v3.24.1
Retirement Benefit Plans - Summary of Key Assumptions Used for the Actuarial Valuations (Detail)
Dec. 31, 2023
Dec. 31, 2022
Bottom of range [member]    
Disclosure of defined benefit plans [line items]    
Discount rates 0.16% 0.05%
Expected rates of salary increase 1.00% 1.00%
Top of range [member]    
Disclosure of defined benefit plans [line items]    
Discount rates 4.91% 5.63%
Expected rates of salary increase 4.06% 3.96%