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Fair Value of Financial Instruments (Tables)

12 Months Ended

Mar. 31, 2022

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,
			2022												2021
			Carrying Amount(1)						Fair Value						Carrying Amount(1)						Fair Value
Revolving Credit Facility			$	1,388.5					$	1,399.1					$	2,336.6					$	2,346.6


3.922% 2021 Notes			—						—						999.0						1,004.3
4.333% 2023 Notes			995.8						1,017.1						992.3						1,022.4
2.670% 2023 Notes			997.9						997.7						996.4						1,040.8
0.972% 2024 Notes			1,396.2						1,343.9						1,394.2						1,394.0
0.983% 2024 Notes			996.4						946.3						—						—
4.250% 2025 Notes			1,188.5						1,213.6						1,185.5						1,252.6
2015 Senior Convertible Debt			30.6						115.4						120.6						485.4
2017 Senior Convertible Debt			104.1						285.6						260.2						731.4
2020 Senior Convertible Debt			584.0						765.5						555.6						778.3
2017 Junior Convertible Debt			5.4						21.7						63.7						272.9
Total			$	7,687.4					$	8,105.9					$	8,904.1					$	10,328.7

(1) The carrying amounts presented are net of debt discounts and debt issuance costs (see Note 6 for further information).