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Fair Value Measurements and Investments Amortized Cost and Fair Value of Debt Securities (Details) $ in Millions | Dec. 31, 2024 USD ($) | [1]
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Fair Value Disclosures [Abstract] |
Mature in less than one year | $ 87.6
Mature in one to five years | 712.2
Mature in more than five years | 299.9
Total Amortized Cost | 1,099.7
Mature in less than one year | 87.5
Mature in one to five years | 712.5
Mature in more than five years | 297.6
Estimated Fair Value | $ 1,097.6
[1] | Available-for-sale investments are included in Short-term investments in the consolidated balance sheets.

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