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Derivatives - Schedule of Derivative Instruments (Details) € in Millions, £ in Millions, $ in Millions | Jun. 30, 2025 GBP (£) | Jun. 30, 2025 EUR (€) | Jun. 30, 2025 USD ($) | Mar. 31, 2025 GBP (£) | Mar. 31, 2025 EUR (€) | Mar. 31, 2025 USD ($)
--- | --- | --- | --- | --- | --- | ---
Designated as Hedging Instrument |  |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |
Derivative, notional amount | £ | £ 325.0 |  |  | £ 335.0 |  |
Designated as Hedging Instrument | Cash Flow Hedging |  |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |
Derivative, notional amount | $ |  |  | $ 421 |  |  | $ 428
Not Designated as Hedging Instrument |  |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |
Derivative, notional amount |  | € 0.0 | $ 0 |  | € 5.0 | $ 5

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