Organization And Basis Of Presentation (Narrative) (Details)
$ in Millions |
3 Months Ended |
|
|
Mar. 31, 2019
USD ($)
ft²
state
property
item
|
Dec. 31, 2018
USD ($)
|
| Real Estate Properties [Line Items] |
|
|
| Percentage of ownership interest |
90.00%
|
89.80%
|
| Number of properties owned or investment interests |
74
|
|
| Number of states where properties are located | state |
4
|
|
| Consolidated joint ventures, total real estate assets | $ |
$ 679.5
|
$ 480.4
|
| Consolidated joint ventures, mortgages | $ |
361.4
|
241.5
|
| Consolidated joint ventures, other liabilities | $ |
$ 22.4
|
$ 23.0
|
| Commercial Properties [Member] |
|
|
| Real Estate Properties [Line Items] |
|
|
| Number of tenants | item |
400
|
|
| Multi-Family Properties [Member] |
|
|
| Real Estate Properties [Line Items] |
|
|
| Number of properties owned or investment interests |
22
|
|
| Number of units | item |
6,879
|
|
| Office [Member] |
|
|
| Real Estate Properties [Line Items] |
|
|
| Number of properties owned or investment interests |
45
|
|
| Aggregate square feet of the property owned or investment interest | ft² |
11,900,000
|
|
| Unconsolidated Joint Venture Office 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 |
200,000
|
|
| Unconsolidated Joint Venture Multi-Family Properties [Member] |
|
|
| Real Estate Properties [Line Items] |
|
|
| Number of properties owned or investment interests |
7
|
|
| Number of units | item |
2,611
|
|
| Unconsolidated Joint Venture Office/Flex Buildings And Hotel [Member] |
|
|
| Real Estate Properties [Line Items] |
|
|
| Number of properties owned or investment interests |
2
|
|
| Parking/Retail [Member] |
|
|
| Real Estate Properties [Line Items] |
|
|
| Number of properties owned or investment interests |
4
|
|
| Aggregate square feet of the property owned or investment interest | ft² |
113,800
|
|
| 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
|
|
| Land [Member] |
|
|
| Real Estate Properties [Line Items] |
|
|
| Number of properties owned or investment interests |
1
|
|