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 | ¥ 9,077,428 | ¥ 6,344,691 | ||
| Negotiable certificate of deposit and other | 3,582,193 | 2,637,713 | ||
| Total | ¥ 12,659,622 | ¥ 8,982,404 | ¥ 9,412,060 | ¥ 7,516,966 |
| X | ||||||||||
- Definition The amount of cash on hand and demand deposits. [Refer: Cash on hand] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition The amount of cash and cash equivalents that the entity does not separately disclose in the same statement or note. [Refer: Cash and cash equivalents] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|