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Fair Value of Financial Instruments (Tables)

6 Months Ended

Sep. 30, 2023

Fair Value Disclosures [Abstract]

Summary of Carrying Amount and Fair Values

The following table shows the carrying amounts and fair values of the Company's debt obligations (in millions):



			September 30, 2023												March 31, 2023
			Carrying Amount(1)						Fair Value						Carrying Amount(1)						Fair Value
Revolving Credit Facility			$	31.9					$	39.0					$	91.4					$	100.0



2025 Term Loan Facility			749.1						750.0						—						—
Commercial Paper			996.7						1,000.0						—						—
4.333% 2023 Notes			—						—						999.4						997.1
2.670% 2023 Notes			—						—						999.4						985.4
0.972% 2024 Notes			1,399.2						1,374.1						1,398.2						1,337.6
0.983% 2024 Notes			998.7						955.1						997.9						941.9
4.250% 2025 Notes			1,193.3						1,162.9						1,191.8						1,176.0
2015 Senior Convertible Debt			6.7						23.6						12.4						41.8
2017 Senior Convertible Debt			37.8						84.1						81.8						189.6
2020 Senior Convertible Debt			662.4						693.9						661.1						732.1
2017 Junior Convertible Debt			—						—						6.5						14.5
Total			$	6,075.8					$	6,082.7					$	6,439.9					$	6,516.0

(1) The carrying amounts presented are net of debt discounts and debt issuance costs (see Note 5 for further information).