Pension Benefits - Schedule of Other Changes in Accumulated Other Comprehensive Income (Details) - Non-U.S. Plans - Pension Plans, Defined Benefit - USD ($) $ in Millions	12 Months Ended
Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Net actuarial (gain) loss	$ 9	$ (7)	$ (32)
Prior service cost	0	1	0
Amortization of:
Net actuarial loss	(2)	(9)	(14)
Prior service credit	0	2	1
Foreign exchange impact and other	1	(5)	(5)
Total recognized in other comprehensive (income) loss	$ 8	$ (18)	$ (50)

Other Comprehensive Income Defined Benefit Plans Net Translation Gain Loss Arising During Period Before Tax

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Amount, before tax, of cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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Amount, before tax, of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) of defined benefit plan.

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Amount, before tax, after reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan.

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Amount, before tax, of gain (loss) for (increase) decrease in value of benefit obligation for change in actuarial assumptions and increase (decrease) in value of plan assets from experience different from that assumed of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

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Amount, before tax, of reclassification adjustment from accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan.

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