|
Business and Organization (Details) (USD $)
In Billions, unless otherwise specified |
12 Months Ended |
|---|---|
|
Dec. 31, 2013
decades
|
|
| Business and Organization [Abstract] | |
| Investment across a range of real estate sectors over the past two decades (more than $35 billion at December 31, 2012) | $ 35 |
| Period over which the entity has made the investment across a range of real estate (in decades) | 2 |