Separate Account Liability (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2021
Other Liabilities Disclosure [Abstract]
Assets held in separate accounts	$ 81,911	$ 77,639
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets held in separate accounts	81,911	77,639
Liabilities related to separate accounts	81,911	77,639
Retirement
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Liabilities related to separate accounts		75,569	$ 80,106	$ 93,943
Separate Account, Liability, Policyholder Behavior	221	(1,308)
Policyholder Account Balance, Policy Charge	(2)	(8)
Separate Account, Liability, Policy Charge	(106)	(446)
Separate Account, Liability, Increase (Decrease) from Invested Performance	4,422	(16,622)
Separate Account, Liability, Increase (Decrease) from Other Change	0	2
Other Segments
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Liabilities related to separate accounts	1,805	2,070
Wealth Solutions Stabilizer
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Separate Account, Liability, Policyholder Behavior	51
Policyholder Account Balance, Policy Charge	(8)
Wealth Solutions Stabilizer | Retirement
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Liabilities related to separate accounts	7,438	7,196		8,091
Separate Account, Liability, Policyholder Behavior		(68)
Separate Account, Liability, Policy Charge		(34)
Separate Account, Liability, Increase (Decrease) from Invested Performance	199	(794)
Separate Account, Liability, Increase (Decrease) from Other Change	0	1
Deferred Variable Annuity | Retirement
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Liabilities related to separate accounts		68,373	$ 72,668	$ 85,852
Separate Account, Liability, Policyholder Behavior	170	(1,240)
Separate Account, Liability, Policy Charge	(98)	(412)
Separate Account, Liability, Increase (Decrease) from Invested Performance	4,223	(15,828)
Separate Account, Liability, Increase (Decrease) from Other Change	0	1
Cash Surrender Value
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Liabilities related to separate accounts	72,639	68,345
US Treasury and Government
Other Liabilities Disclosure [Abstract]
Assets held in separate accounts	1,308	1,586
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets held in separate accounts	1,308	1,586
Corporate Debt Securities
Other Liabilities Disclosure [Abstract]
Assets held in separate accounts	1,748	1,647
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets held in separate accounts	1,748	1,647
Separate Account, Debt Security
Other Liabilities Disclosure [Abstract]
Assets held in separate accounts	716	660
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets held in separate accounts	716	660
Separate Account, Mortgage-Backed Security
Other Liabilities Disclosure [Abstract]
Assets held in separate accounts	3,395	3,434
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets held in separate accounts	3,395	3,434
Separate Account, Equity Security
Other Liabilities Disclosure [Abstract]
Assets held in separate accounts	74,130	69,774
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets held in separate accounts	74,130	69,774
Separate Account, Cash and Cash Equivalents
Other Liabilities Disclosure [Abstract]
Assets held in separate accounts	530	311
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets held in separate accounts	530	311
Asset-Backed Securities, Securitized Loans and Receivables
Other Liabilities Disclosure [Abstract]
Assets held in separate accounts	84	227
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets held in separate accounts	$ 84	$ 227