v3.25.2
Goodwill - Schedule of Reconciliation of Changes in Goodwill (Details) - Goodwill - JPY (¥)
¥ in Millions
12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Reconciliation of changes in intangible assets and goodwill [abstract]    
As of beginning of the year ¥ 5,410,067 ¥ 4,790,723
Reclassification to assets held for sale (Note 19) (6,999) (6,626)
Foreign currency translation differences and others (78,637) 625,970
As of end of the year ¥ 5,324,430 ¥ 5,410,067