Transactions with Affiliates - Balance Sheet Transactions with Affiliates (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2020
Related Party Transaction [Line Items]
Fixed maturity available-for-sale securities, at fair value	$ 82,300	$ 99,465
Policy loans	2,463	2,345
DAC, VOBA and DSI	12,418	12,263	$ 12,162
Accrued investment income	982	1,234
Reinsurance recoverables, net of allowance for credit losses	45,110	21,804	20,713
Other assets	10,597	7,677
Future contract benefits	40,174	38,302	$ 42,044
Policyholder account balances	120,316	113,972
Short-term debt	840	562
Long-term debt	2,195	2,269
Funds withheld reinsurance liabilities	13,628	8,255
Other liabilities	12,438	6,251
Accumulated other comprehensive income (loss)	(1,585)	(5,713)
Related Party
Related Party Transaction [Line Items]
Fixed maturity available-for-sale securities, at fair value	1,063	1,216
Policy loans	1	0
DAC, VOBA and DSI	(131)	(138)
Accrued investment income	16	13
Reinsurance recoverables, net of allowance for credit losses	15,563	2,187
Future contract benefits	18	17
Policyholder account balances	352	361
Short-term debt	840	562
Long-term debt	2,195	2,269
Funds withheld reinsurance liabilities	5,862	2,517
Accumulated other comprehensive income (loss)	774	55
Ceded reinsurance contracts \| Related Party
Related Party Transaction [Line Items]
Other assets	642	899
Other liabilities	897
Other liabilities		(31)
Cash management agreement \| Related Party
Related Party Transaction [Line Items]
Other assets	857	124
Accrued inter-company interest payable \| Related Party
Related Party Transaction [Line Items]
Other liabilities	18	15
Service agreement \| Related Party
Related Party Transaction [Line Items]
Other assets	41	6
Other liabilities	37	41
Assumed/ceded reinsurance contracts \| Related Party
Related Party Transaction [Line Items]
Other liabilities	$ 4,387	$ 158

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