v3.26.1
LIABILITIES FOR INSURANCE PRODUCTS - GUARANTEED MINIMUM CREDITING RATES (Details)
$ in Millions
Jun. 30, 2026
USD ($)
Dec. 31, 2025
USD ($)
Jun. 30, 2025
USD ($)
Policyholder Account Balance [Line Items]      
Total policyholder account values $ 19,953.5   $ 18,054.9
Amount of reserves above (below) policyholder account values (312.6)   (445.9)
Policyholder account balances 19,640.9 $ 18,912.6 17,609.0
0.00%-2.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values $ 1,926.8   $ 1,796.3
0.00%-2.99% | Minimum      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rates 0.00%   0.00%
0.00%-2.99% | Maximum      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rates 2.99%   2.99%
3.00%-4.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values $ 2,024.3   $ 2,169.4
3.00%-4.99% | Minimum      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rates 3.00%   3.00%
3.00%-4.99% | Maximum      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rates 4.99%   4.99%
5.00% and greater      
Policyholder Account Balance [Line Items]      
Total policyholder account values $ 129.6   $ 132.7
5.00% and greater | Minimum      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rates 5.00%   5.00%
At guaranteed minimum | 0.00%-2.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values $ 194.5   $ 140.3
At guaranteed minimum | 3.00%-4.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 1,656.9   1,633.3
At guaranteed minimum | 5.00% and greater      
Policyholder Account Balance [Line Items]      
Total policyholder account values $ 129.4   $ 132.5
1-50 basis points above | Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balance, above guaranteed minimum crediting rate 0.0001   0.0001
1-50 basis points above | Maximum      
Policyholder Account Balance [Line Items]      
Policyholder account balance, above guaranteed minimum crediting rate 0.0050   0.0050
1-50 basis points above | 0.00%-2.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values $ 539.0   $ 537.2
1-50 basis points above | 3.00%-4.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 152.4   186.7
1-50 basis points above | 5.00% and greater      
Policyholder Account Balance [Line Items]      
Total policyholder account values $ 0.2   $ 0.2
51-150 basis points above | Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balance, above guaranteed minimum crediting rate 0.0051   0.0051
51-150 basis points above | Maximum      
Policyholder Account Balance [Line Items]      
Policyholder account balance, above guaranteed minimum crediting rate 0.0150   0.0150
51-150 basis points above | 0.00%-2.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values $ 316.2   $ 307.0
51-150 basis points above | 3.00%-4.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 211.7   327.7
51-150 basis points above | 5.00% and greater      
Policyholder Account Balance [Line Items]      
Total policyholder account values $ 0.0   $ 0.0
Greater than 150 basis points above | Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balance, above guaranteed minimum crediting rate 0.0150   0.0150
Greater than 150 basis points above | 0.00%-2.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values $ 877.1   $ 811.8
Greater than 150 basis points above | 3.00%-4.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 3.3   21.7
Greater than 150 basis points above | 5.00% and greater      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.0
Contracts Excluding Fixed Indexed Annuities      
Policyholder Account Balance [Line Items]      
Total policyholder account values 4,080.7   4,098.4
Contracts Excluding Fixed Indexed Annuities | At guaranteed minimum      
Policyholder Account Balance [Line Items]      
Total policyholder account values 1,980.8   1,906.1
Contracts Excluding Fixed Indexed Annuities | 1-50 basis points above      
Policyholder Account Balance [Line Items]      
Total policyholder account values 691.6   724.1
Contracts Excluding Fixed Indexed Annuities | 51-150 basis points above      
Policyholder Account Balance [Line Items]      
Total policyholder account values 527.9   634.7
Contracts Excluding Fixed Indexed Annuities | Greater than 150 basis points above      
Policyholder Account Balance [Line Items]      
Total policyholder account values 880.4   833.5
Fixed interest annuities      
Policyholder Account Balance [Line Items]      
Total policyholder account values 2,083.9   2,148.4
Amount of reserves above (below) policyholder account values 0.0   0.0
Policyholder account balances 2,083.9   2,148.4
Fixed interest annuities | 0.00%-2.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values $ 737.1   $ 644.0
Fixed interest annuities | 0.00%-2.99% | Minimum      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rates 0.00%   0.00%
Fixed interest annuities | 0.00%-2.99% | Maximum      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rates 2.99%   2.99%
Fixed interest annuities | 3.00%-4.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values $ 1,272.2   $ 1,424.8
Fixed interest annuities | 3.00%-4.99% | Minimum      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rates 3.00%   3.00%
Fixed interest annuities | 3.00%-4.99% | Maximum      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rates 4.99%   4.99%
Fixed interest annuities | 5.00% and greater      
Policyholder Account Balance [Line Items]      
Total policyholder account values $ 74.6   $ 79.6
Fixed interest annuities | 5.00% and greater | Minimum      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rates 5.00%   5.00%
Fixed interest annuities | At guaranteed minimum      
Policyholder Account Balance [Line Items]      
Total policyholder account values $ 1,425.8   $ 1,354.7
Fixed interest annuities | At guaranteed minimum | 0.00%-2.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 139.2   83.4
Fixed interest annuities | At guaranteed minimum | 3.00%-4.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 1,212.0   1,191.7
Fixed interest annuities | At guaranteed minimum | 5.00% and greater      
Policyholder Account Balance [Line Items]      
Total policyholder account values 74.6   79.6
Fixed interest annuities | 1-50 basis points above      
Policyholder Account Balance [Line Items]      
Total policyholder account values 261.6   261.7
Fixed interest annuities | 1-50 basis points above | 0.00%-2.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 201.4   186.4
Fixed interest annuities | 1-50 basis points above | 3.00%-4.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 60.2   75.3
Fixed interest annuities | 1-50 basis points above | 5.00% and greater      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.0
Fixed interest annuities | 51-150 basis points above      
Policyholder Account Balance [Line Items]      
Total policyholder account values 316.2   444.5
Fixed interest annuities | 51-150 basis points above | 0.00%-2.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 316.2   306.6
Fixed interest annuities | 51-150 basis points above | 3.00%-4.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   137.9
Fixed interest annuities | 51-150 basis points above | 5.00% and greater      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.0
Fixed interest annuities | Greater than 150 basis points above      
Policyholder Account Balance [Line Items]      
Total policyholder account values 80.3   87.5
Fixed interest annuities | Greater than 150 basis points above | 0.00%-2.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 80.3   67.6
Fixed interest annuities | Greater than 150 basis points above | 3.00%-4.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   19.9
Fixed interest annuities | Greater than 150 basis points above | 5.00% and greater      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.0
Other annuities      
Policyholder Account Balance [Line Items]      
Total policyholder account values 129.4   134.6
Other annuities | 0.00%-2.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values $ 38.6   $ 45.6
Other annuities | 0.00%-2.99% | Minimum      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rates 0.00%   0.00%
Other annuities | 0.00%-2.99% | Maximum      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rates 2.99%   2.99%
Other annuities | 3.00%-4.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values $ 56.0   $ 56.6
Other annuities | 3.00%-4.99% | Minimum      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rates 3.00%   3.00%
Other annuities | 3.00%-4.99% | Maximum      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rates 4.99%   4.99%
Other annuities | 5.00% and greater      
Policyholder Account Balance [Line Items]      
Total policyholder account values $ 34.8   $ 32.4
Other annuities | 5.00% and greater | Minimum      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rates 5.00%   5.00%
Other annuities | At guaranteed minimum      
Policyholder Account Balance [Line Items]      
Total policyholder account values $ 110.6   $ 113.3
Other annuities | At guaranteed minimum | 0.00%-2.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 19.8   24.3
Other annuities | At guaranteed minimum | 3.00%-4.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 56.0   56.6
Other annuities | At guaranteed minimum | 5.00% and greater      
Policyholder Account Balance [Line Items]      
Total policyholder account values 34.8   32.4
Other annuities | 1-50 basis points above      
Policyholder Account Balance [Line Items]      
Total policyholder account values 18.8   21.3
Other annuities | 1-50 basis points above | 0.00%-2.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 18.8   21.3
Other annuities | 1-50 basis points above | 3.00%-4.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.0
Other annuities | 1-50 basis points above | 5.00% and greater      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.0
Other annuities | 51-150 basis points above      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.0
Other annuities | 51-150 basis points above | 0.00%-2.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.0
Other annuities | 51-150 basis points above | 3.00%-4.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.0
Other annuities | 51-150 basis points above | 5.00% and greater      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.0
Other annuities | Greater than 150 basis points above      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.0
Other annuities | Greater than 150 basis points above | 0.00%-2.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.0
Other annuities | Greater than 150 basis points above | 3.00%-4.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.0
Other annuities | Greater than 150 basis points above | 5.00% and greater      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.0
Interest-sensitive life      
Policyholder Account Balance [Line Items]      
Total policyholder account values 1,513.2   1,448.4
Amount of reserves above (below) policyholder account values 18.5   11.9
Policyholder account balances 1,531.7   1,460.3
Interest-sensitive life | 0.00%-2.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values $ 816.8   $ 760.9
Interest-sensitive life | 0.00%-2.99% | Minimum      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rates 0.00%   0.00%
Interest-sensitive life | 0.00%-2.99% | Maximum      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rates 2.99%   2.99%
Interest-sensitive life | 3.00%-4.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values $ 676.5   $ 667.1
Interest-sensitive life | 3.00%-4.99% | Minimum      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rates 3.00%   3.00%
Interest-sensitive life | 3.00%-4.99% | Maximum      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rates 4.99%   4.99%
Interest-sensitive life | 5.00% and greater      
Policyholder Account Balance [Line Items]      
Total policyholder account values $ 19.9   $ 20.4
Interest-sensitive life | 5.00% and greater | Minimum      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rates 5.00%   5.00%
Interest-sensitive life | At guaranteed minimum      
Policyholder Account Balance [Line Items]      
Total policyholder account values $ 409.0   $ 400.6
Interest-sensitive life | At guaranteed minimum | 0.00%-2.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 20.0   16.3
Interest-sensitive life | At guaranteed minimum | 3.00%-4.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 369.3   364.1
Interest-sensitive life | At guaranteed minimum | 5.00% and greater      
Policyholder Account Balance [Line Items]      
Total policyholder account values 19.7   20.2
Interest-sensitive life | 1-50 basis points above      
Policyholder Account Balance [Line Items]      
Total policyholder account values 92.4   111.6
Interest-sensitive life | 1-50 basis points above | 0.00%-2.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.0
Interest-sensitive life | 1-50 basis points above | 3.00%-4.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 92.2   111.4
Interest-sensitive life | 1-50 basis points above | 5.00% and greater      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.2   0.2
Interest-sensitive life | 51-150 basis points above      
Policyholder Account Balance [Line Items]      
Total policyholder account values 211.7   190.2
Interest-sensitive life | 51-150 basis points above | 0.00%-2.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.4
Interest-sensitive life | 51-150 basis points above | 3.00%-4.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 211.7   189.8
Interest-sensitive life | 51-150 basis points above | 5.00% and greater      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.0
Interest-sensitive life | Greater than 150 basis points above      
Policyholder Account Balance [Line Items]      
Total policyholder account values 800.1   746.0
Interest-sensitive life | Greater than 150 basis points above | 0.00%-2.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 796.8   744.2
Interest-sensitive life | Greater than 150 basis points above | 3.00%-4.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 3.3   1.8
Interest-sensitive life | Greater than 150 basis points above | 5.00% and greater      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.0
Other      
Policyholder Account Balance [Line Items]      
Total policyholder account values 354.2   367.0
Amount of reserves above (below) policyholder account values 0.0   0.0
Policyholder account balances 354.2   367.0
Other | 0.00%-2.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values $ 334.3   $ 345.8
Other | 0.00%-2.99% | Minimum      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rates 0.00%   0.00%
Other | 0.00%-2.99% | Maximum      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rates 2.99%   2.99%
Other | 3.00%-4.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values $ 19.6   $ 20.9
Other | 3.00%-4.99% | Minimum      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rates 3.00%   3.00%
Other | 3.00%-4.99% | Maximum      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rates 4.99%   4.99%
Other | 5.00% and greater      
Policyholder Account Balance [Line Items]      
Total policyholder account values $ 0.3   $ 0.3
Other | 5.00% and greater | Minimum      
Policyholder Account Balance [Line Items]      
Range of guaranteed minimum crediting rates 5.00%   5.00%
Other | At guaranteed minimum      
Policyholder Account Balance [Line Items]      
Total policyholder account values $ 35.4   $ 37.5
Other | At guaranteed minimum | 0.00%-2.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 15.5   16.3
Other | At guaranteed minimum | 3.00%-4.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 19.6   20.9
Other | At guaranteed minimum | 5.00% and greater      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.3   0.3
Other | 1-50 basis points above      
Policyholder Account Balance [Line Items]      
Total policyholder account values 318.8   329.5
Other | 1-50 basis points above | 0.00%-2.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 318.8   329.5
Other | 1-50 basis points above | 3.00%-4.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.0
Other | 1-50 basis points above | 5.00% and greater      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.0
Other | 51-150 basis points above      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.0
Other | 51-150 basis points above | 0.00%-2.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.0
Other | 51-150 basis points above | 3.00%-4.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.0
Other | 51-150 basis points above | 5.00% and greater      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.0
Other | Greater than 150 basis points above      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.0
Other | Greater than 150 basis points above | 0.00%-2.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.0
Other | Greater than 150 basis points above | 3.00%-4.99%      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.0
Other | Greater than 150 basis points above | 5.00% and greater      
Policyholder Account Balance [Line Items]      
Total policyholder account values 0.0   0.0
Fixed indexed annuities      
Policyholder Account Balance [Line Items]      
Total policyholder account values 12,198.4   11,338.3
Amount of reserves above (below) policyholder account values (331.1)   (457.8)
Policyholder account balances 11,867.3   10,880.5
Funding Agreement Backed Notes      
Policyholder Account Balance [Line Items]      
Total policyholder account values 3,674.4   2,618.2
Amount of reserves above (below) policyholder account values 0.0   0.0
Policyholder account balances $ 3,674.4   $ 2,618.2