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- Definition

Derivative Instruments In Hedges, Settled At Fair Value, Net

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Derivative, Notional Amount, Entered Into During Period

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Derivative, Notional Amount, Terminated

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

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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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Nominal or face amount used to calculate payment on derivative.

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Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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Hedging Activities - Narrative (Details) € in Millions, £ in Millions, $ in Millions	1 Months Ended	3 Months Ended	12 Months Ended
	Jan. 31, 2026 USD ($)	Jun. 30, 2025 USD ($)	Mar. 31, 2026 USD ($)	Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2026 CAD ($)	Mar. 31, 2026 GBP (£)	Mar. 31, 2026 EUR (€)	Mar. 31, 2026 USD ($)	Dec. 31, 2025 EUR (€)	Nov. 30, 2025 EUR (€)	Sep. 30, 2025 EUR (€)	Mar. 31, 2025 CAD ($)	Mar. 31, 2025 GBP (£)	Mar. 31, 2025 EUR (€)	Mar. 31, 2025 USD ($)	Mar. 31, 2024 GBP (£)
Derivative [Line Items]
Other comprehensive income (loss), cash flow hedge, gain (loss), reclassification before tax				$ 0	$ 0
1.50% Euro Notes due November 17, 2025 \| Loans payable
Derivative [Line Items]
Interest rate on debt instruments (as percent)						1.50%	1.50%	1.50%	1.50%	1.50%
Cross-currency swaps \| Cash Flow Hedging \| Derivatives designated for hedge accounting:
Derivative [Line Items]
Other comprehensive income (loss), cash flow hedge, gain (loss), reclassification before tax			$ 0
Interest rate swaps (non-current) \| Fair Value Hedges \| Derivatives designated for hedge accounting:
Derivative [Line Items]
Notional									$ 1,300,000,000
Derivative, notional mount, terminated									500,000,000
Interest rate swaps (non-current) \| Cash Flow Hedging \| Derivatives designated for hedge accounting:
Derivative [Line Items]
Notional		$ 1,400,000,000
Derivative, notional amount, entered into during period		$ 550,000,000
Foreign currency forwards \| Cash Flow Hedging \| Derivatives designated for hedge accounting:
Derivative [Line Items]
Other comprehensive income (loss), cash flow hedge, gain (loss), reclassification before tax			$ 12,000,000		$ 0
CAD \| Cross-currency swaps \| Net Investment Hedging \| Derivatives designated for hedge accounting:
Derivative [Line Items]
Notional						$ 6,500							$ 6,500
EUR \| Cross-currency swaps \| Fair Value Hedges \| Derivatives designated for hedge accounting:
Derivative [Line Items]
Notional \| €								€ 500							€ 1,100
Derivative instruments in hedges, settled at fair value net \| €										€ 600		€ 600
Derivative instruments in hedges, acquired at fair value \| €											€ 600
USD \| Interest rate swaps (non-current) \| Fair Value Hedges \| Derivatives designated for hedge accounting:
Derivative [Line Items]
Notional									750,000,000							$ 750,000,000
USD \| Interest rate swaps (non-current) \| Cash Flow Hedging \| Derivatives designated for hedge accounting:
Derivative [Line Items]
Notional									$ 0							$ 850,000,000
USD \| Foreign currency forwards \| Cash Flow Hedging \| Derivatives designated for hedge accounting:
Derivative [Line Items]
Notional	$ 791,000,000
Other comprehensive income (loss), cash flow hedge, gain (loss), reclassification before tax	$ 30,000,000
GBP \| Cross-currency swaps \| Fair Value Hedges \| Derivatives designated for hedge accounting:
Derivative [Line Items]
Notional \| £							£ 450							£ 450
GBP \| Foreign currency forwards \| Cash Flow Hedging \| Derivatives designated for hedge accounting:
Derivative [Line Items]
Notional \| £							£ 0							£ 11			£ 45