Capital - Shares and Units (Narrative) (Details) shares in Thousands	6 Months Ended
Jun. 30, 2026 vote class shares
Operating Partnership
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
OP units not owned by the company (in shares)	110,470
Empire State Realty Trust
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of classes of stock \| class	2
Exchange ratio	0.020
Number of voting rights \| vote	50
Empire State Realty Trust \| Empire State Realty OP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
OP units owned by the company (as percent)	61.00%
Other Partners, Company Directors, Members Of Senior Management And Other Employees \| Empire State Realty OP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
OP units not owned by the company (as percent)	39.00%
Common Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock outstanding (in shares)	171,790
Common Class B
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock outstanding (in shares)	968

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