Borrowings - Effective weighted-average interest rates of borrowings (Detail) |
Mar. 31, 2026 |
Mar. 31, 2025 |
|---|---|---|
| Schedule of Borrowings [Line Items] | ||
| Short-term borrowings | 2.75% | 2.77% |
| Long-term borrowings | 3.01% | 3.19% |
| Fixed-rate obligations [Member] | ||
| Schedule of Borrowings [Line Items] | ||
| Long-term borrowings | 3.28% | 3.77% |
| Floating-rate obligations [Member] | ||
| Schedule of Borrowings [Line Items] | ||
| Long-term borrowings | 2.78% | 2.74% |
| Index / Equity-linked obligations [Member] | ||
| Schedule of Borrowings [Line Items] | ||
| Long-term borrowings | 2.52% | 1.99% |