Income Taxes - Common and Preferred Stock Distribution (Details) - $ / shares
|
12 Months Ended |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
$ 3.000
|
$ 3.000
|
$ 3.000
|
| Total Distribution per Share |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
3.0000
|
3.0000
|
3.0000
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
1.8436
|
1.8436
|
1.8436
|
| Total Ordinary Dividends |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
2.1384
|
2.3700
|
1.1820
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
1.3140
|
1.8436
|
1.8436
|
| Qualified Dividends |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
0.0000
|
0.3140
|
0.0000
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
0.0000
|
0.2444
|
0.0000
|
| Capital Gain Distributions |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
0.8616
|
0.0000
|
0.0000
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
0.5296
|
0.0000
|
0.0000
|
| Unrecaptured Section 1250 Gain |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
0.4028
|
|
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
0.2476
|
|
|
| Section 199A Dividends |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
2.1384
|
|
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
1.3140
|
|
|
| Nondividend Distributions |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
|
0.6300
|
1.8180
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
|
0.0000
|
0.0000
|
| Installment One | Total Distribution per Share |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
0.7500
|
0.7500
|
0.7500
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
0.4609
|
0.4609
|
0.4609
|
| Installment One | Total Ordinary Dividends |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
0.5346
|
0.5925
|
0.2955
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
0.3285
|
0.4609
|
0.4609
|
| Installment One | Qualified Dividends |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
0.0000
|
0.0785
|
0.0000
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
0.0000
|
0.0611
|
0.0000
|
| Installment One | Capital Gain Distributions |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
0.2154
|
0.0000
|
0.0000
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
0.1324
|
0.0000
|
0.0000
|
| Installment One | Unrecaptured Section 1250 Gain |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
0.1007
|
|
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
0.0619
|
|
|
| Installment One | Section 199A Dividends |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
0.5346
|
|
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
0.3285
|
|
|
| Installment One | Nondividend Distributions |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
|
0.1575
|
0.4545
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
|
0.0000
|
0.0000
|
| Installment Two | Total Distribution per Share |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
0.7500
|
0.7500
|
0.7500
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
0.4609
|
0.4609
|
0.4609
|
| Installment Two | Total Ordinary Dividends |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
0.5346
|
0.5925
|
0.2955
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
0.3285
|
0.4609
|
0.4609
|
| Installment Two | Qualified Dividends |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
0.0000
|
0.0785
|
0.0000
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
0.0000
|
0.0611
|
0.0000
|
| Installment Two | Capital Gain Distributions |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
0.2154
|
0.0000
|
0.0000
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
0.1324
|
0.0000
|
0.0000
|
| Installment Two | Unrecaptured Section 1250 Gain |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
0.1007
|
|
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
0.0619
|
|
|
| Installment Two | Section 199A Dividends |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
0.5346
|
|
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
0.3285
|
|
|
| Installment Two | Nondividend Distributions |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
|
0.1575
|
0.4545
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
|
0.0000
|
0.0000
|
| Installment Three | Total Distribution per Share |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
0.7500
|
0.7500
|
0.7500
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
0.4609
|
0.4609
|
0.4609
|
| Installment Three | Total Ordinary Dividends |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
0.5346
|
0.5925
|
0.2955
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
0.3285
|
0.4609
|
0.4609
|
| Installment Three | Qualified Dividends |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
0.0000
|
0.0785
|
0.0000
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
0.0000
|
0.0611
|
0.0000
|
| Installment Three | Capital Gain Distributions |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
0.2154
|
0.0000
|
0.0000
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
0.1324
|
0.0000
|
0.0000
|
| Installment Three | Unrecaptured Section 1250 Gain |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
0.1007
|
|
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
0.0619
|
|
|
| Installment Three | Section 199A Dividends |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
0.5346
|
|
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
0.3285
|
|
|
| Installment Three | Nondividend Distributions |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
|
0.1575
|
0.4545
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
|
0.0000
|
0.0000
|
| Installment Four | Total Distribution per Share |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
0.7500
|
0.7500
|
0.7500
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
0.4609
|
0.4609
|
0.4609
|
| Installment Four | Total Ordinary Dividends |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
0.5346
|
0.5925
|
0.2955
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
0.3285
|
0.4609
|
0.4609
|
| Installment Four | Qualified Dividends |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
0.0000
|
0.0785
|
0.0000
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
0.0000
|
0.0611
|
0.0000
|
| Installment Four | Capital Gain Distributions |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
0.2154
|
0.0000
|
0.0000
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
0.1324
|
0.0000
|
0.0000
|
| Installment Four | Unrecaptured Section 1250 Gain |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
0.1007
|
|
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
0.0619
|
|
|
| Installment Four | Section 199A Dividends |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
0.5346
|
|
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
$ 0.3285
|
|
|
| Installment Four | Nondividend Distributions |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Common Stock, Dividends declared per share (in dollars per share) |
|
0.1575
|
0.4545
|
| Preferred Stock, Dividends declared per share (in dollars per share) |
|
$ 0.0000
|
$ 0.0000
|
| Capital Stock |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Ordinary income dividend percentage |
71.30%
|
|
|
| Return of capital percentage |
0.00%
|
|
|
| Capital gain percentage |
28.70%
|
|
|
| Qualified dividend income percentage |
0.00%
|
|
|
| Capital gain, percentage subject to maximum 25 percent tax rate |
13.40%
|
|
|
| Capital gain, percentage subject to maximum 20 percent tax rate |
15.30%
|
|
|
| Preferred Stock |
|
|
|
| Dividends Payable [Line Items] |
|
|
|
| Ordinary income dividend percentage |
71.30%
|
|
|
| Return of capital percentage |
0.00%
|
|
|
| Capital gain percentage |
28.70%
|
|
|
| Qualified dividend income percentage |
0.00%
|
|
|
| Capital gain, percentage subject to maximum 25 percent tax rate |
13.40%
|
|
|
| Capital gain, percentage subject to maximum 20 percent tax rate |
15.30%
|
|
|