Represents the total consideration received for the sale of a beneficial interest in real estate property.

No definition available.

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- Definition

Represents the ownership percentage of the joint venture sold to the incoming partner.

+ References

No definition available.

+ Details

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- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

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- Definition

Amount of gain (loss) on sale or disposal of an equity method investment.

+ References

No definition available.

+ Details

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- Definition

Base revenue, as contractually stipulated, for operating and managing another entity's business during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(d))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

+ Details

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- Definition

Mortgage loan related to property sales in noncash investing and financing activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

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- Details

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Investment in Unconsolidated Joint Ventures Investment in Unconsolidated Joint Ventures-Additional Information (Details) (USD $)	3 Months Ended				1 Months Ended
	Mar. 31, 2014 sqft	Mar. 31, 2013	Mar. 31, 2014 Joint Venture	Mar. 31, 2013 Joint Venture	Mar. 31, 2014 West Coast office portfolio	Jan. 31, 2014 21 West 34th Street sqft
Investment in Unconsolidated Joint Ventures
Joint venture ownership percentage sold (percent)					43.74%	50.00%
Consideration for sale of beneficial interest in real estate property					$ 756,000,000	$ 114,900,000
Mortgage loan related to property sales					526,300,000	100,000,000
Equity in net gain on sale of interest in unconsolidated joint venture/real estate	104,640,000	0			85,500,000	20,900,000
Management fees, base revenue			$ 6,300,000	$ 2,600,000
Area of Real Estate Property	34,299,788					91,311