Investments - Schedule of Net Investment Gains (Losses) (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
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| Debt securities, available for sale | ||||
| Gross realized gains | $ 5.2 | $ 3.0 | $ 15.2 | $ 10.1 |
| Gross realized losses | (3.4) | (5.4) | (6.4) | (14.5) |
| Net realized gains (losses) on Debt securities, available for sale | 1.8 | (2.4) | 8.8 | (4.4) |
| Debt securities, trading | ||||
| Net realized gains (losses) | (1.3) | (0.3) | (1.3) | (1.8) |
| Net unrealized gains (losses) | 1.4 | 2.0 | (0.2) | 3.8 |
| Other long-term investments | ||||
| Net realized gains (losses) | 44.5 | (0.2) | 58.9 | (2.3) |
| Net unrealized gains (losses) | (39.4) | 1.1 | (47.8) | 3.7 |
| Other | 0.9 | 0.5 | 0.9 | 1.4 |
| Total net investment gains (losses) | $ 7.9 | $ 0.7 | $ 19.3 | $ 0.4 |
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- Definition Gains (Losses) On Other Investments No definition available.
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- Definition Net Realized Or Unrealized Gain Loss On Other Long-Term Investments No definition available.
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- Definition Other Long-Term Investments, Net Realized Gains (Losses) No definition available.
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- Definition Other Long-Term Investments, Net Unrealized Gains (Losses) No definition available.
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- References No definition available.
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- Definition Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in net income (trading). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in net income (trading). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of realized and unrealized gain (loss) on investment. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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