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Fair Value Measurements (Tables) | 6 Months Ended
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Jun. 30, 2024
Fair Value Disclosures [Abstract] |
Other fair value measurements | The following table presents their fair value (in millions) as of:
| June 30, 2024 |  | December 31, 2023
Senior unsecured notes | $ | 1,074.6 |  |  | $ | 1,079.3 |

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