Transactions with Affiliates - Comprehensive Income (Loss) Transactions with Affiliates (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Related Party Transaction [Line Items]
Insurance premiums	$ 9,852	$ 6,352	$ 8,584
Net investment income	5,625	5,107	5,733
Realized gain (loss)	(746)	276	(4,934)
Other revenues	297	553	676
Benefits	5,451	2,100	5,028
Market risk benefit (gain) loss	223	938	1,135
Policyholder liability remeasurement (gain) loss	(99)	(20)	(167)
Interest and debt expense	146	185	190
Related Party
Related Party Transaction [Line Items]
Other revenues	(714)	(475)	(171)
Premiums received on assumed (paid on ceded) reinsurance contracts \| Related Party
Related Party Transaction [Line Items]
Insurance premiums	(2,263)	(5,427)	(498)
Fees for management of general account \| Related Party
Related Party Transaction [Line Items]
Net investment income	(85)	(97)	(156)
Net investment income on ceded funds withheld treaties \| Related Party
Related Party Transaction [Line Items]
Net investment income	(242)	(260)	(238)
Net investment income on inter-company notes \| Related Party
Related Party Transaction [Line Items]
Net investment income	44	63	65
Interest and debt expense	118	146	148
Net investment income associated with cash management agreement \| Related Party
Related Party Transaction [Line Items]
Net investment income	69	59	11
Ceded reinsurance contracts \| Related Party
Related Party Transaction [Line Items]
Benefits	(2,580)	(5,844)	(507)
Commissions and other expenses	(159)	(76)	(13)
Ceded reinsurance contracts \| Reinsurance-related settlements \| Related Party
Related Party Transaction [Line Items]
Realized gain (loss)	9	305	1,717
Ceded reinsurance contracts \| Other gains (losses) \| Related Party
Related Party Transaction [Line Items]
Realized gain (loss)	(341)	289	(9)
Amortization of deferred gain (loss) on reinsurance contracts \| Related Party
Related Party Transaction [Line Items]
Amortization of deferred gain (loss) on business sold through reinsurance	183	167	17
Interest credited on assumed reinsurance contracts (interest recoveries on ceded reinsurance contracts) \| Related Party
Related Party Transaction [Line Items]
Interest credited	(222)	(229)	12
Market risk benefit (gain) loss on ceded reinsurance contracts \| Other gains (losses) \| Related Party
Related Party Transaction [Line Items]
Market risk benefit (gain) loss	149	1,740	1,129
Policyholder liability remeasurement (gain) loss on ceded reinsurance contracts \| Other gains (losses) \| Related Party
Related Party Transaction [Line Items]
Policyholder liability remeasurement (gain) loss	92	209	0
Amortization of deferred loss on reinsurance contracts \| Related Party
Related Party Transaction [Line Items]
Commissions and other expenses	15	5	0
Service agreement payments (receipts) \| Related Party
Related Party Transaction [Line Items]
Commissions and other expenses	$ (6)	$ (7)	$ (17)

The amortization of net deferred gain (loss) on indemnity reinsurance transactions.

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