Financial Risk Management - Foreign Currency Exchange Rate Risk Sensitivity Analysis (Detail) - JPY (¥) ¥ in Millions |
Mar. 31, 2026 |
Mar. 31, 2025 |
|---|---|---|
| Percentage of appreciation of the Japanese yen against the U.S. dollar [member] | ||
| Disclosure of nature and extent of risks arising from financial instruments [line items] | ||
| Impact on profit before income taxes | ¥ (2,046) | ¥ (2,162) |