v3.26.1
Revenue - Summary of Contract Costs (Detail) - JPY (¥)
¥ in Millions
Mar. 31, 2026
Mar. 31, 2025
Costs to obtain contracts with customers [member]    
Disclosure of assets recognised from costs to obtain or fulfil contracts with customers [line items]    
Assets recognised from costs to obtain or fulfil contracts with customers ¥ 27,338 ¥ 12,901