Related Party Transactions - Tax Protection Agreement (Details) - Affiliated Entity [Member] $ in Millions	Oct. 07, 2013 USD ($) property
Related Party Transaction [Line Items]
Number of properties protected (property) \| property	4
Aggregate number of operating partnership units and common stock threshold during tax protection period	50.00%
Bottom dollar guarantee of aggregate indebtedness during tax protection period \| $	$ 160.0

Related Party Transaction, Aggregate Number of Operating Partnership Units and Common Stock Threshold During Tax Protection Period

No definition available.

Name:	esrt_RelatedPartyTransactionAggregateNumberofOperatingPartnershipUnitsandCommonStockThresholdDuringTaxProtectionPeriod
Namespace Prefix:	esrt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration