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Debt - Convertible Debt - Narrative (Details) - USD ($)		12 Months Ended
	May 31, 2024	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Debt Instrument [Line Items]
Principal amount per note		$ 1,000
Debt issuance costs, net		19,500,000	$ 5,500,000
Capped options indexed to equity, costs		160,100,000	0	$ 0
2024 Senior Convertible Debt | Senior subordinated convertible debt
Debt Instrument [Line Items]
Principal amount per note	$ 1,250,000,000
Debt issuance costs, net	16,500,000	$ 14,000,000.0	$ 0
Capped options indexed to equity, costs	$ 105,000,000.0
2024 Senior Convertible Debt | Senior subordinated convertible debt | Maximum
Debt Instrument [Line Items]
Option indexed to equity, strike price (in dollars per share)	$ 167.23

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