Pension and Profit Sharing Plans - Additional information (Detail)	12 Months Ended
	Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($) Employee Compensationplan	Mar. 31, 2023 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Current actuarial estimates contributions for fiscal year 2023	$ 0
Employees fully vesting in employer's own contributions made beginning in 2007, requirement years	4 years
Costs relating to employer discretionary contributions	$ 9,800,000	$ 9,600,000	$ 9,100,000
Current actuarial estimates contributions	2,700,000	$ 1,800,000	1,400,000
Number of employees covered under multi-employer pension plans | Employee		50
Number of multi-employer plans | Compensationplan		2
Expenses related to multi employer plans	$ 500,000	$ 1,700,000	$ 1,800,000
Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Collective bargaining agreement for employer covered under multi-employer plans, Expiration date, First		Feb. 29, 2024