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Debt - Schedule of Interest Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Debt Instrument [Line Items]
Amortization of Debt Issuance Cost (DIC) and Original Issue Discount (OID)	$ 6	$ 5	$ 4
Interest Rate Swaps	(10)	(15)	(1)
Other	1	1	1
Interest expense on debt	186	173	119
Term Loans | Term Loan A
Debt Instrument [Line Items]
Interest expense, debt, excluding amortization	100	108	63
Term Loans | Term Loan B
Debt Instrument [Line Items]
Interest expense, debt, excluding amortization	0	0	5
Revolving Credit Facility
Debt Instrument [Line Items]
Interest expense, debt, excluding amortization	1	1	0
Senior Notes
Debt Instrument [Line Items]
Interest expense, debt, excluding amortization	$ 88	$ 73	$ 47

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