Investments (Borrowed Securities Repurchased Securities And Repurchased Reversed Repurchased Securities) (Details) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021
Securities Financing Transaction, Cost
Securities Financing Transaction [Line Items]
Securities Loaned, Fair Value of Collateral	[1]	$ 59	$ 94
Securities for Reverse Repurchase Agreements	[1]	898	704
Cash	[2]	0	10
Collateralized Agreements		859	279
Cash Received		149	0
Securities Financing Transaction, Fair Value
Securities Financing Transaction [Line Items]
Securities Borrowed	[3]	852	420
Securities Loaned, Fair Value of Collateral	[1]	55	102
Securities Received as Collateral	[4]	66	102
Securities for Reverse Repurchase Agreements	[1]	779	736
Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Securities	[4]	619	728
Cash	[2]	0	10
Collateralized Agreements		693	290
Cash Received		$ 149	$ 0

[1] Securities loaned, pledged or sold to counterparties are included within fixed maturity securities.

[2] A receivable for the cash held by counterparties is included within other assets.

[3] Securities borrowed are not reflected on the condensed consolidated balance sheets. Collateral associated with certain borrowed securities is not included within this table as the collateral pledged to the counterparty is the right to reinsurance treaty cash flows.

[4] Securities received as collateral or purchased from counterparties are not reflected on the condensed consolidated financial statements.