Derivative Instruments - Effects of Qualifying and Non-Qualifying Hedges (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Derivative Instruments, Gain (Loss) [Line Items]
Realized gain (loss)	$ (434)	$ (828)
Net investment income	1,346	1,466
Interest and debt expense	81	83
Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Realized gain (loss)	(434)	(828)
Net investment income	1,346	1,466
Interest and debt expense	81	83
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	0	2
Realized Gain (Loss) | Interest rate contracts | Non-Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges	(163)	332
Realized Gain (Loss) | Foreign currency contracts | Non-Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges	0	(1)
Realized Gain (Loss) | Equity market contracts | Non-Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges	2,134	(53)
Realized Gain (Loss) | Commodity contracts | Non-Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges	0	11
Realized Gain (Loss) | Credit contracts | Non-Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges	0	(1)
Realized Gain (Loss) | Reinsurance-related | Non-Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges	197	(49)
Realized Gain (Loss) | RILA, fixed indexed annuity and IUL contracts | Non-Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges	(1,642)	(713)
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	14
Net Investment Income | Interest rate contracts | Qualifying Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Hedged items	(18)	16
Derivatives designated as hedging instruments	18	(16)
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)	0
Derivatives designated as hedging instruments	1	0
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 | Commodity 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	9	6
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	17	(21)
Derivatives designated as hedging instruments	(17)	21
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 | Commodity 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