Derivative Financial Instruments Gross Notional Amounts and Fair Values for Currency Derivatives (Details) - USD ($) $ in Millions	Jun. 30, 2026	Mar. 31, 2026
Forward contracts to purchase
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Fair value of foreign currency contracts outstanding, Assets	$ 0	$ 4
Fair value of foreign currency contracts outstanding, Liabilities	13	4
Forward contracts to sell
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Fair value of foreign currency contracts outstanding, Assets	45	28
Fair value of foreign currency contracts outstanding, Liabilities	6	15
Designated as Hedging Instrument \| Forward contracts to purchase
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	389	428
Designated as Hedging Instrument \| Forward contracts to sell
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	1,713	1,576
United States Dollar \| Not Designated as Hedging Instrument \| Forward contracts to purchase
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	539	638
United States Dollar \| Not Designated as Hedging Instrument \| Forward contracts to sell
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	359	554
Balance Sheet Hedging \| Not Designated as Hedging Instrument \| Forward contracts to purchase
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Current	0	0
Derivative Liability, Current	6	6
Balance Sheet Hedging \| Not Designated as Hedging Instrument \| Forward contracts to sell
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Current	5	3
Derivative Liability, Current	$ 0	$ 0

Fair value of all asset derivatives designated as cash flow hedging instruments.

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Fair value of all liability derivatives designated as cash flow hedging instruments.

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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