Senior Notes and Other Long-Term Debt - Components of Long-Term Debt (Detail) - USD ($) $ in Thousands	Jun. 30, 2022	Mar. 31, 2022
Debt Instrument [Line Items]
Finance lease obligations (see Note 1)	$ 45,745	$ 45,752
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Other long-term debt	Other long-term debt
Total debt	$ 2,664,528	$ 2,524,361
Unamortized discount and debt issuance costs	(36,212)	(38,234)
Less: current portion of long-term debt	38,471	34,911
Total long-term debt	2,589,845	2,451,216
2028 Notes [Member]
Debt Instrument [Line Items]
Principal amount of debt	400,000	400,000
2027 Notes [Member]
Debt Instrument [Line Items]
Principal amount of debt	600,000	600,000
2025 Notes [Member]
Debt Instrument [Line Items]
Principal amount of debt	700,000	700,000
Term Loan Facility [Member]
Debt Instrument [Line Items]
Principal amount of debt	700,000	700,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Principal amount of debt	150,000
Ex-Im Credit Facility [Member]
Debt Instrument [Line Items]
Principal amount of debt	$ 68,783	$ 78,609

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount of unamortized debt discount (premium) and debt issuance costs.

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Present value of lessee's discounted obligation for lease payments from finance lease.

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Amount of long-term debt and lease obligation, classified as noncurrent.

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