Future Policy Benefits (Details) (Narrative) - Americas [Member] - Other Segments - USD ($) $ in Millions	Jun. 30, 2024	Jun. 30, 2023
Life Insurance Product Line [Member]
Liability for Future Policy Benefit, by Product Segment [Line Items]
Changes In Cash Flow Assumptions	$ 0	$ 0
Liability for Future Policy Benefit, after Reinsurance	9,165	9,385
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance	(741)	(407)
Insurance, Other
Liability for Future Policy Benefit, by Product Segment [Line Items]
Changes In Cash Flow Assumptions	0	0
Liability for Future Policy Benefit, after Reinsurance	6,388	3,885
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance	$ (849)	$ 0