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Accrued Expenses and Other Liabilities (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023 | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | --- | --- | ---
Accounts Payable and Accrued Liabilities [Abstract] |  |  |  |
Unfunded commitments for proportional amortization investments | $ 917 | $ 973 |  |
Accounts payable | 527 | 509 |  |
Employee compensation and benefits | 230 | 409 |  |
Reserves for insurance losses and loss adjustment expenses | 164 | 140 | $ 133 | $ 119
Operating lease liabilities | 120 | 113 |  |
Deferred revenue | 103 | 103 |  |
Other liabilities | 466 | 479 |  |
Total accrued expenses and other liabilities | $ 2,527 | $ 2,726 |  |
Operating lease, liability, statement of financial position [Extensible Enumeration] | Total accrued expenses and other liabilities | Total accrued expenses and other liabilities |  |

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