Investments - Investments in Unconsolidated Entities (Details) - USD ($) $ in Millions |
Sep. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Debt and Equity Securities, FV-NI [Line Items] | ||
| Other long-term investments | $ 276.5 | $ 315.1 |
| Equity method eligible unconsolidated entities, using the fair value option | ||
| Debt and Equity Securities, FV-NI [Line Items] | ||
| Other long-term investments | 66.0 | 66.3 |
| Equity method investments | ||
| Debt and Equity Securities, FV-NI [Line Items] | ||
| Other long-term investments | 46.0 | 33.1 |
| Other unconsolidated investments, at fair value | ||
| Debt and Equity Securities, FV-NI [Line Items] | ||
| Other long-term investments | 150.1 | 179.5 |
| Other unconsolidated investments, at cost | ||
| Debt and Equity Securities, FV-NI [Line Items] | ||
| Other long-term investments | 14.4 | 36.2 |
| Strategic investments and Limited liability companies and private equity securities | ||
| Debt and Equity Securities, FV-NI [Line Items] | ||
| Unfunded commitments | $ 30.0 | $ 58.5 |
| X | ||||||||||
- Definition The amount of unfunded commitments for which the entity is obligated, to those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments). Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of long-term investments classified as other. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- 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
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|