Accrued Expenses and Other Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Dec. 31, 2022
Accounts Payable and Accrued Liabilities [Abstract]
Unfunded commitments for proportional amortization investments	$ 980	$ 973
Accounts payable	545	509
Employee compensation and benefits	359	409
Reserves for insurance losses and loss adjustment expenses	197	140	$ 145	$ 119
Deferred revenue	113	103
Operating lease liabilities	105	113
Other liabilities	470	479
Total accrued expenses and other liabilities	$ 2,769	$ 2,726
Operating lease, liability, statement of financial position [Extensible Enumeration]	Total accrued expenses and other liabilities	Total accrued expenses and other liabilities