Investments (Borrowed Securities Repurchased Securities And Repurchased Reversed Repurchased Securities) (Details) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Document Period End Date		Sep. 30, 2022
Securities Loaned, Fair Value of Collateral		$ 55	$ 102
Securities Financing Transaction, Cost
Debt Securities, Available-for-sale [Line Items]
Securities Loaned, Fair Value of Collateral	[1]	59	94
Securities for Reverse Repurchase Agreements	[1]	745	704
Cash	[2]	0	10
Collateralized Agreements	[1]	545	279
Cash Received	[3]	66	0
Securities Financing Transaction, Fair Value
Debt Securities, Available-for-sale [Line Items]
Securities Borrowed	[4]	630	420
Securities Loaned, Fair Value of Collateral	[1]	55	102
Securities Received as Collateral	[5]	66	102
Securities for Reverse Repurchase Agreements	[1]	629	736
Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Securities	[5]	620	728
Cash	[2]	0	10
Collateralized Agreements	[1]	459	290
Cash Received	[3]	$ 66	$ 0

[1] Securities loaned and pledged to counterparties are included within fixed maturity securities.

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

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

[4] 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.

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