v3.25.4
Policyholder Account Balances - Summary of Policyholder Account Balances by Ranges (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 135,904 $ 125,818  
Up to 1.00%      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rate 1.00% 1.00%  
4.01% and above      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rate 4.01% 4.01%  
Minimum | 1.01% - 2.00%      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rate 1.01% 1.01%  
Minimum | 2.01% - 3.00%      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rate 2.01% 2.01%  
Minimum | 3.01% - 4.00%      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rate 3.01% 3.01%  
Maximum | 1.01% - 2.00%      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rate 2.00% 2.00%  
Maximum | 2.01% - 3.00%      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rate 3.00% 3.00%  
Maximum | 3.01% - 4.00%      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rate 4.00% 4.00%  
Variable Annuities      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 40,060 $ 35,267 $ 29,141
Variable Annuities | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 1,589 1,753  
Variable Annuities | 1-50 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Variable Annuities | 51-100 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Variable Annuities | 101-150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Variable Annuities | Greater Than 150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 4 7  
Variable Annuities | Up to 1.00%      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Variable Annuities | Up to 1.00% | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Variable Annuities | Up to 1.00% | 1-50 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Variable Annuities | Up to 1.00% | 51-100 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Variable Annuities | Up to 1.00% | 101-150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Variable Annuities | Up to 1.00% | Greater Than 150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Variable Annuities | 1.01% - 2.00%      
Policyholder Account Balance [Line Items]      
Policyholder account balances 9 10  
Variable Annuities | 1.01% - 2.00% | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 5 3  
Variable Annuities | 1.01% - 2.00% | 1-50 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Variable Annuities | 1.01% - 2.00% | 51-100 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Variable Annuities | 1.01% - 2.00% | 101-150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Variable Annuities | 1.01% - 2.00% | Greater Than 150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 4 7  
Variable Annuities | 2.01% - 3.00%      
Policyholder Account Balance [Line Items]      
Policyholder account balances 464 511  
Variable Annuities | 2.01% - 3.00% | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 464 511  
Variable Annuities | 2.01% - 3.00% | 1-50 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Variable Annuities | 2.01% - 3.00% | 51-100 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Variable Annuities | 2.01% - 3.00% | 101-150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Variable Annuities | 2.01% - 3.00% | Greater Than 150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Variable Annuities | 3.01% - 4.00%      
Policyholder Account Balance [Line Items]      
Policyholder account balances 1,115 1,231  
Variable Annuities | 3.01% - 4.00% | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 1,115 1,231  
Variable Annuities | 3.01% - 4.00% | 1-50 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Variable Annuities | 3.01% - 4.00% | 51-100 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Variable Annuities | 3.01% - 4.00% | 101-150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Variable Annuities | 3.01% - 4.00% | Greater Than 150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 0  
Variable Annuities | 4.01% and above      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rate 4.01%    
Policyholder account balances $ 5 8  
Variable Annuities | 4.01% and above | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 5 8  
Variable Annuities | 4.01% and above | 1-50 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Variable Annuities | 4.01% and above | 51-100 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Variable Annuities | 4.01% and above | 101-150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Variable Annuities | 4.01% and above | Greater Than 150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Variable Annuities | Other      
Policyholder Account Balance [Line Items]      
Policyholder account balances 38,467 33,507  
Variable Annuities | Other | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Variable Annuities | Other | 1-50 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Variable Annuities | Other | 51-100 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Variable Annuities | Other | 101-150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Variable Annuities | Other | Greater Than 150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Fixed Annuities      
Policyholder Account Balance [Line Items]      
Policyholder account balances 28,710 25,941 25,330
Fixed Annuities | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 2,562 3,791  
Fixed Annuities | 1-50 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 1,082 1,002  
Fixed Annuities | 51-100 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 514 691  
Fixed Annuities | 101-150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 205 475  
Fixed Annuities | Greater Than 150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 10,492 $ 7,084  
Fixed Annuities | Up to 1.00%      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rate 1.00% 1.00%  
Policyholder account balances $ 3,629 $ 4,213  
Fixed Annuities | Up to 1.00% | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 123 298  
Fixed Annuities | Up to 1.00% | 1-50 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 768 801  
Fixed Annuities | Up to 1.00% | 51-100 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 393 540  
Fixed Annuities | Up to 1.00% | 101-150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 133 255  
Fixed Annuities | Up to 1.00% | Greater Than 150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 2,212 2,319  
Fixed Annuities | 1.01% - 2.00%      
Policyholder Account Balance [Line Items]      
Policyholder account balances 8,809 5,505  
Fixed Annuities | 1.01% - 2.00% | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 188 235  
Fixed Annuities | 1.01% - 2.00% | 1-50 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 210 174  
Fixed Annuities | 1.01% - 2.00% | 51-100 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 120 150  
Fixed Annuities | 1.01% - 2.00% | 101-150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 70 218  
Fixed Annuities | 1.01% - 2.00% | Greater Than 150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 8,221 4,728  
Fixed Annuities | 2.01% - 3.00%      
Policyholder Account Balance [Line Items]      
Policyholder account balances 1,448 1,637  
Fixed Annuities | 2.01% - 3.00% | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 1,282 1,570  
Fixed Annuities | 2.01% - 3.00% | 1-50 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 104 27  
Fixed Annuities | 2.01% - 3.00% | 51-100 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 1 1  
Fixed Annuities | 2.01% - 3.00% | 101-150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 2 2  
Fixed Annuities | 2.01% - 3.00% | Greater Than 150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 59 37  
Fixed Annuities | 3.01% - 4.00%      
Policyholder Account Balance [Line Items]      
Policyholder account balances 812 1,518  
Fixed Annuities | 3.01% - 4.00% | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 812 1,518  
Fixed Annuities | 3.01% - 4.00% | 1-50 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Fixed Annuities | 3.01% - 4.00% | 51-100 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Fixed Annuities | 3.01% - 4.00% | 101-150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Fixed Annuities | 3.01% - 4.00% | Greater Than 150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0  
Fixed Annuities | 4.01% and above      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rate 4.01% 4.01%  
Policyholder account balances $ 157 $ 170  
Fixed Annuities | 4.01% and above | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 157 170  
Fixed Annuities | 4.01% and above | 1-50 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Fixed Annuities | 4.01% and above | 51-100 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Fixed Annuities | 4.01% and above | 101-150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Fixed Annuities | 4.01% and above | Greater Than 150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Fixed Annuities | Other      
Policyholder Account Balance [Line Items]      
Policyholder account balances 13,855 12,898  
Fixed Annuities | Other | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Fixed Annuities | Other | 1-50 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Fixed Annuities | Other | 51-100 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Fixed Annuities | Other | 101-150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Fixed Annuities | Other | Greater Than 150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0  
Fixed Annuities | Minimum | 1.01% - 2.00%      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rate 1.01% 1.01%  
Fixed Annuities | Minimum | 2.01% - 3.00%      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rate 2.01% 2.01%  
Fixed Annuities | Minimum | 3.01% - 4.00%      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rate 3.01% 3.01%  
Fixed Annuities | Maximum | 1.01% - 2.00%      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rate 2.00% 2.00%  
Fixed Annuities | Maximum | 2.01% - 3.00%      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rate 3.00% 3.00%  
Fixed Annuities | Maximum | 3.01% - 4.00%      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rate 4.00% 4.00%  
UL and Other      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 35,663 $ 36,242 36,784
UL and Other | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 24,475 25,696  
UL and Other | 1-50 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 10 10  
UL and Other | 51-100 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 418 378  
UL and Other | 101-150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 36 122  
UL and Other | Greater Than 150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 3,464 $ 3,460  
UL and Other | Up to 1.00%      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rate 1.00% 1.00%  
Policyholder account balances $ 1,284 $ 1,098  
UL and Other | Up to 1.00% | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 256 264  
UL and Other | Up to 1.00% | 1-50 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
UL and Other | Up to 1.00% | 51-100 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 239 226  
UL and Other | Up to 1.00% | 101-150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 36 122  
UL and Other | Up to 1.00% | Greater Than 150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 753 486  
UL and Other | 1.01% - 2.00%      
Policyholder Account Balance [Line Items]      
Policyholder account balances 3,240 3,517  
UL and Other | 1.01% - 2.00% | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 529 543  
UL and Other | 1.01% - 2.00% | 1-50 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
UL and Other | 1.01% - 2.00% | 51-100 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
UL and Other | 1.01% - 2.00% | 101-150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
UL and Other | 1.01% - 2.00% | Greater Than 150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 2,711 2,974  
UL and Other | 2.01% - 3.00%      
Policyholder Account Balance [Line Items]      
Policyholder account balances 6,497 6,761  
UL and Other | 2.01% - 3.00% | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 6,309 6,600  
UL and Other | 2.01% - 3.00% | 1-50 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 10 10  
UL and Other | 2.01% - 3.00% | 51-100 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 178 151  
UL and Other | 2.01% - 3.00% | 101-150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
UL and Other | 2.01% - 3.00% | Greater Than 150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
UL and Other | 3.01% - 4.00%      
Policyholder Account Balance [Line Items]      
Policyholder account balances 13,919 14,726  
UL and Other | 3.01% - 4.00% | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 13,918 14,725  
UL and Other | 3.01% - 4.00% | 1-50 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
UL and Other | 3.01% - 4.00% | 51-100 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 1 1  
UL and Other | 3.01% - 4.00% | 101-150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
UL and Other | 3.01% - 4.00% | Greater Than 150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0  
UL and Other | 4.01% and above      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rate 4.01% 4.01%  
Policyholder account balances $ 3,463 $ 3,564  
UL and Other | 4.01% and above | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 3,463 3,564  
UL and Other | 4.01% and above | 1-50 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
UL and Other | 4.01% and above | 51-100 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
UL and Other | 4.01% and above | 101-150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
UL and Other | 4.01% and above | Greater Than 150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
UL and Other | Other      
Policyholder Account Balance [Line Items]      
Policyholder account balances 7,260 6,576  
UL and Other | Other | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
UL and Other | Other | 1-50 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
UL and Other | Other | 51-100 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
UL and Other | Other | 101-150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
UL and Other | Other | Greater Than 150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0  
UL and Other | Minimum | 1.01% - 2.00%      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rate 1.01% 1.01%  
UL and Other | Minimum | 2.01% - 3.00%      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rate 2.01% 2.01%  
UL and Other | Minimum | 3.01% - 4.00%      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rate 3.01% 3.01%  
UL and Other | Maximum | 1.01% - 2.00%      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rate 2.00% 2.00%  
UL and Other | Maximum | 2.01% - 3.00%      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rate 3.00% 3.00%  
UL and Other | Maximum | 3.01% - 4.00%      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rate 4.00% 4.00%  
Retirement Plan Services      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 23,843 $ 23,619 $ 23,784
Retirement Plan Services | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 8,132 9,030  
Retirement Plan Services | 1-50 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 1,380 1,445  
Retirement Plan Services | 51-100 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 2,922 2,718  
Retirement Plan Services | 101-150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 3,929 4,287  
Retirement Plan Services | Greater Than 150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 7,480 6,139  
Retirement Plan Services | Up to 1.00%      
Policyholder Account Balance [Line Items]      
Policyholder account balances 12,139 10,447  
Retirement Plan Services | Up to 1.00% | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 622 524  
Retirement Plan Services | Up to 1.00% | 1-50 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 441 305  
Retirement Plan Services | Up to 1.00% | 51-100 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 708 735  
Retirement Plan Services | Up to 1.00% | 101-150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 3,449 3,332  
Retirement Plan Services | Up to 1.00% | Greater Than 150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 6,919 5,551  
Retirement Plan Services | 1.01% - 2.00%      
Policyholder Account Balance [Line Items]      
Policyholder account balances 4,034 4,891  
Retirement Plan Services | 1.01% - 2.00% | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 481 470  
Retirement Plan Services | 1.01% - 2.00% | 1-50 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 814 1,001  
Retirement Plan Services | 1.01% - 2.00% | 51-100 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 1,711 1,890  
Retirement Plan Services | 1.01% - 2.00% | 101-150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 467 942  
Retirement Plan Services | 1.01% - 2.00% | Greater Than 150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 561 588  
Retirement Plan Services | 2.01% - 3.00%      
Policyholder Account Balance [Line Items]      
Policyholder account balances 2,220 2,309  
Retirement Plan Services | 2.01% - 3.00% | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 1,694 2,195  
Retirement Plan Services | 2.01% - 3.00% | 1-50 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 27 28  
Retirement Plan Services | 2.01% - 3.00% | 51-100 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 496 85  
Retirement Plan Services | 2.01% - 3.00% | 101-150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 3 1  
Retirement Plan Services | 2.01% - 3.00% | Greater Than 150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Retirement Plan Services | 3.01% - 4.00%      
Policyholder Account Balance [Line Items]      
Policyholder account balances 3,940 4,403  
Retirement Plan Services | 3.01% - 4.00% | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 3,825 4,272  
Retirement Plan Services | 3.01% - 4.00% | 1-50 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 98 111  
Retirement Plan Services | 3.01% - 4.00% | 51-100 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 7 8  
Retirement Plan Services | 3.01% - 4.00% | 101-150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 10 12  
Retirement Plan Services | 3.01% - 4.00% | Greater Than 150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Retirement Plan Services | 4.01% and above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 1,510 1,569  
Retirement Plan Services | 4.01% and above | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 1,510 1,569  
Retirement Plan Services | 4.01% and above | 1-50 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Retirement Plan Services | 4.01% and above | 51-100 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Retirement Plan Services | 4.01% and above | 101-150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Retirement Plan Services | 4.01% and above | Greater Than 150 Basis Points Above      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0