Market Risk Benefits (Instrument Specific Credit Risk) (Details) - USD ($) $ in Millions		Dec. 31, 2024	Dec. 31, 2023
Market Risk Benefit [Line Items]
Market Risk Benefit, Asset, Amount	[1]	$ 17	$ 9
Market Risk Benefit, Liability, Amount		223	258
Market Risk Benefit, after Increase (Decrease) from Instrument-Specific Credit Risk		(206)	(249)
Insurance, Other [Member] | Americas [Member] | Other Operating Segment
Market Risk Benefit [Line Items]
Market Risk Benefit, Asset, Amount	[1]	17	9
Market Risk Benefit, Liability, Amount		223	258
Market Risk Benefit, after Increase (Decrease) from Instrument-Specific Credit Risk		$ (206)	$ (249)

[1] Included in Other assets.