Derivative Instruments - Effects of Qualifying and Non-Qualifying Hedges (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Derivative Instruments, Gain (Loss) [Line Items]
Realized gain (loss)	$ 11	$ (434)
Net investment income	1,457	1,346
Interest and debt expense	80	81
Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Realized gain (loss)	11	(434)
Net investment income	1,457	1,346
Interest and debt expense	80	81
Realized Gain (Loss) | Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Interest rate contracts, amount of gain or (loss) reclassified from AOCI into income	0	0
Foreign currency contracts, amount of gain or (loss) reclassified from AOCI into income	3	0
Realized Gain (Loss) | Interest rate contracts | Non-Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges	82	(163)
Realized Gain (Loss) | Foreign currency contracts | Non-Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges	(1)	0
Realized Gain (Loss) | Equity market contracts | Non-Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges	(1,143)	2,134
Realized Gain (Loss) | Credit contracts | Non-Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges	1	0
Realized Gain (Loss) | Reinsurance-related | Non-Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges	(108)	197
Realized Gain (Loss) | RILA, fixed indexed annuity and IUL contracts | Non-Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges	1,654	(1,642)
Net Investment Income | Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Interest rate contracts, amount of gain or (loss) reclassified from AOCI into income	0	0
Foreign currency contracts, amount of gain or (loss) reclassified from AOCI into income	15	15
Net Investment Income | Interest rate contracts | Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Hedged items	11	(18)
Derivatives designated as hedging instruments	(11)	18
Net Investment Income | Interest rate contracts | Non-Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges	0	0
Net Investment Income | Foreign currency contracts | Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Hedged items	1	(1)
Derivatives designated as hedging instruments	(1)	1
Net Investment Income | Foreign currency contracts | Non-Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges	0	0
Net Investment Income | Equity market contracts | Non-Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges	0	0
Net Investment Income | Credit contracts | Non-Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges	0	0
Net Investment Income | Reinsurance-related | Non-Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges	0	0
Net Investment Income | RILA, fixed indexed annuity and IUL contracts | Non-Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges	0	0
Interest and Debt Expense | Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Interest rate contracts, amount of gain or (loss) reclassified from AOCI into income	3	9
Foreign currency contracts, amount of gain or (loss) reclassified from AOCI into income	0	0
Interest and Debt Expense | Interest rate contracts | Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Hedged items	(15)	17
Derivatives designated as hedging instruments	15	(17)
Interest and Debt Expense | Interest rate contracts | Non-Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges	0	0
Interest and Debt Expense | Foreign currency contracts | Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Hedged items	0	0
Derivatives designated as hedging instruments	0	0
Interest and Debt Expense | Foreign currency contracts | Non-Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges	0	0
Interest and Debt Expense | Equity market contracts | Non-Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges	0	0
Interest and Debt Expense | Credit contracts | Non-Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges	0	0
Interest and Debt Expense | Reinsurance-related | Non-Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges	0	0
Interest and Debt Expense | RILA, fixed indexed annuity and IUL contracts | Non-Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges	$ 0	$ 0