v2.4.0.8

Commitments And Contingencies (Details) (USD $) | 2 Months Ended | 7 Months Ended | 9 Months Ended |  | 5 Months Ended |  | 3 Months Ended | 12 Months Ended |  | 3 Months Ended | 9 Months Ended
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Sep. 30, 2014 | Jul. 28, 2014 | Sep. 30, 2014 | Sep. 18, 2014 | Jun. 09, 2014 767 Venture, LLC [Member] | Sep. 30, 2014 767 Venture, LLC [Member] | Sep. 30, 2014 Lehman [Member] | Dec. 31, 2009 Lehman [Member] | Jan. 10, 2014 Lehman [Member] | Sep. 30, 2014 Lehman [Member] Minimum [Member] | Sep. 30, 2014 Lehman [Member] Maximum [Member] | Sep. 30, 2014 John Hancock Tower [Member] | Sep. 30, 2014 601 Lexington Avenue [Member]
Commitments And Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Letter of credit and performance obligations | $ 19,100,000 |  | $ 19,100,000 |  |  |  |  |  |  |  |  |  |
Maximum funding obligation |  |  |  |  |  | 14,800,000 |  |  |  |  |  |  |
Guarantee Obligation Related To Tenant Re-Leasing Costs |  |  |  |  |  |  |  |  |  |  |  | 28,800,000 |
Maturity Date |  |  |  |  |  |  |  |  |  |  |  | Jan. 06, 2017 |
Bankruptcy claim, amount filed by general creditor |  |  |  |  |  |  |  | 45,300,000 |  |  |  |  |
Bankruptcy claim amount allowed by court to creditor |  |  |  |  |  |  | 37,500,000 |  | 45,200,000 |  |  |  |
Bankruptcy Claims, Amount of Claims Settled |  |  |  | 7,700,000 |  |  |  |  |  |  |  |  |
Bankruptcy claim, price on the private market |  |  |  |  |  |  |  |  |  | 0.25 | 0.26 |  |
Bankruptcy claim, denominator used to evaluate claim price amount |  |  |  |  |  |  | 1.00 |  |  |  |  |  |
Property insurance program per occurrence limits | 1,000,000,000 |  | 1,000,000,000 |  |  | 1,625,000,000 |  |  |  |  |  |  |
Coverage For Acts Of Terrorism Under TRIA Covered in Excess of Amount Covered by IXP |  |  |  |  |  |  |  |  |  |  |  |  | 250,000,000
Coverage for acts of Terrorism certified under TRIA in excess of amount provided by NYXP, LLC, as a direct insurer |  |  |  |  | 1,375,000,000 |  |  |  |  |  |  |  |
Coverage for acts of terrorism certified under TRIA |  |  |  |  | 250,000,000 |  |  |  |  |  |  |  |
Per occurrence limit for NBCR Coverage |  |  | 1,000,000,000 |  |  |  |  |  |  |  |  |  |
Value of program trigger | 100,000,000 |  | 100,000,000 |  |  |  |  |  |  |  |  |  |
Coinsurance of program trigger |  |  | 15.00% |  |  |  |  |  |  |  |  |  |
Deductible in insurance as a percentage of the value of the affected property, San Francisco |  |  | 5.00% |  |  |  |  |  |  |  |  |  |
Per occurrence limit of the earthquake insurance which covers San Francisco region |  |  | 120,000,000 |  |  |  |  |  |  |  |  |  |
Annual aggregate limit of the earthquake insurance which covers San Francisco region |  |  | 120,000,000 |  |  |  |  |  |  |  |  |  |
Amount of earthquake insurance provided by IXP, LLC as direct insurer San Francisco |  |  | 20,000,000 |  |  |  |  |  |  |  |  |  |
Earthquake Coverage Included In Builders Risk Policy For 535 Mission |  |  | 15,000,000 |  |  |  |  |  |  |  |  |  |
Earthquake Coverage Included In Builders Risk Policy For Salesforce Tower | 60,000,000 | 15,000,000 |  |  |  |  |  |  |  |  |  |  |
Operating partnership guarantee to cover liabilities of IXP | $ 20,000,000 |  | $ 20,000,000 |  |  |  |  |  |  |  |  |  |

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- Definition The property insurance program per occurrence limits for 767 Fifth Avenue are $1.625 billion, including coverage for acts of terrorism certified under TRIA, with $1.375 billion of coverage for losses in excess of $250 million being provided by NYXP, LLC, as a direct insurer. + References No definition available. + Details
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- Definition Coverage For Acts Of Terrorism Under TRIA + References No definition available. + Details
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- Definition Earthquake Coverage Included In Builders Risk Policy For 535 Mission + References No definition available. + Details
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- Definition Per occurrence limit for NBCR Coverage + References No definition available. + Details
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- Definition Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 + Details
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