Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

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Interest and debt related expenses associated with nonoperating financing activities of the entity.

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Fair value of the amount outstanding under the credit facility.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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The cash outflow for the settlement of obligation drawn from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

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Aggregate debt amount, borrowed.

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No definition available.

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The fee, expressed as a percentage of the margin on the unused portion of the revolving commitments.

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No definition available.

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Percentage of redemption price on aggregate principal amount of the EMTN Notes held.

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Weighted average interest rate of the revolving credit facility.

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Debt - Additional Information (Detail) £ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2026 USD ($)	Mar. 31, 2025 USD ($)	May 31, 2026 USD ($)	Mar. 31, 2026 GBP (£)	Nov. 30, 2025 USD ($)	Nov. 30, 2025 GBP (£)
Line of Credit Facility [Line Items]
Line of credit facility, fair value of amount outstanding		$ 128.4
Revolving credit facility of weighted average interest rate	7.22%			7.22%
Percentage of redemption price on aggregate principal amount	101.00%			101.00%
Debt instrument, interest rate, effective percentage	5.35%			5.35%
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Long term line of credit	$ 437.1
Line of credit facility, interest rate at period end	1.75%
Line of credit facility, commitment fee percentage	35.00%
Line of credit facility, fair value of amount outstanding			$ 0.0
Debt instrument, unused borrowing capacity, amount	$ 437.1	297.1
Repayments of long term lines of credit	397.9	$ 387.3
Short-Term Debt [Member]
Line of Credit Facility [Line Items]
Accrued interest payable	6.0
Interest expense	6.1
Senior Notes [Member]
Line of Credit Facility [Line Items]
Debt instrument, face amount	$ 331.1			£ 250.0
Debt instrument, aggregate amount					$ 2,600.0	£ 2,000.0
Debt instrument, interest rate, stated percentage	5.10%			5.10%
Debt instrument, maturity date	Nov. 25, 2030