v3.26.3
Revenues from Contracts with Customers - Balances from Contracts with Customers in Fee Business (Detail) - JPY (¥)
¥ in Millions
Sep. 30, 2026
Mar. 31, 2026
Contract with Customer, Asset and Liability [Abstract]    
Trade Notes, Accounts and Other Receivable ¥ 218,497 ¥ 246,881
Contract assets (Included in Other Assets) 18,348 15,815
Contract liabilities (Included in Other Liabilities) ¥ 42,435 ¥ 46,164