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Fair Value Measurements - Amortized Cost and Fair Value of Debt Securities (Details) $ in Millions	Mar. 31, 2026 USD ($)
Fair Value Disclosures [Abstract]
Mature in less than one year	$ 53.3
Mature in one to five years	623.1
Mature in more than five years	297.8
Total Amortized Cost	974.2
Mature in less than one year	53.5
Mature in one to five years	623.8
Mature in more than five years	297.1
Estimated Fair Value	$ 974.4

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