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Credit Quality of Financial Assets and the Allowance for Credit Losses - Summary of Financing Receivables Payment Default and Modifications of Past Due (Detail) - Consumer borrowers ¥ in Millions | 6 Months Ended
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Sep. 30, 2024 JPY (¥)
Interest rate reduction |
Financing Receivable, Modified, Subsequent Default [Line Items] |
Financing Receivable, Modified | ¥ 0
Interest rate reduction | Other |
Financing Receivable, Modified, Subsequent Default [Line Items] |
Financing Receivable, Modified | 0
Term extension |
Financing Receivable, Modified, Subsequent Default [Line Items] |
Financing Receivable, Modified | 0
Term extension | Other |
Financing Receivable, Modified, Subsequent Default [Line Items] |
Financing Receivable, Modified | 0
Principal forgiveness |
Financing Receivable, Modified, Subsequent Default [Line Items] |
Financing Receivable, Modified | 0
Principal forgiveness | Other |
Financing Receivable, Modified, Subsequent Default [Line Items] |
Financing Receivable, Modified | 0
Combination - interest rate reduction and term extension |
Financing Receivable, Modified, Subsequent Default [Line Items] |
Financing Receivable, Modified | 20
Combination - interest rate reduction and term extension | Other |
Financing Receivable, Modified, Subsequent Default [Line Items] |
Financing Receivable, Modified | 20
Combination - interest rate reduction and principal forgiveness |
Financing Receivable, Modified, Subsequent Default [Line Items] |
Financing Receivable, Modified | 0
Combination - interest rate reduction and principal forgiveness | Other |
Financing Receivable, Modified, Subsequent Default [Line Items] |
Financing Receivable, Modified | 0
Combination - term extension and principal forgiveness |
Financing Receivable, Modified, Subsequent Default [Line Items] |
Financing Receivable, Modified | 0
Combination - term extension and principal forgiveness | Other |
Financing Receivable, Modified, Subsequent Default [Line Items] |
Financing Receivable, Modified | ¥ 0

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