Noncontrolling Interests (Property Partnerships) (Narrative) (Details) (USD $)
|
6 Months Ended | 0 Months Ended | |||||||
---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2014
|
Jun. 30, 2013
|
Dec. 31, 2013
|
Feb. 26, 2013
Salesforece Tower (formerly Transbay Tower) [Member]
|
Feb. 07, 2013
Salesforece Tower (formerly Transbay Tower) [Member]
|
May 31, 2013
767 Fifth Avenue (The GM Building) [Member]
|
May 31, 2013
767 Fifth Avenue (The GM Building) [Member]
partners
|
Oct. 09, 2013
Time Square Tower [Member]
sqft
|
Feb. 26, 2013
Company [Member]
Salesforece Tower (formerly Transbay Tower) [Member]
|
|
Noncontrolling Interest [Line Items] | |||||||||
Property partnerships | $ 721,096,000 | $ 726,132,000 | |||||||
Partners Joint Venture Ownership Percentage | 5.00% | 50.00% | 40.00% | ||||||
Ownership Percentage | 95.00% | ||||||||
Number of Joint Venture Partners | 2 | ||||||||
Noncontrolling interest recorded upon consolidation | 0 | 483,488,000 | 480,900,000 | ||||||
maximum percentage of construction costs to allow partner to have a loan | 50.00% | ||||||||
Portion of total costs partner can require the company to fund | 2.50% | ||||||||
portion of partners equity that can be funded by the company | 50.00% | ||||||||
ownership interest sold (percent) | 45.00% | ||||||||
Net Contractual Sales Price | 684,000,000 | ||||||||
Proceeds from sale of an interest in a real estate asset | 673,100,000 | ||||||||
Net Rentable Area (in sf) | 1,246,000 | ||||||||
Portion allocation to noncontrolling interest based on carrying value of the total equity of the property prior to the sale | $ 243,500,000 |