v3.25.4
Fair Value Measurements - Quantitative information about level 3 fair value measurements (Details)
$ in Millions
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Bonds available-for-sale [1] $ 189,381 $ 170,840  
Market risk benefit assets 2,392 1,332  
Market risk benefit liabilities, at fair value 7,309 5,616  
Embedded derivatives within policyholder contract deposits 16,000 11,800  
Policyholder contract deposit $ 188,876 $ 173,695 $ 162,050
Minimum | Equity volatility      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.0585 0.0585  
Minimum | Base lapse rate      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.0016 0.0016  
Minimum | Dynamic lapse multiplier      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.2000 0.2000  
Minimum | Mortality multiplier      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.3825 0.3825  
Minimum | Utilization      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.8000 0.8000  
Minimum | Equity / interest-rate correlation      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.0000 0.0000  
Minimum | NPA      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input   0.0027  
Maximum | Equity volatility      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.4585 0.4605  
Maximum | Base lapse rate      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.2880 0.2880  
Maximum | Dynamic lapse multiplier      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 1.8618 1.8618  
Maximum | Mortality multiplier      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 1.6001 1.6001  
Maximum | Utilization      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 1.0000 1.0000  
Maximum | Equity / interest-rate correlation      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.0630 0.0630  
Maximum | NPA      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input   0.0265  
Level 3      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefit assets $ 2,392 $ 1,332  
Market risk benefit liabilities, at fair value 7,300 5,600  
Obligations of states, municipalities and political subdivisions      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Bonds available-for-sale $ 4,486 $ 4,661  
Obligations of states, municipalities and political subdivisions | Minimum | Yield      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.0562 0.0553  
Obligations of states, municipalities and political subdivisions | Maximum | Yield      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.0587 0.0588  
Obligations of states, municipalities and political subdivisions | Weighted-average | Yield      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.0574 0.0570  
Obligations of states, municipalities and political subdivisions | Level 3      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Bonds available-for-sale $ 723 $ 746  
Corporate debt      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Bonds available-for-sale $ 122,071 $ 106,478  
Corporate debt | Minimum | Yield      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.0492 0.0494  
Corporate debt | Maximum | Yield      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.0762 0.1038  
Corporate debt | Weighted-average | Yield      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.0580 0.0735  
Corporate debt | Level 3      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Bonds available-for-sale $ 701 $ 1,822  
RMBS      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Bonds available-for-sale $ 16,350 $ 15,784  
RMBS | Minimum | Yield      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.0517 0.0575  
RMBS | Minimum | Prepayment speed      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.0411 0.0392  
RMBS | Minimum | Default rate      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.0039 0.0057  
RMBS | Minimum | Loss severity      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.3809 0.4019  
RMBS | Maximum | Yield      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.0639 0.0690  
RMBS | Maximum | Prepayment speed      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.0762 0.0891  
RMBS | Maximum | Default rate      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.0198 0.0232  
RMBS | Maximum | Loss severity      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.8411 0.8078  
RMBS | Weighted-average | Yield      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.0578 0.0633  
RMBS | Weighted-average | Prepayment speed      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.0587 0.0642  
RMBS | Weighted-average | Default rate      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.0118 0.0145  
RMBS | Weighted-average | Loss severity      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.6110 0.6049  
RMBS | Level 3      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Bonds available-for-sale $ 2,847 $ 2,892  
CLO | Minimum | Yield      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.0502 0.0613  
CLO | Maximum | Yield      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.0632 0.0740  
CLO | Weighted-average | Yield      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.0567 0.0677  
CLO | Level 3      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Bonds available-for-sale $ 1,939 $ 2,104  
ABS | Minimum | Yield      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.0464 0.0510  
ABS | Maximum | Yield      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.0724 0.0783  
ABS | Weighted-average | Yield      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.0594 0.0647  
ABS | Level 3      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Bonds available-for-sale $ 18,129 $ 15,888  
CMBS      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Bonds available-for-sale $ 9,307 $ 9,577  
CMBS | Minimum | Yield      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.0380 0.0480  
CMBS | Maximum | Yield      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.1992 0.2087  
CMBS | Weighted-average | Yield      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.1158 0.1256  
CMBS | Level 3      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Bonds available-for-sale $ 696 $ 607  
Market risk benefit assets | Minimum | NPA      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.0015    
Market risk benefit assets | Maximum | NPA      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt securities, available-for-sale, measurement input 0.0213    
Variable annuities guaranteed benefits | Minimum | Equity volatility      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.0585 0.0585  
Variable annuities guaranteed benefits | Minimum | Base lapse rate      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.0016 0.0016  
Variable annuities guaranteed benefits | Minimum | Dynamic lapse multiplier      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.2000 0.2000  
Variable annuities guaranteed benefits | Minimum | Mortality multiplier      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.3825 0.3825  
Variable annuities guaranteed benefits | Minimum | Utilization      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.8000 0.8000  
Variable annuities guaranteed benefits | Minimum | Equity / interest-rate correlation      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.0000 0.0000  
Variable annuities guaranteed benefits | Minimum | NPA      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.0015 0.0027  
Variable annuities guaranteed benefits | Maximum | Equity volatility      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.4585 0.4605  
Variable annuities guaranteed benefits | Maximum | Base lapse rate      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.2880 0.2880  
Variable annuities guaranteed benefits | Maximum | Dynamic lapse multiplier      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 1.8618 1.8618  
Variable annuities guaranteed benefits | Maximum | Mortality multiplier      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 1.6001 1.6001  
Variable annuities guaranteed benefits | Maximum | Utilization      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 1.0000 1.0000  
Variable annuities guaranteed benefits | Maximum | Equity / interest-rate correlation      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.0630 0.0630  
Variable annuities guaranteed benefits | Maximum | NPA      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.0213 0.0265  
Variable annuities guaranteed benefits | Level 3      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefit liabilities, at fair value $ 1,651 $ 1,424  
Fixed annuities guaranteed benefits | Minimum | Base lapse rate      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.0020 0.0020  
Fixed annuities guaranteed benefits | Minimum | Dynamic lapse multiplier      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.2000 0.2000  
Fixed annuities guaranteed benefits | Minimum | Mortality multiplier      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.4026 0.4026  
Fixed annuities guaranteed benefits | Minimum | Utilization      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.9000 0.9000  
Fixed annuities guaranteed benefits | Minimum | NPA      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.0016 0.0027  
Fixed annuities guaranteed benefits | Maximum | Base lapse rate      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.1575 0.1575  
Fixed annuities guaranteed benefits | Maximum | Dynamic lapse multiplier      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 1.8618 1.8618  
Fixed annuities guaranteed benefits | Maximum | Mortality multiplier      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 1.6843 1.6843  
Fixed annuities guaranteed benefits | Maximum | Utilization      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.9750 0.9750  
Fixed annuities guaranteed benefits | Maximum | NPA      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.0213 0.0265  
Fixed annuities guaranteed benefits | Level 3      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefit liabilities, at fair value $ 1,817 $ 1,359  
Fixed index annuities guaranteed benefits | Minimum | Equity volatility      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.0585 0.0585  
Fixed index annuities guaranteed benefits | Minimum | Base lapse rate      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.0020 0.0020  
Fixed index annuities guaranteed benefits | Minimum | Dynamic lapse multiplier      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.2000 0.2000  
Fixed index annuities guaranteed benefits | Minimum | Mortality multiplier      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.2413 0.2413  
Fixed index annuities guaranteed benefits | Minimum | Utilization      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.6000 0.6000  
Fixed index annuities guaranteed benefits | Minimum | Option budget      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.0000 0.0000  
Fixed index annuities guaranteed benefits | Minimum | Equity / interest-rate correlation      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.0000 0.0000  
Fixed index annuities guaranteed benefits | Minimum | NPA      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.0016 0.0027  
Fixed index annuities guaranteed benefits | Maximum | Equity volatility      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.4585 0.4605  
Fixed index annuities guaranteed benefits | Maximum | Base lapse rate      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.6000 0.5000  
Fixed index annuities guaranteed benefits | Maximum | Dynamic lapse multiplier      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 1.8618 1.8618  
Fixed index annuities guaranteed benefits | Maximum | Mortality multiplier      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 1.3080 1.3080  
Fixed index annuities guaranteed benefits | Maximum | Utilization      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.9750 0.9750  
Fixed index annuities guaranteed benefits | Maximum | Option budget      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.0600 0.0600  
Fixed index annuities guaranteed benefits | Maximum | Equity / interest-rate correlation      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.0630 0.0630  
Fixed index annuities guaranteed benefits | Maximum | NPA      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefits, measurement input 0.0213 0.0265  
Fixed index annuities guaranteed benefits | Level 3      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Market risk benefit liabilities, at fair value $ 3,841 $ 2,833  
Index credits on fixed index annuities      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Policyholder contract deposit $ 2,000 $ 1,800  
Index credits on fixed index annuities | Minimum | Equity volatility      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.0585 0.0585  
Index credits on fixed index annuities | Minimum | Base lapse rate      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.0020 0.0020  
Index credits on fixed index annuities | Minimum | Dynamic lapse multiplier      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.2000 0.2000  
Index credits on fixed index annuities | Minimum | Mortality multiplier      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.2413 0.2413  
Index credits on fixed index annuities | Minimum | Utilization      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.6000 0.6000  
Index credits on fixed index annuities | Minimum | Option budget      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.0000 0.0000  
Index credits on fixed index annuities | Minimum | Equity / interest-rate correlation      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.0000 0.0000  
Index credits on fixed index annuities | Minimum | NPA      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.0016 0.0027  
Index credits on fixed index annuities | Maximum | Equity volatility      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.4585 0.4605  
Index credits on fixed index annuities | Maximum | Base lapse rate      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.6000 0.5000  
Index credits on fixed index annuities | Maximum | Dynamic lapse multiplier      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 1.8618 1.8618  
Index credits on fixed index annuities | Maximum | Mortality multiplier      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 1.3080 1.3080  
Index credits on fixed index annuities | Maximum | Utilization      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.9750 0.9750  
Index credits on fixed index annuities | Maximum | Option budget      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.0600 0.0600  
Index credits on fixed index annuities | Maximum | Equity / interest-rate correlation      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.0630 0.0630  
Index credits on fixed index annuities | Maximum | NPA      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.0213 0.0265  
Index credits on fixed index annuities | Level 3      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivatives within policyholder contract deposits $ 9,996 $ 8,390  
Registered index-linked annuities | Minimum | Equity volatility      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.0585 0.0585  
Registered index-linked annuities | Minimum | Base lapse rate      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.0100 0.0100  
Registered index-linked annuities | Minimum | Dynamic lapse multiplier      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.9500 0.9500  
Registered index-linked annuities | Minimum | Mortality multiplier      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.9665 0.9665  
Registered index-linked annuities | Minimum | Utilization      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.0170 0.0170  
Registered index-linked annuities | Minimum | Option budget      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.0000 0.0000  
Registered index-linked annuities | Minimum | Equity / interest-rate correlation      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.0016 0.0027  
Registered index-linked annuities | Maximum | Equity volatility      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.4585 0.4605  
Registered index-linked annuities | Maximum | Base lapse rate      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.5000 0.5000  
Registered index-linked annuities | Maximum | Dynamic lapse multiplier      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 2.2000 2.2000  
Registered index-linked annuities | Maximum | Mortality multiplier      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 1.4729 1.4729  
Registered index-linked annuities | Maximum | Utilization      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.1809 0.1809  
Registered index-linked annuities | Maximum | Option budget      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.0630 0.0630  
Registered index-linked annuities | Maximum | Equity / interest-rate correlation      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.0213 0.0265  
Registered index-linked annuities | Level 3      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivatives within policyholder contract deposits $ 765 $ 17  
Index universal life | Minimum | Equity volatility      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.0588 0.0585  
Index universal life | Minimum | Base lapse rate      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.0000 0.0000  
Index universal life | Minimum | Mortality rates      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.0000 0.0000  
Index universal life | Minimum | NPA      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.0016 0.0027  
Index universal life | Maximum | Equity volatility      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.2017 0.1963  
Index universal life | Maximum | Base lapse rate      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.3797 0.3797  
Index universal life | Maximum | Mortality rates      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 1.0000 1.0000  
Index universal life | Maximum | NPA      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivative liability, measurement input 0.0213 0.0265  
Index universal life | Level 3      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Embedded derivatives within policyholder contract deposits $ 1,261 $ 1,008  
[1] See Note 8 for details of balances associated with variable interest entities