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Commitments and Contingencies - Litigation (Details)	1 Months Ended
	Oct. 31, 2014 participant
Predecessor | New York State Supreme Court, New York County
Loss Contingencies [Line Items]
Number of plaintiffs opting out of settlement (participant)	12

X

- Definition

Loss Contingency, Number of Plaintiffs Opting Out of Settlement

+ References

No definition available.

+ Details

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Namespace Prefix:	esrt_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_StatementScenarioAxis=us-gaap_PredecessorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_LitigationCaseAxis=esrt_NewYorkStateSupremeCourtNewYorkCountyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: