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- Definition

Business Management Service Fee, Amounts Payable, Related Party Transactions

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- Definition

Cost Of Sales, Related Party Transactions

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- Definition

Derivative Financial Assets, Related Party Transactions

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Gain (Loss) On Derivative Financial Instruments, Related Party Transactions

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- Definition

Interest Expense, Related Party Transactions

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- Definition

Provision Of Sales Service, Amounts Payables, Related Party Transactions

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- Definition

Provision Of Sales Service, Related Party Transactions

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- Definition

The interest rate on borrowings. [Refer: Borrowings]

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- Definition

The cash outflow for repayments of advances and loans from related parties. [Refer: Total for all related parties [member]]

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

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- Definition

The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

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Related parties - Related Party Transactions (Details) - JPY (¥)	1 Months Ended	12 Months Ended
	Jun. 30, 2024	Mar. 31, 2025	Mar. 31, 2024	Apr. 01, 2023
Disclosure of transactions between related parties [line items]
Transaction revenue		¥ 6,397,000,000	¥ 848,000,000	¥ 5,000,000
Percentage of entity's revenue		5.00%
Repayments of loans from related party		¥ 7,887,000,000	0	3,000,000,000
Principal amount		8,900,000,000	6,200,000,000
Financial assets at fair value through other comprehensive income, category \| Derivatives
Disclosure of transactions between related parties [line items]
Principal amount			43,000,000
Parent company
Disclosure of transactions between related parties [line items]
Business management service fee		0	125,000,000
Business management service fee		397,000,000	458,000,000	363,000,000
Subsidiaries of parent company
Disclosure of transactions between related parties [line items]
Borrowing		751,000,000	0
Transaction revenue		0	0	5,000,000
Interest expense		21,000,000	0	0
Subsidiaries of parent company \| Line Of Credit 6,000 Million
Disclosure of transactions between related parties [line items]
Borrowing		0	0
Line or credit, aggregate commitments		6,000,000,000	6,000,000,000
Repayments of loans from related party	¥ 6,000,000,000
Subsidiaries of parent company \| Line Of Credit 2,400 Million
Disclosure of transactions between related parties [line items]
Borrowing		751,000,000
Line or credit, aggregate commitments		¥ 2,400,000,000
Borrowings, interest rate		5.69%
Associates of parent company
Disclosure of transactions between related parties [line items]
Provision of sales service		¥ 5,000,000	4,000,000
Derivative transaction		0	2,000,000
Transaction revenue		6,396,000,000	847,000,000	0
Cost of sales		6,377,000,000	844,000,000	0
Provision of sales service		42,000,000	26,000,000	23,000,000
Derivative gains		9,000,000	55,000,000	0
Key management
Disclosure of transactions between related parties [line items]
Transaction revenue		¥ 1,000,000	¥ 0	¥ 0