Future Policy Benefits (Details) (Narrative) - Other Segments - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Life Insurance Product Line [Member]
Liability for Future Policy Benefit, by Product Segment [Line Items]
Changes In Cash Flow Assumptions	$ 85	$ 222
Future Policy Benefits Remeasurement Gain Loss After Reinsurance	75	259
Insurance, Other [Member]
Liability for Future Policy Benefit, by Product Segment [Line Items]
Changes In Cash Flow Assumptions	78	17
Future Policy Benefits Remeasurement Gain Loss After Reinsurance	$ 78	$ 17