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Subsequent Events - Monthly Distributions Declared by Company's Board of Directors (Detail) - $ / shares |  |  |  |  |  |  |  |  |  |  |  |  | 1 Months Ended |
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Apr. 05, 2022 | Mar. 31, 2022 | Mar. 25, 2022 | Mar. 23, 2022 | Mar. 04, 2022 | Feb. 28, 2022 | Feb. 24, 2022 | Feb. 18, 2022 | Feb. 04, 2022 | Jan. 31, 2022 | Jan. 26, 2022 | Jan. 21, 2022 | Mar. 31, 2022 | Feb. 28, 2022 | Jan. 31, 2022 | Jan. 11, 2022
Subsequent Event | Series E Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.4140630
Subsequent Event | Series F Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.375
Subsequent Event | Senior Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.2625
Subsequent Event | Series G Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.375000
Subsequent Event | Common Stock and Non-controlling OP Units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.37620
Subsequent Event | Dividend Declared for Month of January |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Record date |  |  |  |  |  |  |  |  |  |  |  | Jan. 21, 2022 |  |  |  |
Payment date |  |  |  |  |  |  |  |  |  | Jan. 31, 2022 |  |  |  |  |  |
Subsequent Event | Dividend Declared for Month of January | Series E Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions (in dollars per share) |  |  |  |  |  |  |  |  |  | $ 0.1380210 |  |  |  |  | $ 0.1380210 |
Subsequent Event | Dividend Declared for Month of January | Series F Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payment date |  |  |  |  |  |  |  |  | Feb. 04, 2022 |  |  |  |  |  |  |
Month in which distribution is payable to holders of record |  |  |  |  |  |  |  |  |  |  | January 26, 2022 |  |  |  |  |
Distributions (in dollars per share) |  |  |  |  |  |  |  |  | $ 0.125 |  |  |  |  |  |  |
Subsequent Event | Dividend Declared for Month of January | Senior Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payment date |  |  |  |  |  |  |  |  | Feb. 04, 2022 |  |  |  |  |  |  |
Month in which distribution is payable to holders of record |  |  |  |  |  |  |  |  |  |  |  |  |  |  | January |
Distributions (in dollars per share) |  |  |  |  |  |  |  |  | $ 0.0875 |  |  |  |  |  |  |
Subsequent Event | Dividend Declared for Month of January | Series G Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions (in dollars per share) |  |  |  |  |  |  |  |  |  | 0.125000 |  |  |  |  | $ 0.125000 |
Subsequent Event | Dividend Declared for Month of January | Common Stock and Non-controlling OP Units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions (in dollars per share) |  |  |  |  |  |  |  |  |  | $ 0.12540 |  |  |  |  | $ 0.12540 |
Scenario, Forecast | Dividend Declared for Month of February |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Record date |  |  |  |  |  |  |  | Feb. 18, 2022 |  |  |  |  |  |  |  |
Payment date |  |  |  |  |  | Feb. 28, 2022 |  |  |  |  |  |  |  |  |  |
Scenario, Forecast | Dividend Declared for Month of February | Series E Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions (in dollars per share) |  |  |  |  |  | $ 0.1380210 |  |  |  |  |  |  |  | $ 0.1380210 |  |
Scenario, Forecast | Dividend Declared for Month of February | Series F Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payment date |  |  |  |  | Mar. 04, 2022 |  |  |  |  |  |  |  |  |  |  |
Month in which distribution is payable to holders of record |  |  |  |  |  |  | February 24, 2022 |  |  |  |  |  |  |  |  |
Distributions (in dollars per share) |  |  |  |  | $ 0.125 |  |  |  |  |  |  |  |  |  |  |
Scenario, Forecast | Dividend Declared for Month of February | Senior Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payment date |  |  |  |  | Mar. 04, 2022 |  |  |  |  |  |  |  |  |  |  |
Month in which distribution is payable to holders of record |  |  |  |  |  |  |  |  |  |  |  |  |  | February |  |
Distributions (in dollars per share) |  |  |  |  | $ 0.0875 |  |  |  |  |  |  |  |  |  |  |
Scenario, Forecast | Dividend Declared for Month of February | Series G Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions (in dollars per share) |  |  |  |  |  | 0.125000 |  |  |  |  |  |  |  | $ 0.125000 |  |
Scenario, Forecast | Dividend Declared for Month of February | Common Stock and Non-controlling OP Units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions (in dollars per share) |  |  |  |  |  | $ 0.12540 |  |  |  |  |  |  |  | $ 0.12540 |  |
Scenario, Forecast | Dividend Declared for Month of March |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Record date |  |  |  | Mar. 23, 2022 |  |  |  |  |  |  |  |  |  |  |  |
Payment date |  | Mar. 31, 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Scenario, Forecast | Dividend Declared for Month of March | Series E Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions (in dollars per share) |  | $ 0.1380210 |  |  |  |  |  |  |  |  |  |  | $ 0.1380210 |  |  |
Scenario, Forecast | Dividend Declared for Month of March | Series F Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payment date | Apr. 04, 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Month in which distribution is payable to holders of record |  |  | March 25, 2022 |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions (in dollars per share) | $ 0.125 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Scenario, Forecast | Dividend Declared for Month of March | Senior Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payment date | Apr. 05, 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Month in which distribution is payable to holders of record |  |  |  |  |  |  |  |  |  |  |  |  | March |  |  |
Distributions (in dollars per share) | $ 0.0875 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Scenario, Forecast | Dividend Declared for Month of March | Series G Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions (in dollars per share) |  | 0.125000 |  |  |  |  |  |  |  |  |  |  | $ 0.125000 |  |  |
Scenario, Forecast | Dividend Declared for Month of March | Common Stock and Non-controlling OP Units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions (in dollars per share) |  | $ 0.12540 |  |  |  |  |  |  |  |  |  |  | $ 0.12540 |  |  |

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