Accrued Expenses and Other Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023	Dec. 31, 2022
Accounts Payable and Accrued Liabilities [Abstract]
Unfunded commitments for proportional amortization investments	$ 1,025	$ 973
Accounts payable	573	509
Employee compensation and benefits	313	409
Reserves for insurance losses and loss adjustment expenses	203	140	$ 152	$ 119
Operating lease liabilities	111	113
Deferred revenue	106	103
Other liabilities	450	479
Total accrued expenses and other liabilities	$ 2,781	$ 2,726
Operating lease, liability, statement of financial position [Extensible Enumeration]	Total accrued expenses and other liabilities	Total accrued expenses and other liabilities