Reinsurance - Effects Of Reinsurance (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Premiums and other considerations: | ||||
| Premiums and other considerations, Direct | $ 2,034.7 | $ 1,661.4 | $ 4,924.0 | $ 5,082.9 |
| Premiums and other considerations, Ceded | (136.8) | (128.6) | (417.2) | (402.3) |
| Net premiums and other considerations | 1,897.9 | 1,532.8 | 4,506.8 | 4,680.6 |
| Benefits, claims and settlement expenses: | ||||
| Benefits, claims and settlement expenses, Direct | 2,723.8 | 2,356.8 | 7,166.2 | 7,277.1 |
| Benefits, claims and settlement expenses, Ceded | (405.1) | (392.7) | (1,244.3) | (1,253.1) |
| Net benefits, claims and settlement expenses | 2,318.7 | 1,964.1 | 5,921.9 | 6,024.0 |
| LFPB remeasurement (gain) loss: | ||||
| LFPB remeasurement (gain) loss, Direct | 68.5 | 51.8 | 92.5 | 46.1 |
| LFPB remeasurement (gain) loss, Ceded | (45.1) | 9.1 | (76.4) | 12.7 |
| Net LFPB remeasurement (gain) loss | $ 23.4 | $ 60.9 | $ 16.1 | $ 58.8 |
| X | ||||||||||
- Definition Amount, before premiums ceded to other entities, of premiums earned and premiums assumed by the entity. No definition available.
|
| X | ||||||||||
- Definition Amount for policies ceded, of remeasurement gain (loss) on liability for future policy benefit from application of revised benefit ratio as of contract issue. Includes, but is not limited to, remeasurement gain (loss) for annuitization insurance benefit, death and other insurance benefits, and traditional and limited-payment contracts. No definition available.
|
| X | ||||||||||
- Definition Amount before effect of policies ceded, of remeasurement gain (loss) on liability for future policy benefit from application of revised benefit ratio as of contract issue. Includes, but is not limited to, remeasurement gain (loss) for annuitization insurance benefit, death and other insurance benefits, and traditional and limited-payment contracts. No definition available.
|
| X | ||||||||||
- Definition Amount, before effect of policies ceded, of expense related to provision for policy benefits and costs incurred and policies assumed. No definition available.
|
| X | ||||||||||
- Definition Amount of earned premiums ceded to other entities. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of remeasurement gain (loss) on liability for future policy benefit from application of revised benefit ratio as of contract issue. Includes, but is not limited to, remeasurement gain (loss) for annuitization insurance benefit, death and other insurance benefits, and traditional and limited-payment contracts. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount, after effects of policies assumed or ceded, of expense related to the provision for policy benefits and costs incurred. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount, after premiums ceded to other entities and premiums assumed by the entity, of premiums earned. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of reduction of provision for policy benefits and costs incurred for policies ceded. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- References No definition available.
|