v3.26.1
Intangible Assets - Changes in Goodwill by Business Segment (Parenthetical) (Detail)
¥ in Millions
12 Months Ended
Mar. 31, 2026
JPY (¥)
Disclosure of reconciliation of changes in goodwill [line items]  
Acquisitions ¥ 43,898
Global Business Unit [member] | CCCMK Holdings Co., Ltd. [Member]  
Disclosure of reconciliation of changes in goodwill [line items]  
Acquisitions ¥ 43,898