XML 83 R64.htm IDEA: XBRL DOCUMENT
v3.22.4

Related Party Transactions (Details) |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Dec. 31, 2022 USD ($) | Aug. 31, 2022 USD ($) community | Jan. 31, 2022 USD ($) | Nov. 30, 2021 USD ($) | Oct. 31, 2021 USD ($) | Sep. 30, 2021 USD ($) | Mar. 31, 2021 USD ($) | Nov. 30, 2019 USD ($) | Jun. 30, 2019 USD ($) apartment | Feb. 28, 2019 USD ($) | Oct. 31, 2018 USD ($) apartment | May 31, 2018 USD ($) apartment | Mar. 31, 2017 USD ($) unit | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Feb. 28, 2022 USD ($)
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Management and other fees from affiliates |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 14,100,000 | $ 10,300,000 | $ 11,300,000 |
Revenues from development and redevelopment fees |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,000,000 | 1,100,000 | 1,700,000 |
Debt assumed in connection with acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  | 21,303,000 | 0 | 0 |
Payments to acquire equity method investments |  |  |  |  |  |  |  |  |  |  |  |  |  | 163,188,000 | 306,266,000 | 114,017,000 |
Commitment to fund preferred equity investment in the project |  |  |  |  |  |  |  |  |  |  |  |  |  | 84,900,000 |  |  |
Co-investments | $ 1,127,491,000 |  |  |  |  |  |  |  |  |  |  |  |  | 1,127,491,000 | 1,177,802,000 |  |
Encumbrance | 593,943,000 |  |  |  |  |  |  |  |  |  |  |  |  | $ 593,943,000 |  |  |
Brio |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of units acquired | apartment |  |  |  |  |  |  |  |  | 300 |  |  |  |  |  |  |  |
Purchase price |  |  |  |  |  |  |  |  | $ 164,900,000 |  |  |  |  |  |  |  |
Debt assumed in connection with acquisition |  |  |  |  |  |  |  |  | $ 98,700,000 |  |  |  |  |  |  |  |
Apartment Home Community in Ventura, California |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of units acquired | apartment |  |  |  |  |  |  |  |  |  |  |  | 400 |  |  |  |  |
Annualized preferred return rate |  |  |  |  |  |  |  |  |  |  |  | 10.25% |  | 9.00% |  |  |
Commitment to fund preferred equity investment in the project | 13,000,000 |  |  |  |  |  |  |  |  |  |  | $ 26,500,000 |  |  |  |  |
Purchase commitment, funded amount |  |  |  | $ 18,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Membership Interest in Sage at Cupertino |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of units acquired | unit |  |  |  |  |  |  |  |  |  |  |  |  | 230 |  |  |  |
Co-investments |  |  |  |  |  |  |  |  |  |  |  |  | $ 15,300,000 |  |  |  |
Investment interest acquired |  |  |  |  |  |  |  |  |  |  |  |  | 40.50% |  |  |  |
Contract price |  |  |  |  |  |  |  |  |  |  |  |  | $ 90,000,000 |  |  |  |
Encumbrance |  |  |  |  |  |  |  |  |  |  |  |  | $ 52,000,000 |  |  |  |
Marcus and Millichamp Company TMMC Affiliate | Related Party Note Receivable, Secured, Bearing Interest at 9.5%, Due October 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Due from affiliates | $ 7,000,000 |  |  |  |  |  |  |  |  |  |  |  |  | $ 7,000,000 | 6,600,000 |  |
Affiliated Entity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes receivable, related parties |  | $ 11,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of communities owned | community |  | 3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  | 9.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Affiliated Entity | Multifamily Development in Mountain View, California |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to acquire equity method investments |  |  |  |  |  |  |  |  |  | $ 24,500,000 |  |  |  |  |  |  |
Annualized preferred return rate |  |  |  |  |  |  |  |  |  | 11.00% |  |  |  |  |  |  |
Affiliated Entity | Home Community Development in Burlingame, California |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of units acquired | apartment |  |  |  |  |  |  |  |  |  |  | 268 |  |  |  |  |  |
Payments to acquire equity method investments |  |  |  |  |  |  |  |  |  |  | $ 18,600,000 |  |  |  |  |  |
Annualized preferred return rate |  |  |  |  |  |  |  |  |  |  | 12.00% |  |  |  |  |  |
Affiliated Entity | Related Party Bridge Loan On Property Acquired By Wesco VI |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash received from collection of note receivable |  |  | $ 121,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Affiliated Entity | Related Party Bridge Loan On Property Acquired By Wesco VI | The Rexford |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes receivable, related parties |  |  |  | $ 61,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  | 2.36% |  |  |  |  |  |  |  |  |  |  |  |  |
Affiliated Entity | Related Party Bridge Loan On Property Acquired By Wesco VI | Monterra In Mill Creek |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes receivable, related parties |  |  |  |  | $ 30,300,000 |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  | 2.30% |  |  |  |  |  |  |  |  |  |  |  |
Affiliated Entity | Related Party Bridge Loan On Property Acquired By Wesco VI | Martha Lake Apartments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes receivable, related parties |  |  |  |  |  | $ 29,200,000 |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  | 2.15% |  |  |  |  |  |  |  |  |  |  |
Affiliated Entity | Related Party Bridge Loan On Property Acquired By Wesco VI | Vela on Ox |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes receivable, related parties |  |  | $ 100,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  | 2.64% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Affiliated Entity | Related Party Bridge Loan on Property in Vista, CA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes receivable, related parties |  |  |  | $ 48,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  | 2.36% |  |  |  |  |  |  |  |  |  |  |  |  |
Affiliated Entity | Related Party Bridge Loans On Property Acquired By Wesco I |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes receivable, related parties |  |  |  |  |  |  | $ 52,500,000 |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  | 2.55% |  |  |  |  |  |  |  |  |  |
Affiliated Entity | Related Party Bridge Loans on Property Acquired by Wesco V |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes receivable, related parties |  |  |  |  |  |  |  | $ 85,500,000 |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  | 1.30% |  |  |  |  |  |  |  |  |
Affiliated Entity | Related Party Bridge Loan On Property Acquired By BEX II |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes receivable, related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 32,800,000
Board of Directors Chairman | Multifamily Development In Mountain View, CA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annualized preferred return rate |  |  |  |  |  |  |  |  |  | 9.00% |  |  |  |  |  |  |
Board of Directors Chairman | Home Community Development in Burlingame, California |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annualized preferred return rate |  |  |  |  |  |  |  |  |  |  | 9.00% |  |  |  |  |  |
Disposition of Multi-family Properties | Marcus and Millichamp Company TMMC Affiliate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for brokerage fees |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 | $ 200,000 |

X
- Definition Equity Method Investment, Commitment To Fund, Amount + References No definition available. + Details
Name: | ess_EquityMethodInvestmentCommitmentToFundAmount
Namespace Prefix: | ess_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Equity Method Investment, Ownership Percentage Acquired + References No definition available. + Details
Name: | ess_EquityMethodInvestmentOwnershipPercentageAcquired
Namespace Prefix: | ess_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Equity Method Investments, Contract Price + References No definition available. + Details
Name: | ess_EquityMethodInvestmentsContractPrice
Namespace Prefix: | ess_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Equity Method Investments, Preferred Returns Rate + References No definition available. + Details
Name: | ess_EquityMethodInvestmentsPreferredReturnsRate
Namespace Prefix: | ess_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Equity Method Investments, Purchase Commitment, Funded Amount + References No definition available. + Details
Name: | ess_EquityMethodInvestmentsPurchaseCommitmentFundedAmount
Namespace Prefix: | ess_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Management And Other Fees From Affiliates + References No definition available. + Details
Name: | ess_ManagementAndOtherFeesFromAffiliates
Namespace Prefix: | ess_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Notes Receivable, Related Party, Interest Rate + References No definition available. + Details
Name: | ess_NotesReceivableRelatedPartyInterestRate
Namespace Prefix: | ess_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Communities Owned + References No definition available. + Details
Name: | ess_NumberOfCommunitiesOwned
Namespace Prefix: | ess_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of units acquired. + References No definition available. + Details
Name: | ess_NumberOfUnitsAcquired
Namespace Prefix: | ess_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Revenues from Development and Redevelopment Fees + References No definition available. + Details
Name: | ess_RelatedPartyTransactionRevenuesfromDevelopmentandRedevelopmentFees
Namespace Prefix: | ess_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of lien or mortgage outstanding on real estate investment properties for entities with a substantial portion of business acquiring and holding investment real estate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Paragraph Column B -Subsection 28 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28(Column B)) -URI https://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024 + Details
Name: | srt_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
Namespace Prefix: | srt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=126966197&loc=d3e6613-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126975305&loc=d3e6927-128479 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126966197&loc=d3e6578-128477 + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition For an unclassified balance sheet, amount of receivables due from an entity that is affiliated with the reporting entity by means of direct or indirect ownership. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=6457730&loc=d3e39599-107864 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.3) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
Name: | us-gaap_DueFromAffiliates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in equity method investee and investment in and advance to affiliate. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(18)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of debt that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4304-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4313-108586 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4332-108586 + Details
Name: | us-gaap_NoncashOrPartNoncashAcquisitionDebtAssumed1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition For an unclassified balance sheet, amounts due from parties associated with the reporting entity as evidenced by a written promise to pay. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)(b)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.3) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(k)(1)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
Name: | us-gaap_NotesReceivableRelatedParties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of cash paid for brokerage fees during the current period. This element is intended to represent the brokerage fees paid by and between financial industry participants. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3536-108585 + Details
Name: | us-gaap_PaymentsForBrokerageFees
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireEquityMethodInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash inflow associated with principal collections from a borrowing supported by a written promise to pay an obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3179-108585 + Details
Name: | us-gaap_ProceedsFromCollectionOfNotesReceivable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=ess_BrioWalnutCreekCaliforniaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=ess_ApartmentHomeCommunityInVenturaCaliforniaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=ess_MembershipInterestInSageAtCupertinoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=ess_MarcusAndMillichampCompanyTmmcAffiliateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=ess_SecuredNoteReceivable9.5InterestRateDueOctober2019Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=srt_AffiliatedEntityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=ess_MultifamilyDevelopmentInMountainViewCaliforniaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=ess_HomeCommunityDevelopmentinBurlingameCaliforniaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=ess_RelatedPartyBridgeLoanOnPropertyAcquiredByWescoVIMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ess_TheRexfordMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ess_MonterraInMillCreekMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ess_MarthaLakeApartmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=ess_VelaOnOxMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=ess_RelatedPartyBridgeLoanOnPropertyInVistaCAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=ess_RelatedPartyBridgeLoansOnPropertyAcquiredByWescoIMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=ess_RelatedPartyBridgeLoansOnPropertyAcquiredByWescoVMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=ess_RelatedPartyBridgeLoanOnPropertyAcquiredByBEXIIMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=srt_BoardOfDirectorsChairmanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=ess_MultifamilyDevelopmentInMountainViewCAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=ess_DispositionOfMultifamilyPropertiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |