Derivatives (Credit Risk on Freestanding Derivatives) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Credit Derivatives [Line Items]
Collateral Amount Not Provided Due to Downgrade Threshold	$ 15
Estimated fair value of derivatives in a net liability position (1)	2,049	$ 1,595
Derivative assets	11,411	10,466
Derivative liabilities	6,975	3,852
Fixed maturity securities AFS
Credit Derivatives [Line Items]
Estimated fair value of collateral provided:	2,267	1,591
Accrued Liabilities [Member]
Credit Derivatives [Line Items]
Derivative assets	166	130
Derivative liabilities	0	(23)
Derivatives Subject to Credit-Contingent Provisions
Credit Derivatives [Line Items]
Estimated fair value of derivatives in a net liability position (1)	2,049	1,386
Derivatives Subject to Credit-Contingent Provisions | Fixed maturity securities AFS
Credit Derivatives [Line Items]
Estimated fair value of collateral provided:	2,267	1,370
Derivatives Not Subject to Credit-Contingent Provisions
Credit Derivatives [Line Items]
Estimated fair value of derivatives in a net liability position (1)	0	209
Derivatives Not Subject to Credit-Contingent Provisions | Fixed maturity securities AFS
Credit Derivatives [Line Items]
Estimated fair value of collateral provided:	$ 0	$ 221