Other Finance Income and Costs - Summary of Other Finance Income and Costs (Detail) - JPY (¥) ¥ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
Mar. 31, 2023 |
|
| Other finance income | |||
| Other | ¥ 71,637 | ¥ 165,370 | ¥ 35,939 |
| Total | 556,700 | 747,236 | 379,350 |
| Other finance costs | |||
| Financial liabilities measured at amortized cost | (84,106) | (64,733) | (47,356) |
| Other | (106,605) | (38,975) | (77,757) |
| Total | (190,711) | (103,709) | (125,113) |
| Interest income [Member] | |||
| Other finance income | |||
| Financial assets measured at amortized cost | 256,034 | 289,035 | 101,737 |
| Financial assets measured at fair value through other comprehensive income | 108,594 | 165,653 | 132,365 |
| Dividend income [Member] | |||
| Other finance income | |||
| Financial assets measured at fair value through other comprehensive income | ¥ 120,435 | ¥ 127,178 | ¥ 109,308 |