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Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2019	Apr. 26, 2019
Entity Registrant Name	Empire State Realty OP, L.P.
Entity Central Index Key	0001553079
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Amendment Flag	false
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Series ES operating partnership units
Entity Common Stock, Shares Outstanding		28,908,143
Series 60 operating partnership units
Entity Common Stock, Shares Outstanding		7,805,484
Series 250 operating partnership units
Entity Common Stock, Shares Outstanding		3,960,627

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