Statutory Information and Restrictions - Effects on Statutory Surplus Compared to NAIC Statutory Surplus (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Calculation of reserves using the Indiana universal life method
Statutory Accounting Practices [Line Items]
State insurance department, statutory to NAIC, amount of reconciling item	$ (1)	$ 3
Conservative valuation rate on certain annuities
Statutory Accounting Practices [Line Items]
State insurance department, statutory to NAIC, amount of reconciling item	(1)	(36)
Calculation of reserves using continuous CARVM
Statutory Accounting Practices [Line Items]
State insurance department, statutory to NAIC, amount of reconciling item	(1)	(1)
Conservative Reg 213 reserves on variable annuity and individual life contracts
Statutory Accounting Practices [Line Items]
State insurance department, statutory to NAIC, amount of reconciling item	(31)	(37)
Derivative instruments and equity indexed reserves
Statutory Accounting Practices [Line Items]
State insurance department, statutory to NAIC, amount of reconciling item	(170)	14
Assets in group fixed annuity contracts held at general account balances
Statutory Accounting Practices [Line Items]
State insurance department, statutory to NAIC, amount of reconciling item	332	436
Lesser of LOC and XXX additional reserve as surplus
Statutory Accounting Practices [Line Items]
State insurance department, statutory to NAIC, amount of reconciling item	1,776	1,838
LLC notes and variable value surplus notes
Statutory Accounting Practices [Line Items]
State insurance department, statutory to NAIC, amount of reconciling item	1,444	1,547
Excess of loss reinsurance agreements
Statutory Accounting Practices [Line Items]
State insurance department, statutory to NAIC, amount of reconciling item	$ 563	$ 549