v3.25.2
Employee Benefits - Summary of Actuarial Assumptions (Detail)
Mar. 31, 2025
Mar. 31, 2024
Bottom of Range [Member]    
Disclosure Of Defined Benefit Plans [Line Items]    
Discount rate (per annum) 6.40% 6.90%
Future salary growth (per annum) 7.00% 7.00%
Withdrawal rate 6.00% 5.00%
Top of Range [Member]    
Disclosure Of Defined Benefit Plans [Line Items]    
Discount rate (per annum) 6.50% 7.00%
Future salary growth (per annum) 12.00% 11.00%
Withdrawal rate 25.00% 25.00%