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Commitments and Contingencies - Schedule of Company's Restricted Assets (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Fair Value, Separate Account Investment [Line Items] |  |  |
Affiliated transactions |  | $ 660.8 | $ 707.1
Third party |  | 2,714.4 | 2,817.7
Letters of credit / guarantees(1) |  | 172.0 | 471.3
Total restricted assets (excluding illiquid assets) |  | 3,547.2 | 3,996.1
Other Investments | [1] | 209.3 | 221.3
Total restricted assets and illiquid assets |  | $ 3,756.5 | $ 4,217.4
Total as percent of invested assets |  | 50.20% | 59.40%
[1] | Other investments includes related party investments of $23.9 million (2022 — $25.3 million) in Apollo Real Estate Fund and $15.9 million (2022 — $12.7 million) in Apollo Origination Partnership.

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