Changes in LFPBs, ASU 2018-12 Transition (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Jan. 01, 2021	Dec. 31, 2020
Liability for Future Policy Benefit, Activity
Accumulated other comprehensive income (loss)	$ (5,114)	$ (5,931)	$ (199)		$ 5,421
Future policy benefits	32,149	31,146	39,830
Previously Reported
Liability for Future Policy Benefit, Activity
Accumulated other comprehensive income (loss)		(5,282)	3,901
Future policy benefits		41,105	43,589
Accounting Standards Update 2018-12 | Revision of Prior Period, Accounting Standards Update, Adjustment
Liability for Future Policy Benefit, Activity
Accumulated other comprehensive income (loss)		(649)	(4,100)
Future policy benefits		(9,959)	(3,759)
Term and Whole Life Insurance
Liability for Future Policy Benefit, Activity
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance	8,148	8,015	7,877
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change		296	179		100
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change	5,385	5,172	6,253		6,606
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance	24	32	42
Future policy benefits	$ 2,462	$ 2,336	$ 2,999
Term and Whole Life Insurance | Accounting Standards Update 2018-12
Liability for Future Policy Benefit, Activity
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance				$ 3,332
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance				59
Future policy benefits				3,273
Term and Whole Life Insurance | Accounting Standards Update 2018-12 | Previously Reported
Liability for Future Policy Benefit, Activity
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance					2,797
Term and Whole Life Insurance | Accounting Standards Update 2018-12 | Revision of Prior Period, Accounting Standards Update, Adjustment
Liability for Future Policy Benefit, Activity
Accumulated other comprehensive income (loss)				0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change				13
Deferred Profit Liabilities				0
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change				522
Income Annuity [Domain] | Accounting Standards Update 2018-12
Liability for Future Policy Benefit, Activity
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance				4,809
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance				29
Future policy benefits				4,780
Income Annuity [Domain] | Accounting Standards Update 2018-12 | Previously Reported
Liability for Future Policy Benefit, Activity
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance					4,260
Income Annuity [Domain] | Accounting Standards Update 2018-12 | Revision of Prior Period, Accounting Standards Update, Adjustment
Liability for Future Policy Benefit, Activity
Accumulated other comprehensive income (loss)				(203)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change				(168)
Deferred Profit Liabilities				172
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change				748
Structured Settlement and Pension Risk Transfer Annuities [Domain] | Accounting Standards Update 2018-12
Liability for Future Policy Benefit, Activity
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance				11,518
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance				102
Future policy benefits				11,416
Structured Settlement and Pension Risk Transfer Annuities [Domain] | Accounting Standards Update 2018-12 | Previously Reported
Liability for Future Policy Benefit, Activity
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance					$ 10,115
Structured Settlement and Pension Risk Transfer Annuities [Domain] | Accounting Standards Update 2018-12 | Revision of Prior Period, Accounting Standards Update, Adjustment
Liability for Future Policy Benefit, Activity
Accumulated other comprehensive income (loss)				(1,784)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change				200
Deferred Profit Liabilities				217
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change				$ 2,770