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v3.23.2

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, 2023 | Mar. 31, 2022
Debt Instrument [Line Items] |  |
Long-term Debt | ¥ 5,209,723 | ¥ 4,427,046
Weighted average rate | 2.40% | 1.30%
Fixed rate, Banks |  |
Debt Instrument [Line Items] |  |
Long-term Debt | ¥ 666,764 | ¥ 545,320
Weighted average rate | 1.60% | 1.30%
Minimum maturity date | 2025 | 2023
Maximum maturity date | 2083 | 2082
Floating rate, Banks |  |
Debt Instrument [Line Items] |  |
Long-term Debt | ¥ 2,448,488 | ¥ 2,076,802
Weighted average rate | 2.80% | 1.10%
Minimum maturity date | 2024 | 2023
Maximum maturity date | 2077 | 2077
Fixed rate, Insurance companies and others |  |
Debt Instrument [Line Items] |  |
Long-term Debt | ¥ 323,653 | ¥ 322,411
Weighted average rate | 0.80% | 0.80%
Minimum maturity date | 2025 | 2023
Maximum maturity date | 2083 | 2082
Floating rate, Insurance companies and others |  |
Debt Instrument [Line Items] |  |
Long-term Debt | ¥ 295,625 | ¥ 296,230
Weighted average rate | 2.00% | 0.80%
Minimum maturity date | 2026 | 2023
Maximum maturity date | 2077 | 2077
Unsecured bonds |  |
Debt Instrument [Line Items] |  |
Long-term Debt | ¥ 1,175,087 | ¥ 997,654
Weighted average rate | 2.00% | 1.60%
Minimum maturity date | 2024 | 2024
Maximum maturity date | 2081 | 2081
Unsecured notes under medium-term note program |  |
Debt Instrument [Line Items] |  |
Long-term Debt | ¥ 149,535 | ¥ 32,279
Weighted average rate | 3.70% | 4.10%
Minimum maturity date | 2025 | 2023
Maximum maturity date | 2029 | 2027
Payables under securitized loan receivables and investment in securities |  |
Debt Instrument [Line Items] |  |
Long-term Debt | ¥ 150,571 | ¥ 156,350
Weighted average rate | 5.50% | 3.10%
Minimum maturity date | 2024 | 2033
Maximum maturity date | 2051 | 2043

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