Other Expenses - Summary of Other Expenses (Detail) - JPY (¥) ¥ in Millions |
12 Months Ended | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
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| Disclosure of associates [line items] | |||||||||||||||
| Cost of operating leases | ¥ 30,038 | ||||||||||||||
| Cost related to IT solution services and IT systems | 150,539 | 117,171 | 109,346 | ||||||||||||
| Provision for interest repayment | 110,115 | 22,061 | |||||||||||||
| Losses on disposal of property, plant and equipment, and other intangible assets | 8,017 | 14,828 | 9,360 | ||||||||||||
| Impairment losses of property, plant and equipment | 3,815 | 5,461 | 4,168 | ||||||||||||
| Impairment losses of intangible assets | 2,389 | 9,583 | 9,648 | ||||||||||||
| Losses on sale of investments in subsidiaries and associates | [1],[2] | 48,399 | 1,266 | 85,419 | |||||||||||
| Impairment losses of investments in associates and joint ventures | [3],[4],[5] | 13,907 | 138,104 | 93,046 | |||||||||||
| Losses on step acquisition of subsidiaries | 7,652 | 1,249 | |||||||||||||
| Others | 120,025 | 99,059 | 96,683 | ||||||||||||
| Total other expenses | [6] | ¥ 354,743 | ¥ 495,587 | ¥ 461,018 | |||||||||||
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