Long-duration Contracts - Balances of and Changes in Liability for Future Policy Benefits (Details) - Payout annuities with life contingencies - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Jan. 01, 2022	Dec. 31, 2021
Present value of expected future policy benefits
Beginning balance	$ 36,422	$ 35,278
Effect of changes in discount rate assumptions	9,753	8,833	$ 8,425	$ 0
Beginning balance at original discount rate	50,593	44,348	44,847	35,278
Effect of actual experience compared to expected experience			(36)	(115)
Adjusted balance			44,514	$ 35,163
Issuances	9,120	10,666
Interest accrual	1,194	802
Benefit payments	(2,731)	(2,193)
Foreign exchange	5	(90)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change	(1,509)	0
Ending balance at original discount rate	50,593	44,348
Effect of changes in cash flow assumptions			$ (297)		$ 0
Ending balance	40,840	$ 35,515
Venerable | Reinsurance agreement recapture
Present value of expected future policy benefits
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change	$ (1,509)