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Preferred Stock - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | May 01, 2024 | Dec. 31, 2023
Class of Stock [Line Items] |  |  |  |  |
Liquidation Amount | $ 438 |  | $ 438 |  |
Carrying Amount | $ 426 |  | $ 426 |  | $ 520
Series D preferred stock redemption |  | $ 494 |  |  |
Preferred stock, issued (in shares) | 16,750 |  | 16,750 |  | 26,750
Noncontrolling interest | $ 295 |  | $ 295 |  | $ 295
Retained Earnings |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Series D preferred stock redemption | $ 7 | $ 0 | $ 7 |  |
Series A |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Liquidation Amount |  |  |  | $ 100 |
Carrying Amount |  |  |  | $ 94 |
Preferred Class A |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Preferred stock, issued (in shares) | 300,000 |  | 300,000 |  |
Preferred stock, liquidation preference per share (in dollars per share) | $ 1,000 |  | $ 1,000 |  |
Basis spread on variable rate |  |  | 1.11161% |  |
Annual Dividend Rate |  |  | 3.75% |  |
Noncontrolling interest | $ 295 |  | $ 295 |  | $ 295
Preferred Class A | Variable Rate Basis Spread, Percentage One |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Basis spread on variable rate |  |  | 0.26161% |  |
Preferred Class A | Variable Rate Basis Spread, Percentage Two |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Basis spread on variable rate |  |  | 0.85% |  |
Preferred Class B | FT Real Estate Securities Company, Inc. |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Preferred stock, liquidation preference per share (in dollars per share) | $ 1,000,000 |  | $ 1,000,000 |  |
Annual Dividend Rate |  |  | 9.50% |  |
Preferred stock issuance (in shares) |  |  | 50 |  |
Preferred Class B | FT Real Estate Securities Company, Inc. | Non Affiliates |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Preferred stock issuance (in shares) |  |  | 47 |  |

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