Pension and Profit Sharing Plans - Schedule of Assumptions Used in Net Periodic Benefit Cost and Benefit Obligations (Detail)	12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Retirement Benefits [Abstract]
Net Periodic Benefit Costs - Discount Rate	5.27%	4.99%	3.75%
Net Periodic Benefit Costs - Expected Return on Plan Assets	5.30%	5.00%	3.85%
Benefit Obligations - Discount Rate	5.53%	5.27%