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v3.25.3

Fair Value Measurements - Schedule of Carrying Amounts and Estimated Fair Values by Input Level (Details) - USD ($) $ in Millions | 9 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2025 | Dec. 31, 2024 | May 31, 2020
Financial liabilities: |  |  |
Proceeds from sale of investments | $ 12.0 |  |
Recognized gain on sale | $ 0.6 |  |
Senior Notes | 5.625% Notes |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Interest rate | 5.625% | 5.625% |
Senior Notes | 4.125% Notes |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Interest rate | 4.125% | 4.125% |
Convertible Notes | Convertible Notes |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Interest rate | 2.75% |  | 2.75%
Recurring | Level 1 |  |  |
Financial assets: |  |  |
Cash and cash equivalents | $ 660.1 | $ 706.6 |
Equity securities |  | 10.6 |
Available-for-sale debt securities | 0.0 | 0.0 |
Held-to-maturity securities | 0.0 | 0.0 |
Promissory notes | 0.0 | 0.0 |
Financial liabilities: |  |  |
Other liabilities | 0.0 | 0.0 |
Recurring | Level 1 | Amended Credit Facilities |  |  |
Financial liabilities: |  |  |
Long-term debt | 0.0 | 0.0 |
Recurring | Level 1 | Senior Notes | 5.625% Notes |  |  |
Financial liabilities: |  |  |
Long-term debt | 0.0 | 0.0 |
Recurring | Level 1 | Senior Notes | 4.125% Notes |  |  |
Financial liabilities: |  |  |
Long-term debt | 0.0 | 0.0 |
Recurring | Level 1 | Convertible Notes | Convertible Notes |  |  |
Financial liabilities: |  |  |
Long-term debt | 0.0 | 0.0 |
Recurring | Level 1 | Other long-term obligations |  |  |
Financial liabilities: |  |  |
Long-term debt | 0.0 | 0.0 |
Recurring | Level 2 |  |  |
Financial assets: |  |  |
Cash and cash equivalents | 0.0 | 0.0 |
Equity securities |  | 0.0 |
Available-for-sale debt securities | 0.0 | 0.0 |
Held-to-maturity securities | 6.7 | 6.7 |
Promissory notes | 7.9 | 7.9 |
Financial liabilities: |  |  |
Other liabilities | 2.7 | 2.7 |
Recurring | Level 2 | Amended Credit Facilities |  |  |
Financial liabilities: |  |  |
Long-term debt | 1,933.5 | 1,453.9 |
Recurring | Level 2 | Senior Notes | 5.625% Notes |  |  |
Financial liabilities: |  |  |
Long-term debt | 399.5 | 393.0 |
Recurring | Level 2 | Senior Notes | 4.125% Notes |  |  |
Financial liabilities: |  |  |
Long-term debt | 372.0 | 356.0 |
Recurring | Level 2 | Convertible Notes | Convertible Notes |  |  |
Financial liabilities: |  |  |
Long-term debt | 111.5 | 355.7 |
Recurring | Level 2 | Other long-term obligations |  |  |
Financial liabilities: |  |  |
Long-term debt | 7.6 | 8.1 |
Recurring | Level 3 |  |  |
Financial assets: |  |  |
Cash and cash equivalents | 0.0 | 0.0 |
Equity securities |  | 0.0 |
Available-for-sale debt securities | 31.5 | 31.5 |
Held-to-maturity securities | 0.0 | 0.0 |
Promissory notes | 0.0 | 0.0 |
Financial liabilities: |  |  |
Other liabilities | 40.1 | 41.9 |
Recurring | Level 3 | Amended Credit Facilities |  |  |
Financial liabilities: |  |  |
Long-term debt | 0.0 | 0.0 |
Recurring | Level 3 | Senior Notes | 5.625% Notes |  |  |
Financial liabilities: |  |  |
Long-term debt | 0.0 | 0.0 |
Recurring | Level 3 | Senior Notes | 4.125% Notes |  |  |
Financial liabilities: |  |  |
Long-term debt | 0.0 | 0.0 |
Recurring | Level 3 | Convertible Notes | Convertible Notes |  |  |
Financial liabilities: |  |  |
Long-term debt | 0.0 | 0.0 |
Recurring | Level 3 | Other long-term obligations |  |  |
Financial liabilities: |  |  |
Long-term debt | 0.0 | 201.2 |
Recurring | Carrying Amount |  |  |
Financial assets: |  |  |
Cash and cash equivalents | 660.1 | 706.6 |
Equity securities |  | 10.6 |
Available-for-sale debt securities | 31.5 | 31.5 |
Held-to-maturity securities | 6.7 | 6.7 |
Promissory notes | 7.9 | 7.9 |
Financial liabilities: |  |  |
Other liabilities | 42.8 | 44.6 |
Recurring | Carrying Amount | Amended Credit Facilities |  |  |
Financial liabilities: |  |  |
Long-term debt | 1,923.6 | 1,437.0 |
Recurring | Carrying Amount | Senior Notes | 5.625% Notes |  |  |
Financial liabilities: |  |  |
Long-term debt | 399.8 | 399.8 |
Recurring | Carrying Amount | Senior Notes | 4.125% Notes |  |  |
Financial liabilities: |  |  |
Long-term debt | 396.2 | 395.5 |
Recurring | Carrying Amount | Convertible Notes | Convertible Notes |  |  |
Financial liabilities: |  |  |
Long-term debt | 106.3 | 327.9 |
Recurring | Carrying Amount | Other long-term obligations |  |  |
Financial liabilities: |  |  |
Long-term debt | 8.6 | 210.5 |
Recurring | Fair Value |  |  |
Financial assets: |  |  |
Cash and cash equivalents | 660.1 | 706.6 |
Equity securities |  | 10.6 |
Available-for-sale debt securities | 31.5 | 31.5 |
Held-to-maturity securities | 6.7 | 6.7 |
Promissory notes | 7.9 | 7.9 |
Financial liabilities: |  |  |
Other liabilities | 42.8 | 44.6 |
Recurring | Fair Value | Amended Credit Facilities |  |  |
Financial liabilities: |  |  |
Long-term debt | 1,933.5 | 1,453.9 |
Recurring | Fair Value | Senior Notes | 5.625% Notes |  |  |
Financial liabilities: |  |  |
Long-term debt | 399.5 | 393.0 |
Recurring | Fair Value | Senior Notes | 4.125% Notes |  |  |
Financial liabilities: |  |  |
Long-term debt | 372.0 | 356.0 |
Recurring | Fair Value | Convertible Notes | Convertible Notes |  |  |
Financial liabilities: |  |  |
Long-term debt | 111.5 | 355.7 |
Recurring | Fair Value | Other long-term obligations |  |  |
Financial liabilities: |  |  |
Long-term debt | $ 7.6 | $ 209.3 |

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