Transactions With Affiliates (Balance Sheet Transactions With Affiliates) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Accrued Inter-Company Interest Receivable [Member] | Accrued Investment Income [Member]
Related Party Transaction [Line Items]
Assets	$ 11	$ 4
Accrued Inter-Company Interest Receivable [Member] | Other Liabilities [Member]
Related Party Transaction [Line Items]
Liabilities	4	4
Ceded Reinsurance Contracts [Member] | Deferred Acquisition Costs And Value Of Business Acquired [Member]
Related Party Transaction [Line Items]
Assets	(150)	(141)
Ceded Reinsurance Contracts [Member] | Reinsurance Recoverables [Member]
Related Party Transaction [Line Items]
Assets	2,867	2,701
Ceded Reinsurance Contracts [Member] | Reinsurance Related Embedded Derivatives [Member]
Related Party Transaction [Line Items]
Liabilities	368	145
Ceded Reinsurance Contracts [Member] | Other Assets [Member]
Related Party Transaction [Line Items]
Assets	529	221
Ceded Reinsurance Contracts [Member] | Other Liabilities [Member]
Related Party Transaction [Line Items]
Liabilities	2,124	(287)
Ceded Reinsurance Contracts [Member] | Other Contract Holder Funds [Member]
Related Party Transaction [Line Items]
Liabilities	(37)	(34)
Ceded Reinsurance Contracts [Member] | Funds Withheld Reinsurance Liabilities [Member]
Related Party Transaction [Line Items]
Liabilities	4,971	5,233
Cash Management Agreement [Member] | Other Assets [Member]
Related Party Transaction [Line Items]
Assets	3,854	2,568
Service Agreement [Member] | Other Assets [Member]
Related Party Transaction [Line Items]
Assets	64	34
Service Agreement [Member] | Other Liabilities [Member]
Related Party Transaction [Line Items]
Liabilities	35	28
Assumed Reinsurance Contracts [Member] | Future Contract Benefits [Member]
Related Party Transaction [Line Items]
Liabilities	21	26
Assumed Reinsurance Contracts [Member] | Other Contract Holder Funds [Member]
Related Party Transaction [Line Items]
Liabilities	364	387
Inter-Company Debt [Member] | Fixed Maturity AFS Securities [Member]
Related Party Transaction [Line Items]
Assets	1,474	1,514
Inter-Company Debt [Member] | Short-term Debt [Member]
Related Party Transaction [Line Items]
Liabilities	1,084	497
Inter-Company Debt [Member] | Long-term Debt [Member]
Related Party Transaction [Line Items]
Liabilities	$ 2,334	$ 2,412