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Capital Structure - Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Millions |  | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Mar. 09, 2023 | Mar. 31, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of preferred stock |  |  |  |  |  |  |  | $ 0 | $ 635 | $ 0
Preferred stock, dividends (in usd per share) |  |  |  |  | $ 51.25 | $ 51.25 | $ 52.96 |  |  |
Preferred stock, dividends | [1] |  |  |  |  |  |  | $ 67 | $ 34 |
Series A Preferred Stock |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Preferred stock, dividends (in usd per share) |  |  |  |  | $ 51.25 | $ 51.25 | $ 52.96 |  |  |
Preferred stock, dividends |  |  | $ 33 | $ 34 | $ 33 |  |  |  |  |
Series A Preferred Stock | Preferred Stock |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Issuance of Series A Preferred Stock (in shares) |  | 650,000 |  |  |  |  |  |  | 650,000 |
Preferred stock, dividend rate (as percent) |  | 10.25% |  |  |  |  |  |  |  |
Proceeds from issuance of preferred stock |  | $ 635 |  |  |  |  |  |  |  |
Preferred stock, liquidation preference (in usd per share) |  | $ 1,000 |  |  |  |  |  |  |  |
Preferred stock, dividend rate, floor |  | 1.00% |  |  |  |  |  |  |  |
Preferred stock, dividend rate, basis spread on variable rate |  | 5.92% |  |  |  |  |  |  |  |
[1] | Dividends per share of Series A Preferred Stock were $51.25 for each of the periods ended September 15 and March 15, 2024 and $52.96 for the period ended September 15, 2023 (f)For further discussion of the Capped Call Options, see Item 15 — Note 15, Capital Structure

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