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Redeemable Noncontrolling Interests (Changes in Redeemable Noncontrolling Interests) (Detail) - JPY (¥) ¥ in Millions | 6 Months Ended
--- | ---
Sep. 30, 2025 | Sep. 30, 2024
Statement of Stockholders' Equity [Abstract] |  |
Beginning Balance | ¥ 3,432 | ¥ 2,645
Contribution to subsidiary | 44,847 | 0
Transaction with noncontrolling interests | 515 | 582
Adjustment of redeemable noncontrolling interests to redemption value | 0 | 0
Comprehensive income (losses) |  |
Net Income | 73 | 156
Other comprehensive income (losses) |  |
Net change of unrealized gains (losses) on investment in securities | (6) | (12)
Net change of foreign currency translation adjustments | 402 | (157)
Total other comprehensive income (losses) | 396 | (169)
Comprehensive income (losses) | 469 | (13)
Dividends | (1,077) | (708)
Ending Balance | ¥ 48,186 | ¥ 2,506

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- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to redeemable noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners. + References No definition available. + Details
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- Definition Redeemable noncontrolling interests dividends. + References No definition available. + Details
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- Definition Change in noncontrolling interest during the period as a result of a change in the redemption value of redeemable noncontrolling interest. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 + Details
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- Definition Amount, after tax and reclassification adjustment, of gain (loss) in value of unsold investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), attributable to noncontrolling interest. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 810 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 19 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481231/810-10-45-19 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 20 -SubTopic 10 -Topic 810 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481231/810-10-45-20 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Subparagraph (c)(3) -SubTopic 10 -Topic 810 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481203/810-10-50-1A + Details
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- Definition The aggregate fair value as of the reporting date of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 480 -SubTopic 10 -Name Accounting Standards Codification -Section S50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479857/480-10-S50-3 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 480 -SubTopic 10 -Name Accounting Standards Codification -Section S45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479887/480-10-S45-3 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 480 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3A -Subparagraph (24) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480244/480-10-S99-3A + Details
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