Investment Information - Other investments by strategy (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Schedule Of Other Investments [Line Items]
Other investments	$ 2,488	$ 1,644
Other investments
Schedule Of Other Investments [Line Items]
Other investments	1,777	1,043
Lending
Schedule Of Other Investments [Line Items]
Other investments	427	406
Investment grade fixed income
Schedule Of Other Investments [Line Items]
Other investments	754	271
Term loan investments
Schedule Of Other Investments [Line Items]
Other investments	272	164
Private equity
Schedule Of Other Investments [Line Items]
Other investments	182	123
Credit related funds
Schedule Of Other Investments [Line Items]
Other investments	124	56
Energy
Schedule Of Other Investments [Line Items]
Other investments	$ 18	$ 23