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Equity (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions |  | 3 Months Ended
--- | --- | ---
Jan. 23, 2018 | Mar. 31, 2019 | Mar. 31, 2018
Class of Stock [Line Items] |  |  |
Income attributable to noncontrolling interests |  | $ 3,630 | $ 2,359
Series D Cumulative Redeemable Preferred Stock |  |  |
Class of Stock [Line Items] |  |  |
Depositary shares outstanding (in shares) |  | 3.0 |
Depository shares to cumulative redeemable preferred stock ratio |  | 1.00% |
Cumulative redeemable preferred stock liquidation preference (in usd per share) | $ 25.00 |  |
Annual dividend on depositary shares (in usd per share) | $ 1.53125 |  |
Percentage of redeemable preferred stock | 6.125% |  |
Series C Cumulative Preferred Stock |  |  |
Class of Stock [Line Items] |  |  |
Depositary shares outstanding (in shares) |  | 4.2 |
Depository shares to cumulative redeemable preferred stock ratio |  | 1.00% |
Cumulative redeemable preferred stock liquidation preference (in usd per share) |  | $ 25.00 |
Annual dividend on depositary shares (in usd per share) |  | $ 1.71875 |
Percentage of redeemable preferred stock |  | 6.875% |

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- Definition Amount, before tax, of income (loss) attributable to noncontrolling interest. Includes, but is not limited to, income (loss) from continuing operations, discontinued operations and equity method investments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.19) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 + Details
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