Employee Benefits (Details) - USD ($) $ in Millions	12 Months Ended
Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Retirement Benefits [Abstract]
Non-discretionary contributions	$ 8.4	$ 6.6	$ 6.0
Plan assets	52.5	40.1
Underfunded pension obligation	0.1	1.0
Net periodic benefit cost	$ 1.8	$ 1.3	$ 1.0

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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+ Details