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v3.25.2

Short-Term and Long-Term Debt (Composition of Long-Term Debt, Weighted Average Contract Interest Rate on Long-Term Debt and Repayment Due Dates) (Detail) - JPY (¥) ¥ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Debt Instrument [Line Items] |  |
Long-term Debt | ¥ 5,733,118 | ¥ 5,626,376
Weighted average rate | 2.70% | 2.70%
Fixed rate, Banks |  |
Debt Instrument [Line Items] |  |
Long-term Debt | ¥ 799,933 | ¥ 777,366
Weighted average rate | 1.70% | 1.60%
Minimum maturity date | 2026 | 2025
Maximum maturity date | 2083 | 2083
Floating rate, Banks |  |
Debt Instrument [Line Items] |  |
Long-term Debt | ¥ 2,614,936 | ¥ 2,587,324
Weighted average rate | 3.30% | 3.40%
Minimum maturity date | 2026 | 2025
Maximum maturity date | 2077 | 2077
Fixed rate, Insurance companies and others |  |
Debt Instrument [Line Items] |  |
Long-term Debt | ¥ 353,890 | ¥ 352,035
Weighted average rate | 0.90% | 0.60%
Minimum maturity date | 2026 | 2029
Maximum maturity date | 2083 | 2083
Floating rate, Insurance companies and others |  |
Debt Instrument [Line Items] |  |
Long-term Debt | ¥ 262,346 | ¥ 271,029
Weighted average rate | 2.20% | 2.40%
Minimum maturity date | 2026 | 2029
Maximum maturity date | 2077 | 2077
Unsecured bonds |  |
Debt Instrument [Line Items] |  |
Long-term Debt | ¥ 1,251,120 | ¥ 1,208,672
Weighted average rate | 2.10% | 2.00%
Minimum maturity date | 2026 | 2026
Maximum maturity date | 2081 | 2081
Unsecured notes under medium-term note program |  |
Debt Instrument [Line Items] |  |
Long-term Debt | ¥ 387,316 | ¥ 272,064
Weighted average rate | 3.80% | 3.80%
Minimum maturity date | 2026 | 2028
Maximum maturity date | 2032 | 2030
Payables under securitized lease receivables |  |
Debt Instrument [Line Items] |  |
Long-term Debt | ¥ 13,565 |
Weighted average rate | 0.10% |
Minimum maturity date | 2026 |
Maximum maturity date | 2026 |
Payables under securitized loan receivables and investment in securities |  |
Debt Instrument [Line Items] |  |
Long-term Debt | ¥ 50,012 | ¥ 157,886
Weighted average rate | 5.00% | 6.00%
Minimum maturity date | 2026 | 2025
Maximum maturity date | 2044 | 2044

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