Market Risk Benefits (Instrument Specific Credit Risk) (Details) - USD ($) $ in Millions		Jun. 30, 2023	Jun. 30, 2022
Market Risk Benefit [Line Items]
Market Risk Benefit, after Increase (Decrease) from Instrument-Specific Credit Risk		$ (229)	$ (271)
Market Risk Benefit, Asset, Amount	[1]	6	0
Market Risk Benefit, Liability, Amount		235	271
Insurance, Other | Americas [Member] | Other Segments
Market Risk Benefit [Line Items]
Market Risk Benefit, after Increase (Decrease) from Instrument-Specific Credit Risk		(229)	(271)
Market Risk Benefit, Asset, Amount	[1]	6	0
Market Risk Benefit, Liability, Amount		$ 235	$ 271

[1] Included in Other assets