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Related Party Transactions Option Properties (Details) (USD $) | 0 Months Ended
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Jul. 15, 2014
Related Party Transaction [Line Items] |
Business Combination, Consideration Transferred | $ 733,600,000 us-gaap_BusinessCombinationConsiderationTransferred1
112 West 34th Street [Member] |
Related Party Transaction [Line Items] |
Business Combination, Consideration Transferred | 423,600,000 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = esrt_A112West34thStreetMember
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable | 229,000,000 us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable / us-gaap_BusinessAcquisitionAxis = esrt_A112West34thStreetMember
Payments to Acquire Businesses, Gross | 106,900,000 us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = esrt_A112West34thStreetMember
112 West 34th Street [Member] | Affiliated Entity [Member] | Option Properties Transaction [Member] |
Related Party Transaction [Line Items] |
Business Combination, Consideration Transferred | 423,600,000 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = esrt_A112West34thStreetMember / us-gaap_RelatedPartyTransactionAxis = esrt_OptionPropertiesTransactionMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_AffiliatedEntityMember
Payments to Acquire Businesses, Gross | 92,400,000 us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = esrt_A112West34thStreetMember / us-gaap_RelatedPartyTransactionAxis = esrt_OptionPropertiesTransactionMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_AffiliatedEntityMember
112 West 34th Street [Member] | Anthony E. Malkin [Member] | Option Properties Transaction [Member] |
Related Party Transaction [Line Items] |
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable | 39,400,000 us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable / us-gaap_BusinessAcquisitionAxis = esrt_A112West34thStreetMember / us-gaap_RelatedPartyTransactionAxis = esrt_OptionPropertiesTransactionMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = esrt_AnthonyE.MalkinMember
112 West 34th Street [Member] | Peter L. Malkin [Member] | Option Properties Transaction [Member] |
Related Party Transaction [Line Items] |
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable | 2,700,000 us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable / us-gaap_BusinessAcquisitionAxis = esrt_A112West34thStreetMember / us-gaap_RelatedPartyTransactionAxis = esrt_OptionPropertiesTransactionMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = esrt_PeterL.MalkinMember
112 West 34th Street [Member] | Malkin Group [Member] | Option Properties Transaction [Member] |
Related Party Transaction [Line Items] |
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable | 44,900,000 us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable / us-gaap_BusinessAcquisitionAxis = esrt_A112West34thStreetMember / us-gaap_RelatedPartyTransactionAxis = esrt_OptionPropertiesTransactionMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = esrt_MalkinGroupMember
Location 1400 Broadway [Member] |
Related Party Transaction [Line Items] |
Business Combination, Consideration Transferred | 310,000,000 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = esrt_Location1400BroadwayMember
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable | 150,300,000 us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable / us-gaap_BusinessAcquisitionAxis = esrt_Location1400BroadwayMember
Payments to Acquire Businesses, Gross | 79,700,000 us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = esrt_Location1400BroadwayMember
Location 1400 Broadway [Member] | Affiliated Entity [Member] | Option Properties Transaction [Member] |
Related Party Transaction [Line Items] |
Business Combination, Consideration Transferred | 310,000,000 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = esrt_Location1400BroadwayMember / us-gaap_RelatedPartyTransactionAxis = esrt_OptionPropertiesTransactionMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_AffiliatedEntityMember
Payments to Acquire Businesses, Gross | 56,600,000 us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = esrt_Location1400BroadwayMember / us-gaap_RelatedPartyTransactionAxis = esrt_OptionPropertiesTransactionMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_AffiliatedEntityMember
Location 1400 Broadway [Member] | Anthony E. Malkin [Member] | Option Properties Transaction [Member] |
Related Party Transaction [Line Items] |
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable | 23,300,000 us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable / us-gaap_BusinessAcquisitionAxis = esrt_Location1400BroadwayMember / us-gaap_RelatedPartyTransactionAxis = esrt_OptionPropertiesTransactionMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = esrt_AnthonyE.MalkinMember
Location 1400 Broadway [Member] | Malkin Group [Member] | Option Properties Transaction [Member] |
Related Party Transaction [Line Items] |
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable | $ 23,500,000 us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable / us-gaap_BusinessAcquisitionAxis = esrt_Location1400BroadwayMember / us-gaap_RelatedPartyTransactionAxis = esrt_OptionPropertiesTransactionMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = esrt_MalkinGroupMember

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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479 + Details
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- Definition Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 + Details
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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