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Significant Accounting Policies - ASU 2020-06 (Details) - USD ($) $ in Millions	Mar. 31, 2022	Mar. 31, 2023
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings	$ 4,175.2	$ 5,764.1
Accounting Standards Update 2020-06 | Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Additional Paid in Capital	128.3
Retained earnings	46.5
Accounting Standards Update 2020-06 | Convertible Debt | Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase in debt instrument	$ 105.8

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