Fair Value Measurements - Investment by Maturity Dates (Details) $ in Millions	Jun. 30, 2025 USD ($)
Fair Value Disclosures [Abstract]
Due in 1 year or less	$ 2,617.0
Due in 1 to 3 years	4,001.9
Total debt securities	$ 6,618.9

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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