Investment Information - Other investments by strategy (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Schedule Of Other Investments [Line Items]
Other investments	$ 3,066	$ 2,488
Other investments
Schedule Of Other Investments [Line Items]
Other investments	2,135	1,777
Investment grade fixed income
Schedule Of Other Investments [Line Items]
Other investments	1,055	754
Term loan investments
Schedule Of Other Investments [Line Items]
Other investments	430	272
Lending
Schedule Of Other Investments [Line Items]
Other investments	303	427
Private equity
Schedule Of Other Investments [Line Items]
Other investments	229	182
Credit related funds
Schedule Of Other Investments [Line Items]
Other investments	99	124
Energy
Schedule Of Other Investments [Line Items]
Other investments	$ 19	$ 18