Investments (Borrowed Securities Repurchased Securities And Repurchased Reversed Repurchased Securities) (Details) - USD ($) $ in Millions		Mar. 31, 2024	Dec. 31, 2023
Securities Financing Transaction [Line Items]
Securities Loaned, Fair Value of Collateral		$ 912	$ 732
Securities Financing Transaction, Fair Value
Securities Financing Transaction [Line Items]
Securities Borrowed	[1]	1,160	1,013
Securities Loaned	[2]	912	732
Cash Collateral for Borrowed Securities	[3]	0	0
Securities Sold under Agreements to Repurchase
Securities Financing Transaction [Line Items]
Securities Borrowed	[1]	732	517
Securities Loaned	[2]	1,568	1,333
Cash Collateral for Borrowed Securities	[3]	$ 719	$ 820

[1] Securities borrowed or received as collateral through securities lending transactions or purchased from counterparties through reverse repurchase transactions are not reflected on the condensed consolidated balance sheets.

[2] Securities loaned or pledged through securities lending transactions or sold to counterparties through repurchase transactions are included within fixed maturity securities. Collateral associated with certain securities lending transactions is not included within this table as the collateral pledged to the counterparty is the right to reinsurance treaty cash flows. Certain securities lending transactions do not require collateral.

[3] A payable for the cash received by the Company is included within other liabilities