Prepaid Expenses and Other Assets - Summary of Prepaid Expenses and Other Currents Assets (Detail) - USD ($) $ in Millions	Mar. 31, 2026	Mar. 31, 2025
Prepaid expenses and other current assets
Prepayments	$ 55.4	$ 34.1
Collateral deposits	52.7	32.8
Interest Receivable	34.6	29.7
Other Receivables	14.5	3.8
Derivatives Financial Assets	28.2	3.2
Total Prepaid expenses and Other Current Assets	185.4	103.6
Other assets, noncurrent:
Office lease deposits	8.9	8.4
Other receivables, noncurrent	18.5	12.1
Total Other assets, noncurrent	$ 27.4	$ 20.5

Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

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Collateral deposits.

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Derivatives financial assets.

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Office lease deposits.

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Prepayments current.

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