Organization - Narrative (Details)
$ in Thousands |
9 Months Ended |
|
|
Sep. 30, 2015
USD ($)
Property
|
Dec. 31, 2014
USD ($)
Property
|
| Summary Of Business And Significant Accounting Policies [Line Items] |
|
|
| Gross investment in real estate properties | $ |
$ 8,256,463
|
$ 8,044,363
|
| Number of real estate properties |
2,634
|
2,509
|
| Owned Properties |
|
|
| Summary Of Business And Significant Accounting Policies [Line Items] |
|
|
| Gross investment in real estate properties | $ |
$ 8,149,519
|
$ 7,934,938
|
| Number of real estate properties |
2,489
|
2,364
|
| Gross investment in real estate, percentage |
98.70%
|
|
| Number of owned real estate properties |
2,489
|
|
| Financed Properties |
|
|
| Summary Of Business And Significant Accounting Policies [Line Items] |
|
|
| Gross investment in real estate properties | $ |
$ 106,944
|
$ 109,425
|
| Number of real estate properties |
145
|
145
|
| Securing mortgage properties, percentage |
1.30%
|
|
| Securing mortgage properties |
145
|
|
| General Partner |
|
|
| Summary Of Business And Significant Accounting Policies [Line Items] |
|
|
| Percentage ownership of operating partnership |
1.00%
|
|
| Limited Partner |
|
|
| Summary Of Business And Significant Accounting Policies [Line Items] |
|
|
| Percentage ownership of operating partnership |
99.00%
|
|