Document and Entity Information	Aug. 01, 2019
Document Information [Line Items]
Amendment Flag	false
Entity Central Index Key	0001541401
Document Type	8-K
Document Period End Date	Aug. 01, 2019
Entity Registrant Name	EMPIRE STATE REALTY TRUST, INC.
Entity File Number	001-36105
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	37-1645259
Entity Address, Address Line One	111 West​​​​​​​ 33rd Street,
Entity Address, Address Line Two	12​​​​​​​th Floor
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10120
City Area Code	212
Local Phone Number	687-8700
Written Communications	false
Soliciting Material	false
Pre-commencement Tender Offer	false
Pre-commencement Issuer Tender Offer	false
Entity Emerging Growth Company	false
Common Class A [Member]
Document Information [Line Items]
Title of 12(b) Security	Class A Common Stock, par value $0.01 per share
Trading Symbol	ESRT
Security Exchange Name	NYSE
EMPIRE STATE REALTY OP LP [Member]
Document Information [Line Items]
Entity Registrant Name	EMPIRE STATE REALTY OP, L.P.
Entity File Number	001-36106
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	45-4685158
EMPIRE STATE REALTY OP LP [Member] | Series ES Operating Partnership Units [Member]
Document Information [Line Items]
Title of 12(b) Security	Series ES Operating Partnership Units
Trading Symbol	ESBA
Security Exchange Name	NYSE
EMPIRE STATE REALTY OP LP [Member] | Series 250 Operating Partnership Units [Member]
Document Information [Line Items]
Title of 12(b) Security	Series 250 Operating Partnership Units
Trading Symbol	FISK
Security Exchange Name	NYSE
EMPIRE STATE REALTY OP LP [Member] | Series 60 Operating Partnership Units [Member]
Document Information [Line Items]
Title of 12(b) Security	Series 60 Operating Partnership Units
Trading Symbol	OGCP
Security Exchange Name	NYSE