Description of Business and Organization (Details) ft² in Millions	6 Months Ended
	Jun. 30, 2025 ft² office_property property_unit parcel
Empire State Realty OP \| Empire State Realty Trust
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
OP units owned by the company (as a percent)	60.80%
Office Building
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Area of real estate property (in square feet)	7.8
Number of properties \| office_property	10
Office Building \| Manhattan
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Area of real estate property (in square feet)	7.6
Number of properties \| office_property	9
Retail Site
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Area of real estate property (in square feet)	0.8
Retail Site \| Manhattan
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Area of real estate property (in square feet)	0.5
Multifamily \| New York City
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of property units \| property_unit	743
Long-term Ground Leasehold Interests
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of properties \| parcel	3