Insurance Liabilities (Obligations Under Funding Agreements - Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Line of Credit Facility [Line Items]
Outstanding funding agreements to certain SPEs	$ 5,500	$ 5,500
Outstanding funding agreements to certain SPEs - Inactive	525	525
Federal Home Loan Bank of Atlanta
Line of Credit Facility [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances	4,400	3,900
Farmer Mac Funding Agreements [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Amount Outstanding During Period	$ 700	$ 700