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Shareholders' Equity - Additional Information (Detail) - $ / shares |  |  | 6 Months Ended |
--- | --- | --- | --- | ---
Aug. 01, 2024 | May 13, 2024 | Jun. 30, 2024 | Dec. 31, 2023
Class of Stock [Line Items] |  |  |  |
Preferred stock, shares authorized |  |  | 20,000,000 | 20,000,000
Preferred stock, par value |  |  | $ 1.00 | $ 1.00
Preferred Series E |  |  |  |
Class of Stock [Line Items] |  |  |  |
Preferred stock dividend rate (as a percent) |  |  | 6.45% |
Preferred stock, liquidation preference per share (in USD per share) |  |  | $ 1,000 | 1,000
Preferred stock. dividend rate spread (as a percent) |  |  | 3.87% |
Preferred Series F |  |  |  |
Class of Stock [Line Items] |  |  |  |
Preferred stock dividend rate (as a percent) |  |  | 5.125% |
Preferred stock, liquidation preference per share (in USD per share) |  |  | $ 10,000 | 10,000
Preferred stock. dividend rate spread (as a percent) |  |  | 3.78% |
Preferred Series G |  |  |  |
Class of Stock [Line Items] |  |  |  |
Preferred stock dividend rate (as a percent) |  |  | 5.00% |
Preferred stock, liquidation preference per share (in USD per share) |  |  | $ 10,000 | 10,000
Preferred stock. dividend rate spread (as a percent) |  |  | 3.174% |
Preferred Series G | Subsequent Event [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Preferred stock dividend rate (as a percent) | 7.246% |  |  |
Series H Preferred Stock |  |  |  |
Class of Stock [Line Items] |  |  |  |
Preferred stock dividend rate (as a percent) |  |  | 5.625% |
Preferred stock, liquidation preference per share (in USD per share) |  |  | $ 25 | 25
Preferred stock. dividend rate spread (as a percent) |  |  | 4.28% |
Preferred Series I |  |  |  |
Class of Stock [Line Items] |  |  |  |
Preferred stock dividend rate (as a percent) |  |  | 3.50% |
Preferred stock, liquidation preference per share (in USD per share) |  |  | $ 10,000 | 10,000
Preferred stock. dividend rate spread (as a percent) |  |  | 2.679% |
Series J Preferred Stock |  |  |  |
Class of Stock [Line Items] |  |  |  |
Issuance of Series J preferred stock (in shares) |  | 75,000 |  |
Preferred stock dividend rate (as a percent) |  | 7.50% | 7.50% |
Preferred stock, liquidation preference per share (in USD per share) |  | $ 10,000 | $ 10,000 | $ 10,000

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