XML 75 R62.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Commitments and Contingencies - Multiemployer Pension and Defined Contribution Plans Narrative (Details) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jul. 31, 2014 property | Jun. 30, 2016 USD ($) | Jun. 30, 2015 USD ($) | Jun. 30, 2014 USD ($)
Multiemployer Plans [Line Items] |  |  |  |
Number of properties acquired | property | 2 |  |  |
Building Service 32BJ [Member] | Pension Plans [Member] |  |  |  |
Multiemployer Plans [Line Items] |  |  |  |
Plan contributions |  | $ 249.5 | $ 242.3 | $ 224.5
Building Service 32BJ [Member] | Health Plans [Member] |  |  |  |
Multiemployer Plans [Line Items] |  |  |  |
Plan contributions |  | $ 1,200.0 | $ 1,100.0 | $ 1,000.0

X
- Definition Number Of Properties Acquired + References No definition available. + Details
Name: | esrt_NumberOfPropertiesAcquired
Namespace Prefix: | esrt_
Data Type: | xbrli:integerItemType
Balance Type: | na
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_MultiemployerPlansLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of contributions made to the multiemployer plan by all employers who participate in the plan. A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 7 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450678-114947 + Details
Name: | us-gaap_MultiemployerPlansPlanContributions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_MultiemployerPlanNameAxis=esrt_BuildingService32BJMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MultiemployerPlanTypeAxis=us-gaap_MultiemployerPlansPensionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MultiemployerPlanTypeAxis=us-gaap_MultiemployerPlansPostretirementBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |