Pension and Profit Sharing Plans - Additional information (Detail) $ in Millions	12 Months Ended
	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($) Employee CompensationPlan	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Employees fully vesting in employer's own contributions made beginning in 2007, requirement years		4 years
Costs relating to employer discretionary contributions		$ 8.3	$ 8.2	$ 8.0
Current actuarial estimates contributions		$ 1.1	0.7	0.6
Number of employees covered under multi-employer pension plans | Employee		50
Number of multi-employer plans | CompensationPlan		3
Expenses related to multi employer plans		$ 1.8	$ 1.7	$ 1.5
Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Collective bargaining agreement for employer covered under multi-employer plans, Expiration date, First		Feb. 29, 2024
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Collective bargaining agreement for employer covered under multi-employer plans, Expiration date, First		Mar. 31, 2025
Scenario Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
Current actuarial estimates contributions for fiscal year 2022	$ 0.0
Expenses related to multi employer plans	$ 1.9