v3.26.1
Cash and Cash Equivalents - Summary of Cash and Cash Equivalents (Detail) - JPY (¥)
¥ in Millions
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Cash and cash equivalents [abstract]        
Cash and deposits ¥ 3,852,220 ¥ 3,261,111    
Cash equivalents 1,214,608 1,267,684    
Cash and cash equivalents in the consolidated statements of financial position 5,066,828 4,528,795    
Cash and cash equivalents included in assets held for sale 51,649    
Cash and cash equivalents in the consolidated statements of cash flows ¥ 5,118,477 ¥ 4,528,795 ¥ 4,954,565 ¥ 3,803,014