
Other assets	585	584
Mortgage notes payable, net	703	403
Notes, net	957	1,114
Amortization of discounts and premiums on debt:
Mortgage notes payable, net	684	595
Notes, net	610	681
Amortization of deferred settlements on derivative instruments:
Other liabilities	(2)	(3)
Accumulated other comprehensive income	2,303	5,634
Write-off of pursuit costs:
Investment in real estate, net	1,209	1,586
Other assets	114	33
Accounts payable and accrued expenses	8	8
(Income) loss from investments in unconsolidated entities:
Investments in unconsolidated entities	1,282	830
Other liabilities	329	327
Realized/unrealized (gain) loss on derivative instruments:
Other liabilities		992
Accumulated other comprehensive income		(967)
Investments in unconsolidated entities:
Investments in unconsolidated entities	(1,778)	(4,558)
Other liabilities	(600)	(900)
Debt financing costs:
Other assets		$ (181)
Mortgage notes payable, net	(318)
Right-of-use assets and lease liabilities initial measurement and reclassifications:
Right-of-use assets	11,308
Lease liabilities	$ (11,308)

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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Unaudited) - USD ($) $ in Thousands	Total	PREFERRED SHARES	COMMON SHARES, $0.01 PAR VALUE	PAID IN CAPITAL	RETAINED EARNINGS	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	DISTRIBUTIONS	OPERATING PARTNERSHIP	PARTIALLY OWNED PROPERTIES
Balance, beginning of year at Dec. 31, 2019		$ 37,280	$ 3,717	$ 8,965,577	$ 1,386,495	$ (77,563)
Balance, beginning of year at Dec. 31, 2019								$ 227,837	$ 1,183
COMMON SHARES, $0.01 PAR VALUE
Conversion of OP Units into Common Shares				1,844
Exercise of share options			2	11,149
Employee Share Purchase Plan (ESPP)				869
Share-based employee compensation expense:
Issuance of restricted units/shares			2	4,021				12
Share options				670
ESPP discount				153
Supplemental Executive Retirement Plan (SERP)				149
Change in market value of Redeemable Noncontrolling Interests ?Operating Partnership	$ (111,449)			111,449
Adjustment for Noncontrolling Interests ownership in Operating Partnership				(3,440)				3,440
PAID IN CAPITAL
Conversion of OP Units into Common Shares				1,844
Exercise of share options			2	11,149
Employee Share Purchase Plan (ESPP)				869
RETAINED EARNINGS
Net income attributable to controlling interests	308,606				308,606
Common Share distributions					(224,507)
Preferred Share distributions					(773)
Accumulated other comprehensive income (loss) - derivative instruments:
Unrealized holding gains (losses) arising during the period	(967)					(967)
Losses reclassified into earnings from other comprehensive income	(5,634)					5,634
DISTRIBUTIONS
Distributions declared per Common Share outstanding							$ 0.6025
NONCONTROLLING INTERESTS
Issuance of restricted units/shares			2	4,021				12
Conversion of OP Units held by Noncontrolling Interests into OP Units held by General Partner								(1,844)
Equity compensation associated with Noncontrolling Interests								5,067
Net income attributable to Noncontrolling Interests	11,535							11,535	12,530
Distributions to Noncontrolling Interests								(9,076)	(9,315)
Change in carrying value of Redeemable Noncontrolling Interests - Operating Partnership	1,391							(1,391)
Adjustment for Noncontrolling Interests ownership in Operating Partnership				(3,440)				3,440
PARTIALLY OWNED PROPERTIES
Net income attributable to Noncontrolling Interests	11,535							11,535	12,530
Contributions by Noncontrolling Interests									341
Distributions to Noncontrolling Interests								(9,076)	(9,315)
Balance, end of period at Mar. 31, 2020		37,280	3,721	9,092,441	1,469,821	(72,896)
Balance, end of period at Mar. 31, 2020								235,580	4,739
Balance, beginning of year at Dec. 31, 2020	10,525,651	37,280	3,723	9,128,599	1,399,715	(43,666)
Balance, beginning of year at Dec. 31, 2020	237,835							233,162	4,673
COMMON SHARES, $0.01 PAR VALUE
Exercise of share options			5	22,877
Employee Share Purchase Plan (ESPP)				1,731
Share-based employee compensation expense:
Issuance of restricted units/shares			1	2,273
Share options				988
ESPP discount				444
Supplemental Executive Retirement Plan (SERP)				(1,229)
Change in market value of Redeemable Noncontrolling Interests ?Operating Partnership	72,956			(72,956)
Adjustment for Noncontrolling Interests ownership in Operating Partnership				619				(619)
PAID IN CAPITAL
Exercise of share options			5	22,877
Employee Share Purchase Plan (ESPP)				1,731
RETAINED EARNINGS
Net income attributable to controlling interests	57,539				57,539
Common Share distributions					(224,673)
Preferred Share distributions					(773)
Accumulated other comprehensive income (loss) - derivative instruments:
Losses reclassified into earnings from other comprehensive income	(2,303)					2,303
DISTRIBUTIONS
Distributions declared per Common Share outstanding							$ 0.6025
NONCONTROLLING INTERESTS
Issuance of restricted units/shares			1	2,273
Equity compensation associated with Noncontrolling Interests								6,488
Net income attributable to Noncontrolling Interests	2,143							2,143	682
Distributions to Noncontrolling Interests								(8,589)	(2,883)
Change in carrying value of Redeemable Noncontrolling Interests - Operating Partnership	(2,384)							2,384
Adjustment for Noncontrolling Interests ownership in Operating Partnership				619				(619)
PARTIALLY OWNED PROPERTIES
Net income attributable to Noncontrolling Interests	2,143							2,143	682
Distributions to Noncontrolling Interests								(8,589)	(2,883)
Balance, end of period at Mar. 31, 2021	10,314,800	$ 37,280	$ 3,729	$ 9,083,346	$ 1,231,808	$ (41,363)
Balance, end of period at Mar. 31, 2021	$ 237,441							$ 234,969	$ 2,472

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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) - $ / shares	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Statement Of Stockholders Equity [Abstract]
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01	$ 0.01

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CONSOLIDATED BALANCE SHEETS OF ERP OPERATING LIMITED PARTNERSHIP (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
ASSETS
Land	$ 5,785,367	$ 5,785,367
Depreciable property	20,952,067	20,920,654
Projects under development	476,010	411,134
Land held for development	88,360	86,170
Investment in real estate	27,301,804	27,203,325
Accumulated depreciation	(8,059,619)	(7,859,657)
Investment in real estate, net	19,242,185	19,343,668
Investments in unconsolidated entities	53,274	52,782
Cash and cash equivalents	35,453	42,591
Restricted deposits	62,383	57,137
Right-of-use assets	484,999	499,287
Other assets	290,721	291,426
Total assets	20,169,015	20,286,891
Liabilities:
Mortgage notes payable, net	2,270,700	2,293,890
Notes, net	5,337,103	5,335,536
Line of credit and commercial paper	429,753	414,830
Accounts payable and accrued expenses	168,028	107,366
Accrued interest payable	55,489	65,896
Lease liabilities	316,838	329,130
Other liabilities	335,664	345,064
Security deposits	60,939	60,480
Distributions payable	232,737	232,262
Total liabilities	9,207,251	9,184,454
Commitments and contingencies
Redeemable Limited Partners	409,523	338,951
Partners’ Capital:
Accumulated other comprehensive income (loss)	(41,363)	(43,666)
Noncontrolling Interests – Partially Owned Properties	2,472	4,673
Total liabilities and equity/capital	20,169,015	20,286,891
ERPOP [Member]
ASSETS
Land	5,785,367	5,785,367
Depreciable property	20,952,067	20,920,654
Projects under development	476,010	411,134
Land held for development	88,360	86,170
Investment in real estate	27,301,804	27,203,325
Accumulated depreciation	(8,059,619)	(7,859,657)
Investment in real estate, net	19,242,185	19,343,668
Investments in unconsolidated entities	53,274	52,782
Cash and cash equivalents	35,453	42,591
Restricted deposits	62,383	57,137
Right-of-use assets	484,999	499,287
Other assets	290,721	291,426
Total assets	20,169,015	20,286,891
Liabilities:
Mortgage notes payable, net	2,270,700	2,293,890
Notes, net	5,337,103	5,335,536
Line of credit and commercial paper	429,753	414,830
Accounts payable and accrued expenses	168,028	107,366
Accrued interest payable	55,489	65,896
Lease liabilities	316,838	329,130
Other liabilities	335,664	345,064
Security deposits	60,939	60,480
Distributions payable	232,737	232,262
Total liabilities	9,207,251	9,184,454
Commitments and contingencies
Redeemable Limited Partners	409,523	338,951
Partners’ Capital:
Preference Units	37,280	37,280
General Partner	10,318,883	10,532,037
Limited Partners	234,969	233,162
Accumulated other comprehensive income (loss)	(41,363)	(43,666)
Total partners’ capital	10,549,769	10,758,813
Noncontrolling Interests – Partially Owned Properties	2,472	4,673
Total capital	10,552,241	10,763,486
Total liabilities and equity/capital	$ 20,169,015	$ 20,286,891

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CONSOLIDATED STATEMENTS OF OPERATIONS OF ERP OPERATING LIMITED PARTNERSHIP (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
REVENUES
Rental income	$ 597,602	$ 682,305
EXPENSES
Property and maintenance	117,054	115,816
Real estate taxes and insurance	103,470	97,732
Property management	26,130	27,709
General and administrative	15,383	14,518
Depreciation	199,962	212,422
Total expenses	461,999	468,197
Net gain (loss) on sales of real estate properties	(43)	207,977
Operating income	135,560	422,085
Interest and other income	216	1,960
Other expenses	(4,110)	(2,533)
Interest:
Expense incurred, net	(67,358)	(85,590)
Amortization of deferred financing costs	(2,185)	(2,041)
Income before income and other taxes, income (loss) from investments in unconsolidated entities and net gain (loss) on sales of land parcels	62,123	333,881
Income and other tax (expense) benefit	(153)	(53)
Income (loss) from investments in unconsolidated entities	(1,611)	(1,157)
Net gain (loss) on sales of land parcels	5
Net income	60,364	332,671
Partially Owned Properties	(682)	(12,530)
Net income attributable to controlling interests	$ 57,539	$ 308,606
Earnings per Unit – basic:
Net income available to Units	$ 0.15	$ 0.83
Earnings per Unit – diluted:
Net income available to Units	$ 0.15	$ 0.83
Weighted average Units outstanding	386,916	386,949
ERPOP [Member]
REVENUES
Rental income	$ 597,602	$ 682,305
EXPENSES
Property and maintenance	117,054	115,816
Real estate taxes and insurance	103,470	97,732
Property management	26,130	27,709
General and administrative	15,383	14,518
Depreciation	199,962	212,422
Total expenses	461,999	468,197
Net gain (loss) on sales of real estate properties	(43)	207,977
Operating income	135,560	422,085
Interest and other income	216	1,960
Other expenses	(4,110)	(2,533)
Interest:
Expense incurred, net	(67,358)	(85,590)
Amortization of deferred financing costs	(2,185)	(2,041)
Income before income and other taxes, income (loss) from investments in unconsolidated entities and net gain (loss) on sales of land parcels	62,123	333,881
Income and other tax (expense) benefit	(153)	(53)
Income (loss) from investments in unconsolidated entities	(1,611)	(1,157)
Net gain (loss) on sales of land parcels	5
Net income	60,364	332,671
Partially Owned Properties	(682)	(12,530)
Net income attributable to controlling interests	59,682	320,141
ALLOCATION OF NET INCOME:
Preference Units	773	773
General Partner	56,766	307,833
Limited Partners	2,143	11,535
Net income available to Units	$ 58,909	$ 319,368
Earnings per Unit – basic:
Net income available to Units	$ 0.15	$ 0.83
Weighted average Units outstanding	385,330	384,586
Earnings per Unit – diluted:
Net income available to Units	$ 0.15	$ 0.83
Weighted average Units outstanding	386,916	386,949

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME OF ERP OPERATING LIMITED PARTNERSHIP (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Comprehensive income:
Net income	$ 60,364	$ 332,671
Other comprehensive income (loss) – derivative instruments:
Unrealized holding gains (losses) arising during the period		(967)
Losses reclassified into earnings from other comprehensive income	2,303	5,634
Other comprehensive income (loss)	2,303	4,667
Comprehensive income	62,667	337,338
Comprehensive (income) attributable to Noncontrolling Interests – Partially Owned Properties	(2,909)	(24,234)
Comprehensive income attributable to controlling interests	59,758	313,104
ERPOP [Member]
Comprehensive income:
Net income	60,364	332,671
Other comprehensive income (loss) – derivative instruments:
Unrealized holding gains (losses) arising during the period		(967)
Losses reclassified into earnings from other comprehensive income	2,303	5,634
Other comprehensive income (loss)	2,303	4,667
Comprehensive income	62,667	337,338
Comprehensive (income) attributable to Noncontrolling Interests – Partially Owned Properties	(682)	(12,530)
Comprehensive income attributable to controlling interests	$ 61,985	$ 324,808

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CONSOLIDATED STATEMENTS OF CASH FLOWS OF ERP OPERATING LIMITED PARTNERSHIP (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 60,364	$ 332,671
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	199,962	212,422
Amortization of deferred financing costs	2,185	2,041
Amortization of above/below market lease intangibles	(18)	(18)
Amortization of discounts and premiums on debt	1,294	1,276
Amortization of deferred settlements on derivative instruments	2,301	5,631
Amortization of right-of-use assets	2,980	3,007
Write-off of pursuit costs	1,331	1,627
(Income) loss from investments in unconsolidated entities	1,611	1,157
Distributions from unconsolidated entities – return on capital		100
Net (gain) loss on sales of real estate properties	43	(207,977)
Net (gain) loss on sales of land parcels	(5)
Realized/unrealized (gain) loss on derivative instruments		25
Compensation paid with Company Common Shares	8,678	7,844
Other operating activities, net	133	1,805
Changes in assets and liabilities:
(Increase) decrease in other assets	20,746	(18,386)
Increase (decrease) in accounts payable and accrued expenses	59,116	62,573
Increase (decrease) in accrued interest payable	(10,407)	(927)
Increase (decrease) in lease liabilities	(868)	(621)
Increase (decrease) in other liabilities	(3,852)	(20,811)
Increase (decrease) in security deposits	459	(988)
Net cash provided by operating activities	346,053	382,451
CASH FLOWS FROM INVESTING ACTIVITIES:
Investment in real estate – development/other	(64,599)	(52,204)
Capital expenditures to real estate	(28,679)	(38,342)
Non-real estate capital additions	(589)	(4,516)
Interest capitalized for real estate under development	(3,769)	(1,834)
Proceeds from disposition of real estate, net		368,364
Investments in unconsolidated entities	(2,378)	(5,458)
Distributions from unconsolidated entities – return of capital	4
Other investing activities, net	(26,335)	(1)
Net cash provided by (used for) investing activities	(126,345)	266,009
CASH FLOWS FROM FINANCING ACTIVITIES:
Debt financing costs	(318)	(181)
Mortgage notes payable, net:
Proceeds	37,492	78
Lump sum payoffs	(59,880)
Scheduled principal repayments	(1,871)	(1,941)
Line of credit and commercial paper:
Line of credit proceeds		720,000
Line of credit repayments		(740,000)
Commercial paper proceeds	1,184,923	1,905,818
Commercial paper repayments	(1,170,000)	(2,291,000)
Proceeds from (payments on) settlement of derivative instruments		(25)
Finance ground lease principal payments	(116)
Proceeds from Employee Share Purchase Plan (ESPP)	1,731	869
Proceeds from exercise of EQR options	22,882	11,151
Contributions – Noncontrolling Interests – Partially Owned Properties		341
Contributions – Limited Partners		12
Distributions:
OP Units – General Partner	(224,308)	(211,239)
Preference Units	(773)	(773)
OP Units – Limited Partners	(8,479)	(8,484)
Noncontrolling Interests – Partially Owned Properties	(2,883)	(9,315)
Net cash provided by (used for) financing activities	(221,600)	(624,689)
Net increase (decrease) in cash and cash equivalents and restricted deposits	(1,892)	23,771
Cash and cash equivalents and restricted deposits, beginning of period	99,728	116,999
Cash and cash equivalents and restricted deposits, end of period	97,836	140,770
Cash and cash equivalents	35,453	82,335
Restricted deposits	62,383	58,435
SUPPLEMENTAL INFORMATION:
Cash paid for interest, net of amounts capitalized	74,058	75,561
Net cash paid (received) for income and other taxes	752	266
Amortization of deferred financing costs:
Investment in real estate, net	(60)	(60)
Other assets	585	584
Mortgage notes payable, net	703	403
Notes, net	957	1,114
Amortization of discounts and premiums on debt:
Mortgage notes payable, net	684	595
Notes, net	610	681
Amortization of deferred settlements on derivative instruments:
Other liabilities	(2)	(3)
Accumulated other comprehensive income	2,303	5,634
Write-off of pursuit costs:
Investment in real estate, net	1,209	1,586
Other assets	114	33
Accounts payable and accrued expenses	8	8
(Income) loss from investments in unconsolidated entities:
Investments in unconsolidated entities	1,282	830
Other liabilities	329	327
Realized/unrealized (gain) loss on derivative instruments:
Other liabilities		992
Accumulated other comprehensive income		(967)
Investments in unconsolidated entities:
Investments in unconsolidated entities	(1,778)	(4,558)
Other liabilities	(600)	(900)
Debt financing costs:
Other assets		(181)
Mortgage notes payable, net	(318)
Right-of-use assets and lease liabilities initial measurement and reclassifications:
Right-of-use assets	11,308
Lease liabilities	(11,308)
ERPOP [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	60,364	332,671
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	199,962	212,422
Amortization of deferred financing costs	2,185	2,041
Amortization of above/below market lease intangibles	(18)	(18)
Amortization of discounts and premiums on debt	1,294	1,276
Amortization of deferred settlements on derivative instruments	2,301	5,631
Amortization of right-of-use assets	2,980	3,007
Write-off of pursuit costs	1,331	1,627
(Income) loss from investments in unconsolidated entities	1,611	1,157
Distributions from unconsolidated entities – return on capital		100
Net (gain) loss on sales of real estate properties	43	(207,977)
Net (gain) loss on sales of land parcels	(5)
Realized/unrealized (gain) loss on derivative instruments		25
Compensation paid with Company Common Shares	8,678	7,844
Other operating activities, net	133	1,805
Changes in assets and liabilities:
(Increase) decrease in other assets	20,746	(18,386)
Increase (decrease) in accounts payable and accrued expenses	59,116	62,573
Increase (decrease) in accrued interest payable	(10,407)	(927)
Increase (decrease) in lease liabilities	(868)	(621)
Increase (decrease) in other liabilities	(3,852)	(20,811)
Increase (decrease) in security deposits	459	(988)
Net cash provided by operating activities	346,053	382,451
CASH FLOWS FROM INVESTING ACTIVITIES:
Investment in real estate – development/other	(64,599)	(52,204)
Capital expenditures to real estate	(28,679)	(38,342)
Non-real estate capital additions	(589)	(4,516)
Interest capitalized for real estate under development	(3,769)	(1,834)
Proceeds from disposition of real estate, net		368,364
Investments in unconsolidated entities	(2,378)	(5,458)
Distributions from unconsolidated entities – return of capital	4
Other investing activities, net	(26,335)	(1)
Net cash provided by (used for) investing activities	(126,345)	266,009
CASH FLOWS FROM FINANCING ACTIVITIES:
Debt financing costs	(318)	(181)
Mortgage notes payable, net:
Proceeds	37,492	78
Lump sum payoffs	(59,880)
Scheduled principal repayments	(1,871)	(1,941)
Line of credit and commercial paper:
Line of credit proceeds		720,000
Line of credit repayments		(740,000)
Commercial paper proceeds	1,184,923	1,905,818
Commercial paper repayments	(1,170,000)	(2,291,000)
Proceeds from (payments on) settlement of derivative instruments		(25)
Finance ground lease principal payments	(116)
Proceeds from Employee Share Purchase Plan (ESPP)	1,731	869
Proceeds from exercise of EQR options	22,882	11,151
Contributions – Noncontrolling Interests – Partially Owned Properties		341
Contributions – Limited Partners		12
Distributions:
OP Units – General Partner	(224,308)	(211,239)
Preference Units	(773)	(773)
OP Units – Limited Partners	(8,479)	(8,484)
Noncontrolling Interests – Partially Owned Properties	(2,883)	(9,315)
Net cash provided by (used for) financing activities	(221,600)	(624,689)
Net increase (decrease) in cash and cash equivalents and restricted deposits	(1,892)	23,771
Cash and cash equivalents and restricted deposits, beginning of period	99,728	116,999
Cash and cash equivalents and restricted deposits, end of period	97,836	140,770
Cash and cash equivalents	35,453	82,335
Restricted deposits	62,383	58,435
SUPPLEMENTAL INFORMATION:
Cash paid for interest, net of amounts capitalized	74,058	75,561
Net cash paid (received) for income and other taxes	752	266
Amortization of deferred financing costs:
Investment in real estate, net	(60)	(60)
Other assets	585	584
Mortgage notes payable, net	703	403
Notes, net	957	1,114
Amortization of discounts and premiums on debt:
Mortgage notes payable, net	684	595
Notes, net	610	681
Amortization of deferred settlements on derivative instruments:
Other liabilities	(2)	(3)
Accumulated other comprehensive income	2,303	5,634
Write-off of pursuit costs:
Investment in real estate, net	1,209	1,586
Other assets	114	33
Accounts payable and accrued expenses	8	8
(Income) loss from investments in unconsolidated entities:
Investments in unconsolidated entities	1,282	830
Other liabilities	329	327
Realized/unrealized (gain) loss on derivative instruments:
Other liabilities		992
Accumulated other comprehensive income		(967)
Investments in unconsolidated entities:
Investments in unconsolidated entities	(1,778)	(4,558)
Other liabilities	(600)	(900)
Debt financing costs:
Other assets		$ (181)
Mortgage notes payable, net	(318)
Right-of-use assets and lease liabilities initial measurement and reclassifications:
Right-of-use assets	11,308
Lease liabilities	$ (11,308)

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CONSOLIDATED STATEMENTS OF CHANGES IN CAPITAL OF ERP OPERATING LIMITED PARTNERSHIP (Unaudited) - USD ($) $ in Thousands	Total	ERPOP [Member]	PREFERRED SHARES ERPOP [Member]	General Partner [Member] ERPOP [Member]	Limited Partner ERPOP [Member]	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) ERPOP [Member]	DISTRIBUTIONS [Member]	PARTIALLY OWNED PROPERTIES [Member] ERPOP [Member]
Balance, beginning of year at Dec. 31, 2019			$ 37,280	$ 10,355,789	$ 227,837	$ (77,563)
Balance, beginning of year at Dec. 31, 2019								$ 1,183
Conversion of OP Units held by Limited Partners into OP Units held by General Partner				1,844	(1,844)
Exercise of EQR share options				11,151
EQR's Employee Share Purchase Plan (ESPP)				869
EQR restricted shares				4,023	12
EQR share options				670
EQR ESPP discount				153
Net income available to Units - General Partner		$ 307,833		307,833
OP Units General Partner distributions				(224,507)
Supplemental Executive Retirement Plan (SERP)				149
Change in market value of Redeemable Limited Partners				111,449
Adjustment for Limited Partners ownership in Operating Partnership				(3,440)	3,440
Equity compensation associated with Units - Limited Partners					5,067
Net income available to Units - Limited Partners		11,535			11,535
Units - Limited Partners distributions					(9,076)
Change in carrying value of Redeemable Limited Partners					(1,391)
Unrealized holding (losses) arising during the period	$ 12,530	12,530				(967)
Losses reclassified into earnings from other comprehensive income	(5,634)	(5,634)				5,634
Distributions declared per Unit outstanding							$ 0.6025
Net income attributable to Noncontrolling Interests	332,671	332,671						12,530
Contributions by Noncontrolling Interests								341
Distributions to Noncontrolling Interests								(9,315)
Balance, end of period at Mar. 31, 2020			37,280	10,565,983	235,580	(72,896)
Balance, end of period at Mar. 31, 2020								4,739
Balance, beginning of year at Dec. 31, 2020			37,280	10,532,037	233,162	(43,666)
Balance, beginning of year at Dec. 31, 2020								4,673
Exercise of EQR share options				22,882
EQR's Employee Share Purchase Plan (ESPP)				1,731
EQR restricted shares				2,274
EQR share options				988
EQR ESPP discount				444
Net income available to Units - General Partner		56,766		56,766
OP Units General Partner distributions				(224,673)
Supplemental Executive Retirement Plan (SERP)				(1,229)
Change in market value of Redeemable Limited Partners				(72,956)
Adjustment for Limited Partners ownership in Operating Partnership				619	(619)
Equity compensation associated with Units - Limited Partners					6,488
Net income available to Units - Limited Partners		2,143			2,143
Units - Limited Partners distributions					(8,589)
Change in carrying value of Redeemable Limited Partners					2,384
Unrealized holding (losses) arising during the period	682	682
Losses reclassified into earnings from other comprehensive income	(2,303)	(2,303)				2,303
Distributions declared per Unit outstanding							$ 0.6025
Net income attributable to Noncontrolling Interests	$ 60,364	$ 60,364						682
Distributions to Noncontrolling Interests								(2,883)
Balance, end of period at Mar. 31, 2021			$ 37,280	$ 10,318,883	$ 234,969	$ (41,363)
Balance, end of period at Mar. 31, 2021								$ 2,472

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Business

3 Months Ended

Mar. 31, 2021

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Business

1. Business

Equity Residential (“EQR”) is an S&P 500 company focused on the acquisition, development and management of residential properties located in and around dynamic cities that attract high quality long-term renters, a business that is conducted on its behalf by ERP Operating Limited Partnership (“ERPOP”).  EQR is a Maryland real estate investment trust (“REIT”) formed in March 1993 and ERPOP is an Illinois limited partnership formed in May 1993.  References to the “Company,” “we,” “us” or “our” mean collectively EQR, ERPOP and those entities/subsidiaries owned or controlled by EQR and/or ERPOP.  References to the “Operating Partnership” mean collectively ERPOP and those entities/subsidiaries owned or controlled by ERPOP.  Unless otherwise indicated, the notes to consolidated financial statements apply to both the Company and the Operating Partnership.

EQR is the general partner of, and as of March 31, 2021 owned an approximate 96.4% ownership interest in, ERPOP.  All of the Company’s property ownership, development and related business operations are conducted through the Operating Partnership and EQR has no material assets or liabilities other than its investment in ERPOP.  EQR issues equity from time to time, the net proceeds of which it is obligated to contribute to ERPOP, but does not have any indebtedness as all debt is incurred by the Operating Partnership.  The Operating Partnership holds substantially all of the assets of the Company, including the Company’s ownership interests in its joint ventures.  The Operating Partnership conducts the operations of the business and is structured as a partnership with no publicly traded equity.

As of March 31, 2021, the Company, directly or indirectly through investments in title holding entities, owned all or a portion of 304 properties located in 9 states and the District of Columbia consisting of 77,889 apartment units.  The ownership breakdown includes (table does not include various uncompleted development properties):

	Properties		Apartment Units
Wholly Owned Properties		287		74,328
Master-Leased Property – Consolidated		1		162
Partially Owned Properties – Consolidated		16		3,399
		304		77,889

COVID-19 Pandemic

The continued rapid development and fast-changing nature of the novel coronavirus (“COVID-19”) pandemic creates many unknowns that have had and could continue to have a significant future impact on the Company.  Its duration, severity and the extent of the adverse health impact on the general population, our residents and employees, the rollout and effectiveness of vaccines and the potential long-term changes in customer preferences for living in our communities, are among the many unknowns.  These, among other items, have impacted the economy, the unemployment rate and our operations and could materially affect our future consolidated results of operations, financial condition, liquidity, investments and overall performance.  There have been no material changes to the overall COVID-19 disclosures that were discussed in the notes to the consolidated financial statements of the Company’s and the Operating Partnership’s Annual Report on Form 10-K for the year ended December 31, 2020.

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Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2021

Summary Of Significant Accounting Policies [Abstract]

Summary of Significant Accounting Policies

2. Summary of Significant Accounting Policies

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X.  Accordingly, they do not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.  In the opinion of management, all adjustments (consisting of normal recurring accruals) and certain reclassifications considered necessary for a fair presentation have been included.  Operating results for the quarter ended March 31, 2021 are not necessarily indicative of the results that may be expected for the year ending December 31, 2021.

In preparation of the Company’s financial statements in conformity with accounting principles generally accepted in the United States, management makes estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of

contingent assets and liabilities at the date of the financial statements as well as the reported amounts of revenues and expenses during the reporting period.  Actual results could differ from these estimates.  In response to the COVID-19 pandemic, management evaluated whether its estimates, such as lease collectibility (discussed below in Recently Adopted Accounting Pronouncements) and impairment, required revised approaches and generally concluded that no revisions were necessary at this time.

The balance sheets at December 31, 2020 have been derived from the audited financial statements at that date but do not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.

For further information, including definitions of capitalized terms not defined herein, refer to the consolidated financial statements and footnotes thereto included in the Company’s and the Operating Partnership’s Annual Report on Form 10-K for the year ended December 31, 2020.

Income and Other Taxes

EQR has elected to be taxed as a REIT.  This, along with the nature of the operations of its operating properties, resulted in no provision for federal income taxes at the EQR level.  In addition, ERPOP generally is not liable for federal income taxes as the partners recognize their allocable share of income or loss in their tax returns; therefore no provision for federal income taxes has been made at the ERPOP level.  Historically, the Company has generally only incurred certain state and local income, excise and franchise taxes.  The Company has elected taxable REIT subsidiary (“TRS”) status for certain of its corporate subsidiaries and, as a result, these entities will incur both federal and state income taxes on any taxable income of such entities after consideration of any net operating losses.

On March 27, 2020, the President signed into law the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”).  The CARES Act was enacted to provide economic relief to companies and individuals in response to the COVID-19 pandemic.  Included in the CARES Act were tax provisions which increased allowable interest expense deductions for 2019 and 2020 and increased the ability for taxpayers to use net operating losses.  These provisions did not result in a material impact to the Company’s taxable income or tax liabilities.

Recently Issued Accounting Pronouncements

In August 2020, the Financial Accounting Standards Board (“FASB”) issued an amendment to the debt and equity financial instruments standards which simplifies the accounting for convertible instruments and accounting for contracts in an entity’s own equity.  Instead of being required to assess whether an equity contract permits settlement in unregistered shares, which may require a legal analysis under the securities laws, entities will only analyze whether cash settlements are explicitly required when registered shares are unavailable.  As a result, such contracts may be classified in permanent rather than mezzanine equity, which may affect the way the Company’s OP Units are presented on its financial statements.  The update is effective for the Company beginning on January 1, 2022 as the Company did not early adopt the standard as allowed on January 1, 2021.  The Company is currently evaluating the impact of adopting the new standard on its consolidated results of operations and financial position.

In March 2020, the FASB issued an amendment to the reference rate reform standard which provides the option for a limited period of time to ease the potential burden in accounting for, or recognizing the effects of, reference rate reform on contract modifications and hedge accounting.  An example of such reform is the expected market transition from the London Interbank Offered Rate (“LIBOR”) and other interbank offered rates to alternative reference rates.  Entities that make this optional expedient election would not have to remeasure the contracts at the modification date or reassess the accounting treatment if certain criteria are met and would continue applying hedge accounting for relationships affected by reference rate reform.  The new standard was effective for the Company upon issuance and elections can be made through December 31, 2022.  The Company is currently evaluating its options with regards to existing contracts and hedging relationships and the impact of adopting this update on its consolidated results of operations and financial position.

Recently Adopted Accounting Pronouncements

In April 2020, a FASB staff question and answer document was issued which intended to reduce the challenges of evaluating the enforceable rights and obligations of leases for concessions granted to lessees in response to the COVID-19 pandemic.  We elected not to evaluate whether qualifying concessions provided by the Company in response to the COVID-19 pandemic are a lease modification, subject to the criteria that the total payments under the amended lease cannot result in a substantial increase in the rights of the lessor or obligations of the lessee.  We also elected to treat the concessions as though they were contemplated as part of the existing contracts and therefore will not apply lease modification rules to the qualifying lease concession amendments.  As such, deferrals deemed collectible are recorded as rental receivables with no change to timing of rental revenues and deferrals deemed non-collectible and abatements reduce rental revenues in the deferral/abatement period and cause rental revenues to effectively follow a cash basis related to the changes.  The accounting elections provided by the FASB mainly apply to the Company’s non-residential leases and the majority of the amendments will not require a straight-line adjustment.  See Note 8 for additional discussion.

In June 2016, the FASB issued a standard which requires companies to adopt a new approach for estimating credit losses on certain types of financial instruments, such as trade and other receivables and loans.  The standard requires entities to estimate a lifetime expected credit loss for most financial instruments, including trade receivables.  In November 2018, the FASB issued an amendment excluding operating lease receivables accounted for under the lease standard from the scope of the credit losses standard.  The Company adopted this standard as required effective January 1, 2020 and it did not have a material effect on its consolidated results of operations and financial position.

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Equity, Capital and Other Interests

3 Months Ended

Mar. 31, 2021

Equity Capital And Other Interests [Abstract]

Equity, Capital and Other Interests

3. Equity, Capital and Other Interests

The Company refers to “Common Shares” and “Units” (which refer to both OP Units and restricted units) as equity securities for EQR and “General Partner Units” and “Limited Partner Units” as equity securities for ERPOP.  To provide a streamlined and more readable presentation of the disclosures for the Company and the Operating Partnership, several sections below refer to the respective terminology for each with the same financial information and separate sections are provided, where needed, to further distinguish any differences in financial information and terminology.

The following table presents the changes in the Company’s issued and outstanding Common Shares and Units for the quarters ended March 31, 2021 and 2020:

	2021			2020
Common Shares
Common Shares outstanding at January 1,		372,302,000			371,670,884
Common Shares Issued:
Conversion of OP Units		—			41,945
Exercise of share options		506,342			214,521
Employee Share Purchase Plan (ESPP)		32,572			13,606
Restricted share grants, net		76,499			163,098
Common Shares outstanding at March 31,		372,917,413			372,104,054
Units
Units outstanding at January 1,		13,858,073			13,731,315
Restricted unit grants, net		184,301			243,063
Conversion of OP Units to Common Shares		—			(41,945	)
Units outstanding at March 31,		14,042,374			13,932,433
Total Common Shares and Units outstanding at March 31,		386,959,787			386,036,487
Units Ownership Interest in Operating Partnership		3.6	%		3.6	%

The following table presents the changes in the Operating Partnership’s issued and outstanding General Partner Units and Limited Partner Units for the quarters ended March 31, 2021 and 2020:

	2021			2020
General and Limited Partner Units
General and Limited Partner Units outstanding at January 1,		386,160,073			385,402,199
Issued to General Partner:
Exercise of EQR share options		506,342			214,521
EQR’s Employee Share Purchase Plan (ESPP)		32,572			13,606
EQR’s restricted share grants, net		76,499			163,098
Issued to Limited Partners:
Restricted unit grants, net		184,301			243,063
General and Limited Partner Units outstanding at March 31,		386,959,787			386,036,487
Limited Partner Units
Limited Partner Units outstanding at January 1,		13,858,073			13,731,315
Limited Partner restricted unit grants, net		184,301			243,063
Conversion of Limited Partner OP Units to EQR Common Shares		—			(41,945	)
Limited Partner Units outstanding at March 31,		14,042,374			13,932,433
Limited Partner Units Ownership Interest in Operating Partnership		3.6	%		3.6	%

The equity positions of various individuals and entities that contributed their properties to the Operating Partnership in exchange for OP Units, as well as the equity positions of the holders of restricted units, are collectively referred to as the “Noncontrolling Interests – Operating Partnership” and “Limited Partners Capital,” respectively, for the Company and the Operating Partnership.  Subject to certain exceptions (including the “book-up” requirements of restricted units), the Noncontrolling Interests – Operating Partnership/Limited Partners Capital may exchange their Units with EQR for Common Shares on a one-for-one basis.  The carrying value of the Noncontrolling Interests – Operating Partnership/Limited Partners Capital (including redeemable interests) is allocated based on the number of Noncontrolling Interests – Operating Partnership/Limited Partners Capital in total in proportion to the number of Noncontrolling Interests – Operating Partnership/Limited Partners Capital in total plus the total number of Common Shares/General Partner Units.  Net income is allocated to the Noncontrolling Interests – Operating Partnership/Limited Partners Capital based on the weighted average ownership percentage during the period.

The Operating Partnership has the right but not the obligation to make a cash payment instead of issuing Common Shares to any and all holders of Noncontrolling Interests – Operating Partnership/Limited Partners Capital requesting an exchange of their Noncontrolling Interests – Operating Partnership/Limited Partners Capital with EQR.  Once the Operating Partnership elects not to redeem the Noncontrolling Interests – Operating Partnership/Limited Partners Capital for cash, EQR is obligated to deliver Common Shares to the exchanging holder of the Noncontrolling Interests – Operating Partnership/Limited Partners Capital.

The Noncontrolling Interests – Operating Partnership/Limited Partners Capital are classified as either mezzanine equity or permanent equity.  If EQR is required, either by contract or securities law, to deliver registered Common Shares, such Noncontrolling Interests – Operating Partnership/Limited Partners Capital are differentiated and referred to as “Redeemable Noncontrolling Interests – Operating Partnership” and “Redeemable Limited Partners,” respectively.  Instruments that require settlement in registered shares cannot be classified in permanent equity as it is not always completely within an issuer’s control to deliver registered shares.  Therefore, settlement in cash is assumed and that responsibility for settlement in cash is deemed to fall to the Operating Partnership as the primary source of cash for EQR, resulting in presentation in the mezzanine section of the balance sheet.  The Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners are adjusted to the greater of carrying value or fair market value based on the Common Share price of EQR at the end of each respective reporting period.  EQR has the ability to deliver unregistered Common Shares for the remaining portion of the Noncontrolling Interests – Operating Partnership/Limited Partners Capital that are classified in permanent equity at March 31, 2021 and December 31, 2020.

The carrying value of the Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners is allocated based on the number of Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners in proportion to the number of Noncontrolling Interests – Operating Partnership/Limited Partners Capital in total.  Such percentage of the total carrying value of Units/Limited Partner Units which is ascribed to the Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners is then adjusted to the greater of carrying value or fair market value as described above.  As of March 31, 2021 and 2020, the Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners have a redemption value of approximately $409.5 million and $353.3 million, respectively, which represents the value of Common Shares that would be issued in exchange for the Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners.

The following table presents the changes in the redemption value of the Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners for the quarters ended March 31, 2021 and 2020, respectively (amounts in thousands):

	2021			2020
Balance at January 1,	$	338,951		$	463,400
Change in market value		72,956			(111,449	)
Change in carrying value		(2,384	)		1,391
Balance at March 31,	$	409,523		$	353,342

Net proceeds from EQR Common Share and Preferred Share (see definition below) offerings and proceeds from exercise of options for Common Shares are contributed by EQR to ERPOP.  In return for those contributions, EQR receives a number of OP Units in ERPOP equal to the number of Common Shares it has issued in the equity offering (or in the case of a preferred equity offering, a number of preference units in ERPOP equal in number and having the same terms as the Preferred Shares issued in the equity offering).  As a result, the net proceeds from Common Shares and Preferred Shares are allocated for the Company between shareholders’ equity and Noncontrolling Interests – Operating Partnership and for the Operating Partnership between General Partner’s Capital and Limited Partners Capital to account for the change in their respective percentage ownership of the underlying equity.

The Company’s declaration of trust authorizes it to issue up to 100,000,000 preferred shares of beneficial interest, $0.01 par value per share (the “Preferred Shares”), with specific rights, preferences and other attributes as the Board of Trustees may determine, which may include preferences, powers and rights that are senior to the rights of holders of the Company’s Common Shares.

The following table presents the Company’s issued and outstanding Preferred Shares/Preference Units as of March 31, 2021 and December 31, 2020:

				Amounts in thousands
		Annual
	Call	Dividend Per		March 31,		December 31,
	Date (1)	Share/Unit (2)		2021		2020
Preferred Shares/Preference Units of beneficial interest, $0.01 par value;    100,000,000 shares authorized:
8.29% Series K Cumulative Redeemable Preferred Shares/Preference    Units; liquidation value $50 per share/unit; 745,600 shares/units issued    and outstanding as of March 31, 2021 and December 31, 2020	12/10/26	$	4.145	$	37,280	$	37,280
				$	37,280	$	37,280

(1) On or after the call date, redeemable Preferred Shares/Preference Units may be redeemed for cash at the option of the Company or the Operating Partnership, respectively, in whole or in part, at a redemption price equal to the liquidation price per share/unit, plus accrued and unpaid distributions, if any.

(2) Dividends on Preferred Shares/Preference Units are payable quarterly.

Other

EQR and ERPOP currently have an active universal shelf registration statement for the issuance of equity and debt securities that automatically became effective upon filing with the SEC in June 2019 and expires in June 2022.  Per the terms of ERPOP’s partnership agreement, EQR contributes the net proceeds of all equity offerings to the capital of ERPOP in exchange for additional OP Units (on a one-for-one Common Share per OP Unit basis) or preference units (on a one-for-one preferred share per preference unit basis).

The Company has an At-The-Market (“ATM”) share offering program which allows EQR to sell Common Shares from time to time into the existing trading market at current market prices as well as through negotiated transactions.  In June 2019, the Company extended the program maturity to June 2022.  In connection with the extension, the Company may now also sell Common Shares under forward sale agreements.  The use of a forward sale agreement would allow the Company to lock in a price on the sale of Common Shares at the time the agreement is executed, but defer receiving the proceeds from the sale until a later date.  EQR has the authority to issue 13.0 million shares but has not issued any shares under this program since September 2012.

The Company may repurchase up to 13.0 million Common Shares under its share repurchase program.  No open market repurchases have occurred since 2008, and no repurchases of any kind have occurred since February 2014.  As of March 31, 2021, EQR has remaining authorization to repurchase up to 13.0 million of its shares.  

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Real Estate

3 Months Ended

Mar. 31, 2021

Real Estate [Abstract]

Real Estate

4. Real Estate

The following table summarizes the carrying amounts for the Company’s investment in real estate (at cost) as of March 31, 2021 and December 31, 2020 (amounts in thousands):

	March 31, 2021			December 31, 2020
Land	$	5,785,367		$	5,785,367
Depreciable property:
Buildings and improvements		18,476,711			18,464,484
Furniture, fixtures and equipment		1,989,219			1,970,033
In-Place lease intangibles		486,137			486,137
Projects under development:
Land		23,531			23,531
Construction-in-progress		452,479			387,603
Land held for development:
Land		46,160			46,160
Construction-in-progress		42,200			40,010
Investment in real estate		27,301,804			27,203,325
Accumulated depreciation		(8,059,619	)		(7,859,657	)
Investment in real estate, net	$	19,242,185		$	19,343,668

The Company did not acquire or sell any assets during the first quarter of 2021.

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Commitments to Acquire/Dispose of Real Estate

3 Months Ended

Mar. 31, 2021

Commitments To Acquire Dispose Of Real Estate [Abstract]

Commitments to Acquire/Dispose of Real Estate

5. Commitments to Acquire/Dispose of Real Estate

The Company has entered into an agreement to acquire the following (purchase price in thousands):

	Properties		Apartment Units		Purchase Price
Rental Properties - Consolidated		1		280	$	95,200
Total		1		280	$	95,200

The Company has entered into separate agreements to dispose of the following (sales price and net book value in thousands):

	Properties		Apartment Units		Sales Price		Net Book Value at March 31, 2021
Rental Properties - Consolidated		2		340	$	240,000	$	139,411
Total		2		340	$	240,000	$	139,411

The closing of pending transactions is subject to certain conditions and restrictions; therefore, there can be no assurance that the transactions will be consummated or that the final terms will not differ in material respects from any agreements summarized above.  See Note 14 for discussion of the properties acquired or disposed of, if any, subsequent to March 31, 2021.

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Investments in Partially Owned Entities

3 Months Ended

Mar. 31, 2021

Investments In Partially Owned Entities [Abstract]

Investments in Partially Owned Entities

6. Investments in Partially Owned Entities

The Company has invested in various properties with unrelated third parties which are either consolidated or accounted for under the equity method of accounting (unconsolidated).  

Consolidated Variable Interest Entities (“VIEs”)

In accordance with accounting standards for consolidation of VIEs, the Company consolidates ERPOP on EQR’s financial statements.  As the sole general partner of ERPOP, EQR has exclusive control of ERPOP’s day-to-day management.  The limited partners are not able to exercise substantive kick-out or participating rights.  As a result, ERPOP qualifies as a VIE.  EQR has a controlling financial interest in ERPOP and, thus, is ERPOP’s primary beneficiary.  EQR has the power to direct the activities of ERPOP that most significantly impact ERPOP’s economic performance as well as the obligation to absorb losses or the right to receive benefits from ERPOP that could potentially be significant to ERPOP.  

The Company has various equity interests in certain joint ventures owning 16 properties containing 3,399 apartment units.  The

Company is the general partner or managing member of these joint ventures and is responsible for managing the operations and affairs of the joint ventures as well as making all decisions regarding the businesses of the joint ventures.  The limited partners or non-managing members are not able to exercise substantive kick-out or participating rights.  As a result, the joint ventures qualify as VIEs.  The Company has a controlling financial interest in the VIEs and, thus, is the VIEs’ primary beneficiary.  The Company has both the power to direct the activities of the VIEs that most significantly impact the VIEs’ economic performance as well as the obligation to absorb losses or the right to receive benefits from the VIEs that could potentially be significant to the VIEs.  As a result, the joint ventures are required to be consolidated on the Company’s financial statements.  

The Company also has two separate consolidated joint ventures which each own land parcels that are being/will be developed into multifamily rental properties.  These joint ventures have been deemed to be VIEs and are consolidated due to the Company being the primary beneficiary.

The consolidated assets and liabilities related to the VIEs discussed above were approximately $780.9 million and $237.8 million, respectively, at March 31, 2021 and approximately $784.1 million and $224.0 million, respectively, at December 31, 2020.

Investments in Unconsolidated Entities

The following table and information summarizes the Company’s investments in unconsolidated entities, which are accounted for under the equity method of accounting as the requirements for consolidation are not met, as of March 31, 2021 and December 31, 2020 (amounts in thousands except for ownership percentage):

	March 31, 2021			December 31, 2020			Ownership Percentage
Investments in Unconsolidated Entities:
Operating Property (VIE) (1)	$	37,731		$	38,288		33.3%
Real Estate Technology (2)		16,036			14,866		Varies
Other		(493	)		(372	)	Varies
Investments in Unconsolidated Entities	$	53,274		$	52,782

(1) Represents an unconsolidated interest in an entity that owns the land underlying one of the consolidated joint venture properties noted above and owns and operates a related parking facility.  The joint venture, as a limited partner, does not have substantive kick-out or participating rights in the entity.  As a result, the entity qualifies as a VIE.  The joint venture does not have a controlling financial interest in the VIE and is not the VIE’s primary beneficiary.  The joint venture does not have the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance or the obligation to absorb losses or the right to receive benefits from the VIE that could potentially be significant to the VIE.  As a result, the entity that owns the land and owns and operates the parking facility is unconsolidated and recorded using the equity method of accounting.

(2) Represents unconsolidated investments in five separate real estate technology funds/companies. 

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Restricted Deposits

3 Months Ended

Mar. 31, 2021

Deposits Restricted [Abstract]

Restricted Deposits

7. Restricted Deposits

The following table presents the Company’s restricted deposits as of March 31, 2021 and December 31, 2020 (amounts in thousands):

	March 31, 2021		December 31, 2020
Mortgage escrow deposits:
Replacement reserves	$	10,182	$	9,877
Mortgage principal reserves/sinking funds		15,360		14,168
Mortgage escrow deposits		25,542		24,045
Restricted cash:
Earnest money on pending acquisitions		3,500		—
Restricted deposits on real estate investments		302		307
Resident security and utility deposits		31,675		31,412
Other		1,364		1,373
Restricted cash		36,841		33,092
Restricted deposits	$	62,383	$	57,137

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Leases

3 Months Ended

Mar. 31, 2021

Leases [Abstract]

Leases

8. Leases

Lessor Accounting

The Company is the lessor for its residential and non-residential leases and these leases will continue to be accounted for as operating leases under the lease standard.

For both the quarters ended March 31, 2021 and 2020, approximately 97% of the Company’s total lease revenue is generated from residential apartment leases that are generally twelve months or less in length.  The residential apartment leases may include lease income related to such items as utility recoveries, parking, storage and pet rent that the Company treats as a single lease component because the amenities cannot be leased on their own and the timing and pattern of revenue recognition are the same.  The collection of lease payments at lease commencement is probable and therefore the Company subsequently recognizes lease income over the lease term on a straight-line basis.  Residential leases are renewable upon consent of both parties on an annual or monthly basis.

For both the quarters ended March 31, 2021 and 2020, approximately 3% of the Company’s total lease revenue is generated by non-residential leases that are generally for terms ranging between five to ten years.  The non-residential leases generally consist of ground floor retail spaces and master-leased parking garages that serve as additional amenities for our residents.  The non-residential leases may include lease income related to such items as utility recoveries, parking rent and storage rent that the Company treats as a single lease component because the amenities cannot be leased on their own and the timing and pattern of revenue recognition are the same.  The collection of lease payments at lease commencement is probable and therefore the Company subsequently recognizes lease income over the lease term on a straight-line basis.  Non-residential leases are renewable with market-based renewal options.

The following table presents the lease income types relating to lease payments for residential and non-residential leases along with the total other rental income for the quarters ended March 31, 2021 and 2020 (amounts in thousands):

	Quarter Ended March 31, 2021								Quarter Ended March 31, 2020
Income Type	Residential Leases			Non-Residential Leases		Total			Residential Leases			Non-Residential Leases			Total
Residential and non-residential rent	$	539,655		$	15,839	$	555,494		$	612,480		$	18,094		$	630,574
Utility recoveries (RUBS income) (1)		17,954			178		18,132			17,418			228			17,646
Parking rent		9,734			267		10,001			9,833			97			9,930
Other lease revenue (2)		(10,262	)		609		(9,653	)		(213	)		(280	)		(493	)
Total lease revenue	$	557,081		$	16,893		573,974		$	639,518		$	18,139			657,657
Parking revenue							5,433									6,783
Other revenue							18,195									17,865
Total other rental income (3)							23,628									24,648
Rental income						$	597,602								$	682,305

(1) RUBS income primarily consists of variable payments representing the recovery of utility costs from residents.

(2) Other lease revenue consists of the revenue adjustment related to bad debt and other miscellaneous lease revenue.

(3) Other rental income is accounted for under the revenue recognition standard.

The economic impact of the pandemic on a subset of our residents and tenants has led to elevated levels of bad debt.  We continue to work with our residents and tenants on payment plans and collections and our bad debt allowance policies remain consistent.

The following table presents residential and non-residential accounts receivable and straight-line receivable balances for the Company’s properties as of March 31, 2021 and December 31, 2020 (amounts in thousands):

	Residential							Non-Residential
Balance Sheet (Other assets):	March 31, 2021				December 31, 2020			March 31, 2021			December 31, 2020
Resident/tenant accounts receivable balances	$	37,248			$	30,856		$	6,847		$	7,598
Allowance for doubtful accounts		(31,799	)			(24,021	)		(5,724	)		(6,527	)
Net receivable balances	$	5,449		(1)	$	6,835		$	1,123		$	1,071
Straight-line receivable balances	$	25,360			$	19,992		$	13,409		$	13,413

(1) The Company held residential security deposits approximating 35.4% of the net receivable balance at March 31, 2021.

The following table presents residential bad debt for the Company’s properties for the quarters ended March 31, 2021 and 2020 (amounts in thousands):

	Quarter Ended March 31,
Income Statement (Rental income):		2021			2020
Bad debt, net	$	13,693		$	3,784
% of rental income		2.4	%		0.6	%

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Debt

3 Months Ended

Mar. 31, 2021

Debt Disclosure [Abstract]

Debt

9. Debt

EQR does not have any indebtedness as all debt is incurred by the Operating Partnership.  Weighted average interest rates noted below for the quarter ended March 31, 2021 include the effect of any derivative instruments and amortization of premiums/discounts/OCI (other comprehensive income) on debt and derivatives.

Mortgage Notes Payable

The following table summarizes the Company’s mortgage notes payable activity for the quarter ended March 31, 2021 (amounts in thousands):

	Mortgage notes payable, net as of December 31, 2020		Proceeds			Lump sum payoffs			Scheduled principal repayments			Amortization of premiums/ discounts		Amortization of deferred financing costs, net (1)		Mortgage notes payable, net as of March 31, 2021
Fixed Rate Debt:
Secured – Conventional	$	1,901,091	$	28,500	(2)	$	(28,200	)	$	(1,871	)	$	378	$	19	$	1,899,917
Floating Rate Debt:
Secured – Conventional		31,494		8,992			—			—			—		60		40,546
Secured – Tax Exempt		361,305		—			(31,680	)		—			306		306		330,237
Floating Rate Debt		392,799		8,992			(31,680	)		—			306		366		370,783
Total	$	2,293,890	$	37,492		$	(59,880	)	$	(1,871	)	$	684	$	385	$	2,270,700

(1) Represents amortization of deferred financing costs, net of debt financing costs.  

(2) Obtained 3.58% fixed rate mortgage debt maturing on March 1, 2031.

The following table summarizes certain interest rate and maturity date information as of and for the quarter ended March 31, 2021:

	March 31, 2021
Interest Rate Ranges	0.05% - 4.21%
Weighted Average Interest Rate	3.18%
Maturity Date Ranges	2022-2061

As of March 31, 2021, the Company had $250.0 million of secured debt (primarily tax-exempt bonds) subject to third party credit enhancement.

Notes

The following table summarizes the Company’s notes activity for the quarter ended March 31, 2021 (amounts in thousands):

	Notes, net as of December 31, 2020		Proceeds		Lump sum payoffs		Realized/unrealized (gain) loss on derivative instruments		Amortization of premiums/ discounts		Amortization of deferred financing costs, net (1)		Notes, net as of March 31, 2021
Fixed Rate Debt:
Unsecured – Public	$	5,335,536	$	—	$	—	$	—	$	610	$	957	$	5,337,103

(1) Represents amortization of deferred financing costs, net of debt financing costs.

The following table summarizes certain interest rate and maturity date information as of and for the quarter ended March 31, 2021:

	March 31, 2021
Interest Rate Ranges	2.50% - 7.57%
Weighted Average Interest Rate	3.77%
Maturity Date Ranges	2023-2047

The Company’s unsecured public notes contain certain financial and operating covenants including, among other things, maintenance of certain financial ratios.  The Company was in compliance with its unsecured public debt covenants for the quarter ended March 31, 2021.

Line of Credit and Commercial Paper

On November 1, 2019, the Company replaced its existing $2.0 billion facility with a $2.5 billion unsecured revolving credit facility maturing November 1, 2024.  The Company has the ability to increase available borrowings by an additional $750.0 million by adding lenders to the facility, obtaining the agreement of existing lenders to increase their commitments or incurring one or more term loans.  The interest rate on advances under the facility will generally be LIBOR plus a spread (currently 0.775%), or based on bids received from the lending group, and the Company pays an annual facility fee (currently 0.125%).  Both the spread and the facility fee are dependent on the Company’s senior unsecured credit rating.  The Company did not borrow any amounts under its revolving credit facility during the quarter ended March 31, 2021.

On November 4, 2019, the Company increased the maximum aggregate amount outstanding for its commercial paper program from $500.0 million to $1.0 billion.  The notes will be sold under customary terms in the United States commercial paper note market subject to market conditions and will rank pari passu with all of the Company’s other unsecured senior indebtedness.  The notes bear interest at various floating rates with a weighted average interest rate of 0.30% for the quarter ended March 31, 2021 and a weighted average maturity of 69 days as of March 31, 2021.  The weighted average amount outstanding for the quarter ended March 31, 2021 was approximately $457.3 million.

The Company limits its utilization of the revolving credit facility in order to maintain liquidity to support its $1.0 billion commercial paper program along with certain other obligations.  The following table presents the availability on the Company’s unsecured revolving credit facility as of March 31, 2021 (amounts in thousands):

	March 31, 2021
Unsecured revolving credit facility commitment	$	2,500,000
Commercial paper balance outstanding		(430,000	)
Unsecured revolving credit facility balance outstanding		—
Other restricted amounts		(100,699	)
Unsecured revolving credit facility availability	$	1,969,301

Other

The following table summarizes the Company’s total debt extinguishment costs recorded as additional interest expense during the quarter ended March 31, 2021 (amounts in thousands):

	March 31, 2021
Write-offs of unamortized deferred financing costs	$	264

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Derivative and Other Fair Value Instruments

3 Months Ended

Mar. 31, 2021

Fair Value Disclosures [Abstract]

Derivative and Other Fair Value Instruments

10. Derivative and Other Fair Value Instruments

The valuation of financial instruments requires the Company to make estimates and judgments that affect the fair value of the instruments.  The Company, where possible, bases the fair values of its financial instruments, including its derivative instruments, on listed market prices and third-party quotes.  Where these are not available, the Company bases its estimates on current instruments with similar terms and maturities or on other factors relevant to the financial instruments.

In the normal course of business, the Company is exposed to the effect of interest rate changes.  The Company may seek to manage these risks by following established risk management policies and procedures including the use of derivatives to hedge interest rate risk on debt instruments.  The Company may also use derivatives to manage commodity prices in the daily operations of the business.

A three-level valuation hierarchy exists for disclosure of fair value measurements.  The valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date.  A financial instrument’s categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement.  The three levels are defined as follows:

• Level 1 – Inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets.

• Level 2 – Inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument.

• Level 3 – Inputs to the valuation methodology are unobservable and significant to the fair value measurement.

The Company’s derivative positions are valued using models developed by the respective counterparty as well as models applied internally by the Company that use as their inputs readily observable market parameters (such as forward yield curves and credit default swap data).  The following table summarizes the inputs to the valuations for each type of fair value measurement:

Fair Value Measurement Type	Valuation Inputs
Employee holdings (other than Common Shares) within the supplemental executive retirement plan (the “SERP”)	Quoted market prices for identical assets. These holdings are included in other assets and other liabilities on the consolidated balance sheets.
Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners	Quoted market price of Common Shares.
Mortgage notes payable and private unsecured debt (including its commercial paper and line of credit, if applicable)	Indicative rates provided by lenders of similar loans.
Public unsecured notes	Quoted market prices for each underlying issuance.

The fair values of the Company’s financial instruments (other than mortgage notes payable, unsecured notes, commercial paper, line of credit and derivative instruments), including cash and cash equivalents and other financial instruments, approximate their carrying or contract value.  The following table provides a summary of the carrying and fair values for the Company’s mortgage notes payable and unsecured debt (including its commercial paper and line of credit, if applicable) at March 31, 2021 and December 31, 2020, respectively (amounts in thousands):

	March 31, 2021				December 31, 2020
	Carrying Value		Estimated Fair Value (Level 2)		Carrying Value		Estimated Fair Value (Level 2)
Mortgage notes payable, net	$	2,270,700	$	2,271,926	$	2,293,890	$	2,313,263
Unsecured debt, net		5,766,856		6,313,039		5,750,366		6,686,612
Total debt, net	$	8,037,556	$	8,584,965	$	8,044,256	$	8,999,875

The following tables provide a summary of the fair value measurements for each major category of assets and liabilities measured at fair value on a recurring basis and the location within the accompanying consolidated balance sheets at March 31, 2021 and December 31, 2020, respectively (amounts in thousands):

				Fair Value Measurements at Reporting Date Using
Description	Balance Sheet Location	3/31/2021		Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets
Supplemental Executive Retirement Plan	Other Assets	$	154,846	$	154,846	$	—	$	—
Liabilities
Supplemental Executive Retirement Plan	Other Liabilities	$	154,846	$	154,846	$	—	$	—
Redeemable Noncontrolling Interests –
Operating Partnership/Redeemable
Limited Partners	Mezzanine	$	409,523	$	—	$	409,523	$	—

				Fair Value Measurements at Reporting Date Using
Description	Balance Sheet Location	12/31/2020		Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets
Supplemental Executive Retirement Plan	Other Assets	$	160,293	$	160,293	$	—	$	—
Liabilities
Supplemental Executive Retirement Plan	Other Liabilities	$	160,293	$	160,293	$	—	$	—
Redeemable Noncontrolling Interests –
Operating Partnership/Redeemable
Limited Partners	Mezzanine	$	338,951	$	—	$	338,951	$	—

The following tables provide a summary of the effect of cash flow hedges on the Company’s accompanying consolidated statements of operations and comprehensive income for the quarters ended March 31, 2021 and 2020, respectively (amounts in thousands):

	Effective Portion
March 31, 2021 Type of Cash Flow Hedge	Amount of Gain/(Loss) Recognized in OCI on Derivative		Location of Gain/(Loss) Reclassified from Accumulated OCI into Income	Amount of Gain/(Loss) Reclassified from Accumulated OCI into Income
Derivatives designated as hedging instruments:
Interest Rate Contracts:
Forward Starting Swaps	$	—	Interest expense	$	(2,303	)
Total	$	—		$	(2,303	)

	Effective Portion
March 31, 2020 Type of Cash Flow Hedge	Amount of Gain/(Loss) Recognized in OCI on Derivative			Location of Gain/(Loss) Reclassified from Accumulated OCI into Income	Amount of Gain/(Loss) Reclassified from Accumulated OCI into Income
Derivatives designated as hedging instruments:
Interest Rate Contracts:
Forward Starting Swaps	$	(967	)	Interest expense	$	(5,634	)
Total	$	(967	)		$	(5,634	)

As of March 31, 2021 and December 31, 2020, there were approximately $41.4 million and $43.7 million in deferred losses, net, included in accumulated other comprehensive income (loss), respectively, related to derivative instruments, of which an estimated $10.3 million may be recognized as additional interest expense during the twelve months ending March 31, 2022.

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Earnings Per Share and Earnings Per Unit

3 Months Ended

Mar. 31, 2021

Earnings Per Share [Abstract]

Earnings Per Share And Earnings Per Unit

11. Earnings Per Share and Earnings Per Unit

Equity Residential

The following tables set forth the computation of net income per share – basic and net income per share – diluted for the Company (amounts in thousands except per share amounts):

	Quarter Ended March 31,
	2021			2020
Numerator for net income per share – basic:
Net income	$	60,364		$	332,671
Allocation to Noncontrolling Interests – Operating Partnership		(2,143	)		(11,535	)
Net (income) loss attributable to Noncontrolling    Interests – Partially Owned Properties		(682	)		(12,530	)
Preferred distributions		(773	)		(773	)
Numerator for net income per share – basic	$	56,766		$	307,833
Numerator for net income per share – diluted:
Net income	$	60,364		$	332,671
Net (income) loss attributable to Noncontrolling    Interests – Partially Owned Properties		(682	)		(12,530	)
Preferred distributions		(773	)		(773	)
Numerator for net income per share – diluted	$	58,909		$	319,368
Denominator for net income per share – basic and diluted:
Denominator for net income per share – basic		372,280			371,582
Effect of dilutive securities:
OP Units		13,050			13,004
Long-term compensation shares/units		1,586			2,363
Denominator for net income per share – diluted		386,916			386,949
Net income per share – basic	$	0.15		$	0.83
Net income per share – diluted	$	0.15		$	0.83

ERP Operating Limited Partnership

The following tables set forth the computation of net income per Unit – basic and net income per Unit – diluted for the Operating Partnership (amounts in thousands except per Unit amounts):

	Quarter Ended March 31,
	2021			2020
Numerator for net income per Unit – basic and diluted:
Net income	$	60,364		$	332,671
Net (income) loss attributable to Noncontrolling    Interests – Partially Owned Properties		(682	)		(12,530	)
Allocation to Preference Units		(773	)		(773	)
Numerator for net income per Unit – basic and diluted	$	58,909		$	319,368
Denominator for net income per Unit – basic and diluted:
Denominator for net income per Unit – basic		385,330			384,586
Effect of dilutive securities:
Dilution for Units issuable upon assumed exercise/vesting    of the Company’s long-term compensation shares/units		1,586			2,363
Denominator for net income per Unit – diluted		386,916			386,949
Net income per Unit – basic	$	0.15		$	0.83
Net income per Unit – diluted	$	0.15		$	0.83

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2021

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

12. Commitments and Contingencies

The Company, as an owner of real estate, is subject to various Federal, state and local laws, including, but not limited to, rent regulations and environmental laws.  Compliance by the Company with existing laws has not had a material adverse effect on the Company.  However, the Company cannot predict the impact of new or changed laws or regulations, whether related to COVID-19 or otherwise, on its current properties or on properties that it may acquire in the future.  

The Company does not believe there is any litigation pending or threatened against it that, individually or in the aggregate, may reasonably be expected to have a material adverse effect on the Company.

As of March 31, 2021, the Company has two wholly owned projects and one partially owned project totaling 824 apartment units in various stages of development with remaining commitments to fund of approximately $126.8 million (inclusive of applicable construction mortgage and joint venture partner obligations) and estimated completion dates ranging through December 31, 2021.

As of March 31, 2021, the Company has two joint venture agreements with third-party partners for the consolidated development of multifamily rental properties, one of which is currently under construction as noted above.  The development commitment to fund the project under construction is included in the development funding totals above.  The joint venture agreements with each partner include a buy-sell provision that provides the right, but not the obligation, for the Company to acquire each respective partner’s interests or sell its interests at any time following the occurrence of certain pre-defined events described in the joint venture agreements.  See Note 6 for additional discussion.

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Reportable Segments

3 Months Ended

Mar. 31, 2021

Segment Reporting [Abstract]

Reportable Segments

13. Reportable Segments

Operating segments are defined as components of an enterprise that engage in business activities from which they may earn revenues and incur expenses and about which discrete financial information is available that is evaluated regularly by the chief operating decision maker.  The chief operating decision maker decides how resources are allocated and assesses performance on a recurring basis at least quarterly.

The Company’s primary business is the acquisition, development and management of multifamily residential properties, which includes the generation of rental and other related income through the leasing of apartment units to residents.  The chief operating decision maker evaluates the Company’s operating performance geographically by market and both on a same store and non-same store basis.  While the Company does maintain a non-residential presence, it accounts for approximately 3.8% of total revenues for the quarter ended March 31, 2021 and is designed as an amenity for our residential residents.  The chief operating decision maker evaluates the performance of each property on a consolidated residential and non-residential basis.  The Company’s geographic consolidated same store operating segments represent its reportable segments.

The Company’s development activities are other business activities that do not constitute an operating segment and as such, have been aggregated in the “Other” category in the tables presented below.

All revenues are from external customers and there is no customer who contributed 10% or more of the Company’s total revenues during the quarters ended March 31, 2021 and 2020, respectively.

The primary financial measure for the Company’s rental real estate segment is net operating income (“NOI”), which represents rental income less: 1) property and maintenance expense and 2) real estate taxes and insurance expense (all as reflected in the accompanying consolidated statements of operations and comprehensive income).  The Company believes that NOI is helpful to investors as a supplemental measure of its operating performance because it is a direct measure of the actual operating results of the Company’s apartment properties.  Revenues for all leases are reflected on a straight-line basis in accordance with GAAP for the current and comparable periods.

The following table presents a reconciliation of NOI from our rental real estate for the quarters ended March 31, 2021 and 2020, respectively (amounts in thousands):

	Quarter Ended March 31,
	2021			2020
Rental income	$	597,602		$	682,305
Property and maintenance expense		(117,054	)		(115,816	)
Real estate taxes and insurance expense		(103,470	)		(97,732	)
Total operating expenses		(220,524	)		(213,548	)
Net operating income	$	377,078		$	468,757

The following tables present NOI for each segment from our rental real estate for the quarters ended March 31, 2021 and 2020, respectively, as well as total assets and capital expenditures at March 31, 2021 (amounts in thousands):

	Quarter Ended March 31, 2021							Quarter Ended March 31, 2020
	Rental Income		Operating Expenses		NOI			Rental Income		Operating Expenses		NOI
Same store (1)
Los Angeles	$	116,345	$	39,201	$	77,144		$	126,495	$	38,837	$	87,658
Orange County		25,841		6,336		19,505			26,695		6,172		20,523
San Diego		18,740		4,639		14,101			18,777		4,585		14,192
Subtotal - Southern California		160,926		50,176		110,750			171,967		49,594		122,373
San Francisco		105,332		33,275		72,057			125,102		31,796		93,306
Washington D.C.		99,117		33,321		65,796			104,718		32,103		72,615
New York		99,754		53,076		46,678			118,025		50,909		67,116
Seattle		61,709		19,799		41,910			68,869		18,683		50,186
Boston		56,606		19,374		37,232			63,683		18,327		45,356
Denver		9,344		3,031		6,313			9,657		2,789		6,868
Total same store		592,788		212,052		380,736			662,021		204,201		457,820
Non-same store/other (2) (3)
Non-same store		4,660		1,445		3,215			4,163		1,246		2,917
Other (3)		154		7,027		(6,873	)		16,121		8,101		8,020
Total non-same store/other		4,814		8,472		(3,658	)		20,284		9,347		10,937
Totals	$	597,602	$	220,524	$	377,078		$	682,305	$	213,548	$	468,757

(1) For the quarters ended March 31, 2021 and 2020, same store primarily includes all properties acquired or completed that were stabilized prior to January 1, 2020, less properties subsequently sold, which represented 77,060 apartment units.

(2) For the quarters ended March 31, 2021 and 2020, non-same store primarily includes properties acquired after January 1, 2020, plus any properties in lease-up and not stabilized as of January 1, 2020.

(3) Other includes development, other corporate operations and operations prior to disposition for properties sold.

	Quarter Ended March 31, 2021
	Total Assets		Capital Expenditures
Same store (1)
Los Angeles	$	3,220,144	$	4,666
Orange County		384,585		1,056
San Diego		240,071		679
Subtotal - Southern California		3,844,800		6,401
San Francisco		3,472,556		3,936
Washington D.C.		3,323,572		6,325
New York		3,971,142		5,993
Seattle		2,010,532		2,139
Boston		1,742,381		3,469
Denver		507,264		355
Total same store		18,872,247		28,618
Non-same store/other (2) (3)
Non-same store		297,717		62
Other (3)		999,051		(1	)
Total non-same store/other		1,296,768		61
Totals	$	20,169,015	$	28,679

(1) Same store primarily includes all properties acquired or completed that were stabilized prior to January 1, 2020, less properties subsequently sold, which represented 77,060 apartment units.

(2) Non-same store primarily includes properties acquired after January 1, 2020, plus any properties in lease-up and not stabilized as of January 1, 2020.

(3) Other includes development, other corporate operations and capital expenditures for properties sold.

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Subsequent Events

3 Months Ended

Mar. 31, 2021

Subsequent Events [Abstract]

Subsequent Events

14. Subsequent Events

Subsequent to March 31, 2021, the Company:

• Sold two properties consisting of 333 apartment units for $123.8 million.

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Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2021

Summary Of Significant Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X.  Accordingly, they do not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.  In the opinion of management, all adjustments (consisting of normal recurring accruals) and certain reclassifications considered necessary for a fair presentation have been included.  Operating results for the quarter ended March 31, 2021 are not necessarily indicative of the results that may be expected for the year ending December 31, 2021.

In preparation of the Company’s financial statements in conformity with accounting principles generally accepted in the United States, management makes estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of

contingent assets and liabilities at the date of the financial statements as well as the reported amounts of revenues and expenses during the reporting period.  Actual results could differ from these estimates.  In response to the COVID-19 pandemic, management evaluated whether its estimates, such as lease collectibility (discussed below in Recently Adopted Accounting Pronouncements) and impairment, required revised approaches and generally concluded that no revisions were necessary at this time.

The balance sheets at December 31, 2020 have been derived from the audited financial statements at that date but do not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.

For further information, including definitions of capitalized terms not defined herein, refer to the consolidated financial statements and footnotes thereto included in the Company’s and the Operating Partnership’s Annual Report on Form 10-K for the year ended December 31, 2020.

Income and Other Taxes

Income and Other Taxes

EQR has elected to be taxed as a REIT.  This, along with the nature of the operations of its operating properties, resulted in no provision for federal income taxes at the EQR level.  In addition, ERPOP generally is not liable for federal income taxes as the partners recognize their allocable share of income or loss in their tax returns; therefore no provision for federal income taxes has been made at the ERPOP level.  Historically, the Company has generally only incurred certain state and local income, excise and franchise taxes.  The Company has elected taxable REIT subsidiary (“TRS”) status for certain of its corporate subsidiaries and, as a result, these entities will incur both federal and state income taxes on any taxable income of such entities after consideration of any net operating losses.

On March 27, 2020, the President signed into law the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”).  The CARES Act was enacted to provide economic relief to companies and individuals in response to the COVID-19 pandemic.  Included in the CARES Act were tax provisions which increased allowable interest expense deductions for 2019 and 2020 and increased the ability for taxpayers to use net operating losses.  These provisions did not result in a material impact to the Company’s taxable income or tax liabilities.

Recently Issued and Adopted Accounting Pronouncements

Recently Issued Accounting Pronouncements

In August 2020, the Financial Accounting Standards Board (“FASB”) issued an amendment to the debt and equity financial instruments standards which simplifies the accounting for convertible instruments and accounting for contracts in an entity’s own equity.  Instead of being required to assess whether an equity contract permits settlement in unregistered shares, which may require a legal analysis under the securities laws, entities will only analyze whether cash settlements are explicitly required when registered shares are unavailable.  As a result, such contracts may be classified in permanent rather than mezzanine equity, which may affect the way the Company’s OP Units are presented on its financial statements.  The update is effective for the Company beginning on January 1, 2022 as the Company did not early adopt the standard as allowed on January 1, 2021.  The Company is currently evaluating the impact of adopting the new standard on its consolidated results of operations and financial position.

In March 2020, the FASB issued an amendment to the reference rate reform standard which provides the option for a limited period of time to ease the potential burden in accounting for, or recognizing the effects of, reference rate reform on contract modifications and hedge accounting.  An example of such reform is the expected market transition from the London Interbank Offered Rate (“LIBOR”) and other interbank offered rates to alternative reference rates.  Entities that make this optional expedient election would not have to remeasure the contracts at the modification date or reassess the accounting treatment if certain criteria are met and would continue applying hedge accounting for relationships affected by reference rate reform.  The new standard was effective for the Company upon issuance and elections can be made through December 31, 2022.  The Company is currently evaluating its options with regards to existing contracts and hedging relationships and the impact of adopting this update on its consolidated results of operations and financial position.

Recently Adopted Accounting Pronouncements

In April 2020, a FASB staff question and answer document was issued which intended to reduce the challenges of evaluating the enforceable rights and obligations of leases for concessions granted to lessees in response to the COVID-19 pandemic.  We elected not to evaluate whether qualifying concessions provided by the Company in response to the COVID-19 pandemic are a lease modification, subject to the criteria that the total payments under the amended lease cannot result in a substantial increase in the rights of the lessor or obligations of the lessee.  We also elected to treat the concessions as though they were contemplated as part of the existing contracts and therefore will not apply lease modification rules to the qualifying lease concession amendments.  As such, deferrals deemed collectible are recorded as rental receivables with no change to timing of rental revenues and deferrals deemed non-collectible and abatements reduce rental revenues in the deferral/abatement period and cause rental revenues to effectively follow a cash basis related to the changes.  The accounting elections provided by the FASB mainly apply to the Company’s non-residential leases and the majority of the amendments will not require a straight-line adjustment.  See Note 8 for additional discussion.

In June 2016, the FASB issued a standard which requires companies to adopt a new approach for estimating credit losses on certain types of financial instruments, such as trade and other receivables and loans.  The standard requires entities to estimate a lifetime expected credit loss for most financial instruments, including trade receivables.  In November 2018, the FASB issued an amendment excluding operating lease receivables accounted for under the lease standard from the scope of the credit losses standard.  The Company adopted this standard as required effective January 1, 2020 and it did not have a material effect on its consolidated results of operations and financial position.

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Business (Tables)

3 Months Ended

Mar. 31, 2021

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Ownership Breakdown

The ownership breakdown includes (table does not include various uncompleted development properties):

	Properties		Apartment Units
Wholly Owned Properties		287		74,328
Master-Leased Property – Consolidated		1		162
Partially Owned Properties – Consolidated		16		3,399
		304		77,889

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Equity, Capital and Other Interests (Tables)

3 Months Ended

Mar. 31, 2021

Class Of Stock [Line Items]

Changes in Issued and Outstanding Common Shares and Units

The following table presents the changes in the Company’s issued and outstanding Common Shares and Units for the quarters ended March 31, 2021 and 2020:

	2021			2020
Common Shares
Common Shares outstanding at January 1,		372,302,000			371,670,884
Common Shares Issued:
Conversion of OP Units		—			41,945
Exercise of share options		506,342			214,521
Employee Share Purchase Plan (ESPP)		32,572			13,606
Restricted share grants, net		76,499			163,098
Common Shares outstanding at March 31,		372,917,413			372,104,054
Units
Units outstanding at January 1,		13,858,073			13,731,315
Restricted unit grants, net		184,301			243,063
Conversion of OP Units to Common Shares		—			(41,945	)
Units outstanding at March 31,		14,042,374			13,932,433
Total Common Shares and Units outstanding at March 31,		386,959,787			386,036,487
Units Ownership Interest in Operating Partnership		3.6	%		3.6	%

Changes in Redemption Value of Redeemable Noncontrolling Interests - Operating Partnership/Redeemable Limited Partners

The following table presents the changes in the redemption value of the Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners for the quarters ended March 31, 2021 and 2020, respectively (amounts in thousands):

	2021			2020
Balance at January 1,	$	338,951		$	463,400
Change in market value		72,956			(111,449	)
Change in carrying value		(2,384	)		1,391
Balance at March 31,	$	409,523		$	353,342

Issued and Outstanding Preferred Shares and Preference Units

The following table presents the Company’s issued and outstanding Preferred Shares/Preference Units as of March 31, 2021 and December 31, 2020:

				Amounts in thousands
		Annual
	Call	Dividend Per		March 31,		December 31,
	Date (1)	Share/Unit (2)		2021		2020
Preferred Shares/Preference Units of beneficial interest, $0.01 par value;    100,000,000 shares authorized:
8.29% Series K Cumulative Redeemable Preferred Shares/Preference    Units; liquidation value $50 per share/unit; 745,600 shares/units issued    and outstanding as of March 31, 2021 and December 31, 2020	12/10/26	$	4.145	$	37,280	$	37,280
				$	37,280	$	37,280

(1) On or after the call date, redeemable Preferred Shares/Preference Units may be redeemed for cash at the option of the Company or the Operating Partnership, respectively, in whole or in part, at a redemption price equal to the liquidation price per share/unit, plus accrued and unpaid distributions, if any.

(2) Dividends on Preferred Shares/Preference Units are payable quarterly.

ERPOP [Member]

Class Of Stock [Line Items]

Changes in Issued and Outstanding Common Shares and Units

The following table presents the changes in the Operating Partnership’s issued and outstanding General Partner Units and Limited Partner Units for the quarters ended March 31, 2021 and 2020:

	2021			2020
General and Limited Partner Units
General and Limited Partner Units outstanding at January 1,		386,160,073			385,402,199
Issued to General Partner:
Exercise of EQR share options		506,342			214,521
EQR’s Employee Share Purchase Plan (ESPP)		32,572			13,606
EQR’s restricted share grants, net		76,499			163,098
Issued to Limited Partners:
Restricted unit grants, net		184,301			243,063
General and Limited Partner Units outstanding at March 31,		386,959,787			386,036,487
Limited Partner Units
Limited Partner Units outstanding at January 1,		13,858,073			13,731,315
Limited Partner restricted unit grants, net		184,301			243,063
Conversion of Limited Partner OP Units to EQR Common Shares		—			(41,945	)
Limited Partner Units outstanding at March 31,		14,042,374			13,932,433
Limited Partner Units Ownership Interest in Operating Partnership		3.6	%		3.6	%

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Real Estate (Tables)

3 Months Ended

Mar. 31, 2021

Real Estate [Abstract]

Summary of Carrying Amounts of Investment in Real Estate

The following table summarizes the carrying amounts for the Company’s investment in real estate (at cost) as of March 31, 2021 and December 31, 2020 (amounts in thousands):

	March 31, 2021			December 31, 2020
Land	$	5,785,367		$	5,785,367
Depreciable property:
Buildings and improvements		18,476,711			18,464,484
Furniture, fixtures and equipment		1,989,219			1,970,033
In-Place lease intangibles		486,137			486,137
Projects under development:
Land		23,531			23,531
Construction-in-progress		452,479			387,603
Land held for development:
Land		46,160			46,160
Construction-in-progress		42,200			40,010
Investment in real estate		27,301,804			27,203,325
Accumulated depreciation		(8,059,619	)		(7,859,657	)
Investment in real estate, net	$	19,242,185		$	19,343,668

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Commitments to Acquire/Dispose of Real Estate (Tables)

3 Months Ended

Mar. 31, 2021

Commitments To Acquire Dispose Of Real Estate [Abstract]

Acquired Properties From Unaffiliated Parties

The Company has entered into an agreement to acquire the following (purchase price in thousands):

	Properties		Apartment Units		Purchase Price
Rental Properties - Consolidated		1		280	$	95,200
Total		1		280	$	95,200

Agreements to Dispose

The Company has entered into separate agreements to dispose of the following (sales price and net book value in thousands):

	Properties		Apartment Units		Sales Price		Net Book Value at March 31, 2021
Rental Properties - Consolidated		2		340	$	240,000	$	139,411
Total		2		340	$	240,000	$	139,411

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Investments in Partially Owned Entities (Tables)

3 Months Ended

Mar. 31, 2021

Investments In Partially Owned Entities [Abstract]

Summary of Company's Investment in Unconsolidated Entities

The following table and information summarizes the Company’s investments in unconsolidated entities, which are accounted for under the equity method of accounting as the requirements for consolidation are not met, as of March 31, 2021 and December 31, 2020 (amounts in thousands except for ownership percentage):

	March 31, 2021			December 31, 2020			Ownership Percentage
Investments in Unconsolidated Entities:
Operating Property (VIE) (1)	$	37,731		$	38,288		33.3%
Real Estate Technology (2)		16,036			14,866		Varies
Other		(493	)		(372	)	Varies
Investments in Unconsolidated Entities	$	53,274		$	52,782

(1) Represents an unconsolidated interest in an entity that owns the land underlying one of the consolidated joint venture properties noted above and owns and operates a related parking facility.  The joint venture, as a limited partner, does not have substantive kick-out or participating rights in the entity.  As a result, the entity qualifies as a VIE.  The joint venture does not have a controlling financial interest in the VIE and is not the VIE’s primary beneficiary.  The joint venture does not have the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance or the obligation to absorb losses or the right to receive benefits from the VIE that could potentially be significant to the VIE.  As a result, the entity that owns the land and owns and operates the parking facility is unconsolidated and recorded using the equity method of accounting.

(2) Represents unconsolidated investments in five separate real estate technology funds/companies. 

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Restricted Deposits (Tables)

3 Months Ended

Mar. 31, 2021

Deposits Restricted [Abstract]

Restricted Deposits

The following table presents the Company’s restricted deposits as of March 31, 2021 and December 31, 2020 (amounts in thousands):

	March 31, 2021		December 31, 2020
Mortgage escrow deposits:
Replacement reserves	$	10,182	$	9,877
Mortgage principal reserves/sinking funds		15,360		14,168
Mortgage escrow deposits		25,542		24,045
Restricted cash:
Earnest money on pending acquisitions		3,500		—
Restricted deposits on real estate investments		302		307
Resident security and utility deposits		31,675		31,412
Other		1,364		1,373
Restricted cash		36,841		33,092
Restricted deposits	$	62,383	$	57,137

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Leases (Tables)

3 Months Ended

Mar. 31, 2021

Leases [Abstract]

Summary of Lease Income Types Relating to Lease Payments Along With the Total Other Rental Income

The following table presents the lease income types relating to lease payments for residential and non-residential leases along with the total other rental income for the quarters ended March 31, 2021 and 2020 (amounts in thousands):

	Quarter Ended March 31, 2021								Quarter Ended March 31, 2020
Income Type	Residential Leases			Non-Residential Leases		Total			Residential Leases			Non-Residential Leases			Total
Residential and non-residential rent	$	539,655		$	15,839	$	555,494		$	612,480		$	18,094		$	630,574
Utility recoveries (RUBS income) (1)		17,954			178		18,132			17,418			228			17,646
Parking rent		9,734			267		10,001			9,833			97			9,930
Other lease revenue (2)		(10,262	)		609		(9,653	)		(213	)		(280	)		(493	)
Total lease revenue	$	557,081		$	16,893		573,974		$	639,518		$	18,139			657,657
Parking revenue							5,433									6,783
Other revenue							18,195									17,865
Total other rental income (3)							23,628									24,648
Rental income						$	597,602								$	682,305

(1) RUBS income primarily consists of variable payments representing the recovery of utility costs from residents.

(2) Other lease revenue consists of the revenue adjustment related to bad debt and other miscellaneous lease revenue.

(3) Other rental income is accounted for under the revenue recognition standard.

Summary of Residential and Non-Residential Accounts Receivable and Straight-Line Receivable Balances

The economic impact of the pandemic on a subset of our residents and tenants has led to elevated levels of bad debt.  We continue to work with our residents and tenants on payment plans and collections and our bad debt allowance policies remain consistent.

The following table presents residential and non-residential accounts receivable and straight-line receivable balances for the Company’s properties as of March 31, 2021 and December 31, 2020 (amounts in thousands):

	Residential							Non-Residential
Balance Sheet (Other assets):	March 31, 2021				December 31, 2020			March 31, 2021			December 31, 2020
Resident/tenant accounts receivable balances	$	37,248			$	30,856		$	6,847		$	7,598
Allowance for doubtful accounts		(31,799	)			(24,021	)		(5,724	)		(6,527	)
Net receivable balances	$	5,449		(1)	$	6,835		$	1,123		$	1,071
Straight-line receivable balances	$	25,360			$	19,992		$	13,409		$	13,413

(1) The Company held residential security deposits approximating 35.4% of the net receivable balance at March 31, 2021.

Summary of Residential Bad Debt for Company's Properties

The following table presents residential bad debt for the Company’s properties for the quarters ended March 31, 2021 and 2020 (amounts in thousands):

	Quarter Ended March 31,
Income Statement (Rental income):		2021			2020
Bad debt, net	$	13,693		$	3,784
% of rental income		2.4	%		0.6	%

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Debt (Tables)

3 Months Ended

Mar. 31, 2021

Debt Instrument [Line Items]

Summary of Mortgage Notes Payable Activity

The following table summarizes the Company’s mortgage notes payable activity for the quarter ended March 31, 2021 (amounts in thousands):

	Mortgage notes payable, net as of December 31, 2020		Proceeds			Lump sum payoffs			Scheduled principal repayments			Amortization of premiums/ discounts		Amortization of deferred financing costs, net (1)		Mortgage notes payable, net as of March 31, 2021
Fixed Rate Debt:
Secured – Conventional	$	1,901,091	$	28,500	(2)	$	(28,200	)	$	(1,871	)	$	378	$	19	$	1,899,917
Floating Rate Debt:
Secured – Conventional		31,494		8,992			—			—			—		60		40,546
Secured – Tax Exempt		361,305		—			(31,680	)		—			306		306		330,237
Floating Rate Debt		392,799		8,992			(31,680	)		—			306		366		370,783
Total	$	2,293,890	$	37,492		$	(59,880	)	$	(1,871	)	$	684	$	385	$	2,270,700

(1) Represents amortization of deferred financing costs, net of debt financing costs.  

(2) Obtained 3.58% fixed rate mortgage debt maturing on March 1, 2031.

Summary of Notes Activity

The following table summarizes the Company’s notes activity for the quarter ended March 31, 2021 (amounts in thousands):

	Notes, net as of December 31, 2020		Proceeds		Lump sum payoffs		Realized/unrealized (gain) loss on derivative instruments		Amortization of premiums/ discounts		Amortization of deferred financing costs, net (1)		Notes, net as of March 31, 2021
Fixed Rate Debt:
Unsecured – Public	$	5,335,536	$	—	$	—	$	—	$	610	$	957	$	5,337,103

(1) Represents amortization of deferred financing costs, net of debt financing costs.

Schedule of Unsecured Revolving Credit Facility

The following table presents the availability on the Company’s unsecured revolving credit facility as of March 31, 2021 (amounts in thousands):

	March 31, 2021
Unsecured revolving credit facility commitment	$	2,500,000
Commercial paper balance outstanding		(430,000	)
Unsecured revolving credit facility balance outstanding		—
Other restricted amounts		(100,699	)
Unsecured revolving credit facility availability	$	1,969,301

Schedule of Debt Extinguishment Costs Recorded as Additional Interest Expense

The following table summarizes the Company’s total debt extinguishment costs recorded as additional interest expense during the quarter ended March 31, 2021 (amounts in thousands):

	March 31, 2021
Write-offs of unamortized deferred financing costs	$	264

Mortgages [Member]

Debt Instrument [Line Items]

Summary of Certain Interest Rate and Maturity Date Information

The following table summarizes certain interest rate and maturity date information as of and for the quarter ended March 31, 2021:

	March 31, 2021
Interest Rate Ranges	0.05% - 4.21%
Weighted Average Interest Rate	3.18%
Maturity Date Ranges	2022-2061

Notes [Member]

Debt Instrument [Line Items]

Summary of Certain Interest Rate and Maturity Date Information

The following table summarizes certain interest rate and maturity date information as of and for the quarter ended March 31, 2021:

	March 31, 2021
Interest Rate Ranges	2.50% - 7.57%
Weighted Average Interest Rate	3.77%
Maturity Date Ranges	2023-2047

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Derivative and Other Fair Value Instruments (Tables)

3 Months Ended

Mar. 31, 2021

Fair Value Disclosures [Abstract]

Summary of Valuations for Each Type of Fair Value Measurement

The following table summarizes the inputs to the valuations for each type of fair value measurement:

Fair Value Measurement Type	Valuation Inputs
Employee holdings (other than Common Shares) within the supplemental executive retirement plan (the “SERP”)	Quoted market prices for identical assets. These holdings are included in other assets and other liabilities on the consolidated balance sheets.
Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners	Quoted market price of Common Shares.
Mortgage notes payable and private unsecured debt (including its commercial paper and line of credit, if applicable)	Indicative rates provided by lenders of similar loans.
Public unsecured notes	Quoted market prices for each underlying issuance.

Summary of Carrying and Fair Values of Financial Instruments

The following table provides a summary of the carrying and fair values for the Company’s mortgage notes payable and unsecured debt (including its commercial paper and line of credit, if applicable) at March 31, 2021 and December 31, 2020, respectively (amounts in thousands):

	March 31, 2021				December 31, 2020
	Carrying Value		Estimated Fair Value (Level 2)		Carrying Value		Estimated Fair Value (Level 2)
Mortgage notes payable, net	$	2,270,700	$	2,271,926	$	2,293,890	$	2,313,263
Unsecured debt, net		5,766,856		6,313,039		5,750,366		6,686,612
Total debt, net	$	8,037,556	$	8,584,965	$	8,044,256	$	8,999,875

Summary of Fair Value Measurements for Each Major Category of Assets and Liabilities Measured at Fair Value on Recurring Basis

The following tables provide a summary of the fair value measurements for each major category of assets and liabilities measured at fair value on a recurring basis and the location within the accompanying consolidated balance sheets at March 31, 2021 and December 31, 2020, respectively (amounts in thousands):

				Fair Value Measurements at Reporting Date Using
Description	Balance Sheet Location	3/31/2021		Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets
Supplemental Executive Retirement Plan	Other Assets	$	154,846	$	154,846	$	—	$	—
Liabilities
Supplemental Executive Retirement Plan	Other Liabilities	$	154,846	$	154,846	$	—	$	—
Redeemable Noncontrolling Interests –
Operating Partnership/Redeemable
Limited Partners	Mezzanine	$	409,523	$	—	$	409,523	$	—

				Fair Value Measurements at Reporting Date Using
Description	Balance Sheet Location	12/31/2020		Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets
Supplemental Executive Retirement Plan	Other Assets	$	160,293	$	160,293	$	—	$	—
Liabilities
Supplemental Executive Retirement Plan	Other Liabilities	$	160,293	$	160,293	$	—	$	—
Redeemable Noncontrolling Interests –
Operating Partnership/Redeemable
Limited Partners	Mezzanine	$	338,951	$	—	$	338,951	$	—

Summary of Effect of Cash Flow Hedges on the Accompanying Consolidated Statements of Operations and Comprehensive Income

The following tables provide a summary of the effect of cash flow hedges on the Company’s accompanying consolidated statements of operations and comprehensive income for the quarters ended March 31, 2021 and 2020, respectively (amounts in thousands):

	Effective Portion
March 31, 2021 Type of Cash Flow Hedge	Amount of Gain/(Loss) Recognized in OCI on Derivative		Location of Gain/(Loss) Reclassified from Accumulated OCI into Income	Amount of Gain/(Loss) Reclassified from Accumulated OCI into Income
Derivatives designated as hedging instruments:
Interest Rate Contracts:
Forward Starting Swaps	$	—	Interest expense	$	(2,303	)
Total	$	—		$	(2,303	)

	Effective Portion
March 31, 2020 Type of Cash Flow Hedge	Amount of Gain/(Loss) Recognized in OCI on Derivative			Location of Gain/(Loss) Reclassified from Accumulated OCI into Income	Amount of Gain/(Loss) Reclassified from Accumulated OCI into Income
Derivatives designated as hedging instruments:
Interest Rate Contracts:
Forward Starting Swaps	$	(967	)	Interest expense	$	(5,634	)
Total	$	(967	)		$	(5,634	)

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Earnings Per Share and Earnings Per Unit (Tables)

3 Months Ended

Mar. 31, 2021

Schedule of Calculation of Numerator and Denominator in Earnings Per Share and Earnings Per Unit

The following tables set forth the computation of net income per share – basic and net income per share – diluted for the Company (amounts in thousands except per share amounts):

	Quarter Ended March 31,
	2021			2020
Numerator for net income per share – basic:
Net income	$	60,364		$	332,671
Allocation to Noncontrolling Interests – Operating Partnership		(2,143	)		(11,535	)
Net (income) loss attributable to Noncontrolling    Interests – Partially Owned Properties		(682	)		(12,530	)
Preferred distributions		(773	)		(773	)
Numerator for net income per share – basic	$	56,766		$	307,833
Numerator for net income per share – diluted:
Net income	$	60,364		$	332,671
Net (income) loss attributable to Noncontrolling    Interests – Partially Owned Properties		(682	)		(12,530	)
Preferred distributions		(773	)		(773	)
Numerator for net income per share – diluted	$	58,909		$	319,368
Denominator for net income per share – basic and diluted:
Denominator for net income per share – basic		372,280			371,582
Effect of dilutive securities:
OP Units		13,050			13,004
Long-term compensation shares/units		1,586			2,363
Denominator for net income per share – diluted		386,916			386,949
Net income per share – basic	$	0.15		$	0.83
Net income per share – diluted	$	0.15		$	0.83

ERPOP [Member]

Schedule of Calculation of Numerator and Denominator in Earnings Per Share and Earnings Per Unit

The following tables set forth the computation of net income per Unit – basic and net income per Unit – diluted for the Operating Partnership (amounts in thousands except per Unit amounts):

	Quarter Ended March 31,
	2021			2020
Numerator for net income per Unit – basic and diluted:
Net income	$	60,364		$	332,671
Net (income) loss attributable to Noncontrolling    Interests – Partially Owned Properties		(682	)		(12,530	)
Allocation to Preference Units		(773	)		(773	)
Numerator for net income per Unit – basic and diluted	$	58,909		$	319,368
Denominator for net income per Unit – basic and diluted:
Denominator for net income per Unit – basic		385,330			384,586
Effect of dilutive securities:
Dilution for Units issuable upon assumed exercise/vesting    of the Company’s long-term compensation shares/units		1,586			2,363
Denominator for net income per Unit – diluted		386,916			386,949
Net income per Unit – basic	$	0.15		$	0.83
Net income per Unit – diluted	$	0.15		$	0.83

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Reportable Segments (Tables)

3 Months Ended

Mar. 31, 2021

Segment Reporting [Abstract]

Schedule of Reconciliation of NOI from Rental Real Estate Specific to Continuing Operations

The following table presents a reconciliation of NOI from our rental real estate for the quarters ended March 31, 2021 and 2020, respectively (amounts in thousands):

	Quarter Ended March 31,
	2021			2020
Rental income	$	597,602		$	682,305
Property and maintenance expense		(117,054	)		(115,816	)
Real estate taxes and insurance expense		(103,470	)		(97,732	)
Total operating expenses		(220,524	)		(213,548	)
Net operating income	$	377,078		$	468,757

Schedule of NOI for Each Segment from Rental Real Estate Specific to Continuing Operations

The following tables present NOI for each segment from our rental real estate for the quarters ended March 31, 2021 and 2020, respectively, as well as total assets and capital expenditures at March 31, 2021 (amounts in thousands):

	Quarter Ended March 31, 2021							Quarter Ended March 31, 2020
	Rental Income		Operating Expenses		NOI			Rental Income		Operating Expenses		NOI
Same store (1)
Los Angeles	$	116,345	$	39,201	$	77,144		$	126,495	$	38,837	$	87,658
Orange County		25,841		6,336		19,505			26,695		6,172		20,523
San Diego		18,740		4,639		14,101			18,777		4,585		14,192
Subtotal - Southern California		160,926		50,176		110,750			171,967		49,594		122,373
San Francisco		105,332		33,275		72,057			125,102		31,796		93,306
Washington D.C.		99,117		33,321		65,796			104,718		32,103		72,615
New York		99,754		53,076		46,678			118,025		50,909		67,116
Seattle		61,709		19,799		41,910			68,869		18,683		50,186
Boston		56,606		19,374		37,232			63,683		18,327		45,356
Denver		9,344		3,031		6,313			9,657		2,789		6,868
Total same store		592,788		212,052		380,736			662,021		204,201		457,820
Non-same store/other (2) (3)
Non-same store		4,660		1,445		3,215			4,163		1,246		2,917
Other (3)		154		7,027		(6,873	)		16,121		8,101		8,020
Total non-same store/other		4,814		8,472		(3,658	)		20,284		9,347		10,937
Totals	$	597,602	$	220,524	$	377,078		$	682,305	$	213,548	$	468,757

(1) For the quarters ended March 31, 2021 and 2020, same store primarily includes all properties acquired or completed that were stabilized prior to January 1, 2020, less properties subsequently sold, which represented 77,060 apartment units.

(2) For the quarters ended March 31, 2021 and 2020, non-same store primarily includes properties acquired after January 1, 2020, plus any properties in lease-up and not stabilized as of January 1, 2020.

(3) Other includes development, other corporate operations and operations prior to disposition for properties sold.

	Quarter Ended March 31, 2021
	Total Assets		Capital Expenditures
Same store (1)
Los Angeles	$	3,220,144	$	4,666
Orange County		384,585		1,056
San Diego		240,071		679
Subtotal - Southern California		3,844,800		6,401
San Francisco		3,472,556		3,936
Washington D.C.		3,323,572		6,325
New York		3,971,142		5,993
Seattle		2,010,532		2,139
Boston		1,742,381		3,469
Denver		507,264		355
Total same store		18,872,247		28,618
Non-same store/other (2) (3)
Non-same store		297,717		62
Other (3)		999,051		(1	)
Total non-same store/other		1,296,768		61
Totals	$	20,169,015	$	28,679

(1) Same store primarily includes all properties acquired or completed that were stabilized prior to January 1, 2020, less properties subsequently sold, which represented 77,060 apartment units.

(2) Non-same store primarily includes properties acquired after January 1, 2020, plus any properties in lease-up and not stabilized as of January 1, 2020.

(3) Other includes development, other corporate operations and capital expenditures for properties sold.

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Business - Additional Information (Details)	Mar. 31, 2021 State Property ApartmentUnit
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of states in which entity operates | State	9
Properties | Property	304
Apartment units | ApartmentUnit	77,889
ERPOP [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Noncontrolling interest, ownership percentage by parent	96.40%

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Business - Ownership Breakdown (Details)	Mar. 31, 2021 Property ApartmentUnit
Property/Unit schedule
Properties | Property	304
Apartment Units | ApartmentUnit	77,889
Wholly Owned Properties
Property/Unit schedule
Properties | Property	287
Apartment Units | ApartmentUnit	74,328
Master-Leased Property Consolidated
Property/Unit schedule
Properties | Property	1
Apartment Units | ApartmentUnit	162
Partially Owned Properties – Consolidated
Property/Unit schedule
Properties | Property	16
Apartment Units | ApartmentUnit	3,399

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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Provision for income tax	$ 153,000	$ 53,000
Federal [Member]
Provision for income tax	$ 0

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Equity, Capital and Other Interests - Changes in Company's Issued and Outstanding Common Shares and Units (Details) - shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Equity Capital And Other Interests [Abstract]
Common Stock, Shares, Outstanding	372,302,000	371,670,884
Common Shares Issued:
Conversion of OP Units		41,945
Exercise of share options	506,342	214,521
Employee Share Purchase Plan (ESPP)	32,572	13,606
Restricted share grants, net	76,499	163,098
Common Stock, Shares, Outstanding	372,917,413	372,104,054
Units
Total Units Outstanding	13,858,073	13,731,315
Restricted unit grants, net	184,301	243,063
Conversion of OP Units to Common Shares		(41,945)
Total Units Outstanding	14,042,374	13,932,433
Common Shares And Units Outstanding	386,959,787	386,036,487
Units Ownership Interest in Operating Partnership	3.60%	3.60%

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Equity, Capital and Other Interests - Changes in Operating Partnership's Issued and Outstanding General Partner Units and Limited Partner Units (Details) - shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
General and Limited Partner Units
Exercise of share options	506,342	214,521
Employee Share Purchase Plan (ESPP)	32,572	13,606
Restricted share grants, net	76,499	163,098
Restricted unit grants, net	184,301	243,063
Common Shares And Units Outstanding	386,959,787	386,036,487
Limited Partner Units
Total Units Outstanding	13,858,073	13,731,315
Restricted unit grants, net	184,301	243,063
Conversion of Limited Partner OP Units to EQR Common Shares		(41,945)
Total Units Outstanding	14,042,374	13,932,433
Units Ownership Interest in Operating Partnership	3.60%	3.60%
ERPOP [Member]
General and Limited Partner Units
Common Shares And Units Outstanding	386,160,073	385,402,199
Exercise of share options	506,342	214,521
Employee Share Purchase Plan (ESPP)	32,572	13,606
Restricted share grants, net	76,499	163,098
Restricted unit grants, net	184,301	243,063
Common Shares And Units Outstanding	386,959,787	386,036,487
Limited Partner Units
Total Units Outstanding	13,858,073	13,731,315
Restricted unit grants, net	184,301	243,063
Conversion of Limited Partner OP Units to EQR Common Shares		(41,945)
Total Units Outstanding	14,042,374	13,932,433
Units Ownership Interest in Operating Partnership	3.60%	3.60%

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Equity, Capital and Other Interests - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Equity Capital And Other Interests [Abstract]
Redeemable noncontrolling interests - operating partnership	$ 409,523	$ 338,951	$ 353,342	$ 463,400
Preferred stock, shares authorized	100,000,000	100,000,000
Preferred stock, par or stated value per share	$ 0.01	$ 0.01

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Equity, Capital and Other Interests - Changes in Redemption Value of Redeemable Noncontrolling Interests - Operating Partnership (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Equity Capital And Other Interests [Abstract]
Redeemable Noncontrolling Interests - Operating Partnership Units	$ 338,951	$ 463,400
Change in market value of Redeemable Noncontrolling Interests - Operating Partnership	72,956	(111,449)
Change in carrying value of Redeemable Noncontrolling Interests - Operating Partnership	(2,384)	1,391
Redeemable Noncontrolling Interests - Operating Partnership Units	$ 409,523	$ 353,342

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Equity, Capital and Other Interests - Changes in Redemption Value of Redeemable Limited Partners Interest (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Equity Capital And Other Interests [Abstract]
Redeemable Limited Partners	$ 338,951	$ 463,400
Limited Partners Change In Redemption Value	72,956	(111,449)
Limited Partners Change In Carrying Value	(2,384)	1,391
Redeemable Limited Partners	$ 409,523	$ 353,342

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Equity, Capital and Other Interests - Issued and Outstanding Preferred Shares and Preference Units (Details) - ERPOP [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Class Of Stock [Line Items]
8.29% Series K Cumulative Redeemable Preferred Shares/Preference Units; liquidation value $50 per share; 745,600 shares issued and outstanding as of March 31, 2021 and December 31, 2020	$ 37,280	$ 37,280
Preferred Stock
Class Of Stock [Line Items]
Preferred Stocks Preference Units Call Date	Dec. 10, 2026
Annual Dividend Per Preferred Share Preference Unit	$ 4.145
8.29% Series K Cumulative Redeemable Preferred Shares/Preference Units; liquidation value $50 per share; 745,600 shares issued and outstanding as of March 31, 2021 and December 31, 2020	$ 37,280	$ 37,280

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Equity, Capital and Other Interests - Issued and Outstanding Preferred Shares and Preference Units (Parenthetical) (Details) - $ / shares	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Class Of Stock [Line Items]
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	100,000,000	100,000,000
Preferred Stock
Class Of Stock [Line Items]
Preferred Stock Preference Units Issued	745,600	745,600
Preferred Stock Preference Units Outstanding	745,600	745,600
Preferred Stock Preference Units Redemption Price Per Share	$ 50	$ 50
Preferred Stock Preference Units Dividend Rate Percentage	8.29%	8.29%

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Equity, Capital and Other Interests - Other - Additional Information (Details)	86 Months Ended	159 Months Ended
	Mar. 31, 2021 shares	Mar. 31, 2021 shares
Equity Capital And Other Interests [Abstract]
Additional common shares authorized	13,000,000.0	13,000,000.0
Stock repurchase program, number of shares authorized to be repurchased	13,000,000.0	13,000,000.0
Stock open market repurchased and retired during period, shares	0	0
Stock repurchase program, remaining number of shares authorized to be repurchased	13,000,000.0	13,000,000.0

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Real Estate - Summary of Carrying Amounts of Investment in Real Estate (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Land	$ 5,785,367	$ 5,785,367
Depreciable property:
Buildings and improvements	18,476,711	18,464,484
Furniture, fixtures and equipment	1,989,219	1,970,033
In-Place lease intangibles	486,137	486,137
Projects under development:
Projects under development	476,010	411,134
Land held for development:
Land held for development	88,360	86,170
Investment in real estate	27,301,804	27,203,325
Accumulated depreciation	(8,059,619)	(7,859,657)
Investment in real estate, net	19,242,185	19,343,668
Land [Member]
Projects under development:
Projects under development	23,531	23,531
Land held for development:
Land held for development	46,160	46,160
Construction-in-progress [Member]
Projects under development:
Projects under development	452,479	387,603
Land held for development:
Land held for development	$ 42,200	$ 40,010

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Real Estate - Additional Information (Details) - Assets [Member]	3 Months Ended
	Mar. 31, 2021 USD ($)
Real estate acquired	$ 0
Real estate sold	$ 0

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Commitments to Acquire/Dispose of Real Estate - Acquired Properties From Unaffiliated Parties (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($) Property ApartmentUnit
Property/Unit schedule
Properties acquired | Property	1
Property Units acquired | ApartmentUnit	280
Purchase Price | $	$ 95,200
Rental Properties – Consolidated [Member]
Property/Unit schedule
Properties acquired | Property	1
Property Units acquired | ApartmentUnit	280
Purchase Price | $	$ 95,200

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Commitments to Acquire/Dispose of Real Estate - Separate Agreements to Dispose (Details) $ in Thousands	Mar. 31, 2021 USD ($) Property ApartmentUnit
Property/Unit schedule
Properties | Property	2
Apartment Units | ApartmentUnit	340
Sales Price	$ 240,000
Net Book Value at March 31, 2021	$ 139,411
Rental Properties – Consolidated [Member] | Wholly Owned Properties [Member]
Property/Unit schedule
Properties | Property	2
Apartment Units | ApartmentUnit	340
Sales Price	$ 240,000
Net Book Value at March 31, 2021	$ 139,411

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Investments in Partially Owned Entities - Consolidated Variable Interest Entities ("VIEs") - Additional Information (Details) $ in Thousands	Mar. 31, 2021 USD ($) Property ApartmentUnit	Dec. 31, 2020 USD ($)
Variable Interest Entity [Line Items]
Properties | Property	304
Apartment units | ApartmentUnit	77,889
Total assets	$ 20,169,015	$ 20,286,891
Total liabilities	$ 9,207,251	9,184,454
Consolidated VIE [Member]
Variable Interest Entity [Line Items]
Properties | Property	16
Apartment units | ApartmentUnit	3,399
Total assets	$ 780,900	784,100
Total liabilities	$ 237,800	$ 224,000

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Investments in Partially Owned Entities - Summary of Company's Investment in Unconsolidated Entities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Variable Interest Entity [Line Items]
Investments in Unconsolidated Entities	$ 53,274	$ 52,782
Real Estate Technology [Member]
Variable Interest Entity [Line Items]
Investments in Unconsolidated Entities	16,036	14,866
Other [Member]
Variable Interest Entity [Line Items]
Investments in Unconsolidated Entities	(493)	(372)
Unconsolidated VIE [Member] | Operating Property [Member]
Variable Interest Entity [Line Items]
Investments in Unconsolidated Entities	$ 37,731	$ 38,288
Ownership Percentage	33.30%

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Investments in Partially Owned Entities - Summary of Company's Investment in Unconsolidated Entities (Parenthetical) (Details)	Mar. 31, 2021 Entity
Real Estate Technology [Member]
Variable Interest Entity [Line Items]
Number of separate unconsolidated investment funds/Companies	5

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Restricted Deposits - Restricted Deposits (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Mortgage escrow deposits:
Replacement reserves	$ 10,182	$ 9,877
Mortgage principal reserves/sinking funds	15,360	14,168
Mortgage escrow deposits	25,542	24,045
Restricted cash:
Earnest money on pending acquisitions	3,500
Restricted deposits on real estate investments	302	307
Resident security and utility deposits	31,675	31,412
Other	1,364	1,373
Restricted cash	36,841	33,092
Restricted deposits	$ 62,383	$ 57,137	$ 58,435

XML

Leases - Additional Information (Details)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Residential Apartment Leases [Member]
Operating Leased Assets [Line Items]
Percentage of rental income	97.00%	97.00%
Residential Apartment Leases [Member] | Maximum [Member]
Operating Leased Assets [Line Items]
Retail leases term	12 months
Non-residential Leases [Member]
Operating Leased Assets [Line Items]
Percentage of rental income	3.00%	3.00%
Non-residential Leases [Member] | Maximum [Member]
Operating Leased Assets [Line Items]
Retail leases term	10 years
Non-residential Leases [Member] | Minimum [Member]
Operating Leased Assets [Line Items]
Retail leases term	5 years

XML

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, 2021	Mar. 31, 2020
Operating Leased Assets [Line Items]
Total lease revenue	$ 573,974	$ 657,657
Rental income	597,602	682,305
Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	557,081	639,518
Non-Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	16,893	18,139
Residential and Non-Residential Rent [Member]
Operating Leased Assets [Line Items]
Total lease revenue	555,494	630,574
Residential and Non-Residential Rent [Member] | Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	539,655	612,480
Residential and Non-Residential Rent [Member] | Non-Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	15,839	18,094
Utility Recoveries (RUBS Income) [Member]
Operating Leased Assets [Line Items]
Total lease revenue	18,132	17,646
Utility Recoveries (RUBS Income) [Member] | Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	17,954	17,418
Utility Recoveries (RUBS Income) [Member] | Non-Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	178	228
Parking Rent [Member]
Operating Leased Assets [Line Items]
Total lease revenue	10,001	9,930
Parking Rent [Member] | Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	9,734	9,833
Parking Rent [Member] | Non-Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	267	97
Other Lease Revenue [Member]
Operating Leased Assets [Line Items]
Total lease revenue	(9,653)	(493)
Other Lease Revenue [Member] | Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	(10,262)	(213)
Other Lease Revenue [Member] | Non-Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	609	(280)
Parking Revenue
Operating Leased Assets [Line Items]
Rental income	5,433	6,783
Other Revenue
Operating Leased Assets [Line Items]
Rental income	18,195	17,865
Other Rental Income [Member]
Operating Leased Assets [Line Items]
Rental income	$ 23,628	$ 24,648

XML

Leases - Summary of Residential and Non-Residential Accounts Receivable and Straight-Line Receivable Balances (Details) - Other Assets [Member] - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Residential Leases [Member]
Operating Leased Assets [Line Items]
Resident/tenant accounts receivable balances	$ 37,248	$ 30,856
Allowance for doubtful accounts	(31,799)	(24,021)
Net receivable balances	5,449	6,835
Straight-line receivable balances	25,360	19,992
Non-Residential Leases [Member]
Operating Leased Assets [Line Items]
Resident/tenant accounts receivable balances	6,847	7,598
Allowance for doubtful accounts	(5,724)	(6,527)
Net receivable balances	1,123	1,071
Straight-line receivable balances	$ 13,409	$ 13,413

XML

Leases - Summary of Residential and Non-Residential Accounts Receivable and Straight-Line Receivable Balances (Parenthetical) (Details)	Mar. 31, 2021
Leases [Abstract]
Holding percentage of residential security deposits of net receivable	35.40%

XML

Leases - Summary of Residential Bad Debt for Company's Properties (Details) - Residential Leases [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Lessor Lease Description [Line Items]
Bad debt, net	$ 13,693	$ 3,784
Rental Income [Member]
Lessor Lease Description [Line Items]
% of rental income	2.40%	0.60%

XML

Debt - Mortgage Notes Payable - Summary of Mortgage Notes Payable Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Debt Instrument [Line Items]
Mortgage notes payable, net beginning balance	$ 2,293,890
Proceeds	37,492	$ 78
Lump sum payoffs	(59,880)
Scheduled principal repayments	(1,871)
Amortization of premiums/ discounts	684	$ 595
Amortization of deferred financing costs, net	385
Mortgage notes payable, net ending balance	2,270,700
Fixed Rate Debt [Member] | Secured – Conventional [Member]
Debt Instrument [Line Items]
Mortgage notes payable, net beginning balance	1,901,091
Proceeds	28,500
Lump sum payoffs	(28,200)
Scheduled principal repayments	(1,871)
Amortization of premiums/ discounts	378
Amortization of deferred financing costs, net	19
Mortgage notes payable, net ending balance	1,899,917
Floating Rate Debt [Member]
Debt Instrument [Line Items]
Mortgage notes payable, net beginning balance	392,799
Proceeds	8,992
Lump sum payoffs	(31,680)
Amortization of premiums/ discounts	306
Amortization of deferred financing costs, net	366
Mortgage notes payable, net ending balance	370,783
Floating Rate Debt [Member] | Secured – Conventional [Member]
Debt Instrument [Line Items]
Mortgage notes payable, net beginning balance	31,494
Proceeds	8,992
Amortization of deferred financing costs, net	60
Mortgage notes payable, net ending balance	40,546
Floating Rate Debt [Member] | Secured – Tax Exempt [Member]
Debt Instrument [Line Items]
Mortgage notes payable, net beginning balance	361,305
Lump sum payoffs	(31,680)
Amortization of premiums/ discounts	306
Amortization of deferred financing costs, net	306
Mortgage notes payable, net ending balance	$ 330,237

XML

Debt - Mortgage Notes Payable - Summary of Mortgage Notes Payable Activity (Parenthetical) (Details)	3 Months Ended
	Mar. 31, 2021
Debt Instrument [Line Items]
Debt instrument, maturity date	Nov. 01, 2024
Fannie Mae Loan Pool [Member] | Mortgages [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	3.58%
Debt instrument, maturity date	Mar. 01, 2031

XML

Debt - Mortgage Notes Payable - Summary of Certain Interest Rate and Maturity Date Information (Details) - Mortgages [Member]	3 Months Ended
	Mar. 31, 2021
Debt Instrument [Line Items]
Weighted Average Interest Rate	3.18%
Maturity Date Ranges, Start	2022
Maturity Date Ranges, End	2061
Minimum [Member]
Debt Instrument [Line Items]
Interest Rate Ranges	0.05%
Maximum [Member]
Debt Instrument [Line Items]
Interest Rate Ranges	4.21%

XML

Debt - Mortgage Notes Payable - Additional Information (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Mortgage notes payable	$ 2,270,700	$ 2,293,890
Credit Enhanced Debt [Member]
Debt Instrument [Line Items]
Mortgage notes payable	$ 250,000

XML

Debt - Notes - Summary of Notes Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Debt Instrument [Line Items]
Notes, net beginning balance	$ 5,335,536
Amortization of premiums/ discounts	610	$ 681
Notes, net ending balance	5,337,103
Fixed Rate Debt [Member] | Unsecured – Public [Member]
Debt Instrument [Line Items]
Notes, net beginning balance	5,335,536
Amortization of premiums/ discounts	610
Amortization of deferred financing costs, net	957
Notes, net ending balance	$ 5,337,103

XML

Debt - Notes - Summary of Certain Interest Rate and Maturity Date Information (Details) - Notes [Member]	3 Months Ended
	Mar. 31, 2021
Debt Instrument [Line Items]
Weighted Average Interest Rate	3.77%
Maturity Date Ranges, Start	2023
Maturity Date Ranges, End	2047
Minimum [Member]
Debt Instrument [Line Items]
Interest Rate Ranges	2.50%
Maximum [Member]
Debt Instrument [Line Items]
Interest Rate Ranges	7.57%

XML

Debt - Line of Credit and Commercial Paper - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Nov. 04, 2019	Nov. 03, 2019	Nov. 01, 2019	Oct. 31, 2019
Line of Credit Facility [Line Items]
Debt instrument, maturity date	Nov. 01, 2024
Commercial paper balance outstanding	$ 1,000,000,000.0	$ 1,000,000,000.0	$ 500,000,000.0
Commercial Paper [Member]
Line of Credit Facility [Line Items]
Weighted average interest rates	0.30%
Commercial paper weighted average days outstanding	69 days
Weighted average amount outstanding	$ 457,300,000
Unsecured Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Unsecured revolving credit facility	2,500,000,000			$ 2,500,000,000	$ 2,000,000,000.0
Ability to increase LOC facility	$ 750,000,000.0
Debt instrument, basis spread on variable rate	0.775%
Percentage points of line of credit facility commitment fee	0.125%
Revolving credit facility	$ 0
Commercial paper balance outstanding	$ 430,000,000

XML

Debt - Line of Credit and Commercial Paper - Schedule of Unsecured Revolving Credit Facility (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Nov. 04, 2019	Nov. 03, 2019	Nov. 01, 2019	Oct. 31, 2019
Line of Credit Facility [Line Items]
Commercial paper balance outstanding	$ (1,000,000,000.0)	$ (1,000,000,000.0)	$ (500,000,000.0)
Unsecured Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Unsecured revolving credit facility commitment	2,500,000,000			$ 2,500,000,000	$ 2,000,000,000.0
Commercial paper balance outstanding	(430,000,000)
Unsecured revolving credit facility balance outstanding	0
Other restricted amounts	(100,699,000)
Unsecured revolving credit facility availability	$ 1,969,301,000

XML

Debt - Other - Schedule of Debt Extinguishment Costs Recorded as Additional Interest Expense (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($)
Debt Disclosure [Abstract]
Write-offs of unamortized deferred financing costs	$ 264

XML

Derivative and Other Fair Value Instruments - Summary of Valuations for Each Type of Fair Value Measurement (Details)	3 Months Ended
	Mar. 31, 2021
Employee Holdings Within The Supplemental Executive Retirement Plan
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Measurement Type	Employee holdings (other than Common Shares) within the supplemental executive retirement plan (the “SERP”)
Valuation Inputs	Quoted market prices for identical assets. These holdings are included in other assets and other liabilities on the consolidated balance sheets.
Redeemable Noncontrolling Interests Operating Partnership Redeemable Limited Partners
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Measurement Type	Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners
Valuation Inputs	Quoted market price of Common Shares.
Mortgage Notes Payable And Private Unsecured Debt
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Measurement Type	Mortgage notes payable and private unsecured debt (including its commercial paper and line of credit, if applicable)
Valuation Inputs	Indicative rates provided by lenders of similar loans.
Public Unsecured Notes
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Measurement Type	Public unsecured notes
Valuation Inputs	Quoted market prices for each underlying issuance.

XML

Derivative and Other Fair Value Instruments - Summary of Carrying and Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Carrying Value [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total debt, net	$ 8,037,556	$ 8,044,256
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total debt, net	8,584,965	8,999,875
Mortgage Notes Payable, Net [Member] | Carrying Value [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total debt, net	2,270,700	2,293,890
Mortgage Notes Payable, Net [Member] | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total debt, net	2,271,926	2,313,263
Unsecured Debt [Member] | Carrying Value [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total debt, net	5,766,856	5,750,366
Unsecured Debt [Member] | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total debt, net	$ 6,313,039	$ 6,686,612

XML

Derivative and Other Fair Value Instruments - Summary of Fair Value Measurements for Each Major Category of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Fair Value Of SERP Investments	$ 154,846	$ 160,293
Other Liabilities, Fair Value Disclosure	154,846	160,293
Redeemable Noncontrolling Interests - Operating Partnership/Redeemable Limited Partners	409,523	338,951	$ 353,342	$ 463,400
Fair Value, Inputs, Level 1 [Member]
Derivatives, Fair Value [Line Items]
Fair Value Of SERP Investments	154,846	160,293
Other Liabilities, Fair Value Disclosure	154,846	160,293
Redeemable Noncontrolling Interests - Operating Partnership/Redeemable Limited Partners	0	0
Fair Value, Inputs, Level 2 [Member]
Derivatives, Fair Value [Line Items]
Fair Value Of SERP Investments	0	0
Other Liabilities, Fair Value Disclosure	0	0
Redeemable Noncontrolling Interests - Operating Partnership/Redeemable Limited Partners	409,523	338,951
Fair Value, Inputs, Level 3 [Member]
Derivatives, Fair Value [Line Items]
Fair Value Of SERP Investments	0	0
Other Liabilities, Fair Value Disclosure	0	0
Redeemable Noncontrolling Interests - Operating Partnership/Redeemable Limited Partners	$ 0	$ 0

XML

Derivative and Other Fair Value Instruments - Summary of Effect of Cash Flow Hedges on the Accompanying Consolidated Statements of Operations and Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Effective Portion - Amount of Gain/(Loss) Recognized in OCI on Derivative	$ 0	$ (967)
Effective Portion - Amount of Gain/(Loss) Reclassified from Accumulated OCI into Income	(2,303)	(5,634)
Forward Starting Swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Effective Portion - Amount of Gain/(Loss) Recognized in OCI on Derivative	0	(967)
Effective Portion - Amount of Gain/(Loss) Reclassified from Accumulated OCI into Income	$ (2,303)	$ (5,634)

XML

Derivative and Other Fair Value Instruments - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Derivative Instrument Detail [Abstract]
Unrealized gain (loss) on interest rate cash flow hedges, pretax, accumulated other comprehensive income (loss)	$ 41.4	$ 43.7
Interest rate cash flow hedge gain (loss) to be reclassified during next 12 months, net	$ 10.3

XML

Earnings Per Share and Earnings Per Unit - Computation of Net Income per Share Basic and Net Income per Share Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share [Abstract]
Net income	$ 60,364	$ 332,671
Allocation to Noncontrolling Interests – Operating Partnership	(2,143)	(11,535)
Net (income) loss attributable to Noncontrolling Interests – Partially Owned Properties	(682)	(12,530)
Preferred distributions	(773)	(773)
Net income available to Common Shares	56,766	307,833
Numerator for net income per share – diluted	$ 58,909	$ 319,368
Weighted average Common Shares outstanding	372,280	371,582
OP Units	13,050	13,004
Dilutive Securities Options	1,586	2,363
Denominator for net income per share – diluted	386,916	386,949
Net income per share – basic	$ 0.15	$ 0.83
Net income per share – diluted	$ 0.15	$ 0.83

XML

Earnings Per Share and Earnings Per Unit - Computation of Net Income per Unit Basic and Net Income per Unit Diluted for Operating Partnership (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net income	$ 60,364	$ 332,671
Net (income) loss attributable to Noncontrolling Interests – Partially Owned Properties	$ (682)	$ (12,530)
Dilutive Securities Options	1,586	2,363
Denominator for net income per share – diluted	386,916	386,949
Net income per Unit – basic	$ 0.15	$ 0.83
Net income per Unit – diluted	$ 0.15	$ 0.83
ERPOP [Member]
Net income	$ 60,364	$ 332,671
Net (income) loss attributable to Noncontrolling Interests – Partially Owned Properties	(682)	(12,530)
Allocation to Preference Units	(773)	(773)
Numerator for net income per Unit – basic and diluted	$ 58,909	$ 319,368
Denominator for net income per Unit – basic	385,330	384,586
Dilutive Securities Options	1,586	2,363
Denominator for net income per share – diluted	386,916	386,949
Net income per Unit – basic	$ 0.15	$ 0.83
Net income per Unit – diluted	$ 0.15	$ 0.83

XML

Commitments and Contingencies - Additional Information (Details) $ in Millions	3 Months Ended
	Mar. 31, 2021 USD ($) Property ApartmentUnit Agreement
Commitments And Contingencies [Abstract]
Projects in various stages of development	2
Partially owned projects in various stages of development	1
Units in various stages of development | ApartmentUnit	824
Consolidated project under development commitment fund | $	$ 126.8
Various stages of development with estimated completion dates ranging through December 31, 2021	Dec. 31, 2021
Number of joint venture agreements | Agreement	2

XML

Reportable Segments - Additional Information (Details) - Customer	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Information [Line Items]
Number of customer contributed 10% or more of total revenue	0	0
Non-residential Leases [Member] | Revenue [Member]
Segment Reporting Information [Line Items]
Concentration risk, percentage	3.80%

XML

Reportable Segments - Reconciliation of NOI from Rental Real Estate Specific to Continuing Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Rental income	$ 597,602	$ 682,305
Property and maintenance expense	(117,054)	(115,816)
Real estate taxes and insurance expense	(103,470)	(97,732)
Operating income	135,560	422,085
Same Store, Non-same Store and Other
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Rental income	597,602	682,305
Property and maintenance expense	(117,054)	(115,816)
Real estate taxes and insurance expense	(103,470)	(97,732)
Total operating expenses	(220,524)	(213,548)
Operating income	$ 377,078	$ 468,757

XML

Reportable Segments - NOI for Each Segment from Our Rental Real Estate Specific to Continuing Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Segment Reporting Information [Line Items]
Rental income	$ 597,602	$ 682,305
Operating income	135,560	422,085
Total Assets	20,169,015		$ 20,286,891
Capital Expenditures	28,679
Same Store
Segment Reporting Information [Line Items]
Rental income	592,788	662,021
Operating expenses	212,052	204,201
Operating income	380,736	457,820
Total Assets	18,872,247
Capital Expenditures	28,618
Non-same store/other
Segment Reporting Information [Line Items]
Rental income	4,814	20,284
Operating expenses	8,472	9,347
Operating income	(3,658)	10,937
Total Assets	1,296,768
Capital Expenditures	61
Same Store, Non-same Store and Other
Segment Reporting Information [Line Items]
Rental income	597,602	682,305
Operating expenses	220,524	213,548
Operating income	377,078	468,757
Los Angeles | Same Store
Segment Reporting Information [Line Items]
Rental income	116,345	126,495
Operating expenses	39,201	38,837
Operating income	77,144	87,658
Total Assets	3,220,144
Capital Expenditures	4,666
Orange County | Same Store
Segment Reporting Information [Line Items]
Rental income	25,841	26,695
Operating expenses	6,336	6,172
Operating income	19,505	20,523
Total Assets	384,585
Capital Expenditures	1,056
San Diego | Same Store
Segment Reporting Information [Line Items]
Rental income	18,740	18,777
Operating expenses	4,639	4,585
Operating income	14,101	14,192
Total Assets	240,071
Capital Expenditures	679
Subtotal - Southern California | Same Store
Segment Reporting Information [Line Items]
Rental income	160,926	171,967
Operating expenses	50,176	49,594
Operating income	110,750	122,373
Total Assets	3,844,800
Capital Expenditures	6,401
San Francisco | Same Store
Segment Reporting Information [Line Items]
Rental income	105,332	125,102
Operating expenses	33,275	31,796
Operating income	72,057	93,306
Total Assets	3,472,556
Capital Expenditures	3,936
Washington DC | Same Store
Segment Reporting Information [Line Items]
Rental income	99,117	104,718
Operating expenses	33,321	32,103
Operating income	65,796	72,615
Total Assets	3,323,572
Capital Expenditures	6,325
New York | Same Store
Segment Reporting Information [Line Items]
Rental income	99,754	118,025
Operating expenses	53,076	50,909
Operating income	46,678	67,116
Total Assets	3,971,142
Capital Expenditures	5,993
Boston | Same Store
Segment Reporting Information [Line Items]
Rental income	56,606	63,683
Operating expenses	19,374	18,327
Operating income	37,232	45,356
Total Assets	1,742,381
Capital Expenditures	3,469
Seattle | Same Store
Segment Reporting Information [Line Items]
Rental income	61,709	68,869
Operating expenses	19,799	18,683
Operating income	41,910	50,186
Total Assets	2,010,532
Capital Expenditures	2,139
Denver | Same Store
Segment Reporting Information [Line Items]
Rental income	9,344	9,657
Operating expenses	3,031	2,789
Operating income	6,313	6,868
Total Assets	507,264
Capital Expenditures	355
Non-same store | Non-same store/other
Segment Reporting Information [Line Items]
Rental income	4,660	4,163
Operating expenses	1,445	1,246
Operating income	3,215	2,917
Total Assets	297,717
Capital Expenditures	62
Other | Non-same store/other
Segment Reporting Information [Line Items]
Rental income	154	16,121
Operating expenses	7,027	8,101
Operating income	(6,873)	$ 8,020
Total Assets	999,051
Capital Expenditures	$ (1)

XML

Reportable Segments - NOI for Each Segment from Our Rental Real Estate Specific to Continuing Operations (Parenthetical) (Details) - Property	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Disclosure Of Entitys Reportable Segments [Abstract]
Units in same store properties	77,060	77,060

XML

Subsequent Events - Additional Information (Details) - Subsequent Events [Member] $ in Millions	Apr. 01, 2021 USD ($) Property ApartmentUnit
Subsequent Event [Line Items]
Number of properties sold | Property	2
Number of apartment | ApartmentUnit	333
Proceeds from sale of properties | $	$ 123.8