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Fair Value Measurements - Amortized Cost and Fair Value of Debt Securities (Details) $ in Millions	Mar. 31, 2025 USD ($)	[1]
Fair Value Disclosures [Abstract]
Mature in less than one year	$ 84.2
Mature in one to five years	686.4
Mature in more than five years	288.4
Total Amortized Cost	1,059.0
Mature in less than one year	84.2
Mature in one to five years	690.6
Mature in more than five years	288.6
Estimated Fair Value	$ 1,063.4
[1] Available-for-sale investments are included in Short-term investments in the condensed consolidated balance sheets.

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