Other financial liabilities - Summary Of Other Financial Liabilities (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2026	Mar. 31, 2025
Disclosure of Other financial liabilities [abstract]
Current liabilities	¥ 2,384,008	¥ 1,869,117
Non-current liabilities	1,157,413	435,594
Total	3,541,421	2,304,711
Financial liabilities measured at amortized cost, class [Member]
Disclosure of Other financial liabilities [abstract]
Deposits received	2,584,248	1,501,078
Other	599,218	483,751
Financial liabilities measured at fair value through profit or loss, class [Member]
Disclosure of Other financial liabilities [abstract]
Derivatives	357,955	319,881
Total	¥ 3,541,421	¥ 2,304,711

The amount of deposit liabilities from customers held by the entity.

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The amount of financial liabilities classified as derivative instruments. [Refer: Financial assets; Derivatives [member]]

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The amount of current financial liabilities that the entity does not separately disclose in the same statement or note. [Refer: Other financial liabilities; Current financial liabilities]

+ References

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The amount of financial liabilities that the entity does not separately disclose in the same statement or note. [Refer: Financial liabilities]

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The amount of non-current financial liabilities that the entity does not separately disclose in the same statement or note. [Refer: Other financial liabilities]

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Other Financial Liabilities At Amortized Cost.

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