v3.25.2
Fair Value Measurements - Other Financial Instruments (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets $ 148 $ 239
Other investments 105 94
Assets held in separate accounts 104,149 98,579
Derivatives liabilities 252 268
Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fixed maturities, including securities pledged 21,864 20,134
Equity Securities, FV-NI 60 66
Cash and cash equivalents, short-term investments and short-term investments under securities loan agreement 1,229 1,375
Derivative assets 148 239
Short Term Loan Affiliate 313 100
Other investments 105 94
Assets held in separate accounts 104,149 98,579
Short-term Debt 47 44
Long-term debt 1 1
Fair Value | Funding agreements without fixed maturities and deferred annuities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Liabilities 32,423 27,652
Fair Value | Funding agreements with fixed maturities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Liabilities 875 726
Fair Value | Supplementary contracts, immediate annuities and other    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Liabilities 169 180
Fair Value | Stabilizer Products and Managed Custody Guarantee (MCG) Products [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Liabilities 13 19
Fair Value | Mortgages [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Loans 4,384 3,440
Fair Value | Policy loans    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Loans 159 163
Carrying Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fixed maturities, including securities pledged 21,864 20,134
Equity Securities, FV-NI 60 66
Cash and cash equivalents, short-term investments and short-term investments under securities loan agreement 1,229 1,375
Derivative assets 148 239
Short Term Loan Affiliate 313 100
Other investments 105 94
Assets held in separate accounts 104,149 98,579
Short-term Debt 47 44
Long-term debt 1 1
Carrying Value | Funding agreements without fixed maturities and deferred annuities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Liabilities 29,390 25,769
Carrying Value | Funding agreements with fixed maturities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Liabilities 872 721
Carrying Value | Supplementary contracts, immediate annuities and other    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Liabilities 201 214
Carrying Value | Stabilizer Products and Managed Custody Guarantee (MCG) Products [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Liabilities 13 19
Carrying Value | Mortgages [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Loans 4,504 3,632
Carrying Value | Policy loans    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Loans 159 163
Other derivatives | Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivatives liabilities 252 268
Other derivatives | Carrying Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivatives liabilities 252 268
Reinsurance agreements | Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 16 0
Reinsurance agreements | Carrying Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets $ 16 $ 0