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Debt (Tables)

12 Months Ended

Mar. 31, 2025

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments

The Company’s debt obligations are as follows:

			31 March
(Millions of US dollars)			2025						2024
Unsecured debt:
3.625% Senior notes due 2026 (€400.0 million)			$	433.4					$	431.0
5.000% Senior notes due 2028			400.0						400.0
Term Loan			290.6						298.1
Unamortized debt issuance costs			(4.5)						(6.5)
Total debt			1,119.5						1,122.6
Less current portion			(9.4)						(7.5)
Total Long-term debt			$	1,110.1					$	1,115.1
Weighted average interest rate of total debt			4.8		%				5.1		%
Fair value of Senior unsecured notes (Level 1)			$	817.7					$	811.5

Schedule of Debt Maturities

At 31 March 2025, the Company’s debt maturities for the next five fiscal years are as follows:

(Millions of US dollars)						Amount
Fiscal 2026						$	9.4
Fiscal 2027						448.4
Fiscal 2028						15.0
Fiscal 2029						651.2
Fiscal 2030						—
Total						$	1,124.0

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Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

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