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Fair Value Measurements (Tables) | 3 Months Ended
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Mar. 31, 2022
Fair Value Disclosures [Abstract] |
Other fair value measurements | The following table presents their fair value (in millions):
| As of March 31, 2022 |  | As of December 31, 2021
Senior unsecured notes | $ | 913.9 |  |  | $ | 959.2 |

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