Income Taxes - Additional Information (Details) - USD ($)	12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Income Tax Disclosure [Line Items]
Deferred tax assets related to federal tax credits	$ 0	$ 0
Deferred tax assets research and development	0	0
Unremitted earnings in foreign subsidiary	329,000,000	320,000,000
Income tax receivable		26,000,000
Income tax payable	11,000,000
Unrecognized tax benefits would effect on effective tax rate	63,000,000	52,000,000	$ 43,000,000
Net increase in unrecognized tax benefits	11,000,000
Income Tax Penalties Accrued	0	0	$ 0
Federal [Member]
Income Tax Disclosure [Line Items]
Operating loss carryforwards	0	0
State [Member]
Income Tax Disclosure [Line Items]
Operating loss carryforwards	$ 15,000,000	$ 13,000,000
Expiration Dates	Mar. 31, 2025