Statutory Information and Restrictions - Effects on Statutory Surplus Compared to NAIC Statutory Surplus (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Calculation of reserves using the Indiana universal life method
Statutory Accounting Practices [Line Items]
State insurance department, statutory to NAIC, amount of reconciling item	$ (9)	$ (3)
Conservative valuation rate on certain annuities
Statutory Accounting Practices [Line Items]
State insurance department, statutory to NAIC, amount of reconciling item	1	1
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	18	20
Derivative instruments and equity indexed reserves
Statutory Accounting Practices [Line Items]
State insurance department, statutory to NAIC, amount of reconciling item	(260)	(232)
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	170	304
Lesser of LOC and XXX additional reserve as surplus
Statutory Accounting Practices [Line Items]
State insurance department, statutory to NAIC, amount of reconciling item	0	1,722
LLC notes and variable value surplus notes
Statutory Accounting Practices [Line Items]
State insurance department, statutory to NAIC, amount of reconciling item	1,192	1,320
Excess of loss reinsurance agreements
Statutory Accounting Practices [Line Items]
State insurance department, statutory to NAIC, amount of reconciling item	2,601	541
Fixed Income Assets At Book Value
Statutory Accounting Practices [Line Items]
State insurance department, statutory to NAIC, amount of reconciling item	$ 259	$ 0