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Capital - Shares and Units and Private Perpetual Preferred Units (Details) - $ / shares | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | May 16, 2019
Shares and Units [Abstract] |  |  |
OP units outstanding (in shares) | 285,300,000 |  |
OP units owned by the Company (in shares) | 171,600,000 |  |
OP units not owned by the Company (in shares) | 113,700,000 |  |
Percentage of dividends on common stock received until performance criteria met for LTIP units | 10.00% |  |
Percentage of dividends on common stock received after performance criteria met for LTIP units | 90.00% |  |
Percentage of dividends on common stock received in periods after performance criteria met for LTIP units | 100.00% |  |
2019 Plan |  |  |
Shares and Units [Abstract] |  |  |
Number of shares authorized under the plan (in shares) | 11,000,000.0 |  | 11,000,000.0
Empire State Realty OP | Empire State Realty Trust |  |  |
Shares and Units [Abstract] |  |  |
OP units owned by the Company (as a percent) | 60.10% |  |
Empire State Realty OP | Other partners, certain directors, member of senior management and other employees |  |  |
Shares and Units [Abstract] |  |  |
OP units not owned by the Company (as a percent) | 39.90% |  |
Private Perpetual Preferred Units, Series 2019 |  |  |
Shares and Units [Abstract] |  |  |
Private perpetual preferred units, issued (in shares) | 4,664,038 | 4,610,383 |
Private perpetual preferred units, liquidation preference per share (in dollars per share) | $ 13.52 | $ 13.52 |
Cumulative cash distributions (in dollars per share) | $ 0.70 |  |
Private Perpetual Preferred Units, Series 2014 |  |  |
Shares and Units [Abstract] |  |  |
Private perpetual preferred units, issued (in shares) | 1,560,360 | 1,560,360 |
Private perpetual preferred units (in shares) | 1,560,360 |  |
Private perpetual preferred units, liquidation preference per share (in dollars per share) | $ 16.62 | $ 16.62 |
Dividend declared (in dollars per share) | $ 0.60 |  |

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