v3.26.1
Income Taxes (Tax Effects of Temporary Differences and Carryforwards Giving Rise to Deferred Tax Assets and Liabilities) (Parenthetical) (Detail) - JPY (¥)
¥ in Millions
Mar. 31, 2026
Mar. 31, 2025
Income Taxes [Line Items]    
Deferred Tax Assets, Other [1] ¥ 188,081 ¥ 159,391
Related To Changes In Foreign Exchange Rate [Member]    
Income Taxes [Line Items]    
Deferred Tax Assets, Other ¥ 107,235 ¥ 96,778
[1] As of March 31, 2025 and 2026, other deferred tax assets includes amounts related to net investment hedges of ¥96,778 million and ¥107,235 million.