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Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2017	Jul. 31, 2017
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	Jun. 30, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q2
Entity Filer Category	Large Accelerated Filer
Series ES operating partnership units
Entity Common Stock, Shares Outstanding		34,490,191
Series 60 operating partnership units
Entity Common Stock, Shares Outstanding		9,325,683
Series 250 operating partnership units
Entity Common Stock, Shares Outstanding		4,544,899

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