Insurance Liabilities (Future Policy Benefits - SOP) (Details) - ULSG - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023	Dec. 31, 2022
Additional Liability, Long-Duration Insurance [Line Items]
Additional Liability, Long-Duration Insurance, before Reinsurance, after Discount Rate Change	$ 7,805	$ 7,210	$ 7,607	$ 6,935
Additional Liability, Long-Duration Insurance, Original Discount Rate, before Cash Flow and Reinsurance	8,055	7,421	7,784	7,175
Additional Liability, Long-Duration Insurance, Cumulative Increase (Decrease) of Actual Variance from Expected Experience			67	60
Additional Liability, Long-Duration Insurance, Original Discount Rate, before Reinsurance, after Cash Flow Change			$ 7,851	$ 7,235
Additional Liability, Long-Duration Insurance, Interest Income (Expense)	190	175
Additional Liability, Long-Duration Insurance, Net Premium Collected	215	206
Additional Liability, Long-Duration Insurance, Benefit Payment	(201)	(195)
AOCI, Liability for Future Policy Benefit, before Tax	(250)	(211)
Additional Liability, Long-Duration Insurance, Reinsurance Recoverable, after Allowance	1,466	1,414
Additional Liability, Long-Duration Insurance, after Reinsurance	$ 6,339	$ 5,796
Additional Liability, Long-Duration Insurance, Weighted-Average Duration	6 years 7 months 6 days	6 years 8 months 12 days
Additional Liability, Long-Duration Insurance, Weighted-Average Interest Accretion Rate	4.93%	4.91%
Additional Liability, Long-Duration Insurance, Gross Premium Income	$ 542	$ 531