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Fair Value Measurements - Amortized Cost and Fair Value of Debt Securities (Details)
$ in Millions
Mar. 31, 2024
USD ($)
 [1]
Fair Value Disclosures [Abstract]  
Mature in less than one year $ 272.1
Mature in one to five years 724.7
Mature in more than five years 147.8
Total Amortized Cost 1,144.6
Mature in less than one year 270.3
Mature in one to five years 721.7
Mature in more than five years 147.0
Estimated Fair Value $ 1,139.0
[1] Available-for-sale investments are included in Short-term investments in the condensed consolidated balance sheets.