Annual report [Section 13 and 15(d), not S-K Item 405]

Employee Benefit Plans - Summary of Weighted Average Asset Allocation of Plan Assets by Asset Category (Detail)

v3.25.1
Employee Benefit Plans - Summary of Weighted Average Asset Allocation of Plan Assets by Asset Category (Detail)
Mar. 31, 2025
Mar. 31, 2024
Defined Benefit Plan Disclosure [Line Items]    
Weighted average asset allocation 100.00% 100.00%
Equity Securities [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Target Plan Asset Allocations 20.00%  
Weighted average asset allocation 22.00% 22.00%
Debt Securities [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Target Plan Asset Allocations 80.00%  
Weighted average asset allocation 78.00% 78.00%