LIABILITIES FOR INSURANCE PRODUCTS - GUARANTEED MINIMUM CREDITING RATES (Details) $ in Millions | Sep. 30, 2024 USD ($) | Dec. 31, 2023 USD ($) | Sep. 30, 2023 USD ($) |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | $ 17,240.5 | $ 15,667.8 | $ 15,481.8 |
0.00%-2.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | $ 1,739 | | $ 1,735.4 |
0.00%-2.99% | Minimum | | | |
Policyholder Account Balance [Line Items] | | | |
Range of guaranteed minimum crediting rates | 0% | | 0% |
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] | | | |
Policyholder account balances | $ 2,196.7 | | $ 2,232.2 |
3.00%-4.99% | Minimum | | | |
Policyholder Account Balance [Line Items] | | | |
Range of guaranteed minimum crediting rates | 3% | | 3% |
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] | | | |
Policyholder account balances | $ 136.3 | | $ 145.4 |
5.00% and greater | Minimum | | | |
Policyholder Account Balance [Line Items] | | | |
Range of guaranteed minimum crediting rates | 5% | | 5% |
At guaranteed minimum | 0.00%-2.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | $ 161 | | $ 198.2 |
At guaranteed minimum | 3.00%-4.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 1,793 | | 1,996.6 |
At guaranteed minimum | 5.00% and greater | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | $ 135.8 | | $ 144.9 |
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] | | | |
Policyholder account balances | $ 561.9 | | $ 671.1 |
1-50 basis points above | 3.00%-4.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 98.4 | | 77.6 |
1-50 basis points above | 5.00% and greater | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | $ 0.5 | | $ 0.5 |
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] | | | |
Policyholder account balances | $ 233.3 | | $ 481.9 |
51-150 basis points above | 3.00%-4.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 283.4 | | 157.5 |
51-150 basis points above | 5.00% and greater | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | $ 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] | | | |
Policyholder account balances | $ 782.8 | | $ 384.2 |
Greater than 150 basis points above | 3.00%-4.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 21.9 | | 0.5 |
Greater than 150 basis points above | 5.00% and greater | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0 | | 0 |
Contracts Excluding Fixed Indexed Annuities | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 4,072 | | 4,113 |
Contracts Excluding Fixed Indexed Annuities | At guaranteed minimum | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 2,089.8 | | 2,339.7 |
Contracts Excluding Fixed Indexed Annuities | 1-50 basis points above | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 660.8 | | 749.2 |
Contracts Excluding Fixed Indexed Annuities | 51-150 basis points above | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 516.7 | | 639.4 |
Contracts Excluding Fixed Indexed Annuities | Greater than 150 basis points above | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 804.7 | | 384.7 |
Fixed interest annuities | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 2,160.4 | | 2,234.7 |
Fixed interest annuities | 0.00%-2.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | $ 613.3 | | $ 642.2 |
Fixed interest annuities | 0.00%-2.99% | Minimum | | | |
Policyholder Account Balance [Line Items] | | | |
Range of guaranteed minimum crediting rates | 0% | | 0% |
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] | | | |
Policyholder account balances | $ 1,465.6 | | $ 1,502.9 |
Fixed interest annuities | 3.00%-4.99% | Minimum | | | |
Policyholder Account Balance [Line Items] | | | |
Range of guaranteed minimum crediting rates | 3% | | 3% |
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] | | | |
Policyholder account balances | $ 81.5 | | $ 89.6 |
Fixed interest annuities | 5.00% and greater | Minimum | | | |
Policyholder Account Balance [Line Items] | | | |
Range of guaranteed minimum crediting rates | 5% | | 5% |
Fixed interest annuities | At guaranteed minimum | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | $ 1,464.4 | | $ 1,687.7 |
Fixed interest annuities | At guaranteed minimum | 0.00%-2.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 96 | | 122.3 |
Fixed interest annuities | At guaranteed minimum | 3.00%-4.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 1,286.9 | | 1,475.8 |
Fixed interest annuities | At guaranteed minimum | 5.00% and greater | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 81.5 | | 89.6 |
Fixed interest annuities | 1-50 basis points above | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 252.9 | | 284.5 |
Fixed interest annuities | 1-50 basis points above | 0.00%-2.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 203.5 | | 257.4 |
Fixed interest annuities | 1-50 basis points above | 3.00%-4.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 49.4 | | 27.1 |
Fixed interest annuities | 1-50 basis points above | 5.00% and greater | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0 | | 0 |
Fixed interest annuities | 51-150 basis points above | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 341.2 | | 183.4 |
Fixed interest annuities | 51-150 basis points above | 0.00%-2.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 232.8 | | 183.4 |
Fixed interest annuities | 51-150 basis points above | 3.00%-4.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 108.4 | | 0 |
Fixed interest annuities | 51-150 basis points above | 5.00% and greater | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0 | | 0 |
Fixed interest annuities | Greater than 150 basis points above | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 101.9 | | 79.1 |
Fixed interest annuities | Greater than 150 basis points above | 0.00%-2.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 81 | | 79.1 |
Fixed interest annuities | Greater than 150 basis points above | 3.00%-4.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 20.9 | | 0 |
Fixed interest annuities | Greater than 150 basis points above | 5.00% and greater | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0 | | 0 |
Other annuities | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 136 | | 141.4 |
Other annuities | 0.00%-2.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | $ 57.4 | | $ 61.7 |
Other annuities | 0.00%-2.99% | Minimum | | | |
Policyholder Account Balance [Line Items] | | | |
Range of guaranteed minimum crediting rates | 0% | | 0% |
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] | | | |
Policyholder account balances | $ 45.4 | | $ 46.4 |
Other annuities | 3.00%-4.99% | Minimum | | | |
Policyholder Account Balance [Line Items] | | | |
Range of guaranteed minimum crediting rates | 3% | | 3% |
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] | | | |
Policyholder account balances | $ 33.2 | | $ 33.3 |
Other annuities | 5.00% and greater | Minimum | | | |
Policyholder Account Balance [Line Items] | | | |
Range of guaranteed minimum crediting rates | 5% | | 5% |
Other annuities | At guaranteed minimum | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | $ 112.5 | | $ 116.1 |
Other annuities | At guaranteed minimum | 0.00%-2.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 33.9 | | 36.4 |
Other annuities | At guaranteed minimum | 3.00%-4.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 45.4 | | 46.4 |
Other annuities | At guaranteed minimum | 5.00% and greater | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 33.2 | | 33.3 |
Other annuities | 1-50 basis points above | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 23.5 | | 25.3 |
Other annuities | 1-50 basis points above | 0.00%-2.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 23.5 | | 25.3 |
Other annuities | 1-50 basis points above | 3.00%-4.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0 | | 0 |
Other annuities | 1-50 basis points above | 5.00% and greater | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0 | | 0 |
Other annuities | 51-150 basis points above | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0 | | 0 |
Other annuities | 51-150 basis points above | 0.00%-2.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0 | | 0 |
Other annuities | 51-150 basis points above | 3.00%-4.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0 | | 0 |
Other annuities | 51-150 basis points above | 5.00% and greater | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0 | | 0 |
Other annuities | Greater than 150 basis points above | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0 | | 0 |
Other annuities | Greater than 150 basis points above | 0.00%-2.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0 | | 0 |
Other annuities | Greater than 150 basis points above | 3.00%-4.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0 | | 0 |
Other annuities | Greater than 150 basis points above | 5.00% and greater | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0 | | 0 |
Interest-sensitive life | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 1,401.1 | | 1,344.8 |
Interest-sensitive life | 0.00%-2.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | $ 716.6 | | $ 662.8 |
Interest-sensitive life | 0.00%-2.99% | Minimum | | | |
Policyholder Account Balance [Line Items] | | | |
Range of guaranteed minimum crediting rates | 0% | | 0% |
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] | | | |
Policyholder account balances | $ 663.1 | | $ 659.7 |
Interest-sensitive life | 3.00%-4.99% | Minimum | | | |
Policyholder Account Balance [Line Items] | | | |
Range of guaranteed minimum crediting rates | 3% | | 3% |
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] | | | |
Policyholder account balances | $ 21.4 | | $ 22.3 |
Interest-sensitive life | 5.00% and greater | Minimum | | | |
Policyholder Account Balance [Line Items] | | | |
Range of guaranteed minimum crediting rates | 5% | | 5% |
Interest-sensitive life | At guaranteed minimum | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | $ 473.3 | | $ 495 |
Interest-sensitive life | At guaranteed minimum | 0.00%-2.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 14.3 | | 22 |
Interest-sensitive life | At guaranteed minimum | 3.00%-4.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 438.1 | | 451.2 |
Interest-sensitive life | At guaranteed minimum | 5.00% and greater | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 20.9 | | 21.8 |
Interest-sensitive life | 1-50 basis points above | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 49.5 | | 88.2 |
Interest-sensitive life | 1-50 basis points above | 0.00%-2.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0 | | 37.2 |
Interest-sensitive life | 1-50 basis points above | 3.00%-4.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 49 | | 50.5 |
Interest-sensitive life | 1-50 basis points above | 5.00% and greater | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0.5 | | 0.5 |
Interest-sensitive life | 51-150 basis points above | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 175.5 | | 456 |
Interest-sensitive life | 51-150 basis points above | 0.00%-2.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0.5 | | 298.5 |
Interest-sensitive life | 51-150 basis points above | 3.00%-4.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 175 | | 157.5 |
Interest-sensitive life | 51-150 basis points above | 5.00% and greater | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0 | | 0 |
Interest-sensitive life | Greater than 150 basis points above | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 702.8 | | 305.6 |
Interest-sensitive life | Greater than 150 basis points above | 0.00%-2.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 701.8 | | 305.1 |
Interest-sensitive life | Greater than 150 basis points above | 3.00%-4.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 1 | | 0.5 |
Interest-sensitive life | Greater than 150 basis points above | 5.00% and greater | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0 | | 0 |
Other | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 374.5 | | 392.1 |
Other | 0.00%-2.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | $ 351.7 | | $ 368.7 |
Other | 0.00%-2.99% | Minimum | | | |
Policyholder Account Balance [Line Items] | | | |
Range of guaranteed minimum crediting rates | 0% | | 0% |
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] | | | |
Policyholder account balances | $ 22.6 | | $ 23.2 |
Other | 3.00%-4.99% | Minimum | | | |
Policyholder Account Balance [Line Items] | | | |
Range of guaranteed minimum crediting rates | 3% | | 3% |
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] | | | |
Policyholder account balances | $ 0.2 | | $ 0.2 |
Other | 5.00% and greater | Minimum | | | |
Policyholder Account Balance [Line Items] | | | |
Range of guaranteed minimum crediting rates | 5% | | 5% |
Other | At guaranteed minimum | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | $ 39.6 | | $ 40.9 |
Other | At guaranteed minimum | 0.00%-2.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 16.8 | | 17.5 |
Other | At guaranteed minimum | 3.00%-4.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 22.6 | | 23.2 |
Other | At guaranteed minimum | 5.00% and greater | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0.2 | | 0.2 |
Other | 1-50 basis points above | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 334.9 | | 351.2 |
Other | 1-50 basis points above | 0.00%-2.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 334.9 | | 351.2 |
Other | 1-50 basis points above | 3.00%-4.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0 | | 0 |
Other | 1-50 basis points above | 5.00% and greater | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0 | | 0 |
Other | 51-150 basis points above | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0 | | 0 |
Other | 51-150 basis points above | 0.00%-2.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0 | | 0 |
Other | 51-150 basis points above | 3.00%-4.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0 | | 0 |
Other | 51-150 basis points above | 5.00% and greater | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0 | | 0 |
Other | Greater than 150 basis points above | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0 | | 0 |
Other | Greater than 150 basis points above | 0.00%-2.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0 | | 0 |
Other | Greater than 150 basis points above | 3.00%-4.99% | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0 | | 0 |
Other | Greater than 150 basis points above | 5.00% and greater | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 0 | | 0 |
Fixed indexed annuities | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | 10,594.8 | | 9,960.6 |
Funding agreements | | | |
Policyholder Account Balance [Line Items] | | | |
Policyholder account balances | $ 2,573.7 | | $ 1,408.2 |