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Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis and Carrying Value (Details) - USD ($) $ in Millions | Jun. 30, 2026 | Dec. 31, 2025
--- | --- | ---
Carrying Value |  |
Assets |  |
Cash and cash equivalents | $ 544.8 | $ 510.4
Marketable securities | 615.5 | 919.6
Liabilities |  |
Contingent consideration | 170.6 | 372.1
Fair Value | Level 1 |  |
Assets |  |
Cash and cash equivalents | 544.8 | 510.4
Marketable securities | 615.5 | 919.6
Liabilities |  |
Contingent consideration | 0.0 | 0.0
Fair Value | Level 2 |  |
Assets |  |
Cash and cash equivalents | 0.0 | 0.0
Marketable securities | 0.0 | 0.0
Liabilities |  |
Contingent consideration | 0.0 | 0.0
Fair Value | Level 3 |  |
Assets |  |
Cash and cash equivalents | 0.0 | 0.0
Marketable securities | 0.0 | 0.0
Liabilities |  |
Contingent consideration | $ 170.6 | $ 372.1

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