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Cash, Cash Equivalents and Short-Term Investments - Contractual Maturities (Details) $ in Millions	Dec. 31, 2023 USD ($)
Amortized cost
Due within one year	$ 306.9
Due between one to three years	407.1
Due after three years	47.8
Total	761.8
Estimated fair value
Due within one year	304.2
Due between one to three years	390.7
Due after three years	46.2
Total	$ 741.1

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