|
Noncontrolling Interests (Property Partnerships) (Narrative) (Details) (USD $)
|
0 Months Ended | ||||
|---|---|---|---|---|---|
|
Mar. 31, 2013
|
Dec. 31, 2012
|
Mar. 26, 2013
Transbay Tower [Member]
floor
sqft
|
Feb. 26, 2013
Transbay Tower [Member]
|
Feb. 07, 2013
Transbay Tower [Member]
|
|
| Noncontrolling Interest [Line Items] | |||||
| Property partnerships | $ 8,273,000 | $ (1,964,000) | |||
| Partners Joint Venture Ownership Percentage | 5.00% | 50.00% | |||
| Ownership Percentage | 95.00% | 95.00% | |||
| Number of floors real estate | 60 | ||||
| Net Rentable Area | 1,400,000 | ||||
| Payments to Acquire Land | $ 192,000,000 | ||||