Hedging Activities - Derivative Instruments Fair Value (Details) - USD ($) $ in Millions	Dec. 31, 2021	Mar. 31, 2021
Derivatives designated for hedge accounting
Derivatives, Fair Value [Line Items]
Fair value of derivative, asset	$ 69	$ 76
Fair value of derivative, liability	86	146
Derivatives designated for hedge accounting \| Cross currency swap \| Prepaid expenses and other/Other accrued liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative, asset	1	4
Fair value of derivative, liability	28	47
U.S. Dollar notional amount, asset	570	826
Derivatives designated for hedge accounting \| Cross currency swap \| Other non-current assets/liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative, asset	66	72
Fair value of derivative, liability	56	92
U.S. Dollar notional amount, asset	2,205	2,663
Derivatives designated for hedge accounting \| Forward starting interest rate swaps \| Other non-current assets/liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative, asset	2	0
Fair value of derivative, liability	2	0
U.S. Dollar, notional amount, liability	500	0
Derivatives designated for hedge accounting \| Forward starting interest rate swaps \| Other accrued liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative, asset	0	0
Fair value of derivative, liability	0	7
U.S. Dollar, notional amount, liability	0	704
Derivatives not designated for hedge accounting
Derivatives, Fair Value [Line Items]
Fair value of derivative, asset	0	0
Fair value of derivative, liability	0	1
Derivatives not designated for hedge accounting \| Foreign Exchange Contract \| Other accrued liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative, asset	0	0
Fair value of derivative, liability	0	1
U.S. Dollar, notional amount, liability	5	10
Derivatives not designated for hedge accounting \| Foreign Exchange Contract \| Prepaid expenses and other
Derivatives, Fair Value [Line Items]
Fair value of derivative, asset	0	0
Fair value of derivative, liability	0	0
U.S. Dollar notional amount, asset	$ 0	$ 29

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

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