|
Unconsolidated Entities (Details) (USD $)
In Thousands, unless otherwise specified |
Jun. 30, 2012
|
Dec. 31, 2011
|
|---|---|---|
| Summary of investments | ||
| Investments in and advances to unconsolidated entities | $ 2,220,172 | $ 2,857,755 |
|
Unconsolidated co-investment ventures [Member]
|
||
| Summary of investments | ||
| Investments in and advances to unconsolidated entities | 1,943,843 | 2,471,179 |
|
Other joint ventures [Member]
|
||
| Summary of investments | ||
| Investments in and advances to unconsolidated entities | $ 276,329 | $ 386,576 |