Debt - Schedule of Debt (Details) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Debt Instrument [Line Items] | ||
| Total carrying value | $ 3,038.3 | $ 2,728.7 |
| Debt issuance costs | (34.3) | (37.4) |
| Debt | 3,004.0 | 2,691.3 |
| Senior bank debt | ||
| Debt Instrument [Line Items] | ||
| Total carrying value | 650.0 | 0.0 |
| Senior notes | ||
| Debt Instrument [Line Items] | ||
| Total carrying value | 1,172.2 | 1,172.0 |
| Junior subordinated notes | ||
| Debt Instrument [Line Items] | ||
| Total carrying value | 1,216.1 | 1,216.1 |
| Junior convertible securities | ||
| Debt Instrument [Line Items] | ||
| Total carrying value | $ 0.0 | $ 340.6 |
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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