Commitments And Contingencies (Other) (Narrative) (Details) $ in Billions |
3 Months Ended |
---|---|
Mar. 31, 2017
USD ($)
property
| |
Property Lock-Ups [Member] | |
Commitments And Contingencies [Line Items] | |
Expiration year | 2016 |
Property Lock-Ups Expired [Member] | |
Commitments And Contingencies [Line Items] | |
Number of properties | property | 102 |
Properties aggregate net book value | $ | $ 1.2 |