Derivative Instruments - Narrative (Details) $ in Millions	12 Months Ended
Mar. 31, 2022 USD ($) counterparty	Mar. 31, 2021 USD ($)
Derivative [Line Items]
Number of counterparties \| counterparty	12
Maximum exposure to loss	$ 16
Designated as Hedging Instrument
Derivative [Line Items]
Foreign currency cash flow hedge gain to be reclassified into earnings during next 12 months	14
Pretax gain on derivatives designated for hedge accounting included other comprehensive income (loss)	23	$ 19
Pretax gain (loss) on derivative instruments	6	(5)
Not Designated as Hedging Instrument \| Foreign currency forward contracts
Derivative [Line Items]
Notional amount of derivative	2,100	2,100
Cash Flow Hedges \| Designated as Hedging Instrument \| Foreign currency forward contracts
Derivative [Line Items]
Notional amount of derivative	727	546
Net Investment Hedging \| Designated as Hedging Instrument \| Foreign currency-denominated debt
Derivative [Line Items]
Notional amount of derivative	300	$ 800
Pretax gain on derivatives designated for hedge accounting included other comprehensive income (loss)	$ 17

Concentration Risk, Credit Risk, Financial Instrument, Number of Counterparties

No definition available.

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- Definition

Maximum amount of loss due to credit risk that, based on the gross fair value of the financial instrument, the entity would incur if parties to the financial instruments that make up the concentration failed completely to perform according to the terms of the contracts and the collateral or other security, if any, for the amount due proved to be of no value to the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (b)
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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.

+ References

No definition available.

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
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-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959

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- Definition

The estimated net amount of unrealized gains or losses on foreign currency cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
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-URI http://asc.fasb.org/extlink&oid=121549185&loc=d3e80748-113994

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- Definition

Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
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-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959

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- Definition

Amount, before tax and after reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
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