| Cover Page | Oct. 27, 2021 |
| Document Information [Line Items] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001541401 |
| Document Type | 8-K |
| Document Period End Date | Oct. 27, 2021 |
| Entity Registrant Name | EMPIRE STATE REALTY TRUST, INC. |
| Entity Incorporation State Country Code | MD |
| Entity File Number | 001-36105 |
| Entity Tax Identification Number | 37-1645259 |
| Entity Address, Address Line One | 111 West 33rd Street |
| Entity Address, Address Line Two | 12th 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 |
| EMPIRE STATE REALTY OP, L.P. [Member] | |
| Document Information [Line Items] | |
| Entity Central Index Key | 0001553079 |
| Entity Registrant Name | EMPIRE STATE REALTY OP, L.P. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-36106 |
| Entity Tax Identification Number | 45-4685158 |
| Common Class A [Member] | |
| Document Information [Line Items] | |
| Security 12b Title | Class A Common Stock, par value $0.01 per share |
| Trading Symbol | ESRT |
| Security Exchange Name | NYSE |
| Series ES Operating Partnership Units [Member] | EMPIRE STATE REALTY OP, L.P. [Member] | |
| Document Information [Line Items] | |
| Security 12b Title | Series ES Operating Partnership Units |
| Trading Symbol | ESBA |
| Security Exchange Name | NYSEArca |
| Series 60 Operating Partnership Units [Member] | EMPIRE STATE REALTY OP, L.P. [Member] | |
| Document Information [Line Items] | |
| Security 12b Title | Series 60 Operating Partnership Units |
| Trading Symbol | OGCP |
| Security Exchange Name | NYSEArca |
| Series 250 Operating Partnership Units [Member] | EMPIRE STATE REALTY OP, L.P. [Member] | |
| Document Information [Line Items] | |
| Security 12b Title | Series 250 Operating Partnership Units |
| Trading Symbol | FISK |
| Security Exchange Name | NYSEArca |
