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Fair Value of Financial Instruments (Tables)

12 Months Ended

Mar. 31, 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):


			March 31,
			2023												2022
			Carrying Amount(1)						Fair Value						Carrying Amount(1)						Fair Value
Revolving Credit Facility			$	91.4					$	100.0					$	1,388.5					$	1,399.1



4.333% 2023 Notes			999.4						997.1						995.8						1,017.1
2.670% 2023 Notes			999.4						985.4						997.9						997.7
0.972% 2024 Notes			1,398.2						1,337.6						1,396.2						1,343.9
0.983% 2024 Notes			997.9						941.9						996.4						946.3
4.250% 2025 Notes			1,191.8						1,176.0						1,188.5						1,213.6
2015 Senior Convertible Debt			12.4						41.8						30.6						115.4
2017 Senior Convertible Debt			81.8						189.6						104.1						285.6
2020 Senior Convertible Debt			661.1						732.1						584.0						765.5
2017 Junior Convertible Debt			6.5						14.5						5.4						21.7
Total			$	6,439.9					$	6,516.0					$	7,687.4					$	8,105.9

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