Organization And Basis Of Presentation (Details)
$ in Millions |
6 Months Ended |
|
|
Jun. 30, 2016
USD ($)
ft²
state
property
item
|
Dec. 31, 2015
USD ($)
|
| Real Estate Properties [Line Items] |
|
|
| Number of properties owned or investment interests |
269
|
|
| Aggregate square feet of the property owned or investment interest | ft² |
29,100,000
|
|
| Number of states where properties are located | state |
7
|
|
| Consolidated joint ventures, total real estate assets | $ |
$ 180.0
|
$ 273.4
|
| Consolidated joint ventures, mortgages | $ |
60.5
|
89.5
|
| Consolidated joint ventures, other liabilities | $ |
$ 20.2
|
$ 17.5
|
| Commercial Properties [Member] |
|
|
| Real Estate Properties [Line Items] |
|
|
| Number of tenants | item |
1,700
|
|
| Multi-Family Properties [Member] |
|
|
| Real Estate Properties [Line Items] |
|
|
| Number of properties owned or investment interests |
18
|
|
| Number of units | item |
5,434
|
|
| Office And Office/Flex Buildings [Member] |
|
|
| Real Estate Properties [Line Items] |
|
|
| Number of properties owned or investment interests |
94
|
|
| Office [Member] |
|
|
| Real Estate Properties [Line Items] |
|
|
| Number of properties owned or investment interests |
142
|
|
| Aggregate square feet of the property owned or investment interest | ft² |
23,800,000
|
|
| Office Flex Buildings [Member] |
|
|
| Real Estate Properties [Line Items] |
|
|
| Aggregate square feet of the property owned or investment interest | ft² |
4,800,000
|
|
| Flex Properties [Member] |
|
|
| Real Estate Properties [Line Items] |
|
|
| Number of properties owned or investment interests |
109
|
|
| Unconsolidated Joint Venture Office Buildings [Member] |
|
|
| Real Estate Properties [Line Items] |
|
|
| Number of properties owned or investment interests |
36
|
|
| Aggregate square feet of the property owned or investment interest | ft² |
5,600,000
|
|
| Industrial/Warehouse Facilities [Member] |
|
|
| Real Estate Properties [Line Items] |
|
|
| Number of properties owned or investment interests |
6
|
|
| Aggregate square feet of the property owned or investment interest | ft² |
387,400
|
|
| Unconsolidated Joint Venture Multi-Family Properties [Member] |
|
|
| Real Estate Properties [Line Items] |
|
|
| Number of properties owned or investment interests |
10
|
|
| Number of units | item |
3,587
|
|
| Parking/Retail [Member] |
|
|
| Real Estate Properties [Line Items] |
|
|
| Number of properties owned or investment interests |
5
|
|
| Aggregate square feet of the property owned or investment interest | ft² |
121,700
|
|
| Unconsolidated Joint Venture Parking/Retail Buildings [Member] |
|
|
| Real Estate Properties [Line Items] |
|
|
| Number of properties owned or investment interests |
2
|
|
| Aggregate square feet of the property owned or investment interest | ft² |
81,700
|
|
| Unconsolidated Joint Venture Hotel [Member] |
|
|
| Real Estate Properties [Line Items] |
|
|
| Number of properties owned or investment interests |
1
|
|
| Number of units | item |
350
|
|
| Land [Member] |
|
|
| Real Estate Properties [Line Items] |
|
|
| Number of properties owned or investment interests |
3
|
|