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DEFERRED ACQUISITION COSTS, PRESENT VALUE OF FUTURE PROFITS AND SALES INDUCEMENTS - DEFERRED ACQUISITION COSTS (Details) - USD ($) $ in Millions | 9 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 30, 2022
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |
Beginning of period | $ 1,690.4 | $ 1,553.3
Capitalizations | 260.7 | 232.7
Amortization expense | (142.4) | (131.0)
End of period | 1,808.7 | 1,655.0
Fixed indexed annuities |  |
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |
Beginning of period | 365.6 | 313.0
Capitalizations | 65.5 | 68.6
Amortization expense | (34.1) | (29.7)
End of period | 397.0 | 351.9
Fixed interest annuities |  |
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |
Beginning of period | 19.6 | 19.0
Capitalizations | 8.0 | 2.6
Amortization expense | (2.8) | (2.6)
End of period | 24.8 | 19.0
Supplemental health |  |
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |
Beginning of period | 378.8 | 357.5
Capitalizations | 43.8 | 37.0
Amortization expense | (23.2) | (21.7)
End of period | 399.4 | 372.8
Medicare supplement |  |
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |
Beginning of period | 161.2 | 170.2
Capitalizations | 17.7 | 15.7
Amortization expense | (21.0) | (22.4)
End of period | 157.9 | 163.5
Long-term care |  |
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |
Beginning of period | 137.9 | 136.4
Capitalizations | 11.3 | 12.7
Amortization expense | (11.5) | (11.5)
End of period | 137.7 | 137.6
Interest-sensitive life |  |
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |
Beginning of period | 212.2 | 196.3
Capitalizations | 27.5 | 22.1
Amortization expense | (10.7) | (10.4)
End of period | 229.0 | 208.0
Traditional life |  |
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |
Beginning of period | 409.1 | 357.6
Capitalizations | 86.9 | 69.8
Amortization expense | (37.9) | (31.6)
End of period | 458.1 | 395.8
Funding agreements |  |
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |
Beginning of period | 6.0 | 3.3
Capitalizations | 0.0 | 4.2
Amortization expense | (1.2) | (1.1)
End of period | $ 4.8 | $ 6.4

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