Fair Value of Financial Instruments (Tables)

9 Months Ended

Dec. 31, 2020

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 as of December 31, 2020 and March 31, 2020 (in millions):

	December 31, 2020				March 31, 2020
	Carrying Amount (1)		Fair Value		Carrying Amount (1)		Fair Value
Revolving Credit Facility	$	2,345.5	$	2,356.6	$	2,373.9	$	2,388.5
Term Loan Facility	—		—		1,708.9		1,723.5
Bridge Loan Facility	—		—		608.8		615.0
3.922% 2021 Notes	997.5		1,014.0		993.1		985.0
4.333% 2023 Notes	991.4		1,083.0		988.8		990.0
2.670% 2023 Notes	996.1		1,047.2		—		—
0.972% 2024 Notes	1,393.7		1,403.6		—		—
4.250% 2025 Notes	1,184.7		1,257.0		—		—
2015 Senior Convertible Debt	187.9		665.8		910.1		1,601.8
2017 Senior Convertible Debt	352.0		914.3		1,552.8		2,130.3
2020 Senior Convertible Debt	548.6		736.7		—		—
2017 Junior Convertible Debt	143.6		561.9		345.8		656.2
Total	$	9,141.0	$	11,040.1	$	9,482.2	$	11,090.3

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