Equity - Shares and Units (Narrative) (Details)	6 Months Ended
Jun. 30, 2026 vote class shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
OP Unit, redemption term for cash (in years)	1 year
OP Unit, exchange ratio to common stock	1
OP units owned by the Company and other partners (in shares)	110,470,000
Number of classes \| class	2
Exchange ratio	0.020
Empire State Realty OP \| Empire State Realty Trust
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
OP units owned by the company (as a percent)	61.00%
Empire State Realty OP \| Other Partners, Company Directors, Members of Senior Management and Other Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
OP units not owned by other partner (as a percent)	39.00%
Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock outstanding (in shares)	171,790,000
Class B Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock outstanding (in shares)	968,000
Number of voting rights (in shares) \| vote	50

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