XML 57 R46.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Commitments and Contingencies - Unfunded Capital Expenditures (Details) $ in Millions | Sep. 30, 2016 USD ($)
--- | ---
Commitments and Contingencies Disclosure [Abstract] |
Unfunded capital expenditures | $ 57.1

X
- Definition Unfunded Capital Expenditures + References No definition available. + Details
Name: | esrt_UnfundedCapitalExpenditures
Namespace Prefix: | esrt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration