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Income Taxes (Expiry Schedule of Net Operating Loss Carryforwards) (Detail) ¥ in Millions	Mar. 31, 2024 JPY (¥)
Income Tax Disclosure [Abstract]
2025	¥ 17,610
2026	23,722
2027	10,222
2028	4,238
2029	31,118
Thereafter	280,775
Indefinite period	72,726
Total	¥ 440,411

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- Definition

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- Definition

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- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-3

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