Commitments And Contingencies (Other) (Narrative) (Details) - Property Lock-Ups Expired [Member] $ in Billions |
6 Months Ended |
|---|---|
|
Jun. 30, 2019
USD ($)
property
| |
| Commitments And Contingencies [Line Items] | |
| Number of properties | property | 28 |
| Properties aggregate net book value | $ | $ 1.7 |