Derivative Financial Instruments - Collateral and Credit Default Swaps (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Securities pledged as collateral
Derivatives, Fair Value [Line Items]
Securities held as collateral	$ 11	$ 2
Collateral Securities Repledged, Delivered, or Used	149	124
Over the counter | Cash collateral, included in Payables
Derivatives, Fair Value [Line Items]
Securities held as collateral	127	17
Cleared derivative contract | Cash collateral, included in Payables
Derivatives, Fair Value [Line Items]
Securities held as collateral	$ 61	$ 71