Liability For Future Policy Benefits (Additional Insurance Reserves) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022	Dec. 31, 2021
Additional Liability, Long-Duration Insurance [Line Items]
Interest accrual	$ 239	$ 205
Balance, including amounts in AOCI, EOP, post-flooring	13,660	12,679
Gross assessments	$ 1,547	$ 1,230
Weighted-average duration of the liability in years (at original discount rate)	22 years	23 years
Weighted-average interest rate (at original discount rate)	3.39%	3.72%
Individual Life
Additional Liability, Long-Duration Insurance [Line Items]
Total balance after reinsurance recoverable	$ 8,176	$ 7,675
Other Businesses | Individual Life
Additional Liability, Long-Duration Insurance [Line Items]
Total balance after reinsurance recoverable	147	165
Total | Individual Life
Additional Liability, Long-Duration Insurance [Line Items]
Balance, including amounts in AOCI, BOP, post-flooring	12,684	11,708
Flooring impact and amounts in AOCI	1,285	(909)
Balance, excluding amounts in AOCI, BOP, pre-flooring	13,969	10,799
Effect of assumption updates			$ 23	$ 2,200
Effect of actual variances from expected experience and other activity			26	(156)
Adjusted balance, BOP			$ 14,018	$ 12,843
Assessment Collected	518	453
Interest accrual	239	205
Benefits paid	(153)	(118)
Balance, excluding amounts in AOCI, EOP, pre-flooring	14,622	13,383
Flooring impact and amounts in AOCI	(1,109)	(869)
Balance, including amounts in AOCI, EOP, post-flooring	13,513	12,514
Less: Reinsurance recoverable	5,484	5,004
Total balance after reinsurance recoverable	$ 8,029	$ 7,510