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Installment Loans (Contractual Maturities of Installment Loans Except Purchased Loans) (Detail) ¥ in Millions	Mar. 31, 2023 JPY (¥)
Debt Disclosure [Abstract]
2024	¥ 522,101
2025	429,107
2026	411,787
2027	270,538
2028	224,434
Thereafter	2,007,380
Total	¥ 3,865,347

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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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- Definition

Contractual Maturities of Installment Loans in Three Years

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- Definition

Contractual Maturities of Installment Loans in Two Years

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Contractual Maturities of Installment Loans Thereafter

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