Document and Entity Information Document	3 Months Ended
	Mar. 31, 2014	May 05, 2014 Common Class A [Member]	May 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	Mar. 31, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	Q1
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		94,495,247	1,122,130