Policyholder Account Balances - Schedule of Policyholder Account Balances (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Policyholder Account Balance [Line Items]
Policyholder account balances	$ 126,197	$ 120,737
Variable Annuities
Policyholder Account Balance [Line Items]
Policyholder account balances	35,267	29,141	$ 22,184
Fixed Annuities
Policyholder Account Balance [Line Items]
Policyholder account balances	25,963	25,355	23,365
UL and Other
Policyholder Account Balance [Line Items]
Policyholder account balances	36,599	37,180	37,694
Retirement Plan Services
Policyholder Account Balance [Line Items]
Policyholder account balances	23,619	23,784	$ 25,138
Other
Policyholder Account Balance [Line Items]
Policyholder account balances	4,749	5,277
Other | Reinsurance Agreement
Policyholder Account Balance [Line Items]
Policyholder account balances	$ 4,400	$ 4,900