Investment Information - Restricted assets (Details) - USD ($) $ in Millions		Sep. 30, 2024	Dec. 31, 2023
Restricted Assets [Line Items]
Restricted assets		$ 13,321	$ 9,932
Collateral or guarantees - affiliated transactions
Restricted Assets [Line Items]
Restricted assets		5,306	4,854
Collateral or guarantees - third party agreements
Restricted Assets [Line Items]
Restricted assets		5,679	2,869
Deposits with US regulatory authorities
Restricted Assets [Line Items]
Restricted assets		883	833
Other
Restricted Assets [Line Items]
Restricted assets	[1]	$ 1,453	$ 1,376

[1] Primarily includes Funds at Lloyds, deposits with non-U.S. regulatory authorities and other restricted assets