v3.26.1
Income Tax Expense - Detail of Income Tax Expense (Parenthetical) (Detail) - JPY (¥)
¥ in Millions
12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Disclosure of Income Taxes [Line Items]      
Current income tax expense (benefit) [1] ¥ 512,585 ¥ 448,761 ¥ 368,050
IFRS 9 [member]      
Disclosure of Income Taxes [Line Items]      
Current income tax expense (benefit) ¥ 144,680 ¥ 135,771 ¥ 71,524
[1] As a result of the adoption of IFRS 9, the current income tax expenses of ¥144,680 million, ¥135,771 million and ¥71,524 million were recognized directly in equity for the fiscal years ended March 31, 2026, 2025 and 2024, respectively.