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Cash, Cash Equivalents and Short-Term Investments - Schedule of Contractual Maturities of Short Term Investments (Details) $ in Millions	Sep. 30, 2024 USD ($)
Amortized cost
Due within one year	$ 100.1
Due between one to three years	256.9
Due after three years	23.8
Total	380.8
Estimated fair value
Due within one year	98.9
Due between one to three years	250.7
Due after three years	23.6
Total	$ 373.2

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