Business Combination, Acquired Receivables, Principal Outstanding

No definition available.

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Definition

Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Net Loans Receivables

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Short-Term Debt

+ References

No definition available.

+ Details

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Balance Type:	credit
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- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
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-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481283/985-20-50-2

+ Details

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Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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-Topic 805
-SubTopic 20
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-Section 50
-Paragraph 5
-Subparagraph (a)
-Publisher FASB
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+ Details

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Balance Type:	na
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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

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-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479328/805-10-50-2

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the best estimate at the acquisition date of the contractual cash flows not expected to be collected, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables.

+ References

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-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)(3)
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+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Fair value of acquired receivable from business combination, excluding certain loans and debt securities acquired in transfer.

+ References

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-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

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-SubTopic 10
-Section 25
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-Publisher FASB
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+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

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+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
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-Paragraph 2
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of assets acquired at the acquisition date.

+ References

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-SubTopic 20
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of liabilities assumed at the acquisition date.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage of voting equity interests acquired in a business combination achieved in stages, including equity interests in the acquiree held by the acquirer immediately before the acquisition date and acquired at the acquisition date.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Amount of increase (decrease) to assets, excluding financial assets and goodwill, lacking physical substance with a finite life for purchase accounting adjustments.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

+ References

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-Publisher FASB
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+ Details

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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

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-Topic 805
-SubTopic 30
-Name Accounting Standards Codification
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+ Details

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- Details

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Namespace Prefix:
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- Details

Name:	dei_LegalEntityAxis=mufg_PTAdiraDinamikaMultiFinanceTbkMember
Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Period Type:

- Details

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Business Developments (Acquisition of HC Consumer Finance Philippines, Inc & PT Home Credit Indonesia) (Details) - JPY (¥) ¥ in Millions			1 Months Ended	6 Months Ended	10 Months Ended	12 Months Ended
	Oct. 02, 2023	Jun. 01, 2023	Mar. 31, 2024	Mar. 31, 2024	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Business Developments [Line Items]
Goodwill			¥ 493,758	¥ 493,758	¥ 493,758	¥ 558,164	¥ 493,758	¥ 296,772
Customer relationships
Business Developments [Line Items]
Weighted average amortization period, in years						16 years	13 years
PT Adira Dinamika Multi Finance Tbk \| HC Indonesia
Business Developments [Line Items]
Ownership percentage by NCI owners			4.90%	4.90%	4.90%		4.90%
HC Philippines
Business Developments [Line Items]
Percentage of voting interests acquired		100.00%
Payments to acquire businesses		¥ 69,841
Assets acquired		137,577
Net loans receivables acquired		108,359
Liabilities acquired		96,152
Long-term debt liabilities acquired		43,891
Goodwill		28,196
Intangible assets		¥ 9,373
Weighted average amortization period, in years		5 years 8 months 12 days
Revenues					¥ 58,394
Earnings or loss of acquiree since acquisition date					¥ 4,129
Acquired loan at fair value at acquisition date		¥ 104,391
Acquired loan unpaid principal balance		109,032
Contractual loans not expected to be collected		4,100
Finite-lived intangible assets, purchase accounting adjustments							¥ 1,669	1,560
HC Philippines \| Customer relationships
Business Developments [Line Items]
Intangible assets		¥ 6,137
Weighted average amortization period, in years		7 years 6 months
HC Philippines \| Krungsri
Business Developments [Line Items]
Percentage of voting interests acquired		75.00%
HC Philippines \| MUFG Union Bank
Business Developments [Line Items]
Percentage of voting interests acquired		25.00%
HC Indonesia
Business Developments [Line Items]
Assets acquired	¥ 44,178
Net loans receivables acquired	24,949
Liabilities acquired	30,494
Goodwill	18,034
Intangible assets	¥ 3,964
Weighted average amortization period, in years	6 years 10 months 24 days
Revenues				¥ 14,569
Earnings or loss of acquiree since acquisition date				¥ 327
Acquired loan at fair value at acquisition date	¥ 25,768
Acquired loan unpaid principal balance	27,389
Contractual loans not expected to be collected	1,505
Short term borrowings acquired	¥ 22,299
Finite-lived intangible assets, purchase accounting adjustments							¥ 577	¥ 539
HC Indonesia \| Customer relationships
Business Developments [Line Items]
Intangible assets		¥ 3,582
Weighted average amortization period, in years		7 years 1 month 6 days
HC Indonesia \| Krungsri and PT Adira Dinamika Multi Finance Tbk
Business Developments [Line Items]
Percentage of voting interests acquired	84.80%
Payments to acquire businesses	¥ 31,812
HC Indonesia \| Krungsri
Business Developments [Line Items]
Percentage of voting interests acquired	75.00%
Consideration transferred			¥ 4,896
Equity interest in acquiree, including subsequent acquisition,			80.00%	80.00%	80.00%		80.00%
HC Indonesia \| PT Adira Dinamika Multi Finance Tbk
Business Developments [Line Items]
Percentage of voting interests acquired	9.80%
HC Consumer Finance Philippines and PT Home Credit Indonesia
Business Developments [Line Items]
Acquisition related costs							¥ 1,044