v3.26.1
Fair Value Measurements - Other Financial Instruments (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets $ 151 $ 154
Other investments 56 61
Assets held in separate accounts 116,066 109,772
Derivatives liabilities 204 232
Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity Securities, FV-NI 65 72
Cash and cash equivalents, short-term investments and short-term investments under securities loan agreement 1,081 1,149
Derivative assets 151 154
Short Term Loan Affiliate 351 569
Other investments 56 61
Assets held in separate accounts 116,066 109,772
Debt Securities, Available-for-Sale, Excluding Accrued Interest 22,519 22,838
Short-Term Debt, Fair Value 57 42
Fair Value | Funding agreements without fixed maturities and deferred annuities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Liabilities 31,296 32,344
Fair Value | Funding agreements with fixed maturities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Liabilities 1,683 1,591
Fair Value | Supplementary Contracts and Immediate Annuities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Liabilities 172 167
Fair Value | Embedded derivatives within reinsurance    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 15 23
Fair Value | Stabilizer and MCGs    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivatives liabilities 8 5
Fair Value | Other derivatives    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivatives liabilities 204 232
Fair Value | Mortgages [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Loans 4,375 4,534
Fair Value | Policy loans    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Loans 153 157
Carrying Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity Securities, FV-NI 65 72
Cash and cash equivalents, short-term investments and short-term investments under securities loan agreement 1,081 1,149
Derivative assets 151 154
Short Term Loan Affiliate 351 569
Other investments 56 61
Assets held in separate accounts 116,066 109,772
Debt Securities, Available-for-Sale, Excluding Accrued Interest 22,519 22,838
Short-Term Debt, Fair Value 57 42
Carrying Value | Funding agreements without fixed maturities and deferred annuities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Liabilities 28,541 29,002
Carrying Value | Funding agreements with fixed maturities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Liabilities 1,674 1,573
Carrying Value | Supplementary Contracts and Immediate Annuities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Liabilities 178 177
Carrying Value | Embedded derivatives within reinsurance    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 15 23
Carrying Value | Stabilizer and MCGs    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivatives liabilities 8 5
Carrying Value | Other derivatives    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivatives liabilities 204 232
Carrying Value | Mortgages [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Loans 4,478 4,602
Carrying Value | Policy loans    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Loans $ 153 $ 157