Document and Entity Information Document	6 Months Ended
	Jun. 30, 2014	Aug. 05, 2014 Common Class A [Member]	Aug. 05, 2014 Common Class B [Member]
Entity Registrant Name	Empire State Realty Trust, Inc.
Entity Central Index Key	0001541401
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Amendment Flag	false
Document Period End Date	Jun. 30, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	Q2
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		97,042,377	1,232,183