Fair Value Measurements - Investment by Maturity Dates (Details) $ in Millions	Dec. 31, 2025 USD ($)
Fair Value Disclosures [Abstract]
Due in 1 year or less	$ 3,267.4
Due in 1 year through 3 years	5,511.7
Total marketable securities	$ 8,779.1

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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