Hedging Activities - Schedule of Information Regarding Fair Value of Derivatives on a Gross Basis (Details) - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Derivatives designated for hedge accounting
Derivatives, Fair Value [Line Items]
Fair value of derivative asset, gross fair value	$ 76	$ 294
Fair value of derivative liability, gross fair value	146	19
Derivatives not designated for hedge accounting
Derivatives, Fair Value [Line Items]
Fair value of derivative asset, gross fair value	0	2
Fair value of derivative liability, gross fair value	1	0
Foreign Exchange Contract \| Derivatives not designated for hedge accounting \| Prepaid expenses and other
Derivatives, Fair Value [Line Items]
Fair value of derivative asset, gross fair value	0	2
Fair value of derivative liability, gross fair value	0	0
Derivative liability, notional amount	29	24
Foreign Exchange Contract \| Derivatives not designated for hedge accounting \| Other accrued liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative asset, gross fair value	0	0
Fair value of derivative liability, gross fair value	1	0
Derivative liability, notional amount	10	5
Currency Swap \| Derivatives designated for hedge accounting \| Prepaid expenses and other
Derivatives, Fair Value [Line Items]
Fair value of derivative asset, gross fair value	4	112
Currency Swap \| Derivatives designated for hedge accounting \| Other accrued liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liability, gross fair value	47	19
Currency Swap \| Derivatives designated for hedge accounting \| Prepaid expenses and other/Other accrued liabilities
Derivatives, Fair Value [Line Items]
Derivative asset, notional amount	826	1,279
Currency Swap \| Derivatives designated for hedge accounting \| Other Noncurrent Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative asset, gross fair value	72	182
Currency Swap \| Derivatives designated for hedge accounting \| Other Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liability, gross fair value	92	0
Currency Swap \| Derivatives designated for hedge accounting \| Other non-current assets/liabilities
Derivatives, Fair Value [Line Items]
Derivative asset, notional amount	2,663	3,313
Interest Rate Swap \| Derivatives designated for hedge accounting \| Other accrued liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative asset, gross fair value	0	0
Fair value of derivative liability, gross fair value	7	0
Derivative asset, notional amount	$ 704	$ 0

Nominal or face amount used to calculate payments on the derivative asset.

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