Selling, General and Administrative Expenses (Summary of Selling, General and Administrative Expenses) (Detail) - JPY (¥) ¥ in Millions	3 Months Ended	9 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Selling, General and Administrative Expense [Abstract]
Personnel expenses	¥ 84,628	¥ 76,296	¥ 238,728	¥ 220,758
Selling expenses	22,900	20,616	64,151	52,825
Administrative expenses	34,592	33,400	102,845	98,174
Depreciation of office facilities	2,213	2,328	6,563	6,767
Total	¥ 144,333	¥ 132,640	¥ 412,287	¥ 378,524

Depreciation of office facilities.

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- Definition

Personnel expenses.

+ References

No definition available.

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- Definition

The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.4)
-URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227

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- Definition

Expenses recognized in the period that are directly related to the selling and distribution of products or services.

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- Definition

The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

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- References

No definition available.

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