The amount of contractual undiscounted cash flows in relation to bank borrowings. [Refer: Borrowings]

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The adjustment to the basis (reference rate) used for calculation of the interest rate on borrowings. [Refer: Borrowings]

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The interest rate on borrowings. [Refer: Borrowings]

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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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The amount of loans received.

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Bonds and Loans - Schedule of Composition of Loans (Details) ¥ in Millions, $ in Millions	Mar. 31, 2025 JPY (¥)	Mar. 31, 2025 USD ($)	Mar. 31, 2024 JPY (¥)
Disclosure of detailed information about borrowings [line items]
JPY (millions) Carrying amount	¥ 324,633		¥ 750,873
2016 Syndicated Loans
Disclosure of detailed information about borrowings [line items]
Principal amount in contractual currency (millions)	100,000
JPY (millions) Carrying amount	¥ 0		100,000
Interest rate (%)	0.30%	0.30%
2017 Syndicated Loans
Disclosure of detailed information about borrowings [line items]
Principal amount in contractual currency (millions)	¥ 113,500
JPY (millions) Carrying amount	¥ 0		113,500
Interest rate (%)	0.35%	0.35%
2017 USD Syndicated Loans
Disclosure of detailed information about borrowings [line items]
Principal amount in contractual currency (millions) \| $		$ 1,500
JPY (millions) Carrying amount	¥ 0		¥ 227,018
2017 USD Syndicated Loans \| Secured Overnight Financing Rate (SOFR)
Disclosure of detailed information about borrowings [line items]
Spread on variable interest rate	0.42826%	0.42826%
2017 USD Syndicated Loans \| LIBOR
Disclosure of detailed information about borrowings [line items]
Spread on variable interest rate			0.50%
2023 Syndicated Loans
Disclosure of detailed information about borrowings [line items]
Principal amount in contractual currency (millions)	¥ 100,000
JPY (millions) Carrying amount	¥ 0		¥ 100,000
Interest rate (%)	0.679%	0.679%
Bilateral Loans
Disclosure of detailed information about borrowings [line items]
Principal amount in contractual currency (millions)	¥ 210,000
JPY (millions) Carrying amount	¥ 210,000		210,000
Bilateral Loans \| Minimum
Disclosure of detailed information about borrowings [line items]
Interest rate (%)	0.19%	0.19%
Bilateral Loans \| Maximum
Disclosure of detailed information about borrowings [line items]
Interest rate (%)	1.046%	1.046%
2025 USD Bilateral Loan
Disclosure of detailed information about borrowings [line items]
Principal amount in contractual currency (millions) \| $		$ 500
JPY (millions) Carrying amount	¥ 74,505		0
Interest rate (%)	4.71492%	4.71492%
2024 Syndicated Hybrid Loans (Subordinated Loans)
Disclosure of detailed information about borrowings [line items]
Principal amount in contractual currency (millions)	¥ 40,000
JPY (millions) Carrying amount	¥ 40,000		0
2024 Syndicated Hybrid Loans (Subordinated Loans) \| Tokyo Interbank Offered Rate (TIBOR) \| Minimum
Disclosure of detailed information about borrowings [line items]
Interest rate (%)	1.35%	1.35%
2024 Syndicated Hybrid Loans (Subordinated Loans) \| Tokyo Interbank Offered Rate (TIBOR) \| Maximum
Disclosure of detailed information about borrowings [line items]
Interest rate (%)	2.35%	2.35%
Other
Disclosure of detailed information about borrowings [line items]
JPY (millions) Carrying amount	¥ 128		¥ 355