Business combination excess amount of fair value over carrying value of investment.

No definition available.

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- Definition

Ownership interest percentage in property.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of interest in property, controlled by predecessor.

+ References

No definition available.

+ Details

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- Definition

Percentage of ownership interest held by third party joint venture partner.

+ References

No definition available.

+ Details

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- Definition

Value of equity interests (such as common shares, preferred shares, or partnership interest) issued or issuable to acquire the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(4)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

+ Details

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Period Type:	instant

- Definition

In a business combination in which the amount of net identifiable assets acquired and liabilities assumed exceeds the aggregate consideration transferred or to be transferred (as defined), this element represents the amount of gain recognized by the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 25
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6393-128476

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6527-128477

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (f)(1)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6571-128477

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 25
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6387-128476

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 25
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6396-128476

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The net gains or losses recognized for each transaction with the acquiree that was recognized separately from the acquisition of assets and assumptions of liabilities in the business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)(3)
-URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463

+ Details

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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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- Details

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- Details

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- Details

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- Details

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Investments in Unconsolidated Joint Ventures - Additional Information (Details) - USD ($)	1 Months Ended
	Dec. 31, 2014	Dec. 31, 2015	Nov. 23, 2014
712 Fifth Avenue [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method ownership percentage		50.00%
712 Fifth Avenue [Member] \| Predecessor [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method ownership percentage		50.00%
Oder-Center, Germany [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method ownership percentage		9.50%
1325 Avenue of the Americas [Member]
Schedule Of Equity Method Investments [Line Items]
Percentage of ownership interest held by third party joint venture			50.00%
Equity interest acquired by payable in shares, value			$ 130,381,000
Property ownership, percentage		100.00%
Gain (loss) on investments	$ 239,716,000
Excess of fair value over the carrying amount of investment	175,917,000
Purchase gain	$ 63,799,000
1325 Avenue of the Americas [Member] \| Predecessor [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method ownership percentage			50.00%
900 Third Avenue [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method ownership percentage			11.80%
Property ownership, percentage		100.00%
Percentage of interest in property, controlled by predecessor			88.20%