Segment Information (Premiums, Universal Life and Investment-Type Product Policy Fees and Other Revenues by Major Product Group) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Total premiums, universal life and investment-type product policy fees and other revenues	$ 3,606	$ 4,007	$ 3,877
Annuity products
Segment Reporting Information [Line Items]
Total premiums, universal life and investment-type product policy fees and other revenues	2,372	2,640	2,448
Life insurance products
Segment Reporting Information [Line Items]
Total premiums, universal life and investment-type product policy fees and other revenues	1,227	1,359	1,418
Other products
Segment Reporting Information [Line Items]
Total premiums, universal life and investment-type product policy fees and other revenues	$ 7	$ 8	$ 11