Derivatives (Credit Risk on Freestanding Derivatives) (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Credit Derivatives [Line Items]
Estimated fair value of derivatives in a net liability position (1)	$ 2,520	$ 1,595
Derivative, Collateral, Right to Reclaim Cash	127	126
Exchange Traded [Member]
Credit Derivatives [Line Items]
Derivative, Collateral, Right to Reclaim Securities	136	185
Fixed maturity securities AFS
Credit Derivatives [Line Items]
Estimated fair value of collateral provided:	2,750	1,591
Derivatives Subject to Credit- Contingent Provisions
Credit Derivatives [Line Items]
Estimated fair value of derivatives in a net liability position (1)	2,360	1,386
Derivatives Subject to Credit- Contingent Provisions | Fixed maturity securities AFS
Credit Derivatives [Line Items]
Estimated fair value of collateral provided:	2,626	1,370
Derivatives Not Subject to Credit- Contingent Provisions
Credit Derivatives [Line Items]
Estimated fair value of derivatives in a net liability position (1)	160	209
Derivatives Not Subject to Credit- Contingent Provisions | Fixed maturity securities AFS
Credit Derivatives [Line Items]
Estimated fair value of collateral provided:	$ 124	$ 221