Investments - Summary of Real Estate and Loan Activity, Net of Accumulated Depreciation and Amortization (Details)
$ in Thousands |
9 Months Ended |
|
Sep. 30, 2017
USD ($)
Property
|
|---|
| Number of Properties |
|
| Gross balance, December 31, 2016 (in properties) | Property |
2,615
|
| Acquisitions/improvements (in properties) | Property |
58
|
| Dispositions of real estate (in properties) | Property |
(161)
|
| Principal payments and payoffs (in properties) | Property |
(1)
|
| Impairments (in properties) | Property |
0
|
| Write-off of gross lease intangibles (in properties) | Property |
0
|
| Loan premium amortization and other (in properties) | Property |
0
|
| Gross balance, September 30, 2017 (in properties) | Property |
2,511
|
| Dollar Amount of Investments |
|
| Gross balance, December 31, 2016 |
$ 8,247,654
|
| Acquisitions/improvements |
333,331
|
| Dispositions of real estate |
(392,504)
|
| Principal payments and payoffs |
(7,817)
|
| Impairments |
(88,109)
|
| Write-off of gross lease intangibles |
(64,766)
|
| Loan premium amortization and other |
(5,977)
|
| Gross balance, September 30, 2017 |
8,021,812
|
| Accumulated depreciation and amortization |
(1,234,978)
|
| Other |
647
|
| Net balance, September 30, 2017 |
$ 6,787,481
|
| Owned Properties |
|
| Number of Properties |
|
| Gross balance, December 31, 2016 (in properties) | Property |
2,541
|
| Acquisitions/improvements (in properties) | Property |
43
|
| Dispositions of real estate (in properties) | Property |
(161)
|
| Principal payments and payoffs (in properties) | Property |
0
|
| Impairments (in properties) | Property |
0
|
| Write-off of gross lease intangibles (in properties) | Property |
0
|
| Loan premium amortization and other (in properties) | Property |
0
|
| Gross balance, September 30, 2017 (in properties) | Property |
2,423
|
| Dollar Amount of Investments |
|
| Gross balance, December 31, 2016 |
$ 8,181,076
|
| Acquisitions/improvements |
314,141
|
| Dispositions of real estate |
(392,504)
|
| Principal payments and payoffs |
0
|
| Impairments |
(88,109)
|
| Write-off of gross lease intangibles |
(64,766)
|
| Loan premium amortization and other |
(4,847)
|
| Gross balance, September 30, 2017 |
7,944,991
|
| Accumulated depreciation and amortization |
(1,234,978)
|
| Other |
647
|
| Net balance, September 30, 2017 |
$ 6,710,660
|
| Financed Properties |
|
| Number of Properties |
|
| Gross balance, December 31, 2016 (in properties) | Property |
74
|
| Acquisitions/improvements (in properties) | Property |
15
|
| Dispositions of real estate (in properties) | Property |
0
|
| Principal payments and payoffs (in properties) | Property |
(1)
|
| Impairments (in properties) | Property |
0
|
| Write-off of gross lease intangibles (in properties) | Property |
0
|
| Loan premium amortization and other (in properties) | Property |
0
|
| Gross balance, September 30, 2017 (in properties) | Property |
88
|
| Dollar Amount of Investments |
|
| Gross balance, December 31, 2016 |
$ 66,578
|
| Acquisitions/improvements |
19,190
|
| Dispositions of real estate |
0
|
| Principal payments and payoffs |
(7,817)
|
| Impairments |
0
|
| Write-off of gross lease intangibles |
0
|
| Loan premium amortization and other |
(1,130)
|
| Gross balance, September 30, 2017 |
76,821
|
| Accumulated depreciation and amortization |
0
|
| Other |
0
|
| Net balance, September 30, 2017 |
$ 76,821
|