XML 111 R38.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Description of Business and Organization Description of Business and Organization Narrative (Details) (USD $) | 0 Months Ended | 9 Months Ended | 12 Months Ended | 0 Months Ended
--- | --- | --- | --- | ---
Oct. 06, 2013 entity | Oct. 06, 2013 | Dec. 31, 2014 entity sqft | Dec. 31, 2012 | Sep. 28, 2012
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |
OP units owned by the Company, percent |  |  | 40.10%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest |  |
Area of real estate property |  |  | 10,000,000 us-gaap_AreaOfRealEstateProperty |  |
Operating partnership units issued during period | $ 2,800,000,000 esrt_LimitedPartnersCapitalAccountUnitsIssuedDuringPeriodValue |  |  |  |
Number of entities to be treated as TRS's |  |  | 2 esrt_NumberofEntitiestobeTreatedasTaxableREITSubsidiary |  |
Contributions |  | 8,223,000 us-gaap_PartnersCapitalAccountContributions |  | 2,107,000 us-gaap_PartnersCapitalAccountContributions |
Number of entities acquired | 4 us-gaap_NumberOfBusinessesAcquired |  |  |  |
Predecessor [Member] |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |
Area of real estate property |  |  | 380,000 us-gaap_AreaOfRealEstateProperty / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember |  |
Predecessor [Member] | New York State Supreme Court, New York County [Member] |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |
Damages awarded |  |  |  |  | 55,000,000 us-gaap_LossContingencyDamagesAwardedValue / us-gaap_LitigationCaseAxis = esrt_NewYorkStateSupremeCourtNewYorkCountyMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember
Percent of damages awarded required to be in cash |  |  |  |  | 80.00%esrt_LossContingencyDamagesAwardedPercentinCashMinimum / us-gaap_LitigationCaseAxis = esrt_NewYorkStateSupremeCourtNewYorkCountyMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember
Maximum percent of freely-tradable common stock or partnership units |  |  |  |  | 20.00%esrt_LossContingencyDamagesAwardedFreelytradableCommonStockorOperatingUnitsMaximum / us-gaap_LitigationCaseAxis = esrt_NewYorkStateSupremeCourtNewYorkCountyMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember
Contributions |  |  |  |  | 55,000,000 us-gaap_PartnersCapitalAccountContributions / us-gaap_LitigationCaseAxis = esrt_NewYorkStateSupremeCourtNewYorkCountyMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember
Secured Revolving and Term Credit Facility [Member] |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |
Current borrowing capacity | 800,000,000.0 us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity / us-gaap_CreditFacilityAxis = esrt_SecuredRevolvingandTermCreditFacilityMember | 800,000,000.0 us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity / us-gaap_CreditFacilityAxis = esrt_SecuredRevolvingandTermCreditFacilityMember | 800,000,000.0 us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity / us-gaap_CreditFacilityAxis = esrt_SecuredRevolvingandTermCreditFacilityMember |  |
Maximum borrowing capacity | 1,250,000,000.00 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = esrt_SecuredRevolvingandTermCreditFacilityMember | 1,250,000,000.00 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = esrt_SecuredRevolvingandTermCreditFacilityMember | 1,250,000,000.00 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = esrt_SecuredRevolvingandTermCreditFacilityMember |  |
ESRT [Member] |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |
OP units owned by the Company, percent |  |  | 40.10%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
ESRT [Member] | Predecessor [Member] | New York State Supreme Court, New York County [Member] |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |
Maximum percent of freely-tradable common stock or partnership units |  |  |  |  | 20.00%esrt_LossContingencyDamagesAwardedFreelytradableCommonStockorOperatingUnitsMaximum / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_LitigationCaseAxis = esrt_NewYorkStateSupremeCourtNewYorkCountyMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember
Accredited Investor [Member] |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |
Operating partnership units issued during period (in shares) | 149,000,000 esrt_LimitedPartnersCapitalAccountUnitsIssuedDuringPeriod / us-gaap_TitleOfIndividualAxis = esrt_AccreditedPriorInvestorMember |  |  |  |
Operating partnership units issued during period | 2,100,000,000 esrt_LimitedPartnersCapitalAccountUnitsIssuedDuringPeriodValue / us-gaap_TitleOfIndividualAxis = esrt_AccreditedPriorInvestorMember |  |  |  |
Non-accredited Prior Investors [Member] |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |
Operating partnership units issued during period | $ 733,300,000 esrt_LimitedPartnersCapitalAccountUnitsIssuedDuringPeriodValue / us-gaap_TitleOfIndividualAxis = esrt_NonaccreditedPriorInvestorsMember |  |  |  |
Common Class A [Member] |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |
Issuance of Common Stock (in units) | 82,200,000 us-gaap_StockIssuedDuringPeriodSharesNewIssues / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |  |  |
Share price (in dollars per share) | $ 13.00 us-gaap_SharePrice / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember | $ 13.00 us-gaap_SharePrice / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |  |
Common Class A [Member] | ESRT [Member] |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |
Par value |  |  | 0.01 us-gaap_CommonStockParOrStatedValuePerShare / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |
Common Class A [Member] | Accredited Investor [Member] | ESRT [Member] |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |
Issuance of Common Stock (in units) | 12,100,000 us-gaap_StockIssuedDuringPeriodSharesNewIssues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember / us-gaap_TitleOfIndividualAxis = esrt_AccreditedPriorInvestorMember |  |  |  |
Series PR Operating Partnership Units [Member] |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |
Operating partnership units issued during period (in shares) | 82,200,000 esrt_LimitedPartnersCapitalAccountUnitsIssuedDuringPeriod / us-gaap_StatementClassOfStockAxis = esrt_SeriesPRCommonUnitsMember |  |  |  |
Series PR Operating Partnership Units [Member] | Accredited Investor [Member] | ESRT [Member] |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |
Operating partnership units issued during period (in shares) | 13,200,000 esrt_LimitedPartnersCapitalAccountUnitsIssuedDuringPeriod / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementClassOfStockAxis = esrt_SeriesPRCommonUnitsMember / us-gaap_TitleOfIndividualAxis = esrt_AccreditedPriorInvestorMember |  |  |  |
Common Class B [Member] | Accredited Investor [Member] | ESRT [Member] |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |
Issuance of Common Stock (in units) | 1,100,000 us-gaap_StockIssuedDuringPeriodSharesNewIssues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember / us-gaap_TitleOfIndividualAxis = esrt_AccreditedPriorInvestorMember |  |  |  |
Office Building [Member] |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |
Area of real estate property |  |  | 9,300,000 us-gaap_AreaOfRealEstateProperty / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_OfficeBuildingMember |  |
Number of properties |  |  | 14 us-gaap_NumberOfRealEstateProperties / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_OfficeBuildingMember |  |
Office Building [Member] | Manhattan [Member] |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |
Area of real estate property |  |  | 7,400,000 us-gaap_AreaOfRealEstateProperty / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_OfficeBuildingMember / us-gaap_StatementGeographicalAxis = esrt_ManhattanMember |  |
Number of properties |  |  | 9 us-gaap_NumberOfRealEstateProperties / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_OfficeBuildingMember / us-gaap_StatementGeographicalAxis = esrt_ManhattanMember |  |
Office Building [Member] | Fairfield County, Connecticut and Westchester County, New York [Member] |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |
Area of real estate property |  |  | 1,900,000 us-gaap_AreaOfRealEstateProperty / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_OfficeBuildingMember / us-gaap_StatementGeographicalAxis = esrt_FairfieldCountyConnecticutandWestchesterCountyNewYorkMember |  |
Number of properties |  |  | 5 us-gaap_NumberOfRealEstateProperties / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_OfficeBuildingMember / us-gaap_StatementGeographicalAxis = esrt_FairfieldCountyConnecticutandWestchesterCountyNewYorkMember |  |
Retail Site [Member] | Manhattan and Westport, Connecticut [Member] |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |
Area of real estate property |  |  | 204,175 us-gaap_AreaOfRealEstateProperty / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_RetailSiteMember / us-gaap_StatementGeographicalAxis = esrt_ManhattanandWestportConnecticutMember |  |
Retail Site [Member] | Manhattan [Member] |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |
Area of real estate property |  |  | 523,463 us-gaap_AreaOfRealEstateProperty / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_RetailSiteMember / us-gaap_StatementGeographicalAxis = esrt_ManhattanMember |  |
Number of properties |  |  | 4 us-gaap_NumberOfRealEstateProperties / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_RetailSiteMember / us-gaap_StatementGeographicalAxis = esrt_ManhattanMember |  |
Retail Site [Member] | Westport, Connecticut [Member] |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |
Number of properties |  |  | 2 us-gaap_NumberOfRealEstateProperties / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_RetailSiteMember / us-gaap_StatementGeographicalAxis = esrt_WestportConnecticutMember |  |
Other Property [Member] | Stamford, Connecticut [Member] |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |
Area of real estate property |  |  | 380,000 us-gaap_AreaOfRealEstateProperty / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_OtherPropertyMember / us-gaap_StatementGeographicalAxis = esrt_StamfordConnecticutMember |  |
Development Parcel [Member] | Consolidated Properties [Member] | Predecessor [Member] |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |
Number of properties |  |  | 1 us-gaap_NumberOfRealEstateProperties / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = esrt_DevelopmentParcelMember / us-gaap_RealEstatePropertiesAxis = us-gaap_ConsolidatedPropertiesMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember |  |

X
- Definition Limited Partners' Capital Account, Units Issued During Period + References No definition available. + Details
Name: | esrt_LimitedPartnersCapitalAccountUnitsIssuedDuringPeriod
Namespace Prefix: | esrt_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Common Stock and Limited Partners' Capital Account, Units Issued During Period, Value + References No definition available. + Details
Name: | esrt_LimitedPartnersCapitalAccountUnitsIssuedDuringPeriodValue
Namespace Prefix: | esrt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Loss Contingency, Damages Awarded, Freely-tradable Common Stock or Operating Units, Maximum + References No definition available. + Details
Name: | esrt_LossContingencyDamagesAwardedFreelytradableCommonStockorOperatingUnitsMaximum
Namespace Prefix: | esrt_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Loss Contingency, Damages Awarded, Percent in Cash, Minimum + References No definition available. + Details
Name: | esrt_LossContingencyDamagesAwardedPercentinCashMinimum
Namespace Prefix: | esrt_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of Entities to be Treated as Taxable REIT Subsidiary + References No definition available. + Details
Name: | esrt_NumberofEntitiestobeTreatedasTaxableREITSubsidiary
Namespace Prefix: | esrt_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | esrt_OrganizationConsolidationandPresentationofFinancialStatementsDisclosureLineItems
Namespace Prefix: | esrt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Area of a real estate property. + References No definition available. + Details
Name: | us-gaap_AreaOfRealEstateProperty
Namespace Prefix: | us-gaap_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Face amount or stated value per share of common stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 + Details
Name: | us-gaap_CommonStockParOrStatedValuePerShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055 + Details
Name: | us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of damages awarded to the plaintiff in the legal matter. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349 + Details
Name: | us-gaap_LossContingencyDamagesAwardedValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The number of businesses acquired by the entity during the period. + References No definition available. + Details
Name: | us-gaap_NumberOfBusinessesAcquired
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfRealEstateProperties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Total contributions made by each class of partners (i.e., general, limited and preferred partners). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770 + Details
Name: | us-gaap_PartnersCapitalAccountContributions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Price of a single share of a number of saleable stocks of a company. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
Name: | us-gaap_SharePrice
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of new stock issued during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesNewIssues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=us-gaap_ParentCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=esrt_SecuredRevolvingandTermCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=esrt_DevelopmentParcelMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=us-gaap_OfficeBuildingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=us-gaap_OtherPropertyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=us-gaap_RetailSiteMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=esrt_SeriesPRCommonUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassBMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementScenarioAxis=us-gaap_PredecessorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TitleOfIndividualAxis=esrt_AccreditedPriorInvestorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TitleOfIndividualAxis=esrt_NonaccreditedPriorInvestorsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |