v3.25.2
Contractholder Funds - Guaranteed Minimum Interest Rate (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Dec. 31, 2023
Excess of crediting rates over GMIR      
Total policyholder account value $ 28,044.8 $ 26,760.3  
Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Total policyholder account value 21,539.6 20,191.1  
Workplace savings and retirement solutions | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 12,924.6 12,125.1  
Policyholder account value without GMIR 1,760.4 1,857.7  
Total policyholder account value 14,685.0 13,982.8 $ 12,721.5
Workplace savings and retirement solutions | Up to 1.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 1,523.8 1,486.9  
Workplace savings and retirement solutions | 1.01% - 2.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 4,120.3 4,783.3  
Workplace savings and retirement solutions | 2.01% - 3.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 7,259.6 5,833.4  
Workplace savings and retirement solutions | 3.01% - 4.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 7.7 7.6  
Workplace savings and retirement solutions | 4.01% and above | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 13.2 13.9  
Workplace savings and retirement solutions | At GMIR | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 172.4 3,753.1  
Workplace savings and retirement solutions | At GMIR | 1.01% - 2.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR   3,727.0  
Workplace savings and retirement solutions | At GMIR | 2.01% - 3.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 151.5 4.6  
Workplace savings and retirement solutions | At GMIR | 3.01% - 4.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 7.7 7.6  
Workplace savings and retirement solutions | At GMIR | 4.01% and above | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 13.2 13.9  
Workplace savings and retirement solutions | Up to 0.50% above GMIR | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 3,112.8 186.9  
Workplace savings and retirement solutions | Up to 0.50% above GMIR | 1.01% - 2.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 3,112.6    
Workplace savings and retirement solutions | Up to 0.50% above GMIR | 2.01% - 3.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 0.2 186.9  
Workplace savings and retirement solutions | 0.51% to 1.00% above GMIR | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 52.4 1.8  
Workplace savings and retirement solutions | 0.51% to 1.00% above GMIR | 2.01% - 3.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 52.4 1.8  
Workplace savings and retirement solutions | 1.01% to 2.00% above GMIR | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 5,279.5 4,998.0  
Workplace savings and retirement solutions | 1.01% to 2.00% above GMIR | Up to 1.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 237.4 1,041.7  
Workplace savings and retirement solutions | 1.01% to 2.00% above GMIR | 1.01% - 2.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 1,007.7 1,056.3  
Workplace savings and retirement solutions | 1.01% to 2.00% above GMIR | 2.01% - 3.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 4,034.4 2,900.0  
Workplace savings and retirement solutions | 2.01% or more above GMIR | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 4,307.5 3,185.3  
Workplace savings and retirement solutions | 2.01% or more above GMIR | Up to 1.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 1,286.4 445.2  
Workplace savings and retirement solutions | 2.01% or more above GMIR | 2.01% - 3.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR $ 3,021.1 $ 2,740.1  
Workplace savings and retirement solutions | Minimum | 1.01% - 2.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
GMIR 1.01% 1.01%  
Workplace savings and retirement solutions | Minimum | 2.01% - 3.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
GMIR 2.01% 2.01%  
Workplace savings and retirement solutions | Minimum | 3.01% - 4.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
GMIR 3.01% 3.01%  
Workplace savings and retirement solutions | Minimum | 4.01% and above | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
GMIR 4.01% 4.01%  
Workplace savings and retirement solutions | Maximum | Up to 1.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
GMIR 1.00% 1.00%  
Workplace savings and retirement solutions | Maximum | 1.01% - 2.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
GMIR 2.00% 2.00%  
Workplace savings and retirement solutions | Maximum | 2.01% - 3.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
GMIR 3.00% 3.00%  
Workplace savings and retirement solutions | Maximum | 3.01% - 4.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
GMIR 4.00% 4.00%  
Individual variable annuities | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR $ 237.9 $ 254.5  
Policyholder account value without GMIR 2,523.7 1,491.5  
Total policyholder account value 2,761.6 1,746.0 514.2
Individual variable annuities | Up to 1.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 19.4 19.2  
Individual variable annuities | 1.01% - 2.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 4.4 3.8  
Individual variable annuities | 2.01% - 3.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 214.1 231.5  
Individual variable annuities | At GMIR | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 237.9 254.5  
Individual variable annuities | At GMIR | Up to 1.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 19.4 19.2  
Individual variable annuities | At GMIR | 1.01% - 2.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 4.4 3.8  
Individual variable annuities | At GMIR | 2.01% - 3.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR $ 214.1 $ 231.5  
Individual variable annuities | Minimum | 1.01% - 2.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
GMIR 1.01% 1.01%  
Individual variable annuities | Minimum | 2.01% - 3.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
GMIR 2.01% 2.01%  
Individual variable annuities | Minimum | 3.01% - 4.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
GMIR 3.01% 3.01%  
Individual variable annuities | Minimum | 4.01% and above | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
GMIR 4.01% 4.01%  
Individual variable annuities | Maximum | Up to 1.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
GMIR 1.00% 1.00%  
Individual variable annuities | Maximum | 1.01% - 2.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
GMIR 2.00% 2.00%  
Individual variable annuities | Maximum | 2.01% - 3.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
GMIR 3.00% 3.00%  
Individual variable annuities | Maximum | 3.01% - 4.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
GMIR 4.00% 4.00%  
Individual fixed deferred annuities | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR $ 3,931.0 $ 4,284.6  
Policyholder account value without GMIR 162.0 177.7  
Total policyholder account value 4,093.0 4,462.3 5,538.3
Individual fixed deferred annuities | Up to 1.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 1,431.8 1,586.7  
Individual fixed deferred annuities | 1.01% - 2.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 119.9 139.5  
Individual fixed deferred annuities | 2.01% - 3.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 2,243.9 2,416.4  
Individual fixed deferred annuities | 3.01% - 4.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 135.4 142.0  
Individual fixed deferred annuities | At GMIR | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 2,637.0 2,850.3  
Individual fixed deferred annuities | At GMIR | Up to 1.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 185.8 213.1  
Individual fixed deferred annuities | At GMIR | 1.01% - 2.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 71.9 78.8  
Individual fixed deferred annuities | At GMIR | 2.01% - 3.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 2,243.9 2,416.4  
Individual fixed deferred annuities | At GMIR | 3.01% - 4.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 135.4 142.0  
Individual fixed deferred annuities | Up to 0.50% above GMIR | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 18.4 27.8  
Individual fixed deferred annuities | Up to 0.50% above GMIR | Up to 1.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 18.2 27.5  
Individual fixed deferred annuities | Up to 0.50% above GMIR | 1.01% - 2.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 0.2 0.3  
Individual fixed deferred annuities | 0.51% to 1.00% above GMIR | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 40.2 60.8  
Individual fixed deferred annuities | 0.51% to 1.00% above GMIR | Up to 1.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 36.9 56.0  
Individual fixed deferred annuities | 0.51% to 1.00% above GMIR | 1.01% - 2.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 3.3 4.8  
Individual fixed deferred annuities | 1.01% to 2.00% above GMIR | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 142.4 245.1  
Individual fixed deferred annuities | 1.01% to 2.00% above GMIR | Up to 1.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 105.9 196.9  
Individual fixed deferred annuities | 1.01% to 2.00% above GMIR | 1.01% - 2.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 36.5 48.2  
Individual fixed deferred annuities | 2.01% or more above GMIR | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 1,093.0 1,100.6  
Individual fixed deferred annuities | 2.01% or more above GMIR | Up to 1.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 1,085.0 1,093.2  
Individual fixed deferred annuities | 2.01% or more above GMIR | 1.01% - 2.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR $ 8.0 $ 7.4  
Individual fixed deferred annuities | Minimum | 1.01% - 2.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
GMIR 1.01% 1.01%  
Individual fixed deferred annuities | Minimum | 2.01% - 3.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
GMIR 2.01% 2.01%  
Individual fixed deferred annuities | Minimum | 3.01% - 4.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
GMIR 3.01% 3.01%  
Individual fixed deferred annuities | Minimum | 4.01% and above | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
GMIR 4.01% 4.01%  
Individual fixed deferred annuities | Maximum | Up to 1.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
GMIR 1.00% 1.00%  
Individual fixed deferred annuities | Maximum | 1.01% - 2.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
GMIR 2.00% 2.00%  
Individual fixed deferred annuities | Maximum | 2.01% - 3.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
GMIR 3.00% 3.00%  
Individual fixed deferred annuities | Maximum | 3.01% - 4.00% | Retirement and Income Solutions      
Excess of crediting rates over GMIR      
GMIR 4.00% 4.00%  
Universal life | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR $ 5,844.8 $ 5,925.1  
Policyholder account value without GMIR 1,013.6 1,005.3  
Total policyholder account value 6,858.4 6,930.4 $ 6,910.4
Universal life | Up to 1.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 23.1 21.3  
Universal life | 1.01% - 2.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 1,669.4 1,663.5  
Universal life | 2.01% - 3.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 2,340.8 2,425.1  
Universal life | 3.01% - 4.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 1,760.4 1,763.3  
Universal life | 4.01% and above | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 51.1 51.9  
Universal life | At GMIR | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 2,463.0 2,497.8  
Universal life | At GMIR | 1.01% - 2.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 255.1 268.6  
Universal life | At GMIR | 2.01% - 3.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 608.3 646.0  
Universal life | At GMIR | 3.01% - 4.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 1,577.4 1,559.7  
Universal life | At GMIR | 4.01% and above | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 22.2 23.5  
Universal life | Up to 0.50% above GMIR | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 653.2 691.4  
Universal life | Up to 0.50% above GMIR | 2.01% - 3.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 611.9 632.2  
Universal life | Up to 0.50% above GMIR | 3.01% - 4.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 38.9 56.7  
Universal life | Up to 0.50% above GMIR | 4.01% and above | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 2.4 2.5  
Universal life | 0.51% to 1.00% above GMIR | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 1,127.3 1,238.9  
Universal life | 0.51% to 1.00% above GMIR | Up to 1.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 1.4 1.5  
Universal life | 0.51% to 1.00% above GMIR | 1.01% - 2.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 349.9 424.0  
Universal life | 0.51% to 1.00% above GMIR | 2.01% - 3.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 734.0 771.9  
Universal life | 0.51% to 1.00% above GMIR | 3.01% - 4.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 32.9 34.5  
Universal life | 0.51% to 1.00% above GMIR | 4.01% and above | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 9.1 7.0  
Universal life | 1.01% to 2.00% above GMIR | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 1,118.8 1,026.5  
Universal life | 1.01% to 2.00% above GMIR | Up to 1.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 14.4 14.9  
Universal life | 1.01% to 2.00% above GMIR | 1.01% - 2.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 601.6 518.6  
Universal life | 1.01% to 2.00% above GMIR | 2.01% - 3.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 380.9 368.7  
Universal life | 1.01% to 2.00% above GMIR | 3.01% - 4.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 104.5 105.4  
Universal life | 1.01% to 2.00% above GMIR | 4.01% and above | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 17.4 18.9  
Universal life | 2.01% or more above GMIR | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 482.5 470.5  
Universal life | 2.01% or more above GMIR | Up to 1.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 7.3 4.9  
Universal life | 2.01% or more above GMIR | 1.01% - 2.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 462.8 452.3  
Universal life | 2.01% or more above GMIR | 2.01% - 3.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR 5.7 6.3  
Universal life | 2.01% or more above GMIR | 3.01% - 4.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
Policyholder account value with GMIR $ 6.7 $ 7.0  
Universal life | Minimum | 1.01% - 2.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
GMIR 1.01% 1.01%  
Universal life | Minimum | 2.01% - 3.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
GMIR 2.01% 2.01%  
Universal life | Minimum | 3.01% - 4.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
GMIR 3.01% 3.01%  
Universal life | Minimum | 4.01% and above | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
GMIR 4.01% 4.01%  
Universal life | Maximum | Up to 1.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
GMIR 1.00% 1.00%  
Universal life | Maximum | 1.01% - 2.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
GMIR 2.00% 2.00%  
Universal life | Maximum | 2.01% - 3.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
GMIR 3.00% 3.00%  
Universal life | Maximum | 3.01% - 4.00% | Benefits and Protection | Life Insurance      
Excess of crediting rates over GMIR      
GMIR 4.00% 4.00%