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v3.25.2

Short-Term and Long-Term Debt (Composition of Short-Term Debt and Weighted Average Contract Interest Rate on Short-Term Debt) (Detail) - JPY (¥) ¥ in Millions | Mar. 31, 2025 | Mar. 31, 2024
--- | --- | ---
Short-term Debt [Line Items] |  |
Short-term debt | ¥ 549,680 | ¥ 574,095
Weighted average rate | 3.40% | 3.10%
Secured borrowings on securities lending transactions [Member] |  |
Short-term Debt [Line Items] |  |
Short-term debt | ¥ 80,626 | ¥ 120,116
Weighted average rate | 2.30% | 1.10%
Unsecured bonds [Member] |  |
Short-term Debt [Line Items] |  |
Short-term debt |  | ¥ 1,122
Weighted average rate |  | 4.70%
Payables Under Securitized Loan Receivables And Investment In Securities [Member] |  |
Short-term Debt [Line Items] |  |
Short-term debt |  | ¥ 2,186
Weighted average rate |  | 4.00%
Japan | Bank Borrowings |  |
Short-term Debt [Line Items] |  |
Short-term debt | ¥ 181,835 | ¥ 139,450
Weighted average rate | 0.70% | 0.70%
Japan | Commercial Paper |  |
Short-term Debt [Line Items] |  |
Short-term debt |  | ¥ 7,998
Weighted average rate |  | 0.10%
Overseas | Bank Borrowings |  |
Short-term Debt [Line Items] |  |
Short-term debt | ¥ 279,631 | ¥ 297,372
Weighted average rate | 5.50% | 5.00%
Overseas | Commercial Paper |  |
Short-term Debt [Line Items] |  |
Short-term debt | ¥ 7,588 | ¥ 5,851
Weighted average rate | 2.90% | 2.70%

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