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Equity Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions |  |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Sep. 23, 2019 | Sep. 17, 2019 | Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Class of Stock [Line Items] |  |  |  |  |  |
Income attributable to noncontrolling interests |  |  | $ (3,102) | $ (3,547) | $ (10,250) | $ (9,265)
Series D Cumulative Redeemable Preferred Stock |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Depositary shares outstanding (in shares) |  |  | 3.0 |  | 3.0 |
Depository shares to cumulative redeemable preferred stock ratio |  |  |  |  | 1.00% |
Cumulative redeemable preferred stock liquidation preference (in usd per share) |  |  | $ 25.00 |  | $ 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 |  | 4.2 |
Depository shares to cumulative redeemable preferred stock ratio |  |  |  |  | 1.00% |
Cumulative redeemable preferred stock liquidation preference (in usd per share) |  |  | $ 25.00 |  | $ 25.00 |
Annual dividend on depositary shares (in usd per share) |  |  |  |  | $ 1.71875 |
Percentage of redeemable preferred stock |  |  |  |  | 6.875% |
Series E Cumulative Redeemable Preferred Stock |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Depositary shares outstanding (in shares) | 0.4 | 4.0 |  |  |  |
Depository shares to cumulative redeemable preferred stock ratio |  |  |  |  | 1.00% |
Cumulative redeemable preferred stock liquidation preference (in usd per share) |  |  | $ 25.00 |  | $ 25.00 |
Annual dividend on depositary shares (in usd per share) |  |  |  |  | $ 1.50 |
Percentage of redeemable preferred stock |  | 6.00% |  |  | 6.00% |
Proceeds from shares sold | $ 9,500 | $ 96,800 |  |  |  |

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