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Installment Loans (Contractual Maturities of Installment Loans Except Purchased Loans) (Detail) ¥ in Millions	Mar. 31, 2024 JPY (¥)
Debt Disclosure [Abstract]
2025	¥ 714,395
2026	403,303
2027	342,527
2028	243,226
2029	207,661
Thereafter	2,027,729
Total	¥ 3,938,841

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- Definition

Contractual Maturities of Installment Loans

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Contractual Maturities of Installment Loans Current

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- Definition

Contractual Maturities of Installment Loans in Five Years

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- Definition

Contractual Maturities of Installment Loans in Four Years

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Contractual Maturities of Installment Loans in Three Years

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Contractual Maturities of Installment Loans in Two Years

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Contractual Maturities of Installment Loans Thereafter

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