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v3.25.1

Long-Duration Insurance Contracts - Policyholder Account Balances (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Policyholder Account Balance [Roll Forward] |  |  |
Beginning balance | $ 5,100.3 |  |
Interest credited | 52.8 | $ 52.9 |
Ending balance | 5,079.6 |  | $ 5,100.3
Indexed Universal Life |  |  |
Policyholder Account Balance [Roll Forward] |  |  |
Beginning balance | 72.9 | 57.8 | 57.8
Premiums received | 6.0 | 3.9 |
Surrenders and withdrawals | (0.4) | (0.5) |
Benefit payments | 0.0 | 0.0 |
Net transfers from (to) separate account | (0.1) | (0.1) |
Interest credited | 1.0 | 0.8 |
Other | (1.2) | (0.9) |
Ending balance | $ 78.2 | $ 61.0 | 72.9
Weighted-average crediting rate | 5.30% | 5.60% |
Net amount at risk | $ 0.0 | $ 0.0 |
Cash surrender value | 59.3 | 43.3 |
Experience life |  |  |
Policyholder Account Balance [Roll Forward] |  |  |
Beginning balance | 58.0 | 61.2 | 61.2
Premiums received | (0.2) | (0.1) |
Surrenders and withdrawals | (0.8) | (1.3) |
Benefit payments | (0.3) | (0.5) |
Net transfers from (to) separate account | 0.0 | 0.0 |
Interest credited | 0.7 | 0.7 |
Other | 0.0 | 0.1 |
Ending balance | $ 57.4 | $ 60.1 | 58.0
Weighted-average crediting rate | 4.90% | 4.90% |
Net amount at risk | $ 0.0 | $ 0.0 |
Cash surrender value | 56.8 | 59.5 |
Fixed Account Annuities |  |  |
Policyholder Account Balance [Roll Forward] |  |  |
Beginning balance | 4,508.4 | 4,556.0 | 4,556.0
Premiums received | 43.4 | 49.0 |
Surrenders and withdrawals | (89.2) | (112.2) |
Benefit payments | (21.8) | (20.6) |
Net transfers from (to) separate account | 12.0 | 1.9 |
Interest credited | 42.7 | 41.7 |
Other | 0.4 | 4.1 |
Ending balance | $ 4,495.9 | $ 4,519.9 | 4,508.4
Weighted-average crediting rate | 3.90% | 3.70% |
Net amount at risk | $ 31.8 | $ 32.0 |
Cash surrender value | 4,447.4 | 4,468.2 |
Fixed Indexed Account Annuities |  |  |
Policyholder Account Balance [Roll Forward] |  |  |
Beginning balance | 409.5 | 449.0 | 449.0
Premiums received | 4.2 | 3.6 |
Surrenders and withdrawals | (13.2) | (13.3) |
Benefit payments | (1.7) | (0.8) |
Net transfers from (to) separate account | (0.2) | (0.8) |
Interest credited | 3.4 | 2.7 |
Other | (2.3) | (3.0) |
Ending balance | $ 399.7 | $ 437.4 | 409.5
Weighted-average crediting rate | 3.50% | 2.50% |
Net amount at risk | $ 0.0 | $ 0.0 |
Cash surrender value | 393.1 | 428.4 |
SPIA (non-life contingent) |  |  |
Policyholder Account Balance [Roll Forward] |  |  |
Beginning balance | 28.6 | 32.6 | 32.6
Premiums received | 0.6 | 0.8 |
Surrenders and withdrawals | (0.2) | (0.6) |
Benefit payments | (1.2) | (1.4) |
Net transfers from (to) separate account | 0.0 | 0.0 |
Interest credited | 0.3 | 0.2 |
Other | 0.2 | 0.0 |
Ending balance | $ 28.3 | $ 31.6 | $ 28.6
Weighted-average crediting rate | 4.20% | 3.10% |
Net amount at risk | $ 0.0 | $ 0.0 |
Cash surrender value | $ 28.0 | $ 31.4 |

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- Definition Amount of interest expense for allocation to policyholder account balance. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-7A Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-29F Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479868/944-20-45-2 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 13J -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-13J Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(6)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1 + Details
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