Mitsubishi UFJ Financial (MUFG) 20-F 24 Jul 23 2023 FY Annual report (foreign) Financial data

Cover Page

Cover Page	12 Months Ended
	Mar. 31, 2023 shares
Document Information [Line Items]
Document Type	20-F
Document Registration Statement	false
Document Annual Report	true
Current Fiscal Year End Date	--03-31
Document Period End Date	Mar. 31, 2023
Document Fiscal Year Focus	2023
Document Transition Report	false
Document Shell Company Report	false
Entity File Number	000-54189
Entity Registrant Name	MITSUBISHI UFJ FINANCIAL GROUP, INC.
Entity Address, Address Line One	7-1, Marunouchi 2-chome
Entity Address, Address Line Two	Chiyoda-ku
Entity Address, City or Town	Tokyo
Entity Address, Postal Zip Code	100-8330
Entity Incorporation, State or Country Code	M0
Entity Address, Country	JP
Entity Common Stock, Shares Outstanding	12,687,710,920
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Accounting Standard	U.S. GAAP
Entity Shell Company	false
Amendment Flag	false
Document Fiscal Period Focus	FY
Entity Central Index Key	0000067088
Business Contact
Document Information [Line Items]
Entity Address, Address Line One	4-5, Marunouchi 1-chome
Entity Address, Address Line Two	Chiyoda-ku
Entity Address, City or Town	Tokyo
Entity Address, Postal Zip Code	100-8212
Contact Personnel Name	Masahisa Takahashi
City Area Code	81-3
Local Phone Number	3240-8111
Entity Address, Country	JP
Common stock
Document Information [Line Items]
Security 12(b) Title	Common stock, without par value
Security Exchange Name	NYSE
No Trading Symbol Flag	true
American Depositary Shares
Document Information [Line Items]
Security 12(b) Title	American depositary shares, each of which represents one share of common stock
Trading Symbol	MUFG
Security Exchange Name	NYSE

Audit Information

Audit Information	12 Months Ended
	Mar. 31, 2023
Audit information [Abstract]
Auditor name	Deloitte Touche Tohmatsu LLC
Auditor location	Tokyo, Japan
Auditor firm ID	1044

Consolidated Balance Sheets

Consolidated Balance Sheets - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
ASSETS
Cash and due from banks (Note 9)	¥ 60,050,640	¥ 50,972,491
Interest-earning deposits in other banks (Note 9)	53,989,863	58,848,056
Cash, due from banks and interest-earning deposits in other banks	114,040,503	109,820,547
Call loans and funds sold	1,802,463	1,315,761
Receivables under resale agreements (Note 15)	14,058,963	12,503,396
Receivables under securities borrowing transactions (Note 15)	4,555,748	4,496,376
Trading account assets (including assets pledged that secured parties are permitted to sell or repledge of ¥8,857,073 and ¥11,407,569 in 2022 and 2023) (including ¥17,135,481 and ¥19,691,210 measured at fair value under the fair value option in 2022 and 2023) (Notes 9, 15, 23 and 31)	46,168,461	42,668,336
Investment securities (Notes 3, 9 and 31):
Available-for-sale debt securities (including assets pledged that secured parties are permitted to sell or repledge of ¥3,151,799 and ¥6,277,947 in 2022 and 2023)	35,740,802	45,798,442
Held-to-maturity debt securities (including assets pledged that secured parties are permitted to sell or repledge of ¥148,763 and ¥8,264,085 in 2022 and 2023) (fair value of ¥4,606,305 and ¥21,386,156 in 2022 and 2023)	21,520,081	4,595,109
Equity securities (including assets pledged that secured parties are permitted to sell or repledge of ¥741 and ¥724 in 2022 and 2023) (including ¥5,111,630 and ¥4,619,120 in 2022 and 2023 measured at fair value)	5,001,048	5,422,200
Total investment securities	62,261,931	55,815,751
Loans, net of unearned income, unamortized premiums and deferred loan fees (including assets pledged that secured parties are permitted to sell or repledge of ¥167,152 and ¥144,288 in 2022 and 2023) (Notes 4 and 9)	119,955,460	113,149,393
Allowance for credit losses (Note 4)	(1,272,898)	(1,470,701)
Net loans	118,682,562	111,678,692
Premises and equipment—net (Notes 5 and 7)	860,578	815,829
Customers’ acceptance liability	378,525	371,034
Intangible assets—net (Notes 2 and 6)	1,174,223	1,148,601
Goodwill (Notes 2 and 6)	296,772	303,611
#REF!	17,455,004	26,712,084
Total assets	381,735,733	367,650,018
Deposits (Notes 9 and 10):
Domestic offices, non-interest-bearing	35,186,603	33,584,539
Domestic offices, interest-bearing	147,716,037	144,412,415
Overseas offices, non-interest-bearing	2,617,346	2,911,513
Overseas offices, interest-bearing	49,756,795	43,681,476
Total deposits	235,276,781	224,589,943
Call money, funds purchased	3,437,614	2,416,313
Payables under repurchase agreements (Notes 9, 15 and 16)	40,132,459	27,725,612
Payables under securities lending transactions (Notes 9, 15 and 16)	1,137,693	1,021,887
Due to trust account and other short-term borrowings (including ¥123,028 and ¥49,555 measured at fair value under the fair value option in 2022 and 2023) (Notes 9, 12 and 31)	14,309,258	22,850,600
Trading account liabilities (Notes 15, 23 and 31)	14,178,275	11,019,046
Bank acceptances outstanding	378,525	371,034
Long-term debt (including ¥483,051 and ¥431,338 measured at fair value under the fair value option in 2022 and 2023) (Notes 7, 9, 12 and 31)	39,071,755	34,696,599
#REF!	17,347,206	26,662,462
Other short-term borrowings	8,438,014	16,543,137
Total liabilities	365,269,566	351,353,496
Commitments and contingent liabilities (Notes 24 and 26)
Mitsubishi UFJ Financial Group shareholders’ equity:
Capital stock (Notes 17 and 18)—common stock authorized, 33,000,000,000 shares; common stock issued, 13,281,995,120 shares and 12,687,710,920 shares at March 31, 2022 and 2023, with no stated value	2,090,270	2,090,270
Capital surplus (Note 18)	4,902,155	5,327,772
Retained earnings (Notes 19 and 33):
Appropriated for legal reserve	239,571	239,571
Unappropriated retained earnings	8,169,710	8,172,646
Accumulated other comprehensive income, net of taxes (Note 20)	844,192	227,033
Treasury stock, at cost—668,286,238 common shares and 665,392,775 common shares at March 31, 2022 and 2023	(482,552)	(452,224)
Total Mitsubishi UFJ Financial Group shareholders’ equity	15,763,346	15,605,068
Noncontrolling interests	702,821	691,454
Total equity	16,466,167	16,296,522
Total liabilities and equity	381,735,733	367,650,018
Consolidated VIEs
ASSETS
Cash and due from banks (Note 9)	8,243	6,728
Interest-earning deposits in other banks (Note 9)	52,031	27,382
Trading account assets (including assets pledged that secured parties are permitted to sell or repledge of ¥8,857,073 and ¥11,407,569 in 2022 and 2023) (including ¥17,135,481 and ¥19,691,210 measured at fair value under the fair value option in 2022 and 2023) (Notes 9, 15, 23 and 31)	1,367,928	1,252,308
Investment securities (Notes 3, 9 and 31):
Total investment securities	2,076,737	1,824,892
Loans	16,598,585	15,651,462
All other assets	998,096	195,795
Total assets	21,101,620	18,958,567
Deposits (Notes 9 and 10):
Total deposits	0	0
Long-term debt (including ¥483,051 and ¥431,338 measured at fair value under the fair value option in 2022 and 2023) (Notes 7, 9, 12 and 31)	406,429	449,231
Other short-term borrowings	45,432	39,582
All other liabilities	163,075	95,219
Total liabilities	¥ 614,936	¥ 584,032

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
Trading account assets pledged that secured parties are permitted to sell or repledge	¥ 11,407,569	¥ 8,857,073
Trading account assets measured at fair value under fair value option	19,691,210	17,135,481
Available-for-sale debt securities pledged that secured parties are permitted to sell or repledge	6,277,947	3,151,799
Held-to-maturity debt securities pledged that secured parties are permitted to sell or repledge	8,264,085	148,763
Held-to-maturity debt securities, fair value	21,386,156	4,606,305
Equity securities pledged that secured parties are permitted to sell or repledge	724	741
Equity securities measured at fair value	4,619,120	5,111,630
Financing receivable, before allowance for credit loss	120,356,472	113,471,623
Allowance for credit losses	15,918	13,998
Due to trust account and other short-term borrowings measured at fair value under fair value option	49,555	123,028
Long-term debt measured at fair value under fair value option	¥ 431,338	¥ 483,051
Common stock, authorized (in shares)	33,000,000,000	33,000,000,000
Common stock, issued (in shares)	12,687,710,920	13,281,995,120
Common stock, stated value (JPY per share)	¥ 0	¥ 0
Treasury stock, shares (in shares)	665,392,775	668,286,238
Disposal group, disposed of by sale, not discontinued operations
Assets held for sale relating to transferred business of MUFG Union Bank (Note 2)	¥ 0	¥ 11,621,567
Disposal group, disposed of by sale, not discontinued operations | MUFG Union Bank
Assets held for sale relating to transferred business of MUFG Union Bank (Note 2)		11,621,567
Disposal group, including discontinued operation, liabilities		11,157,660
Asset pledged as collateral without right
Financing receivable, before allowance for credit loss	¥ 144,288	¥ 167,152

Consolidated Statements of Inco

Consolidated Statements of Income - JPY (¥) shares in Thousands	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Interest income:
Loans, including fees (Note 4)	¥ 2,973,667,000,000	¥ 1,731,962,000,000	¥ 1,940,754,000,000
Deposits in other banks	359,054,000,000	57,392,000,000	56,555,000,000
Investment securities:
Interest	401,935,000,000	180,959,000,000	178,873,000,000
Dividends	146,053,000,000	133,537,000,000	119,387,000,000
Trading account assets	551,372,000,000	400,185,000,000	373,200,000,000
Call loans and funds sold	19,854,000,000	4,418,000,000	4,721,000,000
Receivables under resale agreements and securities borrowing transactions	159,475,000,000	22,485,000,000	78,506,000,000
Total	4,611,410,000,000	2,530,938,000,000	2,751,996,000,000
Interest expense:
Deposits	1,170,155,000,000	216,591,000,000	329,392,000,000
Call money and funds purchased	3,783,000,000	685,000,000	1,105,000,000
Payables under repurchase agreements and securities lending transactions	479,170,000,000	31,577,000,000	91,508,000,000
Due to trust account, other short-term borrowings and trading account liabilities	188,798,000,000	51,978,000,000	72,403,000,000
Long-term debt	380,090,000,000	259,526,000,000	253,494,000,000
Total	2,221,996,000,000	560,357,000,000	747,902,000,000
Net interest income	2,389,414,000,000	1,970,581,000,000	2,004,094,000,000
Provision for credit losses (Note 4)	8,148,000,000	277,995,000,000	484,210,000,000
Net interest income after provision for credit losses	2,381,266,000,000	1,692,586,000,000	1,519,884,000,000
Non-interest income:
Fees and commissions income (Note 27)	1,701,637,000,000	1,658,863,000,000	1,527,283,000,000
Foreign exchange gains—net (Note 28)	25,232,000,000	106,868,000,000	99,337,000,000
Trading account losses—net (Notes 28 and 31)	(792,098,000,000)	(824,420,000,000)	(410,368,000,000)
Investment securities gains (losses)—net (Note 3)	(254,178,000,000)	(119,026,000,000)	1,458,264,000,000
Equity in earnings of equity method investees—net (Note 14)	398,086,000,000	436,583,000,000	355,730,000,000
Gains (losses) on sales of loans including valuation adjustment for loans held for sale (Note 4)	(34,039,000,000)	16,600,000,000	17,926,000,000
Gain on sale of MUFG Union Bank (Note 2)	557,954,000,000	0	0
Other non-interest income	92,828,000,000	119,321,000,000	109,615,000,000
Total	1,695,422,000,000	1,394,789,000,000	3,157,787,000,000
Non-interest expense:
Salaries and employee benefits (Note 13)	1,343,631,000,000	1,277,408,000,000	1,253,461,000,000
Occupancy expenses—net (Notes 5 and 26)	162,204,000,000	165,323,000,000	178,107,000,000
Fees and commissions expenses	340,141,000,000	310,861,000,000	318,797,000,000
Outsourcing expenses, including data processing	351,323,000,000	317,995,000,000	298,777,000,000
Depreciation of premises and equipment (Note 5)	73,793,000,000	82,652,000,000	87,305,000,000
Amortization of intangible assets (Note 6)	274,380,000,000	261,026,000,000	250,106,000,000
Impairment of intangible assets (Note 6)	5,151,000,000	33,301,000,000	21,680,000,000
Insurance premiums, including deposit insurance	74,334,000,000	95,551,000,000	90,529,000,000
Communications	58,375,000,000	57,369,000,000	59,798,000,000
Taxes and public charges	100,291,000,000	99,659,000,000	97,783,000,000
Impairment of goodwill (Note 6)	33,553,000,000	0	147,564,000,000
Provision for (reversal of) off-balance sheet credit instruments	20,747,000,000	46,339,000,000	(56,749,000,000)
Reversal of impairment (impairment) of assets held for sale	(134,141,000,000)	134,141,000,000	0
Loss on valuation adjustment for loans held for sale held by MUFG Union Bank (Note 2)	282,540,000,000	3,165,000,000	0
Other non-interest expenses (Notes 5 and 26)	433,632,000,000	261,312,000,000	322,171,000,000
Total	3,419,954,000,000	3,146,102,000,000	3,069,329,000,000
Income (loss) before income tax expense (benefit)	656,734,000,000	(58,727,000,000)	1,608,342,000,000
Income tax expense (benefit)	26,413,000,000	(14,511,000,000)	444,948,000,000
Net income (loss) before attribution of noncontrolling interests	630,321,000,000	(44,216,000,000)	1,163,394,000,000
Net income attributable to noncontrolling interests	30,413,000,000	39,104,000,000	46,096,000,000
Net income (loss) attributable to Mitsubishi UFJ Financial Group	599,908,000,000	(83,320,000,000)	1,117,298,000,000
Earnings (loss) applicable to common shareholders of Mitsubishi UFJ Financial Group	¥ 599,908,000,000	¥ (83,320,000,000)	¥ 1,117,298,000,000
Earnings (loss) per common share applicable to common shareholders of Mitsubishi UFJ Financial Group (Notes 19 and 22):
Basic earnings (loss) per common share—Earnings (loss) applicable to common shareholders of Mitsubishi UFJ Financial Group (in Yen per share)	¥ 48.70	¥ (6.51)	¥ 86.88
Diluted earnings (loss) per common share—Earnings (loss) applicable to common shareholders of Mitsubishi UFJ Financial Group (in Yen per share)	48.39	(6.93)	86.56
Cash dividend per common share (in YEN per share)	¥ 30.50	¥ 26	¥ 25
Weighted average common shares outstanding (in shares)	12,317,723	12,798,060	12,859,737
Weighted average diluted common shares outstanding (in shares)	12,318,855	12,798,060	12,859,737

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income (loss) before attribution of noncontrolling interests	¥ 630,321	¥ (44,216)	¥ 1,163,394
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Net unrealized losses on investment securities	(220,772)	(261,493)	(70,776)
Net debt valuation adjustments	17,806	23,324	(83,364)
Net unrealized gains (losses) on derivatives qualifying for cash flow hedges	5,398	(12,774)	32,175
Defined benefit plans (Note 13)	7,262	50,949	319,056
Foreign currency translation adjustments	847,705	752,479	(115,251)
Total	657,399	552,485	81,840
Comprehensive income	1,287,720	508,269	1,245,234
Net income attributable to noncontrolling interests	30,413	39,104	46,096
Other comprehensive income (loss) attributable to noncontrolling interests	19,949	35,971	(49,062)
Comprehensive income attributable to Mitsubishi UFJ Financial Group	¥ 1,237,358	¥ 433,194	¥ 1,248,200

Consolidated Statements of Equi

Consolidated Statements of Equity - JPY (¥)	Total	Capital stock	Capital surplus	Retained earnings appropriated for legal reserve	Unappropriated retained earnings	Unappropriated retained earnings Revision of Prior Period, Accounting Standards Update, Adjustment	Accumulated other comprehensive income (loss), net of taxes:	Accumulated other comprehensive income (loss), net of taxes: Revision of Prior Period, Accounting Standards Update, Adjustment	Treasury stock, at cost:	Total Mitsubishi UFJ Financial Group shareholders’ equity	Noncontrolling interests:	Noncontrolling interests: Revision of Prior Period, Accounting Standards Update, Adjustment
Balance at beginning of fiscal year at Mar. 31, 2020		¥ 2,090,270,000,000	¥ 5,533,520,000,000	¥ 239,571,000,000	¥ 8,079,530,000,000		¥ (420,417,000,000)		¥ (505,987,000,000)		¥ 728,029,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation			2,762,000,000
Retirement of common stock			0						0
Other—net			(2,521,000,000)								(63,000,000)
Net income (loss) before attribution of noncontrolling interests	¥ 1,163,394,000,000				1,117,298,000,000
Common stock—¥25.00 per share in 2021, ¥26.00 per share in 2022, and ¥30.50 per share in 2023					(321,089,000,000)
Losses on sales of shares of treasury stock					(1,000,000)
Elimination of the difference in reporting periods of the transferred business (Note 2)					0		0
Net change during the fiscal year	81,840,000,000						130,902,000,000				(49,062,000,000)
Purchases of shares of treasury stock (Note 18)									(20,000,000)
Sales of shares of treasury stock									2,598,000,000
Net decrease (increase) resulting from changes in interests in consolidated subsidiaries, consolidated VIEs, and affiliated companies									337,000,000
Initial subscriptions of noncontrolling interests											9,246,000,000
Transactions between the consolidated subsidiaries and the related noncontrolling interest shareholders											(96,335,000,000)
Decrease in noncontrolling interests related to deconsolidation of subsidiaries											(22,430,000,000)
Decrease in noncontrolling interests related to disposition of subsidiaries											(23,000,000)
Net income attributable to noncontrolling interests	(46,096,000,000)										46,096,000,000
Dividends paid to noncontrolling interests											(6,523,000,000)
Balance at end of fiscal year at Mar. 31, 2021	16,244,554,000,000	2,090,270,000,000	5,533,761,000,000	239,571,000,000	8,589,900,000,000		(289,481,000,000)		(503,072,000,000)	¥ 15,660,949,000,000	583,605,000,000
Balance at end of fiscal year (Effect of adopting new guidance on measurement of credit losses on financial instruments) at Mar. 31, 2021						¥ (285,838,000,000)		¥ 34,000,000				¥ (25,330,000,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation			1,555,000,000
Retirement of common stock			204,456,000,000						204,456,000,000
Other—net			(3,088,000,000)								1,000,000
Net income (loss) before attribution of noncontrolling interests	(44,216,000,000)				(83,320,000,000)
Common stock—¥25.00 per share in 2021, ¥26.00 per share in 2022, and ¥30.50 per share in 2023					(333,934,000,000)
Losses on sales of shares of treasury stock					0
Elimination of the difference in reporting periods of the transferred business (Note 2)					0		0
Net change during the fiscal year	552,485,000,000						516,514,000,000				35,971,000,000
Purchases of shares of treasury stock (Note 18)									(158,529,000,000)
Sales of shares of treasury stock									5,581,000,000
Net decrease (increase) resulting from changes in interests in consolidated subsidiaries, consolidated VIEs, and affiliated companies									(660,000,000)
Initial subscriptions of noncontrolling interests											5,647,000,000
Transactions between the consolidated subsidiaries and the related noncontrolling interest shareholders											67,300,000,000
Decrease in noncontrolling interests related to deconsolidation of subsidiaries											(14,468,000,000)
Decrease in noncontrolling interests related to disposition of subsidiaries											(80,000,000)
Net income attributable to noncontrolling interests	(39,104,000,000)										39,104,000,000
Dividends paid to noncontrolling interests											(25,626,000,000)
Balance at end of fiscal year at Mar. 31, 2022	16,296,522,000,000	2,090,270,000,000	5,327,772,000,000	239,571,000,000	8,172,646,000,000		227,033,000,000		(452,224,000,000)	15,605,068,000,000	691,454,000,000
Balance at end of fiscal year (Effect of adopting new guidance on measurement of credit losses on financial instruments) at Mar. 31, 2022						0		0				0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation			(6,022,000,000)
Retirement of common stock			418,098,000,000						418,098,000,000
Other—net			(1,497,000,000)								(939,000,000)
Net income (loss) before attribution of noncontrolling interests	630,321,000,000				599,908,000,000
Common stock—¥25.00 per share in 2021, ¥26.00 per share in 2022, and ¥30.50 per share in 2023					(379,571,000,000)
Losses on sales of shares of treasury stock					0
Elimination of the difference in reporting periods of the transferred business (Note 2)					(223,273,000,000)		(20,291,000,000)
Net change during the fiscal year	657,399,000,000						637,450,000,000				19,949,000,000
Purchases of shares of treasury stock (Note 18)									(450,376,000,000)
Sales of shares of treasury stock									2,118,000,000
Net decrease (increase) resulting from changes in interests in consolidated subsidiaries, consolidated VIEs, and affiliated companies									(168,000,000)
Initial subscriptions of noncontrolling interests											3,316,000,000
Transactions between the consolidated subsidiaries and the related noncontrolling interest shareholders											(10,174,000,000)
Decrease in noncontrolling interests related to deconsolidation of subsidiaries											(9,925,000,000)
Decrease in noncontrolling interests related to disposition of subsidiaries											(2,489,000,000)
Net income attributable to noncontrolling interests	(30,413,000,000)										30,413,000,000
Dividends paid to noncontrolling interests											(18,784,000,000)
Balance at end of fiscal year at Mar. 31, 2023	¥ 16,466,167,000,000	¥ 2,090,270,000,000	¥ 4,902,155,000,000	¥ 239,571,000,000	¥ 8,169,710,000,000		¥ 844,192,000,000		¥ (482,552,000,000)	¥ 15,763,346,000,000	¥ 702,821,000,000
Balance at end of fiscal year (Effect of adopting new guidance on measurement of credit losses on financial instruments) at Mar. 31, 2023						¥ 0		¥ 0				¥ 0

Consolidated Statements of Eq_2

Consolidated Statements of Equity (Parenthetical) - ¥ / shares	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Statement of Stockholders' Equity [Abstract]
Cash dividend per common share (in YEN per share)	¥ 30.50	¥ 26	¥ 25

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - JPY (¥)	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net income (loss) before attribution of noncontrolling interests	¥ 630,321,000,000	¥ (44,216,000,000)	¥ 1,163,394,000,000
Adjustments to reconcile net income before attribution of noncontrolling interests to net cash provided by operating activities:
Depreciation and amortization (Notes 5 and 6)	348,173,000,000	343,678,000,000	337,411,000,000
Impairment of goodwill (Note 6)	33,553,000,000	0	147,564,000,000
Impairment of intangible assets (Note 6)	5,151,000,000	33,301,000,000	21,680,000,000
Gain on sale of MUFG Union Bank	(557,954,000,000)	0	0
Reversal of impairment (impairment) of assets held for sale	(134,141,000,000)	134,141,000,000	0
Loss on valuation adjustment for loans held for sale held by MUFG Union Bank (Note 2)	282,540,000,000	3,165,000,000	0
Provision for credit losses (Note 4)	8,148,000,000	277,995,000,000	484,210,000,000
Employee benefit cost (income) for severance indemnities and pension plans (Note 13)	47,740,000,000	(25,675,000,000)	2,804,000,000
Investment securities (gains) losses—net	254,178,000,000	119,026,000,000	(1,458,264,000,000)
Amortization of premiums on investment securities	51,514,000,000	72,672,000,000	59,614,000,000
Changes in financial instruments measured at fair value under fair value option, excluding trading account securities—net (Note 31)	(37,318,000,000)	(55,634,000,000)	5,002,000,000
Foreign exchange gains—net	(508,644,000,000)	(345,968,000,000)	(103,917,000,000)
Equity in earnings of equity method investees—net	(398,086,000,000)	(436,583,000,000)	(355,730,000,000)
Provision (benefit) for deferred income tax expense	(427,776,000,000)	(370,668,000,000)	266,273,000,000
Decrease (increase) in trading account assets, excluding foreign exchange contracts	(184,246,000,000)	4,143,581,000,000	1,351,570,000,000
Increase (decrease) in trading account liabilities, excluding foreign exchange contracts	2,740,193,000,000	(2,195,400,000,000)	(1,463,152,000,000)
Net decrease (increase) in collateral for derivative transactions	713,541,000,000	(824,720,000,000)	(421,781,000,000)
Net decrease (increase) in margin for listed derivative transactions	(136,057,000,000)	(103,568,000,000)	20,984,000,000
Decrease (increase) in cash collateral for the use of the Bank of Japan’s settlement infrastructure	0	65,838,000,000	(33,292,000,000)
Net increase in loans held for sale in the business transferred to U.S. Bancorp (Note 2)	1,499,485,000,000	0	0
Other—net	874,791,000,000	118,390,000,000	(269,437,000,000)
Net cash provided by (used in) operating activities	2,106,136,000,000	909,355,000,000	(245,067,000,000)
Cash flows from investing activities:
Proceeds from sales of Available-for-sale debt securities (including proceeds from debt securities under the fair value option) (Note 3)	56,577,840,000,000	58,611,669,000,000	62,660,266,000,000
Proceeds from maturities of Available-for-sale debt securities (including proceeds from debt securities under the fair value option) (Note 3)	32,907,726,000,000	36,056,569,000,000	43,245,884,000,000
Purchases of Available-for-sale debt securities (including purchases of debt securities under the fair value option) (Note 3)	(81,038,628,000,000)	(94,237,804,000,000)	(115,383,753,000,000)
Proceeds from maturities of Held-to-maturity debt securities	127,815,000,000	565,012,000,000	605,781,000,000
Purchases of Held-to-maturity debt securities	(16,975,528,000,000)	(1,712,488,000,000)	(382,159,000,000)
Proceeds from sales and redemption of Equity securities (including proceeds from equity securities under the fair value option)	2,857,748,000,000	2,212,801,000,000	1,903,784,000,000
Purchases of Equity securities (including purchases of equity securities under the fair value option)	(1,912,280,000,000)	(1,503,946,000,000)	(1,561,344,000,000)
Net decrease in cash from sale of MUB	(1,711,764,000,000)	0	0
Net cash paid for dispositions of certain business of MUAH	0	(724,428,000,000)	0
Net decrease (increase) in loans	(1,496,724,000,000)	164,122,000,000	2,939,996,000,000
Net decrease (increase) in call loans, funds sold, and receivables under resale agreements and securities borrowing transactions	(1,297,909,000,000)	1,005,422,000,000	9,833,348,000,000
Proceeds from sales of premises and equipment	32,214,000,000	76,068,000,000	41,472,000,000
Capital expenditures for premises and equipment	(116,367,000,000)	(102,964,000,000)	(116,707,000,000)
Purchases of intangible assets	(272,534,000,000)	(264,038,000,000)	(250,061,000,000)
Proceeds from sales and dispositions of investments in equity method investees	137,992,000,000	65,398,000,000	64,011,000,000
Proceeds from sales of consolidated VIEs and subsidiaries—net	1,697,000,000	42,050,000,000	71,643,000,000
Other—net	(34,917,000,000)	(16,608,000,000)	(14,802,000,000)
Net cash provided by (used in) investing activities	(12,213,619,000,000)	236,835,000,000	3,657,359,000,000
Cash flows from financing activities:
Net increase in deposits	6,207,093,000,000	1,559,807,000,000	23,428,386,000,000
Net increase (decrease) in call money, funds purchased, and payables under repurchase agreements and securities lending transactions	11,656,491,000,000	1,128,806,000,000	(8,523,347,000,000)
Net increase (decrease) in due to trust account and other short-term borrowings	(8,456,081,000,000)	4,404,313,000,000	(939,069,000,000)
Proceeds from issuance of long-term debt	7,529,772,000,000	4,659,212,000,000	18,707,004,000,000
Repayments of long-term debt	(4,168,619,000,000)	(5,466,007,000,000)	(11,360,120,000,000)
Proceeds from sales of treasury stock	1,212,000,000	2,688,000,000	899,000,000
Payments for acquisition of treasury stock (Note 18)	(450,376,000,000)	(158,529,000,000)	(20,000,000)
Dividends paid	(379,490,000,000)	(333,844,000,000)	(321,024,000,000)
Dividends paid by subsidiaries to noncontrolling interests	(18,784,000,000)	(25,626,000,000)	(6,523,000,000)
Other—net	55,059,000,000	(385,778,000,000)	(22,566,000,000)
Net cash provided by financing activities	11,976,277,000,000	5,385,042,000,000	20,963,620,000,000
Effect of exchange rate changes on cash and cash equivalents	1,063,752,000,000	1,251,522,000,000	397,287,000,000
Net increase in cash and cash equivalents	2,932,546,000,000	7,782,754,000,000	24,773,199,000,000
Cash and cash equivalents at beginning of fiscal year	111,111,544,000,000	103,328,790,000,000	78,555,591,000,000
Cash and cash equivalents:
Cash, due from banks and interest-earning deposits in other banks	114,040,503,000,000	109,820,547,000,000	103,324,201,000,000
Restricted cash included in other assets	3,587,000,000	5,778,000,000	4,589,000,000
Cash and cash equivalents classified as assets held for sale included in other assets (Note 2)	0	1,285,219,000,000	0
Cash and cash equivalents at end of fiscal year	114,044,090,000,000	111,111,544,000,000	103,328,790,000,000
Cash paid during the fiscal year for:
Interest	1,942,163,000,000	596,453,000,000	879,917,000,000
Income taxes, net of refunds	453,869,000,000	220,139,000,000	124,705,000,000
Non-cash investing and financing activities:
Assets acquired under finance lease arrangements (Note 7)	11,066,000,000	4,055,000,000	3,487,000,000
Assets acquired under operating lease arrangements (Note 7)	35,678,000,000	48,095,000,000	50,564,000,000
Reclassification of assets and liabilities in transferred business of MUFG Union Bank to assets and liabilities held for sale (Note 2)
Sale of MUFG Union Bank (Note 2)	0	10,336,348,000,000	0
Assets sold, excluding cash and cash equivalents	0	11,157,660,000,000	¥ 0
Noncash Or Part Noncash Transactions From Dispositions [Abstract]
Assets transferred, excluding cash and cash equivalents	11,501,815,000,000	4,477,000,000
Liabilities transferred	13,127,973,000,000	¥ 758,654,000,000
Shares of U.S. Bancorp common stock received
Noncash Or Part Noncash Transactions From Dispositions [Abstract]
Noncash or part noncash divestiture, consideration received	276,099,000,000
Non-interest bearing note receivable from U.S. Bancorp
Noncash Or Part Noncash Transactions From Dispositions [Abstract]
Noncash or part noncash divestiture, consideration received	¥ 396,601,000,000

Basis of Financial Statements a

Basis of Financial Statements and Summary of Significant Accounting Policies	12 Months Ended
	Mar. 31, 2023
Accounting Policies [Abstract]
Basis of Financial Statements and Summary of Significant Accounting Policies	BASIS OF FINANCIAL STATEMENTS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Description of Business Mitsubishi UFJ Financial Group, Inc. (“MUFG”) is a holding company for MUFG Bank, Ltd. (“MUFG Bank” or “BK”), Mitsubishi UFJ Trust and Banking Corporation (“Mitsubishi UFJ Trust and Banking” or “TB”), Mitsubishi UFJ Securities Holdings Co., Ltd. (“Mitsubishi UFJ Securities Holdings”), Mitsubishi UFJ NICOS Co., Ltd. (“Mitsubishi UFJ NICOS”), and other subsidiaries. Mitsubishi UFJ Securities Holdings is an intermediate holding company for Mitsubishi UFJ Morgan Stanley Securities Co., Ltd. (“Mitsubishi UFJ Morgan Stanley Securities”). Through its subsidiaries and affiliated companies, MUFG engages in a broad range of financial operations, including commercial banking, investment banking, trust banking and asset management services, securities businesses, and credit card businesses, and it provides related services to individual and corporate customers. See Note 29 for more information by business segment. Basis of Financial Statements The accompanying consolidated financial statements are presented in Japanese yen, the currency of the country in which MUFG is incorporated and principally operates. The accompanying consolidated financial statements have been prepared on the basis of accounting principles generally accepted in the United States of America (“U.S. GAAP”). In certain respects, the accompanying consolidated financial statements reflect adjustments to conform with U.S. GAAP and therefore are not included in the consolidated financial statements issued by MUFG in accordance with accounting principles generally accepted in Japan (“Japanese GAAP”) and certain of its subsidiaries in accordance with the corresponding applicable statutory requirements and accounting practices in their respective countries of incorporation. The major adjustments include those relating to (1) investment securities, (2) derivative financial instruments, (3) allowance for credit losses, (4) income taxes, (5) consolidation, (6) premises and equipment, (7) transfer of financial assets, (8) accrued severance indemnities and pension liabilities, (9) goodwill and other intangible assets and (10) lease transactions. Fiscal years of certain subsidiaries, which end on December 31, and MUFG’s fiscal year, which ends on March 31, have been treated as coterminous. For the fiscal years ended March 31, 2021, 2022 and 2023, the effect of recording intervening events for the three-month periods ended March 31 on MUFG’s proportionate equity in net income of subsidiaries with fiscal years ended on December 31, would have resulted in an increase of ¥157.32 billion, a decrease of ¥60.64 billion, and an increase of ¥16.6 billion to net income attributable to Mitsubishi UFJ Financial Group, respectively. No intervening events occurred during each of the three-month periods ended March 31, 2021, 2022 and 2023 which, if recorded, would have had material effects on consolidated total assets, loans, total liabilities, deposits or total equity as of March 31, 2021, 2022 and 2023. Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to management judgment primarily relate to the allowance for credit losses, the valuation of deferred tax assets, the valuation of financial instruments, the accounting for goodwill and intangible assets, impairment of investment securities, the allowances for repayment of excess interest and accrued severance indemnities and pension liabilities. Summary of Significant Accounting Policies Significant accounting policies applied in the accompanying consolidated financial statements are summarized below: Consolidation —The accompanying consolidated financial statements include the accounts of MUFG, its subsidiaries and certain variable interest entities (“VIE”s) (together, the “MUFG Group”). In situations in which the MUFG Group has a controlling financial interest in other entities, including certain VIEs, such entities are consolidated and noncontrolling interests, if any, are recorded in Total equity. Intercompany transactions and balances have been eliminated. Investments in affiliated companies (companies over which the MUFG Group has the ability to exercise significant influence) are accounted for by the equity method of accounting and are reported in Other assets. The MUFG Group’s equity interest in the earnings of these equity investees and other-than-temporary impairment (“OTTI”) are reported in Equity in earnings of equity method investees-net. The MUFG Group recognizes an impairment loss on investments in equity method investees that is other-than-temporary. The MUFG Group determines whether loss on investments is other-than-temporary, through consideration of various factors, such as inability to recover the carrying amount of the investment, the inability of the investee to sustain an earnings capacity that would justify the carrying amount of the investment, the length of time and the extent to which the fair value has been less than cost, the financial condition and near-term prospects of the investees, and the intent and ability to retain its investment in the investees for a period of time sufficient to allow for any anticipated recovery in the fair value. The MUFG Group also evaluates additional factors, such as the condition and trend of the economic cycle, and trends in the general market. The MUFG Group consolidates VIEs if it has the power to direct the activities of a VIE which most significantly impact the VIE’s economic performance and has the obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE. To assess whether a VIE should be consolidated or not, the MUFG Group considers all factors, such as the purpose and design of the VIE, contractual arrangements, and the MUFG Group’s involvement in both the establishment of the VIE and day-to-day activities of the VIE. The MUFG Group considers a right to make the most significant decisions affecting a VIE to determine whether it is deemed to have the power to direct the activities of the VIE. Furthermore, the MUFG Group considers its economic interests in the VIE, including investments in debt or equity instruments issued by the VIE, liquidity and credit enhancement, and guarantees to determine whether such interests are potentially significant to the VIE or not. Assets that the MUFG Group holds in an agency, fiduciary or trust capacity are not assets of the MUFG Group and, accordingly, are not included in the accompanying consolidated balance sheets. Cash Flows —For the purposes of reporting cash flows, cash and cash equivalents consist of Cash and due from banks, Interest-earning deposits in other banks, and certain restricted cash included in Other assets. Restricted cash included in cash and cash equivalents represents cash or deposits subject to withdrawal or usage restrictions, and mainly consist of reserves on deposits with the Bank of Japan and similar reserves required for foreign offices and subsidiaries engaged in banking businesses in foreign countries. Cash flows from qualified hedging activities are classified in the same category as the items being hedged. Translation of Foreign Currency Financial Statements and Foreign Currency Transactions —Financial statements of overseas entities are translated into Japanese yen using the respective fiscal year-end exchange rates for assets and liabilities. Income and expense items are translated at average rates of exchange for the respective fiscal years. Foreign currency translation gains and losses related to the financial statements of overseas entities of the MUFG Group, net of related income tax effects, are credited or charged directly to Foreign currency translation adjustments, a component of Accumulated other comprehensive income (“Accumulated OCI”). Tax effects of gains and losses on foreign currency translation of the financial statements of overseas entities are not recognized unless it is apparent that the temporary differences will reverse in the foreseeable future. Foreign currency-denominated assets and liabilities are translated into the functional currencies of the individual entities included in consolidation at the respective fiscal year-end foreign exchange rates. Foreign currency-denominated income and expenses are translated using average rates of exchange for the respective fiscal years. Gains and losses from such translation are included in Foreign exchange gains (losses)—net, as appropriate. Repurchase Agreements, Securities Lending and Other Secured Financing Transactions —Securities sold with agreements to repurchase (“repurchase agreements”), securities purchased with agreements to resell (“resale agreements”) and securities lending and borrowing transactions are accounted for as secured financing or lending transactions, if the transferor has not surrendered control over the securities. Repurchase agreements and resale agreements are generally carried at the amounts at which the securities will be subsequently sold or repurchased, and securities lending and borrowing transactions are generally carried at the amount of cash collateral advanced or received. If they meet the relevant conditions for the surrender of control, they are accounted for as sales of securities with related off-balance sheet forward repurchase commitments or purchases of securities with related off-balance sheet forward resale commitments. For the fiscal years ended March 31, 2021, 2022 and 2023, there were no such transactions accounted for as sales or purchases. Collateral —For secured lending transactions, including resale agreements, securities borrowing transactions, commercial lending and derivative transactions, the MUFG Group, as a secured party, generally has the right to require the counterparties to provide collateral, including letters of credit, cash, securities and other financial assets. For most secured lending transactions, the MUFG Group maintains strict levels of collateralization governed by a daily mark-to-market analysis. Financial assets pledged as collateral are generally negotiable financial instruments and are permitted to be sold or repledged by secured parties. If the MUFG Group sells these financial assets received as collateral, it recognizes the proceeds from the sale and its obligation to return the collateral. For secured borrowing transactions, principally repurchase agreements and securities lending transactions and derivative transactions, where the secured party has the right to sell or repledge financial assets pledged as collateral, the MUFG Group separately discloses those financial assets pledged as collateral in the accompanying consolidated balance sheets. Trading Account Securities —Securities and money market instruments held in anticipation of short-term market movements and for resale to customers are included in Trading account assets, and short trading positions of these instruments are included in Trading account liabilities. Trading positions are carried at fair value in the accompanying consolidated balance sheets and recorded on a trade date basis. Changes in the fair value of trading positions are recognized in Trading account profits (losses). The MUFG Group has elected the fair value option for certain foreign securities. See Note 31 for a further discussion of fair value option. Investment Securities —Debt securities for which the MUFG Group has both the ability and positive intent to hold to maturity are classified as Held-to-maturity debt securities and are carried at amortized cost. Debt securities that the MUFG Group may not hold to maturity other than those classified as Trading account securities, are classified as Available-for-sale debt securities, and are carried at their fair values, with unrealized gains and losses reported on a net-of-tax basis within Accumulated OCI, which is a component of equity. Available-for-sale debt securities are considered to be impaired if the fair value is less than the amortized cost basis. An impairment loss is recognized in earnings for a security if the MUFG Group has intent to sell such a debt security or if it is more likely than not the MUFG Group will be required to sell such a debt security before recovery of its amortized cost basis. If not, the credit component of an impairment loss is recognized in earnings by recording an allowance for credit losses, limited by the amount of impairment loss. However, the noncredit component of an impairment loss is recognized in Accumulated OCI. In determining whether a credit loss exists, the MUFG Group generally considers factors such as the financial condition of the issuer and the extent of decline in fair value. For Held-to-maturity debt securities, an allowance for expected credit losses over the remaining expected life is required to be provided. Equity securities include marketable equity investment securities and nonmarketable equity investment securities. Marketable equity investment securities are measured at fair value with unrealized gains or losses reflected in net income. Nonmarketable equity investment securities are primarily measured at cost minus impairment, if any, plus or minus changes resulting from observable price changes. Nonmarketable equity investment securities held by subsidiaries that are investment companies or brokers and dealers, are subject to the specialized industry accounting principles for investment companies and brokers and dealers. Securities of those subsidiaries are carried at their fair values. Interest and dividends on investment securities are reported in Interest income. Dividends are recognized when the shareholder right to receive the dividend is established. Gains and losses on disposition of investment securities are computed using the average cost method and are recognized on the trade date. Derivative Financial Instruments —The MUFG Group engages in derivative activities involving swaps, forwards, futures, options, and other types of derivative contracts. Derivatives are used in trading activities to generate trading revenues and fee income for its own account and to respond to customers’ financial needs. Derivatives are also used to manage counterparty credit risk and market risk exposures to fluctuations in interest and foreign exchange rates, equity and commodity prices. Derivatives entered into for trading purposes are carried at fair value and are reported as Trading account assets or Trading account liabilities, as appropriate. The fair values of derivative contracts executed with the same counterparty under legally enforceable master netting agreements are presented on a gross basis. Changes in the fair value of such contracts are recognized currently in Foreign exchange gains (losses)—net with respect to foreign exchange contracts and in Trading account profits (losses)—net with respect to interest rate contracts and other types of contracts. Embedded features that are not clearly and closely related to the host contracts and meet the definition of derivatives are separated from the host contracts and measured at fair value unless the contracts embedding the derivatives are measured at fair value in their entirety. Derivatives are also used to manage exposures to fluctuations in interest and foreign exchange rates arising from mismatches of asset and liability positions. Certain of those derivatives are designated as hedging instruments and qualify for hedge accounting. The MUFG Group designates a derivative as a hedging instrument at the inception of each such hedge relationship, and it documents, for such individual hedging relationships, the risk management objective and strategy, including the item being hedged, the specific risk being hedged and the method used to assess the hedge effectiveness. In order for a hedging relationship to qualify for hedge accounting, the changes in the fair value of the derivative instruments must be highly effective in achieving offsetting changes in fair values or variable cash flows of the hedged items attributable to the risk being hedged. All qualifying hedging derivatives are valued at fair value and included in Other assets or Other liabilities, as appropriate. For fair value hedges, the changes in the fair value of a hedging instrument are recognized in the same income statement line as the hedged item. For cash flow hedges, the changes in the fair value of a hedging instrument are recognized in Accumulated OCI. Amounts realized on cash flow hedges related to variable rate loans are recognized in Net interest income in the period when the cash flow from the hedged item is realized. Any difference that arises from gains or losses on hedging derivatives offsetting corresponding gains or losses on the hedged items, and gains and losses on derivatives attributable to the risks excluded from the assessment of hedge effectiveness are recognized in earnings. Loans —Loans originated by the MUFG Group (“originated loans”) are carried at the principal amount outstanding, adjusted for unearned income and deferred net nonrefundable loan fees and costs. Originated loans held and intended for dispositions or sale in secondary markets are transferred to the held-for-sale classification and carried at the lower of cost or estimated fair value generally on an individual loan basis. Loan origination fees, net of certain direct origination costs, are deferred and recognized over the contractual life of the loan as an adjustment to yield using a method that approximates the interest method. The MUFG Group classifies its loan portfolio into the following portfolio segments—Commercial, Residential, Card, MUFG Americas Holdings Corporation (“MUFG Americas Holdings” or “MUAH”), Bank of Ayudhya Public Company Limited (“Krungsri”), and Other based on the grouping used by the MUFG Group to determine the allowance for credit losses. The MUFG Group further classifies the Commercial segment into classes based on initial measurement attributes, risk characteristics, and its method of monitoring and assessing credit risk. The MUFG Americas Holdings segment was eliminated due to the transfer of the MUFG Union Bank shares to U.S. Bancorp and the internal reorganization within the MUFG Group. Please refer to Note 2 and Note 4 for further information of the transfer. Past due status is determined based on the contractual terms of the loan and the actual number of days since the date the last payment was made. Originated loans are generally placed on nonaccrual status when substantial doubt exists as to the full and timely collection of either principal or interest, specifically when principal or interest is contractually past due one month or more with respect to loans within all classes of the Commercial segment, three months or more with respect to loans within the Card, MUFG Americas Holdings, and Krungsri segments, and six months or more with respect to loans within the Residential segment. A nonaccrual loan may be restored to an accrual status when interest and principal payments become current and management expects that the borrower will make future contractual payments as scheduled. When a loan is placed on nonaccrual status, interest accrued but not received is generally reversed against interest income. Cash receipts on nonaccrual loans, for which the ultimate collectibility of principal is uncertain, are applied as principal reductions; otherwise, such collections are credited to income. The MUFG Group modifies certain loans in conjunction with its loss-mitigation activities. Through these modifications, concessions are granted to a borrower who is experiencing financial difficulty, generally in order to minimize economic loss, to avoid foreclosure or repossession of collateral, and to ultimately maximize payments received from the borrower. The concessions granted vary by portfolio segment, by program, and by borrower-specific characteristics, and may include interest rate reductions, term extensions, payment deferrals, and partial principal forgiveness. Loan modifications that represent concessions made to borrowers who are experiencing financial difficulties are identified as troubled debt restructurings (“TDRs”). Generally, accruing loans that are modified in a TDR remain as accruing loans subsequent to the modification, and nonaccrual loans remain as nonaccrual. However, if a nonaccrual loan has been modified as a TDR, the borrower is not delinquent under the modified terms, and demonstrates that its financial condition has improved, the MUFG Group may reclassify the loan to accrual status. This determination is generally performed at least once a year through a detailed internal credit rating review process. Once a nonaccrual loan is deemed to be a TDR, the MUFG Group will continue to designate the loan as a TDR even if the loan is reclassified to accrual status. Loan Securitization —The MUFG Group securitizes and services commercial, industrial, and residential loans in the normal course of business. The MUFG Group accounts for a transfer of loans in a securitization transaction as a sale if it meets relevant conditions for the surrender of control. Otherwise, the transfer is accounted for as a collateralized borrowing transaction. When a securitization is accounted for as a sale, the proceeds from a sale of financial assets consist of the cash and any other assets obtained, including beneficial interests and separately recognized servicing assets, in the transfer less any liabilities incurred, including separately recognized servicing liabilities. All proceeds and reductions of proceeds from a sale shall be initially measured at fair value. Allowance for Credit Losses (Loans) —The MUFG Group maintains an allowance for credit losses, which is a valuation account that is deducted from the amortized cost basis of the loans to present the net amount expected to be collected on the loans. The amount necessary to adjust the allowance for credit losses for management’s current estimate of expected credit losses on loans is reported in net income as a credit loss expense. Actual credit losses (amounts deemed uncollectible, in whole or in part), net of recoveries, are generally determined based on detailed loan reviews and a credit assessment by management at each balance sheet date and are deducted from the allowance for credit losses as net charge-offs. The MUFG Group generally applies its charge-off policy to all loans in its portfolio regardless of the type of borrower. Management believes that the provision for credit losses is adequate. Key elements relating to the policies and discipline used in determining the allowance for credit losses are credit classification and the related borrower categorization process. The categorization is based on conditions that may affect the ability of borrowers to service their debt, taking into consideration current financial information, historical payment experience, credit documentation, public information, analyses of relevant industry segments and existing economic conditions. In determining the appropriate level of the allowance, the MUFG Group evaluates the probable loss by collateral value, historical loss experience, probability of insolvency and category of loan based on its type and characteristics. For the allowance methodology, the MUFG Group uses quantitative models that incorporate economic forecast scenarios. These economic forecast scenarios include macroeconomic variables that have historically been correlated with historical credit losses. These variables include, but are not limited to, unemployment rates and gross domestic product. As any one economic forecast scenario is inherently uncertain, multiple economic forecast scenarios were leveraged. The macroeconomic variables in multiple economic forecast scenarios and weightings given to each scenario depend on a variety of factors including recent economic conditions and views of internal, as well as third-party, economists. The allowance for credit losses for TDR is measured using the discounted cash flow method, or based on the fair value of the collateral if the loan is collateral dependent. The allowance for credit losses includes qualitative adjustments to cover losses that are expected but were not reflected in the modeled allowance. For example, factors that the MUFG considers include remaining time to maturity and extent of prepayments, credit concentration, the volume and severity of past due, changes in lending policy and procedures, among others. In all segments, when estimating the allowance for credit losses, significant management assumptions are incorporated in economic variables, qualitative adjustments, or both to capture the heightened volatility and uncertainty in future economic conditions arising mainly from the prolonged COVID-19 and Russia-Ukraine situation. There are de minimis or zero expected credit losses, for example, for lending and financing transactions, such as Interest-earning deposits in other banks, Call loans and funds sold, Receivables under resale agreements and Receivables under securities borrowing transactions because the term is short and the credit quality of the borrowers is normal. The methodologies used to estimate the allowance and the charge-off policy for the major portfolio segments are as follows: Commercial segment In the Commercial segment, expected credit losses of loans are measured on a collective basis when similar risk characteristics exist. Risk characteristics that are considered for aggregation of loans include internal credit ratings, geographical location, and industry of the borrower. The collectively-assessed allowance is measured over the contractual term of the loans that is adjusted for expected prepayments, using probability of default (“PD”), loss given default (“LGD”) and exposure at default (“EAD”) loss forecasting model, which is based on historical information and adjusted to incorporate expectations of future economic conditions considering economic variables such as gross domestic product and unemployment rates. The PD is determined as the marginal PD that denotes the likelihood that a borrower is observed to experience the default during a defined period of time, based on internal credit rating, geographical location, or industry of the borrower. The LGD is determined as the estimated loss on the loan that would be realized upon the default of the borrower, mainly based on the historical experience of collections against loans in default. The PD and LGD are continually reviewed to determine the appropriate level of the allowance for credit loss. Qualitative adjustments are made to cover losses that are expected but not adequately captured in the quantitative forecasting model or economic assumptions, considering factors such as remaining time to maturity and extent of prepayments, the volume and severity of past due loans, changes in lending policy and procedures, the industry in which a borrower operates, and changes in other external factors. The collectively-assessed allowance methodology incorporates an economic forecast over a three-year period. Beyond the three-year economic forecast, the allowance methodology reverts to an average historical loss information on a straight-line basis over a two-year period. When a loan does not share risk characteristics with other loans, expected credit losses for that loan are measured on an individual basis. Individually-assessed allowance is measured based on the present value of expected future cash flows discounted at the loan’s original effective interest rate, or the fair value of the collateral if the loan is collateral dependent. The allowance for loans that have been modified into a TDR or reasonably expected to be modified into a TDR are measured on an individual basis. For nonaccrual TDRs, the allowance for credit losses is provided for these loans using the discounted cash flow method, or based on the fair value of the collateral. For TDRs accounted for as accruing loans, the allowance for credit losses is determined by discounting the estimated future cash flows using the original effective interest rate of the loans prior to modification. In relation to loans categorized as Legally/Virtually Bankrupt, the carrying amount of loans less estimated value of the collateral and guaranteed amount is generally considered uncollectible, and is charged off. Residential segment In the Residential segment, the loans are comprised of smaller-balance homogeneous loans and expected credit losses of loans are measured on a collective basis. The allowance for credit losses is measured over the contractual term of the loans that is adjusted for expected prepayments, using the state transition probability matrix, which captures delinquency status changes and prepayments by loans’ remaining term, and is based on historical information and adjusted to incorporate expectations of future economic conditions considering economic variables, such as unemployment rates. The LGD is also used to capture the estimated loss on the loan that would be realized upon the default of the borrower. The collectively-assessed allowance methodology incorporates an economic forecast over a three-year period. Beyond the three-year economic forecast, the allowance methodology reverts to average historical loss information on a straight-line basis over a two-year period. The allowance for loans that have been modified into a TDR or reasonably expected to be modified into a TDR are measured on an individual basis. For nonaccrual TDRs, the allowance for credit losses is provided for these loans using the discounted cash flow method, or based on the fair value of the collateral. For TDRs accounted for as accruing loans, the allowance for credit losses is determined by discounting the estimated future cash flows using the original effective interest rate of the loans prior to modification. In relation to loans that are in past due status over a certain period of time and deemed uncollectible, the carrying amount of loans less estimated value of the collateral and guaranteed amount is generally considered uncollectible and charged off. Card segment In the Card segment, the loans are smaller-balance homogeneous loans and expected credit losses of loans are measured on a collective basis. The allowance for credit losses is measured over the contractual term of the loans that is adjusted for expected prepayments, using the state transition probability matrix, which captures delinquency status changes and prepayments by loans’ remaining term, and is based on historical information and adjusted to incorporate expectations of future economic conditions considering economic variables, such as unemployment rate. The collectively-assessed allowance methodology incorporates an economic forecast over a three-year period. Beyond the three-year economic forecast, the allowance methodology reverts to average historical loss information. The allowance for loans that have been modified into a TDR or reasonably expected to be modified into a TDR are measured on an individual basis, and the allowance for credit losses is determined using the discounted cash flow method whereby the estimated future cash flows are discounted using the original effective interest rate of the loans prior to modification. In relation to loans that are in past due status over a certain period of time and deemed uncollectible, the amount of loans is generally fully charged off. Krungsri segment In the Krungsri segment, expected credit losses are measured on a collective basis for portfolios of loans that share similar economic risk characteristics. Expected credit losses are a probability-weighted estimate of the present value of credit losses. These are measured as the present value of the difference between the cash flows under the contract and the cash flows expected to be received arising from the weighting of multiple future economic scenarios that consider economic variables such as gross domestic product and unemployment rates, discounted at the loan’s effective interest rate. Qualitative adjustments are made to cover losses that are expected but not adequatel

Business Developments

Business Developments	12 Months Ended
	Mar. 31, 2023
Business Combinations [Abstract]
Business Developments	BUSINESS DEVELOPMENTS Sale of MUFG Union Bank and Investment in Shares of U.S. Bancorp In September 2021, the MUFG Group agreed to the sale of all shares in MUFG Union Bank, N.A. (“MUFG Union Bank”), the wholly-owned primary operating subsidiary in the United States, to U.S. Bancorp (“USB”), which is not a related party of the MUFG Group. The businesses of MUFG Union Bank that the MUFG Group transferred to USB exclude the Global Corporate & Investment Banking (GCIB) business (with certain exceptions as agreed to by the parties, including certain deposits of the GCIB business that were retained by MUFG Union Bank), the Global Markets business to the extent related to the GCIB business and certain assets and liabilities that are part of shared middle and back office functions. Under a legal agreement, the assets and liabilities of these operations were transferred to other entities within the MUFG Group before it sold the shares of MUFG Union Bank. Through this transaction, the MUFG Group aimed to maximize shareholder value by improving our capital efficiency. In addition, as of the end of the reporting period (ended March 31, 2023), the corporate credit card business for GCIB business customers and certain Japanese customers was expected to be transferred from MUFG Union Bank to MUFG Bank, subject to contractual conditions precedent. Such transfer was completed subsequent to the reporting period. The assets and liabilities of MUFG Union Bank, which were transferred to USB, were reclassified as held for sale, and included in Other assets and Other liabilities in the accompanying consolidated balance sheets at March 31, 2022. Assets and liabilities reclassified as held for sale at March 31, 2022 are shown below: At March 31, 2022 (in millions) Assets held for sale: Interest-earning deposits in other banks ¥ 1,110,633 Investment securities 3,188,257 Loans, net of allowance for credit losses 6,561,316 Other 761,361 Total ¥ 11,621,567 Liabilities held for sale: Deposits ¥ 10,448,481 Other 709,179 Total ¥ 11,157,660 The carrying amount of any assets that are not covered by the guidance on long-lived assets and included in the disposal group, must be adjusted in accordance with other applicable guidance before measuring the disposal group by lower of cost or market method. The loss amount, which was recognized through lower of cost or market method from the assets and liabilities held for sale, was ¥134,141 million for the fiscal year ended March 31, 2022. Such amount, which included the fluctuation of the fair value related to the transferred business from the date of the contract to March 31, 2022, is included in Impairment (reversal of impairment) of assets held for sale in the consolidated statements of operations. However, the fair value less cost to sell exceeded the carrying value during the first half of the fiscal year ended March 31, 2023, and the reversal of ¥134,141 million, which is included in Impairment (reversal of impairment) of assets held for sale in the consolidated statements of operations, was recognized, and as a result, the valuation allowance for assets held for sale which was included in Other Asset was fully reversed. On December 1, 2022, the MUFG Group sold all the issued and outstanding shares of common stock of MUFG Union Bank to USB for the agreed upon consideration, received ¥754.0 billion in cash and 44,374,155 shares, ¥276.1 billion, of USB common stock representing approximately 3% of the outstanding shares subject to future closing adjustments. The MUFG Group will receive from USB an additional ¥464.5 billion in cash within five years of the closing date, whose discounted present value at sale was ¥396.6 billion. Before the closing of the share transfer, MUFG Union Bank declared and paid a special dividend of approximately ¥636.8 billion to MUAH. The MUFG Group recorded a pretax gain on the sale of MUFG Union Bank of ¥557,954 million, net of cost to sell the business. The gain was included in Gain on sale of MUFG Union Bank in the consolidated statements of operations for the fiscal year ended March 31, 2023. The business of MUFG Union Bank that was transferred to USB had ¥13,935.6 billion in assets at sale, including ¥2,251.3 billion of interest-earning deposits in other banks, ¥3,123.3 billion of investment securities, and ¥7,567.7 billion of loans. The total amount of liabilities was ¥13,128.0 billion, including ¥11,789.9 billion of deposits. The pretax loss recorded for the business transferred to USB was ¥52,021 million, ¥11,385 million and ¥506,329 million for the fiscal years ended March 31, 2021, 2022 and 2023, respectively. The cash receipts and cash payments for loans held for sale that were originated by MUFG Union Bank during the current year, prior to the sale to USB, are presented within Net increase in loans held for sale in the business transferred to U.S. Bancorp in the consolidated statement of cash flows for the fiscal year ended March 31, 2023. MUFG Union Bank's cash and cash equivalents balance at sale was ¥2,433.8 billion, which when combined with ¥754.0 billion in cash received from USB and certain adjustments resulted in a net decrease in cash and cash equivalents at sale of ¥1,711.8 billion.

Investment Securities

Investment Securities	12 Months Ended
	Mar. 31, 2023
Investments, Debt and Equity Securities [Abstract]
Investment Securities	INVESTMENT SECURITIES The following tables present the amortized cost, gross unrealized gains and losses, and fair value of Available-for-sale debt securities and Held-to-maturity debt securities at March 31, 2022 and 2023: At March 31, 2022: Amortized cost Gross unrealized gains Gross unrealized losses Fair value (in millions) Available-for-sale debt securities: Japanese national government and Japanese government agency bonds ¥ 34,383,131 ¥ 77,144 ¥ 132,511 ¥ 34,327,764 Japanese prefectural and municipal bonds 4,154,459 6,672 14,987 4,146,144 Foreign government and official institution bonds 2,671,797 8,586 49,040 2,631,343 Corporate bonds 1,081,620 9,601 1,073 1,090,148 Residential mortgage-backed securities 900,799 256 648 900,407 Asset-backed securities 1,547,098 41,544 222 1,588,420 Other debt securities 104,869 2,243 3,533 103,579 Commercial paper 1,010,607 49 19 1,010,637 Total ¥ 45,854,380 ¥ 146,095 ¥ 202,033 ¥ 45,798,442 Held-to-maturity debt securities: Japanese national government and Japanese government agency bonds ¥ 1,808,312 ¥ 13,691 ¥ 3,633 ¥ 1,818,370 Japanese prefectural and municipal bonds 175,072 4 1,116 173,960 Residential mortgage-backed securities 234,652 49 8,778 225,923 Asset-backed securities 2,377,073 12,352 1,373 2,388,052 Total ¥ 4,595,109 ¥ 26,096 ¥ 14,900 ¥ 4,606,305 At March 31, 2023: Amortized cost Gross unrealized gains Gross unrealized losses Fair value (in millions) Available-for-sale debt securities: Japanese national government and Japanese government agency bonds ¥ 26,153,862 ¥ 16,510 ¥ 123,769 ¥ 26,046,603 Japanese prefectural and municipal bonds 2,773,750 2,063 15,872 2,759,941 Foreign government and official institution bonds 3,029,042 2,072 108,372 2,922,742 Corporate bonds 1,051,347 9,791 2,977 1,058,161 Residential mortgage-backed securities 1,110,126 569 441 1,110,254 Asset-backed securities 1,418,563 16,116 4,364 1,430,315 Other debt securities 417,755 1,873 6,842 412,786 Total ¥ 35,954,445 ¥ 48,994 ¥ 262,637 ¥ 35,740,802 Held-to-maturity debt securities: Japanese national government and Japanese government agency bonds ¥ 13,860,457 ¥ 32,927 ¥ 19,789 ¥ 13,873,595 Japanese prefectural and municipal bonds 1,144,825 2,473 7,808 1,139,490 Corporate bonds 46,730 213 3 46,940 Residential mortgage-backed securities 3,913,346 13,606 105,754 3,821,198 Asset-backed securities 2,554,723 19 49,809 2,504,933 Total ¥ 21,520,081 ¥ 49,238 ¥ 183,163 ¥ 21,386,156 Contractual Maturities The amortized cost and fair values of Held-to-maturity debt securities and the fair values of Available-for-sale debt securities at March 31, 2023 by contractual maturity are shown below. Expected maturities may be shorter than contractual maturities because issuers of debt securities may have the right to call or prepay obligations with or without penalties. Debt securities not due at a single maturity date and securities embedded with call or prepayment options, such as mortgage-backed securities, are included in the table below based on their contractual maturities. Held-to-maturity debt securities Available-for-sale debt securities Amortized cost Fair value Fair value (in millions) Due in one year or less ¥ 602,851 ¥ 604,679 ¥ 22,126,650 Due from one year to five years 9,953,844 9,976,471 7,917,008 Due from five years to ten years 6,143,527 6,101,314 2,280,186 Due after ten years 4,819,859 4,703,692 3,416,958 Total ¥ 21,520,081 ¥ 21,386,156 ¥ 35,740,802 Realized Gains and Losses For the fiscal years ended March 31, 2021, 2022 and 2023, gross realized gains on sales of Available-for-sale debt securities were ¥42,123 million, ¥85,525 million and ¥107,238 million, respectively, and gross realized losses on sales of Available-for-sale debt securities were ¥48,606 million, ¥36,698 million and ¥169,686 million, respectively. Impairment Losses on Investment Securities For the fiscal year ended March 31, 2021, impairment losses on Available-for-sale debt securities, which mainly comprised of corporate bonds, were included in Investment securities gains (losses)—net in the accompanying consolidated statements of operations and were not material. For the fiscal years ended March 31, 2022 and 2023, impairment losses on Available-for-sale debt securities of ¥47,281 million and ¥359,330 million were included in Investment securities gains (losses)—net in the accompanying consolidated statements of operations. These were mainly the impairment losses on the Available-for-sale debt securities held by MUFG Union Bank, which were reclassified as held for sale, and included in Other assets in the accompanying consolidated balance sheets at March 31, 2022, and then sold on December 1, 2022. For the fiscal years ended March 31, 2021, 2022 and 2023, the MUFG Group’s Held-to-maturity debt securities were explicitly or implicitly guaranteed by Japanese or U.S. government entities or agencies and had a long history of no credit losses or were rated investment grade. Therefore, no credit losses were expected on these securities. Gross Unrealized Losses and Fair Value The following tables show the gross unrealized losses and fair value of Available-for-sale debt securities at March 31, 2022 and 2023 by length of time that individual securities in each category have been in a continuous loss position: Less than 12 months 12 months or more Total At March 31, 2022: Fair value Gross unrealized losses Fair value Gross unrealized losses Fair value Gross unrealized losses Number of securities (in millions, except number of securities) Available-for-sale debt securities: Japanese national government and Japanese government agency bonds ¥ 22,998,960 ¥ 126,516 ¥ 353,932 ¥ 5,995 ¥ 23,352,892 ¥ 132,511 486 Japanese prefectural and municipal bonds 2,430,603 14,864 31,139 123 2,461,742 14,987 926 Foreign government and official institution bonds 1,376,267 31,470 167,446 17,570 1,543,713 49,040 87 Corporate bonds 427,739 925 94,364 148 522,103 1,073 173 Residential mortgage-backed securities 178,857 58 391,265 590 570,122 648 12 Asset-backed securities 115,695 222 — — 115,695 222 12 Other debt securities 44,128 3,526 1,089 7 45,217 3,533 4 Commercial paper 367,043 19 — — 367,043 19 30 Total ¥ 27,939,292 ¥ 177,600 ¥ 1,039,235 ¥ 24,433 ¥ 28,978,527 ¥ 202,033 1,730 Less than 12 months 12 months or more Total At March 31, 2023: Fair value Gross unrealized losses Fair value Gross unrealized losses Fair value Gross unrealized losses Number of securities (in millions, except number of securities) Available-for-sale debt securities: Japanese national government and Japanese government agency bonds ¥ 7,644,337 ¥ 8,066 ¥ 2,105,210 ¥ 115,703 ¥ 9,749,547 ¥ 123,769 438 Japanese prefectural and municipal bonds 962,234 1,781 711,896 14,091 1,674,130 15,872 723 Foreign government and official institution bonds 858,970 18,677 1,436,798 89,695 2,295,768 108,372 118 Corporate bonds 331,411 1,800 249,088 1,177 580,499 2,977 256 Residential mortgage-backed securities 166,778 5 522,774 436 689,552 441 15 Asset-backed securities 310,388 4,170 39,806 194 350,194 4,364 32 Other debt securities 48,804 1,266 47,886 5,576 96,690 6,842 28 Total ¥ 10,322,922 ¥ 35,765 ¥ 5,113,458 ¥ 226,872 ¥ 15,436,380 ¥ 262,637 1,610 Evaluating Available-for-sale debt securities for Impairment losses The following describes the nature of the MUFG Group’s Available-for-sale debt securities and the conclusions reached in determining whether impairment losses exist. Japanese national government and Japanese government agency bonds, Japanese prefectural and municipal bonds, Foreign government and official institution bonds As of March 31, 2023, unrealized losses associated with these securities were deemed to be attributable to changes in market interest rates rather than a deterioration in the creditworthiness of the underlying obligor. Based on a consideration of factors, including cash flow analysis, the MUFG Group expects to recover the entire amortized cost basis of these securities. Accordingly, no credit loss was identified as of March 31, 2023 and no impairment loss has been recorded. Corporate bonds As of March 31, 2023, unrealized losses associated with corporate bonds were primarily related to private placement bonds issued by Japanese non-public companies. The credit loss component recognized in earnings is identified as the amount of principal cash flows not expected to be received over the remaining terms of the bonds as estimated using the MUFG Group’s cash flow projections. The key assumptions include probability of default based on credit ratings of the bond issuers and loss given default. Residential mortgage-backed securities As of March 31, 2023, unrealized losses on these securities were primarily driven by securities guaranteed by a U.S. government agency or a government-sponsored agency which are collateralized by residential mortgage loans. Unrealized losses mainly resulted from changes in interest rates and not from changes in credit quality. The MUFG Group determined through analysis that no credit loss was identified on such securities as of March 31, 2023 because the strength of the issuers’ guarantees through direct obligations or support from the U.S. government is expected to be sufficient to recover the entire amortized cost basis of these securities. Asset-backed securities As of March 31, 2023, unrealized losses on these securities were primarily driven by certain CLOs, highly illiquid securities for which fair values are difficult to determine. Unrealized losses arise from widening credit spreads, deterioration of the credit quality of the underlying collateral, uncertainty regarding the valuation of such securities and the market’s view of the performance of the fund managers. When the fair value of a security is lower than its amortized cost or when any security is subject to a deterioration in credit rating, the MUFG Group undertakes a cash flow analysis of the underlying collateral to estimate the credit loss and confirms the intent and ability to hold these securities until recovery. Based on the analysis performed, no credit loss was identified as of March 31, 2023 and no impairment loss has been recorded. Equity Securities The following table presents net realized gains (losses) on sales of equity securities, and net unrealized gains (losses) on equity securities still held at March 31, 2021, 2022 and 2023: Fiscal years ended March 31, 2021 2022 2023 (in millions) Net gains (losses) recognized during the period (1) ¥ 1,467,763 ¥ (125,271) ¥ 104,023 Less: Net gains (losses) recognized during the period on equity securities sold during the period 47,775 (38,042) 18,313 Net unrealized gains (losses) recognized during the reporting period still held at the reporting date ¥ 1,419,988 ¥ (87,229) ¥ 85,710 Note: (1) Included in Investment securities gains (losses)—net. Measurement Alternative of Equity Securities The following table presents the carrying value of nonmarketable equity securities that are measured at cost minus impairment, if any, plus or minus changes resulting from observable price changes (“measurement alternative”), held at March 31, 2022 and 2023: 2022 2023 (in millions) Measurement alternative balance ¥ 310,570 ¥ 381,928 The related adjustments for these securities for the fiscal years ended March 31, 2021, 2022 and 2023 were as follows: Fiscal years ended March 31, 2021 2022 2023 (in millions) Measurement alternative impairment losses (1)(4) ¥ (5,188) ¥ (4,299) ¥ (8,230) Measurement alternative downward changes for observable prices (1)(2)(3)(5) ¥ — ¥ — ¥ (440) Measurement alternative upward changes for observable prices (1)(2)(3)(6) ¥ 21,710 ¥ 3,067 ¥ 5,090 Notes: (1) Included in Investment securities gains (losses)—net. (2) Under the measurement alternative, nonmarketable equity securities are carried at cost plus or minus changes resulting from observable prices in orderly transactions for the identical or a similar investment of the same issuer. (3) The MUFG Group applied measurement alternative downward or upward changes to certain nonmarketable equity securities, resulting from observable prices in orderly transactions, such as partial repurchase and transactions by other entities. (4) The cumulative impairment losses at March 31, 2022 and 2023 were ¥12,354 million and ¥20,151 million respectively. (5) The cumulative downward changes for observable prices at March 31, 2022 and 2023 were ¥954 million and ¥1,393 million, respectively.

Loans and Allowance for Credit

Loans and Allowance for Credit Losses	12 Months Ended
	Mar. 31, 2023
Receivables [Abstract]
Loans and Allowance for Credit Losses	LOANS AND ALLOWANCE FOR CREDIT LOSSES The MUFG Group classifies its loan portfolio into the following portfolio segments—Commercial, Residential, Card, MUAH, Krungsri, and Other based on the grouping used by the MUFG Group to determine the allowance for credit losses. The MUFG Group further classifies the Commercial segment into classes based on initial measurement attributes, risk characteristics, and its method of monitoring and assessing credit risk. See Note 1 for further information. However, for the fiscal year ended March 2023, the MUA H segment is included in the Other segment in the respective tables, because its importance as a segment declined as a result of the sale of MUFG Union Bank and an internal reorganization within the MUFG Group. The reorganization involved the transfer of assets, including loans of ¥2,614,535 million from the MUAH segment to the Commercial segment on November 14, 2022. See Note 2 for further information. Total Outstanding Loans and Past Due Analysis The table below presents total outstanding loans and past due analysis by class at March 31, 2022 and 2023. Past Due At March 31, 2022: 1-3 months Greater Total Current Loans Held for Sale (1) Total Past Due 90 Days and (in millions) Commercial Domestic ¥ 12,556 ¥ 9,138 ¥ 21,694 ¥ 53,953,767 ¥ 69,257 ¥ 54,044,718 ¥ 3,260 Foreign 17,405 10,598 28,003 34,578,265 374,011 34,980,279 — Residential 32,078 13,598 45,676 13,255,829 — 13,301,505 3,360 Card 10,250 26,818 37,068 427,198 — 464,266 — MUAH 625 — 625 2,741,503 70,841 2,812,969 — Krungsri 115,636 126,494 242,130 6,580,635 — 6,822,765 — Other 21,729 21,152 42,881 1,002,240 — 1,045,121 — Total ¥ 210,279 ¥ 207,798 ¥ 418,077 ¥ 112,539,437 ¥ 514,109 ¥ 113,471,623 ¥ 6,620 Unearned income, unamortized premiums—net and deferred loan fees—net (322,230) Total ¥ 113,149,393 Past Due At March 31, 2023: 1-3 months Greater Total Current Loans Total Past Due 90 Days and Accruing (in millions) Commercial Domestic ¥ 6,599 ¥ 12,485 ¥ 19,084 ¥ 55,519,315 ¥ 87,659 ¥ 55,626,058 ¥ 2,652 Foreign 8,818 33,203 42,021 41,268,228 879,423 42,189,672 12,158 Residential 32,514 11,496 44,010 12,830,845 — 12,874,855 3,342 Card 14,992 26,587 41,579 431,263 — 472,842 — Krungsri 188,802 136,627 325,429 7,457,206 — 7,782,635 — Other (2) 14,241 20,235 34,476 1,375,934 — 1,410,410 — Total ¥ 265,966 ¥ 240,633 ¥ 506,599 ¥ 118,882,791 ¥ 967,082 ¥ 120,356,472 ¥ 18,152 Unearned income, unamortized premiums—net and deferred loan fees—net (401,012) Total ¥ 119,955,460 Notes: (1) Does not include the loans in transferred business of MUFG Union Bank to U.S. Bancorp, which is included in Other assets in the accompanying consolidated balance sheets at March 31, 2022. See Note 2 for further information. (2) The Other segment in the above table included loans of ¥176,691 million, which was previously included in the MUAH segment, at March 31, 2023. Nonaccrual Loans Originated loans are generally placed on nonaccrual status when substantial doubt exists as to the full and timely collection of either principal or interest, when principal or interest is contractually past due one month or more with respect to loans within all classes of the Commercial segment, three months or more with respect to loans within the Card, MUAH, and Krungsri segments, and six months or more with respect to loans within the Residential segment. See Note 1 for further information. The information on nonaccrual loans by class at March 31, 2022 and 2023, and recognized interest income on nonaccrual loans by class for the fiscal years ended March 31, 2022 and 2023 are shown below: Recorded Loan Balance March 31, 2022: Nonaccrual Loans (1) Nonaccrual Loans Not Requiring an Allowance for Credit Losses (2) Recognized Interest Income (in millions) Commercial Domestic ¥ 633,768 ¥ 109,919 ¥ 6,532 Foreign 224,566 84,837 4,734 Residential 56,175 3,579 811 Card 62,578 — 25 MUAH 15,349 — 77 Krungsri 165,775 2,824 4,076 Other 26,618 7 3,688 Total ¥ 1,184,829 ¥ 201,166 ¥ 19,943 Recorded Loan Balance March 31, 2023: Nonaccrual Loans (1) Nonaccrual Loans Not Requiring an Allowance for Credit Losses (2) Recognized Interest Income (in millions) Commercial Domestic ¥ 401,836 ¥ 99,657 ¥ 5,409 Foreign 246,675 65,242 5,918 Residential 47,910 3,962 1,052 Card 67,159 — 17 Krungsri 211,705 3,286 6,482 Other 29,848 5 3,885 Total ¥ 1,005,133 ¥ 172,152 ¥ 22,763 Notes: (1) Nonaccrual loans in the above table do not include loans held for sale of ¥7,946 million and ¥9,205 million at March 31, 2022 and 2023, respectively. (2) These loans do not require an allowance for credit losses because the recorded loan balance equals, or does not exceed, the present value of expected future cash flows discounted at the loans’ original effective interest rate, or the fair value of the collateral if the loan is a collateral-dependent loan. Troubled Debt Restructurings The following table summarizes the MUFG Group’s TDRs by class for the fiscal years ended March 31, 2021, 2022 and 2023: 2021 2022 Troubled Debt Restructurings Pre- Modification Outstanding Recorded Investment Post- Modification Outstanding Recorded Investment Pre- Modification Outstanding Recorded Investment Post- Modification Outstanding Recorded Investment (in millions) Commercial (1)(3) Domestic ¥ 39,282 ¥ 39,282 ¥ 168,348 ¥ 167,342 Foreign 33,839 33,839 16,144 16,144 Residential (1)(3) 18,121 18,121 22,484 22,484 Card (2)(3) 20,857 19,737 20,937 19,824 MUAH (2)(3) 22,801 22,763 11,384 11,384 Krungsri (2)(3) 18,548 18,548 14,869 14,869 Other (2) 24,968 24,956 11,403 11,403 Total ¥ 178,416 ¥ 177,246 ¥ 265,569 ¥ 263,450 2021 2022 Troubled Debt Restructurings Recorded Investment (in millions) Commercial (1)(3) Domestic ¥ 16,179 ¥ 12,020 Foreign 9,861 13,180 Residential (1)(3) 157 203 Card (2)(3) 2,733 2,746 MUAH (2)(3) 3,437 — Krungsri (2)(3) 6,226 5,657 Other (2) 857 4,715 Total ¥ 39,450 ¥ 38,521 Notes: (1) TDRs for the Commercial and Residential segments include accruing loans, and do not include nonaccrual loans. (2) TDRs for the Card, MUAH, Krungsri and Other segments include accrual and nonaccrual loans. (3) For the fiscal year ended March 31, 2021, extension of the stated maturity date of loans was the primary concession type in the Commercial, Residential and Krungsri segments, reduction in the stated rate was the primary concession type in the Card segment and forbearance was the primary concession type in the MUAH segment. For the fiscal year ended March 31, 2022, extension of the stated maturity date of loans was the primary concession type in the Commercial, Residential and Krungsri segments, reduction in the stated rate was the primary concession type in the Card segment and forbearance was the primary concession type in the MUAH segment. 2023 Troubled Debt Restructurings Pre- Modification Outstanding Recorded Investment Post- Modification Outstanding Recorded Investment (in millions) Commercial (1)(3) Domestic ¥ 68,477 ¥ 68,477 Foreign 35,319 35,319 Residential (1)(3) 15,291 15,291 Card (2)(3) 22,355 21,407 Krungsri (2)(3) 94,790 94,790 Other (2) 21,141 21,141 Total ¥ 257,373 ¥ 256,425 2023 Troubled Debt Restructurings Recorded Investment (in millions) Commercial (1)(3) Domestic ¥ 8,123 Foreign 11,945 Residential (1)(3) 116 Card (2)(3) 2,783 Krungsri (2)(3) 5,289 Other (2) 1,569 Total ¥ 29,825 Notes: (1) TDRs for the Commercial and Residential segments include accruing loans, and do not include nonaccrual loans. (2) TDRs for the Card, Krungsri and Other segments include accrual and nonaccrual loans. (3) For the fiscal year ended March 31, 2023, extension of the stated maturity date of loans was the primary concession type in the Commercial, Residential and Krungsri segments and reduction in the stated rate was the primary concession type in the Card segment. A modification of terms of a loan under a TDR mainly involves: (i) a reduction in the stated interest rate applicable to the loan, (ii) an extension of the stated maturity date of the loan, (iii) a partial forgiveness of the principal of the loan, or (iv) a combination of all of these. The amount of pre-modification outstanding recorded investment and post-modification outstanding recorded investment may differ due to write-offs made as part of the concession. The impact of write-offs associated with TDRs on the MUFG Group’s results of operations for the fiscal years ended March 31, 2021, 2022 and 2023 was not material. TDRs for the Commercial and Residential segments in the above tables include accruing loans, and do not include nonaccrual loans. Once a loan is classified as a nonaccrual loan, a modification would have little likelihood of resulting in the recovery of the loan in view of the severity of the financial difficulty of the borrower. Therefore, even if a nonaccrual loan is modified, the loan continues to be classified as a nonaccrual loan. The vast majority of modifications to nonaccrual loans are temporary extensions of the maturity dates, typically for periods up to 90 days, and continually made as the borrower is unable to repay or refinance the loan at the extended maturity. Accordingly, the impact of such TDRs on the outstanding recorded investment is immaterial, and the vast majority of nonaccrual TDRs have subsequently defaulted. TDRs that subsequently defaulted in the Commercial and Residential segments in the above tables include those accruing loans that became past due one month or more within the Commercial segment and six months or more within the Residential segment, and those accruing loans reclassified to nonaccrual loans due to financial difficulties even without delinquencies. This is because classification as a nonaccrual loan is regarded as default under the MUFG Group’s credit policy. Also, the MUFG Group defines default as payment default for the purpose of the disclosure. In regards to the Card, MUAH, Krungsri and Other segments, the TDRs in the above tables represent nonaccrual and accruing loans, and the defaulted loans in the above table represent nonaccrual and accruing loans that became past due one month or more within the Card segment, 60 days or more within the MUAH segment, and six months or more within the Krungsri segment. Historical payment defaults are one of the factors considered when projecting future cash flows in determining the allowance for credit losses for each segment. The MUFG Group provided commitments to extend credit to customers with TDRs. The amounts of such commitments were ¥132,456 million and ¥101,339 million at March 31, 2022 and 2023, respectively. See Note 24 for further discussion of commitments to extend credit. In the Krungsri segment, TDR accounting was suspended for loan modifications, where COVID-19 related short-term modifications (i.e., six months or less) were granted to loans that were current as of the loan modification date, based on interagency statements issued by the U.S. federal bank regulatory agencies. These loan modifications included payment deferrals and reductions in stated rate, and the related borrowers’ past due and nonaccrual status will not be impacted during the deferral period. Interest income will continue to be recognized over the contractual life of the loan. Credit Quality Indicator Credit quality indicators of loans and fiscal year of origination by class at March 31, 2022 and 2023 are shown below: Term Loans Amortized Cost Basis by Origination Year Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Loans Amortized Cost Basis Total (1) At March 31, 2022: 2021 2020 2019 2018 2017 Prior (in millions) Commercial: ¥ 27,445,726 ¥ 10,850,943 ¥ 7,634,337 ¥ 6,509,048 ¥ 3,924,194 ¥ 8,827,987 ¥ 23,380,258 ¥ 9,236 ¥ 88,581,729 Domestic 19,038,698 7,937,529 5,003,439 4,499,174 2,817,819 6,639,931 8,038,871 — 53,975,461 Normal 18,756,933 7,646,272 4,669,784 4,335,640 2,698,956 6,205,070 7,686,772 — 51,999,427 Close Watch 257,276 266,311 167,387 150,834 104,047 307,367 306,193 — 1,559,415 Likely to become Bankrupt or Legally/Virtually Bankrupt 24,489 24,946 166,268 12,700 14,816 127,494 45,906 — 416,619 Foreign 8,407,028 2,913,414 2,630,898 2,009,874 1,106,375 2,188,056 15,341,387 9,236 34,606,268 Normal 8,250,729 2,814,362 2,501,594 1,881,532 1,031,105 2,031,243 15,089,995 1,912 33,602,472 Close Watch 149,502 90,355 73,253 110,170 36,274 93,622 223,203 7,324 783,703 Likely to become Bankrupt or Legally/Virtually Bankrupt 6,797 8,697 56,051 18,172 38,996 63,191 28,189 — 220,093 Residential ¥ 782,446 ¥ 641,706 ¥ 976,736 ¥ 866,282 ¥ 900,959 ¥ 9,104,691 ¥ 28,685 ¥ — ¥ 13,301,505 Accrual 782,314 641,499 976,162 865,761 900,120 9,054,326 26,460 — 13,246,642 Nonaccrual 132 207 574 521 839 50,365 2,225 — 54,863 Card ¥ 19 ¥ 106 ¥ 182 ¥ 175 ¥ 276 ¥ 437 ¥ 400,552 ¥ 62,519 ¥ 464,266 Accrual 1 8 8 9 13 41 387,648 13,960 401,688 Nonaccrual 18 98 174 166 263 396 12,904 48,559 62,578 MUAH ¥ 364,236 ¥ 306,134 ¥ 147,821 ¥ 62,455 ¥ 50,264 ¥ 122,149 ¥ 1,689,069 ¥ — ¥ 2,742,128 Credit Quality Based on Internal Credit Ratings Pass 357,334 298,658 126,083 48,653 43,938 117,778 1,642,946 — 2,635,390 Special Mention 3,106 — 20,013 2,415 5,981 805 33,471 — 65,791 Classified 3,796 7,476 1,725 11,387 345 3,566 12,652 — 40,947 Krungsri ¥ 1,350,265 ¥ 964,094 ¥ 901,955 ¥ 680,090 ¥ 329,847 ¥ 481,981 ¥ 2,099,727 ¥ 14,806 ¥ 6,822,765 Performing 1,297,054 891,374 788,828 573,840 270,783 363,905 1,961,481 — 6,147,265 Under-Performing 42,326 58,084 90,519 80,841 45,982 78,690 113,283 — 509,725 Non-Performing 10,885 14,636 22,608 25,409 13,082 39,386 24,963 14,806 165,775 Other ¥ 400,482 ¥ 143,336 ¥ 85,496 ¥ 40,445 ¥ 35,346 ¥ — ¥ 340,016 ¥ — ¥ 1,045,121 Accrual 398,744 136,317 83,278 38,609 32,934 — 328,621 — 1,018,503 Nonaccrual 1,738 7,019 2,218 1,836 2,412 — 11,395 — 26,618 Term Loans Amortized Cost Basis by Origination Year Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Loans Amortized Cost Basis Total (1) At March 31, 2023: 2022 2021 2020 2019 2018 Prior (in millions) Commercial: ¥ 32,957,651 ¥ 10,100,587 ¥ 8,626,319 ¥ 5,653,421 ¥ 4,385,807 ¥ 9,366,641 ¥ 25,743,172 ¥ 15,050 ¥ 96,848,648 Domestic 20,132,474 6,099,692 6,675,895 4,002,329 3,214,528 7,406,590 8,006,891 — 55,538,399 Normal 19,867,845 5,957,659 6,472,135 3,823,755 3,126,146 6,722,981 7,722,379 — 53,692,900 Close Watch 222,202 124,499 172,270 114,534 74,635 567,514 262,686 — 1,538,340 Likely to become Bankrupt or Legally/Virtually Bankrupt 42,427 17,534 31,490 64,040 13,747 116,095 21,826 — 307,159 Foreign 12,825,177 4,000,895 1,950,424 1,651,092 1,171,279 1,960,051 17,736,281 15,050 41,310,249 Normal 12,508,547 3,931,278 1,857,934 1,577,120 1,083,934 1,824,977 17,540,822 15,050 40,339,662 Close Watch 262,388 34,656 60,637 50,210 71,966 79,450 174,436 — 733,743 Likely to become Bankrupt or Legally/Virtually Bankrupt 54,242 34,961 31,853 23,762 15,379 55,624 21,023 — 236,844 Residential ¥ 688,000 ¥ 747,161 ¥ 607,237 ¥ 919,359 ¥ 811,469 ¥ 9,077,669 ¥ 23,960 ¥ — ¥ 12,874,855 Accrual 687,800 747,121 607,047 918,781 810,933 9,034,589 22,093 — 12,828,364 Nonaccrual 200 40 190 578 536 43,080 1,867 — 46,491 Card ¥ 12 ¥ 147 ¥ 240 ¥ 239 ¥ 181 ¥ 587 ¥ 403,687 ¥ 67,749 ¥ 472,842 Accrual 1 7 10 8 9 37 391,237 14,374 405,683 Nonaccrual 11 140 230 231 172 550 12,450 53,375 67,159 Krungsri ¥ 1,824,628 ¥ 1,046,959 ¥ 654,933 ¥ 692,616 ¥ 515,731 ¥ 605,053 ¥ 2,427,923 ¥ 14,792 ¥ 7,782,635 Performing 1,689,034 956,470 570,865 553,616 406,258 459,322 2,292,418 — 6,927,983 Under-Performing 108,770 66,555 67,504 111,435 85,928 98,103 104,652 — 642,947 Non-Performing 26,824 23,934 16,564 27,565 23,545 47,628 30,853 14,792 211,705 Other ¥ 551,560 ¥ 190,786 ¥ 108,148 ¥ 48,867 ¥ 19,875 ¥ 80,252 ¥ 410,922 ¥ — ¥ 1,410,410 Accrual 549,274 187,638 106,522 47,235 17,832 75,726 396,334 — 1,380,561 Nonaccrual 2,286 3,148 1,626 1,632 2,043 4,526 14,588 — 29,849 Note: (1) Total loans in the above table do not include loans held for sale, and represent balances without adjustments in relation to unearned income, unamortized premiums and deferred loan fees. The MUFG Group classifies loans into risk categories based on relevant information about the ability of borrowers to service their debt, including, but not limited to, historical and current financial information, historical and current payment experience, credit documentation, public and non-public information about borrowers and current economic trends as deemed appropriate to each segment. The primary credit quality indicator for loans within all classes of the Commercial segment is the internal credit rating assigned to each borrower based on the MUFG Group’s internal borrower ratings of 1 through 15, with the rating of 1 assigned to a borrower with the highest quality of credit. When assigning a credit rating to a borrower, the MUFG Group evaluates the borrower’s expected debt-service capability based on various information, including financial and operating information of the borrower as well as information on the industry in which the borrower operates, and the borrower’s business profile, management and compliance system. In evaluating a borrower’s debt-service capability, the MUFG Group also conducts an assessment of the level of earnings and an analysis of the borrower’s net worth. Based on the internal borrower rating, loans within the Commercial segment are categorized as Normal (internal borrower ratings of 1 through 9), Close Watch (internal borrower ratings of 10 through 12), and Likely to become Bankrupt or Legally/Virtually Bankrupt (internal borrower ratings of 13 through 15). Loans to borrowers categorized as Normal represent those that are not deemed to have collectibility issues. Loans to borrowers categorized as Close Watch represent those that require close monitoring as the borrower has begun to exhibit elements of potential concern with respect to its business performance and financial condition, the borrower has begun to exhibit elements of serious concern with respect to its business performance and financial condition, including business problems requiring long-term solutions, or the borrower’s loans are TDRs or loans contractually past due 90 days or more for special reasons. Loans to borrowers categorized as Likely to become Bankrupt or Legally/Virtually Bankrupt represent those that have a higher probability of default than those categorized as Close Watch due to serious debt repayment problems with poor progress in achieving restructuring plans, the borrower being considered virtually bankrupt with no prospects for an improvement in business operations, or the borrower being legally bankrupt with no prospects for continued business operations because of non-payment, suspension of business, voluntary liquidation or filing for legal liquidation. The accrual status is a primary credit quality indicator for loans within the Residential segment, the Card segment and the Other segment. The accrual status of these loans is determined based on the number of delinquent payments. See Note 1 for further details of categorization of Accrual and Nonaccrual. Commercial loans within the MUAH segment are categorized as either pass or criticized based on the internal credit rating assigned to each borrower. Criticized credits are those that are internally risk graded as Special Mention, Substandard or Doubtful. Special Mention credits are potentially weak, as the borrower has begun to exhibit deteriorating trends, which, if not corrected, may jeopardize repayment of the loan and result in further downgrade. Classified credits are those that are internally risk graded as Substandard or Doubtful. Substandard credits have well-defined weaknesses, which, if not corrected, could jeopardize the full satisfaction of the debt. A credit classified as Doubtful has critical weaknesses that make full collection improbable on the basis of currently existing facts and conditions. Loans within the Krungsri segment are categorized as Performing, Under-Performing or Non-Performing based on their delinquency status. Loans categorized as Under-Performing generally represent those that have significant increases in credit risk since origination, including, among other things, loans that are 30 days or more past due, and loans categorized as Non-Performing generally represent those that are 90 days or more past due. For the Commercial, Residential and Card segments, credit quality indicators are based on information as of March 31. For the MUAH, Krungsri and Other segments, credit quality indicators are generally based on information as of December 31. Allowance for Credit Losses Changes in the allowance for credit losses by portfolio segment for the fiscal years ended March 31, 2021, 2022 and 2023 are shown below: Fiscal year ended March 31, 2021: Commercial Residential Card MUAH Krungsri Other Total (in millions) Allowance for credit losses: Balance at beginning of fiscal year ¥ 482,275 ¥ 34,746 ¥ 35,180 ¥ 58,995 ¥ 169,626 ¥ 28,718 ¥ 809,540 Effect of adopting new guidance on measurement of credit losses on financial instruments (1) 83,828 49,494 14,262 25,037 118,333 32,750 323,704 Provision for credit losses 235,584 1,385 17,876 90,064 90,167 49,134 484,210 Charge-offs 77,904 2,745 24,564 40,376 93,192 51,725 290,506 Recoveries collected 9,262 13 1,463 4,362 23,415 6,567 45,082 Net charge-offs 68,642 2,732 23,101 36,014 69,777 45,158 245,424 Other (2) 1,532 — — (6,327) (14,953) (3,891) (23,639) Balance at end of fiscal year ¥ 734,577 ¥ 82,893 ¥ 44,217 ¥ 131,755 ¥ 293,396 ¥ 61,553 ¥ 1,348,391 Fiscal year ended March 31, 2022: Commercial Residential Card MUAH Krungsri Other Total (in millions) Allowance for credit losses: Balance at beginning of fiscal year ¥ 734,577 ¥ 82,893 ¥ 44,217 ¥ 131,755 ¥ 293,396 ¥ 61,553 ¥ 1,348,391 Provision for (reversal of) credit losses 236,659 (10,899) 15,473 (101,112) 90,514 47,360 277,995 Charge-offs 57,848 2,121 20,153 19,208 83,474 55,208 238,012 Recoveries collected 11,898 14 1,231 9,532 22,890 13,150 58,715 Net charge-offs 45,950 2,107 18,922 9,676 60,584 42,058 179,297 Other (2) 8,800 — — 9,398 (940) 6,354 23,612 Balance at end of fiscal year ¥ 934,086 ¥ 69,887 ¥ 40,768 ¥ 30,365 ¥ 322,386 ¥ 73,209 ¥ 1,470,701 Fiscal year ended March 31, 2023: Commercial Residential Card Krungsri Other (3) Total (in millions) Allowance for credit losses: Balance at beginning of fiscal year ¥ 934,086 ¥ 69,887 ¥ 40,768 ¥ 322,386 ¥ 103,574 ¥ 1,470,701 Transfer from MUAH to Commercial segment 33,062 (33,062) — Provision for (reversal of) credit losses (113,886) (9,511) 19,236 70,729 41,580 8,148 Charge-offs 158,780 645 18,255 95,489 55,922 329,091 Recoveries collected 18,784 16 720 25,457 24,506 69,483 Net charge-offs 139,996 629 17,535 70,032 31,416 259,608 Other (2) 6,323 — — 34,948 12,386 53,657 Balance at end of fiscal year ¥ 719,589 ¥ 59,747 ¥ 42,469 ¥ 358,031 ¥ 93,062 ¥ 1,272,898 Notes: (1) Effective as of April 1, 2020, the MUFG Group adopted new guidance on measurement of credit losses on financial instruments. (2) Other is principally comprised of gains or losses from foreign exchange translation. (3) For the fiscal year ended March 31, 2023, the beginning balance and the ending balance of the Other segment in the above table includes the allowance for credit losses of ¥30,365 million and ¥3,428 million, respectively, which were previously included in the MUAH segment. Nonperforming loans were actively disposed of by sales during recent years. The allocated allowance for credit losses for such loans was removed from the allowance for credit losses and transferred to the valuation allowance for loans held for sale upon a decision to sell. Net charge-offs in the above table include a decrease from charge-offs in the allowance for credit losses amounting to ¥16.8 billion, ¥0.4 billion and ¥79.9 billion for the fiscal years ended March 31, 2021, 2022 and 2023, respectively, due to loan disposal activity. The MUFG Group sold ¥1,684 billion, ¥2,011 billion and ¥2,879 billion of loans within the Commercial segment during the fiscal years ended March 31, 2021, 2022 and 2023, respectively. The MUFG Group sold ¥586 billion and ¥518 billion of loans within the MUAH segment during the fiscal years ended March 31, 2021 and 2022, respectively. The MUFG Group sold ¥556 billion of loans within the current Other segment, previously included in the MUAH segment, during the fiscal year ended March 31, 2023. Collateral Dependent Loans The MUFG Group uses, as a practical expedient, the fair value of the collateral when recording the net carrying amounts of loans and determining the allowance for credit losses of such loans, for which the repayment is expected to be provided substantially through the operation or sale of the collateral, when the borrower is experiencing financial difficulty based on the assessment as of the reporting date.

Premises and Equipment

Premises and Equipment	12 Months Ended
	Mar. 31, 2023
Property, Plant and Equipment [Abstract]
Premises and Equipment	PREMISES AND EQUIPMENT Premises and equipment at March 31, 2022 and 2023 consisted of the following: 2022 2023 (in millions) Land ¥ 372,710 ¥ 393,932 Buildings 766,945 800,821 Equipment and furniture 497,478 509,828 Leasehold improvements 255,679 255,712 Construction in progress 30,894 34,679 Total 1,923,706 1,994,972 Less accumulated depreciation 1,107,877 1,134,394 Premises and equipment-net ¥ 815,829 ¥ 860,578 Other non-interest expenses

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
	Mar. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	GOODWILL AND OTHER INTANGIBLE ASSETS Goodwill The table below presents the movement in the carrying amount of goodwill by business segment during the fiscal years ended March 31, 2022 and 2023: Global Corporate & Investment Banking Business Group Global Commercial Banking Business Group Asset Management & Investor Services Business Group Global Markets Business Group Total (in millions) Balance at March 31, 2021: Goodwill ¥ 140,099 ¥ 728,644 ¥ 223,301 ¥ 2,300 ¥ 1,094,344 Accumulated impairment losses (1) (63,393) (645,731) (14,368) — (723,492) 76,706 82,913 208,933 2,300 370,852 Foreign currency translation adjustments and other 4,694 7,358 12,493 — 24,545 Balance at March 31, 2022: Goodwill 144,793 736,002 235,794 2,300 1,118,889 Accumulated impairment losses (63,393) (645,731) (14,368) — (723,492) Less: Goodwill, net of accumulated impairment losses in transferred business of MUFG Union Bank (2) (2,415) (89,371) — — (91,786) ¥ 78,985 ¥ 900 ¥ 221,426 ¥ 2,300 ¥ 303,611 Impairment loss — — (33,553) — (33,553) Foreign currency translation adjustments and other 9,683 (900) 17,931 — 26,714 Balance at March 31, 2023: Goodwill (3) 152,236 481,263 253,725 2,300 889,524 Accumulated impairment losses (3) (63,568) (481,263) (47,921) — (592,752) ¥ 88,668 ¥ — ¥ 205,804 ¥ 2,300 ¥ 296,772 Notes: (1) Effective April 1, 2018, the MUFG Group reorganized its business groups. Goodwill originally recognized for Retail Banking Business Group, Corporate Banking Business Group, Trust Assets Business Group and Global Business Group other than MUAH and Krungsri was ¥1,900,019 million, which has been fully impaired before April 1, 2017. As these impairment losses recorded in past before the reorganization of the segment and are irrelevant to the annual impairment test under the new segment, the accumulated impaired loss is not allocated to new business segments after the reorganization of business group. (2) Represents goodwill, net of accumulated impairment losses in transferred business of MUFG Union Bank, which is included in Other assets in the accompanying consolidated balance sheet at March 31, 2022. (3) For the balance at March 31, 2023, the Goodwill and Accumulated impairment losses of the Global Corporate & Investment Banking Business Group and Global Commercial Banking Business Group in the above table exclude the goodwill and accumulated impairment losses previously recorded for MUFG Union Bank, which was sold during the fiscal year ended March 31, 2023. See Note 2 for further information. U.S. GAAP requires to test goodwill for impairment at least annually, or more frequently if events or changes in circumstances indicate that goodwill may be impaired, using a process that compares the carrying amount of a reporting unit with its fair value. An impairment loss is recognized to the extent that the carrying amount of a reporting unit exceeds its fair value, but not exceeding the total amount of goodwill allocated to that reporting unit. For the fiscal year ended March 31, 2021, the MUFG Group recognized ¥147,564 million in impairment of goodwill relating to MUAH reporting unit within the Global Commercial Banking Business Group segment and Global Corporate & Investment Banking Business Group segment. Due largely to increases in observed market discount rates, the fair values of the reporting units were lowered. This led management to believe that the fair values of certain reporting unit was below carrying value. As a result, the fair value of the reporting unit was measured for the quantitative goodwill impairment test, and led to impairment of goodwill with the fair value fallen below the carrying amount of the reporting unit. The MUFG Group estimated the fair value of its reporting units using a combination of the income and the market approaches. This goodwill impairment includes the impact of an intervening event due to the economic environment triggered by COVID-19 for the three-month period ended March 31, 2020. For the fiscal year ended March 31, 2023, the MUFG Group recognized ¥33,553 million of impairment of goodwill relating to the First Sentier Investors reporting unit within the Asset Management & Investor Services Business Group segment. Due largely to market volatility and a decline in the equity markets, the portfolio balance of assets under management decreased, which resulted in a decrease in the reporting unit’s cash flow projections. As a result, the fair value of the reporting unit was measured on December 31, 2022 for the quantitative goodwill impairment test, and led to an impairment of goodwill as the fair value had fallen below the carrying amount of the reporting unit. The income approach estimates the fair value of the reporting unit by discounting management’s projections of the reporting unit’s cash flows, including a terminal value to estimate the fair value of cash flows beyond the final year of projected results, using a discount rate derived from the capital asset pricing model. The MUFG Group consolidates certain subsidiaries, including MUAH, based on financial information for the year ended December 31 as this date and MUFG’s fiscal year which ends on March 31 have been treated as coterminous. Other Intangible Assets The table below presents the gross carrying amount, accumulated amortization and net carrying amount, in total and by major class of other intangible assets at March 31, 2022 and 2023: 2022 2023 Gross carrying amount Accumulated amortization Net carrying amount Gross carrying amount Accumulated amortization Net carrying amount (in millions) Intangible assets subject to amortization: Software ¥ 3,169,332 ¥ 2,380,861 ¥ 788,471 ¥ 3,440,220 ¥ 2,606,923 ¥ 833,297 Customer relationships 528,969 282,324 246,645 552,204 319,293 232,911 Core deposit intangibles 114,059 58,972 55,087 119,555 69,379 50,176 Trade names 76,858 36,846 40,012 79,861 41,090 38,771 Other 15,194 4,859 10,335 17,861 6,751 11,110 Total ¥ 3,904,412 ¥ 2,763,862 1,140,550 ¥ 4,209,701 ¥ 3,043,436 1,166,265 Intangible assets not subject to amortization: Other 8,051 7,958 Total ¥ 1,148,601 ¥ 1,174,223 Intangible assets subject to amortization acquired during the fiscal year ended March 31, 2022 amounted to ¥262,826 million, which primarily consisted of ¥262,645 million of software. The weighted average amortization periods for these assets are 6 years. There is no significant residual value estimated for these assets. Intangible assets not subject to amortization acquired during the fiscal year ended March 31, 2022 amounted to ¥3,498 million. Intangible assets subject to amortization acquired during the fiscal year ended March 31, 2023 amounted to ¥273,108 million, which primarily consisted of ¥272,410 million of software. The weighted average amortization periods for these assets are 5 years. There is no significant residual value estimated for these assets. Intangible assets not subject to amortization acquired during the fiscal year ended March 31, 2023 amounted to ¥1,479 million. For the fiscal years ended March 31, 2021, 2022 and 2023, the MUFG Group recognized ¥21,680 million, ¥33,301 million and ¥5,151 million, respectively, of impairment losses for intangible assets whose carrying amounts exceeded their fair value. In computing the amount of impairment losses, fair value was determined primarily based on the present value of expected future cash flows, the estimated value based on appraisals, or market prices. The estimated aggregate amortization expense for intangible assets for the next five fiscal years is as follows: (in millions) Fiscal year ending March 31: 2024 ¥ 281,137 2025 236,575 2026 193,844 2027 146,394 2028 111,124

Lease Transactions

Lease Transactions	12 Months Ended
	Mar. 31, 2023
Leases [Abstract]
Lease Transactions	LEASE TRANSACTIONS Lease transactions as a lessee Right-of-use assets of finance leases, which are principally related to data processing equipment and included in Premises and equipment Long-term debt Right-of-use assets of operating leases, which are principally related to office space and equipment are included in Other assets Other liabilities For the fiscal years ended March 31, 2022 and 2023, the MUFG Group recognized ¥20,830 million and ¥15,720 million, respectively, of impairment losses for Right-of-use assets of operating leases, where recovery of the carrying amount is doubtful. The losses are included in Other non-interest expenses. The discount rates used in determining the present value of leases are the MUFG Group’s incremental borrowing rate, developed based upon each lease’s term and currency of payment. The lease term includes options to extend or terminate the lease when it is reasonably certain that the MUFG Group will exercise that option. The MUFG Group has elected to exclude leases with original terms of less than one year from the operating lease right-of-use assets and lease liabilities. The MUFG Group’s lease arrangements that have not yet commenced as of March 31, 2023 are not material. Variable lease costs did not have a material impact on the MUFG Group’s results of operations. The following table presents profit or loss of lease transactions as a lessee for the fiscal years ended March 31, 2021, 2022 and 2023: 2021 2022 2023 (in millions) Finance lease cost: Amortization of right-of-use assets ¥ 4,971 ¥ 4,816 ¥ 5,672 Interest on lease liabilities 240 198 208 Operating lease cost 91,276 81,206 67,393 The following table presents information of lease transactions as a lessee for the fiscal years ended March 31, 2022 and 2023: 2022 2023 (in millions, except years and percentages) Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from finance leases ¥ 262 ¥ 282 Operating cash flows from operating leases 107,047 101,549 Financing cash flows from finance leases 7,426 8,124 Right-of-use assets obtained in exchange for new finance lease liabilities 4,055 11,066 Right-of-use assets obtained in exchange for new operating lease liabilities 48,095 35,678 Weighted-average remaining lease term: Finance leases 3.6 years 3.5 years Operating leases 8.0 years 7.6 years Weighted-average discount rate: Finance leases 0.77 % 0.84 % Operating leases 0.76 % 0.90 % Maturities of lease liabilities as of March 31, 2023 are as follows: Finance leases Operating leases (in millions) 2024 ¥ 7,718 ¥ 85,292 2025 5,539 62,184 2026 2,994 44,667 2027 1,991 30,870 2028 1,004 26,836 2029 and thereafter 642 106,453 Total undiscounted cash flows 19,888 356,302 Difference between undiscounted and discounted cash flows (418) (18,911) Amount on balance sheet ¥ 19,470 ¥ 337,391 Lease transactions as a lessor As part of its financing activities, the MUFG Group enters into leasing arrangements with customers. The MUFG Group’s leasing operations are conducted through leasing subsidiaries and consist principally of various types of data processing equipment, office equipment and transportation equipment. Sales type and direct financing lease are presented in loans. In certain case, the MUFG Group requests lessees to deposit in advance an amount nearly equal or equal to the residual value of leased assets. The following table presents profit or loss of lease transactions as a lessor for the fiscal years ended March 31, 2021, 2022 and 2023: 2021 2022 2023 (in millions) Sales type and direct financing leases: Finance income on net investment ¥ 122,810 ¥ 116,430 ¥ 127,724 Operating leases: Lease income 3,663 4,202 6,978 Total ¥ 126,473 ¥ 120,632 ¥ 134,702 Finance income on net investment is included in Interest income—Loans, including fees in the consolidated statements of operations. Lease income from operating lease transactions is included in Other non-interest income in the consolidated statements of operations. The following table presents the components of sales type and direct financing leases transactions as of March 31, 2022 and 2023: 2022 2023 (in millions) Lease receivables (undiscounted) ¥ 1,855,125 ¥ 2,046,277 Adjustments: Discounted unguaranteed residual value 12,439 10,278 Initial direct cost on sales type and direct financing leases 27,695 32,780 Deferred selling profit (306,316) (350,553) Net investment in sales type and direct financing leases ¥ 1,588,943 ¥ 1,738,782 The following table presents maturity of the lease payment receivables of sales type and direct financing lease transactions as of March 31, 2023: Lease receivables (in millions) 2024 ¥ 507,241 2025 466,812 2026 387,246 2027 274,201 2028 205,295 2029 and thereafter 205,482 Total undiscounted cash flows 2,046,277 Difference between undiscounted cash flows and the lease receivables recognized on balance sheet (307,495) Amount on balance sheet ¥ 1,738,782

Income Taxes

Income Taxes	12 Months Ended
	Mar. 31, 2023
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES Income (Loss) before Income Tax Expense (Benefit) Income (loss) before income tax expense (benefit) by jurisdiction for the fiscal years ended March 31, 2021, 2022 and 2023 was as follows: 2021 2022 2023 (in millions) Domestic income (loss) ¥ 575,101 ¥ (886,921) ¥ (588,227) Foreign income 1,033,241 828,194 1,244,961 Total ¥ 1,608,342 ¥ (58,727) ¥ 656,734 Income Tax Expense (Benefit) The detail of current and deferred income tax expense (benefit) for the fiscal years ended March 31, 2021, 2022 and 2023 was as follows: 2021 2022 2023 (in millions) Current: Domestic ¥ 95,183 ¥ 243,993 ¥ 250,780 Foreign 83,492 112,164 203,409 Total 178,675 356,157 454,189 Deferred: Domestic 310,490 (308,214) (348,997) Foreign (44,217) (62,454) (78,779) Total 266,273 (370,668) (427,776) Income tax expense (benefit) 444,948 (14,511) 26,413 Income tax expense (benefit) reported in Accumulated OCI relating to: Investment securities 1,146 (87,628) (66,401) Debt valuation adjustments (36,792) 10,296 7,858 Derivatives qualifying for cash flow hedges 12,244 (4,968) 1,594 Defined benefit plans 139,883 19,039 (677) Foreign currency translation adjustments (3,368) 96,742 86,576 Total 113,113 33,481 28,950 Total ¥ 558,061 ¥ 18,970 ¥ 55,363 Prior to the fiscal year ended March 31, 2023, the MUFG Group filed tax returns on a consolidated basis for corporate income taxes within Japan, and from the beginning of fiscal year ended March 31, 2023, the MUFG Group applied the Group Tax Sharing System, where the calculation of taxable income or loss is still made based upon the combined profits or losses of the parent company and its wholly-owned domestic subsidiaries, but the tax payments are made by each of these companies. Reconciliation of Effective Income Tax Rate Income taxes in Japan applicable to the MUFG Group are imposed by the national, prefectural and municipal governments, and in the aggregate resulted in a normal effective statutory rate of approximately 30.6%, 30.6%, and 30.6% for the fiscal years ended March 31, 2021, 2022 and 2023, respectively. Foreign subsidiaries are subject to income taxes of the countries in which they operate. A reconciliation of the effective income tax rates reflected in the accompanying consolidated statements of operations to the combined normal effective statutory tax rates for the fiscal years ended March 31, 2021, 2022 and 2023 is as follows: 2021 2022 2023 Combined normal effective statutory tax rate 30.6 % 30.6 % 30.6 % Nondeductible expenses 0.3 (12.0) 0.8 Impairment of goodwill 2.4 — 1.5 Foreign tax credit and payments (0.9) 28.7 (4.7) Lower tax rates applicable to income of subsidiaries (1.0) 30.8 (5.3) Change in valuation allowance (0.9) (90.1) (10.5) Taxation for gain on sale of shares in subsidiary — — 3.4 (1) Nontaxable dividends received (1.9) 85.1 (14.8) Undistributed earnings of subsidiaries — (25.6) (0.3) Tax and interest expense for uncertainty in income taxes (0.1) (10.8) — Noncontrolling interest income 0.1 (0.7) 0.3 Effect of changes in tax laws (0.1) (2.4) 0.6 Expiration of loss carryforward 0.1 (7.0) 0.1 Other—net (0.9) (1.9) 2.3 Effective income tax rate 27.7 % 24.7 % 4.0 % Note: (1) In March 2023, MUAH repurchased a portion of the shares in MUAH held by MUFG and MUFG Bank. The transaction resulted in the realization of a difference between the book value of the shares in MUAH for accounting and tax purposes, resulting in a ¥22,250 million increase in income tax expense and a 3.4 percentage points increase in the effective tax rate for the fiscal year ended March 31, 2023. Deferred Tax Assets and Liabilities Deferred tax assets and liabilities are computed for each tax jurisdiction using currently enacted tax rates applicable to periods when the temporary differences are expected to reverse. The tax effects of the items comprising the MUFG Group’s net deferred tax assets at March 31, 2022 and 2023 were as follows: 2022 2023 (in millions) Deferred tax assets: Allowance for credit losses ¥ 462,303 ¥ 418,732 Operating loss carryforwards 99,566 99,870 Loans 37 561 Accrued liabilities and other 309,017 413,587 Premises and equipment 124,419 119,395 Derivative financial instruments 154,237 303,644 Obligations under operating leases 106,864 88,088 Valuation allowance (184,932) (153,053) Total deferred tax assets 1,071,511 1,290,824 2022 2023 (in millions) Deferred tax liabilities: Investment securities (including trading account assets at fair value under the fair value option) 605,443 379,581 Intangible assets 69,276 65,973 Lease transactions 47,432 12,514 Defined benefit plans 102,998 50,730 Investments in subsidiaries and affiliates 506,829 639,592 Right-of-use assets of operating leases 77,274 64,741 Other 113,335 103,915 Total deferred tax liabilities 1,522,587 1,317,046 Net deferred tax liabilities ¥ (451,076) ¥ (26,222) The valuation allowance was provided primarily against deferred tax assets recorded at MUFG and its subsidiaries with operating loss carryforwards. The valuation allowance is determined to reduce the measurement of deferred tax assets not expected to be realized. Management considers all available evidence, both positive and negative, to determine whether the valuation allowance is necessary based on the weight of that evidence. Management determines the amount of the valuation allowance based on future reversals of existing taxable temporary differences and future taxable income exclusive of reversing temporary differences. Future taxable income is developed from forecasted operating results, based on recent historical trends and approved business plans, the eligible carryforward periods and other relevant factors. For certain subsidiaries where strong negative evidence exists, such as the existence of significant amounts of operating loss carryforwards, cumulative losses and the expiration of unused operating loss carryforwards in recent years, a valuation allowance was recognized against the deferred tax assets as of March 31, 2022 and 2023 to the extent that it is more likely than not that they will not be realized. Income taxes are not provided on undistributed earnings of certain foreign subsidiaries that are considered to be indefinitely reinvested in the operations of such subsidiaries. At March 31, 2022 and 2023, the undistributed earnings of such foreign subsidiaries amounted to approximately ¥108,311 million and ¥66,897 million, respectively. Determination of the amount of unrecognized deferred tax liabilities with respect to these undistributed earnings is not practicable because of the complexity associated with its hypothetical calculation including foreign withholding taxes and foreign tax credits. MUFG has neither the plan nor the intention to dispose of investments in such foreign subsidiaries and, accordingly, does not expect to record capital gains or losses, or otherwise monetize the undistributed earnings of such foreign subsidiaries. Furthermore, under the Japanese tax law, 95% of a dividend received from a foreign company in which a domestic company has held generally at least 25% of the outstanding shares for a continuous period of six months or more ending on the date on which the dividend is declared can be excluded from the domestic company’s taxable income. Therefore, if undistributed earnings of certain foreign subsidiaries are repatriated through dividends, only 5% of the amount of dividends will be included in taxable income. Operating Loss and Tax Credit Carryforwards At March 31, 2023, the MUFG Group had operating loss carryforwards for corporate tax of ¥221,609 million and tax credit carryforwards of ¥57,084 million for tax purposes. Such carryforwards, if not utilized, are scheduled to expire as follows: Operating loss carryforwards Tax credit carryforwards (in millions) Fiscal year ending March 31: 2024 ¥ 5,344 ¥ 649 2025 84,378 146 2026 53,457 145 2027 624 143 2028 3,108 143 2029 636 347 2030 and thereafter 35,173 46,957 No definite expiration date 38,889 8,554 Total ¥ 221,609 ¥ 57,084 Uncertainty in Income Tax The following is a roll-forward of the MUFG Group’s unrecognized tax benefits for the fiscal years ended March 31, 2021, 2022 and 2023: 2021 2022 2023 (in millions) Balance at beginning of fiscal year ¥ 19,249 ¥ 13,829 ¥ 21,794 Gross amount of increases for current year’s tax positions 202 28 451 Gross amount of decreases for current year’s tax positions (1,919) — — Gross amount of increases for prior years’ tax positions 489 6,320 279 Gross amount of decreases for prior years’ tax positions (2,329) (183) (166) Decreases due to lapse of applicable statutes of limitations (116) (8) (116) Foreign exchange translation and other (1,747) 1,808 3,158 Balance at end of fiscal year ¥ 13,829 ¥ 21,794 ¥ 25,400 The MUFG Group classifies interest and penalties, if applicable, related to income taxes as Income tax expense. Accrued interest and penalties (not included in the “unrecognized tax benefits” above) are a component of Other liabilities. The following is a roll-forward of the interest and penalties recognized in the accompanying consolidated financial statements for the fiscal years ended March 31, 2021, 2022 and 2023: 2021 2022 2023 (in millions) Balance at beginning of fiscal year ¥ 2,612 ¥ 2,417 ¥ 2,848 Total interest and penalties in the consolidated statements of operations (398) 156 (1,052) Total cash settlements, foreign exchange translation and other 203 275 371 Balance at end of fiscal year ¥ 2,417 ¥ 2,848 ¥ 2,167 The MUFG Group is subject to ongoing tax examinations by the tax authorities of the various jurisdictions in which it operates. The following are the major tax jurisdictions in which the MUFG Group operates and the status of years under audit or open to examination: Jurisdiction Tax years Japan 2022 and forward United States—Federal 2019 and forward United States—California 2015 and forward Indonesia 2018 and forward

Pledged Assets and Collateral

Pledged Assets and Collateral	12 Months Ended
	Mar. 31, 2023
Financial Instruments Pledged as Collateral [Abstract]
Pledged Assets and Collateral	PLEDGED ASSETS AND COLLATERAL Pledged Assets At March 31, 2023, assets mortgaged, pledged, or otherwise subject to lien were as follows: 2023 (in millions) Trading account securities ¥ 12,699,080 Investment securities 25,666,561 Loans 11,950,542 Other 20,368 Total ¥ 50,336,551 The above pledged assets were classified by type of liabilities to which they related as follows: 2023 (in millions) Deposits ¥ 14,985 Payables under repurchase agreements and securities lending transactions 27,968,380 Other short-term borrowings and long-term debt 22,280,877 Other 72,309 Total ¥ 50,336,551 At March 31, 2023, certain investment securities, principally Japanese national government and Japanese government agency bonds, loans, and other assets with a combined carrying value of ¥19,436,978 million were pledged for acting as a collection agent of public funds, for settlement of exchange at the Bank of Japan and Japanese Banks’ Payment Clearing Network, for derivative transactions and for certain other purposes. The MUFG Group engages in on-balance sheet securitizations. These securitizations of mortgage and apartment loans, which do not qualify for sales treatment, are accounted for as secured borrowings. The amount of loans in the table above represents the carrying amount of these transactions with the carrying amount of the associated liabilities included in Other short-term borrowings and Long-term debt. Under Japanese law, Japanese banks are required to maintain certain reserves on deposit with the Bank of Japan based on the amount of deposit balances and certain other factors. There are similar reserve deposit requirements for foreign offices and subsidiaries engaged in banking businesses in foreign countries. At March 31, 2022 and 2023, the reserve funds required to be maintained by the MUFG Group, which are included in Cash and due from banks and Interest-earning deposits in other banks, were ¥2,991,833 million and ¥2,918,282 million, respectively. Collateral The MUFG Group accepts and provides financial assets as collateral for transactions, principally commercial loans, repurchase agreements and securities lending transactions, call money, and derivatives. Financial assets eligible for such collateral include, among others, marketable equity securities, trade and notes receivable and certificates of deposit (“CDs”). Secured parties, including creditors and counterparties to certain transactions with the MUFG Group, may sell or repledge financial assets provided as collateral. Certain contracts, however, may not be specific about the secured party’s right to sell or repledge collateral under the applicable statutes and, therefore, whether or not the secured party is permitted to sell or repledge collateral would differ depending on the interpretations of specific provisions of the existing statutes, contract or certain market practices. If the MUFG Group determines, based on available information, that a financial asset provided as collateral might not be sold or repledged by the secured parties, such collateral is not separately reported in the accompanying consolidated balance sheets. If a secured party is permitted to sell or repledge financial assets provided as collateral by contract or custom under the existing statutes, the MUFG Group reports such pledged financial assets separately on the face of the accompanying consolidated balance sheets. At March 31, 2023, the MUFG Group pledged ¥35,115 billion of assets that may not be sold or repledged by the secured parties. Certain banking subsidiaries accept collateral for commercial loans and certain banking transactions under a standardized agreement with customers, which provides that these banking subsidiaries may require the customers to provide collateral or guarantees with respect to the loans and other banking transactions. Financial assets pledged as collateral are generally negotiable and transferable instruments, and such negotiability and transferability are authorized by applicable legislation. In principle, Japanese legislation permits these banking subsidiaries to repledge financial assets accepted as collateral unless otherwise prohibited by contract or relevant statutes. Nevertheless, the MUFG Group did not sell or repledge nor does it plan to sell or repledge such collateral accepted in connection with commercial loans before a debtor’s default or other credit events specified in the agreements as it is not customary within the banking industry in Japan to dispose of collateral before a debtor’s default and other specified credit events. Derivative agreements commonly used in the marketplace do not prohibit a secured party’s disposition of financial assets received as collateral, and in resale agreements and securities borrowing transactions, securities accepted as collateral may be sold or repledged by the secured parties. At March 31, 2022 and 2023, the fair value of the collateral accepted by the MUFG Group that is permitted to be sold or repledged was ¥31,167 billion and ¥32,111 billion, respectively, of which ¥23,699 billion and ¥24,063 billion, respectively, was sold or repledged.

Deposits

Deposits	12 Months Ended
	Mar. 31, 2023
Deposits [Abstract]
Deposits	DEPOSITS At March 31, 2022 and 2023, the aggregate amount of time deposit accounts (including CDs) in denominations that meet or exceed the insured limit were ¥54,819,050 million and ¥60,245,700 million, respectively. These time deposits included domestic time deposits in denominations that meet or exceed the limit stipulated by the Deposit Insurance Act in Japan, which is ¥10 million, and foreign time deposits in denominations that meet or exceed any country-specific insurance fund limit. The maturity information at March 31, 2023 for domestic and foreign time deposits, including CDs, is summarized as follows: Domestic Foreign (in millions) Due in one year or less ¥ 31,966,328 ¥ 29,492,912 Due after one year through two years 4,400,809 504,083 Due after two years through three years 2,327,682 170,605 Due after three years through four years 454,931 99,234 Due after four years through five years 448,420 40,959 Due after five years 706,729 32,825 Total ¥ 40,304,899 ¥ 30,340,618

Call Money and Funds Purchased

Call Money and Funds Purchased	12 Months Ended
	Mar. 31, 2023
Call Money And Funds Purchased [Abstract]
Call Money and Funds Purchased	CALL MONEY AND FUNDS PURCHASED A summary of funds transactions for the fiscal years ended March 31, 2022 and 2023 is as follows: 2022 2023 (in millions, except percentages and days) Outstanding at end of fiscal year: Amount ¥ 2,416,313 ¥ 3,437,614 Principal range of maturities 1 day to 30 days 1 day to 30 days Weighted average interest rate 0.06 % 0.01 %

Due to Trust Account, Short-ter

Due to Trust Account, Short-term Borrowings and Long-term Debt	12 Months Ended
	Mar. 31, 2023
Debt Disclosure [Abstract]
Due to Trust Account, Short-term Borrowings and Long-term Debt	DUE TO TRUST ACCOUNT, SHORT-TERM BORROWINGS AND LONG-TERM DEBT Mitsubishi UFJ Trust and Banking holds assets on behalf of its customers in an agent, fiduciary or trust capacity. Such trust account assets are not the MUFG Group’s proprietary assets and are managed and accounted for separately. However, excess cash funds of individual trust accounts are often placed with Mitsubishi UFJ Trust and Banking which manages the funds together with its own funds in its proprietary account. Due to trust account reflects a temporary placement of the excess funds from individual trust accounts and, in view of the MUFG Group’s funding, due to trust account is similar to short-term funding, including demand deposits and other overnight funds purchased. The balance changes in response to the day-to-day changes in the excess funds placed by the trust accounts. A summary of due to trust account transactions at March 31, 2022 and 2023 is as follows: 2022 2023 (in millions, except percentages) Amount outstanding at end of fiscal year ¥ 6,307,463 ¥ 5,871,244 Weighted average interest rate on outstanding balance at end of fiscal year 0.00 % 0.00 % At March 31, 2022 and 2023, the MUFG Group had unused lines of credit for financing amounting to ¥4,741,464 million and ¥3,321,061 million, respectively. The amounts principally consist of pooled collateral which are used to cover shortages in the Bank of Japan account and to meet liquidity needs. The MUFG Group may borrow from the Bank of Japan on demand up to the total amount of collateral eligible for credit extension. Other short-term borrowings at March 31, 2022 and 2023 were comprised of the following: 2022 2023 (in millions, except percentages) Domestic offices: Commercial paper ¥ 1,491,509 ¥ 1,123,528 Borrowings from the Bank of Japan 10,231,483 1,186,251 Borrowings from other financial institutions 68,384 95,785 Other (1) 810,849 976,832 Total domestic offices 12,602,225 3,382,396 Foreign offices: Commercial paper 3,776,737 4,771,323 Borrowings from other financial institutions 82,914 160,292 Short-term debentures 22,059 21,338 Other 59,287 105,501 Total foreign offices 3,940,997 5,058,454 Total 16,543,222 8,440,850 Less unamortized discount 85 2,836 Other short-term borrowings—net ¥ 16,543,137 ¥ 8,438,014 Weighted average interest rate on outstanding balance at end of fiscal year 0.09 % 2.83 % Note: (1) Includes borrowings from the jointly operated designated money in trusts. Long-term debt (with original maturities of more than one year) at March 31, 2022 and 2023 was comprised of the following: 2022 2023 (in millions) MUFG: Obligations under finance leases ¥ 3,326 ¥ 1,720 Unsubordinated debt (1) : Fixed rate bonds, payable in US dollars, due 2023-2039, principally 0.85%-5.72% 5,501,311 7,226,689 Fixed rate bonds, payable in Euro, due 2023-2033, principally 0.34%-3.56% 508,524 578,508 Fixed rate bonds, payable in other currencies, due 2024-2029, principally 2.08%-4.05% (2) 37,424 37,425 Adjustable rate bonds, payable in Japanese yen, due 2024-2034, principally 0.14%-1.47% 95,900 451,500 Adjustable rate bonds, payable in Euro, due 2025-2027, principally 0.34%-3.27% 68,350 408,016 Adjustable rate borrowings, payable in Japanese yen, due 2025-2037, principally 0.76%-1.86% — 272,000 Floating rate bonds, payable in US dollars, due 2023-2026, principally 5.53%-6.16% 416,171 400,487 Floating rate bonds, payable in Euro, due 2023, principally 3.25% 47,845 51,002 Floating rate bonds, payable in other currencies, due 2024, principally 4.52% (2) 36,800 35,876 Total 6,712,325 9,461,503 Subordinated debt (1) : Fixed rate bonds, payable in Japanese yen, due 2024-2033, principally 0.37%-1.56% 771,014 872,810 Fixed rate borrowings, payable in Japanese yen, due 2025-2028, principally 0.57%-0.79% — 86,000 Adjustable rate bonds, payable in Japanese yen, due 2028-2033, principally 0.29%-1.21% 905,925 908,541 Adjustable rate bonds, payable in Japanese yen, no stated maturity, principally 0.82%-2.50% 1,486,734 1,366,633 Adjustable rate borrowings, payable in Japanese yen, due 2029-2032, principally 0.30%-0.72% 31,500 34,000 Adjustable rate borrowings, payable in Japanese yen, no stated maturity, principally 0.85%-1.33% 86,725 94,856 Floating rate borrowings, payable in Japanese yen, due 2025-2028, principally 0.57%-0.79% 86,000 — Total 3,367,898 3,362,840 Total 10,083,549 12,826,063 MUFG Bank: Obligations under finance leases ¥ 4,419 ¥ 4,652 Unsubordinated debt (1) : Fixed rate bonds, payable in Japanese yen, due 2023-2027, principally 0.63%-2.34% 72,400 37,300 Fixed rate bonds, payable in US dollars, due 2023-2052, principally 0.00%-4.70% 1,052,443 1,073,796 Fixed rate bonds, payable in Euro, due 2033, principally 1.81% 6,152 6,557 Fixed rate borrowings, payable in Japanese yen, due 2023-2028, principally 0.00%-0.25% 18,582,830 20,582,218 Fixed rate borrowings, payable in US dollars, due 2030, principally 2.93% 8,371 7,601 Adjustable rate borrowings, payable in US dollars, due 2023, principally 5.14%-5.54% — 86,127 Floating rate borrowings, payable in US dollars, due 2023-2031, principally 4.49%-8.76% 714,718 671,936 Floating rate borrowings, payable in Euro, due 2025-2036, principally 2.30%-3.39% 103,231 100,065 Total 20,540,145 22,565,600 Subordinated debt (1) : Fixed rate bonds, payable in Japanese yen, due 2025-2031, principally 1.95%-2.91% 236,000 175,500 Fixed rate borrowings, payable in Japanese yen, due 2023-2035, principally 0.44%-2.24% 71,000 59,500 Adjustable rate borrowings, payable in Japanese yen, due 2028, principally 1.06% 10,000 10,000 Floating rate borrowings, payable in Japanese yen, due 2027, principally 0.27% 15,000 15,000 Total 332,000 260,000 Obligations under loan securitization transaction accounted for as secured borrowings due 2023-2080, principally 0.13%-10.00% 519,718 445,821 Total 21,396,282 23,276,073 2022 2023 (in millions) Other subsidiaries: Obligations under finance leases ¥ 8,359 ¥ 13,098 Unsubordinated debt (1) : Fixed rate borrowings, bonds and notes, payable in Japanese yen, due 2023-2051, principally 0.00%-23.00% 1,088,884 1,012,649 Fixed rate borrowings, bonds and notes, payable in US dollars, due 2023-2036, principally 0.00%-50.00% 124,841 95,593 Fixed rate borrowings, bonds and notes, payable in Euro, due 2024-2030, principally 0.00% 10,796 1,148 Fixed rate borrowings, bonds and notes, payable in Thai baht, due 2023-2028, principally 0.00%-6.90% 230,630 154,698 Fixed rate borrowings, bonds and notes, payable in other currencies, due 2023-2037, principally 0.00%-9.50% (2) 306,778 322,457 Floating/Adjustable rate borrowings, bonds and notes, payable in Japanese yen, due 2023-2053, principally 0.00%-38.50% 1,000,691 1,009,268 Floating/Adjustable rate borrowings, bonds and notes, payable in US dollars, due 2023-2032, principally 0.00%-43.00% 130,597 103,125 Adjustable rate bonds and notes, payable in Euro, due 2024-2025, principally 0.10%-1.00% 230 193 Total 2,893,447 2,699,131 Subordinated debt (1) : Fixed rate borrowings, bonds and notes, payable in Japanese yen, due 2023-2030, principally 1.53%-2.61% 114,946 34,700 Fixed rate bonds and notes, payable in US dollars, due 2027-2030, principally 7.50%-8.00% 2,262 2,329 Fixed rate bonds and notes, payable in Thai baht, due 2029-2032, principally 3.00%-4.30% 208,581 231,138 Floating rate bonds and notes, payable in US dollars, due 2028, principally 9.86% 2,866 5,253 Total 328,655 273,420 Obligations under loan securitization transaction accounted for as secured borrowings due 2022, principally 2.25% 1 — Total 3,230,462 2,985,649 Total 34,710,293 39,087,785 Debt issuance cost ¥ (13,694) ¥ (16,030) Total ¥ 34,696,599 ¥ 39,071,755 Notes: (1) Adjustable rate debts are debts where interest rates are reset in accordance with the terms of the debt agreements, and floating rate debts are debts where interest rates are repriced in accordance with movements of markets indices. (2) Minor currencies, such as Australian dollar, Indonesian rupiah, South Korean won, etc., excluding Japanese yen, US dollars, Euro and Thai baht have been summarized into the “Other currencies” classification. The MUFG Group uses derivative financial instruments to manage its interest rate and currency exposures for certain debts. The derivative financial instruments include swaps, forwards, options and other types of derivatives. As a result of these derivative instruments, the effective rates reflected in the table above may differ from the coupon rates. The interest rates for the adjustable and floating rate debt shown in the above table are those in effect at March 31, 2022 and 2023. Certain debt agreements permit the MUFG Group to redeem the related debt, in whole or in part, prior to maturity at the option of the issuer on terms specified in the respective agreements. The following is a summary of maturities of long-term debt subsequent to March 31, 2023 : MUFG BK Other subsidiaries Total (in millions) Fiscal year ending March 31: 2024 ¥ 899,334 ¥ 1,239,768 ¥ 691,145 ¥ 2,830,247 2025 1,331,578 18,187,331 494,856 20,013,765 2026 2,267,854 1,245,954 317,642 3,831,450 2027 580,729 164,253 258,031 1,003,013 2028 1,346,562 1,167,991 101,229 2,615,782 2029 and thereafter 6,400,006 1,270,776 1,122,746 8,793,528 Total ¥ 12,826,063 ¥ 23,276,073 ¥ 2,985,649 ¥ 39,087,785 New Issuances of Debt for Basel III For the fiscal year ended March 31, 2023, the MUFG Group issued to institutional investors in Japan ¥90,000 million aggregate principal amount of unsecured perpetual subordinated Additional Tier 1 notes. These notes are subject to the MUFG Group’s discretion to cease interest payments and a write-down of the principal upon the occurrence of certain events, including when the MUFG Group’s Common Equity Tier 1 ratio declines below 5.125%, when the MUFG Group is deemed to be at risk of becoming non-viable or when the MUFG Group becomes subject to bankruptcy proceedings.

Severance Indemnities and Pensi

Severance Indemnities and Pension Plans	12 Months Ended
	Mar. 31, 2023
Retirement Benefits [Abstract]
Severance Indemnities and Pension Plans	SEVERANCE INDEMNITIES AND PENSION PLANS Defined Benefit Pension Plans The MUFG Group has funded non-contributory defined benefit pension plans, which cover substantially all of its employees and mainly provide for lifetime annuity payments commencing at age 65 (“pension benefits”) based on eligible compensation at the time of severance, rank, years of service and other factors. MUFG Bank and certain domestic subsidiaries, Mitsubishi UFJ Trust and Banking, Mitsubishi UFJ Securities Holdings, Mitsubishi UFJ NICOS and some subsidiaries of MUFG have non-contributory Corporate Defined Benefit Pension plans which provide benefits to all their domestic employees. The MUFG Group also offers qualified and nonqualified defined benefit pension plans in foreign offices and subsidiaries for their employees. The qualified plans are non-contributory defined pension plans, which provide benefits upon retirement based on years of service and average compensation and cover substantially all of the employees of such foreign offices and subsidiaries. With respect to the offices and subsidiaries in the United States of America, the qualified plans are funded on a current basis in compliance with the requirement of the Employee Retirement Income Security Act of the United States of America. The nonqualified plans are non-contributory defined benefit pension plans, under which certain employees earn pay and interest credits on compensation amounts above the maximum stipulated by applicable laws under the qualified plans. Severance Indemnities Plans The MUFG Group has SIPs under which their employees in Japan, other than those who are directors, are entitled, under most circumstances, upon mandatory retirement at normal retirement age or earlier termination of employment, to lump-sum severance indemnities based on eligible compensation at the time of severance, rank, years of service and other factors. Under SIPs, benefit payments in the form of a lump-sum cash payment with no option to receive annuity payments, upon mandatory retirement at normal retirement age or earlier termination of employment, are provided. When a benefit is paid in a single payment to a benefit payee under the plans, the payment represents final relief of the obligation. Other Postretirement Plans The MUFG Group’s foreign offices and subsidiaries, primarily in the United States of America, provide their employees with certain postretirement medical and life insurance benefits (“other benefits”). As part of the transaction discussed in Note 2, assets and obligations of defined benefit pension plan and other postretirement plan, which MUFG Union Bank had maintained, were assigned to MUFG Bank and U.S. Bancorp in proportion to each entity’s share of the underlying participant obligations of the plans, and the related profit, loss and other comprehensive income for the three-month lag period are not reflected on the consolidated statements of operations and the consolidated statements of comprehensive income for the fiscal year ended March 31, 2023, and instead have been recognized as direct adjustments to retained earnings and Accumulated OCI, respectively. The effects of the elimination of the difference in reporting periods for the assets and obligations of defined pension plan and other postretirement plan resulted in a net adjustment to unappropriated retained earnings of ¥2,086 million and Accumulated OCI, net of taxes of ¥27,593 million , which is recorded in Elimination of the difference in reporting periods of the transferred business in the consolidated statements of equity for the fiscal year ended March 31, 2023. However, the disclosures in the remainder of this note disregard the separate presentation of this effect in the funded status, and the removal of these gains, losses, and OCI for the three months period from the components of net periodic cost and OCI. Net periodic cost of pension benefits and other benefits for the fiscal years ended March 31, 2021, 2022 and 2023 include the following components: Domestic subsidiaries Foreign offices and subsidiaries 2021 2022 2023 2021 2022 2023 Pension benefits and SIP Pension benefits and SIP Pension benefits and SIP Pension benefits Other benefits Pension benefits Other benefits Pension benefits Other benefits (in millions) Service cost—benefits earned during the fiscal year ¥ 46,861 ¥ 44,160 ¥ 41,026 ¥ 13,947 ¥ 229 ¥ 16,853 ¥ 140 ¥ 16,808 ¥ 97 Interest cost on projected benefit obligation 11,091 11,995 14,356 14,295 793 11,233 494 20,573 1,002 Expected return on plan assets (71,078) (81,902) (84,084) (31,161) (2,118) (33,269) (2,415) (44,590) (3,200) Amortization of net actuarial loss (gain) 17,019 770 1,446 11,560 208 16,573 (64) 7,534 155 Amortization of prior service cost (1,205) (1,280) (1,396) (2,614) (448) (2,802) (385) (3,124) (432) Loss (gain) on settlements and curtailment (4,605) (5,820) (4,860) 30 — 44 — 84,345 (1) — Net periodic benefit cost (income) ¥ (1,917) ¥ (32,077) ¥ (33,512) ¥ 6,057 ¥ (1,336) ¥ 8,632 ¥ (2,230) ¥ 81,546 ¥ (2,378) Note: (1) One-time write off of unrecognized retirement benefit obligations of ¥84,345 million was recorded in connection with a pension buyout transaction to transfer portions of the defined benefit pension plans of MUFG Bank’s overseas branches. The following table summarizes the assumptions used in computing the present value of the projected benefit obligations and the net periodic benefit cost: Domestic subsidiaries Foreign offices and subsidiaries 2021 2022 2023 2021 2022 2023 Pension benefits and SIP Pension benefits and SIP Pension benefits and SIP Pension benefits Other benefits Pension benefits Other benefits Pension benefits Other benefits (in millions) Weighted-average assumptions used: Discount rates in determining expense 0.63 % 0.71 % 0.86 % 2.94 % 2.72 % 2.19 % 1.82 % 2.51 % 2.21 % Discount rates in determining benefit obligation 0.71 0.86 1.36 2.34 2.23 2.78 2.63 4.76 4.68 Rates of increase in future compensation level for determining expense 3.46 3.46 3.46 5.12 — 5.09 — 5.04 — Rates of increase in future compensation level for determining benefit obligation 3.46 3.46 3.47 5.09 — 5.04 — 5.09 — Expected rates of return on plan assets 2.93 2.89 2.93 6.19 7.00 5.91 7.00 4.86 5.50 Cash balance crediting rate for determining expense 2.46 2.46 2.46 2.39 — 1.62 — 1.94 — Cash balance crediting rate for determining benefit obligation 2.46 2.46 2.46 1.62 — 1.94 — 3.72 — The following tables present the assumed health care cost trend rates for foreign offices and subsidiaries, which are used to measure the expected cost of benefits for the next year: MUAH Other than MUAH 2022 (1) 2023 2022 (1) 2023 (1) Initial trend rate 4.13 % — 6.50 % 7.00 % Ultimate trend rate 3.77 % — 4.50 % 4.50 % Year the rate reaches the ultimate trend rate 2029 — 2029 2031 Note: (1) Fiscal years of MUFG Americas Holdings and foreign subsidiaries end on December 31. Therefore, the above tables present the rates and amounts at December 31, 2021 and 2022, respectively. The following table sets forth the combined funded status and amounts recognized in the accompanying consolidated balance sheets at March 31, 2022 and 2023: Domestic subsidiaries Foreign offices and subsidiaries 2022 2023 2022 2023 Non-contributory pension benefits and SIP Non-contributory pension benefits and SIP Pension benefits Other benefits Pension benefits Other benefits (in millions) Change in benefit obligation: Benefit obligation at beginning of fiscal year ¥ 1,753,483 ¥ 1,692,105 ¥ 580,953 ¥ 31,354 ¥ 619,739 ¥ 30,791 Service cost 44,160 41,026 16,853 140 16,808 97 Interest cost 11,995 14,356 11,233 494 20,573 1,002 Plan participants’ contributions — — — 433 — 689 Acquisitions/ Divestitures (242) (584) (130) — (77,231) (3,818) Amendments (1,054) — 402 — (1,250) — Actuarial loss (gain) (28,814) (113,554) (24,611) (1) (2,269) (98,693) (1) (5,329) Benefits paid (65,853) (65,897) (24,501) (2,580) (33,456) (3,785) Lump-sum payment (21,570) (20,179) (3,591) — (4,476) — Translation adjustments and other — — 63,131 3,219 (247,171) (2) 4,548 Benefit obligation at end of fiscal year 1,692,105 1,547,273 619,739 30,791 194,843 24,195 Change in plan assets: Fair value of plan assets at beginning of fiscal year 2,858,013 2,890,503 604,404 33,349 705,864 39,528 Actual return on plan assets 77,848 (76,526) 49,277 4,619 (126,085) (6,722) Employer contributions 20,487 26,734 4,627 (116) 1,277 (8,104) Acquisitions/ Divestitures 8 (242) — — (100,438) (5,649) Plan participants’ contributions — — — 433 — 689 Benefits paid (65,853) (65,897) (24,501) (2,580) (33,456) (3,785) Translation adjustments and other — — 72,057 3,823 (231,343) (2) 6,240 Fair value of plan assets at end of fiscal year 2,890,503 2,774,572 705,864 39,528 215,819 22,197 Amounts recognized in the consolidated balance sheets: Prepaid benefit cost ¥ 1,216,703 ¥ 1,245,150 ¥ 153,861 ¥ 12,104 ¥ 89,109 ¥ 1,110 Accrued benefit cost (18,305) (17,851) (67,736) (3,367) (68,133) (3,108) Net amount recognized ¥ 1,198,398 ¥ 1,227,299 ¥ 86,125 ¥ 8,737 ¥ 20,976 ¥ (1,998) Notes: (1) Significant gains and losses related to changes in the benefit obligation for the fiscal years ended March 31, 2022 and 2023 primarily result from changes in the discount rate. (2) In connection with a pension buyout transaction, portions of the defined benefit pension plans of MUFG Bank’s overseas branches were transferred. The related obligations and assets were ¥327,203 million and ¥327,203 million, respectively. The aggregated accumulated benefit obligations of these plans at March 31, 2022 and 2023 were as follows: Domestic subsidiaries Foreign offices and subsidiaries 2022 2023 2022 2023 (in millions) Aggregated accumulated benefit obligations ¥ 1,663,543 ¥ 1,521,419 ¥ 596,153 ¥ 170,917 The projected benefit obligations, accumulated benefit obligations and fair value of plan assets for the plans with accumulated benefit obligations in excess of plan assets at March 31, 2022 and 2023 were as follows: Domestic subsidiaries Foreign offices and subsidiaries 2022 2023 2022 2023 (in millions) Projected benefit obligations ¥ 25,327 ¥ 24,918 ¥ 87,876 ¥ 81,128 Accumulated benefit obligations 25,327 24,918 67,612 62,308 Fair value of plan assets 7,223 7,315 20,139 12,995 MUFG Bank, Mitsubishi UFJ Trust and Banking, Mitsubishi UFJ Securities Holdings, Mitsubishi UFJ NICOS and other subsidiaries paid special lump-sum termination benefits which are not a part of pension plans to certain early-terminated employees. The amounts charged to operations for such early termination benefits for the fiscal years ended March 31, 2021, 2022 and 2023 were ¥16,716 million, ¥16,235 million and ¥16,888 million, respectively. The following table presents the amounts recognized in Accumulated OCI of the MUFG Group at March 31, 2022 and 2023: Domestic subsidiaries Foreign offices and subsidiaries 2022 2023 2022 2023 Pension benefits and SIP Pension benefits and SIP Pension benefits Other benefits Pension benefits Other benefits (in millions) Net actuarial loss (gain) ¥ (18,183) ¥ 32,257 ¥ 47,093 ¥ (1,070) ¥ 21,347 ¥ 2,729 Prior service cost (2,845) (1,449) (3,742) (1,650) (1,747) (1,375) Gross amount recognized in Accumulated OCI (21,028) 30,808 43,351 (2,720) 19,600 1,354 Taxes (36,389) (52,367) (12,092) 616 (6,135) (736) Net amount recognized in Accumulated OCI ¥ (57,417) ¥ (21,559) ¥ 31,259 ¥ (2,104) ¥ 13,465 ¥ 618 The following table presents OCI for the fiscal years ended March 31, 2022 and 2023: Domestic subsidiaries Foreign offices and subsidiaries 2022 2023 2022 2023 Pension benefits and SIP Pension benefits and SIP Pension benefits Other benefits Pension benefits Other benefits (in millions) Net actuarial loss (gain) arising during the year ¥ (24,790) ¥ 47,026 ¥ (40,559) ¥ (4,471) ¥ 59,505 ¥ 4,129 Prior service cost arising during the year (1,053) — 402 55 (597) — Losses (gains) due to amortization: Net actuarial loss (gain) (770) (1,446) (16,573) 64 (7,534) (155) Prior service cost 1,280 1,396 2,802 385 3,124 432 Curtailment and settlement 5,820 4,860 (44) — (84,345) (1) — Foreign currency translation adjustments — — 6,683 (139) 6,096 (332) Total changes in Accumulated OCI ¥ (19,513) ¥ 51,836 ¥ (47,289) ¥ (4,106) ¥ (23,751) ¥ 4,074 Note: (1) One-time write off of unrecognized retirement benefit obligations of ¥84,345 million was recorded in connection with a pension buyout transaction to transfer portions of the defined benefit pension plans of MUFG Bank’s overseas branches. Investment policies MUFG’s investment policy for plan assets is based on an asset liability matching strategy which is intended to maintain adequate liquidity for benefit payments and to achieve a stable increase in the plan assets in the medium and long-term through proper risk control and return maximization. As a general rule, investment policies for plan assets are reviewed periodically for some plans and in the following situations for all plans: (1) large fluctuations in pension plan liabilities caused by modifications to pension plans, or (2) changes in the market environment. The plan assets allocation strategies are the principal determinant in achieving expected investment returns on the plan assets. Actual asset allocations may fluctuate within acceptable ranges due to market value variability. Plan assets are managed by a combination of internal and external asset management companies and are rebalanced when market fluctuations cause an asset category to fall outside of its strategic asset allocation range. Performance of each plan asset category is compared against established indices and similar plan asset groups to evaluate whether the risk associated with the portfolio is appropriate for the level of return. The weighted-average target asset allocation of plan assets for the pension benefits and other benefits at March 31, 2023 was as follows: Domestic subsidiaries Foreign offices and subsidiaries Asset category Pension benefits and SIP Pension benefits Other benefits Japanese equity securities 34.2 % — % — % Japanese debt securities 27.6 — — Non-Japanese equity securities 13.8 16.3 30.0 Non-Japanese debt securities 18.1 64.8 64.0 Real estate 1.3 3.6 6.0 Short-term assets and other 5.0 15.3 — Total 100.0 % 100.0 % 100.0 % Basis and procedure for estimating long-term return of each asset category MUFG’s expected long-term rate of return on plan assets for domestic defined benefit pension plans and SIPs is based on a building-block methodology, which calculates the total long-term rate of return of the plan assets by aggregating the weighted rate of return derived from both long-term historical performance and forward-looking return expectations from each asset category. MUFG has determined the expected long-term rate of return for each asset category as follows: • Japanese equity securities: the rate for Japanese debt securities plus a premium for the risk associated with Japanese equity securities • Japanese debt securities: economic growth rate of Japan • Non-Japanese equity securities: the rate for non-Japanese debt securities plus a premium for the risk associated with non-Japanese equity securities • Non-Japanese debt securities: global economic growth rate Foreign offices and subsidiaries periodically reconsider the expected long-term rate of return for their plan assets. They evaluate the investment return volatility of different asset categories and compare the liability structure of their pension and other benefits to those of other companies, while considering their funding policy to maintain a funded status sufficient to meet participants’ benefit obligations, and reduce long-term funding requirements and pension costs. Based on this information, foreign offices and subsidiaries update the expected long-term rate of return. Estimated future benefit payments The following table presents benefit payments expected to be paid, which include the effect of expected future service for the fiscal years indicated: Domestic subsidiaries Foreign offices and subsidiaries Pension benefits and SIP Pension benefits Other benefits (in millions) Fiscal year ending March 31: 2024 ¥ 80,489 ¥ 14,370 ¥ 2,364 2025 79,347 10,311 2,252 2026 78,884 11,562 2,138 2027 77,514 13,474 2,014 2028 77,892 14,440 1,874 Thereafter (2029-2033) 372,835 97,390 7,868 Fair value measurement of the plan assets The following is a description of the valuation methodologies used for plan assets measured at fair value as well as the classification of the plan assets pursuant to the fair value hierarchy described in Note 31. Government bonds and other debt securities When quoted prices are available in an active market, the MUFG Group adopts the quoted prices to measure the fair value of securities and such securities are classified in Level 1 of the fair value hierarchy. Level 1 securities include Japanese government bonds, most non-Japanese government bonds and certain corporate bonds. When quoted prices are available but not traded actively, such securities are classified in Level 2 of the fair value hierarchy. When quoted prices are not available, the MUFG Group generally estimates fair values by using non-binding prices obtained from independent pricing vendors. Such securities are generally classified in Level 2 of the fair value hierarchy. Level 2 securities include certain non-Japanese government bonds, official institution bonds and corporate bonds. When there is lack of liquidity for securities or significant inputs adopted to the fair value measurements are unobservable, such securities are classified in Level 3 of the fair value hierarchy. Such Level 3 securities mainly consist of non-Japanese corporate bonds. Marketable equity securities When quoted prices are available in an active market, the MUFG Group adopts the quoted prices to measure the fair value of marketable equity securities and such securities are classified in Level 1 of the fair value hierarchy. When quoted prices are available but not traded actively, such securities are classified in Level 2 of the fair value hierarchy. Japanese pooled funds Japanese pooled funds are investment fund vehicles designed for Japanese pension plan investments under Japanese pension trust fund regulations. Based upon the nature of the funds’ investments, Japanese pooled funds are categorized into four major fund types: Japanese marketable equity securities type, Japanese debt securities type, Non-Japanese marketable equity securities type and Non-Japanese debt securities type. The other types of funds invest in short-term financial instruments or loans receivable. Japanese pooled funds are generally readily redeemable at their net asset values. The fair values of Japanese pooled funds are measured at their net asset values per share (or its equivalent) as a practical expedient. Other investment funds Other investment funds include mutual funds, private investments funds, common collective funds, private equity funds and real estate funds. The listed investment funds or mutual funds are valued at quoted prices and classified in Level 1 or Level 2 of the fair value hierarchy. When there is no available market quotation, the fair values are generally determined at net asset values per share (or its equivalent) as a practical expedient. Other investment funds classified in Level 3 of the fair value hierarchy consist of certain real estate funds whose fair values are not measured at their net asset values but by using significant unobservable inputs and there is inherent lack of the funds’ liquidity. Japanese general accounts of life insurance companies These instruments are contracts with life insurance companies that guarantee return of a certain level of fixed income, which are mainly invested in assets with low market risk such as Japanese debt securities. They are measured at conversion value and classified in Level 2 of the fair value hierarchy. Other investments Other investments mainly consist of call loans with the remainder consisting of miscellaneous accounts such as deposits with banks and short-term investments. These instruments are generally classified in Level 1 or Level 2 of the fair value hierarchy. The following table presents the fair value of each major category of plan assets as of March 31, 2022 and 2023: Pension benefits and SIP Investments: At March 31, 2022 Domestic subsidiaries Foreign offices and subsidiaries Assets category Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total (in millions) Japanese government bonds ¥ 140,538 ¥ — ¥ — ¥ 140,538 ¥ — ¥ — ¥ — ¥ — Non-Japanese government bonds — — — — 68,887 5,385 — 74,272 Other debt securities 9,950 14,648 232 24,830 — 133,815 — 133,815 Japanese marketable equity securities 848,482 — — 848,482 — — — — Non-Japanese marketable equity securities 87,983 176 — 88,159 34,659 556 — 35,215 Other investment funds — — — — 83,442 186,372 — 269,814 (2) Japanese general account of life insurance companies (1) — 209,482 — 209,482 — — — — Other investments 11,819 17,563 — 29,382 1,001 11,095 39,729 51,825 Total ¥ 1,098,772 ¥ 241,869 ¥ 232 ¥ 1,340,873 ¥ 187,989 ¥ 337,223 ¥ 39,729 ¥ 564,941 At March 31, 2023 Domestic subsidiaries Foreign offices and subsidiaries Assets category Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total (in millions) Japanese government bonds ¥ 133,664 ¥ — ¥ — ¥ 133,664 ¥ — ¥ — ¥ — ¥ — Non-Japanese government bonds — — — — 2,632 2,339 — 4,971 Other debt securities 2,793 6,251 40 9,084 — 15,749 — 15,749 Japanese marketable equity securities 809,371 — — 809,371 — — — — Non-Japanese marketable equity securities 78,840 165 — 79,005 3 — — 3 Other investment funds — — — — 38 59,023 — 59,061 Japanese general account of life insurance companies (1) — 205,117 — 205,117 — — — — Other investments 19,644 4,677 — 24,321 2,937 1,869 25,362 30,168 Total ¥ 1,044,312 ¥ 216,210 ¥ 40 ¥ 1,260,562 ¥ 5,610 ¥ 78,980 ¥ 25,362 ¥ 109,952 Notes: (1) “Japanese general accounts of life insurance companies” is a contract with life insurance companies that guarantees a return of approximately 1.25% from April 1, 2021 to March 31, 2022 and 1.25% from April 1, 2022 to March 31, 2023. (2) Other investment funds of the foreign offices and subsidiaries include mutual funds and common collective funds of ¥86,724 million and ¥146,169 million, respectively, which were held by MUFG Americas Holdings at December 31, 2021. The following table presents fair values of certain investments valued at net asset value per share (or its equivalent) as a practical expedient that were excluded from the above table as of March 31, 2022 and 2023: Domestic subsidiaries Foreign offices and subsidiaries Assets category 2022 2023 2022 2023 (in millions) Japanese pooled funds: Japanese marketable equity securities ¥ 104,793 ¥ 71,753 ¥ — ¥ — Japanese debt securities 221,250 120,108 — — Non-Japanese marketable equity securities 219,018 186,555 — — Non-Japanese debt securities 249,274 332,691 — — Other 92,558 76,892 — — Total pooled funds 886,893 787,999 — — Other investment funds 662,737 (1) 726,011 (1) 140,923 (2) 105,867 (2) Total ¥ 1,549,630 ¥ 1,514,010 ¥ 140,923 ¥ 105,867 Notes: (1) Other investment funds of the domestic subsidiaries include mutual funds and real estate funds of ¥625,237 million and ¥15,417 million, respectively, at March 31, 2022 and ¥690,781 million and ¥12,351 million, respectively, at March 31, 2023. (2) Other investment funds of the foreign offices and subsidiaries include mutual funds, real estate funds and common collective funds of ¥25,356 million, ¥80,349 million and ¥34,971 million, respectively, at March 31, 2022 and ¥12,136 million, ¥63,759 million and ¥29,756 million, respectively, at March 31, 2023.

Other Assets and Liabilities

Other Assets and Liabilities	12 Months Ended
	Mar. 31, 2023
Other Assets And Liabilities [Abstract]
Other Assets and Liabilities	OTHER ASSETS AND LIABILITIES Major components of other assets and liabilities at March 31, 2022 and 2023 were as follows: 2022 2023 (in millions) Other assets: Accounts receivable: Receivables from brokers, dealers and customers for securities transactions ¥ 644,443 ¥ 754,483 Other (1) 1,187,311 1,794,983 Investments in equity method investees 3,066,738 3,482,292 Prepaid benefit cost (Note 13) 1,356,603 1,335,369 Cash collateral pledged for derivative transactions (Note 9) 2,893,178 2,585,837 Cash collateral for the use of Bank of Japan’s settlement infrastructure 933,000 933,000 Accrued interest 246,271 500,506 Deferred tax assets (Note 8) 79,191 182,388 Right-of-use assets of operating leases (Note 7) 261,803 227,112 Assets held for sale relating to transferred business of MUFG Union Bank (Note 2) 11,621,567 — Other 4,421,979 5,659,034 Total ¥ 26,712,084 ¥ 17,455,004 Other liabilities: Accounts payable: Payables to brokers, dealers and customers for securities transactions ¥ 1,970,158 ¥ 2,062,782 Other 1,311,035 1,920,945 Obligations to return securities received as collateral (Notes 15, 16 and 31) 6,826,215 6,891,545 Accrued interest 98,183 385,921 Deferred tax liabilities (Note 8) 530,267 208,610 Allowance for off-balance sheet credit instruments 126,055 143,770 Accrued benefit cost (Note 13) 89,062 89,092 Guarantees and indemnifications 45,358 54,359 Cash collateral received for derivative transactions (Note 9) 1,017,580 1,318,338 Obligations under operating leases (Note 7) 384,183 337,391 Liabilities held for sale relating to transferred business of MUFG Union Bank (Note 2) 11,157,660 — Accrued and other liabilities 3,106,706 3,934,453 Total ¥ 26,662,462 ¥ 17,347,206 Note: (1) Accounts receivable—Other is primarily comprised of receivables relating to the card business. The provision or reversal of the allowance for credit losses relating to the receivables is included in Non-interest expense on the consolidated statements of operations. The receivables relating to the card business include ¥5,483 million and ¥6,849 million of past due receivables (1-3 months past due receivables of ¥2,581 million and ¥3,173 million, and greater than 3 months past due receivables of ¥2,902 million and ¥3,676 million) as of March 31, 2022 and 2023, respectively and the credit quality for these receivables is primarily evaluated based on the extent of past due. The outstanding balance of the accounts receivable is presented on a net basis after allowance for credit losses. The change of allowance for credit losses on these receivables during the fiscal years ended March 31, 2021, 2022 and 2023 is primarily due to provision of the allowance for the receivables. Investments in equity method investees include marketable equity securities carried at ¥2,481,644 million and ¥2,918,480 million at March 31, 2022 and 2023, respectively. Corresponding aggregated market values were ¥4,714,562 million and ¥5,099,671 million, respectively. Marketable equity securities include Morgan Stanley’s common stock carried at ¥2,058,638 million and ¥2,443,602 million at March 31, 2022 and 2023, respectively. As of March 31, 2023, the MUFG Group held approximately 22.58% of its common stock. Investments in equity method investees also include investments in Morgan Stanley MUFG Securities, Co., Ltd. at ¥183,932 million and ¥194,225 million at March 31, 2022 and 2023, respectively. The MUFG Group periodically evaluates whether a loss in value of investments in equity method investees is other-than-temporary. As a result of evaluations, the MUFG Group recognized other-than-temporary declines in the value of an investment and recorded impairment losses related to certain affiliated companies of ¥53,758 million, ¥6,949 million and ¥58,061 million for the fiscal years ended March 31, 2021, 2022 and 2023 respectively. The impairment losses are included in Equity in earnings of equity method investees—net in the accompanying consolidated statements of operations. Summarized Financial Information of the MUFG Group’s Equity Method Investees Summarized financial information of Morgan Stanley, the largest portion of the MUFG Group’s equity method investees, as of March 31, 2022 and 2023, and for each of the three years ended March 31, 2023 is as follows: 2022 2023 (in billions) Trading assets ¥ 36,335 ¥ 42,770 Securities purchased under agreements to resell 15,637 16,275 Securities borrowed 18,480 19,524 Total assets 149,589 160,223 Deposits 44,163 46,405 Customer and other payables 29,815 29,470 Borrowings 28,127 33,407 Total liabilities 136,851 146,609 Noncontrolling interests 144 151 2021 2022 2023 (in billions) Net revenues ¥ 5,841 ¥ 6,655 ¥ 7,235 Total non-interest expenses 3,932 4,498 5,376 Income from continuing operations before income taxes 1,881 2,139 1,797 Net income applicable to Morgan Stanley 1,433 1,650 1,402 Summarized financial information of the MUFG Group’s equity method investees, other than Morgan Stanley as of March 31, 2022 and 2023, and for each of the three years ended March 31, 2023 is as follows: 2022 2023 (in billions) Net loans ¥ 17,107 ¥ 18,114 Total assets 32,992 35,208 Deposits 11,291 11,963 Total liabilities 27,255 29,123 Noncontrolling interests 93 77 2021 2022 2023 (in billions) Total interest income ¥ 1,058 ¥ 1,119 ¥ 1,430 Total interest expense 375 335 519 Net interest income 683 784 911 Provision for credit losses 215 207 245 Income before income tax expense 476 582 616 Net income 400 488 498

Offsetting of Derivatives, Repu

Offsetting of Derivatives, Repurchase Agreements, and Securities Lending Transactions	12 Months Ended
	Mar. 31, 2023
Offsetting [Abstract]
Offsetting of Derivatives, Repurchase Agreements, and Securities Lending Transactions	OFFSETTING OF DERIVATIVES, REPURCHASE AGREEMENTS, AND SECURITIES LENDING TRANSACTIONS The following tables present, as of March 31, 2022 and 2023, the gross and net amounts of the derivatives, resale and repurchase agreements, and securities borrowing and lending transactions, including the related gross amounts subject to an enforceable master netting arrangement or similar agreement not offset in the consolidated balance sheets. The MUFG Group primarily enters into International Swaps and Derivatives Association master netting agreements, master repurchase agreements and master securities lending agreements or similar agreements for derivative contracts, resale and repurchase agreements, and securities borrowing and lending transactions. In the event of default on or termination of any one contract, these agreements provide the contracting parties with the right to net a counterparty’s rights and obligations and to liquidate and setoff collateral against any net amount owed by the counterparty. Generally, as the MUFG Group has elected to present such amounts on a gross basis, the amounts subject to these agreements are included in “Gross amounts not offset in the consolidated balance sheet” column in the tabular disclosure below. For certain transactions where a legal opinion with respect to the enforceability of netting has not been sought or obtained, the related amounts are not subject to enforceable master netting agreements and not included in “Gross amounts not offset in the consolidated balance sheet” column in the tabular disclosure below. At March 31, 2022: Gross amounts of recognized assets/liabilities Gross amounts offset in the consolidated balance sheet Net amounts presented in the consolidated balance sheet (1) Gross amounts not offset in the consolidated balance sheet Net amounts Financial instruments Cash collateral received/pledged (in billions) Financial assets: Derivative assets ¥ 10,611 ¥ — ¥ 10,611 ¥ (7,032) ¥ (620) ¥ 2,959 Receivables under resale agreements 14,527 (2,024) 12,503 (11,614) (29) 860 Receivables under securities borrowing transactions 4,571 (75) 4,496 (4,367) — 129 Total ¥ 29,709 ¥ (2,099) ¥ 27,610 ¥ (23,013) ¥ (649) ¥ 3,948 Financial liabilities: Derivative liabilities ¥ 10,948 ¥ — ¥ 10,948 ¥ (6,749) ¥ (2,225) ¥ 1,974 Payables under repurchase agreements 29,717 (1,991) 27,726 (26,115) (85) 1,526 Payables under securities lending transactions 1,097 (75) 1,022 (990) (5) 27 Obligations to return securities received as collateral 6,826 — 6,826 (1,864) — 4,962 Total ¥ 48,588 ¥ (2,066) ¥ 46,522 ¥ (35,718) ¥ (2,315) ¥ 8,489 At March 31, 2023: Gross amounts of recognized assets/liabilities Gross amounts offset in the consolidated balance sheet Net amounts Gross amounts not offset in the consolidated balance sheet Net amounts Financial instruments Cash collateral received/pledged (in billions) Financial assets: Derivative assets ¥ 12,911 ¥ — ¥ 12,911 ¥ (9,902) ¥ (690) ¥ 2,319 Receivables under resale agreements 16,152 (2,093) 14,059 (13,391) (32) 636 Receivables under securities borrowing transactions 4,630 (74) 4,556 (4,478) — 78 Total ¥ 33,693 ¥ (2,167) ¥ 31,526 ¥ (27,771) ¥ (722) ¥ 3,033 Financial liabilities: Derivative liabilities ¥ 13,833 ¥ — ¥ 13,833 ¥ (9,668) ¥ (1,489) ¥ 2,676 Payables under repurchase agreements 42,172 (2,040) 40,132 (39,232) (76) 824 Payables under securities lending transactions 1,212 (74) 1,138 (1,108) (18) 12 Obligations to return securities received as collateral 6,892 — 6,892 (1,975) — 4,917 Total ¥ 64,109 ¥ (2,114) ¥ 61,995 ¥ (51,983) ¥ (1,583) ¥ 8,429 Note: (1) Net amounts in this table includes those relating to Financial assets and liabilities of transferred business of MUFG Union Bank. See Note 2 for more information.

Repurchase Agreements, and Secu

Repurchase Agreements, and Securities Lending Transactions Accounted for as Secured Borrowings	12 Months Ended
	Mar. 31, 2023
Disclosure of Repurchase Agreements [Abstract]
Repurchase Agreements, and Securities Lending Transactions Accounted for as Secured Borrowings	REPURCHASE AGREEMENTS, AND SECURITIES LENDING TRANSACTIONS ACCOUNTED FOR AS SECURED BORROWINGS The following tables present gross obligations for payables under repurchase agreements, payables under securities lending transactions and obligations to return securities received as collateral by remaining contractual maturity and class of collateral pledged at March 31, 2022 and 2023. Potential risks associated with these arrangements primarily relate to market and liquidity risks. To manage risks associated with market exposure, the MUFG Group generally revalues the collateral underlying its repurchase agreements and securities lending transactions on a daily basis and monitors the value of the underlying securities, consisting of primarily high-quality securities such as Japanese national government and Japanese government agency bonds, and foreign government and official institution bonds. In the event the market value of such securities falls below the related agreements at contract amounts plus accrued interest, the MUFG Group may be required to deposit additional collateral when appropriate. To address liquidity risks, the MUFG Group conducts stress tests to ensure the adequate level of liquidity is maintained in the event of a decline in the fair value of any collateral pledged. March 31, 2022 Remaining Contractual Maturity Overnight and open 30 days or less 31-90 days Over 90 days Total (in billions) Payables under repurchase agreements ¥ 6,703 ¥ 17,050 ¥ 3,934 ¥ 2,030 ¥ 29,717 Payables under securities lending transactions 972 95 29 1 1,097 Obligations to return securities received as collateral 5,782 450 437 157 6,826 Total ¥ 13,457 ¥ 17,595 ¥ 4,400 ¥ 2,188 ¥ 37,640 March 31, 2023 Remaining Contractual Maturity Overnight and open 30 days or less 31-90 days Over 90 days Total (in billions) Payables under repurchase agreements ¥ 8,593 ¥ 23,546 ¥ 8,393 ¥ 1,640 ¥ 42,172 Payables under securities lending transactions 947 191 5 69 1,212 Obligations to return securities received as collateral 5,516 642 404 330 6,892 Total ¥ 15,056 ¥ 24,379 ¥ 8,802 ¥ 2,039 ¥ 50,276 Secured borrowing by the class of collateral pledged at March 31, 2022 and 2023 was as follows: March 31, 2022 Payables under repurchase agreements Payables under securities lending transactions Obligations to return securities received as collateral Total (in billions) Japanese national government and Japanese government agency bonds ¥ 7,486 ¥ 359 ¥ 4,199 ¥ 12,044 Foreign government and official institution bonds 14,116 11 1,017 15,144 Corporate bonds 745 68 330 1,143 Residential mortgage-backed securities 6,720 1 — 6,721 Other debt securities 276 — 2 278 Marketable equity securities 360 641 1,278 2,279 Other 14 17 — 31 Total ¥ 29,717 ¥ 1,097 ¥ 6,826 ¥ 37,640 March 31, 2023 Payables under repurchase agreements Payables under securities lending transactions Obligations to return securities received as collateral Total (in billions) Japanese national government and Japanese government agency bonds ¥ 13,280 ¥ 577 ¥ 3,956 ¥ 17,813 Foreign government and official institution bonds 17,618 9 1,122 18,749 Corporate bonds 657 70 400 1,127 Residential mortgage-backed securities 9,650 — — 9,650 Other debt securities 552 — 46 598 Marketable equity securities 367 556 1,368 2,291 Other 48 — — 48 Total ¥ 42,172 ¥ 1,212 ¥ 6,892 ¥ 50,276

Preferred Stock

Preferred Stock	12 Months Ended
	Mar. 31, 2023
Equity [Abstract]
Preferred Stock	PREFERRED STOCK Pursuant to the Articles of Incorporation, MUFG had been authorized to issue 400,000,000 shares of Class 5 Preferred Stock, 200,000,000 shares of Class 6 Preferred Stock, and 200,000,000 shares of Class 7 Preferred Stock without par value as of March 31, 2023. All classes of preferred stock are non-voting and have preference over common stock for the payment of dividends and the distribution of assets in the event of a liquidation or dissolution of MUFG. They are all non-cumulative and non-participating with respect to dividend payments. Shareholders of all classes of preferred stock have the right to receive a liquidation distribution at ¥2,500 and do not have the right to participate in any further liquidation distributions.

Common Stock and Capital Surplu

Common Stock and Capital Surplus	12 Months Ended
	Mar. 31, 2023
Equity [Abstract]
Common Stock and Capital Surplus	COMMON STOCK AND CAPITAL SURPLUSThe changes in the number of issued shares of common stock during the fiscal years ended March 31, 2021, 2022 and 2023 were as follows: 2021 2022 2023 (shares) Balance at beginning of fiscal year 13,581,995,120 13,581,995,120 13,281,995,120 Retirement of shares of common stock — (300,000,000) (594,284,200) Balance at end of fiscal year 13,581,995,120 13,281,995,120 12,687,710,920 Under the Companies Act, issuances of common stock, including conversions of bonds and notes, are required to be credited to the common stock account for at least 50% of the proceeds and to the legal capital surplus account (“legal capital surplus”) for the remaining amounts. The Companies Act permits Japanese companies, upon approval by the Board of Directors, to issue shares in the form of a “stock split,” as defined in the Companies Act. Also, prior to April 1, 1991, Japanese companies were permitted to issue free share distributions. MUFG Bank and Mitsubishi UFJ Trust and Banking from time to time made free share distributions. These free distributions usually ranged from 5% to 10% of outstanding common stock and publicly-owned corporations in the United States issuing shares in similar transactions would be required to account for them as stock dividends as of the shareholders’ record date by reducing retained earnings and increasing the appropriate capital accounts by an amount equal to the fair value of the shares issued. The application of such U.S. accounting practices to the cumulative free distributions made by MUFG Bank and Mitsubishi UFJ Trust and Banking at March 31, 2023, would have increased capital accounts by ¥1,910,106 million with a corresponding decrease in unappropriated retained earnings. The Companies Act permits that common stock, legal reserve, additional paid-in capital, and other capital surplus and retained earnings can be transferred among these accounts under certain conditions upon the approval of a shareholders’ meeting. The Companies Act limits the increase of paid-in capital in case disposition of treasury stock and issuance of common stock are performed at the same time. As for Capital surplus, the fee retained by MUFG’s subsidiary as underwriting compensation, net of stock issuance expense, was included in the total Capital surplus balance. Treasury Stock The Companies Act permits Japanese companies to effect purchases of their own shares pursuant to a resolution by the shareholders at an annual general meeting until the conclusion of the following ordinary general meeting of shareholders, and to hold such shares as their treasury stock indefinitely regardless of purpose. However, the Companies Act requires the amount of treasury stock purchased should be within the amount of retained earnings available for dividends. Disposition of treasury stock is subject to the approval of the Board of Directors and is to follow the procedures similar to a public offering of shares for subscription. MUFG resolved at the meeting of Board of Directors held on November 15, 2021 to repurchase up to the lesser of 300,000,000 shares of our common stock and ¥150 billion from November 16, 2021 to March 31, 2022. Under this share repurchase program, MUFG repurchased 225,408,800 shares of MUFG's common stock for ¥149,999,964,962 from November 2021 to March 2022. Also, MUFG cancelled 300,000,000 shares of treasury stock on November 30, 2021. MUFG resolved at the meeting of Board of Directors held on May 16, 2022 to repurchase up to the lesser of 600,000,000 shares of our common stock and ¥300 billion from May 17, 2022 to November 11, 2022. Under this share repurchase program, MUFG repurchased 418,926,300 shares of MUFG's common stock for ¥299,999,909,768 from May 2022 to October 2022. Also, MUFG cancelled 418,926,300 shares of treasury stock on November 30, 2022. MUFG resolved at the meeting of Board of Directors held on November 14, 2022 to repurchase up to the lesser of 300,000,000 shares of our common stock and ¥150 billion from December 2, 2022 to January 31, 2023. Under this share repurchase program, MUFG repurchased 175,357,900 shares of MUFG's common stock for ¥149,999,996,001 from December 2022 to January 2023. Also, MUFG cancelled 175,357,900 shares of treasury stock on February 28, 2023. MUFG intends to agilely engage in repurchases of shares of MUFG's own stock as a means to return profits to shareholders and improve capital efficiency, taking into account MUFG's business performance and capital position, opportunities for growth investments, and market conditions including stock prices. As a general policy, MUFG intends to cancel treasury shares to the extent that such shares exceed approximately 5% of our total issued shares (including treasury shares).

Retained Earnings, Legal Reserv

Retained Earnings, Legal Reserve and Dividends	12 Months Ended
	Mar. 31, 2023
Equity [Abstract]
Retained Earnings, Legal Reserve and Dividends	RETAINED EARNINGS, LEGAL RESERVE AND DIVIDENDS In addition to the Companies Act, Japanese banks, including MUFG Bank and Mitsubishi UFJ Trust and Banking, are required to comply with the Banking Law of Japan (the “Banking Law”). Legal Reserve Set Aside as Appropriation of Retained Earnings and Legal Capital Surplus Under the Companies Act The Companies Act provides that an amount at least equal to 10% of the aggregate amount of cash dividends and certain appropriations of retained earnings associated with cash outlays applicable to each period shall be appropriated and set aside as a legal reserve until the aggregate amount of legal reserve set aside as an appropriation of retained earnings and the legal capital surplus equals 25% of stated capital as defined in the Companies Act. Under the Banking Law The Banking Law provides that an amount at least equal to 20% of the aggregate amount of cash dividends and certain appropriations of retained earnings associated with cash outlays applicable to each fiscal year shall be appropriated and set aside as a legal reserve until the aggregate amount of legal reserve set aside as appropriation of retained earnings and the legal capital surplus equals 100% of stated capital as defined in the Companies Act. Transfer of Legal Reserve Under the Companies Act Under the Companies Act, Japanese companies, including MUFG, were permitted, pursuant to a resolution by the shareholders at a general meeting, to make legal reserve set aside as appropriation of retained earnings and legal capital surplus available for dividends until the aggregate amount of the legal reserve and legal capital surplus equals 25% of stated capital as defined in the Companies Act. Under the Companies Act, Japanese companies, including MUFG, MUFG Bank and Mitsubishi UFJ Trust and Banking, are permitted, primarily pursuant to a resolution by the shareholders at a general meeting, to transfer legal capital surplus and legal reserve to stated capital and/or retained earnings without limitations of thresholds, thereby effectively removing the thresholds provided for in the Companies Act and Banking Law at the company’s discretion. Under the Banking Law Under the Banking Law, Japanese banks, including MUFG Bank and Mitsubishi UFJ Trust and Banking, were permitted, pursuant to a resolution by the shareholders at a general meeting, to set aside a legal reserve as an appropriation of retained earnings and legal capital surplus available for dividends until the aggregate amount of the legal reserve and legal capital surplus equals 100% of stated capital as defined in the Companies Act. Unappropriated Retained Earnings and Dividends In addition to the provision that requires an appropriation for legal reserve as described above, the Companies Act and the Banking Law impose certain limitations on the amount available for dividends. Under the Companies Act, the amount available for dividends is based on the amount recorded in MUFG’s general books of account maintained in accordance with Japanese GAAP. The adjustments included in the accompanying consolidated financial statements but not recorded in MUFG’s general books of account, as explained in Note 1, have no effect on the determination of retained earnings available for dividends under the Companies Act. Under the Banking Law, MUFG, MUFG Bank and Mitsubishi UFJ Trust and Banking have to meet the minimum capital adequacy requirements and distributions of retained earnings of MUFG, MUFG Bank and Mitsubishi UFJ Trust and Banking, which are otherwise distributable to shareholders, are restricted in order to maintain the minimum capital requirements. MUFG, formerly known as Mitsubishi Tokyo Financial Group, was established on April 2, 2001 with common stock of ¥924,400 million, preferred stock of ¥222,100 million, legal capital surplus of ¥2,838,693 million and no retained earnings in accordance with the Commercial Code of Japan (“the Code”), which was replaced by the Companies Act, and Japanese GAAP. On October 1, 2005, MUFG started with common stock and preferred stock of ¥1,383,052 million, a legal capital surplus of ¥3,577,570 million and retained earnings of ¥757,458 million in accordance with the Code and Japanese GAAP. MUFG’s amount available for dividends, at March 31, 2023, was ¥4,214,685 million, which is based on the amount recorded in MUFG’s general books of account under Japanese GAAP. Annual dividends, including those for preferred stock, are approved by the shareholders at an annual general meeting held subsequent to the fiscal year to which the dividends are applicable. In addition, a semi-annual interim dividend payment may be made by resolution of the Board of Directors, subject to limitations imposed by the Companies Act and the Banking Law.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	12 Months Ended
	Mar. 31, 2023
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) The following table presents the changes in Accumulated OCI, net of tax and net of noncontrolling interests, for the fiscal years ended March 31, 2021, 2022 and 2023: 2021 2022 2023 (in millions) Accumulated other comprehensive income (loss), net of taxes: Net unrealized gains (losses) on investment securities: Balance at beginning of fiscal year ¥ (344,785) ¥ (383,004) ¥ (674,230) Net change during the fiscal year (38,253) (291,226) (227,053) Effect of adopting new guidance on measurement of credit losses on financial instruments 34 — — Elimination of the difference in reporting periods of the transferred business (Note 2) — — 17,817 Balance at end of fiscal year ¥ (383,004) ¥ (674,230) ¥ (883,466) Net debt valuation adjustments: Balance at beginning of fiscal year ¥ 45,502 ¥ (37,862) ¥ (14,538) Net change during the fiscal year (83,364) 23,324 17,806 Balance at end of fiscal year ¥ (37,862) ¥ (14,538) ¥ 3,268 Net unrealized gains (losses) on derivatives qualifying for cash flow hedges: Balance at beginning of fiscal year ¥ (13,343) ¥ 19,029 ¥ 5,969 Net change during the fiscal year 32,372 (13,060) 5,140 Elimination of the difference in reporting periods of the transferred business (Note 2) — — (10,515) Balance at end of fiscal year ¥ 19,029 ¥ 5,969 ¥ 594 Defined benefit plans: Balance at beginning of fiscal year ¥ (337,918) ¥ (20,382) ¥ 29,124 Net change during the fiscal year 317,536 49,506 6,773 Elimination of the difference in reporting periods of the transferred business (Note 2) — — (27,593) Balance at end of fiscal year ¥ (20,382) ¥ 29,124 ¥ 8,304 Foreign currency translation adjustments: Balance at beginning of fiscal year ¥ 230,127 ¥ 132,738 ¥ 880,708 Net change during the fiscal year (97,389) 747,970 834,784 Balance at end of fiscal year ¥ 132,738 ¥ 880,708 ¥ 1,715,492 Balance at end of fiscal year ¥ (289,481) ¥ 227,033 ¥ 844,192 The following table presents the before tax and net of tax changes in each component of Accumulated OCI for the fiscal years ended March 31, 2021, 2022 and 2023: 2021 2022 2023 Before tax Tax (expense) or benefit Net of tax Before tax Tax (expense) or benefit Net of tax Before tax Tax (expense) or benefit Net of tax (in millions) Net unrealized gains (losses) on investment securities: Net unrealized losses on investment securities ¥ (69,247) ¥ (599) ¥ (69,846) ¥ (347,106) ¥ 76,360 ¥ (270,746) ¥ (600,339) ¥ 159,480 ¥ (440,859) Reclassification adjustment for losses (gains) included in net income (loss) before attribution of noncontrolling interests (383) (547) (930) (2,015) 11,268 9,253 337,313 (99,409) 237,904 Elimination of the difference in reporting periods of the transferred business (Note 2) — — — — — — (24,147) 6,330 (17,817) Net change (69,630) (1,146) (70,776) (349,121) 87,628 (261,493) (287,173) 66,401 (220,772) Net unrealized gains (losses) on investment securities attributable to noncontrolling interests (32,523) 29,733 6,281 Net unrealized losses on investment securities attributable to Mitsubishi UFJ Financial Group (38,253) (291,226) (227,053) Net debt valuation adjustments: Net debt valuation adjustments (126,007) 38,584 (87,423) 32,735 (10,025) 22,710 25,220 (7,722) 17,498 Reclassification adjustment for losses included in net income (loss) before attribution of noncontrolling interests 5,851 (1,792) 4,059 885 (271) 614 444 (136) 308 Net change (120,156) 36,792 (83,364) 33,620 (10,296) 23,324 25,664 (7,858) 17,806 Net debt valuation adjustments attributable to noncontrolling interests — — — Net debt valuation adjustments attributable to Mitsubishi UFJ Financial Group (83,364) 23,324 17,806 Net unrealized gains (losses) on derivatives qualifying for cash flow hedges: Net unrealized gains (losses) on derivatives qualifying for cash flow hedges 44,255 (12,359) 31,896 (5,542) 1,825 (3,717) (38,278) 10,600 (27,678) Reclassification adjustment for losses (gains) included in net income (loss) before attribution of noncontrolling interests 164 115 279 (12,200) 3,143 (9,057) 31,019 (8,458) 22,561 Elimination of the difference in reporting periods of the transferred business (Note 2) — — — — — — 14,251 (3,736) 10,515 Net change 44,419 (12,244) 32,175 (17,742) 4,968 (12,774) 6,992 (1,594) 5,398 2021 2022 2023 Before tax Tax (expense) or benefit Net of tax Before tax Tax (expense) or benefit Net of tax Before tax Tax (expense) or benefit Net of tax (in millions) Net unrealized gains (losses) on derivatives qualifying for cash flow hedges attributable to noncontrolling interests (197) 286 258 Net unrealized gains (losses) on derivatives qualifying for cash flow hedges attributable to Mitsubishi UFJ Financial Group 32,372 (13,060) 5,140 Defined benefit plans: Defined benefit plans 436,435 (133,404) 303,031 62,946 (17,350) 45,596 (129,100) 37,654 (91,446) Reclassification adjustment for losses included in net income (loss) before attribution of noncontrolling interests 22,504 (6,479) 16,025 7,042 (1,689) 5,353 98,428 (27,313) 71,115 Elimination of the difference in reporting periods of the transferred business (Note 2) — — — — — — 37,257 (9,664) 27,593 Net change 458,939 (139,883) 319,056 69,988 (19,039) 50,949 6,585 677 7,262 Defined benefit plans attributable to noncontrolling interests 1,520 1,443 489 Defined benefit plans attributable to Mitsubishi UFJ Financial Group 317,536 49,506 6,773 Foreign currency translation adjustments: Foreign currency translation adjustments (61,085) (14,370) (75,455) 853,517 (98,059) 755,458 958,705 (94,056) 864,649 Reclassification adjustment for gains included in net income (loss) before attribution of noncontrolling interests (57,534) 17,738 (39,796) (4,296) 1,317 (2,979) (24,424) 7,480 (16,944) Net change (118,619) 3,368 (115,251) 849,221 (96,742) 752,479 934,281 (86,576) 847,705 Foreign currency translation adjustments attributable to noncontrolling interests (17,862) 4,509 12,921 Foreign currency translation adjustments attributable to Mitsubishi UFJ Financial Group (97,389) 747,970 834,784 Other comprehensive income attributable to Mitsubishi UFJ Financial Group ¥ 130,902 ¥ 516,514 ¥ 637,450 The following table presents the effect of the reclassification of significant items out of Accumulated OCI on the respective line items of the accompanying consolidated statements of operations for the fiscal years ended March 31, 2021, 2022 and 2023: 2021 2022 2023 Details of Accumulated OCI components Amount reclassified out of Accumulated OCI Line items in the consolidated statements of operations (in millions) Net unrealized losses (gains) on investment securities Net losses (gains) on sales and redemptions of Available-for-sale debt securities ¥ 6,410 ¥ (48,637) ¥ (2,682) Investment securities gains (losses)—net Impairment losses on investment securities 6 47,069 359,629 Investment securities gains (losses)—net Gain on sale of MUFG Union Bank (Note 2) — — (28,251) Gain on sale of MUFG Union Bank Other (6,799) (447) 8,617 (383) (2,015) 337,313 Total before tax (547) 11,268 (99,409) Income tax expense (benefit) ¥ (930) ¥ 9,253 ¥ 237,904 Net of tax Net debt valuation adjustments ¥ 5,851 ¥ 885 ¥ 444 Equity in earnings of equity method investees—net or Other non-interest income 5,851 885 444 Total before tax (1,792) (271) (136) Income tax expense (benefit) ¥ 4,059 ¥ 614 ¥ 308 Net of tax Net unrealized losses (gains) on derivatives qualifying for cash flow hedges Interest rate contracts Interest rate contracts ¥ (3,579) ¥ (12,017) ¥ (4,447) Interest income on Loans, Foreign exchange contracts 3,743 (183) (1,419) Interest expense on Long-term debt or Foreign exchange gains—net Gain on sale of MUFG Union Bank (Note 2) — — 36,885 Gain on sale of MUFG Union Bank 164 (12,200) 31,019 Total before tax 115 3,143 (8,458) Income tax expense (benefit) ¥ 279 ¥ (9,057) ¥ 22,561 Net of tax Defined benefit plans Net actuarial loss (1) ¥ 28,787 ¥ 17,279 ¥ 9,135 Other non-interest expenses Prior service cost (1) (4,267) (4,467) (4,952) Other non-interest expenses Loss (gain) on settlements and curtailment, and other (1) (2,016) (5,770) 79,850 Other non-interest income or expenses Gain on sale of MUFG Union Bank (Note 2) — — 14,395 Gain on sale of MUFG Union Bank 22,504 7,042 98,428 Total before tax (6,479) (1,689) (27,313) Income tax expense (benefit) ¥ 16,025 ¥ 5,353 ¥ 71,115 Net of tax Foreign currency translation adjustments ¥ (57,561) ¥ (4,303) ¥ (24,424) Other non-interest income 27 7 — Other non-interest expenses (57,534) (4,296) (24,424) Total before tax 17,738 1,317 7,480 Income tax expense (benefit) ¥ (39,796) ¥ (2,979) ¥ (16,944) Net of tax Total reclassifications for the period ¥ (29,398) ¥ (10,584) ¥ 442,780 Total before tax 9,035 13,768 (127,836) Income tax expense (benefit) ¥ (20,363) ¥ 3,184 ¥ 314,944 Net of tax Note:

Regulatory Capital Requirements

Regulatory Capital Requirements	12 Months Ended
	Mar. 31, 2023
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]
Regulatory Capital Requirements	REGULATORY CAPITAL REQUIREMENT S Japan MUFG, MUFG Bank, Mitsubishi UFJ Trust and Banking and Mitsubishi UFJ Securities Holdings are subject to various regulatory capital requirements promulgated by the regulatory authorities of the countries in which they operate. Failure to meet minimum capital requirements will initiate certain mandatory actions by regulators that, if undertaken, could have a direct material effect on MUFG’s consolidated financial statements. In Japan, MUFG, MUFG Bank, and Mitsubishi UFJ Trust and Banking are subject to regulatory capital requirements promulgated by the Financial Services Agency of Japan (“FSA”) in accordance with the provisions of the Banking Law and related regulations. A banking institution is subject to the minimum capital requirements both on a consolidated basis and a stand-alone basis, and is required to maintain the minimum capital irrespective of whether it operates independently or as a subsidiary under the control of another company. When a bank holding company manages operations of its banking subsidiaries, it is required to maintain the minimum capital adequacy ratio on a consolidated basis in the same manner as its subsidiary banks. The FSA provides two sets of capital adequacy guidelines. One is a set of guidelines applicable to Japanese banks and bank holding companies with their foreign offices conducting international operations, as defined, and the other is applicable to Japanese banks and bank holding companies that are not engaged in international operations conducted by their foreign offices. The Basel Committee on Banking Supervision (“BCBS”) of the Bank for International Settlements (“BIS”) sets capital adequacy standards for all internationally active banks to ensure minimum levels of capital. The Group of Central Bank Governors and Heads of Supervision reached an agreement on the new global regulatory framework, which has been referred to as “Basel III,” in July and September 2010. In December 2010, the Basel Committee agreed on the details of the Basel III rules. Effective as of March 31, 2013, Basel III was adopted by the FSA with transitional measures for Japanese banking institutions with international operations conducted by their foreign offices. MUFG calculated capital ratios as of March 31, 2022 and 2023 in accordance with Basel III. Capital Ratios Basel III is based on “three pillars”: (1) minimum capital requirements, (2) the self-regulation of financial institutions based on supervisory review process, and (3) market discipline through the disclosure of information. As for the denominator of the capital ratio, the Basel framework provides the following risk-based approaches and a range of options for determining risk-weighted assets. “Credit Risk” The Basel framework provides options for determining the risk-weighted assets for credit risk to allow banks to select approaches that are most appropriate for their level of risk assessment. Banks choose one of three approaches: “Standardized Approach,” “Foundation Internal Ratings-Based Approach” or “Advanced Internal Ratings-Based Approach (“AIRB”).” “Market Risk” In the “Amendment to the Capital Accord to incorporate market risks” of the year 1996, a choice between two methodologies “the Standardized Measurement Method” and “Internal Models Approach” is permitted. “Combination of Internal Models Approach and the Standardized Measurement Method” is also allowed under certain conditions. This is unchanged in Basel III. “Operational Risk” Operational risk, which is defined as the risk of loss resulting from inadequate or failed internal processes, people and systems or from external events, is newly added in Basel II. The Basel framework presents three methods for calculating operational risk capital charges: (i) the Basic Indicator Approach; (ii) the Standardized Approach; or (iii) Advanced Measurement Approaches (“AMA”). Banks adopt one of the three approaches to determine the risk-weighted assets for operational risk. Banks need to obtain approval from their supervisors prior to adopting the following approaches to calculate capital requirements for each risk: • the Advanced Internal Ratings-Based Approach for credit risk • the Internal Models Approach for market risk • the Standardized Approach and AMA for operational risk With approval from the FSA, MUFG and most of its major subsidiaries adopt AIRB to calculate capital requirements for credit risk, adopt the AMA to calculate capital requirements for operational risk, as for market risk, adopt the Internal Models Approach mainly to calculate general market risk and adopt the Standardized Measurement Method to calculate specific risk. The MUFG Group’s proprietary assets do not include trust assets under management and administration in a capacity of agent or fiduciary and, accordingly trust account assets are generally not included in the capital measure. However, guarantees for trust principal are counted as off-balance sheet items requiring a capital charge in accordance with the capital adequacy guidelines. Under Basel III, as adopted by the FSA, MUFG’s risk-weighted assets increased, largely reflecting the new capital charge of the credit valuation adjustment (“CVA”), the credit risk related to asset value correlation multiplier for large financial institutions, and the 250% risk-weighted threshold items not deducted from Common Equity Tier 1 capital, as well as the conversion of certain Basel II capital deductions to risk-weighted assets, such as securitizations. On the other hand, as for the numerator of the capital ratio, there are three primary regulatory capital ratios used to assess capital adequacy, Common Equity Tier 1, Tier 1 and Total capital ratios, which are determined by dividing applicable capital components by risk-weighted assets. Tier 1 capital consists of Common Equity Tier 1 capital and Additional Tier 1 capital. Common Equity Tier 1 capital is primarily consisting of common stock, capital surplus, retained earnings, and Accumulated OCI. Regulatory adjustments including certain intangible fixed assets, such as goodwill, and defined-benefit pension fund assets, are made to Common Equity Tier 1. Additional Tier 1 capital generally consists of Basel III compliant preferred securities, and during the transition period, other capital that meets Tier 1 requirements under Basel II standards. Tier 2 capital generally consists of Basel III compliant subordinated debts, capital that meets Tier 2 requirements under Basel II standards during the transition period, certain allowances for credit losses, and noncontrolling interests in subsidiaries’ Tier 2 instruments. Total capital is defined as the sum of Tier 1 and Tier 2 capital. Effective March 31, 2016, the FSA’s capital conservation buffer, countercyclical buffer and the Global Systemically Important Bank (“G-SIB”), as designated by the FSB, surcharge requirements became applicable to Japanese banking institutions with international operations conducted through foreign offices. The requirements had been phased in and fully implemented as of March 31, 2022. In addition to the 4.50% minimum Common Equity Tier 1 capital ratio, MUFG is required to maintain a capital conservation buffer of 2.5% and a G-SIB surcharge of 1.5% as of March 31, 2022 and 2023, and a countercyclical buffer of 0.01% and 0.04% as of March 31, 2022 and 2023, respectively. Leverage Ratios The leverage ratio is designed for monitoring and preventing the build-up of excessive leverage in the banking sector and is expressed as the ratio of Tier 1 capital to both on and off-balance sheet assets adjusted in accordance with the FSA guidance. In December 2017, the Group of Central Bank Governors and Heads of Supervision announced final Basel III reforms. The announced reforms include revisions to the measurement of the leverage ratio and a 3% minimum leverage ratio requirement, plus a G-SIB leverage ratio buffer equal to 50% of the applicable G-SIB capital surcharge. The announcement sets forth implementation dates of January 1, 2018 for the minimum leverage ratio requirement and January 1, 2022 for the G-SIB leverage ratio buffer requirement. Effective as of March 31, 2019, the minimum leverage ratio requirement was adopted by the FSA. In addition, effective as of March 31, 2023, a leverage ratio buffer set at 50% of a G-SIB surcharge, which is 0.75% for MUFG, was adopted by the FSA. The risk-adjusted capital amounts and ratios, and leverage ratios, of MUFG, MUFG Bank and Mitsubishi UFJ Trust and Banking presented in the following table are based on amounts calculated in accordance with Japanese GAAP as required by the FSA. Actual For capital adequacy purposes Amount Ratio Amount Ratio (in millions, except percentages) Consolidated: At March 31, 2022: Total capital (to risk-weighted assets): MUFG (1) ¥ 17,858,656 14.29 % ¥ 15,002,201 12.01 % BK 14,076,877 12.94 8,700,226 8.00 TB 1,969,282 20.78 758,073 8.00 Tier 1 capital (to risk-weighted assets): MUFG (1) 15,476,287 12.38 12,503,916 10.01 BK 12,092,189 11.11 6,525,170 6.00 TB 1,803,306 19.03 568,555 6.00 Common Equity Tier 1 capital (to risk-weighted assets): MUFG (1) 13,823,912 11.06 10,630,203 8.51 BK 10,728,587 9.86 4,893,877 4.50 TB 1,640,458 17.31 426,416 4.50 Leverage ratio: MUFG 15,476,287 5.14 9,023,770 3.00 BK 12,092,189 4.96 7,312,672 3.00 TB 1,803,306 6.77 798,855 3.00 At March 31, 2023: Total capital (to risk-weighted assets): MUFG (1) ¥ 17,166,109 13.91 % ¥ 14,852,953 12.04 % BK 14,207,818 12.58 9,029,639 8.00 TB 2,041,563 20.67 790,026 8.00 Tier 1 capital (to risk-weighted assets): MUFG (1) 14,863,717 12.04 12,385,685 10.04 BK 12,469,254 11.04 6,772,229 6.00 TB 1,770,924 17.93 592,519 6.00 Common Equity Tier 1 capital (to risk-weighted assets): MUFG (1) 13,280,842 10.76 10,535,234 8.54 BK 11,172,146 9.89 5,079,172 4.50 TB 1,620,889 16.41 444,389 4.50 Leverage ratio: MUFG (2) 14,863,717 4.70 11,851,297 3.75 BK 12,469,254 4.75 7,867,085 3.00 TB 1,770,924 7.29 728,488 3.00 Actual For capital Amount Ratio Amount Ratio (in millions, except percentages) Stand-alone: At March 31, 2022: Total capital (to risk-weighted assets): BK ¥ 11,167,553 11.91 % ¥ 7,498,348 8.00 % TB 2,122,840 19.97 850,030 8.00 Tier 1 capital (to risk-weighted assets): BK 9,565,792 10.20 5,623,761 6.00 TB 1,957,340 18.42 637,523 6.00 Common Equity Tier 1 capital (to risk-weighted assets): BK 8,261,659 8.81 4,217,821 4.50 TB 1,794,840 16.89 478,142 4.50 Leverage ratio: BK 9,565,792 4.59 6,249,606 3.00 TB 1,957,340 7.81 751,302 3.00 At March 31, 2023: Total capital (to risk-weighted assets): BK ¥ 11,115,302 10.71 % ¥ 8,295,019 8.00 % TB 2,131,007 19.60 869,700 8.00 Tier 1 capital (to risk-weighted assets): BK 9,644,128 9.30 6,221,264 6.00 TB 1,861,150 17.11 652,275 6.00 Common Equity Tier 1 capital (to risk-weighted assets): BK 8,410,290 8.11 4,665,948 4.50 TB 1,711,650 15.74 489,206 4.50 Leverage ratio: BK 9,644,128 4.02 7,183,295 3.00 TB 1,861,150 8.15 684,297 3.00 Notes: (1) Effective March 31, 2016, the FSA’s capital conservation buffer, countercyclical buffer and G-SIB surcharge requirements became applicable to Japanese banking institutions with international operations conducted through foreign offices. As a result, in addition to the 4.50% minimum Common Equity Tier 1 capital ratio, MUFG is required to maintain a capital conservation buffer of 2.5% and a G-SIB surcharge of 1.5% as of March 31, 2022 and 2023, and the countercyclical buffer of 0.01% and 0.04% as of March 31, 2022 and 2023, respectively. (2) Effective March 31, 2023, the G-SIB leverage ratio buffer requirement became applicable to Japanese banking institutions with international operations conducted through foreign offices. As a result, in addition to the 3.0% minimum leverage ratio, MUFG is required to maintain a G-SIB leverage ratio buffer of 0.75% as of March 31, 2023. Mitsubishi UFJ Morgan Stanley Securities and other securities subsidiaries in Japan and overseas are also subject to regulatory capital requirements of the countries or jurisdictions in which they operate. In Japan, the Financial Instruments and Exchange Act and related ordinance require financial instruments firms to maintain a minimum capital ratio of 120% calculated as a percentage of capital accounts less certain fixed assets, as determined in accordance with Japanese GAAP, against amounts equivalent to market, counterparty credit and operational risks. Specific guidelines are issued as a ministerial ordinance which details the definition of essential components of the capital ratios, including capital, deductible fixed asset items and risks, and related measures. Failure to maintain a minimum capital ratio will trigger mandatory regulatory actions. A capital ratio of less than 140% will call for regulatory reporting and a capital ratio of less than 100% may lead to a suspension of all or part of the business for a period of time and cancellation of a registration. At March 31, 2022, Mitsubishi UFJ Morgan Stanley Securities’s capital accounts less certain fixed assets of ¥486,756 million on a stand-alone basis were 317.1% of the total amounts equivalent to market, counterparty credit and operational risks. At March 31, 2023, its capital accounts less certain fixed assets of ¥550,276 million on a stand-alone basis, are 310.9% of the total amounts equivalent to market, counterparty credit and operational risks. Management believes, as of March 31, 2023, that MUFG, MUFG Bank, Mitsubishi UFJ Trust and Banking, Mitsubishi UFJ Morgan Stanley Securities and other regulated securities subsidiaries met all capital adequacy requirements to which they are subject. United States of America In the United States of America, MUFG Americas Holdings and its banking subsidiary MUFG Union Bank, N.A. (“MUFG Union Bank” or “BK(US)”) are subject to various regulatory capital requirements administered by the U. S. Federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory, and possibly additional discretionary, actions by regulators that, if undertaken, could have a material effect on MUFG Americas Holdings’s consolidated financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, MUFG Americas Holdings must meet specific capital guidelines that involve quantitative measures of MUFG Americas Holdings’s assets, liabilities, and certain off-balance sheet items as calculated under regulatory accounting practices. MUFG Americas Holdings’s capital amounts are also subject to qualitative judgments by the regulators about components, risk-weightings and other factors. Quantitative measures established by regulation to help ensure capital adequacy require MUFG Americas Holdings and MUFG Union Bank to maintain minimum amounts and ratios (set forth in the tables below) of Total and Tier 1 capital (as defined in the regulations) to risk-weighted assets (as defined) and of Tier 1 capital (as defined) to quarterly average assets (as defined). In July 2013, the Board of Governors of the Federal Reserve System and the other U.S. Federal banking agencies adopted final rules making significant changes to the U.S. regulatory capital framework for U.S. banking organizations (U.S. Basel III). The final rules are intended to conform this framework to the BCBS’ current international regulatory capital accord (Basel III). These rules replace the U.S. Federal banking agencies’ general risk-based capital rules (commonly known as “Basel I”), advanced approaches rules (commonly known as “Basel II”) that are applicable to certain large banking organizations (including MUFG Union Bank), and leverage rules, and are subject to certain transition provisions. Among other requirements, the U.S. Basel III rules revise the definition of capital, increase minimum capital ratios, and introduce a minimum Common Equity Tier 1 capital ratio of 4.5% and a capital conservation buffer of 2.5% (for a total minimum Common Equity Tier 1 capital ratio of 7%) and a potential countercyclical buffer of up to 2.5%, which would be imposed by regulators at their discretion if it is determined that a period of excessive credit growth is contributing to an increase in financial institution systemic risk; mandate a Tier 1 leverage ratio of 4% and introduce, for large and internationally active bank holding companies, a Tier 1 Supplementary Leverage Ratio that is currently set at 3% and which incorporates off-balance sheet exposures; revise Basel I rules for calculating risk-weighted assets under a standardized approach; modify the existing Basel II advanced approaches rules for calculating risk-weighted assets under U.S. Basel III; and eliminate, for advanced approaches institutions, over a four-year phase-in period beginning on January 1, 2014, the Accumulated OCI or loss exclusion that had applied under Basel I and Basel II rules. As required under U.S. Basel III rules, the 2.5% capital conservation buffer is being implemented on a phased-in basis in equal increments of 0.625% per year over a four-year period that commenced on January 1, 2016. MUFG Americas Holdings and MUFG Union Bank satisfy the minimum capital requirements including the capital conservation buffer on a fully phased-in basis as those requirements were effective as of December 31, 2021. As described in Note 2, the MUFG Group sold all the issued and outstanding shares of common stock of MUFG Union Bank to U.S. Bancorp on December 1, 2022 and the portion of the business operated in MUFG Americas Holdings became immaterial in the MUFG group perspective. The figures on the table below are calculated according to U.S. Basel III as of December 31,2021. MUFG Americas Holdings’s actual capital amounts and ratios are presented as follows: Actual Minimum capital ratios required (1) Amount Ratio Amount Ratio (in millions, except percentages) MUAH: At December 31, 2021: Total capital (to risk-weighted assets) $ 17,177 16.32 % $ 11,890 11.30 % Tier 1 capital (to risk-weighted assets) 16,843 16.01 9,786 9.30 Tier 1 capital (to quarterly average assets) (2) 16,843 10.44 6,453 4.00 Common Equity Tier 1 capital (to risk-weighted assets) 16,843 16.01 8,208 7.80 Notes: (1) The minimum capital requirement includes a capital conservation buffer of 3.3% at December 31, 2021. (2) Excludes certain deductions. The figures on the table below are calculated according to U.S. Basel III as of December 31, 2021. MUFG Union Bank’s actual capital amounts and ratios are presented as follows: Actual Minimum capital ratios required (1) Ratios OCC requires to be “well capitalized” Amount Ratio Amount Ratio Amount Ratio (in millions, except percentages) BK(US): At December 31, 2021: Total capital (to risk-weighted assets) $ 16,265 17.36 % $ 9,840 10.50 % $ 9,371 10.00 % Tier 1 capital (to risk-weighted assets) 15,629 16.68 7,966 8.50 7,497 8.00 Tier 1 capital (to quarterly average assets) (2) 15,629 12.14 5,149 4.00 6,436 5.00 Common Equity Tier 1 capital (to risk-weighted assets) 15,629 16.68 6,560 7.00 6,091 6.50 Notes: (1) Beginning January 1, 2019, the minimum capital requirement includes a capital conservation buffer of 2.5%. (2) Excludes certain deductions.

Earnings (Loss) Per Common Shar

Earnings (Loss) Per Common Share Applicable to Common Shareholders of MUFG	12 Months Ended
	Mar. 31, 2023
Earnings Per Share [Abstract]
Earnings Per Common Share Applicable to Common Shareholders of MUFG	EARNINGS (LOSS) PER COMMON SHARE APPLICABLE TO COMMON SHAREHOLDERS OF MUFG 2021 2022 2023 (in millions) Income (loss) (Numerator): Net income (loss) attributable to Mitsubishi UFJ Financial Group ¥ 1,117,298 ¥ (83,320) ¥ 599,908 Effect of dilutive instruments: Stock acquisition rights and restricted stock units—Morgan Stanley (4,159) (5,361) (3,816) Earnings (loss) applicable to common shareholders of Mitsubishi UFJ Financial Group and assumed conversions ¥ 1,113,139 ¥ (88,681) ¥ 596,092 2021 2022 2023 (thousands of shares) Shares (Denominator): Weighted average common shares outstanding 12,859,737 12,798,060 12,317,723 Effect of dilutive instruments: Stock acquisition rights and the common shares of MUFG under the Board Incentive Plan (1) — — 1,132 Weighted average common shares for diluted computation 12,859,737 12,798,060 12,318,855 2021 2022 2023 (in yen) Earnings (loss) per common share applicable to common shareholders of Mitsubishi UFJ Financial Group: Basic earnings (loss) per common share: Earnings (loss) applicable to common shareholders of Mitsubishi UFJ Financial Group ¥ 86.88 ¥ (6.51) ¥48.70 Diluted earnings (loss) per common share: Earnings (loss) applicable to common shareholders of Mitsubishi UFJ Financial Group (1) ¥ 86.56 ¥ (6.93) ¥48.39 Note:

Derivative Financial Instrument

Derivative Financial Instruments	12 Months Ended
	Mar. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	DERIVATIVE FINANCIAL INSTRUMENTS The MUFG Group uses various derivative financial instruments both for trading purposes and for purposes other than trading (primarily risk management purposes) in the normal course of business to meet the financial needs of its customers, as a source of revenue and to manage its exposures to a variety of risks. Market risk is the possibility that future changes in market indices make the financial instruments less valuable. The MUFG Group is a party to derivative financial instruments, including swaps, forwards, options and other types of derivatives, dealing primarily with market risk associated with interest rates, foreign currencies, equity and commodity prices, and credit risk associated with counterparty’s nonperformance of transactions. Credit risk is the possibility that a loss may result from a counterparty’s failure to perform according to the terms and conditions of the contract, which may exceed the value of underlying collateral. To reduce credit risk, the MUFG Group may require collateral or guarantees based on a case-by-case assessment of creditworthiness of each customer and evaluation of the instrument. The MUFG Group also uses master netting agreements in order to mitigate overall counterparty credit risk. Trading Activities The MUFG Group’s trading activities include dealing and customer accommodation activities. As part of its trading activities, the MUFG Group offers a variety of derivative financial instruments for managing interest rate and foreign exchange risk to its domestic and foreign corporate and financial institution customers. The MUFG Group also enters into other types of derivative transactions, including equity and credit-related contracts, for its own account. Risk Management Activities As part of the MUFG Group’s risk management activities, asset and liability management is viewed as one of the methods for the MUFG Group to manage its interest rate exposures on interest-bearing assets and liabilities. The MUFG Group uses certain derivative financial instruments in order to minimize significant unplanned fluctuations in earnings that are caused by interest rate volatility. For example, an increase or a decrease in interest income and interest expense on hedged variable rate assets and liabilities as a result of interest rate fluctuations are expected to be substantially offset by the variability in earnings by gains and losses on the derivative instruments that are linked to these hedged assets and liabilities. The MUFG Group enters into interest rate swaps and other contracts primarily to manage the interest rate risk of its loans, investment securities and deposit liabilities. Interest rate contracts, which are generally non-leveraged generic interest rate and basis swaps, options and futures, allow the MUFG Group to effectively manage its interest rate risk position. Option contracts primarily consist of caps, floors, swaptions and options on index futures. Futures contracts used for asset and liability management activities are primarily index futures providing for cash payments based upon the movement of an underlying rate index. The MUFG Group enters into forward exchange contracts, currency swaps and other contracts in response to currency exposures resulting from on-balance sheet assets and liabilities denominated in foreign currencies in order to limit the net foreign exchange position by currency to an appropriate level. Notional Amounts of Derivative Contracts The following table summarizes the notional amounts of derivative contracts at March 31, 2022 and 2023: Notional amounts (1) 2022 2023 (in trillions) Interest rate contracts ¥ 1,391.8 ¥ 1,625.6 Foreign exchange contracts 245.0 307.4 Equity contracts 7.4 5.3 Commodity contracts 0.1 0.1 Credit derivatives 9.8 11.5 Other 3.2 3.2 Total ¥ 1,657.3 ¥ 1,953.1 Note: (1) Includes both written and purchased positions. Impact of Derivatives on the Consolidated Balance Sheets The following table summarizes fair value information on derivative instruments that are recorded on the MUFG Group’s consolidated balance sheets at March 31, 2022 and 2023: Fair value of derivative instruments 2022 (1)(5) 2023 (1)(5) Not designated as hedges (2) Designated as hedges (3) Total derivatives (4) Not designated as hedges (2) Designated as hedges (3) Total derivatives (4) (in billions) Derivative assets: Interest rate contracts ¥ 5,445 ¥ — ¥ 5,445 ¥ 7,445 ¥ — ¥ 7,445 Foreign exchange contracts 4,801 2 4,803 5,276 5 5,281 Equity contracts 151 — 151 90 — 90 Commodity contracts 22 — 22 10 — 10 Credit derivatives 103 — 103 80 — 80 Other (6) 10 — 10 5 — 5 Total derivative assets ¥ 10,532 ¥ 2 ¥ 10,534 ¥ 12,906 ¥ 5 ¥ 12,911 Derivative liabilities: Interest rate contracts ¥ 5,652 ¥ — ¥ 5,652 ¥ 8,697 ¥ — ¥ 8,697 Foreign exchange contracts 4,907 1 4,908 5,018 — 5,018 Equity contracts 277 — 277 128 — 128 Commodity contracts 22 — 22 10 — 10 Credit derivatives 101 — 101 90 — 90 Other (6) (65) — (65) (110) — (110) Total derivative liabilities ¥ 10,894 ¥ 1 ¥ 10,895 ¥ 13,833 ¥ — ¥ 13,833 Notes: (1) The fair value of derivative instruments is presented on a gross basis even when derivative instruments are subject to master netting agreements. Cash collateral payable and receivable associated with derivative instruments are not added to or netted against the fair value amounts. (2) The derivative instruments which are not designated as a hedging instrument are held for trading and risk management purposes, and are presented in Trading account assets liabilities (3) The MUFG Group adopts hedging strategies and applies hedge accounting to certain derivative transactions entered into by certain subsidiaries. The derivative instruments which are designated as hedging instruments are presented in Other assets or Other liabilities on the accompanying consolidated balance sheets. (4) This table does not include contracts with embedded derivatives for which the fair value option has been elected. (5) For more information about fair value measurement and assumptions used to measure the fair value of derivatives, see Note 31. (6) Other mainly includes bifurcated embedded derivatives carried at fair value, which are presented in Loans, Deposits and Long-term debt. Impact of Derivatives on the Consolidated Statements of Operations The following table provides more detailed information regarding the derivative-related impact on the accompanying consolidated statements of operations for the fiscal years ended March 31, 2021, 2022 and 2023: Gains and losses for trading and risk management derivatives (not designated as hedging instruments) Trading and risk management derivatives gains and losses (Not designated as hedging instruments) 2021 2022 2023 Foreign exchange gains (losses) —net Trading account profits (losses) —net Total Foreign exchange gains (losses) —net Trading account profits (losses) —net Total Foreign exchange gains (losses) —net Trading account profits (losses) —net Total (in billions) Interest rate contracts ¥ — ¥ 70 ¥ 70 ¥ — ¥ 51 ¥ 51 ¥ — ¥ 263 ¥ 263 Foreign exchange contracts (91) — (91) (39) — (39) 61 — 61 Equity contracts — (269) (269) — (98) (98) — (13) (13) Credit derivatives — (53) (53) — (34) (34) — (20) (20) Other (1) 11 (178) (167) (6) (21) (27) (3) 8 5 Total ¥ (80) ¥ (430) ¥ (510) ¥ (45) ¥ (102) ¥ (147) ¥ 58 ¥ 238 ¥ 296 Note: (1) Other mainly includes bifurcated embedded derivatives carried at fair value, which are presented in Loans, Deposits and Long-term debt. Credit Derivatives The MUFG Group enters into credit derivatives to manage its credit risk exposure, to facilitate client transactions, and for proprietary trading purposes, under which they provide the counterparty protection against the risk of default on a set of debt obligations issued by a specified reference entity or entities. Types of such credit derivatives primarily include single name credit default swaps, index and basket credit default swaps. The MUFG Group will have to perform under a credit derivative if a credit event as defined under the contract occurs. Such credit events include bankruptcy, dissolution or insolvency of the referenced entity, default and restructuring of the obligations of the referenced entity. The MUFG Group’s counterparties are banks, broker-dealers, insurance and other financial institutions. The contractual or notional amounts of these credit derivatives represent the maximum potential amounts of future payments without consideration of possible recoveries under recourse provisions or from collateral held or pledged. The table below summarizes certain information regarding protection sold through credit derivatives as of March 31, 2022 and 2023: Protection sold Maximum potential/Notional amount by expiration period Fair value At March 31, 2022: 1 year or less 1-5 years Over 5 years Total (Asset)/ Liability (1) (in millions) Single name credit default swaps: Investment grade (2) ¥ 408,281 ¥ 1,874,796 ¥ 731,946 ¥ 3,015,023 ¥ (61,308) Non-investment grade 91,161 349,847 66,452 507,460 5,378 Total 499,442 2,224,643 798,398 3,522,483 (55,930) Index and basket credit default swaps: Investment grade (2) 67,600 458,153 36,955 562,708 (9,604) Non-investment grade 56,299 19,936 — 76,235 (61) Not rated 19,944 279,955 886 300,785 (7,320) Total 143,843 758,044 37,841 939,728 (16,985) Total credit default swaps sold ¥ 643,285 ¥ 2,982,687 ¥ 836,239 ¥ 4,462,211 ¥ (72,915) Protection sold Maximum potential/Notional amount by expiration period Fair value At March 31, 2023: 1 year or less 1-5 years Over 5 years Total (Asset)/ Liability (1) (in millions) Single name credit default swaps: Investment grade (2) ¥ 616,504 ¥ 2,222,393 ¥ 529,796 ¥ 3,368,693 ¥ (30,117) Non-investment grade 163,982 313,135 48,177 525,294 13,477 Total 780,486 2,535,528 577,973 3,893,987 (16,640) Index and basket credit default swaps: Investment grade (2) — 217,259 1,596 218,855 (1,266) Non-investment grade 37,359 599,638 6,200 643,197 (7,121) Not rated — 435,452 3,192 438,644 (3,329) Total 37,359 1,252,349 10,988 1,300,696 (11,716) Total credit default swaps sold ¥ 817,845 ¥ 3,787,877 ¥ 588,961 ¥ 5,194,683 ¥ (28,356) Notes: (1) Fair value amounts are shown on a gross basis prior to cash collateral or counterparty netting. (2) The MUFG Group considers ratings of Baa3/BBB- or higher to meet the definition of investment grade. Single name credit default swaps —Single name credit default swap protects the buyer against the loss of principal on a bond or loan in case of a default by the issuer. The protection buyer pays a premium to the MUFG Group and is protected for the period of the credit default swap. As the seller of protection, the MUFG Group in turn will have to perform under a credit default swap if a credit event as defined under the contracts occurs. In order to provide an indication of the current payment/performance risk of the credit default swaps, the external credit ratings, primarily those provided by Moody’s and Standard & Poor’s (“S&P”), of the underlying reference entity of the credit default swaps are disclosed. Index and basket credit default swaps —Index and basket credit default swaps are credit default swaps that reference multiple names through underlying baskets or portfolios of single name credit default swaps. Typically, in the event of a default on one of the underlying names, the MUFG Group, as the seller of protection, will have to pay a pro-rata portion of the total notional amount of the credit default index or basket contract. In order to provide an indication of the current payment/performance risk of these credit default swaps, the rating scale based upon internal ratings, which generally correspond to ratings defined by primarily Moody’s and S&P, of the underlying reference entities comprising the basket or index were calculated and disclosed. The MUFG Group may economically hedge its exposure to credit derivatives by entering into offsetting derivative contracts. The carrying value and notional amounts of credit protection sold in which the MUFG Group held purchased protection with identical underlying referenced entities were approximately ¥70 billion and ¥4,083 billion, respectively, at March 31, 2022, and approximately ¥27 billion and ¥4,880 billion, respectively, at March 31, 2023. Collateral is held by the MUFG Group in relation to these instruments. Collateral requirements are determined at the counterparty level and cover numerous transactions and products as opposed to individual contracts. Credit Risk, Liquidity Risk and Credit-risk-related Contingent Features

Obligations under Guarantees an

Obligations under Guarantees and Other Off-balance Sheet Instruments	12 Months Ended
	Mar. 31, 2023
Guarantee Obligations And Other Off Balance Sheet Instruments [Abstract]
Obligations under Guarantees and Other Off-balance Sheet Instruments	OBLIGATIONS UNDER GUARANTEES AND OTHER OFF-BALANCE SHEET INSTRUMENTS Obligations under Guarantees The MUFG Group provides customers with a variety of guarantees and similar arrangements, including standby letters of credit, financial and performance guarantees, credit protection, liquidity facilities, other off-balance sheet credit-related support and similar instruments, in order to meet the customers’ financial and business needs. The tables below present the contractual or notional amounts of such guarantees at March 31, 2022 and 2023. The contractual or notional amounts of these instruments represent the maximum potential amounts of future payments without consideration of possible recoveries under recourse provisions or from collateral held or pledged. For certain types of derivatives, such as written interest rate options and written currency options, the maximum potential future payments are unlimited. Accordingly, it is impracticable to estimate the maximum potential amount of future payments. As such, the notional amounts of the related contracts, other than the maximum potential payments, are included in the table. The MUFG Group mitigates its credit risk exposure resulting from guarantees by utilizing various techniques, including collateralization in the form of cash, securities, and real estate properties based on management’s credit assessment of the guaranteed parties and the related credit profile. In order to manage the credit risk exposure, the MUFG Group also enters into sub-participation contracts with third parties who will fund a portion of the credit facility and bear its share of the loss to be incurred in the event that the customer fails to fulfill its obligations. The following table includes guarantees of ¥646.1 billion and ¥549.1 billion at March 31, 2022 and 2023, respectively, which are syndicated out to third parties. The contractual or notional amounts summarized in the following table do not necessarily bear any direct relationship to the future actual credit exposure, primarily because of risk management techniques of the MUFG Group. Maximum potential/ Contractual or Notional amount Amount by expiration period At March 31, 2022: 1 year or less 1-5 years Over 5 years (in billions) Standby letters of credit and financial guarantees ¥ 4,731 ¥ 3,733 ¥ 784 ¥ 214 Performance guarantees 3,828 2,807 887 134 Derivative instruments (1) 39,982 14,670 16,988 8,324 Liabilities of trust accounts 12,262 6,413 672 5,177 Other 71 6 65 — Total ¥ 60,874 ¥ 27,629 ¥ 19,396 ¥ 13,849 Maximum potential/ Contractual or Notional amount Amount by expiration period At March 31, 2023: 1 year or less 1-5 years Over 5 years (in billions) Standby letters of credit and financial guarantees ¥ 4,975 ¥ 4,047 ¥ 743 ¥ 185 Performance guarantees 4,179 3,100 930 149 Derivative instruments (1) 48,363 22,197 16,036 10,130 Liabilities of trust accounts 17,139 8,780 798 7,561 Other 85 15 70 — Total ¥ 74,741 ¥ 38,139 ¥ 18,577 ¥ 18,025 Note: (1) Credit derivatives sold by the MUFG Group are excluded from this presentation. Nature of Guarantee Contracts Standby letters of credit and financial guarantees generally include an obligation of an issuer or a designated third-party to guarantee the performance of the customer to the beneficiary under the terms of contracts such as lending contracts and other similar financial transactions. The MUFG Group is required to make payments to the guaranteed parties in the event that the customers fail to fulfill the obligations under the contracts. The guarantees whose contractual maturities are over 5 years are mainly comprised of guarantees of housing loans. Performance guarantees are contracts that contingently require the MUFG Group to make payments to the guaranteed party based on another party’s failure to perform under an obligating agreement, except financial obligation. For example, performance guarantees include guarantees of completion of construction projects. Derivative instruments that are deemed to be included within the definition of guarantees as prescribed in the guidance on guarantees include certain written options and credit default swaps. In order for the MUFG Group to determine if those derivative instruments meet the definition of guarantees, as prescribed in the guidance on guarantees, the MUFG Group has to track whether the counterparties are actually exposed to losses that will result from the adverse change in the underlyings. Accordingly, the MUFG Group has disclosed information on all credit default swaps and certain written options for which there is a possibility of meeting the definition of guarantees as prescribed in the guidance on guarantees, regardless of whether the counterparties have assets or liabilities related to the underlyings of the derivatives. However, credit derivatives sold by the MUFG Group at March 31, 2022 and 2023 are excluded from this presentation, as they are disclosed in Note 23. Liabilities of trust accounts represent the trustee’s potential responsibility for temporary payments to creditors of liabilities of trust accounts making use of funds of the MUFG Group, unless there are certain agreements with trust creditors that have provisions limiting the MUFG Group’s exposure as a trustee to the trust account assets. A trust may incur external liabilities to obtain certain services during the terms of the trust arrangement. While in principle, any liabilities of a trust are payable by the trust account and its beneficiaries. A trustee’s responsibility may be interpreted to encompass temporary payments for the trust account liabilities when the trust account does not maintain sufficient liquidity available for such liabilities unless the agreement with trust creditors limits the trustee’s exposure to the trust account assets. Liabilities of trust accounts principally includes obligations to return collateral under security lending transactions. The MUFG Group has experienced no significant losses on such responsibilities and its exposure to the risk associated with the temporary payments is judged to be remote because trust account liabilities are generally covered by the corresponding trust account assets. The MUFG Group continuously monitors the liabilities of trust accounts and assesses the trust account’s ability to perform its obligations to prevent any unfavorable outcomes; the MUFG Group claims its recourse for its temporary payments against the trust account assets and the beneficiaries. Carrying Amount At March 31, 2022 and 2023, the carrying amounts of the liabilities related to guarantees and similar instruments set forth above were ¥814,734 million and ¥1,243,157 million, respectively, which are included in Other liabilities and Trading account liabilities. The guarantees and similar instruments comprising the largest components of the total were options sold in the amount of ¥769,376 million and ¥1,188,798 million as of March 31, 2022 and 2023, respectively. Credit derivatives sold by the MUFG Group at March 31, 2022 and 2023 are excluded from this presentation, as they are disclosed in Note 23. In addition, Other liabilities include an allowance for off-balance sheet instruments of ¥51,852 million and ¥48,615 million at March 31, 2022 and 2023, respectively, related to these transactions. Performance Risk The MUFG Group monitors performance risk of its guarantees using the same credit rating system utilized for estimating probabilities of default with its loan portfolio. The MUFG Group’s credit rating system is consistent with both the method of evaluating credit risk under Basel III and those of third-party credit rating agencies. On certain underlying referenced credits or entities, ratings are not available. Such referenced credits are included in the “Not rated” category in the following tables. Presented in the tables below is the maximum potential amount of future payments classified based upon internal credit ratings as of March 31, 2022 and 2023. The determination of the maximum potential future payments is based on the notional amount of the guarantees without consideration of possible recoveries under recourse provisions or from collateral held or pledged. Such amounts do not represent the anticipated losses, if any, on these guarantees. Amount by borrower grade At March 31, 2022: Maximum potential/ Contractual or Notional amount Normal Close Watch (1) Likely to become Bankrupt or Legally/ Virtually Bankrupt (2) Not rated (in billions) Standby letters of credit and financial guarantees ¥ 4,731 ¥ 4,575 ¥ 121 ¥ 31 ¥ 4 Performance guarantees 3,828 3,706 73 22 27 Total ¥ 8,559 ¥ 8,281 ¥ 194 ¥ 53 ¥ 31 Amount by borrower grade At March 31, 2023: Maximum potential/ Contractual or Notional amount Normal Close Watch (1) Likely to become Bankrupt or Legally/ Virtually Bankrupt (2) Not rated (in billions) Standby letters of credit and financial guarantees ¥ 4,975 ¥ 4,819 ¥ 78 ¥ 17 ¥ 61 Performance guarantees 4,179 4,066 53 29 31 Total ¥ 9,154 ¥ 8,885 ¥ 131 ¥ 46 ¥ 92 Notes: (1) Borrowers classified as Close Watch represent those that require close monitoring as the borrower has begun to exhibit elements of potential concern with respect to its business performance and financial condition, the borrower has begun to exhibit elements of serious concern with respect to its business performance and financial condition, including business problems requiring long-term solutions, or the borrower’s loans are TDRs or loans contractually past due 90 days or more for special reasons. (2) Borrowers classified as Likely to become Bankrupt or Legally/Virtually Bankrupt represent those that have a higher probability of default than those categorized as Close Watch due to serious debt repayment problems with poor progress in achieving restructuring plans, the borrower being considered virtually bankrupt with no prospects for an improvement in business operations, or the borrower being legally bankrupt with no prospects for continued business operations because of non-payment, suspension of business, voluntary liquidation or filing for legal liquidation. The guarantees the MUFG Group does not classify based upon internal credit ratings are as follows. The MUFG Group records all derivative contracts at fair value. Aggregate market risk limits have been established, and market risk measures are routinely monitored against these limits. The MUFG Group also manages its exposure to these derivative contracts through a variety of risk mitigation strategies, including, but not limited to, offsetting economic hedge positions. The MUFG Group expects the risk of loss to be remote and believes that the notional amounts of the derivative contracts generally exceed its exposure. Liabilities of trust accounts represent the trustee’s potential responsibility for temporary payments to creditors of liabilities of trust accounts using funds of the MUFG Group. The MUFG Group has experienced no significant losses on such responsibilities and its exposure to the risk associated with the temporary payments is judged to be remote because trust account liabilities are generally covered by the corresponding trust account assets. Other Off-balance Sheet Instruments In addition to obligations under guarantees and similar arrangements set forth above, the MUFG Group issues other off-balance sheet instruments to meet the financial needs of its customers and for purposes other than trading. Such off-balance sheet instruments consist of lending-related commitments, including commitments to extend credit and commercial letters of credit that the MUFG Group provides to meet the financing needs of its customers. Once the MUFG Group issues these off-balance sheet instruments, the MUFG Group is required to extend credit to or make certain payments to the customers or beneficiaries specified pursuant to the underlying contracts unless otherwise provided in the contracts. Since many of these commitments expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. Substantially all of our off-balance sheet instruments is comprised of commitments to extend credit at March 31, 2023, and approximately 62% of these commitments will expire within one year, 34% from one year to five years and 4% after five years. The table below presents the contractual amounts with regard to the other off-balance sheet instruments at March 31, 2022 and 2023: 2022 2023 (in billions) Commitments to extend credit ¥ 82,886 ¥ 88,631 Commercial letters of credit 908 871 Commitments to make investments 478 705 Commitments to extend credit, which generally have fixed expiration dates or other termination clauses, are binding agreements to lend to customers. Commitments are different from guarantees in that the commitments are generally revocable or have provisions that enable the MUFG Group to avoid payments in the event of violations of any conditions of the contracts and certain deterioration of the potential borrowers’ financial condition. Commercial letters of credit, generally used for trade transactions, are typically secured by the underlying goods. The MUFG Group continually monitors the type and amount of collateral and other securities, and requires counterparties to provide additional collateral or guarantors as necessary.

Variable Interest Entities

Variable Interest Entities	12 Months Ended
	Mar. 31, 2023
Variable Interest Entities [Abstract]
Variable Interest Entities	VARIABLE INTEREST ENTITIES In the normal course of business, the MUFG Group has financial interests and other contractual obligations in various entities which may be deemed to be VIEs such as asset-backed conduits, various investment funds, special purpose entities created for structured financing, repackaged instruments, entities created for the securitization of the MUFG Group’s assets and trust arrangements. The following tables present the assets and liabilities of consolidated VIEs recorded on the accompanying consolidated balance sheets at March 31, 2022 and 2023: Consolidated VIEs Consolidated assets At March 31, 2022: Total Cash and due from banks Interest-earning deposits in other banks Trading account assets Investment securities Loans All other assets (in millions) Asset-backed conduits ¥ 6,115,286 ¥ 114,679 ¥ 24,959 ¥ 30,114 ¥ 906,109 ¥ 5,016,254 ¥ 23,171 Investment funds 538,336 578 28,021 351,806 55,567 — 102,364 Special purpose entities created for structured financing 192,200 1,694 5,463 7,294 — 119,002 58,747 Repackaged instruments 342,771 4,798 — 134,387 111,711 88,209 3,666 Securitization of the MUFG Group’s assets 10,544,934 — 1,204 — — 10,526,124 17,606 Trust arrangements 8,581,448 — — 760,960 1,303,063 6,517,421 4 Other 67,650 465 3,910 22,110 15,684 3,496 21,985 Total consolidated assets before elimination 26,382,625 122,214 63,557 1,306,671 2,392,134 22,270,506 227,543 The amounts eliminated in consolidation (7,424,058) (115,486) (36,175) (54,363) (567,242) (6,619,044) (31,748) Total consolidated assets ¥ 18,958,567 ¥ 6,728 ¥ 27,382 ¥ 1,252,308 ¥ 1,824,892 ¥ 15,651,462 ¥ 195,795 Consolidated liabilities Total Deposits Other short-term borrowings Long-term debt All other liabilities (in millions) Asset-backed conduits ¥ 6,091,830 ¥ — ¥ 4,443,656 ¥ 1,337,938 ¥ 310,236 Investment funds 29,368 — — 6,497 22,871 Special purpose entities created for structured financing 101,814 — — 95,218 6,596 Repackaged instruments 345,606 — 22,791 248,535 74,280 Securitization of the MUFG Group’s assets 10,569,281 — — 10,102,964 466,317 Trust arrangements 8,581,731 7,063,850 683,346 — 834,535 Other 63,126 — 2,268 39,511 21,347 Total consolidated liabilities before elimination 25,782,756 7,063,850 5,152,061 11,830,663 1,736,182 The amounts eliminated in consolidation (15,116,977) (756) (2,590,224) (11,378,021) (1,147,976) The amount of liabilities with recourse to the general credit of the MUFG Group (10,081,747) (7,063,094) (2,522,255) (3,411) (492,987) Liabilities of consolidated VIEs for which creditors or beneficial interest holders do not have recourse to the general credit of the MUFG Group ¥ 584,032 ¥ — ¥ 39,582 ¥ 449,231 ¥ 95,219 Consolidated VIEs Consolidated assets At March 31, 2023: Total Cash and due from banks Interest-earning deposits in other banks Trading account assets Investment securities Loans All other assets (in millions) Asset-backed conduits ¥ 7,388,845 ¥ 71,649 ¥ 34,521 ¥ 47,606 ¥ 1,027,862 ¥ 6,185,514 ¥ 21,693 Investment funds 1,331,962 — 46,157 359,777 65,204 — 860,824 Special purpose entities created for structured financing 248,952 — 2,593 8,624 — 135,606 102,129 Repackaged instruments 243,513 7,882 — 167,007 53,617 15,007 — Securitization of the MUFG Group’s assets 10,389,398 — 1,434 — — 10,371,275 16,689 Trust arrangements 8,176,795 — — 833,864 1,514,530 5,828,397 4 Other 62,109 584 3,952 14,606 16,159 2,822 23,986 Total consolidated assets before elimination 27,841,574 80,115 88,657 1,431,484 2,677,372 22,538,621 1,025,325 The amounts eliminated in consolidation (6,739,954) (71,872) (36,626) (63,556) (600,635) (5,940,036) (27,229) Total consolidated assets ¥ 21,101,620 ¥ 8,243 ¥ 52,031 ¥ 1,367,928 ¥ 2,076,737 ¥ 16,598,585 ¥ 998,096 Consolidated liabilities Total Deposits Other short-term borrowings Long-term debt All other liabilities (in millions) Asset-backed conduits ¥ 7,364,030 ¥ — ¥ 5,587,813 ¥ 1,367,234 ¥ 408,983 Investment funds 830,751 — 817,292 7,407 6,052 Special purpose entities created for structured financing 127,768 — — 109,352 18,416 Repackaged instruments 245,829 — — 230,285 15,544 Securitization of the MUFG Group’s assets 10,418,160 — — 10,154,662 263,498 Trust arrangements 8,176,907 6,408,837 840,690 — 927,380 Other 56,902 — 1,456 31,900 23,546 Total consolidated liabilities before elimination 27,220,347 6,408,837 7,247,251 11,900,840 1,663,419 The amounts eliminated in consolidation (16,102,106) (302) (3,696,647) (11,469,378) (935,779) The amount of liabilities with recourse to the general credit of the MUFG Group (10,503,305) (6,408,535) (3,505,172) (25,033) (564,565) Liabilities of consolidated VIEs for which creditors or beneficial interest holders do not have recourse to the general credit of the MUFG Group ¥ 614,936 ¥ — ¥ 45,432 ¥ 406,429 ¥ 163,075 In general, the creditors or beneficial interest holders of consolidated VIEs have recourse not only to the assets of those VIEs of which they are creditors or beneficial interest holders, but also to other assets of the MUFG Group, since the MUFG Group is also contractually required to provide credit enhancement or program-wide liquidity to these VIEs. The following tables present the total assets of non-consolidated VIEs, the maximum exposure to loss resulting from the MUFG Group’s involvement with non-consolidated VIEs and the assets and liabilities which relate to the MUFG’s variable interests in non-consolidated VIEs at March 31, 2022 and 2023: Non-consolidated VIEs On-balance sheet assets On-balance sheet At March 31, 2022: Total assets Maximum Total Trading Investment Loans All Total All other (in millions) Asset-backed conduits ¥ 27,325,711 ¥ 6,010,143 ¥ 4,858,210 ¥ — ¥ 1,756,122 ¥ 3,102,088 ¥ — ¥ 520 ¥ 520 Investment funds 112,262,392 3,352,266 2,622,407 328,963 622,967 1,628,737 41,740 4,507 4,507 Special purpose entities created for structured financing 42,312,881 4,829,867 3,275,008 234,384 20,854 3,012,252 7,518 25,424 25,424 Repackaged instruments 7,533,839 3,627,418 3,448,224 563,524 2,424,602 373,834 86,264 1,590 1,590 Other 74,119,635 3,474,163 2,402,341 170,859 7,552 2,139,751 84,179 28,128 28,128 Total ¥ 263,554,458 ¥ 21,293,857 ¥ 16,606,190 ¥ 1,297,730 ¥ 4,832,097 ¥ 10,256,662 ¥ 219,701 ¥ 60,169 ¥ 60,169 Non-consolidated VIEs On-balance sheet assets On-balance sheet At March 31, 2023: Total assets Maximum Total Trading Investment Loans All Total All other (in millions) Asset-backed conduits ¥ 41,001,958 ¥ 8,062,589 ¥ 6,384,079 ¥ 21,719 ¥ 2,205,877 ¥ 4,142,995 ¥ 13,488 ¥ 10,823 ¥ 10,823 Investment funds 55,386,213 4,930,989 3,446,109 262,312 120,436 2,710,177 353,184 27,606 27,606 Special purpose entities created for structured financing 54,543,066 5,864,814 3,907,598 80,382 39,357 3,749,670 38,189 208,100 208,100 Repackaged instruments 9,034,058 4,372,581 4,117,969 944,795 2,641,384 386,793 144,997 2,230 2,230 Other 87,989,676 3,989,548 2,761,087 146,286 7,552 2,523,976 83,273 46,354 46,354 Total ¥ 247,954,971 ¥ 27,220,521 ¥ 20,616,842 ¥ 1,455,494 ¥ 5,014,606 ¥ 13,513,611 ¥ 633,131 ¥ 295,113 ¥ 295,113 Maximum exposure to loss on each type of entity is determined based on the carrying amount of any on-balance sheet assets and any off-balance sheet liabilities held, net of any recourse liabilities. Therefore, the maximum exposure to loss represents the maximum loss the MUFG Group could possibly incur at each balance sheet date and does not reflect the likelihood of such a loss being incurred. The difference between the amount of on-balance sheet assets and the maximum exposure to loss primarily comprises the remaining undrawn commitments. Analysis of Each Transaction Category Asset-Backed Conduits This category primarily comprises the following: Multi-Seller Conduits (MUFG-sponsored Asset-Backed Commercial Paper (“ABCP”) Conduits and Other ABCP Conduits) The MUFG Group administers several conduits under asset-backed financing programs under which the conduits purchase financial assets, primarily trade accounts receivable, from the MUFG Group’s customers by issuing short-term financing instruments, primarily commercial paper, to third-party investors. Under the asset-backed financing programs, the MUFG Group acts as an agent for the conduits, which enter into agreements with the MUFG Group’s customers where the customers transfer financial assets to the conduits in exchange for monetary consideration. The MUFG Group also underwrites commercial paper for the conduits that is secured by the assets held by them and provides program-wide liquidity and credit enhancement facilities to the conduits. The MUFG Group receives fees related to the services it provides to the conduits and the program-wide liquidity and credit enhancement. The MUFG Group considers itself to be the primary beneficiary of the multi-seller conduits because, as an agent and sponsor, the MUFG Group has the power to direct activities of the conduits that most significantly impact the conduits’ economic performance and also has the obligation to absorb losses of the conduits that could potentially be significant to the conduits through the program-wide liquidity and credit enhancement. Consequently, the MUFG Group consolidates the conduits. In addition to the entities described above, the MUFG Group participates as a provider of financing to several conduits that are administered by third parties. Most of these conduits are established under a multi-seller asset-backed financing program and the MUFG Group provides financing along with other financial institutions. With respect to these conduits, the MUFG Group is not considered as the primary beneficiary because the MUFG Group’s participation in the conduits is only to provide financing along with other third-party financial institutions and it does not have the power to direct the activities of the conduits. Consequently, the MUFG Group does not consolidate the conduits. Asset-Backed Conduits (MUFG-sponsored Asset-Backed Loan (“ABL”) Programs and Other Programs) The MUFG Group administers several conduits under asset-backed financing programs where the MUFG Group provides financing to fund the conduits’ purchases of financial assets, comprising primarily trade accounts receivable, from its customers. The MUFG Group acts as an agent and sponsor for the conduits, which enter into agreements with the MUFG Group’s customers where the customers transfer assets to the conduits in exchange for monetary consideration. In most cases, the MUFG Group is the sole provider of financing that is secured by the assets held by the conduits. The MUFG Group considers itself to be the primary beneficiary of the conduits because, as an agent and sponsor for the conduits, the MUFG Group has the power to direct activities of the conduits, such as selection of the assets to be purchased and condition for purchases, and debt collection from the original obligors, that most significantly impact the conduits’ economic performance, and also has the obligation to absorb losses of the conduits that could potentially be significant to the conduits through financing it provides. Consequently, the MUFG Group consolidates the conduits. In addition, the MUFG Group is involved with entities, which take in most cases the form of a trust, where originators of financial assets, which primarily comprise lease receivables, entrust the assets with trust banks and receive beneficial certificates of trusts in exchange. The originators then transfer the beneficiary certificates to the MUFG Group in exchange for cash. The originators of the financial assets entrusted continue to be involved in the assets as servicers. Because the originators are deemed to have the power to direct activities of the entities that most significantly impact the entities’ economic performance through their role as a servicer, the MUFG Group is not considered as the primary beneficiary of these entities. Consequently, the MUFG Group does not consolidate these entities. The MUFG Group also participates as a provider of financing to the ABL programs that are managed by third parties. The MUFG Group is not considered as the primary beneficiary of the entities used in these programs as the MUFG Group’s participation in the entities is only to provide financing along with other third parties and it does not have the power to direct the activities of the entities. Consequently, the MUFG Group does not consolidate the entities used in these programs. Investment Funds This category primarily comprises the following: Corporate Recovery Funds These entities are established by fund managers, which are unrelated to the MUFG Group, for the purpose of investing in debt or equity instruments issued by distressed companies. After investment, the fund managers work closely with the management of the entities and attempt to enhance corporate value by various means including corporate restructuring and reorganization. Their exit strategies include, among others, sales to others and initial public offerings. Typically, these entities take the form of a limited partnership which is entirely funded by general and limited partner interests. These partnerships are considered as VIEs unless the limited partners hold substantive kick-out rights or participating rights. The MUFG Group mostly serves as a limited partner in corporate recovery funds that are considered as VIEs, and does not have the power to direct the activities of these funds that most significantly impact the economic performance of these funds. Therefore, the MUFG Group does not consider itself to be the primary beneficiary of these funds and does not consolidate them. Private Equity Funds The MUFG Group is involved in venture capital funds that are established by either the MUFG Group’s entities or fund managers unrelated to the MUFG Group. These entities have specific investment objectives in connection with their acquisition of equity interests, such as providing financing and other support to start-up businesses, medium and small entities in a particular geographical area, and to companies with certain technology or companies in a high-growth industry. These entities typically take the form of a limited partnership and usually are entirely funded by general and limited partner interests. These partnerships are considered as VIEs unless the limited partners hold substantive kick-out rights or participating rights. The MUFG Group participates in these partnerships as a general partner or limited partner. The MUFG Group consolidates these funds, which are considered as VIEs, if the MUFG Group has the power to direct the activities of these funds that most significantly impact the economic performance of these funds, and also has the obligation to absorb losses of these funds that could potentially be significant to these funds or the right to receive benefits from these funds that could potentially be significant to these funds. Investment Trusts The MUFG Group invests in investment trusts that are professionally managed collective investment schemes which pool money from many investors and invest in, among others, equity and debt securities. Most of these funds take the form of a trust where there is a separation in investment decisions, which is assumed by an investment manager who has no investment in a trust, and ownership through beneficiary interests issued by a trust are owned by investors. Therefore, these investment trusts are considered as VIEs. The MUFG Group consolidates these funds if the MUFG Group has the power to direct the activities of these funds that most significantly impact the economic performance of these funds, and also has the obligation to absorb losses of these funds that could potentially be significant to these funds or the right to receive benefits from these funds that could potentially be significant to these funds. Buy-out Financing Vehicles The MUFG Group provides financing to buy-out vehicles. The buy-out vehicles are established by equity investments from, among others, private equity funds or the management of target companies for the purpose of purchasing the equity shares of target companies. Along with other financial institutions, the MUFG Group provides financing to the buy-out vehicles in the form of loans. While the buy-out vehicles’ equity is normally substantive in its amount and the rights and obligations associated with it, in some cases, the vehicles have equity that is insufficient to absorb expected variability primarily because the amount provided by equity investors is nominal in nature. These vehicles engage in non-investment activities, and are considered as VIEs. In most cases, the MUFG Group’s participation in these vehicles is only to provide financing to the vehicles, and the power to direct the activities that most significantly impact the economic performance of the vehicles is held by the management of target companies. As a result, the MUFG Group is not considered as the primary beneficiary of these vehicles and does not consolidate them. Special Purpose Entities Created for Structured Financing This category primarily comprises the following: Leasing Transaction Vehicles These entities are established to raise funds to purchase or build equipment and machinery including, among others, commercial vessels, passenger and cargo aircraft, and production equipment for the purpose of leasing them to lessees who use the equipment and machinery as part of their business operations. These entities typically take the form of a limited partnership or a special purpose company where they fund their purchases of equipment and machinery via senior and subordinate financing. When entities take the form of a limited partnership, these entities are considered as VIEs unless limited partners hold substantive kick-out rights or participating rights. The entities considered as VIEs are typically funded only by senior financing or there is a guarantee provided to the senior financing by parties unrelated to those providing the senior financing. In most cases, the MUFG Group participates in the senior financing and does not participate in the subordinate financing or provide guarantees. Generally, because the MUFG Group’s participation in these entities is only to provide financing, it does not have the power to direct the activities of the entities that most significantly impact the economic performance of the entities. Therefore, the MUFG Group does not consider itself to be the primary beneficiary of these entities and does not consolidate them, except for limited circumstances where the MUFG Group is directly involved with the structuring of the transaction and has the power to direct the activities of the entities that most significantly impact the economic performance of the entities. Project Financing Vehicles These entities are established to raise funds in connection with, among others, production of natural resources, construction and development of urban infrastructure (including power plants and grids, highways and ports), and the development of real estate properties or complexes. These projects typically involve special purpose companies which issue senior and subordinate financing to raise funds in connection with the various projects. The subordinate financing is usually provided by parties that will ultimately make use of the assets constructed or developed. By contrast, the senior financing is typically provided by financial institutions, including the MUFG Group. Because the MUFG Group’s participation in these entities is only to provide financing, it does not have the power to direct the activities that most significantly impact the economic performance of these entities. Therefore, the MUFG Group is not considered as the primary beneficiary of these entities and does not consolidate them. Sale-and-Leaseback Vehicles The MUFG Group is involved with vehicles that acquire assets, primarily real estate, from the MUFG Group’s customers and other unrelated parties where the sellers of the assets continue to use the assets through leaseback agreements. These vehicles typically take the form of a limited partnership, and are considered as VIEs unless the limited partners hold substantive kick-out rights or participating rights. The subordinated financing of these vehicles considered as VIEs is usually provided by the sellers of the assets, with the MUFG Group providing senior financing for the vehicles. Because the MUFG Group’s participation in these vehicles is only to provide senior financing, it does not have the power to direct the activities that most significantly impact the economic performance of these vehicles. Therefore, the MUFG Group is not considered as the primary beneficiary and does not consolidate them. Securitization of Client Real Estate Properties These entities are established for the purpose of securitizing real estate properties held by the MUFG Group’s customers. In most cases, these entities take the form of a limited partnership or a special purpose company. When entities take the form of a limited partnership, these entities are considered as VIEs unless the limited partners hold substantive kick-out rights or participating rights. The entities considered as VIEs are typically funded by senior and subordinated financing where the original owners of the real estate properties provide the subordinated financing, primarily in the form of partnership interests or subordinated notes, and financial institutions, including the MUFG Group, provide senior financing in the form of senior loans. Because the MUFG Group’s participation in these vehicles is only to provide a portion of senior financing, it does not have the power to direct the activities that most significantly impact the economic performance of these entities. Therefore, the MUFG Group is not considered as the primary beneficiary and does not consolidate these entities. Repackaged Instruments This category primarily comprises the following: Investments in Financially-Engineered Products The MUFG Group is involved in special purpose entities that have been established to issue financial products through the engineering and repackaging of existing financial instruments such as collateralized debt obligations (“CDOs”). These entities are considered as VIEs because the holders of the equity investment at risk do not have the power to direct the activities that most significantly impact their economic performance. These entities are generally arranged and managed by parties that are not related to the MUFG Group. The MUFG Group’s involvement with the entities arranged and managed by third parties is for investment purposes. In these cases, the MUFG Group participates as one of many other investors and the MUFG Group typically holds investments in senior tranches or tranches with high credit ratings. Therefore, the MUFG Group does not have the power to direct activities of the entities that most significantly impact the entities’ economic performance, and thus is not considered as the primary beneficiary of these entities and does not consolidate these entities. In certain instances, special purpose entities have been established and are managed by the MUFG Group. The MUFG Group’s involvement includes establishing and arranging the transaction and underwriting securities issued by the entities to general investors. For these entities, the MUFG Group has the power to direct activities that most significantly impact the economic performance and it has the obligation to absorb losses or receive benefits that could potentially be significant to the entities. As such, the MUFG Group considers itself as the primary beneficiary of these entities and consolidates them. Investments in Securitized Financial Instruments The MUFG Group holds investments in special purpose entities that issue securitized financial products. The assets held by the entities include credit card receivables and residential mortgage loans. These entities are established and managed by parties that are unrelated to the MUFG Group and the MUFG Group’s involvement with these entities is for its own investment purposes. In all cases, the MUFG Group participates as one of many other investors and the MUFG Group does not have the power to direct activities of the entities that most significantly impact the entities’ economic performance. Therefore, the MUFG Group is not considered as the primary beneficiary of these entities and does not consolidate them. Securitization of the MUFG Group’s Assets This category primarily comprises the following: Securitization for issuing interests or financing The MUFG Group establishes entities to securitize its own financial assets that include, among others, corporate and retail loans and lease receivables. The entities used for securitization, which typically take the form of a special purpose company or a trust, are established by the MUFG Group and, in most cases, issue senior and subordinate interests or financing. After securitization, the MUFG Group typically continues to service securitized assets as a servicer. The MUFG Group may also retain subordinate interests or financing or other interests. The MUFG Group is considered as the primary beneficiary and consolidates the entities used for securitization since it has the obligation to absorb losses through subordinate interests, and also has the power for determining and implementing policies as servicer that give it the ability to manage the entities’ assets that become delinquent or are in default in order to improve the economic performance of the entities. Eligible beneficiary interests in housing loan trusts The MUFG Group establishes trusts, which acquire the MUFG Group’s housing loans and in turn issue beneficiary interests to the MUFG Group, to pledge these beneficiary interests as collateral for borrowings from the Bank of Japan, as a result of the decision by the Bank of Japan on June 30, 2016 to accept these beneficial interests as collateral in the same way as it does for Japanese national government bonds. The MUFG Group is considered as the primary beneficiary and consolidates the trusts since it has the obligation to absorb losses through beneficiary interests, and also has the power for determining and implementing policies as servicer that give it the ability to manage housing loans owned by the trusts that become delinquent or are in default in order to improve the economic performance of the trusts. Trust Arrangements The MUFG Group offers, primarily through Mitsubishi UFJ Trust and Banking, a variety of trust products and services including securities investment trusts, pension trusts and trusts used as securitization vehicles. In a typical trust arrangement, however, the MUFG Group manages and administers assets on behalf of the customers in an agency, fiduciary and trust capacity and does not assume risks associated with the entrusted assets. The trusts are generally considered as VIEs because the trust beneficiaries, who provide all of the equity at risk, usually do not have power to direct the activities that most significantly impact its economic performance in the arrangements. The MUFG Group, however, is not considered as the primary beneficiary, mainly, except for the case mentioned below, because it merely receives fees for compensation for its services on terms that are customary for these activities and the fees are insignificant relative to the total amount of the trusts’ economic performance and variability. Therefore, the MUFG Group does not consolidate these entities. With respect to the jointly operated designated money in trusts, Mitsubishi UFJ Trust and Banking pools money from investors and determines how best to invest it. In addition, certain investors, such as money reserve funds and investment funds, place excess funds in the jointly operated designated money trusts. Mitsubishi UFJ Trust and Banking typically invests in high-quality financial assets, including government bonds, corporate bonds and corporate loans including loans to Mitsubishi UFJ Trust and Banking and receives fees as compensation for services. In this role as a sponsor of these trusts’ Mitsubishi UFJ Trust and Banking provides guarantees under which it is required to compensate a loss on the stated principal of the trust beneficial interests. Mitsubishi UFJ Trust and Banking is considered as the primary beneficiary of these trusts’ because it is exposed to a potentially significant amount of losses and also has the power to direct activities of these trusts’ that most significantly impact their economic performance. Upon consolidation of the trusts, the certificates issued to the investors are accounted for as deposit liabilities as the products are structured and marketed to customers similar to Mitsubishi UFJ Trust and Banking’s term deposit products. Mitsubishi UFJ Trust and Banking considers the likelihood of incurring losses on the stated principal guarantee to be highly remote. In the trusts’ operational history that extends over decades, the stated principal guarantee has never been called upon. The variability in fair value of the net assets of the trusts has been primarily affected by the fluctuations in interest rates, and the majority of such variability has been absorbed by investors or trust beneficiaries. Other This category primarily comprises the following: Financing Vehicles of the MUFG Group’s Customers The MUFG Group is involved with several entities that are established by the MUFG Group’s customers. These entities borrow funds from financial institutions and extend loans to their group entities. These entities effectively work as fund-raising vehicles for their respective group entities and enable the groups to achieve efficient financing by integrating their financing activities into a single entity. In all cases, the MUFG Group is not considered as the primary beneficiary because the MUFG Group’s participation in these entities is only to provide financing, and the customers effectively hold the power to direct activities of these entities that most significantly impact the economic performance of the entities. Consequently, the MUFG Group does not consolidate these entities. Funding Vehicles The MUFG Group has established several wholly-owned off-shore vehicles which issue securities, typically preferred stock that is fully guaranteed by the MUFG Group, to investors unrelated to the MUFG Group to fund purchases of debt instruments issued by the MUFG Group. These entities are considered as VIEs because the MUFG Group’s investment in the vehicles’ equity is not considered at risk and substantive as the entire amount raised by the vehicles was used to purchase debt instruments issued by the MUFG Group. Because the MUFG Group does not have variable interests in these vehicles, the MUFG Group does not consolidate these entities. Troubled Borrowers

Contingent Liabilities

Contingent Liabilities	12 Months Ended
	Mar. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Contingent Liabilities	CONTINGENT LIABILITIES Repayment of Excess Interest The MUFG Group maintains an allowance for repayment of excess interest based on an analysis of past experience of reimbursement of excess interest, borrowers’ profile, recent trend of borrowers’ claims for reimbursement, and management future forecasts. Management believes that the provision for repayment of excess interest is adequate and the allowance is at the appropriate amount to absorb probable losses, so that the impact of future claims for reimbursement of excess interest will not have a material adverse effect on the MUFG Group’s financial position and results of operations. The allowance for repayment of excess interest established by MUFG’s consumer finance subsidiaries, which was included in Other liabilities, was ¥21,120 million and ¥12,113 million as of March 31, 2022 and 2023, respectively. Provision (reversal) related to the allowance is included in Other non-interest expenses in the accompanying consolidated statements of operations. For the fiscal years ended March 31, 2021, 2022 and 2023, there was a negative impact of nil, ¥23,332 million and nil, respectively, on Equity in earnings of equity method investees—net in the accompanying consolidated statements of operations. Litigation

Fees and Commissions Income

Fees and Commissions Income	12 Months Ended
	Mar. 31, 2023
Revenue from Contract with Customer [Abstract]
Fees and Commissions Income	FEES AND COMMISSIONS INCOME Disaggregation of Contract Revenue Details of fees and commissions income for the fiscal years ended March 31, 2021, 2022 and 2023 were as follows: 2021 2022 2023 (in millions) Fees and commissions on deposits ¥ 50,131 ¥ 51,032 ¥ 49,785 Fees and commissions on remittances and transfers 165,288 157,236 147,582 Fees and commissions on foreign trading business 79,353 56,344 69,010 Fees and commissions on credit card business 199,625 207,080 230,386 Fees and commissions on security-related services 244,017 264,530 224,900 Fees and commissions on administration and management services for investment funds 235,497 286,549 282,282 Trust fees 125,658 133,322 131,069 Guarantee fees (1) 43,889 45,849 47,986 Insurance commissions 42,117 42,353 49,420 Fees and commissions on real estate business 48,110 65,611 68,407 Other fees and commissions (2) 293,598 348,957 400,810 Total ¥ 1,527,283 ¥ 1,658,863 ¥ 1,701,637 Notes: (1) Guarantee fees are not within the scope of the guidance on revenue from contracts with customers. (2) Other fees and commissions include non-refundable financing related fees that are not within the scope of the guidance on revenue from contracts with customers. The following is an explanation of the relationship with revenue information disclosed for each reportable segment. These revenues from contracts with customers are related to various reportable segments disclosed in Note 29. The business segment information is derived from the internal management reporting system used by management to measure the performance of the MUFG Group’s business segments. In addition, the business segment information is primarily based on the financial information prepared in accordance with Japanese GAAP as adjusted in accordance with internal management accounting rules and practices. Further, the format and information as disclosed in Note 29 are not consistent with the accompanying consolidated financial statements prepared on the basis of U.S. GAAP. For example, management does not use information on segments’ gross revenue to allocate resources and assess performance. The majority of fees and commissions on deposits are attributable to Digital Service Business Group (“DS”) and Global Commercial Banking Business Group (“GCB”) with no significant concentration in any particular segments. The business activities relevant to fees and commissions on remittances and transfers are attributable to DS, Retail & Commercial Banking Business Group (“R&C”), Japanese Corporate Investment Banking Business Group (“JCIB”), Global Corporate Investment Banking Business Group (“GCIB”), and GCB with no significant concentration in any particular segments. The business activities relevant to fees and commissions on foreign trading business are attributable to DS, R&C, JCIB, GCIB, and GCB with no significant concentration in any particular segments. The business activities relevant to fees and commissions on credit card business are substantially attributable to DS. The majority of fees and commissions on security-related services are from the business activities relevant to R&C, with JCIB and GCIB providing a smaller impact. The business activities relevant to fees and commissions on administration and management services for investment funds are substantially attributable to Asset Management & Investor Service Business Group (“AM/IS”). The business activities relevant to trust fees are attributable to R&C, JCIB, and AM/IS with no significant concentration in any particular segments. The majority of insurance commissions are from the business activities relevant to DS, R&C, JCIB, and GCB with no significant concentration in any particular segments.

Trading Account Profits and Los

Trading Account Profits and Losses	12 Months Ended
	Mar. 31, 2023
Trading Account Profits And Losses [Abstract]
Trading Account Profits and Losses	TRADING ACCOUNT PROFITS AND LOSSES The MUFG Group performs trading activities through market-making, sales and arbitrage, while maintaining risk levels within appropriate limits in accordance with its risk management policy. The MUFG Group has trading account securities and trading derivative assets and liabilities for this purpose. In addition, the trading account securities include foreign currency-denominated debt securities such as foreign government or official institution bonds, corporate bonds and mortgage-backed securities, which are mainly comprised of securities measured at fair value under the fair value option. Net trading gains (losses) for the fiscal years ended March 31, 2021, 2022 and 2023 were comprised of the following: 2021 2022 2023 (in millions) Interest rate and other derivative contracts ¥ (429,586) ¥ (102,122) ¥ 238,162 Trading account securities, excluding derivatives 19,218 (722,298) (1,030,260) Trading account losses—net (410,368) (824,420) (792,098) Foreign exchange derivative contracts (1) (79,559) (44,693) 57,914 Net trading losses ¥ (489,927) ¥ (869,113) ¥ (734,184) Note: (1) Gains (losses) on foreign exchange derivative contracts are included in Foreign exchange gains—net in the accompanying consolidated statements of operations. Foreign exchange gains—net in the accompanying consolidated statements of operations are also comprised of foreign exchange losses other than derivative contracts and foreign exchange gains related to the fair value option.

Business Segments

Business Segments	12 Months Ended
	Mar. 31, 2023
Segment Reporting [Abstract]
Business Segments	BUSINESS SEGMENTS The reportable segments of the MUFG Group are subject to the periodical review by the Executive Committee, which represents the MUFG Group’s chief operating decision maker, to determine the allocation of management resources and assess performance. The MUFG Group has established its business units according to the characteristics of customers and the nature of the underlying business. Each business unit engages in business activities based on comprehensive strategies developed for and aimed at respective targeted customers and businesses. The business segment information is primarily based on the financial information prepared in accordance with Japanese GAAP as adjusted in accordance with internal management accounting rules and practices. Accordingly, the format and information are not consistent with the accompanying consolidated financial statements prepared on the basis of U.S. GAAP. A reconciliation is provided for the total amounts of segments’ operating profit with income before income tax expense under U.S. GAAP. The MUFG Group does not use information on the segments’ total assets to allocate its resources and assess performance. Accordingly, business segment information on total assets is not presented. However, in order to ensure more efficient management of resources, and to strengthen controls on profits and losses in each business group, the MUFG Group has allocated fixed assets of both MUFG Bank on a stand-alone basis and Mitsubishi UFJ Trust and Banking on a stand-alone basis to each business unit of such subsidiaries as of March 31, 2022. Accordingly, such fixed assets allocated to business groups are presented below. See Note 30 for financial information relating to the MUFG Group’s operations by geographic area. The geographic financial information is consistent with the basis of the accompanying consolidated financial statements. The MUFG Group integrated the operations of its consolidated subsidiaries into seven business segments.—Digital Service, Retail & Commercial Banking, Japanese Corporate & Investment Banking, Global Commercial Banking, Asset Management & Investor Services, Global Corporate & Investment Banking, and Global Markets. The following is a brief explanation of the MUFG Group’s business segments: Digital Service Business Group —Covers digital-based non-face-to-face businesses servicing “mass-segment” customers, or retail customers and small and medium-sized enterprise customers, of Mitsubishi UFJ NICOS, other consumer finance companies, and MUFG Bank in Japan. Retail & Commercial Banking Business Group —Covers the domestic retail and commercial banking businesses. This business group mainly offers retail customers (with a strategic focus on high net-worth individuals) and small and medium-sized enterprise customers in Japan an extensive array of commercial banking, trust banking and securities products and services. Japanese Corporate & Investment Banking Business Group —Covers the large Japanese corporate businesses. This business group offers large Japanese corporations advanced financial solutions designed to respond to their diversified and globalized needs and to contribute to their business and financial strategies through the global network of the MUFG group companies. Global Commercial Banking Business Group —Covers the retail and commercial banking businesses of Krungsri and Bank Danamon. This business group offers a comprehensive array of financial products and services such as loans, deposits, fund transfers, investments and asset management services for local retail, small and medium-sized enterprise, and corporate customers across the Asia-Pacific region. Asset Management & Investor Services Business Group —Covers the asset management and asset administration businesses of Mitsubishi UFJ Trust and Banking, MUFG Bank and First Sentier Investors. By integrating the trust banking expertise of Mitsubishi UFJ Trust and Banking and the global strengths of MUFG Bank, the business group offers a full range of asset management and administration services for corporations and pension funds, including pension fund management and administration, advice on pension structures, and payments to beneficiaries, and also offers investment trusts for retail customers. Global Corporate & Investment Banking Business Group —Covers the global corporate, investment and transaction banking businesses of MUFG Bank and Mitsubishi UFJ Securities Holdings. Through a global network of offices and branches, this business group provides large non-Japanese corporate and financial institution customers outside Japan with a comprehensive set of solutions that meet their increasingly diverse and sophisticated financing needs. Global Markets Business Group —Covers the customer business and the treasury operations of MUFG Bank, Mitsubishi UFJ Trust and Banking and Mitsubishi UFJ Securities Holdings. The customer business includes sales and trading in fixed income instruments, currencies, equities and other investment products as well as origination and distribution of financial products. The treasury operations include asset and liability management as well as global investments for the MUFG Group. Other —Consists mainly of the corporate centers of MUFG, MUFG Bank, Mitsubishi UFJ Trust and Banking and Mitsubishi UFJ Morgan Stanley Securities. The elimination of duplicated amounts of net revenues among business segments is also reflected in Other. The MUFG Group made modifications to its internal management accounting rules and practices, effective April 1, 2022, including reallocation of au Kabucom Securities Co., Ltd., an internet securities subsidiary, to the Digital Service Business Group from the Retail & Commercial Banking Business Group as well as updates to internal booking rules relating to certain net fees and other net revenue in the customer business groups and corresponding adjustments in Other. These changes had the following impact on its previously reported business segment information for the fiscal years ended March 31, 2021 and 2022: • increasing the operating profits of the Digital Service Business Group, the Japanese Corporate & Investment Banking Business Group, the Global Corporate & Investment Banking Business Group and the Global Commercial Banking Business Group by ¥8.2 billion, ¥5.7 billion, ¥4.9 billion and ¥0.8 billion, respectively, for the fiscal year ended March 31, 2021, • reducing the operating profits of the Retail & Commercial Banking Business Group, Other, the Global Markets Business Group and the Asset Management & Investor Services Business Group by ¥9.1 billion, ¥7.4 billion, ¥2.9 billion and ¥0.2 billion, respectively, for the fiscal year ended March 31, 2021, • increasing the operating profits of the Digital Service Business Group, the Global Corporate & Investment Banking Business Group, the Japanese Corporate & Investment Banking Business Group and the Global Commercial Banking Business Group by ¥10.3 billion, ¥6.5 billion, ¥0.9 billion and ¥0.3 billion, respectively, for the fiscal year ended March 31, 2022, and • reducing the operating profits of the Retail & Commercial Banking Business Group, Other, the Global Markets Business Group and the Asset Management & Investor Services Business Group by ¥11.0 billion, ¥3.9 billion, ¥3.0 billion and ¥0.1 billion, respectively, for the fiscal year ended March 31, 2022. Prior period business segment information has been restated to enable comparison between the relevant amounts for the fiscal years ended March 31, 2021, 2022 and 2023. Customer Business Global Other Total Digital Retail & Japanese Global Asset Global Total (in billions) Fiscal year ended March 31, 2021: Net revenue: ¥ 744.7 ¥ 550.3 ¥ 565.7 ¥ 778.7 ¥ 293.4 ¥ 438.7 ¥ 3,371.5 ¥ 640.3 ¥ (7.2) ¥ 4,004.6 BK and TB (1) : 255.5 373.2 453.5 1.0 99.4 274.7 1,457.3 386.3 34.2 1,877.8 Net interest income 223.4 165.9 187.4 3.3 5.5 138.2 723.7 166.9 80.8 971.4 Net fees 29.2 188.9 218.6 — 93.9 136.9 667.5 (2.4) (58.8) 606.3 Other 2.9 18.4 47.5 (2.3) — (0.4) 66.1 221.8 12.2 300.1 Other than BK and TB 489.2 177.1 112.2 777.7 194.0 164.0 1,914.2 254.0 (41.4) 2,126.8 Operating expenses 565.0 492.2 319.9 501.7 213.0 272.2 2,364.0 243.1 150.5 2,757.6 Operating profit (loss) ¥ 179.7 ¥ 58.1 ¥ 245.8 ¥ 277.0 ¥ 80.4 ¥ 166.5 ¥ 1,007.5 ¥ 397.2 ¥ (157.7) ¥ 1,247.0 Fiscal year ended March 31, 2022: Net revenue: ¥ 741.6 ¥ 584.6 ¥ 623.2 ¥ 771.7 ¥ 348.9 ¥ 540.1 ¥ 3,610.1 ¥ 427.0 ¥ 11.3 ¥ 4,048.4 BK and TB (1) : 257.2 390.3 496.8 1.9 106.3 362.2 1,614.7 203.4 53.2 1,871.3 Net interest income 219.3 166.8 231.6 1.9 9.3 172.2 801.1 231.5 120.0 1,152.6 Net fees 36.0 201.7 212.7 — 97.0 173.8 721.2 (8.7) (55.9) 656.6 Other 1.9 21.8 52.5 — — 16.2 92.4 (19.4) (10.9) 62.1 Other than BK and TB 484.4 194.3 126.4 769.8 242.6 177.9 1,995.4 223.6 (41.9) 2,177.1 Operating expenses 558.9 490.9 320.9 528.0 241.4 295.3 2,435.4 253.0 127.6 2,816.0 Operating profit (loss) ¥ 182.7 ¥ 93.7 ¥ 302.3 ¥ 243.7 ¥ 107.5 ¥ 244.8 ¥ 1,174.7 ¥ 174.0 ¥ (116.3) ¥ 1,232.4 Fixed assets (2) ¥ 140.6 ¥ 191.7 ¥ 155.8 ¥ 1.0 ¥ 13.3 ¥ 133.0 ¥ 635.4 ¥ 108.4 ¥ 550.3 ¥ 1,294.1 Fiscal year ended March 31, 2023: Net revenue: ¥ 747.6 ¥ 614.1 ¥ 805.7 ¥ 870.6 ¥ 360.8 ¥ 712.9 ¥ 4,111.7 ¥ 408.9 ¥ (4.8) ¥ 4,515.8 BK and TB (1) : 251.4 429.6 647.4 35.1 105.4 531.9 2,000.8 130.6 19.2 2,150.6 Net interest income 215.4 196.5 355.0 35.7 9.4 260.3 1,072.3 710.4 71.9 1,854.6 Net fees 32.9 200.5 230.6 — 96.0 243.1 803.1 (16.6) (50.0) 736.5 Other 3.1 32.6 61.8 (0.6) — 28.5 125.4 (563.2) (2.7) (440.5) Other than BK and TB 496.2 184.5 158.3 835.5 255.4 181.0 2,110.9 278.3 (24.0) 2,365.2 Operating expenses 533.2 456.8 331.1 580.3 255.7 336.9 2,494.0 271.8 172.4 2,938.2 Operating profit (loss) ¥ 214.4 ¥ 157.3 ¥ 474.6 ¥ 290.3 ¥ 105.1 ¥ 376.0 ¥ 1,617.7 ¥ 137.1 ¥ (177.2) ¥ 1,577.6 Fixed assets (2) ¥ 156.9 ¥ 201.9 ¥ 161.2 ¥ 1.1 ¥ 18.8 ¥ 171.2 ¥ 711.2 ¥ 110.6 ¥ 546.3 ¥ 1,368.1 Increase in fixed assets (3) ¥ 37.0 ¥ 41.9 ¥ 37.1 ¥ 0.6 ¥ 11.6 ¥ 23.4 ¥ 151.5 ¥ 23.2 ¥ 34.2 ¥ 208.9 Depreciation (3) ¥ 10.6 ¥ 21.1 ¥ 36.6 ¥ 0.2 ¥ 6.0 ¥ 35.2 ¥ 109.8 ¥ 28.3 ¥ 19.5 ¥ 157.6 Notes: (1) “BK and TB” is a sum of MUFG Bank on a stand-alone basis (BK) and Mitsubishi UFJ Trust and Banking on a stand-alone basis (TB). (2) Fixed assets in the above table are based on the financial information prepared in accordance with Japanese GAAP as adjusted in accordance with internal management accounting rules and practices, and it corresponds to the U.S. GAAP amounts of premises and equipment-net, intangible assets-net and goodwill of BK and TB. Fixed assets of MUFG and other consolidated subsidiaries and Japanese GAAP consolidation adjustments amounting to ¥1,286.1 billion as of March 31, 2022 and ¥1,210.2 billion as of March 31, 2023, respectively, are not allocated to each business segment when determining the allocation of management resources and assessing performance and, therefore, such amounts are not included in the table above. (3) These amounts are related to the fixed assets of BK and TB included in the table above. Reconciliation As set forth above, the measurement basis and the income and expense items of the internal management reporting system are different from the accompanying consolidated statements of operations. Therefore, it is impracticable to present reconciliations of all of the business segments’ information, other than operating profit, to corresponding items in the accompanying consolidated statements of operations. A reconciliation of operating profit and fixed assets under the internal management reporting system for the fiscal years ended March 31, 2021, 2022 and 2023 above to income before income tax expense shown in the accompanying consolidated statements of operations and the total amount of premises and equipment-net, intangible assets-net and goodwill are as follows: 2021 2022 2023 (in billions) Operating profit: ¥ 1,247 ¥ 1,232 ¥ 1,578 Provision for credit losses (484) (278) (8) Trading account losses—net (678) (1,174) (1,385) Equity investment securities gains (losses)—net 1,480 (109) (139) Debt investment securities gains (losses)—net (129) 139 517 Foreign exchange gains (losses)—net 9 (9) (33) Equity in earnings of equity method investees—net 356 437 398 Impairment of goodwill (148) — (34) Impairment of intangible assets (22) (33) (5) Reversal of (provision for) off-balance sheet credit instruments 57 (46) (21) Reversal of impairment (impairment) of assets held for sale — (134) 134 Loss on valuation adjustment for loans held for sale held by MUFG Union Bank — (3) (283) Gain on sale of MUFG Union Bank — — 558 Loss on pension buyout — — (84) Other—net (80) (81) (536) Income (loss) before income tax expense (benefit) ¥ 1,608 ¥ (59) ¥ 657 Fixed assets: ¥ — ¥ 1,294 ¥ 1,368 U.S. GAAP adjustments and other — 974 964 Premises and equipment-net, Intangible assets-net and Goodwill ¥ — ¥ 2,268 ¥ 2,332

Foreign Activities

Foreign Activities	12 Months Ended
	Mar. 31, 2023
Segments, Geographical Areas [Abstract]
Foreign Activities	FOREIGN ACTIVITIES Foreign operations include the business conducted by overseas offices, as well as international business conducted from domestic offices, principally several international banking-related divisions of MUFG Bank’s and Mitsubishi UFJ Trust and Banking’s head office in Tokyo, and involve various transactions with debtors and customers residing outside Japan. Close integration of the MUFG Group’s foreign and domestic activities makes precise estimates of the amounts of assets, liabilities, income and expenses attributable to foreign operations difficult and necessarily subjective. Assets, income and expenses attributable to foreign operations are allocated to geographical areas based on the domicile of the debtors and customers. Generally, interest rates with respect to funds borrowed and loaned between domestic and foreign operations are based on prevailing money market rates appropriate for the transactions. In general, the MUFG Group has allocated all direct expenses and a proportionate share of general and administrative expenses to income derived from foreign loans and other transactions by the MUFG Group’s foreign operations. The following table sets forth estimated total assets at March 31, 2021, 2022 and 2023, and estimated total revenue, total expense, income (loss) before income tax expense (benefit) and net income (loss) attributable to Mitsubishi UFJ Financial Group for the respective fiscal years then ended: Domestic Foreign Total Japan United States of America Europe Asia/ Oceania excluding Japan Other areas (1) (in millions) Fiscal year ended March 31, 2021: Total revenue (2) ¥ 3,348,733 ¥ 741,137 ¥ 356,112 ¥ 1,134,233 ¥ 329,568 ¥ 5,909,783 Total expense (3) 2,316,323 713,441 263,753 889,494 118,430 4,301,441 Income before income tax expense 1,032,410 27,696 92,359 244,739 211,138 1,608,342 Net income (loss) attributable to Mitsubishi UFJ Financial Group 627,138 (231,116) 74,230 366,880 280,166 1,117,298 Total assets at end of fiscal year 240,603,939 49,478,851 21,126,639 31,368,443 11,246,753 353,824,625 Fiscal year ended March 31, 2022: Total revenue (2) ¥ 2,160,509 ¥ 500,590 ¥ 67,687 ¥ 975,340 ¥ 221,601 ¥ 3,925,727 Total expense (3) 2,198,650 666,564 311,639 726,042 81,559 3,984,454 Income (loss) before income tax expense (benefit) (38,141) (165,974) (243,952) 249,298 140,042 (58,727) Net income (loss) attributable to Mitsubishi UFJ Financial Group (7,380) (498,205) (344,044) 506,621 259,688 (83,320) Total assets at end of fiscal year (4) 246,637,054 54,576,602 22,319,350 31,909,321 12,207,691 367,650,018 Fiscal year ended March 31, 2023: Total revenue (2) ¥ 2,617,973 ¥ 1,527,756 ¥ 173,013 ¥ 1,479,618 ¥ 508,472 ¥ 6,306,832 Total expense (3) 2,074,369 1,621,492 370,130 1,282,806 301,301 5,650,098 Income (loss) before income tax expense (benefit) 543,604 (93,736) (197,117) 196,812 207,171 656,734 Net income (loss) attributable to Mitsubishi UFJ Financial Group 616,243 113,038 (246,138) 9,074 107,691 599,908 Total assets at end of fiscal year 249,539,149 59,695,647 24,675,334 34,452,071 13,373,532 381,735,733 Notes: (1) Other areas primarily include Canada, Latin America, the Caribbean and the Middle East. (2) Total revenue is comprised of Interest income and Non-interest income. (3) Total expense is comprised of Interest expense, Provision for credit losses and Non-interest expense. (4) Total assets at the fiscal year ended March 31, 2022 in this table includes those relating to financial assets and liabilities of transferred business of MUFG Union Bank. See Note 2 for more information. The following is an analysis of certain asset and liability accounts related to foreign activities at March 31, 2022 and 2023: 2022 2023 (in millions) Cash and due from banks ¥ 1,050,661 ¥ 738,309 Interest-earning deposits in other banks 12,459,897 17,518,035 Total ¥ 13,510,558 ¥ 18,256,344 Trading account assets ¥ 26,849,102 ¥ 31,158,079 Investment securities ¥ 7,157,322 ¥ 11,456,886 Loans—net of unearned income, unamortized premiums and deferred loan fees ¥ 45,338,581 ¥ 50,981,148 Deposits ¥ 46,932,643 ¥ 52,278,932 Funds borrowed: Call money, funds purchased ¥ 306,053 ¥ 18,088 Payables under repurchase agreements 10,769,853 10,730,611 Payables under securities lending transactions 144,854 54,985 Other short-term borrowings 3,940,997 5,058,454 Long-term debt 1,596,146 1,530,782 Total ¥ 16,757,903 ¥ 17,392,920 Trading account liabilities ¥ 5,919,017 ¥ 8,611,974

Fair Value

Fair Value	12 Months Ended
	Mar. 31, 2023
Fair Value Disclosures [Abstract]
Fair Value	FAIR VALUE Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The guidance on fair value measurements also specifies a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value into three broad levels. The fair value hierarchy gives the highest priority to quoted prices in active markets and the lowest priority to unobservable inputs, for example, the reporting entity’s own data. Based on the observability of the inputs used in the valuation techniques, the following three-level hierarchy is specified by the guidance: • Level 1—Unadjusted quoted prices for identical instruments in active markets. • Level 2—Observable inputs other than Level 1 prices for substantially the full term of the instruments, such as quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; other inputs that are observable; or market-corroborated inputs. • Level 3—Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the instruments. A financial instrument’s categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The tables in this note except for Estimated Fair Value of Financial Instruments include the portion of the assets and liabilities held for sale. The MUFG Group has an established and documented process for determining fair values in accordance with the guidance. When available, quoted prices are used to determine fair value. If quoted prices are not available, fair value is based upon valuation techniques that use observable or unobservable inputs. The fair values of liabilities are determined by discounting future cash flows at a rate which incorporates the MUFG Group’s own creditworthiness. In addition, valuation adjustments may be made to ensure the financial instruments are recorded at fair value. These adjustments include, but are not limited to, amounts that reflect counterparty credit quality, funding cost, liquidity risk and model risk. The following section describes the valuation techniques used by the MUFG Group to measure fair values of certain financial instruments. The discussion includes the general classification of such financial instruments in accordance with the fair value hierarchy, a brief explanation of the valuation techniques, the significant inputs to those valuation techniques, and any additional significant assumptions. Trading Account Assets and Liabilities—Trading Account Securities When quoted prices are available in an active market, the MUFG Group uses quoted prices to measure the fair values of securities and such securities are classified in Level 1 of the fair value hierarchy. Examples of Level 1 securities include certain Japanese and foreign government bonds, and marketable equity securities. When quoted prices are available but the securities are not traded in active markets, such securities are classified in Level 2 of the fair value hierarchy. These securities include certain Japanese government agency bonds, Japanese prefectural and municipal bonds, foreign government and official institution bonds, corporate bonds, residential mortgage-backed securities and equity securities. As for quoted prices provided by third-party vendors, independent price verification is performed by the MUFG group to determine the quality and reliability of the data for fair value measurement purposes. As part of its independent price verification procedures, the MUFG group obtains a sufficient understanding of the vendors’ pricing sources and valuation processes. Further, the MUFG group performs internal price verification procedures to ensure that the quoted prices provided from the third-party vendors are reasonable. Such verification procedures include comparison of pricing sources and analysis of variances beyond certain thresholds. When quoted prices are not available, the MUFG Group estimates fair values by using an internal model, quoted prices of securities with similar characteristics or non-binding prices obtained from independent third parties. Such securities include certain commercial paper, corporate bonds, asset-backed securities and residential mortgage-backed securities. For commercial paper, the MUFG Group estimates fair value using discounted cash flows. The cash flows are estimated in accordance with the terms of contracts and discounted using a discount rate based on the yield curve estimated from market interest rates appropriate to the securities. Commercial paper is generally classified in Level 2 of the fair value hierarchy. For corporate bonds, the MUFG Group estimates fair value using discounted cash flows. The cash flows are estimated in accordance with the terms of contracts and discounted using discount rates applicable to the maturity of the bonds, which are adjusted to reflect credit risk of issuers. Credit risk of issuers is reflected in the future cash flows being discounted by the interest rate applicable to the maturity of the bonds. Corporate bonds are classified in either Level 1, Level 2 or Level 3 of the fair value hierarchy, depending primarily on the significance of the adjustments to the unobservable input of credit worthiness. For residential mortgage-backed securities, the MUFG Group estimates fair value using non-binding prices obtained from independent third parties. Residential mortgage-backed securities are classified as level 2 unless otherwise significant unobservable input is used for the valuation. When there is less liquidity for securities or significant inputs used in the fair value measurements are unobservable, such securities are classified in Level 3 of the fair value hierarchy. Examples of such Level 3 securities include CLOs backed by general corporate loans, which are classified in asset-backed securities. The fair value of CLOs is measured by weighing the estimated fair value amounts from the internal model and the non-binding quotes from the independent broker-dealers. The weight of the quotes from independent broker-dealers is determined based on the result of inquiries with the broker-dealers to understand their basis of fair value calculation with consideration given to transaction volume. Key inputs to the internal model include projected cash flows through an analysis of underlying loans, probability of default which incorporates market indices such as LCDX (which is an index of loan credit default swaps), prepayment rates and discount rates reflecting liquidity premiums based on historical market data. Trading Account Assets and Liabilities—Derivatives Exchange-traded derivatives valued using quoted prices are classified in Level 1 of the fair value hierarchy. Examples of Level 1 derivatives include stock futures index and interest rate futures. However, the majority of the derivative contracts entered into by the MUFG Group are traded over-the-counter and valued using valuation techniques as there are no quoted prices for such derivatives. The valuation techniques and inputs vary depending on the types and contractual terms of the derivatives. The principal valuation techniques used to value derivatives include discounted cash flows, the Black-Scholes model and the Hull-White model. The key inputs include interest rate yield curve, foreign currency exchange rate, volatility, credit quality of the counterparty or the MUFG Group and spot price of the underlying. These models are commonly accepted in the financial industry and key inputs to the models are generally readily observable in an active market. Derivatives valued using such valuation techniques and inputs are generally classified in Level 2 of the fair value hierarchy. Examples of such Level 2 derivatives include plain-vanilla interest rate swaps, foreign currency forward contracts and currency option contracts. Derivatives that are valued using valuation techniques with significant unobservable inputs are classified in Level 3 of the fair value hierarchy. Examples of Level 3 derivatives include long-term interest rate or currency swaps and certain credit derivatives, where significant inputs such as volatility and correlation of such inputs are unobservable. Investment Securities Investment securities include Available-for-sale debt and equity securities, whose fair values are measured using the same valuation techniques as the trading account securities described above. Investment securities also include investments in nonmarketable equity securities which are subject to specialized industry accounting principles. The valuation of such nonmarketable equity securities involves significant management judgment due to the absence of quoted prices, lack of liquidity and the long term nature of these investments. Further, there may be restriction on transfers of nonmarketable equity securities. The MUFG Group values such securities initially at transaction price and subsequently adjusts such valuations, considering evidence such as current sales transactions of similar securities, initial public offerings, recent equity issuances and change in financial condition of the investee company. Nonmarketable equity securities are included in Level 3 of the fair value hierarchy. Other Assets Other assets measured at fair value mainly consist of securities received as collateral that may be sold or repledged under securities lending transactions. The securities received as collateral under lending transactions mainly consist of certain Japanese and foreign government bonds which are valued using the valuation techniques previously described in the section entitled “Trading Accounts Assets and Liabilities—Trading Account Securities” above. Obligations to Return Securities Received as Collateral Obligations to return securities received as collateral under securities lending transactions included in Other liabilities are measured at the fair values of the securities received as collateral. The securities received as collateral consist primarily of certain Japanese and foreign government bonds, whose fair values are measured using the valuation techniques described in the “Trading Account Assets and Liabilities—Trading Account Securities” above. Other Short-term Borrowings and Long-term Debt Certain short-term borrowings and long-term debt are measured at fair value due to the election of the fair value option. The fair value of these instruments are measured principally based on the discounted cash flows. Where the inputs into the valuation techniques are mainly based on observable inputs, these instruments are classified in Level 2 of the fair value hierarchy. Where significant inputs are unobservable, they are classified in Level 3 of the fair value hierarchy. Market Valuation Adjustments Counterparty credit risk adjustments are made to certain financial assets such as over-the-counter derivatives to factor in counterparty credit exposure. As not all counterparties have the same credit risk, it is necessary in calculating credit risk adjustments, to take into account probability of a default event occurring for each counterparty, which is primarily derived from observed or estimated spreads on credit default swaps. In addition, the counterparty credit risk adjustment takes into account the effect of credit risk mitigation such as pledged collateral and the legal right of offset with the counterparty. Funding valuation adjustment (“FVA”) represents the adjustment to reflect the impact of uncollateralized funding. The FVA is calculated using the MUFG’s market funding spread and the funding exposure of any uncollateralized component of the over-the-counter derivative instrument. The MUFG Group’s FVA framework incorporates key inputs, such as the expected future funding requirements arising from the MUFG Group’s positions with each counterparty and collateral arrangements, and the estimated market funding cost in the principal market, which considers the MUFG Group’s credit risk. Liquidity adjustments are applied mainly to the instruments classified in Level 3 of the fair value hierarchy when recent observable prices of such instruments are not available or such instruments are traded in inactive or less active markets. The liquidity adjustments are based on the facts and circumstances of the markets including the availability of external quotes and the time since the latest available quote. Model valuation adjustments such as unobservable parameter valuation adjustments may be provided when the fair values of instruments are determined based on internally developed valuation techniques. Examples of such adjustments include adjustments to the model price of certain derivatives where parameters such as correlation are unobservable. Unobservable parameter valuation adjustments are applied to mitigate the uncertainty inherent in the resulting valuation estimate. Investments in Certain Entities That Calculate Net Asset Value per Share The MUFG Group has interests in investment funds mainly private equity funds, and real estate funds that are measured at fair value on a recurring or nonrecurring basis. Private equity funds have specific investment objectives in connection with their acquisition of equity interests, such as providing financing and other support to start-up businesses, medium and small entities in a particular geographical area, and to companies with certain technology or companies in a high-growth industry. Generally, these investments cannot be redeemed with the funds, and the return of invested capital and its gains are derived from distributions received upon the liquidation of the underlying assets of the fund, the timing of which is uncertain. Real estate funds invest globally and primarily in real estate companies, debt recapitalizations and direct property. These investments are generally not redeemable with the funds. Distributions from each fund will be received as the underlying investments of the funds are liquidated, the timing of which is uncertain. Assets and Liabilities Measured at Fair Value on a Recurring Basis The following tables present the financial instruments carried at fair value by level within the fair value hierarchy as of March 31, 2022 and 2023: At March 31, 2022 Level 1 Level 2 Level 3 Fair Value (in millions) Assets Trading account assets: Trading securities (1) ¥ 17,170,976 ¥ 13,998,654 ¥ 797,997 ¥ 31,967,627 Debt securities Japanese national government and Japanese government agency bonds 7,927,707 344,034 — 8,271,741 Japanese prefectural and municipal bonds — 132,097 — 132,097 Foreign government and official institution bonds 7,606,345 471,163 1,711 8,079,219 Corporate bonds 3,198 2,664,869 683 2,668,750 Residential mortgage-backed securities — 6,792,386 — 6,792,386 Commercial mortgage-backed securities — 7,402 — 7,402 Asset-backed securities — 1,210,875 315,231 1,526,106 Other debt securities — — 313,166 313,166 Commercial paper — 1,271,921 — 1,271,921 Equity securities (2) 1,633,726 1,103,907 167,206 2,904,839 Trading derivative assets 201,860 10,204,531 115,040 10,521,431 Interest rate contracts 121,584 5,268,790 54,309 5,444,683 Foreign exchange contracts 2,514 4,788,739 9,560 4,800,813 Equity contracts 77,762 47,207 25,979 150,948 Commodity contracts — 88 21,984 22,072 Credit derivatives — 99,707 2,808 102,515 Other (8) — — 400 400 Investment securities: Available-for-sale debt securities 32,672,696 12,912,810 212,936 45,798,442 Japanese national government and Japanese government agency bonds 30,989,319 3,338,445 — 34,327,764 Japanese prefectural and municipal bonds — 4,146,144 — 4,146,144 Foreign government and official institution bonds 1,683,377 936,076 11,890 2,631,343 Corporate bonds — 1,087,059 3,089 1,090,148 Residential mortgage-backed securities — 900,392 15 900,407 Asset-backed securities — 1,464,041 124,379 1,588,420 Other debt securities — 30,016 73,563 103,579 Commercial paper — 1,010,637 — 1,010,637 Equity securities 4,834,102 152,041 55,883 5,042,026 Marketable equity securities 4,834,102 152,041 — 4,986,143 Nonmarketable equity securities (4) — — 55,883 55,883 Other (5) 1,434,046 38,574 4,912 1,477,532 Assets held for sale 421,450 2,791,372 78,521 3,291,343 Investment securities 409,618 2,713,377 65,262 3,188,257 Other 11,832 77,995 13,259 103,086 Total ¥ 56,735,130 ¥ 40,097,982 ¥ 1,265,289 ¥ 98,098,401 At March 31, 2022 Level 1 Level 2 Level 3 Fair Value (in millions) Liabilities Trading account liabilities: Trading securities sold, not yet purchased ¥ 57,371 ¥ 2,455 ¥ — ¥ 59,826 Trading derivative liabilities 217,570 10,697,699 43,951 10,959,220 Interest rate contracts 19,841 5,615,033 16,816 5,651,690 Foreign exchange contracts 4,017 4,901,054 2,097 4,907,168 Equity contracts 193,712 80,806 2,559 277,077 Commodity contracts — — 22,029 22,029 Credit derivatives — 100,806 79 100,885 Other (8) — — 371 371 Obligation to return securities received as collateral (6) 6,670,482 155,733 — 6,826,215 Other (7) — 525,135 16,463 541,598 Liabilities held for sale 852 50,744 1,603 53,199 Other 852 50,744 1,603 53,199 Total ¥ 6,946,275 ¥ 11,431,766 ¥ 62,017 ¥ 18,440,058 At March 31, 2023 Level 1 Level 2 Level 3 Fair Value (in millions) Assets Trading account assets: Trading securities (1) ¥ 19,098,208 ¥ 12,746,415 ¥ 1,182,319 ¥ 33,026,942 Debt securities Japanese national government and Japanese government agency bonds 6,092,523 329,502 — 6,422,025 Japanese prefectural and municipal bonds — 279,168 — 279,168 Foreign government and official institution bonds 11,760,274 493,691 1,168 12,255,133 Corporate bonds 3,965 2,252,424 — 2,256,389 Residential mortgage-backed securities — 4,978,709 — 4,978,709 Commercial mortgage-backed securities — 4,627 — 4,627 Asset-backed securities — 1,210,381 668,911 1,879,292 Other debt securities — — 334,124 334,124 Commercial paper — 1,931,569 — 1,931,569 Equity securities (2) 1,241,446 1,266,344 178,116 2,685,906 Trading derivative assets 84,406 12,674,978 142,343 12,901,727 Interest rate contracts 40,013 7,311,689 93,833 7,445,535 Foreign exchange contracts 3,909 5,258,511 13,714 5,276,134 Equity contracts 40,484 28,617 20,659 89,760 Commodity contracts — 17 9,908 9,925 Credit derivatives — 76,144 3,801 79,945 Other (8) — — 428 428 Trading loans (3) — 13,820 — 13,820 Investment securities: Available-for-sale debt securities 25,236,359 10,250,511 253,932 35,740,802 Japanese national government and Japanese government agency bonds 23,292,055 2,754,548 — 26,046,603 Japanese prefectural and municipal bonds — 2,759,941 — 2,759,941 Foreign government and official institution bonds 1,944,304 978,438 — 2,922,742 Corporate bonds — 1,056,191 1,970 1,058,161 Residential mortgage-backed securities — 1,110,239 15 1,110,254 Asset-backed securities — 1,247,377 182,938 1,430,315 Other debt securities — 343,777 69,009 412,786 Equity securities 4,362,017 101,576 74,761 4,538,354 Marketable equity securities 4,362,017 101,576 — 4,463,593 Nonmarketable equity securities (4) — — 74,761 74,761 Other (5) 1,535,446 848,596 92,251 2,476,293 Total ¥ 50,316,436 ¥ 36,635,896 ¥ 1,745,606 ¥ 88,697,938 At March 31, 2023 Level 1 Level 2 Level 3 Fair Value (in millions) Liabilities Trading account liabilities: Trading securities sold, not yet purchased ¥ 232,287 ¥ 2,620 ¥ — ¥ 234,907 Trading derivative liabilities 163,129 13,718,992 61,247 13,943,368 Interest rate contracts 85,641 8,566,043 45,204 8,696,888 Foreign exchange contracts 1,679 5,013,909 2,369 5,017,957 Equity contracts 75,809 48,953 3,731 128,493 Commodity contracts — — 9,817 9,817 Credit derivatives — 90,087 62 90,149 Other (8) — — 64 64 Obligation to return securities received as collateral (6) 6,664,578 158,763 68,204 6,891,545 Other (7) — 313,482 73,663 387,145 Total ¥ 7,059,994 ¥ 14,193,857 ¥ 203,114 ¥ 21,456,965 Notes: (1) Includes securities measured under the fair value option. (2) Excludes certain investments valued at net asset value of private equity funds whose fair values were ¥179,278 million and ¥225,972 million at March 31, 2022 and 2023, respectively. The amounts of unfunded commitments related to these private equity funds were ¥110,360 million and ¥172,562 million at March 31, 2022 and 2023, respectively. (3) Includes loans measured under the fair value option. (4) Excludes certain investments valued at net asset value of real estate funds and private equity and other funds whose fair values at March 31, 2022 were ¥30,142 million and ¥39,462 million, respectively, and those at March 31, 2023 were ¥29,308 million and ¥51,458 million, respectively. The amounts of unfunded commitments related to these real estate funds and private equity and other funds at March 31, 2022 were ¥1,011 million and nil, respectively, and those at March 31, 2023 were ¥1,305 million and nil, respectively. (5) Mainly comprises securities received as collateral that may be sold or repledged under securities lending transactions. (6) Included in Other liabilities. (7) Mainly includes other short-term borrowings, long-term debt, bifurcated embedded derivatives carried at fair value. (8) Includes certain derivatives such as earthquake derivatives. Changes in Level 3 Recurring Fair Value Measurements The following tables present a reconciliation of the assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) during the fiscal years ended March 31, 2022 and 2023. The determination to classify a financial instrument within Level 3 is based upon the significance of the unobservable inputs to overall fair value measurement. However, Level 3 financial instruments typically include, in addition to the unobservable or Level 3 input, observable inputs (inputs that are actively quoted and can be validated to external sources). Accordingly, the gains and losses in the tables below include changes in fair value due in part to observable inputs used in the valuation techniques. March 31, 2021 Total gains (losses) for the period March 31, 2022 Change in Included Included Purchases Issues Sales Settlements Transfers into Level 3 (10) Transfers out of Level 3 (10) (in millions) Assets Trading account assets: Trading securities (1) ¥ 756,413 ¥ 41,919 (2) ¥ — ¥ 458,395 ¥ — ¥ (197,245) ¥ (262,150) ¥ 665 ¥ — ¥ 797,997 ¥ 40,113 (2) Debt securities Foreign government and official institution bonds 1,280 287 — 31,591 — (31,432) (15) — — 1,711 47 Corporate bonds 77 (68) — 126 — (100) — 648 — 683 (69) Residential mortgage-backed securities 1,000 (2) — 97,197 — (98,176) (19) — — — — Asset-backed securities 336,811 26,692 — 270,974 — (67,500) (251,746) — — 315,231 27,693 Other debt securities 277,635 14,179 — 21,352 — — — — — 313,166 14,179 Equity securities 139,610 831 — 37,155 — (37) (10,370) 17 — 167,206 (1,737) Trading derivatives—net 25,027 23,754 (2) 1,882 51 (674) — (16,312) 41,076 (3,715) 71,089 46,149 (2) Interest rate contracts—net 14,179 (25,977) 824 — — — 9,696 39,609 (5) (838) 37,493 4,410 Foreign exchange contracts—net 7,283 2,403 206 21 — — 1,833 1,467 (5,750) 7,463 (1,640) Equity contracts—net 623 46,579 858 30 — — (27,543) — 2,873 23,420 42,546 Commodity contracts—net (63) 30 (6) — — — (6) — — (45) 30 Credit derivatives—net 2,271 750 — — — — (292) — — 2,729 819 Other—net (9) 734 (31) — — (674) — — — — 29 (16) Investment securities: Available-for-sale debt securities 289,616 277 (3) 25,143 236,786 — — (287,747) 15,651 (66,790) 212,936 12,545 (3) Foreign government and official institution bonds 16,718 — 607 5,163 — — (5,964) — (4,634) 11,890 87 Corporate bonds 162 (328) 68 557 — — (114) 2,854 (110) 3,089 (265) Residential mortgage-backed securities 15 — — — — — — — — 15 — Commercial mortgage-backed securities 1,599 — 104 — — — (524) — (1,179) — — Asset-backed securities 136,920 580 14,066 231,039 — — (258,226) — — 124,379 6,651 Other debt securities 134,202 25 10,298 27 — — (22,919) 12,797 (8) (60,867) 73,563 6,072 Equity securities 45,569 5,856 (3) — 9,899 — (3,113) — 130 (2,458) 55,883 3,960 (3) Nonmarketable equity securities 45,569 5,856 — 9,899 — (3,113) — 130 (2,458) 55,883 3,960 Other 18,784 (402) (7) 1,049 2,369 — (4,612) (202) — (12,074) 4,912 1,245 (7) Assets held for sale — (2,589) (11) 4,234 770 — — (4,247) 78,750 — 76,918 1,461 (11) Investment securities — (963) 3,791 1 — — (4,247) 66,680 — 65,262 5,737 Other — (1,626) 443 769 — — — 12,070 — 11,656 (4,276) Total ¥ 1,135,409 ¥ 68,815 ¥ 32,308 ¥ 708,270 ¥ (674) ¥ (204,970) ¥ (570,658) ¥ 136,272 ¥ (85,037) ¥ 1,219,735 ¥ 105,473 Liabilities Other ¥ (2,212) ¥ 8,315 (4) ¥ (3,080) ¥ — ¥ 36,535 ¥ — ¥ (19,361) ¥ 5,364 (6) ¥ 1,372 (6) ¥ 16,463 ¥ 15,532 (4) Total ¥ (2,212) ¥ 8,315 ¥ (3,080) ¥ — ¥ 36,535 ¥ — ¥ (19,361) ¥ 5,364 ¥ 1,372 ¥ 16,463 ¥ 15,532 March 31, 2022 Total gains (losses) for the period Purchases Issues Sales Settlements Transfers Transfers March 31, 2023 Change in Included in earnings and retained earnings (12) Included (in millions) Assets Trading account assets: Trading securities (1) ¥ 797,997 ¥ 50,044 (2) ¥ — ¥ 387,100 ¥ — ¥ (21,409) ¥ (30,468) ¥ — ¥ (945) ¥ 1,182,319 ¥ 43,990 (2) Debt securities Foreign government and official institution bonds 1,711 16 — 5,718 — (5,765) (250) — (262) 1,168 (35) Corporate bonds 683 — — — — — — — (683) — — Asset-backed securities 315,231 17,132 — 354,978 — (15,636) (2,794) — — 668,911 15,749 Other debt securities 313,166 21,297 — 8,128 — — (8,467) — — 334,124 20,646 Equity securities 167,206 11,599 — 18,276 — (8) (18,957) — — 178,116 7,630 Trading derivatives—net 71,089 (2,045) (2) 1,138 612 (334) — (17,198) 55,211 (27,377) 81,096 45,862 (2) Interest rate contracts—net 37,493 (27,947) 297 — — — 10,932 55,243 (5) (27,389) (5) 48,629 10,779 Foreign exchange contracts—net 7,463 8,210 86 — — — (4,484) (32) 102 11,345 7,877 Equity contracts—net 23,420 16,190 758 19 — — (23,369) — (90) 16,928 25,646 Commodity contracts—net (45) 153 (3) — — — (14) — — 91 153 Credit derivatives—net 2,729 1,273 — — — — (263) — — 3,739 1,303 Other—net (9) 29 76 — 593 (334) — — — — 364 104 Investment securities: Available-for-sale debt securities 212,936 (1,303) (3) 16,357 301,283 — — (272,638) 1,405 (4,108) 253,932 2,094 (3) Foreign government and official institution bonds 11,890 — (925) 128 — — (11,093) — — — — Corporate bonds 3,089 (164) 142 1,823 — — (67) 1,255 (4,108) 1,970 147 Residential mortgage-backed securities 15 — — — — — — — — 15 — Asset-backed securities 124,379 (1,174) 14,406 296,645 — — (251,318) — — 182,938 (823) Other debt securities 73,563 35 2,734 2,687 — — (10,160) 150 — 69,009 2,770 Equity securities 55,883 712 (3) 345 18,963 — (2,682) (806) 3,411 (1,065) 74,761 161 (3) Nonmarketable equity securities 55,883 712 345 18,963 — (2,682) (806) 3,411 (1,065) 74,761 161 Other 4,912 61 (7) (21) 90,986 — — (5,612) 1,925 — 92,251 61 (7) Assets held for sale 76,918 992 (11) 9,263 1,620 — (77,390) (11,403) — — — — Investment securities 65,262 (3,619) 7,156 297 — (56,292) (12,804) — — — — Other 11,656 4,611 2,107 1,323 — (21,098) 1,401 — — — — Total ¥ 1,219,735 ¥ 48,461 ¥ 27,082 ¥ 800,564 ¥ (334) ¥ (101,481) ¥ (338,125) ¥ 61,952 ¥ (33,495) ¥ 1,684,359 ¥ 92,168 Liabilities Obligation to return securities received as collateral ¥ — ¥ — ¥ — ¥ — ¥ 73,595 ¥ — ¥ (5,391) ¥ — ¥ — ¥ 68,204 ¥ — Other 16,463 35,755 (4) (3,879) — 53,887 — (36,792) 72,173 (6) (192) 73,663 43,066 (4) Total ¥ 16,463 ¥ 35,755 ¥ (3,879) ¥ — ¥ 127,482 ¥ — ¥ (42,183) ¥ 72,173 ¥ (192) ¥ 141,867 ¥ 43,066 Notes: (1) Includes Trading securities measured under the fair value option. (2) Included in Trading account losses—net Foreign exchange gains—net (3) Included in Investment securities gains (losses)—net and Other comprehensive income—net (4) Included in Trading account losses—net and Other comprehensive income—net. (5) Transfers into (out of) Level 3 for Interest rate contracts—net were mainly caused by changes in the impact of unobservable input to the entire fair value measurement. Unobservable input includes loss given default. (6) Transfers into (out of) Level 3 for long-term debt in Other were mainly caused by the decrease (increase) in the observability of the key inputs to the valuation models and a corresponding increase (decrease) in the significance of the unobservable inputs. (7) Included in Fees and commissions income and Other non-interest income. (8) Transfers relate to the reclassification of certain securities. (9) Includes certain derivatives such as earthquake derivatives. (10) Includes the reclassification of assets and liabilities in transferred business of MUFG Union Bank to assets and liabilities held for sale. (11) Included in Investment securities gains (losses)—net, Trading account losses—net, Fees and commissions income and Other comprehensive income—net. (12) Included the profits and losses recognized in three months before the sale of MUFG Union Bank which were reclassified to retained earnings. Quantitative Information about Level 3 Fair Value Measurements The following tables present information on the valuation techniques, significant unobservable inputs and their ranges for each major category of assets and liabilities measured at fair value on a recurring basis and classified in Level 3: At March 31, 2022 Fair value (1) Valuation technique Significant unobservable inputs Range Weighted average (2) (in millions) Assets Trading securities, Investment securities and Other assets: Foreign government and official institution bonds ¥ 17,297 Return on equity method Probability of default 0.2%~1.8% 0.5% Recovery rate 35.0%~70.0% 64.4% Market-required return on capital 10.0% 10.0% Residential mortgage-backed securities, Commercial mortgage-backed securities and Asset-backed securities 98,325 Discounted cash flow Recovery rate 100.0% 100.0% 238,864 Internal model (4) Asset correlations 3.0% 3.0% Discount factor 0.6%~1.0% 0.9% Prepayment rate 29.0% 29.0% Probability of default 0.0%~85.4% — (3) Recovery rate 69.9% 69.9% Other debt securities 369,445 Discounted cash flow Liquidity premium 0.9%~3.2% 2.8% 58,677 Return on equity method Probability of default 0.1%~8.0% 0.4% Recovery rate 60.0%~90.0% 82.7% Market-required return on capital 8.0%~10.0% 9.9% At March 31, 2022 Fair value (1) Valuation technique Significant unobservable inputs Range Median (2) (in millions) Trading derivatives—net: Interest rate contracts—net 35,195 Option model Correlation between interest rates 30.0%~62.9% 45.6% Correlation between interest rate and foreign exchange rate 15.3%~60.0% 41.0% Volatility 0.0%~100.0% 61.9% Foreign exchange contracts—net 7,463 Option model Correlation between interest rates 10.0%~70.0% 51.5% Correlation between interest rate and foreign exchange rate 0.0%~60.0% 37.4% Correlation between foreign exchange rates 50.0%~70.6% 66.4% Volatility 9.0%~21.7% 13.3% Equity contracts—net 772 Option model Correlation between foreign exchange rate and equity (58.4)%~55.0% 23.1% Correlation between equities 2.4%~95.0% 51.4% Volatility 26.0%~38.0% 31.8% 22,648 Discounted cash flow Term of litigation 1.8 years 1.8 years At March 31, 2023 Fair value (1) Valuation technique Significant unobservable inputs Range Weighted average (2) (in millions) Assets Trading securities and Investment securities: Residential mortgage-backed securities and Asset-backed securities ¥ 101,014 Discounted cash flow Recovery rate 100.0% 100.0% 591,515 Internal model (4) Asset correlations 3.0% 3.0% Discount factor 2.0%~2.3% 2.0% Prepayment rate 13.1% 13.1% Probability of default 0.0%~99.0% — (3) Recovery rate 72.2% 72.2% Other debt securities 385,046 Discounted cash flow Liquidity premium 0.9%~3.2% 2.8% At March 31, 2023 Fair value (1) Valuation technique Significant unobservable inputs Range Median (2) (in millions) Trading derivatives—net: Interest rate contracts—net 48,209 Option model Correlation between interest rates 30.0%~60.6% 44.4% Correlation between interest rate and foreign exchange rate 2.0%~60.0% 36.6% Volatility 70.3%~106.7% 80.1% Foreign exchange contracts—net 11,345 Option model Correlation between interest rates 30.0%~70.0% 50.6% Correlation between interest rate and foreign exchange rate 14.3%~60.0% 36.8% Correlation between foreign exchange rates 50.0%~70.6% 66.4% Volatility 10.6%~23.0% 15.6% Equity contracts—net 3,316 Option model Correlation between foreign exchange rate and equity (58.4)%~55.0% 15.0% Correlation between equities 5.6%~95.0% 54.1% Volatility 28.0%~37.0% 32.2% 13,612 Discounted cash flow Term of litigation 0.1 years~1.0 year 0.5 years Notes: (1) The fair value as of March 31, 2022 and 2023 excludes the f

Parent Company Only Financial I

Parent Company Only Financial Information	12 Months Ended
	Mar. 31, 2023
Condensed Financial Information Disclosure [Abstract]
Parent Company Only Financial Information	PARENT COMPANY ONLY FINANCIAL INFORMATION Distributions of retained earnings of MUFG Bank and Mitsubishi UFJ Trust and Banking are restricted in order to meet the minimum capital adequacy requirements under the Banking Law. Additionally, retained earnings of these banking subsidiaries are restricted, except for approximately ¥5,094 billion and ¥5,837 billion, in accordance with the statutory reserve requirements under the Companies Act at March 31, 2022 and 2023, respectively. See Notes 19 and 21 for further information. The Banking Law and related regulations restrict the ability of these banking subsidiaries to extend loans or credit to the parent company. Such loans or credits to the parent company are generally limited to 15% of the banking subsidiary’s consolidated total capital, as determined by the capital adequacy guidelines. At March 31, 2022 and 2023, approximately ¥5,662 billion and ¥5,352 billion, respectively, of net assets of consolidated subsidiaries may be restricted as to payment of cash dividends and loans to the parent company. The following table presents the parent company only financial information of MUFG: Condensed Balance Sheets As of March 31, 2022 2023 (in millions) Assets: Cash and interest-earning deposits with banking subsidiaries ¥ 231,389 ¥ 173,603 Investments in subsidiaries and affiliated companies 16,504,756 16,834,133 Banking subsidiaries 11,731,745 11,893,171 Non-banking subsidiaries and affiliated companies 4,773,011 4,940,962 Loans to subsidiaries 10,062,030 12,841,655 Banking subsidiaries 9,516,847 12,225,477 Non-banking subsidiaries 545,183 616,178 Other assets 266,773 229,005 Total assets ¥ 27,064,948 ¥ 30,078,396 Liabilities and Shareholders’ equity: Short-term borrowings from banking subsidiaries ¥ 1,146,147 ¥ 1,291,660 Long-term debt from non-banking subsidiaries and affiliated companies 24,535 15,591 Long-term debt 10,055,876 12,792,670 Other liabilities 233,322 215,129 Total liabilities 11,459,880 14,315,050 Total shareholders’ equity 15,605,068 15,763,346 Total liabilities and shareholders’ equity ¥ 27,064,948 ¥ 30,078,396 Condensed Statements of Operations Fiscal years ended March 31, 2021 2022 2023 (in millions) Income: Dividends from subsidiaries and affiliated companies ¥ 404,064 ¥ 586,108 ¥ 605,115 Banking subsidiaries 317,453 419,691 407,630 Non-banking subsidiaries and affiliated companies 86,611 166,417 197,485 Management fees from subsidiaries 35,095 34,957 35,052 Interest income from subsidiaries 174,816 183,679 273,536 Foreign exchange gains—net 1,089 6,851 3,465 Trading account profits (losses)—net (18,285) (4,059) 28,970 Gains on sales of investment in subsidiaries and affiliated companies—net 95 — 17,748 Other income 12,552 11,732 13,255 Total income 609,426 819,268 977,141 Expense: Operating expenses 37,567 40,158 44,149 Interest expense to subsidiaries and affiliated companies 11,415 12,256 15,442 Interest expense 159,057 167,057 256,333 Other expense 8,164 7,154 6,496 Total expense 216,203 226,625 322,420 Equity in undistributed net income (loss) of subsidiaries and affiliated companies—net 727,257 (667,088) (35,857) Income (loss) before income tax expense 1,120,480 (74,445) 618,864 Income tax expense 3,182 8,875 18,956 Net income (loss) ¥ 1,117,298 ¥ (83,320) ¥ 599,908 Condensed Statements of Cash Flows Fiscal years ended March 31, 2021 2022 2023 (in millions) Operating activities: Net income (loss) ¥ 1,117,298 ¥ (83,320) ¥ 599,908 Adjustments and other (568,317) 653,768 9,733 Net cash provided by operating activities 548,981 570,448 609,641 Investing activities: Proceeds from sales of investment in subsidiaries and affiliated companies 35,081 136 41,125 Purchase of equity investment in subsidiaries and an affiliated company — (1,000) — Net increase in loans to subsidiaries (462,208) (257,619) (2,204,831) Other—net (11,531) (9,413) (7,791) Net cash used in investing activities (438,658) (267,896) (2,171,497) Financing activities: Net increase (decrease) in short-term borrowings from subsidiaries (49,058) (61,415) 145,513 Proceeds from issuance of long-term debt 831,121 1,625,173 3,833,878 Repayment of long-term debt (514,436) (1,369,254) (1,630,695) Repayment of long-term debt to affiliated companies (10,500) — — Proceeds from sales of treasury stock 1 — — Payments for acquisition of treasury stock (13) (150,017) (450,019) Dividends paid (321,772) (334,620) (380,447) Other—net (1,954) (10,410) (14,160) Net cash provided by (used in) financing activities (66,611) (300,543) 1,504,070 Net increase (decrease) in cash and cash equivalents 43,712 2,009 (57,786) Cash and cash equivalents at beginning of fiscal year 185,668 229,380 231,389 Cash and cash equivalents at end of fiscal year ¥ 229,380 ¥ 231,389 ¥ 173,603

Subsequent Events

Subsequent Events	12 Months Ended
	Mar. 31, 2023
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTS Approval of Dividends On June 29, 2023, the shareholders approved the payment of cash dividends of ¥16.0 per share of Common stock, totaling ¥192,860 million, that were payable on June 30, 2023, to the shareholders of record on March 31, 2023.

Basis of Financial Statements_2

Basis of Financial Statements and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Mar. 31, 2023
Accounting Policies [Abstract]
Description of Business	Description of Business Mitsubishi UFJ Financial Group, Inc. (“MUFG”) is a holding company for MUFG Bank, Ltd. (“MUFG Bank” or “BK”), Mitsubishi UFJ Trust and Banking Corporation (“Mitsubishi UFJ Trust and Banking” or “TB”), Mitsubishi UFJ Securities Holdings Co., Ltd. (“Mitsubishi UFJ Securities Holdings”), Mitsubishi UFJ NICOS Co., Ltd. (“Mitsubishi UFJ NICOS”), and other subsidiaries. Mitsubishi UFJ Securities Holdings is an intermediate holding company for Mitsubishi UFJ Morgan Stanley Securities Co., Ltd. (“Mitsubishi UFJ Morgan Stanley Securities”). Through its subsidiaries and affiliated companies, MUFG engages in a broad range of financial operations, including commercial banking, investment banking, trust banking and asset management services, securities businesses, and credit card businesses, and it provides related services to individual and corporate customers. See Note 29 for more information by business segment.
Basis of Financial Statements	Basis of Financial Statements The accompanying consolidated financial statements are presented in Japanese yen, the currency of the country in which MUFG is incorporated and principally operates. The accompanying consolidated financial statements have been prepared on the basis of accounting principles generally accepted in the United States of America (“U.S. GAAP”). In certain respects, the accompanying consolidated financial statements reflect adjustments to conform with U.S. GAAP and therefore are not included in the consolidated financial statements issued by MUFG in accordance with accounting principles generally accepted in Japan (“Japanese GAAP”) and certain of its subsidiaries in accordance with the corresponding applicable statutory requirements and accounting practices in their respective countries of incorporation. The major adjustments include those relating to (1) investment securities, (2) derivative financial instruments, (3) allowance for credit losses, (4) income taxes, (5) consolidation, (6) premises and equipment, (7) transfer of financial assets, (8) accrued severance indemnities and pension liabilities, (9) goodwill and other intangible assets and (10) lease transactions.
Use of Estimates	Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to management judgment primarily relate to the allowance for credit losses, the valuation of deferred tax assets, the valuation of financial instruments, the accounting for goodwill and intangible assets, impairment of investment securities, the allowances for repayment of excess interest and accrued severance indemnities and pension liabilities.
Consolidation	Consolidation —The accompanying consolidated financial statements include the accounts of MUFG, its subsidiaries and certain variable interest entities (“VIE”s) (together, the “MUFG Group”). In situations in which the MUFG Group has a controlling financial interest in other entities, including certain VIEs, such entities are consolidated and noncontrolling interests, if any, are recorded in Total equity. Intercompany transactions and balances have been eliminated. Investments in affiliated companies (companies over which the MUFG Group has the ability to exercise significant influence) are accounted for by the equity method of accounting and are reported in Other assets. The MUFG Group’s equity interest in the earnings of these equity investees and other-than-temporary impairment (“OTTI”) are reported in Equity in earnings of equity method investees-net. The MUFG Group recognizes an impairment loss on investments in equity method investees that is other-than-temporary. The MUFG Group determines whether loss on investments is other-than-temporary, through consideration of various factors, such as inability to recover the carrying amount of the investment, the inability of the investee to sustain an earnings capacity that would justify the carrying amount of the investment, the length of time and the extent to which the fair value has been less than cost, the financial condition and near-term prospects of the investees, and the intent and ability to retain its investment in the investees for a period of time sufficient to allow for any anticipated recovery in the fair value. The MUFG Group also evaluates additional factors, such as the condition and trend of the economic cycle, and trends in the general market. The MUFG Group consolidates VIEs if it has the power to direct the activities of a VIE which most significantly impact the VIE’s economic performance and has the obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE. To assess whether a VIE should be consolidated or not, the MUFG Group considers all factors, such as the purpose and design of the VIE, contractual arrangements, and the MUFG Group’s involvement in both the establishment of the VIE and day-to-day activities of the VIE. The MUFG Group considers a right to make the most significant decisions affecting a VIE to determine whether it is deemed to have the power to direct the activities of the VIE. Furthermore, the MUFG Group considers its economic interests in the VIE, including investments in debt or equity instruments issued by the VIE, liquidity and credit enhancement, and guarantees to determine whether such interests are potentially significant to the VIE or not.
Cash Flows	Cash Flows—For the purposes of reporting cash flows, cash and cash equivalents consist of Cash and due from banks, Interest-earning deposits in other banks, and certain restricted cash included in Other assets. Restricted cash included in cash and cash equivalents represents cash or deposits subject to withdrawal or usage restrictions, and mainly consist of reserves on deposits with the Bank of Japan and similar reserves required for foreign offices and subsidiaries engaged in banking businesses in foreign countries. Cash flows from qualified hedging activities are classified in the same category as the items being hedged.
Translation of Foreign Currency Financial Statements and Foreign Currency Transactions	Translation of Foreign Currency Financial Statements and Foreign Currency Transactions —Financial statements of overseas entities are translated into Japanese yen using the respective fiscal year-end exchange rates for assets and liabilities. Income and expense items are translated at average rates of exchange for the respective fiscal years. Foreign currency translation gains and losses related to the financial statements of overseas entities of the MUFG Group, net of related income tax effects, are credited or charged directly to Foreign currency translation adjustments, a component of Accumulated other comprehensive income (“Accumulated OCI”). Tax effects of gains and losses on foreign currency translation of the financial statements of overseas entities are not recognized unless it is apparent that the temporary differences will reverse in the foreseeable future.
Repurchase Agreements, Securities Lending and Other Secured Financing Transactions	Repurchase Agreements, Securities Lending and Other Secured Financing Transactions—Securities sold with agreements to repurchase (“repurchase agreements”), securities purchased with agreements to resell (“resale agreements”) and securities lending and borrowing transactions are accounted for as secured financing or lending transactions, if the transferor has not surrendered control over the securities. Repurchase agreements and resale agreements are generally carried at the amounts at which the securities will be subsequently sold or repurchased, and securities lending and borrowing transactions are generally carried at the amount of cash collateral advanced or received. If they meet the relevant conditions for the surrender of control, they are accounted for as sales of securities with related off-balance sheet forward repurchase commitments or purchases of securities with related off-balance sheet forward resale commitments. For the fiscal years ended March 31, 2021, 2022 and 2023, there were no such transactions accounted for as sales or purchases.
Collateral	Collateral—For secured lending transactions, including resale agreements, securities borrowing transactions, commercial lending and derivative transactions, the MUFG Group, as a secured party, generally has the right to require the counterparties to provide collateral, including letters of credit, cash, securities and other financial assets. For most secured lending transactions, the MUFG Group maintains strict levels of collateralization governed by a daily mark-to-market analysis. Financial assets pledged as collateral are generally negotiable financial instruments and are permitted to be sold or repledged by secured parties. If the MUFG Group sells these financial assets received as collateral, it recognizes the proceeds from the sale and its obligation to return the collateral. For secured borrowing transactions, principally repurchase agreements and securities lending transactions and derivative transactions, where the secured party has the right to sell or repledge financial assets pledged as collateral, the MUFG Group separately discloses those financial assets pledged as collateral in the accompanying consolidated balance sheets.
Trading Account Securities	Trading Account Securities—Securities and money market instruments held in anticipation of short-term market movements and for resale to customers are included in Trading account assets, and short trading positions of these instruments are included in Trading account liabilities. Trading positions are carried at fair value in the accompanying consolidated balance sheets and recorded on a trade date basis. Changes in the fair value of trading positions are recognized in Trading account profits (losses). The MUFG Group has elected the fair value option for certain foreign securities. See Note 31 for a further discussion of fair value option.
Investment Securities	Investment Securities —Debt securities for which the MUFG Group has both the ability and positive intent to hold to maturity are classified as Held-to-maturity debt securities and are carried at amortized cost. Debt securities that the MUFG Group may not hold to maturity other than those classified as Trading account securities, are classified as Available-for-sale debt securities, and are carried at their fair values, with unrealized gains and losses reported on a net-of-tax basis within Accumulated OCI, which is a component of equity. Available-for-sale debt securities are considered to be impaired if the fair value is less than the amortized cost basis. An impairment loss is recognized in earnings for a security if the MUFG Group has intent to sell such a debt security or if it is more likely than not the MUFG Group will be required to sell such a debt security before recovery of its amortized cost basis. If not, the credit component of an impairment loss is recognized in earnings by recording an allowance for credit losses, limited by the amount of impairment loss. However, the noncredit component of an impairment loss is recognized in Accumulated OCI. In determining whether a credit loss exists, the MUFG Group generally considers factors such as the financial condition of the issuer and the extent of decline in fair value. For Held-to-maturity debt securities, an allowance for expected credit losses over the remaining expected life is required to be provided. Equity securities include marketable equity investment securities and nonmarketable equity investment securities. Marketable equity investment securities are measured at fair value with unrealized gains or losses reflected in net income. Nonmarketable equity investment securities are primarily measured at cost minus impairment, if any, plus or minus changes resulting from observable price changes. Nonmarketable equity investment securities held by subsidiaries that are investment companies or brokers and dealers, are subject to the specialized industry accounting principles for investment companies and brokers and dealers. Securities of those subsidiaries are carried at their fair values.
Derivative Financial Instruments	Derivative Financial Instruments —The MUFG Group engages in derivative activities involving swaps, forwards, futures, options, and other types of derivative contracts. Derivatives are used in trading activities to generate trading revenues and fee income for its own account and to respond to customers’ financial needs. Derivatives are also used to manage counterparty credit risk and market risk exposures to fluctuations in interest and foreign exchange rates, equity and commodity prices. Derivatives entered into for trading purposes are carried at fair value and are reported as Trading account assets or Trading account liabilities, as appropriate. The fair values of derivative contracts executed with the same counterparty under legally enforceable master netting agreements are presented on a gross basis. Changes in the fair value of such contracts are recognized currently in Foreign exchange gains (losses)—net with respect to foreign exchange contracts and in Trading account profits (losses)—net with respect to interest rate contracts and other types of contracts. Embedded features that are not clearly and closely related to the host contracts and meet the definition of derivatives are separated from the host contracts and measured at fair value unless the contracts embedding the derivatives are measured at fair value in their entirety.
Loans	Loans —Loans originated by the MUFG Group (“originated loans”) are carried at the principal amount outstanding, adjusted for unearned income and deferred net nonrefundable loan fees and costs. Originated loans held and intended for dispositions or sale in secondary markets are transferred to the held-for-sale classification and carried at the lower of cost or estimated fair value generally on an individual loan basis. Loan origination fees, net of certain direct origination costs, are deferred and recognized over the contractual life of the loan as an adjustment to yield using a method that approximates the interest method. The MUFG Group classifies its loan portfolio into the following portfolio segments—Commercial, Residential, Card, MUFG Americas Holdings Corporation (“MUFG Americas Holdings” or “MUAH”), Bank of Ayudhya Public Company Limited (“Krungsri”), and Other based on the grouping used by the MUFG Group to determine the allowance for credit losses. The MUFG Group further classifies the Commercial segment into classes based on initial measurement attributes, risk characteristics, and its method of monitoring and assessing credit risk. The MUFG Americas Holdings segment was eliminated due to the transfer of the MUFG Union Bank shares to U.S. Bancorp and the internal reorganization within the MUFG Group. Please refer to Note 2 and Note 4 for further information of the transfer. Past due status is determined based on the contractual terms of the loan and the actual number of days since the date the last payment was made. Originated loans are generally placed on nonaccrual status when substantial doubt exists as to the full and timely collection of either principal or interest, specifically when principal or interest is contractually past due one month or more with respect to loans within all classes of the Commercial segment, three months or more with respect to loans within the Card, MUFG Americas Holdings, and Krungsri segments, and six months or more with respect to loans within the Residential segment. A nonaccrual loan may be restored to an accrual status when interest and principal payments become current and management expects that the borrower will make future contractual payments as scheduled. When a loan is placed on nonaccrual status, interest accrued but not received is generally reversed against interest income. Cash receipts on nonaccrual loans, for which the ultimate collectibility of principal is uncertain, are applied as principal reductions; otherwise, such collections are credited to income. The MUFG Group modifies certain loans in conjunction with its loss-mitigation activities. Through these modifications, concessions are granted to a borrower who is experiencing financial difficulty, generally in order to minimize economic loss, to avoid foreclosure or repossession of collateral, and to ultimately maximize payments received from the borrower. The concessions granted vary by portfolio segment, by program, and by borrower-specific characteristics, and may include interest rate reductions, term extensions, payment deferrals, and partial principal forgiveness. Loan modifications that represent concessions made to borrowers who are experiencing financial difficulties are identified as troubled debt restructurings (“TDRs”).
Loan Securitization	Loan Securitization—The MUFG Group securitizes and services commercial, industrial, and residential loans in the normal course of business. The MUFG Group accounts for a transfer of loans in a securitization transaction as a sale if it meets relevant conditions for the surrender of control. Otherwise, the transfer is accounted for as a collateralized borrowing transaction. When a securitization is accounted for as a sale, the proceeds from a sale of financial assets consist of the cash and any other assets obtained, including beneficial interests and separately recognized servicing assets, in the transfer less any liabilities incurred, including separately recognized servicing liabilities. All proceeds and reductions of proceeds from a sale shall be initially measured at fair value.
Allowance for Credit Losses (Loans)	Allowance for Credit Losses (Loans) —The MUFG Group maintains an allowance for credit losses, which is a valuation account that is deducted from the amortized cost basis of the loans to present the net amount expected to be collected on the loans. The amount necessary to adjust the allowance for credit losses for management’s current estimate of expected credit losses on loans is reported in net income as a credit loss expense. Actual credit losses (amounts deemed uncollectible, in whole or in part), net of recoveries, are generally determined based on detailed loan reviews and a credit assessment by management at each balance sheet date and are deducted from the allowance for credit losses as net charge-offs. The MUFG Group generally applies its charge-off policy to all loans in its portfolio regardless of the type of borrower. Management believes that the provision for credit losses is adequate. Key elements relating to the policies and discipline used in determining the allowance for credit losses are credit classification and the related borrower categorization process. The categorization is based on conditions that may affect the ability of borrowers to service their debt, taking into consideration current financial information, historical payment experience, credit documentation, public information, analyses of relevant industry segments and existing economic conditions. In determining the appropriate level of the allowance, the MUFG Group evaluates the probable loss by collateral value, historical loss experience, probability of insolvency and category of loan based on its type and characteristics. For the allowance methodology, the MUFG Group uses quantitative models that incorporate economic forecast scenarios. These economic forecast scenarios include macroeconomic variables that have historically been correlated with historical credit losses. These variables include, but are not limited to, unemployment rates and gross domestic product. As any one economic forecast scenario is inherently uncertain, multiple economic forecast scenarios were leveraged. The macroeconomic variables in multiple economic forecast scenarios and weightings given to each scenario depend on a variety of factors including recent economic conditions and views of internal, as well as third-party, economists. The allowance for credit losses for TDR is measured using the discounted cash flow method, or based on the fair value of the collateral if the loan is collateral dependent. The allowance for credit losses includes qualitative adjustments to cover losses that are expected but were not reflected in the modeled allowance. For example, factors that the MUFG considers include remaining time to maturity and extent of prepayments, credit concentration, the volume and severity of past due, changes in lending policy and procedures, among others. In all segments, when estimating the allowance for credit losses, significant management assumptions are incorporated in economic variables, qualitative adjustments, or both to capture the heightened volatility and uncertainty in future economic conditions arising mainly from the prolonged COVID-19 and Russia-Ukraine situation. There are de minimis or zero expected credit losses, for example, for lending and financing transactions, such as Interest-earning deposits in other banks, Call loans and funds sold, Receivables under resale agreements and Receivables under securities borrowing transactions because the term is short and the credit quality of the borrowers is normal. The methodologies used to estimate the allowance and the charge-off policy for the major portfolio segments are as follows: Commercial segment In the Commercial segment, expected credit losses of loans are measured on a collective basis when similar risk characteristics exist. Risk characteristics that are considered for aggregation of loans include internal credit ratings, geographical location, and industry of the borrower. The collectively-assessed allowance is measured over the contractual term of the loans that is adjusted for expected prepayments, using probability of default (“PD”), loss given default (“LGD”) and exposure at default (“EAD”) loss forecasting model, which is based on historical information and adjusted to incorporate expectations of future economic conditions considering economic variables such as gross domestic product and unemployment rates. The PD is determined as the marginal PD that denotes the likelihood that a borrower is observed to experience the default during a defined period of time, based on internal credit rating, geographical location, or industry of the borrower. The LGD is determined as the estimated loss on the loan that would be realized upon the default of the borrower, mainly based on the historical experience of collections against loans in default. The PD and LGD are continually reviewed to determine the appropriate level of the allowance for credit loss. Qualitative adjustments are made to cover losses that are expected but not adequately captured in the quantitative forecasting model or economic assumptions, considering factors such as remaining time to maturity and extent of prepayments, the volume and severity of past due loans, changes in lending policy and procedures, the industry in which a borrower operates, and changes in other external factors. The collectively-assessed allowance methodology incorporates an economic forecast over a three-year period. Beyond the three-year economic forecast, the allowance methodology reverts to an average historical loss information on a straight-line basis over a two-year period. When a loan does not share risk characteristics with other loans, expected credit losses for that loan are measured on an individual basis. Individually-assessed allowance is measured based on the present value of expected future cash flows discounted at the loan’s original effective interest rate, or the fair value of the collateral if the loan is collateral dependent. The allowance for loans that have been modified into a TDR or reasonably expected to be modified into a TDR are measured on an individual basis. For nonaccrual TDRs, the allowance for credit losses is provided for these loans using the discounted cash flow method, or based on the fair value of the collateral. For TDRs accounted for as accruing loans, the allowance for credit losses is determined by discounting the estimated future cash flows using the original effective interest rate of the loans prior to modification. In relation to loans categorized as Legally/Virtually Bankrupt, the carrying amount of loans less estimated value of the collateral and guaranteed amount is generally considered uncollectible, and is charged off. Residential segment In the Residential segment, the loans are comprised of smaller-balance homogeneous loans and expected credit losses of loans are measured on a collective basis. The allowance for credit losses is measured over the contractual term of the loans that is adjusted for expected prepayments, using the state transition probability matrix, which captures delinquency status changes and prepayments by loans’ remaining term, and is based on historical information and adjusted to incorporate expectations of future economic conditions considering economic variables, such as unemployment rates. The LGD is also used to capture the estimated loss on the loan that would be realized upon the default of the borrower. The collectively-assessed allowance methodology incorporates an economic forecast over a three-year period. Beyond the three-year economic forecast, the allowance methodology reverts to average historical loss information on a straight-line basis over a two-year period. The allowance for loans that have been modified into a TDR or reasonably expected to be modified into a TDR are measured on an individual basis. For nonaccrual TDRs, the allowance for credit losses is provided for these loans using the discounted cash flow method, or based on the fair value of the collateral. For TDRs accounted for as accruing loans, the allowance for credit losses is determined by discounting the estimated future cash flows using the original effective interest rate of the loans prior to modification. In relation to loans that are in past due status over a certain period of time and deemed uncollectible, the carrying amount of loans less estimated value of the collateral and guaranteed amount is generally considered uncollectible and charged off. Card segment In the Card segment, the loans are smaller-balance homogeneous loans and expected credit losses of loans are measured on a collective basis. The allowance for credit losses is measured over the contractual term of the loans that is adjusted for expected prepayments, using the state transition probability matrix, which captures delinquency status changes and prepayments by loans’ remaining term, and is based on historical information and adjusted to incorporate expectations of future economic conditions considering economic variables, such as unemployment rate. The collectively-assessed allowance methodology incorporates an economic forecast over a three-year period. Beyond the three-year economic forecast, the allowance methodology reverts to average historical loss information. The allowance for loans that have been modified into a TDR or reasonably expected to be modified into a TDR are measured on an individual basis, and the allowance for credit losses is determined using the discounted cash flow method whereby the estimated future cash flows are discounted using the original effective interest rate of the loans prior to modification. In relation to loans that are in past due status over a certain period of time and deemed uncollectible, the amount of loans is generally fully charged off. Krungsri segment In the Krungsri segment, expected credit losses are measured on a collective basis for portfolios of loans that share similar economic risk characteristics. Expected credit losses are a probability-weighted estimate of the present value of credit losses. These are measured as the present value of the difference between the cash flows under the contract and the cash flows expected to be received arising from the weighting of multiple future economic scenarios that consider economic variables such as gross domestic product and unemployment rates, discounted at the loan’s effective interest rate. Qualitative adjustments are made to cover losses that are expected but not adequately captured in the quantitative forecasting model. Loans that do not share risk characteristics are evaluated individually to determine the allowance balance. Individually-assessed allowance is measured based on the present value of expected future cash flows discounted at the loan’s original effective interest rate, or the fair value of the collateral if the loan is collateral dependent. The allocated allowance for large groups of smaller-balance homogeneous loans is established for smaller balance loans such as housing loans, credit card loans, and personal loans. These loans are managed on a pool basis, and loss factors are based on expected net charge-off ranges. The allowance for loans that have been modified into a TDR or reasonably expected to be modified into a TDR are measured on an individual basis. For nonaccrual TDRs, the allowance for credit losses is provided for these loans using the discounted cash flow method, or based on the fair value of the collateral. For TDRs accounted for as accruing loans, the allowance for credit losses is determined by using the discounted cash flow method whereby the estimated future cash flows are discounted using the original effective interest rate of the loans prior to modification.
Allowance for Off-Balance Sheet Credit Instruments	Allowance for Off-Balance Sheet Credit Instruments—The MUFG Group maintains an allowance for credit losses on off-balance sheet credit instruments that are not unconditionally cancellable, including commitments to extend credit, guarantees, standby letters of credit and other financial instruments. The allowance is recorded as a liability in Other liabilities. The MUFG Group adopts the same methodology used in determining the allowance for credit losses on loans. Potential credit losses related to derivatives are considered in the fair value of the derivatives.
Premises and Equipment	Premises and Equipment —Premises and equipment are stated at cost less accumulated depreciation and amortization. Depreciation is charged to operations over the estimated useful lives of the related assets. Leasehold improvements are depreciated over the terms of the respective leases or the estimated useful lives of the improvements, whichever is shorter. MUFG, MUFG Bank and Mitsubishi UFJ Trust and Banking apply the declining-balance method in depreciating their premises and equipment, while other subsidiaries mainly apply the straight-line method, at rates principally based on the following estimated useful lives: Years Buildings 15 to 50 Equipment and furniture 2 to 20 Leasehold improvements 2 to 39 Maintenance, repairs and minor improvements are charged to operations as incurred. Major improvements are capitalized. Net gains or losses on dispositions of premises and equipment are included in Other non-interest income or expense, as appropriate. Long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of an asset to be held and used is measured by a comparison of the carrying amount to future undiscounted net cash flows expected to be generated by the asset. If an asset is considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the asset exceeds the fair value. For purposes of recognition and measurement of an impairment loss, a long-lived asset or assets are grouped with other assets and liabilities at the lowest level with independent and identifiable cash flows. Assets to be disposed of by sale are reported at the lower of the carrying amount or fair value less estimated cost to sell.
Goodwill	Goodwill —The MUFG Group recognizes goodwill, as of the acquisition date, measured as the excess of the purchase price over the fair value of the net assets acquired. Goodwill related to investments in equity method investees is included in Other assets as a part of the carrying amount of investments in equity method investees. Goodwill arising from a business combination is not amortized but is tested at least annually for impairment. Goodwill is recorded at a designated reporting unit level for the purpose of assessing impairment.
Intangible Assets	Intangible assets —Intangible assets consist of software, core deposit intangibles, customer relationships, trade names and other intangible assets. These are amortized over their estimated useful lives unless they have indefinite useful lives. Amortization of intangible assets is computed in a manner that best reflects the economic benefits of the intangible assets as follows: Useful lives (years) Amortization method Software 3 to 10 Straight-line Core deposit intangibles 9 to 16 Straight-line Customer relationships 7 to 27 Straight-line, Declining-balance Trade names 10 to 40 Straight-line Intangible assets having indefinite useful lives are not amortized but are subject to annual impairment tests. An impairment exists if the carrying value of an indefinite-lived intangible asset exceeds its fair value. For other intangible assets subject to amortization, an impairment is recognized if the carrying amount is not recoverable and the carrying amount exceeds the fair value of the intangible asset.
Assets and Liabilities Held for Sale	Assets and Liabilities Held for Sale —The MUFG Group classifies assets and liabilities as held for sale (“disposal group”) when management, having the authority to approve the action, commits to a plan to sell the disposal group and the sale is probable within one year, actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn, and the disposal group is available for immediate sale in its present condition subject only to terms that are usual and customary for sales of such disposal groups. The disposal group is measured at the lower of carrying value or fair value less costs to sell. Any loss resulting from the measurement is recognized in the period the held-for-sale criteria are met. Conversely, gains are not recognized until the date of the sale. After being classified as held for sale, loans held for investment are transferred to loans held for sale, carried at the lower of cost or fair value measured on a portfolio basis, and no allowance for loan losses is estimated. After being classified as held for sale, held-to-maturity debt securities are transferred to securities available for sale and assets are not depreciated or amortized. In September 2021, the MUFG Group agreed to the sale of all shares in MUFG Union Bank, N.A., the wholly-owned primary operating subsidiary in the United States, to U.S. Bancorp. As a result, the assets and liabilities of MUFG Union Bank, which were transferred to U.S. Bancorp, were reclassified as held for sale, and included in Other assets and Other liabilities in the accompanying consolidated balance sheets at March 31, 2022. See Note 2 for further discussion. Unless otherwise indicated, all other notes to the consolidated financial statements do not include amounts of assets and liabilities held for sale.
Accrued Severance and Pension Liabilities	Accrued Severance and Pension Liabilities—The MUFG Group has defined benefit pension plans and other postretirement benefit plans, including severance indemnities plans (“SIPs”). The liabilities related to these plans are computed and recognized based on actuarial computations. Net actuarial gains and losses that arise from differences between actual experience and assumptions are generally amortized over the average remaining service period of participating employees if it exceeds the corridor, which is defined as the greater of 10% of plan assets or the projected benefit obligation. Under the guidance related to employers’ accounting for defined benefit pension and other postretirement plans, the MUFG Group recognizes a net liability or asset to report the funded status of its defined benefit pension and other postretirement plans in the accompanying consolidated balance sheets and mainly recognizes changes in the funded status of defined benefit pension and other postretirement plans in the year in which the changes occur in Accumulated OCI. Based on actuarial computations of current and future employee benefits, the service cost component is charged to Salaries and employee benefits while other components of net pension benefit/cost are charged to Other non-interest expenses. The MUFG Group measures plan assets and benefit obligations as of the date of the consolidated balance sheets.
Long-term Debt	Long-Term Debt—Premiums, discounts and issuance costs of long-term debt are amortized based on the method that approximates the interest method over the term of the long-term debt.
Obligations under Guarantees	Obligations under Guarantees—The MUFG Group provides customers with a variety of guarantees and similar arrangements, including standby letters of credit, financial and performance guarantees, credit protection, and liquidity facilities. The MUFG Group recognizes guarantee fee income over the guarantee period based on the contractual terms of the guarantee contracts. It is the MUFG Group’s business practice to receive a guarantee fee at the inception of the guarantee, which approximates market value of the guarantee and is initially recorded as a liability, which is then recognized as guarantee fee income over the guarantee period.
Allowance for Repayment of Excess Interest	Allowance for Repayment of Excess Interest—The MUFG Group maintains an allowance for repayment of excess interest based on an analysis of past experience of reimbursement of excess interest, borrowers’ profile, recent trend of borrowers’ claims for reimbursement, and management’s future forecasts. The allowance is recorded as a liability in Other liabilities.
Fees and Commissions	Fees and Commissions —The MUFG Group recognizes revenue from contracts with customers in the amount of consideration it expects to receive upon the transfer of control of a good or service. The timing of recognition is dependent on whether the MUFG Group satisfies a performance obligation by transferring control of the product or service to a customer over time or at a point in time. The following is an explanation of the MUFG Group’s key revenue from contracts with customers and the timing of its recognition. Fees and commissions on deposits consist of fees and commissions charged for transaction-based services such as usage of automated teller machines and withdrawal services, and for periodic account maintenance services. The MUFG Group’s performance obligation for transaction-based services is satisfied and the fees and commissions are recognized at the point in time when the MUFG Group’s performance under the terms of a contractual arrangement is completed, which is at the settlement of a transaction, while the MUFG Group’s performance obligation for maintenance services is satisfied and the fees and commissions are recognized over the course of each month. Fees and commissions on remittances and transfers consist of fees and commissions charged for settlement transactions such as domestic fund remittances, including electronic banking transactions, and are recognized at the point in time when the MUFG Group’s performance under the terms of a contractual arrangement is completed, which is at the settlement of a transaction. Fees and commissions on foreign trading business consist of fees and commissions charged for fund collection and trade-related financing services related to foreign trading business, and are recognized in the period in which the related service is provided. If they arise from foreign trading business activities under which the customer consumes the related services at a point in time (e.g. foreign exchange fees), such fees are recognized at the same point in time. If they arise from foreign trading business activities under which the customer consumes the related services equally over the period of service (e.g. commercial letters of credit), such fees are recognized over the same period. Fees and commissions on credit card business consist of fees and commissions such as interchange income, royalty and other service charges from franchisees. Interchange income from the credit card business is recognized as processed transactions are settled through the associated payment networks, while royalty and other service charges related to the credit card business are recognized on a straight-line basis over the period of service. Fees and commissions on security-related services primarily consist of fees and commissions for sales and transfers of securities including investment funds, underwriting, brokerage and advisory services, arrangement fees on securitizations, and agency services for the calculation and payment of dividends. Fees and commissions on security-related services are recognized in the period in which the related service is provided. If they arise from security-related services under which the customer consumes the related services at a point in time (e.g. sales and transfers of securities are executed at the customer’s direction; underwritings of debt and equity securities or securitizations are completed at the trade date; advice is provided to the clients; and dividends are calculated and then paid to investors), such fees are recognized at the same point in time. If they arise from security-related services under which the customer consumes the related services equally over the period of service (e.g. retainer fees on M&A advisory fees), such fees are recognized over the same period. The advisory fees which are paid upon meeting certain performance goals (e.g. success fees on M&A advisory fees) are recognized at the point in time when the performance goals are met. Fees and commissions on administration and management services for investment funds primarily consist of fees and commissions earned from administrating and managing investment funds, including assets under management on behalf of clients. Such fees and commissions are recognized equally over the period of service at the amount calculated primarily based on the outstanding amount of each entrusted asset, the percentage of fees, and the extent of the service provided to administer the investment funds. Trust fees consist primarily of fees earned by fiduciary asset management and administration services for corporate pension plans and investment funds, and are recognized on an accrual basis, generally based on the volume of trust assets under management and/or the operating performance for the accounting period of each trust account. With respect to the trust accounts with a guarantee of trust principal, trust fees are determined based on the profits earned by individual trust accounts during the trust accounting period, less deductions, including provision for reserves, impairment for individual investments and dividends paid to beneficiary certificate holders. The trust fees for these trust accounts are accrued based on the amounts expected to be earned during the accounting period of each trust account. Guarantee fees consist of fees related to the guarantee business such as providing guarantees on residential mortgage loans and other loans, and are recognized over the contractual periods of the respective guarantees. Insurance commissions consist of commissions earned from third-party insurance companies for marketing and selling insurance products and for the maintenance of insurance contracts. The former is recognized at the point in time which the associated service is fulfilled as the insurance contract is established by the insurance company, while the latter is recognized over the insurance period. Fees and commissions on real estate business primarily consist of fees from real estate agent services, and are recognized in the period in which the related service is provided when assisting customers in the sales or purchase of real estate property.
Income Taxes	Income Taxes —The MUFG Group accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and deferred tax liabilities for the expected future tax consequences of events that have been included in the accompanying consolidated financial statements. Under this method, deferred tax assets and deferred tax liabilities are determined based on the differences between the financial statements and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and deferred tax liabilities is recognized in income in the period that includes the enactment date. The MUFG Group records net deferred tax assets to the extent these assets will more likely than not be realized. In making such determination, all available positive and negative evidence is considered, including future reversals of existing taxable temporary differences, projected future taxable income, tax planning strategies and recent financial operations. In the event the MUFG Group were to determine that it would be able to realize deferred tax assets in the future in excess of their net recorded amount, the MUFG Group would make an adjustment to the valuation allowance, which would reduce the provision for income taxes.
Free Distributions of Common Shares	Free Distributions of Common Shares—As permitted by the Companies Act of Japan (the “Companies Act”), Japanese companies, upon approval by the Board of Directors, may make a free distribution of shares, in the form of a “stock split” as defined, to shareholders. In accordance with generally accepted accounting practice in Japan, such distribution does not give rise to any change in capital stock or capital surplus accounts. Common shares distributed are recorded as shares issued on the distribution date. See Note 18 for further information.
Earnings (loss) Per Common Share	Earnings (loss) per Common Share—Basic earnings per share (“EPS”) excludes dilutive effects of potential common shares and is computed by dividing earnings applicable to common stock shareholders by the weighted average number of common shares outstanding for the period, while diluted EPS gives effect to all dilutive potential common shares that were outstanding during the period. See Note 22 for the computation of basic and diluted EPS.
Treasury Stock	Treasury Stock—The MUFG Group presents its treasury stock, including shares of MUFG owned by its subsidiaries and affiliated companies, as a reduction of equity on the accompanying consolidated balance sheets at cost and accounts for treasury stock transactions under an average cost method. Gains (losses) on sales of treasury stock are charged to capital surplus and unappropriated retained earnings.
Comprehensive Income	Comprehensive Income—Comprehensive income includes net income (loss) before attribution to noncontrolling interests and other comprehensive income (“OCI”). All changes in unrealized gains and losses on investment securities, unrealized gains and losses on derivatives qualifying for cash flow hedges, defined benefit plans and foreign currency translation adjustments constitute OCI and are presented, with related income tax effects, in the accompanying consolidated statements of comprehensive income. OCI also includes changes in the instrument-specific credit risk on financial liabilities (“debt valuation adjustments” or “DVA”) accounted for under the fair value option.
Stock-Based Compensation	Stock-Based Compensation —MUFG and certain of its subsidiaries have a stock compensation-type stock option plan (“Stock Option Plan”) for directors (excluding outside directors and directors serving as audit committee members), corporate executives, executive officers and senior fellows (collectively, “officers”). Compensation costs under the Stock Option Plan are recognized based on the grant date fair value of the stock option (“Stock Acquisition Rights”) over the period during officers are required to provide service in accordance with the terms of the plan. MUFG and certain of its subsidiaries also have performance-based stock
Reclassifications	Reclassifications Reclassifications have been made to the consolidated financial statements for the fiscal year ended March 31, 2022 to conform to the presentation for the fiscal year ended March 31, 2023. These reclassifications consist of the presentation of “Loss on valuation adjustment for loans held for sale held by MUFG Union Bank” as a new line item which had previously been presented in “Other non-interest expenses” in the consolidated statement of operations and had been previously included in “Other-net” in the statement of cash flows for the fiscal year ended March 31, 2022, respectively. These reclassifications did not result in a change to previously reported financial position, results of operations or cash flows.
Accounting Changes	Accounting Changes Accounting for Obligations to Safeguard Crypto-Assets an Entity Holds for Platform Users —In March 2022, the U.S. Securities and Exchange Commission (“SEC”) issued Staff Accounting Bulletin No. 121 which expresses the views of the SEC staff regarding the accounting for obligations to safeguard crypto-assets an entity holds for platform users. This guidance requires an entity that performs crypto asset custodial activities, whether directly or through an agent acting on its behalf, to record a liability with a corresponding asset. In addition, the guidance requires disclosure of the nature and amount of crypto assets the entity is responsible for safeguarding for its customers. This guidance is effective for interim and annual periods ending after June 15, 2022. The MUFG Group adopted this guidance on April 1, 2022, and there was no material impact on its financial position and results of operations.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements Troubled Debt Restructurings and Vintage Disclosures —In March 2022, the Financial Accounting Standards Board (“FASB”) issued new guidance which eliminates the accounting and disclosure requirements for TDRs by creditors and introduces new required disclosures for loan modifications made to borrowers experiencing financial difficulty. The guidance also amends the requirement for vintage disclosures to disclose current period gross charge-offs by year of origination. This guidance is effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. The guidance should be applied prospectively, except for requirements related to the recognition and measurement of TDRs, for which entities have the option to apply a modified retrospective transition method. The MUFG Group adopted the guidance on April 1, 2023, using the modified retrospective transition method on the requirements related to the recognition and measurement of TDRs, and there will be no material impact on its financial position and results of operations. The allowance for modified loans will mainly be measured using a discounted cash flow methodology, that utilizes a discount rate that is based on the post-modification contractual interest rate, other than those in the Card segment, for which the allowance will be measured using collectively-assessed allowance methodology. Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions —In June 2022, the FASB issued new guidance which clarifies the guidance when measuring the fair value of an equity security subject to contractual restrictions that prohibit the sale of an equity security. The guidance also introduces new disclosure requirements for equity securities subject to contractual sale restrictions that are measured at fair value. This guidance is effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. The MUFG Group is currently evaluating what effect this guidance will have on its consolidated financial statements and related disclosures.

Basis of Financial Statements_3

Basis of Financial Statements and Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Mar. 31, 2023
Accounting Policies [Abstract]
Estimated Useful Lives of Premises and Equipment	MUFG Bank and Mitsubishi UFJ Trust and Banking apply the declining-balance method in depreciating their premises and equipment, while other subsidiaries mainly apply the straight-line method, at rates principally based on the following estimated useful lives: Years Buildings 15 to 50 Equipment and furniture 2 to 20 Leasehold improvements 2 to 39
Useful Lives of Intangible Assets and Amortization Method by Major Class	Amortization of intangible assets is computed in a manner that best reflects the economic benefits of the intangible assets as follows: Useful lives (years) Amortization method Software 3 to 10 Straight-line Core deposit intangibles 9 to 16 Straight-line Customer relationships 7 to 27 Straight-line, Declining-balance Trade names 10 to 40 Straight-line

Business Developments (Tables)

Business Developments (Tables)	12 Months Ended
	Mar. 31, 2023
Business Combinations [Abstract]
Disposal Groups, Including Discontinued Operations	Assets and liabilities reclassified as held for sale at March 31, 2022 are shown below: At March 31, 2022 (in millions) Assets held for sale: Interest-earning deposits in other banks ¥ 1,110,633 Investment securities 3,188,257 Loans, net of allowance for credit losses 6,561,316 Other 761,361 Total ¥ 11,621,567 Liabilities held for sale: Deposits ¥ 10,448,481 Other 709,179 Total ¥ 11,157,660

Investment Securities (Tables)

Investment Securities (Tables)	12 Months Ended
	Mar. 31, 2023
Investments, Debt and Equity Securities [Abstract]
Amortized Cost, Gross Unrealized Gains (Losses) and Fair Value of Investment Securities	The following tables present the amortized cost, gross unrealized gains and losses, and fair value of Available-for-sale debt securities and Held-to-maturity debt securities at March 31, 2022 and 2023: At March 31, 2022: Amortized cost Gross unrealized gains Gross unrealized losses Fair value (in millions) Available-for-sale debt securities: Japanese national government and Japanese government agency bonds ¥ 34,383,131 ¥ 77,144 ¥ 132,511 ¥ 34,327,764 Japanese prefectural and municipal bonds 4,154,459 6,672 14,987 4,146,144 Foreign government and official institution bonds 2,671,797 8,586 49,040 2,631,343 Corporate bonds 1,081,620 9,601 1,073 1,090,148 Residential mortgage-backed securities 900,799 256 648 900,407 Asset-backed securities 1,547,098 41,544 222 1,588,420 Other debt securities 104,869 2,243 3,533 103,579 Commercial paper 1,010,607 49 19 1,010,637 Total ¥ 45,854,380 ¥ 146,095 ¥ 202,033 ¥ 45,798,442 Held-to-maturity debt securities: Japanese national government and Japanese government agency bonds ¥ 1,808,312 ¥ 13,691 ¥ 3,633 ¥ 1,818,370 Japanese prefectural and municipal bonds 175,072 4 1,116 173,960 Residential mortgage-backed securities 234,652 49 8,778 225,923 Asset-backed securities 2,377,073 12,352 1,373 2,388,052 Total ¥ 4,595,109 ¥ 26,096 ¥ 14,900 ¥ 4,606,305 At March 31, 2023: Amortized cost Gross unrealized gains Gross unrealized losses Fair value (in millions) Available-for-sale debt securities: Japanese national government and Japanese government agency bonds ¥ 26,153,862 ¥ 16,510 ¥ 123,769 ¥ 26,046,603 Japanese prefectural and municipal bonds 2,773,750 2,063 15,872 2,759,941 Foreign government and official institution bonds 3,029,042 2,072 108,372 2,922,742 Corporate bonds 1,051,347 9,791 2,977 1,058,161 Residential mortgage-backed securities 1,110,126 569 441 1,110,254 Asset-backed securities 1,418,563 16,116 4,364 1,430,315 Other debt securities 417,755 1,873 6,842 412,786 Total ¥ 35,954,445 ¥ 48,994 ¥ 262,637 ¥ 35,740,802 Held-to-maturity debt securities: Japanese national government and Japanese government agency bonds ¥ 13,860,457 ¥ 32,927 ¥ 19,789 ¥ 13,873,595 Japanese prefectural and municipal bonds 1,144,825 2,473 7,808 1,139,490 Corporate bonds 46,730 213 3 46,940 Residential mortgage-backed securities 3,913,346 13,606 105,754 3,821,198 Asset-backed securities 2,554,723 19 49,809 2,504,933 Total ¥ 21,520,081 ¥ 49,238 ¥ 183,163 ¥ 21,386,156
Amortized Cost and Fair Value by Contractual Maturity	Debt securities not due at a single maturity date and securities embedded with call or prepayment options, such as mortgage-backed securities, are included in the table below based on their contractual maturities. Held-to-maturity debt securities Available-for-sale debt securities Amortized cost Fair value Fair value (in millions) Due in one year or less ¥ 602,851 ¥ 604,679 ¥ 22,126,650 Due from one year to five years 9,953,844 9,976,471 7,917,008 Due from five years to ten years 6,143,527 6,101,314 2,280,186 Due after ten years 4,819,859 4,703,692 3,416,958 Total ¥ 21,520,081 ¥ 21,386,156 ¥ 35,740,802
Investments by Length and Category in Continuous Loss Position	The following tables show the gross unrealized losses and fair value of Available-for-sale debt securities at March 31, 2022 and 2023 by length of time that individual securities in each category have been in a continuous loss position: Less than 12 months 12 months or more Total At March 31, 2022: Fair value Gross unrealized losses Fair value Gross unrealized losses Fair value Gross unrealized losses Number of securities (in millions, except number of securities) Available-for-sale debt securities: Japanese national government and Japanese government agency bonds ¥ 22,998,960 ¥ 126,516 ¥ 353,932 ¥ 5,995 ¥ 23,352,892 ¥ 132,511 486 Japanese prefectural and municipal bonds 2,430,603 14,864 31,139 123 2,461,742 14,987 926 Foreign government and official institution bonds 1,376,267 31,470 167,446 17,570 1,543,713 49,040 87 Corporate bonds 427,739 925 94,364 148 522,103 1,073 173 Residential mortgage-backed securities 178,857 58 391,265 590 570,122 648 12 Asset-backed securities 115,695 222 — — 115,695 222 12 Other debt securities 44,128 3,526 1,089 7 45,217 3,533 4 Commercial paper 367,043 19 — — 367,043 19 30 Total ¥ 27,939,292 ¥ 177,600 ¥ 1,039,235 ¥ 24,433 ¥ 28,978,527 ¥ 202,033 1,730 Less than 12 months 12 months or more Total At March 31, 2023: Fair value Gross unrealized losses Fair value Gross unrealized losses Fair value Gross unrealized losses Number of securities (in millions, except number of securities) Available-for-sale debt securities: Japanese national government and Japanese government agency bonds ¥ 7,644,337 ¥ 8,066 ¥ 2,105,210 ¥ 115,703 ¥ 9,749,547 ¥ 123,769 438 Japanese prefectural and municipal bonds 962,234 1,781 711,896 14,091 1,674,130 15,872 723 Foreign government and official institution bonds 858,970 18,677 1,436,798 89,695 2,295,768 108,372 118 Corporate bonds 331,411 1,800 249,088 1,177 580,499 2,977 256 Residential mortgage-backed securities 166,778 5 522,774 436 689,552 441 15 Asset-backed securities 310,388 4,170 39,806 194 350,194 4,364 32 Other debt securities 48,804 1,266 47,886 5,576 96,690 6,842 28 Total ¥ 10,322,922 ¥ 35,765 ¥ 5,113,458 ¥ 226,872 ¥ 15,436,380 ¥ 262,637 1,610
Net Realized Gains (Losses) on Sales of Equity Securities and Net Unrealized Gains (Losses) on Equity Securities Still Held at the Reporting Date	The following table presents net realized gains (losses) on sales of equity securities, and net unrealized gains (losses) on equity securities still held at March 31, 2021, 2022 and 2023: Fiscal years ended March 31, 2021 2022 2023 (in millions) Net gains (losses) recognized during the period (1) ¥ 1,467,763 ¥ (125,271) ¥ 104,023 Less: Net gains (losses) recognized during the period on equity securities sold during the period 47,775 (38,042) 18,313 Net unrealized gains (losses) recognized during the reporting period still held at the reporting date ¥ 1,419,988 ¥ (87,229) ¥ 85,710 Note:
Carrying Value of Nonmarketable Equity Securities	The following table presents the carrying value of nonmarketable equity securities that are measured at cost minus impairment, if any, plus or minus changes resulting from observable price changes (“measurement alternative”), held at March 31, 2022 and 2023: 2022 2023 (in millions) Measurement alternative balance ¥ 310,570 ¥ 381,928
Related Adjustments for Nonmarketable Equity Securities	The related adjustments for these securities for the fiscal years ended March 31, 2021, 2022 and 2023 were as follows: Fiscal years ended March 31, 2021 2022 2023 (in millions) Measurement alternative impairment losses (1)(4) ¥ (5,188) ¥ (4,299) ¥ (8,230) Measurement alternative downward changes for observable prices (1)(2)(3)(5) ¥ — ¥ — ¥ (440) Measurement alternative upward changes for observable prices (1)(2)(3)(6) ¥ 21,710 ¥ 3,067 ¥ 5,090 Notes: (1) Included in Investment securities gains (losses)—net. (2) Under the measurement alternative, nonmarketable equity securities are carried at cost plus or minus changes resulting from observable prices in orderly transactions for the identical or a similar investment of the same issuer. (3) The MUFG Group applied measurement alternative downward or upward changes to certain nonmarketable equity securities, resulting from observable prices in orderly transactions, such as partial repurchase and transactions by other entities. (4) The cumulative impairment losses at March 31, 2022 and 2023 were ¥12,354 million and ¥20,151 million respectively. (5) The cumulative downward changes for observable prices at March 31, 2022 and 2023 were ¥954 million and ¥1,393 million, respectively.

Loans and Allowance for Credi_2

Loans and Allowance for Credit Losses (Tables)	12 Months Ended
	Mar. 31, 2023
Receivables [Abstract]
Financing Receivable, Past Due	The table below presents total outstanding loans and past due analysis by class at March 31, 2022 and 2023. Past Due At March 31, 2022: 1-3 months Greater Total Current Loans Held for Sale (1) Total Past Due 90 Days and (in millions) Commercial Domestic ¥ 12,556 ¥ 9,138 ¥ 21,694 ¥ 53,953,767 ¥ 69,257 ¥ 54,044,718 ¥ 3,260 Foreign 17,405 10,598 28,003 34,578,265 374,011 34,980,279 — Residential 32,078 13,598 45,676 13,255,829 — 13,301,505 3,360 Card 10,250 26,818 37,068 427,198 — 464,266 — MUAH 625 — 625 2,741,503 70,841 2,812,969 — Krungsri 115,636 126,494 242,130 6,580,635 — 6,822,765 — Other 21,729 21,152 42,881 1,002,240 — 1,045,121 — Total ¥ 210,279 ¥ 207,798 ¥ 418,077 ¥ 112,539,437 ¥ 514,109 ¥ 113,471,623 ¥ 6,620 Unearned income, unamortized premiums—net and deferred loan fees—net (322,230) Total ¥ 113,149,393 Past Due At March 31, 2023: 1-3 months Greater Total Current Loans Total Past Due 90 Days and Accruing (in millions) Commercial Domestic ¥ 6,599 ¥ 12,485 ¥ 19,084 ¥ 55,519,315 ¥ 87,659 ¥ 55,626,058 ¥ 2,652 Foreign 8,818 33,203 42,021 41,268,228 879,423 42,189,672 12,158 Residential 32,514 11,496 44,010 12,830,845 — 12,874,855 3,342 Card 14,992 26,587 41,579 431,263 — 472,842 — Krungsri 188,802 136,627 325,429 7,457,206 — 7,782,635 — Other (2) 14,241 20,235 34,476 1,375,934 — 1,410,410 — Total ¥ 265,966 ¥ 240,633 ¥ 506,599 ¥ 118,882,791 ¥ 967,082 ¥ 120,356,472 ¥ 18,152 Unearned income, unamortized premiums—net and deferred loan fees—net (401,012) Total ¥ 119,955,460 Notes: (1) Does not include the loans in transferred business of MUFG Union Bank to U.S. Bancorp, which is included in Other assets in the accompanying consolidated balance sheets at March 31, 2022. See Note 2 for further information. (2) The Other segment in the above table included loans of ¥176,691 million, which was previously included in the MUAH segment, at March 31, 2023.
Nonaccrual Loans by Class	The information on nonaccrual loans by class at March 31, 2022 and 2023, and recognized interest income on nonaccrual loans by class for the fiscal years ended March 31, 2022 and 2023 are shown below: Recorded Loan Balance March 31, 2022: Nonaccrual Loans (1) Nonaccrual Loans Not Requiring an Allowance for Credit Losses (2) Recognized Interest Income (in millions) Commercial Domestic ¥ 633,768 ¥ 109,919 ¥ 6,532 Foreign 224,566 84,837 4,734 Residential 56,175 3,579 811 Card 62,578 — 25 MUAH 15,349 — 77 Krungsri 165,775 2,824 4,076 Other 26,618 7 3,688 Total ¥ 1,184,829 ¥ 201,166 ¥ 19,943 Recorded Loan Balance March 31, 2023: Nonaccrual Loans (1) Nonaccrual Loans Not Requiring an Allowance for Credit Losses (2) Recognized Interest Income (in millions) Commercial Domestic ¥ 401,836 ¥ 99,657 ¥ 5,409 Foreign 246,675 65,242 5,918 Residential 47,910 3,962 1,052 Card 67,159 — 17 Krungsri 211,705 3,286 6,482 Other 29,848 5 3,885 Total ¥ 1,005,133 ¥ 172,152 ¥ 22,763 Notes: (1) Nonaccrual loans in the above table do not include loans held for sale of ¥7,946 million and ¥9,205 million at March 31, 2022 and 2023, respectively.
TDRs by Class	The following table summarizes the MUFG Group’s TDRs by class for the fiscal years ended March 31, 2021, 2022 and 2023: 2021 2022 Troubled Debt Restructurings Pre- Modification Outstanding Recorded Investment Post- Modification Outstanding Recorded Investment Pre- Modification Outstanding Recorded Investment Post- Modification Outstanding Recorded Investment (in millions) Commercial (1)(3) Domestic ¥ 39,282 ¥ 39,282 ¥ 168,348 ¥ 167,342 Foreign 33,839 33,839 16,144 16,144 Residential (1)(3) 18,121 18,121 22,484 22,484 Card (2)(3) 20,857 19,737 20,937 19,824 MUAH (2)(3) 22,801 22,763 11,384 11,384 Krungsri (2)(3) 18,548 18,548 14,869 14,869 Other (2) 24,968 24,956 11,403 11,403 Total ¥ 178,416 ¥ 177,246 ¥ 265,569 ¥ 263,450 2021 2022 Troubled Debt Restructurings Recorded Investment (in millions) Commercial (1)(3) Domestic ¥ 16,179 ¥ 12,020 Foreign 9,861 13,180 Residential (1)(3) 157 203 Card (2)(3) 2,733 2,746 MUAH (2)(3) 3,437 — Krungsri (2)(3) 6,226 5,657 Other (2) 857 4,715 Total ¥ 39,450 ¥ 38,521 Notes: (1) TDRs for the Commercial and Residential segments include accruing loans, and do not include nonaccrual loans. (2) TDRs for the Card, MUAH, Krungsri and Other segments include accrual and nonaccrual loans. (3) For the fiscal year ended March 31, 2021, extension of the stated maturity date of loans was the primary concession type in the Commercial, Residential and Krungsri segments, reduction in the stated rate was the primary concession type in the Card segment and forbearance was the primary concession type in the MUAH segment. For the fiscal year ended March 31, 2022, extension of the stated maturity date of loans was the primary concession type in the Commercial, Residential and Krungsri segments, reduction in the stated rate was the primary concession type in the Card segment and forbearance was the primary concession type in the MUAH segment. 2023 Troubled Debt Restructurings Pre- Modification Outstanding Recorded Investment Post- Modification Outstanding Recorded Investment (in millions) Commercial (1)(3) Domestic ¥ 68,477 ¥ 68,477 Foreign 35,319 35,319 Residential (1)(3) 15,291 15,291 Card (2)(3) 22,355 21,407 Krungsri (2)(3) 94,790 94,790 Other (2) 21,141 21,141 Total ¥ 257,373 ¥ 256,425 2023 Troubled Debt Restructurings Recorded Investment (in millions) Commercial (1)(3) Domestic ¥ 8,123 Foreign 11,945 Residential (1)(3) 116 Card (2)(3) 2,783 Krungsri (2)(3) 5,289 Other (2) 1,569 Total ¥ 29,825 Notes: (1) TDRs for the Commercial and Residential segments include accruing loans, and do not include nonaccrual loans. (2) TDRs for the Card, Krungsri and Other segments include accrual and nonaccrual loans.
Credit Quality Indicators of Loans by Class	Credit quality indicators of loans and fiscal year of origination by class at March 31, 2022 and 2023 are shown below: Term Loans Amortized Cost Basis by Origination Year Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Loans Amortized Cost Basis Total (1) At March 31, 2022: 2021 2020 2019 2018 2017 Prior (in millions) Commercial: ¥ 27,445,726 ¥ 10,850,943 ¥ 7,634,337 ¥ 6,509,048 ¥ 3,924,194 ¥ 8,827,987 ¥ 23,380,258 ¥ 9,236 ¥ 88,581,729 Domestic 19,038,698 7,937,529 5,003,439 4,499,174 2,817,819 6,639,931 8,038,871 — 53,975,461 Normal 18,756,933 7,646,272 4,669,784 4,335,640 2,698,956 6,205,070 7,686,772 — 51,999,427 Close Watch 257,276 266,311 167,387 150,834 104,047 307,367 306,193 — 1,559,415 Likely to become Bankrupt or Legally/Virtually Bankrupt 24,489 24,946 166,268 12,700 14,816 127,494 45,906 — 416,619 Foreign 8,407,028 2,913,414 2,630,898 2,009,874 1,106,375 2,188,056 15,341,387 9,236 34,606,268 Normal 8,250,729 2,814,362 2,501,594 1,881,532 1,031,105 2,031,243 15,089,995 1,912 33,602,472 Close Watch 149,502 90,355 73,253 110,170 36,274 93,622 223,203 7,324 783,703 Likely to become Bankrupt or Legally/Virtually Bankrupt 6,797 8,697 56,051 18,172 38,996 63,191 28,189 — 220,093 Residential ¥ 782,446 ¥ 641,706 ¥ 976,736 ¥ 866,282 ¥ 900,959 ¥ 9,104,691 ¥ 28,685 ¥ — ¥ 13,301,505 Accrual 782,314 641,499 976,162 865,761 900,120 9,054,326 26,460 — 13,246,642 Nonaccrual 132 207 574 521 839 50,365 2,225 — 54,863 Card ¥ 19 ¥ 106 ¥ 182 ¥ 175 ¥ 276 ¥ 437 ¥ 400,552 ¥ 62,519 ¥ 464,266 Accrual 1 8 8 9 13 41 387,648 13,960 401,688 Nonaccrual 18 98 174 166 263 396 12,904 48,559 62,578 MUAH ¥ 364,236 ¥ 306,134 ¥ 147,821 ¥ 62,455 ¥ 50,264 ¥ 122,149 ¥ 1,689,069 ¥ — ¥ 2,742,128 Credit Quality Based on Internal Credit Ratings Pass 357,334 298,658 126,083 48,653 43,938 117,778 1,642,946 — 2,635,390 Special Mention 3,106 — 20,013 2,415 5,981 805 33,471 — 65,791 Classified 3,796 7,476 1,725 11,387 345 3,566 12,652 — 40,947 Krungsri ¥ 1,350,265 ¥ 964,094 ¥ 901,955 ¥ 680,090 ¥ 329,847 ¥ 481,981 ¥ 2,099,727 ¥ 14,806 ¥ 6,822,765 Performing 1,297,054 891,374 788,828 573,840 270,783 363,905 1,961,481 — 6,147,265 Under-Performing 42,326 58,084 90,519 80,841 45,982 78,690 113,283 — 509,725 Non-Performing 10,885 14,636 22,608 25,409 13,082 39,386 24,963 14,806 165,775 Other ¥ 400,482 ¥ 143,336 ¥ 85,496 ¥ 40,445 ¥ 35,346 ¥ — ¥ 340,016 ¥ — ¥ 1,045,121 Accrual 398,744 136,317 83,278 38,609 32,934 — 328,621 — 1,018,503 Nonaccrual 1,738 7,019 2,218 1,836 2,412 — 11,395 — 26,618 Term Loans Amortized Cost Basis by Origination Year Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Loans Amortized Cost Basis Total (1) At March 31, 2023: 2022 2021 2020 2019 2018 Prior (in millions) Commercial: ¥ 32,957,651 ¥ 10,100,587 ¥ 8,626,319 ¥ 5,653,421 ¥ 4,385,807 ¥ 9,366,641 ¥ 25,743,172 ¥ 15,050 ¥ 96,848,648 Domestic 20,132,474 6,099,692 6,675,895 4,002,329 3,214,528 7,406,590 8,006,891 — 55,538,399 Normal 19,867,845 5,957,659 6,472,135 3,823,755 3,126,146 6,722,981 7,722,379 — 53,692,900 Close Watch 222,202 124,499 172,270 114,534 74,635 567,514 262,686 — 1,538,340 Likely to become Bankrupt or Legally/Virtually Bankrupt 42,427 17,534 31,490 64,040 13,747 116,095 21,826 — 307,159 Foreign 12,825,177 4,000,895 1,950,424 1,651,092 1,171,279 1,960,051 17,736,281 15,050 41,310,249 Normal 12,508,547 3,931,278 1,857,934 1,577,120 1,083,934 1,824,977 17,540,822 15,050 40,339,662 Close Watch 262,388 34,656 60,637 50,210 71,966 79,450 174,436 — 733,743 Likely to become Bankrupt or Legally/Virtually Bankrupt 54,242 34,961 31,853 23,762 15,379 55,624 21,023 — 236,844 Residential ¥ 688,000 ¥ 747,161 ¥ 607,237 ¥ 919,359 ¥ 811,469 ¥ 9,077,669 ¥ 23,960 ¥ — ¥ 12,874,855 Accrual 687,800 747,121 607,047 918,781 810,933 9,034,589 22,093 — 12,828,364 Nonaccrual 200 40 190 578 536 43,080 1,867 — 46,491 Card ¥ 12 ¥ 147 ¥ 240 ¥ 239 ¥ 181 ¥ 587 ¥ 403,687 ¥ 67,749 ¥ 472,842 Accrual 1 7 10 8 9 37 391,237 14,374 405,683 Nonaccrual 11 140 230 231 172 550 12,450 53,375 67,159 Krungsri ¥ 1,824,628 ¥ 1,046,959 ¥ 654,933 ¥ 692,616 ¥ 515,731 ¥ 605,053 ¥ 2,427,923 ¥ 14,792 ¥ 7,782,635 Performing 1,689,034 956,470 570,865 553,616 406,258 459,322 2,292,418 — 6,927,983 Under-Performing 108,770 66,555 67,504 111,435 85,928 98,103 104,652 — 642,947 Non-Performing 26,824 23,934 16,564 27,565 23,545 47,628 30,853 14,792 211,705 Other ¥ 551,560 ¥ 190,786 ¥ 108,148 ¥ 48,867 ¥ 19,875 ¥ 80,252 ¥ 410,922 ¥ — ¥ 1,410,410 Accrual 549,274 187,638 106,522 47,235 17,832 75,726 396,334 — 1,380,561 Nonaccrual 2,286 3,148 1,626 1,632 2,043 4,526 14,588 — 29,849 Note: (1) Total loans in the above table do not include loans held for sale, and represent balances without adjustments in relation to unearned income, unamortized premiums and deferred loan fees.
Changes in Allowance for Credit Losses by Portfolio Segment	Changes in the allowance for credit losses by portfolio segment for the fiscal years ended March 31, 2021, 2022 and 2023 are shown below: Fiscal year ended March 31, 2021: Commercial Residential Card MUAH Krungsri Other Total (in millions) Allowance for credit losses: Balance at beginning of fiscal year ¥ 482,275 ¥ 34,746 ¥ 35,180 ¥ 58,995 ¥ 169,626 ¥ 28,718 ¥ 809,540 Effect of adopting new guidance on measurement of credit losses on financial instruments (1) 83,828 49,494 14,262 25,037 118,333 32,750 323,704 Provision for credit losses 235,584 1,385 17,876 90,064 90,167 49,134 484,210 Charge-offs 77,904 2,745 24,564 40,376 93,192 51,725 290,506 Recoveries collected 9,262 13 1,463 4,362 23,415 6,567 45,082 Net charge-offs 68,642 2,732 23,101 36,014 69,777 45,158 245,424 Other (2) 1,532 — — (6,327) (14,953) (3,891) (23,639) Balance at end of fiscal year ¥ 734,577 ¥ 82,893 ¥ 44,217 ¥ 131,755 ¥ 293,396 ¥ 61,553 ¥ 1,348,391 Fiscal year ended March 31, 2022: Commercial Residential Card MUAH Krungsri Other Total (in millions) Allowance for credit losses: Balance at beginning of fiscal year ¥ 734,577 ¥ 82,893 ¥ 44,217 ¥ 131,755 ¥ 293,396 ¥ 61,553 ¥ 1,348,391 Provision for (reversal of) credit losses 236,659 (10,899) 15,473 (101,112) 90,514 47,360 277,995 Charge-offs 57,848 2,121 20,153 19,208 83,474 55,208 238,012 Recoveries collected 11,898 14 1,231 9,532 22,890 13,150 58,715 Net charge-offs 45,950 2,107 18,922 9,676 60,584 42,058 179,297 Other (2) 8,800 — — 9,398 (940) 6,354 23,612 Balance at end of fiscal year ¥ 934,086 ¥ 69,887 ¥ 40,768 ¥ 30,365 ¥ 322,386 ¥ 73,209 ¥ 1,470,701 Fiscal year ended March 31, 2023: Commercial Residential Card Krungsri Other (3) Total (in millions) Allowance for credit losses: Balance at beginning of fiscal year ¥ 934,086 ¥ 69,887 ¥ 40,768 ¥ 322,386 ¥ 103,574 ¥ 1,470,701 Transfer from MUAH to Commercial segment 33,062 (33,062) — Provision for (reversal of) credit losses (113,886) (9,511) 19,236 70,729 41,580 8,148 Charge-offs 158,780 645 18,255 95,489 55,922 329,091 Recoveries collected 18,784 16 720 25,457 24,506 69,483 Net charge-offs 139,996 629 17,535 70,032 31,416 259,608 Other (2) 6,323 — — 34,948 12,386 53,657 Balance at end of fiscal year ¥ 719,589 ¥ 59,747 ¥ 42,469 ¥ 358,031 ¥ 93,062 ¥ 1,272,898 Notes: (1) Effective as of April 1, 2020, the MUFG Group adopted new guidance on measurement of credit losses on financial instruments. (2) Other is principally comprised of gains or losses from foreign exchange translation. (3) For the fiscal year ended March 31, 2023, the beginning balance and the ending balance of the Other segment in the above table includes the allowance for credit losses of ¥30,365 million and ¥3,428 million, respectively, which were previously included in the MUAH segment.

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Mar. 31, 2023
Property, Plant and Equipment [Abstract]
Components of Premises and Equipment	Premises and equipment at March 31, 2022 and 2023 consisted of the following: 2022 2023 (in millions) Land ¥ 372,710 ¥ 393,932 Buildings 766,945 800,821 Equipment and furniture 497,478 509,828 Leasehold improvements 255,679 255,712 Construction in progress 30,894 34,679 Total 1,923,706 1,994,972 Less accumulated depreciation 1,107,877 1,134,394 Premises and equipment-net ¥ 815,829 ¥ 860,578

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Mar. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Movement in Carrying Amount of Goodwill by Business Segment	The table below presents the movement in the carrying amount of goodwill by business segment during the fiscal years ended March 31, 2022 and 2023: Global Corporate & Investment Banking Business Group Global Commercial Banking Business Group Asset Management & Investor Services Business Group Global Markets Business Group Total (in millions) Balance at March 31, 2021: Goodwill ¥ 140,099 ¥ 728,644 ¥ 223,301 ¥ 2,300 ¥ 1,094,344 Accumulated impairment losses (1) (63,393) (645,731) (14,368) — (723,492) 76,706 82,913 208,933 2,300 370,852 Foreign currency translation adjustments and other 4,694 7,358 12,493 — 24,545 Balance at March 31, 2022: Goodwill 144,793 736,002 235,794 2,300 1,118,889 Accumulated impairment losses (63,393) (645,731) (14,368) — (723,492) Less: Goodwill, net of accumulated impairment losses in transferred business of MUFG Union Bank (2) (2,415) (89,371) — — (91,786) ¥ 78,985 ¥ 900 ¥ 221,426 ¥ 2,300 ¥ 303,611 Impairment loss — — (33,553) — (33,553) Foreign currency translation adjustments and other 9,683 (900) 17,931 — 26,714 Balance at March 31, 2023: Goodwill (3) 152,236 481,263 253,725 2,300 889,524 Accumulated impairment losses (3) (63,568) (481,263) (47,921) — (592,752) ¥ 88,668 ¥ — ¥ 205,804 ¥ 2,300 ¥ 296,772 Notes: (1) Effective April 1, 2018, the MUFG Group reorganized its business groups. Goodwill originally recognized for Retail Banking Business Group, Corporate Banking Business Group, Trust Assets Business Group and Global Business Group other than MUAH and Krungsri was ¥1,900,019 million, which has been fully impaired before April 1, 2017. As these impairment losses recorded in past before the reorganization of the segment and are irrelevant to the annual impairment test under the new segment, the accumulated impaired loss is not allocated to new business segments after the reorganization of business group. (2) Represents goodwill, net of accumulated impairment losses in transferred business of MUFG Union Bank, which is included in Other assets in the accompanying consolidated balance sheet at March 31, 2022. (3) For the balance at March 31, 2023, the Goodwill and Accumulated impairment losses of the Global Corporate & Investment Banking Business Group and Global Commercial Banking Business Group in the above table exclude the goodwill and accumulated impairment losses previously recorded for MUFG Union Bank, which was sold during the fiscal year ended March 31, 2023. See Note 2 for further information.
Carrying Amount of Other Intangible Assets by Major Class	The table below presents the gross carrying amount, accumulated amortization and net carrying amount, in total and by major class of other intangible assets at March 31, 2022 and 2023: 2022 2023 Gross carrying amount Accumulated amortization Net carrying amount Gross carrying amount Accumulated amortization Net carrying amount (in millions) Intangible assets subject to amortization: Software ¥ 3,169,332 ¥ 2,380,861 ¥ 788,471 ¥ 3,440,220 ¥ 2,606,923 ¥ 833,297 Customer relationships 528,969 282,324 246,645 552,204 319,293 232,911 Core deposit intangibles 114,059 58,972 55,087 119,555 69,379 50,176 Trade names 76,858 36,846 40,012 79,861 41,090 38,771 Other 15,194 4,859 10,335 17,861 6,751 11,110 Total ¥ 3,904,412 ¥ 2,763,862 1,140,550 ¥ 4,209,701 ¥ 3,043,436 1,166,265 Intangible assets not subject to amortization: Other 8,051 7,958 Total ¥ 1,148,601 ¥ 1,174,223
Estimated Aggregate Amortization Expense for Intangible Assets for Next Five Fiscal Years	The estimated aggregate amortization expense for intangible assets for the next five fiscal years is as follows: (in millions) Fiscal year ending March 31: 2024 ¥ 281,137 2025 236,575 2026 193,844 2027 146,394 2028 111,124

Lease Transactions (Tables)

Lease Transactions (Tables)	12 Months Ended
	Mar. 31, 2023
Leases [Abstract]
Profit or Loss of Lease Transactions as a Lessee	The following table presents profit or loss of lease transactions as a lessee for the fiscal years ended March 31, 2021, 2022 and 2023: 2021 2022 2023 (in millions) Finance lease cost: Amortization of right-of-use assets ¥ 4,971 ¥ 4,816 ¥ 5,672 Interest on lease liabilities 240 198 208 Operating lease cost 91,276 81,206 67,393
Information of Lease Transactions as a Lessee	The following table presents information of lease transactions as a lessee for the fiscal years ended March 31, 2022 and 2023: 2022 2023 (in millions, except years and percentages) Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from finance leases ¥ 262 ¥ 282 Operating cash flows from operating leases 107,047 101,549 Financing cash flows from finance leases 7,426 8,124 Right-of-use assets obtained in exchange for new finance lease liabilities 4,055 11,066 Right-of-use assets obtained in exchange for new operating lease liabilities 48,095 35,678 Weighted-average remaining lease term: Finance leases 3.6 years 3.5 years Operating leases 8.0 years 7.6 years Weighted-average discount rate: Finance leases 0.77 % 0.84 % Operating leases 0.76 % 0.90 %
Maturities of Lease Liabilities as a Leasee	Maturities of lease liabilities as of March 31, 2023 are as follows: Finance leases Operating leases (in millions) 2024 ¥ 7,718 ¥ 85,292 2025 5,539 62,184 2026 2,994 44,667 2027 1,991 30,870 2028 1,004 26,836 2029 and thereafter 642 106,453 Total undiscounted cash flows 19,888 356,302 Difference between undiscounted and discounted cash flows (418) (18,911) Amount on balance sheet ¥ 19,470 ¥ 337,391
Profit or Loss of Lease Transactions as a Lessor	The following table presents profit or loss of lease transactions as a lessor for the fiscal years ended March 31, 2021, 2022 and 2023: 2021 2022 2023 (in millions) Sales type and direct financing leases: Finance income on net investment ¥ 122,810 ¥ 116,430 ¥ 127,724 Operating leases: Lease income 3,663 4,202 6,978 Total ¥ 126,473 ¥ 120,632 ¥ 134,702
Component of Direct Financing Lease Transactions	The following table presents the components of sales type and direct financing leases transactions as of March 31, 2022 and 2023: 2022 2023 (in millions) Lease receivables (undiscounted) ¥ 1,855,125 ¥ 2,046,277 Adjustments: Discounted unguaranteed residual value 12,439 10,278 Initial direct cost on sales type and direct financing leases 27,695 32,780 Deferred selling profit (306,316) (350,553) Net investment in sales type and direct financing leases ¥ 1,588,943 ¥ 1,738,782
Maturity of the Lease Payment Receivables of Direct Financing Lease Transactions	The following table presents maturity of the lease payment receivables of sales type and direct financing lease transactions as of March 31, 2023: Lease receivables (in millions) 2024 ¥ 507,241 2025 466,812 2026 387,246 2027 274,201 2028 205,295 2029 and thereafter 205,482 Total undiscounted cash flows 2,046,277 Difference between undiscounted cash flows and the lease receivables recognized on balance sheet (307,495) Amount on balance sheet ¥ 1,738,782

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Mar. 31, 2023
Income Tax Disclosure [Abstract]
Income before Income Tax Expense by Jurisdiction	Income (loss) before income tax expense (benefit) by jurisdiction for the fiscal years ended March 31, 2021, 2022 and 2023 was as follows: 2021 2022 2023 (in millions) Domestic income (loss) ¥ 575,101 ¥ (886,921) ¥ (588,227) Foreign income 1,033,241 828,194 1,244,961 Total ¥ 1,608,342 ¥ (58,727) ¥ 656,734
Details of Current and Deferred Income Tax Expense (Benefit)	The detail of current and deferred income tax expense (benefit) for the fiscal years ended March 31, 2021, 2022 and 2023 was as follows: 2021 2022 2023 (in millions) Current: Domestic ¥ 95,183 ¥ 243,993 ¥ 250,780 Foreign 83,492 112,164 203,409 Total 178,675 356,157 454,189 Deferred: Domestic 310,490 (308,214) (348,997) Foreign (44,217) (62,454) (78,779) Total 266,273 (370,668) (427,776) Income tax expense (benefit) 444,948 (14,511) 26,413 Income tax expense (benefit) reported in Accumulated OCI relating to: Investment securities 1,146 (87,628) (66,401) Debt valuation adjustments (36,792) 10,296 7,858 Derivatives qualifying for cash flow hedges 12,244 (4,968) 1,594 Defined benefit plans 139,883 19,039 (677) Foreign currency translation adjustments (3,368) 96,742 86,576 Total 113,113 33,481 28,950 Total ¥ 558,061 ¥ 18,970 ¥ 55,363 Prior to the fiscal year ended March 31, 2023, the MUFG Group filed tax returns on a consolidated basis for corporate income taxes within Japan, and from the beginning of fiscal year ended March 31, 2023, the MUFG Group applied the Group Tax Sharing System, where the calculation of taxable income or loss is still made based upon the combined profits or losses of the parent company and its wholly-owned domestic subsidiaries, but the tax payments are made by each of these companies.
Reconciliation of Effective Income Tax Rate	A reconciliation of the effective income tax rates reflected in the accompanying consolidated statements of operations to the combined normal effective statutory tax rates for the fiscal years ended March 31, 2021, 2022 and 2023 is as follows: 2021 2022 2023 Combined normal effective statutory tax rate 30.6 % 30.6 % 30.6 % Nondeductible expenses 0.3 (12.0) 0.8 Impairment of goodwill 2.4 — 1.5 Foreign tax credit and payments (0.9) 28.7 (4.7) Lower tax rates applicable to income of subsidiaries (1.0) 30.8 (5.3) Change in valuation allowance (0.9) (90.1) (10.5) Taxation for gain on sale of shares in subsidiary — — 3.4 (1) Nontaxable dividends received (1.9) 85.1 (14.8) Undistributed earnings of subsidiaries — (25.6) (0.3) Tax and interest expense for uncertainty in income taxes (0.1) (10.8) — Noncontrolling interest income 0.1 (0.7) 0.3 Effect of changes in tax laws (0.1) (2.4) 0.6 Expiration of loss carryforward 0.1 (7.0) 0.1 Other—net (0.9) (1.9) 2.3 Effective income tax rate 27.7 % 24.7 % 4.0 % Note: (1) In March 2023, MUAH repurchased a portion of the shares in MUAH held by MUFG and MUFG Bank. The transaction resulted in the realization of a difference between the book value of the shares in MUAH for accounting and tax purposes, resulting in a ¥22,250 million increase in income tax expense and a 3.4 percentage points increase in the effective tax rate for the fiscal year ended March 31, 2023.
Components of Net Deferred Tax Assets	The tax effects of the items comprising the MUFG Group’s net deferred tax assets at March 31, 2022 and 2023 were as follows: 2022 2023 (in millions) Deferred tax assets: Allowance for credit losses ¥ 462,303 ¥ 418,732 Operating loss carryforwards 99,566 99,870 Loans 37 561 Accrued liabilities and other 309,017 413,587 Premises and equipment 124,419 119,395 Derivative financial instruments 154,237 303,644 Obligations under operating leases 106,864 88,088 Valuation allowance (184,932) (153,053) Total deferred tax assets 1,071,511 1,290,824 2022 2023 (in millions) Deferred tax liabilities: Investment securities (including trading account assets at fair value under the fair value option) 605,443 379,581 Intangible assets 69,276 65,973 Lease transactions 47,432 12,514 Defined benefit plans 102,998 50,730 Investments in subsidiaries and affiliates 506,829 639,592 Right-of-use assets of operating leases 77,274 64,741 Other 113,335 103,915 Total deferred tax liabilities 1,522,587 1,317,046 Net deferred tax liabilities ¥ (451,076) ¥ (26,222)
Operating Loss Carryforwards and Tax Credit Carryforwards	Such carryforwards, if not utilized, are scheduled to expire as follows: Operating loss carryforwards Tax credit carryforwards (in millions) Fiscal year ending March 31: 2024 ¥ 5,344 ¥ 649 2025 84,378 146 2026 53,457 145 2027 624 143 2028 3,108 143 2029 636 347 2030 and thereafter 35,173 46,957 No definite expiration date 38,889 8,554 Total ¥ 221,609 ¥ 57,084
Roll-forward of Unrecognized Tax Benefits	The following is a roll-forward of the MUFG Group’s unrecognized tax benefits for the fiscal years ended March 31, 2021, 2022 and 2023: 2021 2022 2023 (in millions) Balance at beginning of fiscal year ¥ 19,249 ¥ 13,829 ¥ 21,794 Gross amount of increases for current year’s tax positions 202 28 451 Gross amount of decreases for current year’s tax positions (1,919) — — Gross amount of increases for prior years’ tax positions 489 6,320 279 Gross amount of decreases for prior years’ tax positions (2,329) (183) (166) Decreases due to lapse of applicable statutes of limitations (116) (8) (116) Foreign exchange translation and other (1,747) 1,808 3,158 Balance at end of fiscal year ¥ 13,829 ¥ 21,794 ¥ 25,400
Roll-forward of Interest and Penalties Recognized	The following is a roll-forward of the interest and penalties recognized in the accompanying consolidated financial statements for the fiscal years ended March 31, 2021, 2022 and 2023: 2021 2022 2023 (in millions) Balance at beginning of fiscal year ¥ 2,612 ¥ 2,417 ¥ 2,848 Total interest and penalties in the consolidated statements of operations (398) 156 (1,052) Total cash settlements, foreign exchange translation and other 203 275 371 Balance at end of fiscal year ¥ 2,417 ¥ 2,848 ¥ 2,167
Status of Years under Audit or Open to Examination by Major Tax Jurisdictions	The following are the major tax jurisdictions in which the MUFG Group operates and the status of years under audit or open to examination: Jurisdiction Tax years Japan 2022 and forward United States—Federal 2019 and forward United States—California 2015 and forward Indonesia 2018 and forward

Pledged Assets and Collateral (

Pledged Assets and Collateral (Tables)	12 Months Ended
	Mar. 31, 2023
Financial Instruments Pledged as Collateral [Abstract]
Assets Mortgaged Pledged or Otherwise Subject to Lien	At March 31, 2023, assets mortgaged, pledged, or otherwise subject to lien were as follows: 2023 (in millions) Trading account securities ¥ 12,699,080 Investment securities 25,666,561 Loans 11,950,542 Other 20,368 Total ¥ 50,336,551
Pledged Assets Classified by Type of Liabilities	The above pledged assets were classified by type of liabilities to which they related as follows: 2023 (in millions) Deposits ¥ 14,985 Payables under repurchase agreements and securities lending transactions 27,968,380 Other short-term borrowings and long-term debt 22,280,877 Other 72,309 Total ¥ 50,336,551

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Mar. 31, 2023
Deposits [Abstract]
Time Deposits by Maturity	The maturity information at March 31, 2023 for domestic and foreign time deposits, including CDs, is summarized as follows: Domestic Foreign (in millions) Due in one year or less ¥ 31,966,328 ¥ 29,492,912 Due after one year through two years 4,400,809 504,083 Due after two years through three years 2,327,682 170,605 Due after three years through four years 454,931 99,234 Due after four years through five years 448,420 40,959 Due after five years 706,729 32,825 Total ¥ 40,304,899 ¥ 30,340,618

Call Money and Funds Purchased

Call Money and Funds Purchased (Tables)	12 Months Ended
	Mar. 31, 2023
Call Money And Funds Purchased [Abstract]
Summary of Funds Transactions	A summary of funds transactions for the fiscal years ended March 31, 2022 and 2023 is as follows: 2022 2023 (in millions, except percentages and days) Outstanding at end of fiscal year: Amount ¥ 2,416,313 ¥ 3,437,614 Principal range of maturities 1 day to 30 days 1 day to 30 days Weighted average interest rate 0.06 % 0.01 %

Due to Trust Account, Short-t_2

Due to Trust Account, Short-term Borrowings and Long-term Debt (Tables)	12 Months Ended
	Mar. 31, 2023
Debt Disclosure [Abstract]
Summary of Due to Trust Account Transactions	A summary of due to trust account transactions at March 31, 2022 and 2023 is as follows: 2022 2023 (in millions, except percentages) Amount outstanding at end of fiscal year ¥ 6,307,463 ¥ 5,871,244 Weighted average interest rate on outstanding balance at end of fiscal year 0.00 % 0.00 %
Components of Other Short-term Borrowings	Other short-term borrowings at March 31, 2022 and 2023 were comprised of the following: 2022 2023 (in millions, except percentages) Domestic offices: Commercial paper ¥ 1,491,509 ¥ 1,123,528 Borrowings from the Bank of Japan 10,231,483 1,186,251 Borrowings from other financial institutions 68,384 95,785 Other (1) 810,849 976,832 Total domestic offices 12,602,225 3,382,396 Foreign offices: Commercial paper 3,776,737 4,771,323 Borrowings from other financial institutions 82,914 160,292 Short-term debentures 22,059 21,338 Other 59,287 105,501 Total foreign offices 3,940,997 5,058,454 Total 16,543,222 8,440,850 Less unamortized discount 85 2,836 Other short-term borrowings—net ¥ 16,543,137 ¥ 8,438,014 Weighted average interest rate on outstanding balance at end of fiscal year 0.09 % 2.83 % Note: (1) Includes borrowings from the jointly operated designated money in trusts.
Components of Long-term Debt	Long-term debt (with original maturities of more than one year) at March 31, 2022 and 2023 was comprised of the following: 2022 2023 (in millions) MUFG: Obligations under finance leases ¥ 3,326 ¥ 1,720 Unsubordinated debt (1) : Fixed rate bonds, payable in US dollars, due 2023-2039, principally 0.85%-5.72% 5,501,311 7,226,689 Fixed rate bonds, payable in Euro, due 2023-2033, principally 0.34%-3.56% 508,524 578,508 Fixed rate bonds, payable in other currencies, due 2024-2029, principally 2.08%-4.05% (2) 37,424 37,425 Adjustable rate bonds, payable in Japanese yen, due 2024-2034, principally 0.14%-1.47% 95,900 451,500 Adjustable rate bonds, payable in Euro, due 2025-2027, principally 0.34%-3.27% 68,350 408,016 Adjustable rate borrowings, payable in Japanese yen, due 2025-2037, principally 0.76%-1.86% — 272,000 Floating rate bonds, payable in US dollars, due 2023-2026, principally 5.53%-6.16% 416,171 400,487 Floating rate bonds, payable in Euro, due 2023, principally 3.25% 47,845 51,002 Floating rate bonds, payable in other currencies, due 2024, principally 4.52% (2) 36,800 35,876 Total 6,712,325 9,461,503 Subordinated debt (1) : Fixed rate bonds, payable in Japanese yen, due 2024-2033, principally 0.37%-1.56% 771,014 872,810 Fixed rate borrowings, payable in Japanese yen, due 2025-2028, principally 0.57%-0.79% — 86,000 Adjustable rate bonds, payable in Japanese yen, due 2028-2033, principally 0.29%-1.21% 905,925 908,541 Adjustable rate bonds, payable in Japanese yen, no stated maturity, principally 0.82%-2.50% 1,486,734 1,366,633 Adjustable rate borrowings, payable in Japanese yen, due 2029-2032, principally 0.30%-0.72% 31,500 34,000 Adjustable rate borrowings, payable in Japanese yen, no stated maturity, principally 0.85%-1.33% 86,725 94,856 Floating rate borrowings, payable in Japanese yen, due 2025-2028, principally 0.57%-0.79% 86,000 — Total 3,367,898 3,362,840 Total 10,083,549 12,826,063 MUFG Bank: Obligations under finance leases ¥ 4,419 ¥ 4,652 Unsubordinated debt (1) : Fixed rate bonds, payable in Japanese yen, due 2023-2027, principally 0.63%-2.34% 72,400 37,300 Fixed rate bonds, payable in US dollars, due 2023-2052, principally 0.00%-4.70% 1,052,443 1,073,796 Fixed rate bonds, payable in Euro, due 2033, principally 1.81% 6,152 6,557 Fixed rate borrowings, payable in Japanese yen, due 2023-2028, principally 0.00%-0.25% 18,582,830 20,582,218 Fixed rate borrowings, payable in US dollars, due 2030, principally 2.93% 8,371 7,601 Adjustable rate borrowings, payable in US dollars, due 2023, principally 5.14%-5.54% — 86,127 Floating rate borrowings, payable in US dollars, due 2023-2031, principally 4.49%-8.76% 714,718 671,936 Floating rate borrowings, payable in Euro, due 2025-2036, principally 2.30%-3.39% 103,231 100,065 Total 20,540,145 22,565,600 Subordinated debt (1) : Fixed rate bonds, payable in Japanese yen, due 2025-2031, principally 1.95%-2.91% 236,000 175,500 Fixed rate borrowings, payable in Japanese yen, due 2023-2035, principally 0.44%-2.24% 71,000 59,500 Adjustable rate borrowings, payable in Japanese yen, due 2028, principally 1.06% 10,000 10,000 Floating rate borrowings, payable in Japanese yen, due 2027, principally 0.27% 15,000 15,000 Total 332,000 260,000 Obligations under loan securitization transaction accounted for as secured borrowings due 2023-2080, principally 0.13%-10.00% 519,718 445,821 Total 21,396,282 23,276,073 2022 2023 (in millions) Other subsidiaries: Obligations under finance leases ¥ 8,359 ¥ 13,098 Unsubordinated debt (1) : Fixed rate borrowings, bonds and notes, payable in Japanese yen, due 2023-2051, principally 0.00%-23.00% 1,088,884 1,012,649 Fixed rate borrowings, bonds and notes, payable in US dollars, due 2023-2036, principally 0.00%-50.00% 124,841 95,593 Fixed rate borrowings, bonds and notes, payable in Euro, due 2024-2030, principally 0.00% 10,796 1,148 Fixed rate borrowings, bonds and notes, payable in Thai baht, due 2023-2028, principally 0.00%-6.90% 230,630 154,698 Fixed rate borrowings, bonds and notes, payable in other currencies, due 2023-2037, principally 0.00%-9.50% (2) 306,778 322,457 Floating/Adjustable rate borrowings, bonds and notes, payable in Japanese yen, due 2023-2053, principally 0.00%-38.50% 1,000,691 1,009,268 Floating/Adjustable rate borrowings, bonds and notes, payable in US dollars, due 2023-2032, principally 0.00%-43.00% 130,597 103,125 Adjustable rate bonds and notes, payable in Euro, due 2024-2025, principally 0.10%-1.00% 230 193 Total 2,893,447 2,699,131 Subordinated debt (1) : Fixed rate borrowings, bonds and notes, payable in Japanese yen, due 2023-2030, principally 1.53%-2.61% 114,946 34,700 Fixed rate bonds and notes, payable in US dollars, due 2027-2030, principally 7.50%-8.00% 2,262 2,329 Fixed rate bonds and notes, payable in Thai baht, due 2029-2032, principally 3.00%-4.30% 208,581 231,138 Floating rate bonds and notes, payable in US dollars, due 2028, principally 9.86% 2,866 5,253 Total 328,655 273,420 Obligations under loan securitization transaction accounted for as secured borrowings due 2022, principally 2.25% 1 — Total 3,230,462 2,985,649 Total 34,710,293 39,087,785 Debt issuance cost ¥ (13,694) ¥ (16,030) Total ¥ 34,696,599 ¥ 39,071,755 Notes: (1) Adjustable rate debts are debts where interest rates are reset in accordance with the terms of the debt agreements, and floating rate debts are debts where interest rates are repriced in accordance with movements of markets indices.
Summary of Subsequent Maturities of Long-term Debt	The following is a summary of maturities of long-term debt subsequent to March 31, 2023 : MUFG BK Other subsidiaries Total (in millions) Fiscal year ending March 31: 2024 ¥ 899,334 ¥ 1,239,768 ¥ 691,145 ¥ 2,830,247 2025 1,331,578 18,187,331 494,856 20,013,765 2026 2,267,854 1,245,954 317,642 3,831,450 2027 580,729 164,253 258,031 1,003,013 2028 1,346,562 1,167,991 101,229 2,615,782 2029 and thereafter 6,400,006 1,270,776 1,122,746 8,793,528 Total ¥ 12,826,063 ¥ 23,276,073 ¥ 2,985,649 ¥ 39,087,785

Severance Indemnities and Pen_2

Severance Indemnities and Pension Plans (Tables)	12 Months Ended
	Mar. 31, 2023
Retirement Benefits [Abstract]
Components of Net Periodic Benefit Cost of Pension Benefits, SIPs and Other Benefits	Net periodic cost of pension benefits and other benefits for the fiscal years ended March 31, 2021, 2022 and 2023 include the following components: Domestic subsidiaries Foreign offices and subsidiaries 2021 2022 2023 2021 2022 2023 Pension benefits and SIP Pension benefits and SIP Pension benefits and SIP Pension benefits Other benefits Pension benefits Other benefits Pension benefits Other benefits (in millions) Service cost—benefits earned during the fiscal year ¥ 46,861 ¥ 44,160 ¥ 41,026 ¥ 13,947 ¥ 229 ¥ 16,853 ¥ 140 ¥ 16,808 ¥ 97 Interest cost on projected benefit obligation 11,091 11,995 14,356 14,295 793 11,233 494 20,573 1,002 Expected return on plan assets (71,078) (81,902) (84,084) (31,161) (2,118) (33,269) (2,415) (44,590) (3,200) Amortization of net actuarial loss (gain) 17,019 770 1,446 11,560 208 16,573 (64) 7,534 155 Amortization of prior service cost (1,205) (1,280) (1,396) (2,614) (448) (2,802) (385) (3,124) (432) Loss (gain) on settlements and curtailment (4,605) (5,820) (4,860) 30 — 44 — 84,345 (1) — Net periodic benefit cost (income) ¥ (1,917) ¥ (32,077) ¥ (33,512) ¥ 6,057 ¥ (1,336) ¥ 8,632 ¥ (2,230) ¥ 81,546 ¥ (2,378) Note: (1) One-time write off of unrecognized retirement benefit obligations of ¥84,345 million was recorded in connection with a pension buyout transaction to transfer portions of the defined benefit pension plans of MUFG Bank’s overseas branches.
Summary of Assumptions Used in Computation	The following table summarizes the assumptions used in computing the present value of the projected benefit obligations and the net periodic benefit cost: Domestic subsidiaries Foreign offices and subsidiaries 2021 2022 2023 2021 2022 2023 Pension benefits and SIP Pension benefits and SIP Pension benefits and SIP Pension benefits Other benefits Pension benefits Other benefits Pension benefits Other benefits (in millions) Weighted-average assumptions used: Discount rates in determining expense 0.63 % 0.71 % 0.86 % 2.94 % 2.72 % 2.19 % 1.82 % 2.51 % 2.21 % Discount rates in determining benefit obligation 0.71 0.86 1.36 2.34 2.23 2.78 2.63 4.76 4.68 Rates of increase in future compensation level for determining expense 3.46 3.46 3.46 5.12 — 5.09 — 5.04 — Rates of increase in future compensation level for determining benefit obligation 3.46 3.46 3.47 5.09 — 5.04 — 5.09 — Expected rates of return on plan assets 2.93 2.89 2.93 6.19 7.00 5.91 7.00 4.86 5.50 Cash balance crediting rate for determining expense 2.46 2.46 2.46 2.39 — 1.62 — 1.94 — Cash balance crediting rate for determining benefit obligation 2.46 2.46 2.46 1.62 — 1.94 — 3.72 —
Assumed Health Care Cost Trend Rates and Effect of a One-percentage-point Change for Foreign Offices and Subsidiaries	The following tables present the assumed health care cost trend rates for foreign offices and subsidiaries, which are used to measure the expected cost of benefits for the next year: MUAH Other than MUAH 2022 (1) 2023 2022 (1) 2023 (1) Initial trend rate 4.13 % — 6.50 % 7.00 % Ultimate trend rate 3.77 % — 4.50 % 4.50 % Year the rate reaches the ultimate trend rate 2029 — 2029 2031 Note:
Combined Funded Status and Amounts Recognized in Consolidated Balance Sheets	The following table sets forth the combined funded status and amounts recognized in the accompanying consolidated balance sheets at March 31, 2022 and 2023: Domestic subsidiaries Foreign offices and subsidiaries 2022 2023 2022 2023 Non-contributory pension benefits and SIP Non-contributory pension benefits and SIP Pension benefits Other benefits Pension benefits Other benefits (in millions) Change in benefit obligation: Benefit obligation at beginning of fiscal year ¥ 1,753,483 ¥ 1,692,105 ¥ 580,953 ¥ 31,354 ¥ 619,739 ¥ 30,791 Service cost 44,160 41,026 16,853 140 16,808 97 Interest cost 11,995 14,356 11,233 494 20,573 1,002 Plan participants’ contributions — — — 433 — 689 Acquisitions/ Divestitures (242) (584) (130) — (77,231) (3,818) Amendments (1,054) — 402 — (1,250) — Actuarial loss (gain) (28,814) (113,554) (24,611) (1) (2,269) (98,693) (1) (5,329) Benefits paid (65,853) (65,897) (24,501) (2,580) (33,456) (3,785) Lump-sum payment (21,570) (20,179) (3,591) — (4,476) — Translation adjustments and other — — 63,131 3,219 (247,171) (2) 4,548 Benefit obligation at end of fiscal year 1,692,105 1,547,273 619,739 30,791 194,843 24,195 Change in plan assets: Fair value of plan assets at beginning of fiscal year 2,858,013 2,890,503 604,404 33,349 705,864 39,528 Actual return on plan assets 77,848 (76,526) 49,277 4,619 (126,085) (6,722) Employer contributions 20,487 26,734 4,627 (116) 1,277 (8,104) Acquisitions/ Divestitures 8 (242) — — (100,438) (5,649) Plan participants’ contributions — — — 433 — 689 Benefits paid (65,853) (65,897) (24,501) (2,580) (33,456) (3,785) Translation adjustments and other — — 72,057 3,823 (231,343) (2) 6,240 Fair value of plan assets at end of fiscal year 2,890,503 2,774,572 705,864 39,528 215,819 22,197 Amounts recognized in the consolidated balance sheets: Prepaid benefit cost ¥ 1,216,703 ¥ 1,245,150 ¥ 153,861 ¥ 12,104 ¥ 89,109 ¥ 1,110 Accrued benefit cost (18,305) (17,851) (67,736) (3,367) (68,133) (3,108) Net amount recognized ¥ 1,198,398 ¥ 1,227,299 ¥ 86,125 ¥ 8,737 ¥ 20,976 ¥ (1,998) Notes: (1) Significant gains and losses related to changes in the benefit obligation for the fiscal years ended March 31, 2022 and 2023 primarily result from changes in the discount rate. (2) In connection with a pension buyout transaction, portions of the defined benefit pension plans of MUFG Bank’s overseas branches were transferred. The related obligations and assets were ¥327,203 million and ¥327,203 million, respectively.
Aggregated Accumulated Benefit Obligations	The aggregated accumulated benefit obligations of these plans at March 31, 2022 and 2023 were as follows: Domestic subsidiaries Foreign offices and subsidiaries 2022 2023 2022 2023 (in millions) Aggregated accumulated benefit obligations ¥ 1,663,543 ¥ 1,521,419 ¥ 596,153 ¥ 170,917
Summary for Plans with Accumulated Benefit Obligations in Excess of Plan Assets	The projected benefit obligations, accumulated benefit obligations and fair value of plan assets for the plans with accumulated benefit obligations in excess of plan assets at March 31, 2022 and 2023 were as follows: Domestic subsidiaries Foreign offices and subsidiaries 2022 2023 2022 2023 (in millions) Projected benefit obligations ¥ 25,327 ¥ 24,918 ¥ 87,876 ¥ 81,128 Accumulated benefit obligations 25,327 24,918 67,612 62,308 Fair value of plan assets 7,223 7,315 20,139 12,995
Amounts Recognized in Accumulated OCI	The following table presents the amounts recognized in Accumulated OCI of the MUFG Group at March 31, 2022 and 2023: Domestic subsidiaries Foreign offices and subsidiaries 2022 2023 2022 2023 Pension benefits and SIP Pension benefits and SIP Pension benefits Other benefits Pension benefits Other benefits (in millions) Net actuarial loss (gain) ¥ (18,183) ¥ 32,257 ¥ 47,093 ¥ (1,070) ¥ 21,347 ¥ 2,729 Prior service cost (2,845) (1,449) (3,742) (1,650) (1,747) (1,375) Gross amount recognized in Accumulated OCI (21,028) 30,808 43,351 (2,720) 19,600 1,354 Taxes (36,389) (52,367) (12,092) 616 (6,135) (736) Net amount recognized in Accumulated OCI ¥ (57,417) ¥ (21,559) ¥ 31,259 ¥ (2,104) ¥ 13,465 ¥ 618
Amounts Recognized in OCI	The following table presents OCI for the fiscal years ended March 31, 2022 and 2023: Domestic subsidiaries Foreign offices and subsidiaries 2022 2023 2022 2023 Pension benefits and SIP Pension benefits and SIP Pension benefits Other benefits Pension benefits Other benefits (in millions) Net actuarial loss (gain) arising during the year ¥ (24,790) ¥ 47,026 ¥ (40,559) ¥ (4,471) ¥ 59,505 ¥ 4,129 Prior service cost arising during the year (1,053) — 402 55 (597) — Losses (gains) due to amortization: Net actuarial loss (gain) (770) (1,446) (16,573) 64 (7,534) (155) Prior service cost 1,280 1,396 2,802 385 3,124 432 Curtailment and settlement 5,820 4,860 (44) — (84,345) (1) — Foreign currency translation adjustments — — 6,683 (139) 6,096 (332) Total changes in Accumulated OCI ¥ (19,513) ¥ 51,836 ¥ (47,289) ¥ (4,106) ¥ (23,751) ¥ 4,074 Note: (1) One-time write off of unrecognized retirement benefit obligations of ¥84,345 million was recorded in connection with a pension buyout transaction to transfer portions of the defined benefit pension plans of MUFG Bank’s overseas branches.
Weighted-average Target Asset Allocation of Plan Assets for Pension Benefits and Other Benefits	The weighted-average target asset allocation of plan assets for the pension benefits and other benefits at March 31, 2023 was as follows: Domestic subsidiaries Foreign offices and subsidiaries Asset category Pension benefits and SIP Pension benefits Other benefits Japanese equity securities 34.2 % — % — % Japanese debt securities 27.6 — — Non-Japanese equity securities 13.8 16.3 30.0 Non-Japanese debt securities 18.1 64.8 64.0 Real estate 1.3 3.6 6.0 Short-term assets and other 5.0 15.3 — Total 100.0 % 100.0 % 100.0 %
Estimated Future Benefit Payments	The following table presents benefit payments expected to be paid, which include the effect of expected future service for the fiscal years indicated: Domestic subsidiaries Foreign offices and subsidiaries Pension benefits and SIP Pension benefits Other benefits (in millions) Fiscal year ending March 31: 2024 ¥ 80,489 ¥ 14,370 ¥ 2,364 2025 79,347 10,311 2,252 2026 78,884 11,562 2,138 2027 77,514 13,474 2,014 2028 77,892 14,440 1,874 Thereafter (2029-2033) 372,835 97,390 7,868
Fair Value of Each Major Category of Plan Assets	The following table presents the fair value of each major category of plan assets as of March 31, 2022 and 2023: Pension benefits and SIP Investments: At March 31, 2022 Domestic subsidiaries Foreign offices and subsidiaries Assets category Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total (in millions) Japanese government bonds ¥ 140,538 ¥ — ¥ — ¥ 140,538 ¥ — ¥ — ¥ — ¥ — Non-Japanese government bonds — — — — 68,887 5,385 — 74,272 Other debt securities 9,950 14,648 232 24,830 — 133,815 — 133,815 Japanese marketable equity securities 848,482 — — 848,482 — — — — Non-Japanese marketable equity securities 87,983 176 — 88,159 34,659 556 — 35,215 Other investment funds — — — — 83,442 186,372 — 269,814 (2) Japanese general account of life insurance companies (1) — 209,482 — 209,482 — — — — Other investments 11,819 17,563 — 29,382 1,001 11,095 39,729 51,825 Total ¥ 1,098,772 ¥ 241,869 ¥ 232 ¥ 1,340,873 ¥ 187,989 ¥ 337,223 ¥ 39,729 ¥ 564,941 At March 31, 2023 Domestic subsidiaries Foreign offices and subsidiaries Assets category Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total (in millions) Japanese government bonds ¥ 133,664 ¥ — ¥ — ¥ 133,664 ¥ — ¥ — ¥ — ¥ — Non-Japanese government bonds — — — — 2,632 2,339 — 4,971 Other debt securities 2,793 6,251 40 9,084 — 15,749 — 15,749 Japanese marketable equity securities 809,371 — — 809,371 — — — — Non-Japanese marketable equity securities 78,840 165 — 79,005 3 — — 3 Other investment funds — — — — 38 59,023 — 59,061 Japanese general account of life insurance companies (1) — 205,117 — 205,117 — — — — Other investments 19,644 4,677 — 24,321 2,937 1,869 25,362 30,168 Total ¥ 1,044,312 ¥ 216,210 ¥ 40 ¥ 1,260,562 ¥ 5,610 ¥ 78,980 ¥ 25,362 ¥ 109,952 Notes: (1) “Japanese general accounts of life insurance companies” is a contract with life insurance companies that guarantees a return of approximately 1.25% from April 1, 2021 to March 31, 2022 and 1.25% from April 1, 2022 to March 31, 2023. (2) Other investment funds of the foreign offices and subsidiaries include mutual funds and common collective funds of ¥86,724 million and ¥146,169 million, respectively, which were held by MUFG Americas Holdings at December 31, 2021.
Fair Values of Certain Investments Valued at Net Asset per Share (or Its Equivalent)	The following table presents fair values of certain investments valued at net asset value per share (or its equivalent) as a practical expedient that were excluded from the above table as of March 31, 2022 and 2023: Domestic subsidiaries Foreign offices and subsidiaries Assets category 2022 2023 2022 2023 (in millions) Japanese pooled funds: Japanese marketable equity securities ¥ 104,793 ¥ 71,753 ¥ — ¥ — Japanese debt securities 221,250 120,108 — — Non-Japanese marketable equity securities 219,018 186,555 — — Non-Japanese debt securities 249,274 332,691 — — Other 92,558 76,892 — — Total pooled funds 886,893 787,999 — — Other investment funds 662,737 (1) 726,011 (1) 140,923 (2) 105,867 (2) Total ¥ 1,549,630 ¥ 1,514,010 ¥ 140,923 ¥ 105,867 Notes: (1) Other investment funds of the domestic subsidiaries include mutual funds and real estate funds of ¥625,237 million and ¥15,417 million, respectively, at March 31, 2022 and ¥690,781 million and ¥12,351 million, respectively, at March 31, 2023.

Other Assets and Liabilities (T

Other Assets and Liabilities (Tables)	12 Months Ended
	Mar. 31, 2023
Other Assets And Liabilities [Abstract]
Major Components of Other Assets and Liabilities	Major components of other assets and liabilities at March 31, 2022 and 2023 were as follows: 2022 2023 (in millions) Other assets: Accounts receivable: Receivables from brokers, dealers and customers for securities transactions ¥ 644,443 ¥ 754,483 Other (1) 1,187,311 1,794,983 Investments in equity method investees 3,066,738 3,482,292 Prepaid benefit cost (Note 13) 1,356,603 1,335,369 Cash collateral pledged for derivative transactions (Note 9) 2,893,178 2,585,837 Cash collateral for the use of Bank of Japan’s settlement infrastructure 933,000 933,000 Accrued interest 246,271 500,506 Deferred tax assets (Note 8) 79,191 182,388 Right-of-use assets of operating leases (Note 7) 261,803 227,112 Assets held for sale relating to transferred business of MUFG Union Bank (Note 2) 11,621,567 — Other 4,421,979 5,659,034 Total ¥ 26,712,084 ¥ 17,455,004 Other liabilities: Accounts payable: Payables to brokers, dealers and customers for securities transactions ¥ 1,970,158 ¥ 2,062,782 Other 1,311,035 1,920,945 Obligations to return securities received as collateral (Notes 15, 16 and 31) 6,826,215 6,891,545 Accrued interest 98,183 385,921 Deferred tax liabilities (Note 8) 530,267 208,610 Allowance for off-balance sheet credit instruments 126,055 143,770 Accrued benefit cost (Note 13) 89,062 89,092 Guarantees and indemnifications 45,358 54,359 Cash collateral received for derivative transactions (Note 9) 1,017,580 1,318,338 Obligations under operating leases (Note 7) 384,183 337,391 Liabilities held for sale relating to transferred business of MUFG Union Bank (Note 2) 11,157,660 — Accrued and other liabilities 3,106,706 3,934,453 Total ¥ 26,662,462 ¥ 17,347,206 Note:
Summarized Financial Information	Summarized financial information of Morgan Stanley, the largest portion of the MUFG Group’s equity method investees, as of March 31, 2022 and 2023, and for each of the three years ended March 31, 2023 is as follows: 2022 2023 (in billions) Trading assets ¥ 36,335 ¥ 42,770 Securities purchased under agreements to resell 15,637 16,275 Securities borrowed 18,480 19,524 Total assets 149,589 160,223 Deposits 44,163 46,405 Customer and other payables 29,815 29,470 Borrowings 28,127 33,407 Total liabilities 136,851 146,609 Noncontrolling interests 144 151 2021 2022 2023 (in billions) Net revenues ¥ 5,841 ¥ 6,655 ¥ 7,235 Total non-interest expenses 3,932 4,498 5,376 Income from continuing operations before income taxes 1,881 2,139 1,797 Net income applicable to Morgan Stanley 1,433 1,650 1,402 Summarized financial information of the MUFG Group’s equity method investees, other than Morgan Stanley as of March 31, 2022 and 2023, and for each of the three years ended March 31, 2023 is as follows: 2022 2023 (in billions) Net loans ¥ 17,107 ¥ 18,114 Total assets 32,992 35,208 Deposits 11,291 11,963 Total liabilities 27,255 29,123 Noncontrolling interests 93 77 2021 2022 2023 (in billions) Total interest income ¥ 1,058 ¥ 1,119 ¥ 1,430 Total interest expense 375 335 519 Net interest income 683 784 911 Provision for credit losses 215 207 245 Income before income tax expense 476 582 616 Net income 400 488 498

Offsetting of Derivatives, Re_2

Offsetting of Derivatives, Repurchase Agreements, and Securities Lending Transactions (Tables)	12 Months Ended
	Mar. 31, 2023
Offsetting [Abstract]
Offsetting Assets	For certain transactions where a legal opinion with respect to the enforceability of netting has not been sought or obtained, the related amounts are not subject to enforceable master netting agreements and not included in “Gross amounts not offset in the consolidated balance sheet” column in the tabular disclosure below. At March 31, 2022: Gross amounts of recognized assets/liabilities Gross amounts offset in the consolidated balance sheet Net amounts presented in the consolidated balance sheet (1) Gross amounts not offset in the consolidated balance sheet Net amounts Financial instruments Cash collateral received/pledged (in billions) Financial assets: Derivative assets ¥ 10,611 ¥ — ¥ 10,611 ¥ (7,032) ¥ (620) ¥ 2,959 Receivables under resale agreements 14,527 (2,024) 12,503 (11,614) (29) 860 Receivables under securities borrowing transactions 4,571 (75) 4,496 (4,367) — 129 Total ¥ 29,709 ¥ (2,099) ¥ 27,610 ¥ (23,013) ¥ (649) ¥ 3,948 Financial liabilities: Derivative liabilities ¥ 10,948 ¥ — ¥ 10,948 ¥ (6,749) ¥ (2,225) ¥ 1,974 Payables under repurchase agreements 29,717 (1,991) 27,726 (26,115) (85) 1,526 Payables under securities lending transactions 1,097 (75) 1,022 (990) (5) 27 Obligations to return securities received as collateral 6,826 — 6,826 (1,864) — 4,962 Total ¥ 48,588 ¥ (2,066) ¥ 46,522 ¥ (35,718) ¥ (2,315) ¥ 8,489 At March 31, 2023: Gross amounts of recognized assets/liabilities Gross amounts offset in the consolidated balance sheet Net amounts Gross amounts not offset in the consolidated balance sheet Net amounts Financial instruments Cash collateral received/pledged (in billions) Financial assets: Derivative assets ¥ 12,911 ¥ — ¥ 12,911 ¥ (9,902) ¥ (690) ¥ 2,319 Receivables under resale agreements 16,152 (2,093) 14,059 (13,391) (32) 636 Receivables under securities borrowing transactions 4,630 (74) 4,556 (4,478) — 78 Total ¥ 33,693 ¥ (2,167) ¥ 31,526 ¥ (27,771) ¥ (722) ¥ 3,033 Financial liabilities: Derivative liabilities ¥ 13,833 ¥ — ¥ 13,833 ¥ (9,668) ¥ (1,489) ¥ 2,676 Payables under repurchase agreements 42,172 (2,040) 40,132 (39,232) (76) 824 Payables under securities lending transactions 1,212 (74) 1,138 (1,108) (18) 12 Obligations to return securities received as collateral 6,892 — 6,892 (1,975) — 4,917 Total ¥ 64,109 ¥ (2,114) ¥ 61,995 ¥ (51,983) ¥ (1,583) ¥ 8,429 Note: (1) Net amounts in this table includes those relating to Financial assets and liabilities of transferred business of MUFG Union Bank. See Note 2 for more information.
Offsetting Liabilities	For certain transactions where a legal opinion with respect to the enforceability of netting has not been sought or obtained, the related amounts are not subject to enforceable master netting agreements and not included in “Gross amounts not offset in the consolidated balance sheet” column in the tabular disclosure below. At March 31, 2022: Gross amounts of recognized assets/liabilities Gross amounts offset in the consolidated balance sheet Net amounts presented in the consolidated balance sheet (1) Gross amounts not offset in the consolidated balance sheet Net amounts Financial instruments Cash collateral received/pledged (in billions) Financial assets: Derivative assets ¥ 10,611 ¥ — ¥ 10,611 ¥ (7,032) ¥ (620) ¥ 2,959 Receivables under resale agreements 14,527 (2,024) 12,503 (11,614) (29) 860 Receivables under securities borrowing transactions 4,571 (75) 4,496 (4,367) — 129 Total ¥ 29,709 ¥ (2,099) ¥ 27,610 ¥ (23,013) ¥ (649) ¥ 3,948 Financial liabilities: Derivative liabilities ¥ 10,948 ¥ — ¥ 10,948 ¥ (6,749) ¥ (2,225) ¥ 1,974 Payables under repurchase agreements 29,717 (1,991) 27,726 (26,115) (85) 1,526 Payables under securities lending transactions 1,097 (75) 1,022 (990) (5) 27 Obligations to return securities received as collateral 6,826 — 6,826 (1,864) — 4,962 Total ¥ 48,588 ¥ (2,066) ¥ 46,522 ¥ (35,718) ¥ (2,315) ¥ 8,489 At March 31, 2023: Gross amounts of recognized assets/liabilities Gross amounts offset in the consolidated balance sheet Net amounts Gross amounts not offset in the consolidated balance sheet Net amounts Financial instruments Cash collateral received/pledged (in billions) Financial assets: Derivative assets ¥ 12,911 ¥ — ¥ 12,911 ¥ (9,902) ¥ (690) ¥ 2,319 Receivables under resale agreements 16,152 (2,093) 14,059 (13,391) (32) 636 Receivables under securities borrowing transactions 4,630 (74) 4,556 (4,478) — 78 Total ¥ 33,693 ¥ (2,167) ¥ 31,526 ¥ (27,771) ¥ (722) ¥ 3,033 Financial liabilities: Derivative liabilities ¥ 13,833 ¥ — ¥ 13,833 ¥ (9,668) ¥ (1,489) ¥ 2,676 Payables under repurchase agreements 42,172 (2,040) 40,132 (39,232) (76) 824 Payables under securities lending transactions 1,212 (74) 1,138 (1,108) (18) 12 Obligations to return securities received as collateral 6,892 — 6,892 (1,975) — 4,917 Total ¥ 64,109 ¥ (2,114) ¥ 61,995 ¥ (51,983) ¥ (1,583) ¥ 8,429 Note: (1) Net amounts in this table includes those relating to Financial assets and liabilities of transferred business of MUFG Union Bank. See Note 2 for more information.

Repurchase Agreements, and Se_2

Repurchase Agreements, and Securities Lending Transactions Accounted for as Secured Borrowings (Tables)	12 Months Ended
	Mar. 31, 2023
Disclosure of Repurchase Agreements [Abstract]
Gross Obligations by Remaining Contractual Maturity and Class of Collateral Pledged	March 31, 2022 Remaining Contractual Maturity Overnight and open 30 days or less 31-90 days Over 90 days Total (in billions) Payables under repurchase agreements ¥ 6,703 ¥ 17,050 ¥ 3,934 ¥ 2,030 ¥ 29,717 Payables under securities lending transactions 972 95 29 1 1,097 Obligations to return securities received as collateral 5,782 450 437 157 6,826 Total ¥ 13,457 ¥ 17,595 ¥ 4,400 ¥ 2,188 ¥ 37,640 March 31, 2023 Remaining Contractual Maturity Overnight and open 30 days or less 31-90 days Over 90 days Total (in billions) Payables under repurchase agreements ¥ 8,593 ¥ 23,546 ¥ 8,393 ¥ 1,640 ¥ 42,172 Payables under securities lending transactions 947 191 5 69 1,212 Obligations to return securities received as collateral 5,516 642 404 330 6,892 Total ¥ 15,056 ¥ 24,379 ¥ 8,802 ¥ 2,039 ¥ 50,276
Secured Borrowing by the Class of Collateral Pledged	Secured borrowing by the class of collateral pledged at March 31, 2022 and 2023 was as follows: March 31, 2022 Payables under repurchase agreements Payables under securities lending transactions Obligations to return securities received as collateral Total (in billions) Japanese national government and Japanese government agency bonds ¥ 7,486 ¥ 359 ¥ 4,199 ¥ 12,044 Foreign government and official institution bonds 14,116 11 1,017 15,144 Corporate bonds 745 68 330 1,143 Residential mortgage-backed securities 6,720 1 — 6,721 Other debt securities 276 — 2 278 Marketable equity securities 360 641 1,278 2,279 Other 14 17 — 31 Total ¥ 29,717 ¥ 1,097 ¥ 6,826 ¥ 37,640 March 31, 2023 Payables under repurchase agreements Payables under securities lending transactions Obligations to return securities received as collateral Total (in billions) Japanese national government and Japanese government agency bonds ¥ 13,280 ¥ 577 ¥ 3,956 ¥ 17,813 Foreign government and official institution bonds 17,618 9 1,122 18,749 Corporate bonds 657 70 400 1,127 Residential mortgage-backed securities 9,650 — — 9,650 Other debt securities 552 — 46 598 Marketable equity securities 367 556 1,368 2,291 Other 48 — — 48 Total ¥ 42,172 ¥ 1,212 ¥ 6,892 ¥ 50,276

Common Stock and Capital Surp_2

Common Stock and Capital Surplus (Tables)	12 Months Ended
	Mar. 31, 2023
Equity [Abstract]
Number of Shares Issued and Outstanding	The changes in the number of issued shares of common stock during the fiscal years ended March 31, 2021, 2022 and 2023 were as follows: 2021 2022 2023 (shares) Balance at beginning of fiscal year 13,581,995,120 13,581,995,120 13,281,995,120 Retirement of shares of common stock — (300,000,000) (594,284,200) Balance at end of fiscal year 13,581,995,120 13,281,995,120 12,687,710,920

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Mar. 31, 2023
Equity [Abstract]
Changes in Accumulated OCI, Net of Tax and Net of Noncontrolling Interests	The following table presents the changes in Accumulated OCI, net of tax and net of noncontrolling interests, for the fiscal years ended March 31, 2021, 2022 and 2023: 2021 2022 2023 (in millions) Accumulated other comprehensive income (loss), net of taxes: Net unrealized gains (losses) on investment securities: Balance at beginning of fiscal year ¥ (344,785) ¥ (383,004) ¥ (674,230) Net change during the fiscal year (38,253) (291,226) (227,053) Effect of adopting new guidance on measurement of credit losses on financial instruments 34 — — Elimination of the difference in reporting periods of the transferred business (Note 2) — — 17,817 Balance at end of fiscal year ¥ (383,004) ¥ (674,230) ¥ (883,466) Net debt valuation adjustments: Balance at beginning of fiscal year ¥ 45,502 ¥ (37,862) ¥ (14,538) Net change during the fiscal year (83,364) 23,324 17,806 Balance at end of fiscal year ¥ (37,862) ¥ (14,538) ¥ 3,268 Net unrealized gains (losses) on derivatives qualifying for cash flow hedges: Balance at beginning of fiscal year ¥ (13,343) ¥ 19,029 ¥ 5,969 Net change during the fiscal year 32,372 (13,060) 5,140 Elimination of the difference in reporting periods of the transferred business (Note 2) — — (10,515) Balance at end of fiscal year ¥ 19,029 ¥ 5,969 ¥ 594 Defined benefit plans: Balance at beginning of fiscal year ¥ (337,918) ¥ (20,382) ¥ 29,124 Net change during the fiscal year 317,536 49,506 6,773 Elimination of the difference in reporting periods of the transferred business (Note 2) — — (27,593) Balance at end of fiscal year ¥ (20,382) ¥ 29,124 ¥ 8,304 Foreign currency translation adjustments: Balance at beginning of fiscal year ¥ 230,127 ¥ 132,738 ¥ 880,708 Net change during the fiscal year (97,389) 747,970 834,784 Balance at end of fiscal year ¥ 132,738 ¥ 880,708 ¥ 1,715,492 Balance at end of fiscal year ¥ (289,481) ¥ 227,033 ¥ 844,192
Before Tax and Net of Tax Changes in Each Component of Accumulated OCI	The following table presents the before tax and net of tax changes in each component of Accumulated OCI for the fiscal years ended March 31, 2021, 2022 and 2023: 2021 2022 2023 Before tax Tax (expense) or benefit Net of tax Before tax Tax (expense) or benefit Net of tax Before tax Tax (expense) or benefit Net of tax (in millions) Net unrealized gains (losses) on investment securities: Net unrealized losses on investment securities ¥ (69,247) ¥ (599) ¥ (69,846) ¥ (347,106) ¥ 76,360 ¥ (270,746) ¥ (600,339) ¥ 159,480 ¥ (440,859) Reclassification adjustment for losses (gains) included in net income (loss) before attribution of noncontrolling interests (383) (547) (930) (2,015) 11,268 9,253 337,313 (99,409) 237,904 Elimination of the difference in reporting periods of the transferred business (Note 2) — — — — — — (24,147) 6,330 (17,817) Net change (69,630) (1,146) (70,776) (349,121) 87,628 (261,493) (287,173) 66,401 (220,772) Net unrealized gains (losses) on investment securities attributable to noncontrolling interests (32,523) 29,733 6,281 Net unrealized losses on investment securities attributable to Mitsubishi UFJ Financial Group (38,253) (291,226) (227,053) Net debt valuation adjustments: Net debt valuation adjustments (126,007) 38,584 (87,423) 32,735 (10,025) 22,710 25,220 (7,722) 17,498 Reclassification adjustment for losses included in net income (loss) before attribution of noncontrolling interests 5,851 (1,792) 4,059 885 (271) 614 444 (136) 308 Net change (120,156) 36,792 (83,364) 33,620 (10,296) 23,324 25,664 (7,858) 17,806 Net debt valuation adjustments attributable to noncontrolling interests — — — Net debt valuation adjustments attributable to Mitsubishi UFJ Financial Group (83,364) 23,324 17,806 Net unrealized gains (losses) on derivatives qualifying for cash flow hedges: Net unrealized gains (losses) on derivatives qualifying for cash flow hedges 44,255 (12,359) 31,896 (5,542) 1,825 (3,717) (38,278) 10,600 (27,678) Reclassification adjustment for losses (gains) included in net income (loss) before attribution of noncontrolling interests 164 115 279 (12,200) 3,143 (9,057) 31,019 (8,458) 22,561 Elimination of the difference in reporting periods of the transferred business (Note 2) — — — — — — 14,251 (3,736) 10,515 Net change 44,419 (12,244) 32,175 (17,742) 4,968 (12,774) 6,992 (1,594) 5,398 2021 2022 2023 Before tax Tax (expense) or benefit Net of tax Before tax Tax (expense) or benefit Net of tax Before tax Tax (expense) or benefit Net of tax (in millions) Net unrealized gains (losses) on derivatives qualifying for cash flow hedges attributable to noncontrolling interests (197) 286 258 Net unrealized gains (losses) on derivatives qualifying for cash flow hedges attributable to Mitsubishi UFJ Financial Group 32,372 (13,060) 5,140 Defined benefit plans: Defined benefit plans 436,435 (133,404) 303,031 62,946 (17,350) 45,596 (129,100) 37,654 (91,446) Reclassification adjustment for losses included in net income (loss) before attribution of noncontrolling interests 22,504 (6,479) 16,025 7,042 (1,689) 5,353 98,428 (27,313) 71,115 Elimination of the difference in reporting periods of the transferred business (Note 2) — — — — — — 37,257 (9,664) 27,593 Net change 458,939 (139,883) 319,056 69,988 (19,039) 50,949 6,585 677 7,262 Defined benefit plans attributable to noncontrolling interests 1,520 1,443 489 Defined benefit plans attributable to Mitsubishi UFJ Financial Group 317,536 49,506 6,773 Foreign currency translation adjustments: Foreign currency translation adjustments (61,085) (14,370) (75,455) 853,517 (98,059) 755,458 958,705 (94,056) 864,649 Reclassification adjustment for gains included in net income (loss) before attribution of noncontrolling interests (57,534) 17,738 (39,796) (4,296) 1,317 (2,979) (24,424) 7,480 (16,944) Net change (118,619) 3,368 (115,251) 849,221 (96,742) 752,479 934,281 (86,576) 847,705 Foreign currency translation adjustments attributable to noncontrolling interests (17,862) 4,509 12,921 Foreign currency translation adjustments attributable to Mitsubishi UFJ Financial Group (97,389) 747,970 834,784 Other comprehensive income attributable to Mitsubishi UFJ Financial Group ¥ 130,902 ¥ 516,514 ¥ 637,450
Reclassification of Significant Items out of Accumulated OCI	The following table presents the effect of the reclassification of significant items out of Accumulated OCI on the respective line items of the accompanying consolidated statements of operations for the fiscal years ended March 31, 2021, 2022 and 2023: 2021 2022 2023 Details of Accumulated OCI components Amount reclassified out of Accumulated OCI Line items in the consolidated statements of operations (in millions) Net unrealized losses (gains) on investment securities Net losses (gains) on sales and redemptions of Available-for-sale debt securities ¥ 6,410 ¥ (48,637) ¥ (2,682) Investment securities gains (losses)—net Impairment losses on investment securities 6 47,069 359,629 Investment securities gains (losses)—net Gain on sale of MUFG Union Bank (Note 2) — — (28,251) Gain on sale of MUFG Union Bank Other (6,799) (447) 8,617 (383) (2,015) 337,313 Total before tax (547) 11,268 (99,409) Income tax expense (benefit) ¥ (930) ¥ 9,253 ¥ 237,904 Net of tax Net debt valuation adjustments ¥ 5,851 ¥ 885 ¥ 444 Equity in earnings of equity method investees—net or Other non-interest income 5,851 885 444 Total before tax (1,792) (271) (136) Income tax expense (benefit) ¥ 4,059 ¥ 614 ¥ 308 Net of tax Net unrealized losses (gains) on derivatives qualifying for cash flow hedges Interest rate contracts Interest rate contracts ¥ (3,579) ¥ (12,017) ¥ (4,447) Interest income on Loans, Foreign exchange contracts 3,743 (183) (1,419) Interest expense on Long-term debt or Foreign exchange gains—net Gain on sale of MUFG Union Bank (Note 2) — — 36,885 Gain on sale of MUFG Union Bank 164 (12,200) 31,019 Total before tax 115 3,143 (8,458) Income tax expense (benefit) ¥ 279 ¥ (9,057) ¥ 22,561 Net of tax Defined benefit plans Net actuarial loss (1) ¥ 28,787 ¥ 17,279 ¥ 9,135 Other non-interest expenses Prior service cost (1) (4,267) (4,467) (4,952) Other non-interest expenses Loss (gain) on settlements and curtailment, and other (1) (2,016) (5,770) 79,850 Other non-interest income or expenses Gain on sale of MUFG Union Bank (Note 2) — — 14,395 Gain on sale of MUFG Union Bank 22,504 7,042 98,428 Total before tax (6,479) (1,689) (27,313) Income tax expense (benefit) ¥ 16,025 ¥ 5,353 ¥ 71,115 Net of tax Foreign currency translation adjustments ¥ (57,561) ¥ (4,303) ¥ (24,424) Other non-interest income 27 7 — Other non-interest expenses (57,534) (4,296) (24,424) Total before tax 17,738 1,317 7,480 Income tax expense (benefit) ¥ (39,796) ¥ (2,979) ¥ (16,944) Net of tax Total reclassifications for the period ¥ (29,398) ¥ (10,584) ¥ 442,780 Total before tax 9,035 13,768 (127,836) Income tax expense (benefit) ¥ (20,363) ¥ 3,184 ¥ 314,944 Net of tax Note:

Regulatory Capital Requiremen_2

Regulatory Capital Requirements (Tables)	12 Months Ended
	Mar. 31, 2023
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]
Risk-adjusted Capital Amounts and Ratios	The risk-adjusted capital amounts and ratios, and leverage ratios, of MUFG, MUFG Bank and Mitsubishi UFJ Trust and Banking presented in the following table are based on amounts calculated in accordance with Japanese GAAP as required by the FSA. Actual For capital adequacy purposes Amount Ratio Amount Ratio (in millions, except percentages) Consolidated: At March 31, 2022: Total capital (to risk-weighted assets): MUFG (1) ¥ 17,858,656 14.29 % ¥ 15,002,201 12.01 % BK 14,076,877 12.94 8,700,226 8.00 TB 1,969,282 20.78 758,073 8.00 Tier 1 capital (to risk-weighted assets): MUFG (1) 15,476,287 12.38 12,503,916 10.01 BK 12,092,189 11.11 6,525,170 6.00 TB 1,803,306 19.03 568,555 6.00 Common Equity Tier 1 capital (to risk-weighted assets): MUFG (1) 13,823,912 11.06 10,630,203 8.51 BK 10,728,587 9.86 4,893,877 4.50 TB 1,640,458 17.31 426,416 4.50 Leverage ratio: MUFG 15,476,287 5.14 9,023,770 3.00 BK 12,092,189 4.96 7,312,672 3.00 TB 1,803,306 6.77 798,855 3.00 At March 31, 2023: Total capital (to risk-weighted assets): MUFG (1) ¥ 17,166,109 13.91 % ¥ 14,852,953 12.04 % BK 14,207,818 12.58 9,029,639 8.00 TB 2,041,563 20.67 790,026 8.00 Tier 1 capital (to risk-weighted assets): MUFG (1) 14,863,717 12.04 12,385,685 10.04 BK 12,469,254 11.04 6,772,229 6.00 TB 1,770,924 17.93 592,519 6.00 Common Equity Tier 1 capital (to risk-weighted assets): MUFG (1) 13,280,842 10.76 10,535,234 8.54 BK 11,172,146 9.89 5,079,172 4.50 TB 1,620,889 16.41 444,389 4.50 Leverage ratio: MUFG (2) 14,863,717 4.70 11,851,297 3.75 BK 12,469,254 4.75 7,867,085 3.00 TB 1,770,924 7.29 728,488 3.00 Actual For capital Amount Ratio Amount Ratio (in millions, except percentages) Stand-alone: At March 31, 2022: Total capital (to risk-weighted assets): BK ¥ 11,167,553 11.91 % ¥ 7,498,348 8.00 % TB 2,122,840 19.97 850,030 8.00 Tier 1 capital (to risk-weighted assets): BK 9,565,792 10.20 5,623,761 6.00 TB 1,957,340 18.42 637,523 6.00 Common Equity Tier 1 capital (to risk-weighted assets): BK 8,261,659 8.81 4,217,821 4.50 TB 1,794,840 16.89 478,142 4.50 Leverage ratio: BK 9,565,792 4.59 6,249,606 3.00 TB 1,957,340 7.81 751,302 3.00 At March 31, 2023: Total capital (to risk-weighted assets): BK ¥ 11,115,302 10.71 % ¥ 8,295,019 8.00 % TB 2,131,007 19.60 869,700 8.00 Tier 1 capital (to risk-weighted assets): BK 9,644,128 9.30 6,221,264 6.00 TB 1,861,150 17.11 652,275 6.00 Common Equity Tier 1 capital (to risk-weighted assets): BK 8,410,290 8.11 4,665,948 4.50 TB 1,711,650 15.74 489,206 4.50 Leverage ratio: BK 9,644,128 4.02 7,183,295 3.00 TB 1,861,150 8.15 684,297 3.00 Notes: (1) Effective March 31, 2016, the FSA’s capital conservation buffer, countercyclical buffer and G-SIB surcharge requirements became applicable to Japanese banking institutions with international operations conducted through foreign offices. As a result, in addition to the 4.50% minimum Common Equity Tier 1 capital ratio, MUFG is required to maintain a capital conservation buffer of 2.5% and a G-SIB surcharge of 1.5% as of March 31, 2022 and 2023, and the countercyclical buffer of 0.01% and 0.04% as of March 31, 2022 and 2023, respectively. (2) Effective March 31, 2023, the G-SIB leverage ratio buffer requirement became applicable to Japanese banking institutions with international operations conducted through foreign offices. As a result, in addition to the 3.0% minimum leverage ratio, MUFG is required to maintain a G-SIB leverage ratio buffer of 0.75% as of March 31, 2023. Actual Minimum capital ratios required (1) Amount Ratio Amount Ratio (in millions, except percentages) MUAH: At December 31, 2021: Total capital (to risk-weighted assets) $ 17,177 16.32 % $ 11,890 11.30 % Tier 1 capital (to risk-weighted assets) 16,843 16.01 9,786 9.30 Tier 1 capital (to quarterly average assets) (2) 16,843 10.44 6,453 4.00 Common Equity Tier 1 capital (to risk-weighted assets) 16,843 16.01 8,208 7.80 Notes: (1) The minimum capital requirement includes a capital conservation buffer of 3.3% at December 31, 2021. (2) Excludes certain deductions. The figures on the table below are calculated according to U.S. Basel III as of December 31, 2021. MUFG Union Bank’s actual capital amounts and ratios are presented as follows: Actual Minimum capital ratios required (1) Ratios OCC requires to be “well capitalized” Amount Ratio Amount Ratio Amount Ratio (in millions, except percentages) BK(US): At December 31, 2021: Total capital (to risk-weighted assets) $ 16,265 17.36 % $ 9,840 10.50 % $ 9,371 10.00 % Tier 1 capital (to risk-weighted assets) 15,629 16.68 7,966 8.50 7,497 8.00 Tier 1 capital (to quarterly average assets) (2) 15,629 12.14 5,149 4.00 6,436 5.00 Common Equity Tier 1 capital (to risk-weighted assets) 15,629 16.68 6,560 7.00 6,091 6.50 Notes: (1) Beginning January 1, 2019, the minimum capital requirement includes a capital conservation buffer of 2.5%. (2) Excludes certain deductions.

Earnings (Loss) Per Common Sh_2

Earnings (Loss) Per Common Share Applicable to Common Shareholders of MUFG (Tables)	12 Months Ended
	Mar. 31, 2023
Earnings Per Share [Abstract]
Reconciliations of Net Income (Loss) and Weighted Average Number of Common Shares Outstanding Used for Computation of Basic EPS to Adjusted Amounts for Computation of Diluted EPS	Reconciliations of net income (loss) and weighted average number of common shares outstanding used for the computation of basic EPS to the adjusted amounts for the computation of diluted EPS for the fiscal years ended March 31, 2021, 2022 and 2023 are as follows: 2021 2022 2023 (in millions) Income (loss) (Numerator): Net income (loss) attributable to Mitsubishi UFJ Financial Group ¥ 1,117,298 ¥ (83,320) ¥ 599,908 Effect of dilutive instruments: Stock acquisition rights and restricted stock units—Morgan Stanley (4,159) (5,361) (3,816) Earnings (loss) applicable to common shareholders of Mitsubishi UFJ Financial Group and assumed conversions ¥ 1,113,139 ¥ (88,681) ¥ 596,092 2021 2022 2023 (thousands of shares) Shares (Denominator): Weighted average common shares outstanding 12,859,737 12,798,060 12,317,723 Effect of dilutive instruments: Stock acquisition rights and the common shares of MUFG under the Board Incentive Plan (1) — — 1,132 Weighted average common shares for diluted computation 12,859,737 12,798,060 12,318,855 2021 2022 2023 (in yen) Earnings (loss) per common share applicable to common shareholders of Mitsubishi UFJ Financial Group: Basic earnings (loss) per common share: Earnings (loss) applicable to common shareholders of Mitsubishi UFJ Financial Group ¥ 86.88 ¥ (6.51) ¥48.70 Diluted earnings (loss) per common share: Earnings (loss) applicable to common shareholders of Mitsubishi UFJ Financial Group (1) ¥ 86.56 ¥ (6.93) ¥48.39 Note:

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	12 Months Ended
	Mar. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Notional Amounts of Derivative Contracts	The following table summarizes the notional amounts of derivative contracts at March 31, 2022 and 2023: Notional amounts (1) 2022 2023 (in trillions) Interest rate contracts ¥ 1,391.8 ¥ 1,625.6 Foreign exchange contracts 245.0 307.4 Equity contracts 7.4 5.3 Commodity contracts 0.1 0.1 Credit derivatives 9.8 11.5 Other 3.2 3.2 Total ¥ 1,657.3 ¥ 1,953.1 Note:
Fair Value Information on Derivative Instruments Recorded on Consolidated Balance Sheet	The following table summarizes fair value information on derivative instruments that are recorded on the MUFG Group’s consolidated balance sheets at March 31, 2022 and 2023: Fair value of derivative instruments 2022 (1)(5) 2023 (1)(5) Not designated as hedges (2) Designated as hedges (3) Total derivatives (4) Not designated as hedges (2) Designated as hedges (3) Total derivatives (4) (in billions) Derivative assets: Interest rate contracts ¥ 5,445 ¥ — ¥ 5,445 ¥ 7,445 ¥ — ¥ 7,445 Foreign exchange contracts 4,801 2 4,803 5,276 5 5,281 Equity contracts 151 — 151 90 — 90 Commodity contracts 22 — 22 10 — 10 Credit derivatives 103 — 103 80 — 80 Other (6) 10 — 10 5 — 5 Total derivative assets ¥ 10,532 ¥ 2 ¥ 10,534 ¥ 12,906 ¥ 5 ¥ 12,911 Derivative liabilities: Interest rate contracts ¥ 5,652 ¥ — ¥ 5,652 ¥ 8,697 ¥ — ¥ 8,697 Foreign exchange contracts 4,907 1 4,908 5,018 — 5,018 Equity contracts 277 — 277 128 — 128 Commodity contracts 22 — 22 10 — 10 Credit derivatives 101 — 101 90 — 90 Other (6) (65) — (65) (110) — (110) Total derivative liabilities ¥ 10,894 ¥ 1 ¥ 10,895 ¥ 13,833 ¥ — ¥ 13,833 Notes: (1) The fair value of derivative instruments is presented on a gross basis even when derivative instruments are subject to master netting agreements. Cash collateral payable and receivable associated with derivative instruments are not added to or netted against the fair value amounts. (2) The derivative instruments which are not designated as a hedging instrument are held for trading and risk management purposes, and are presented in Trading account assets liabilities (3) The MUFG Group adopts hedging strategies and applies hedge accounting to certain derivative transactions entered into by certain subsidiaries. The derivative instruments which are designated as hedging instruments are presented in Other assets or Other liabilities on the accompanying consolidated balance sheets. (4) This table does not include contracts with embedded derivatives for which the fair value option has been elected. (5) For more information about fair value measurement and assumptions used to measure the fair value of derivatives, see Note 31.
Gains and Losses for Trading and Risk Management Derivatives (Not Designated as Hedging Instruments)	Gains and losses for trading and risk management derivatives (not designated as hedging instruments) Trading and risk management derivatives gains and losses (Not designated as hedging instruments) 2021 2022 2023 Foreign exchange gains (losses) —net Trading account profits (losses) —net Total Foreign exchange gains (losses) —net Trading account profits (losses) —net Total Foreign exchange gains (losses) —net Trading account profits (losses) —net Total (in billions) Interest rate contracts ¥ — ¥ 70 ¥ 70 ¥ — ¥ 51 ¥ 51 ¥ — ¥ 263 ¥ 263 Foreign exchange contracts (91) — (91) (39) — (39) 61 — 61 Equity contracts — (269) (269) — (98) (98) — (13) (13) Credit derivatives — (53) (53) — (34) (34) — (20) (20) Other (1) 11 (178) (167) (6) (21) (27) (3) 8 5 Total ¥ (80) ¥ (430) ¥ (510) ¥ (45) ¥ (102) ¥ (147) ¥ 58 ¥ 238 ¥ 296 Note:
Protection Sold Through Credit Derivatives	The table below summarizes certain information regarding protection sold through credit derivatives as of March 31, 2022 and 2023: Protection sold Maximum potential/Notional amount by expiration period Fair value At March 31, 2022: 1 year or less 1-5 years Over 5 years Total (Asset)/ Liability (1) (in millions) Single name credit default swaps: Investment grade (2) ¥ 408,281 ¥ 1,874,796 ¥ 731,946 ¥ 3,015,023 ¥ (61,308) Non-investment grade 91,161 349,847 66,452 507,460 5,378 Total 499,442 2,224,643 798,398 3,522,483 (55,930) Index and basket credit default swaps: Investment grade (2) 67,600 458,153 36,955 562,708 (9,604) Non-investment grade 56,299 19,936 — 76,235 (61) Not rated 19,944 279,955 886 300,785 (7,320) Total 143,843 758,044 37,841 939,728 (16,985) Total credit default swaps sold ¥ 643,285 ¥ 2,982,687 ¥ 836,239 ¥ 4,462,211 ¥ (72,915) Protection sold Maximum potential/Notional amount by expiration period Fair value At March 31, 2023: 1 year or less 1-5 years Over 5 years Total (Asset)/ Liability (1) (in millions) Single name credit default swaps: Investment grade (2) ¥ 616,504 ¥ 2,222,393 ¥ 529,796 ¥ 3,368,693 ¥ (30,117) Non-investment grade 163,982 313,135 48,177 525,294 13,477 Total 780,486 2,535,528 577,973 3,893,987 (16,640) Index and basket credit default swaps: Investment grade (2) — 217,259 1,596 218,855 (1,266) Non-investment grade 37,359 599,638 6,200 643,197 (7,121) Not rated — 435,452 3,192 438,644 (3,329) Total 37,359 1,252,349 10,988 1,300,696 (11,716) Total credit default swaps sold ¥ 817,845 ¥ 3,787,877 ¥ 588,961 ¥ 5,194,683 ¥ (28,356) Notes: (1) Fair value amounts are shown on a gross basis prior to cash collateral or counterparty netting. (2) The MUFG Group considers ratings of Baa3/BBB- or higher to meet the definition of investment grade.

Obligations under Guarantees _2

Obligations under Guarantees and Other Off-balance Sheet Instruments (Tables)	12 Months Ended
	Mar. 31, 2023
Guarantee Obligations And Other Off Balance Sheet Instruments [Abstract]
Contractual or Notional Amounts of Guarantees with Amount by Expiration Period	The contractual or notional amounts summarized in the following table do not necessarily bear any direct relationship to the future actual credit exposure, primarily because of risk management techniques of the MUFG Group. Maximum potential/ Contractual or Notional amount Amount by expiration period At March 31, 2022: 1 year or less 1-5 years Over 5 years (in billions) Standby letters of credit and financial guarantees ¥ 4,731 ¥ 3,733 ¥ 784 ¥ 214 Performance guarantees 3,828 2,807 887 134 Derivative instruments (1) 39,982 14,670 16,988 8,324 Liabilities of trust accounts 12,262 6,413 672 5,177 Other 71 6 65 — Total ¥ 60,874 ¥ 27,629 ¥ 19,396 ¥ 13,849 Maximum potential/ Contractual or Notional amount Amount by expiration period At March 31, 2023: 1 year or less 1-5 years Over 5 years (in billions) Standby letters of credit and financial guarantees ¥ 4,975 ¥ 4,047 ¥ 743 ¥ 185 Performance guarantees 4,179 3,100 930 149 Derivative instruments (1) 48,363 22,197 16,036 10,130 Liabilities of trust accounts 17,139 8,780 798 7,561 Other 85 15 70 — Total ¥ 74,741 ¥ 38,139 ¥ 18,577 ¥ 18,025 Note:
Maximum Potential Amount of Future Payments Classified Based upon Internal Credit Ratings	Presented in the tables below is the maximum potential amount of future payments classified based upon internal credit ratings as of March 31, 2022 and 2023. The determination of the maximum potential future payments is based on the notional amount of the guarantees without consideration of possible recoveries under recourse provisions or from collateral held or pledged. Such amounts do not represent the anticipated losses, if any, on these guarantees. Amount by borrower grade At March 31, 2022: Maximum potential/ Contractual or Notional amount Normal Close Watch (1) Likely to become Bankrupt or Legally/ Virtually Bankrupt (2) Not rated (in billions) Standby letters of credit and financial guarantees ¥ 4,731 ¥ 4,575 ¥ 121 ¥ 31 ¥ 4 Performance guarantees 3,828 3,706 73 22 27 Total ¥ 8,559 ¥ 8,281 ¥ 194 ¥ 53 ¥ 31 Amount by borrower grade At March 31, 2023: Maximum potential/ Contractual or Notional amount Normal Close Watch (1) Likely to become Bankrupt or Legally/ Virtually Bankrupt (2) Not rated (in billions) Standby letters of credit and financial guarantees ¥ 4,975 ¥ 4,819 ¥ 78 ¥ 17 ¥ 61 Performance guarantees 4,179 4,066 53 29 31 Total ¥ 9,154 ¥ 8,885 ¥ 131 ¥ 46 ¥ 92 Notes: (1) Borrowers classified as Close Watch represent those that require close monitoring as the borrower has begun to exhibit elements of potential concern with respect to its business performance and financial condition, the borrower has begun to exhibit elements of serious concern with respect to its business performance and financial condition, including business problems requiring long-term solutions, or the borrower’s loans are TDRs or loans contractually past due 90 days or more for special reasons.
Contractual Amounts with Regard to Other Off-balance Sheet Instruments	The table below presents the contractual amounts with regard to the other off-balance sheet instruments at March 31, 2022 and 2023: 2022 2023 (in billions) Commitments to extend credit ¥ 82,886 ¥ 88,631 Commercial letters of credit 908 871 Commitments to make investments 478 705

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	12 Months Ended
	Mar. 31, 2023
Variable Interest Entities [Abstract]
Assets and Liabilities of Variable Interest Entities	The following tables present the assets and liabilities of consolidated VIEs recorded on the accompanying consolidated balance sheets at March 31, 2022 and 2023: Consolidated VIEs Consolidated assets At March 31, 2022: Total Cash and due from banks Interest-earning deposits in other banks Trading account assets Investment securities Loans All other assets (in millions) Asset-backed conduits ¥ 6,115,286 ¥ 114,679 ¥ 24,959 ¥ 30,114 ¥ 906,109 ¥ 5,016,254 ¥ 23,171 Investment funds 538,336 578 28,021 351,806 55,567 — 102,364 Special purpose entities created for structured financing 192,200 1,694 5,463 7,294 — 119,002 58,747 Repackaged instruments 342,771 4,798 — 134,387 111,711 88,209 3,666 Securitization of the MUFG Group’s assets 10,544,934 — 1,204 — — 10,526,124 17,606 Trust arrangements 8,581,448 — — 760,960 1,303,063 6,517,421 4 Other 67,650 465 3,910 22,110 15,684 3,496 21,985 Total consolidated assets before elimination 26,382,625 122,214 63,557 1,306,671 2,392,134 22,270,506 227,543 The amounts eliminated in consolidation (7,424,058) (115,486) (36,175) (54,363) (567,242) (6,619,044) (31,748) Total consolidated assets ¥ 18,958,567 ¥ 6,728 ¥ 27,382 ¥ 1,252,308 ¥ 1,824,892 ¥ 15,651,462 ¥ 195,795 Consolidated liabilities Total Deposits Other short-term borrowings Long-term debt All other liabilities (in millions) Asset-backed conduits ¥ 6,091,830 ¥ — ¥ 4,443,656 ¥ 1,337,938 ¥ 310,236 Investment funds 29,368 — — 6,497 22,871 Special purpose entities created for structured financing 101,814 — — 95,218 6,596 Repackaged instruments 345,606 — 22,791 248,535 74,280 Securitization of the MUFG Group’s assets 10,569,281 — — 10,102,964 466,317 Trust arrangements 8,581,731 7,063,850 683,346 — 834,535 Other 63,126 — 2,268 39,511 21,347 Total consolidated liabilities before elimination 25,782,756 7,063,850 5,152,061 11,830,663 1,736,182 The amounts eliminated in consolidation (15,116,977) (756) (2,590,224) (11,378,021) (1,147,976) The amount of liabilities with recourse to the general credit of the MUFG Group (10,081,747) (7,063,094) (2,522,255) (3,411) (492,987) Liabilities of consolidated VIEs for which creditors or beneficial interest holders do not have recourse to the general credit of the MUFG Group ¥ 584,032 ¥ — ¥ 39,582 ¥ 449,231 ¥ 95,219 Consolidated VIEs Consolidated assets At March 31, 2023: Total Cash and due from banks Interest-earning deposits in other banks Trading account assets Investment securities Loans All other assets (in millions) Asset-backed conduits ¥ 7,388,845 ¥ 71,649 ¥ 34,521 ¥ 47,606 ¥ 1,027,862 ¥ 6,185,514 ¥ 21,693 Investment funds 1,331,962 — 46,157 359,777 65,204 — 860,824 Special purpose entities created for structured financing 248,952 — 2,593 8,624 — 135,606 102,129 Repackaged instruments 243,513 7,882 — 167,007 53,617 15,007 — Securitization of the MUFG Group’s assets 10,389,398 — 1,434 — — 10,371,275 16,689 Trust arrangements 8,176,795 — — 833,864 1,514,530 5,828,397 4 Other 62,109 584 3,952 14,606 16,159 2,822 23,986 Total consolidated assets before elimination 27,841,574 80,115 88,657 1,431,484 2,677,372 22,538,621 1,025,325 The amounts eliminated in consolidation (6,739,954) (71,872) (36,626) (63,556) (600,635) (5,940,036) (27,229) Total consolidated assets ¥ 21,101,620 ¥ 8,243 ¥ 52,031 ¥ 1,367,928 ¥ 2,076,737 ¥ 16,598,585 ¥ 998,096 Consolidated liabilities Total Deposits Other short-term borrowings Long-term debt All other liabilities (in millions) Asset-backed conduits ¥ 7,364,030 ¥ — ¥ 5,587,813 ¥ 1,367,234 ¥ 408,983 Investment funds 830,751 — 817,292 7,407 6,052 Special purpose entities created for structured financing 127,768 — — 109,352 18,416 Repackaged instruments 245,829 — — 230,285 15,544 Securitization of the MUFG Group’s assets 10,418,160 — — 10,154,662 263,498 Trust arrangements 8,176,907 6,408,837 840,690 — 927,380 Other 56,902 — 1,456 31,900 23,546 Total consolidated liabilities before elimination 27,220,347 6,408,837 7,247,251 11,900,840 1,663,419 The amounts eliminated in consolidation (16,102,106) (302) (3,696,647) (11,469,378) (935,779) The amount of liabilities with recourse to the general credit of the MUFG Group (10,503,305) (6,408,535) (3,505,172) (25,033) (564,565) Liabilities of consolidated VIEs for which creditors or beneficial interest holders do not have recourse to the general credit of the MUFG Group ¥ 614,936 ¥ — ¥ 45,432 ¥ 406,429 ¥ 163,075 The following tables present the total assets of non-consolidated VIEs, the maximum exposure to loss resulting from the MUFG Group’s involvement with non-consolidated VIEs and the assets and liabilities which relate to the MUFG’s variable interests in non-consolidated VIEs at March 31, 2022 and 2023: Non-consolidated VIEs On-balance sheet assets On-balance sheet At March 31, 2022: Total assets Maximum Total Trading Investment Loans All Total All other (in millions) Asset-backed conduits ¥ 27,325,711 ¥ 6,010,143 ¥ 4,858,210 ¥ — ¥ 1,756,122 ¥ 3,102,088 ¥ — ¥ 520 ¥ 520 Investment funds 112,262,392 3,352,266 2,622,407 328,963 622,967 1,628,737 41,740 4,507 4,507 Special purpose entities created for structured financing 42,312,881 4,829,867 3,275,008 234,384 20,854 3,012,252 7,518 25,424 25,424 Repackaged instruments 7,533,839 3,627,418 3,448,224 563,524 2,424,602 373,834 86,264 1,590 1,590 Other 74,119,635 3,474,163 2,402,341 170,859 7,552 2,139,751 84,179 28,128 28,128 Total ¥ 263,554,458 ¥ 21,293,857 ¥ 16,606,190 ¥ 1,297,730 ¥ 4,832,097 ¥ 10,256,662 ¥ 219,701 ¥ 60,169 ¥ 60,169 Non-consolidated VIEs On-balance sheet assets On-balance sheet At March 31, 2023: Total assets Maximum Total Trading Investment Loans All Total All other (in millions) Asset-backed conduits ¥ 41,001,958 ¥ 8,062,589 ¥ 6,384,079 ¥ 21,719 ¥ 2,205,877 ¥ 4,142,995 ¥ 13,488 ¥ 10,823 ¥ 10,823 Investment funds 55,386,213 4,930,989 3,446,109 262,312 120,436 2,710,177 353,184 27,606 27,606 Special purpose entities created for structured financing 54,543,066 5,864,814 3,907,598 80,382 39,357 3,749,670 38,189 208,100 208,100 Repackaged instruments 9,034,058 4,372,581 4,117,969 944,795 2,641,384 386,793 144,997 2,230 2,230 Other 87,989,676 3,989,548 2,761,087 146,286 7,552 2,523,976 83,273 46,354 46,354 Total ¥ 247,954,971 ¥ 27,220,521 ¥ 20,616,842 ¥ 1,455,494 ¥ 5,014,606 ¥ 13,513,611 ¥ 633,131 ¥ 295,113 ¥ 295,113

Fees and Commissions Income (Ta

Fees and Commissions Income (Tables)	12 Months Ended
	Mar. 31, 2023
Revenue from Contract with Customer [Abstract]
Details of Fees and Commissions Income	Details of fees and commissions income for the fiscal years ended March 31, 2021, 2022 and 2023 were as follows: 2021 2022 2023 (in millions) Fees and commissions on deposits ¥ 50,131 ¥ 51,032 ¥ 49,785 Fees and commissions on remittances and transfers 165,288 157,236 147,582 Fees and commissions on foreign trading business 79,353 56,344 69,010 Fees and commissions on credit card business 199,625 207,080 230,386 Fees and commissions on security-related services 244,017 264,530 224,900 Fees and commissions on administration and management services for investment funds 235,497 286,549 282,282 Trust fees 125,658 133,322 131,069 Guarantee fees (1) 43,889 45,849 47,986 Insurance commissions 42,117 42,353 49,420 Fees and commissions on real estate business 48,110 65,611 68,407 Other fees and commissions (2) 293,598 348,957 400,810 Total ¥ 1,527,283 ¥ 1,658,863 ¥ 1,701,637 Notes: (1) Guarantee fees are not within the scope of the guidance on revenue from contracts with customers.

Trading Account Profits and L_2

Trading Account Profits and Losses (Tables)	12 Months Ended
	Mar. 31, 2023
Trading Account Profits And Losses [Abstract]
Net Trading Gains (Losses)	Net trading gains (losses) for the fiscal years ended March 31, 2021, 2022 and 2023 were comprised of the following: 2021 2022 2023 (in millions) Interest rate and other derivative contracts ¥ (429,586) ¥ (102,122) ¥ 238,162 Trading account securities, excluding derivatives 19,218 (722,298) (1,030,260) Trading account losses—net (410,368) (824,420) (792,098) Foreign exchange derivative contracts (1) (79,559) (44,693) 57,914 Net trading losses ¥ (489,927) ¥ (869,113) ¥ (734,184) Note:

Business Segments (Tables)

Business Segments (Tables)	12 Months Ended
	Mar. 31, 2023
Segment Reporting [Abstract]
Financial Information by Business Segment	Prior period business segment information has been restated to enable comparison between the relevant amounts for the fiscal years ended March 31, 2021, 2022 and 2023. Customer Business Global Other Total Digital Retail & Japanese Global Asset Global Total (in billions) Fiscal year ended March 31, 2021: Net revenue: ¥ 744.7 ¥ 550.3 ¥ 565.7 ¥ 778.7 ¥ 293.4 ¥ 438.7 ¥ 3,371.5 ¥ 640.3 ¥ (7.2) ¥ 4,004.6 BK and TB (1) : 255.5 373.2 453.5 1.0 99.4 274.7 1,457.3 386.3 34.2 1,877.8 Net interest income 223.4 165.9 187.4 3.3 5.5 138.2 723.7 166.9 80.8 971.4 Net fees 29.2 188.9 218.6 — 93.9 136.9 667.5 (2.4) (58.8) 606.3 Other 2.9 18.4 47.5 (2.3) — (0.4) 66.1 221.8 12.2 300.1 Other than BK and TB 489.2 177.1 112.2 777.7 194.0 164.0 1,914.2 254.0 (41.4) 2,126.8 Operating expenses 565.0 492.2 319.9 501.7 213.0 272.2 2,364.0 243.1 150.5 2,757.6 Operating profit (loss) ¥ 179.7 ¥ 58.1 ¥ 245.8 ¥ 277.0 ¥ 80.4 ¥ 166.5 ¥ 1,007.5 ¥ 397.2 ¥ (157.7) ¥ 1,247.0 Fiscal year ended March 31, 2022: Net revenue: ¥ 741.6 ¥ 584.6 ¥ 623.2 ¥ 771.7 ¥ 348.9 ¥ 540.1 ¥ 3,610.1 ¥ 427.0 ¥ 11.3 ¥ 4,048.4 BK and TB (1) : 257.2 390.3 496.8 1.9 106.3 362.2 1,614.7 203.4 53.2 1,871.3 Net interest income 219.3 166.8 231.6 1.9 9.3 172.2 801.1 231.5 120.0 1,152.6 Net fees 36.0 201.7 212.7 — 97.0 173.8 721.2 (8.7) (55.9) 656.6 Other 1.9 21.8 52.5 — — 16.2 92.4 (19.4) (10.9) 62.1 Other than BK and TB 484.4 194.3 126.4 769.8 242.6 177.9 1,995.4 223.6 (41.9) 2,177.1 Operating expenses 558.9 490.9 320.9 528.0 241.4 295.3 2,435.4 253.0 127.6 2,816.0 Operating profit (loss) ¥ 182.7 ¥ 93.7 ¥ 302.3 ¥ 243.7 ¥ 107.5 ¥ 244.8 ¥ 1,174.7 ¥ 174.0 ¥ (116.3) ¥ 1,232.4 Fixed assets (2) ¥ 140.6 ¥ 191.7 ¥ 155.8 ¥ 1.0 ¥ 13.3 ¥ 133.0 ¥ 635.4 ¥ 108.4 ¥ 550.3 ¥ 1,294.1 Fiscal year ended March 31, 2023: Net revenue: ¥ 747.6 ¥ 614.1 ¥ 805.7 ¥ 870.6 ¥ 360.8 ¥ 712.9 ¥ 4,111.7 ¥ 408.9 ¥ (4.8) ¥ 4,515.8 BK and TB (1) : 251.4 429.6 647.4 35.1 105.4 531.9 2,000.8 130.6 19.2 2,150.6 Net interest income 215.4 196.5 355.0 35.7 9.4 260.3 1,072.3 710.4 71.9 1,854.6 Net fees 32.9 200.5 230.6 — 96.0 243.1 803.1 (16.6) (50.0) 736.5 Other 3.1 32.6 61.8 (0.6) — 28.5 125.4 (563.2) (2.7) (440.5) Other than BK and TB 496.2 184.5 158.3 835.5 255.4 181.0 2,110.9 278.3 (24.0) 2,365.2 Operating expenses 533.2 456.8 331.1 580.3 255.7 336.9 2,494.0 271.8 172.4 2,938.2 Operating profit (loss) ¥ 214.4 ¥ 157.3 ¥ 474.6 ¥ 290.3 ¥ 105.1 ¥ 376.0 ¥ 1,617.7 ¥ 137.1 ¥ (177.2) ¥ 1,577.6 Fixed assets (2) ¥ 156.9 ¥ 201.9 ¥ 161.2 ¥ 1.1 ¥ 18.8 ¥ 171.2 ¥ 711.2 ¥ 110.6 ¥ 546.3 ¥ 1,368.1 Increase in fixed assets (3) ¥ 37.0 ¥ 41.9 ¥ 37.1 ¥ 0.6 ¥ 11.6 ¥ 23.4 ¥ 151.5 ¥ 23.2 ¥ 34.2 ¥ 208.9 Depreciation (3) ¥ 10.6 ¥ 21.1 ¥ 36.6 ¥ 0.2 ¥ 6.0 ¥ 35.2 ¥ 109.8 ¥ 28.3 ¥ 19.5 ¥ 157.6 Notes: (1) “BK and TB” is a sum of MUFG Bank on a stand-alone basis (BK) and Mitsubishi UFJ Trust and Banking on a stand-alone basis (TB). (2) Fixed assets in the above table are based on the financial information prepared in accordance with Japanese GAAP as adjusted in accordance with internal management accounting rules and practices, and it corresponds to the U.S. GAAP amounts of premises and equipment-net, intangible assets-net and goodwill of BK and TB. Fixed assets of MUFG and other consolidated subsidiaries and Japanese GAAP consolidation adjustments amounting to ¥1,286.1 billion as of March 31, 2022 and ¥1,210.2 billion as of March 31, 2023, respectively, are not allocated to each business segment when determining the allocation of management resources and assessing performance and, therefore, such amounts are not included in the table above. (3) These amounts are related to the fixed assets of BK and TB included in the table above.
Reconciliation of Operating Profit (Loss) from Segments to Consolidated Statements of Income	A reconciliation of operating profit and fixed assets under the internal management reporting system for the fiscal years ended March 31, 2021, 2022 and 2023 above to income before income tax expense shown in the accompanying consolidated statements of operations and the total amount of premises and equipment-net, intangible assets-net and goodwill are as follows: 2021 2022 2023 (in billions) Operating profit: ¥ 1,247 ¥ 1,232 ¥ 1,578 Provision for credit losses (484) (278) (8) Trading account losses—net (678) (1,174) (1,385) Equity investment securities gains (losses)—net 1,480 (109) (139) Debt investment securities gains (losses)—net (129) 139 517 Foreign exchange gains (losses)—net 9 (9) (33) Equity in earnings of equity method investees—net 356 437 398 Impairment of goodwill (148) — (34) Impairment of intangible assets (22) (33) (5) Reversal of (provision for) off-balance sheet credit instruments 57 (46) (21) Reversal of impairment (impairment) of assets held for sale — (134) 134 Loss on valuation adjustment for loans held for sale held by MUFG Union Bank — (3) (283) Gain on sale of MUFG Union Bank — — 558 Loss on pension buyout — — (84) Other—net (80) (81) (536) Income (loss) before income tax expense (benefit) ¥ 1,608 ¥ (59) ¥ 657 Fixed assets: ¥ — ¥ 1,294 ¥ 1,368 U.S. GAAP adjustments and other — 974 964 Premises and equipment-net, Intangible assets-net and Goodwill ¥ — ¥ 2,268 ¥ 2,332

Foreign Activities (Tables)

Foreign Activities (Tables)	12 Months Ended
	Mar. 31, 2023
Segments, Geographical Areas [Abstract]
Estimated Financial Information by Geographic Areas	The following table sets forth estimated total assets at March 31, 2021, 2022 and 2023, and estimated total revenue, total expense, income (loss) before income tax expense (benefit) and net income (loss) attributable to Mitsubishi UFJ Financial Group for the respective fiscal years then ended: Domestic Foreign Total Japan United States of America Europe Asia/ Oceania excluding Japan Other areas (1) (in millions) Fiscal year ended March 31, 2021: Total revenue (2) ¥ 3,348,733 ¥ 741,137 ¥ 356,112 ¥ 1,134,233 ¥ 329,568 ¥ 5,909,783 Total expense (3) 2,316,323 713,441 263,753 889,494 118,430 4,301,441 Income before income tax expense 1,032,410 27,696 92,359 244,739 211,138 1,608,342 Net income (loss) attributable to Mitsubishi UFJ Financial Group 627,138 (231,116) 74,230 366,880 280,166 1,117,298 Total assets at end of fiscal year 240,603,939 49,478,851 21,126,639 31,368,443 11,246,753 353,824,625 Fiscal year ended March 31, 2022: Total revenue (2) ¥ 2,160,509 ¥ 500,590 ¥ 67,687 ¥ 975,340 ¥ 221,601 ¥ 3,925,727 Total expense (3) 2,198,650 666,564 311,639 726,042 81,559 3,984,454 Income (loss) before income tax expense (benefit) (38,141) (165,974) (243,952) 249,298 140,042 (58,727) Net income (loss) attributable to Mitsubishi UFJ Financial Group (7,380) (498,205) (344,044) 506,621 259,688 (83,320) Total assets at end of fiscal year (4) 246,637,054 54,576,602 22,319,350 31,909,321 12,207,691 367,650,018 Fiscal year ended March 31, 2023: Total revenue (2) ¥ 2,617,973 ¥ 1,527,756 ¥ 173,013 ¥ 1,479,618 ¥ 508,472 ¥ 6,306,832 Total expense (3) 2,074,369 1,621,492 370,130 1,282,806 301,301 5,650,098 Income (loss) before income tax expense (benefit) 543,604 (93,736) (197,117) 196,812 207,171 656,734 Net income (loss) attributable to Mitsubishi UFJ Financial Group 616,243 113,038 (246,138) 9,074 107,691 599,908 Total assets at end of fiscal year 249,539,149 59,695,647 24,675,334 34,452,071 13,373,532 381,735,733 Notes: (1) Other areas primarily include Canada, Latin America, the Caribbean and the Middle East. (2) Total revenue is comprised of Interest income and Non-interest income. (3) Total expense is comprised of Interest expense, Provision for credit losses and Non-interest expense. (4) Total assets at the fiscal year ended March 31, 2022 in this table includes those relating to financial assets and liabilities of transferred business of MUFG Union Bank. See Note 2 for more information.
Analysis of Certain Asset and Liability Accounts Related to Foreign Activities	The following is an analysis of certain asset and liability accounts related to foreign activities at March 31, 2022 and 2023: 2022 2023 (in millions) Cash and due from banks ¥ 1,050,661 ¥ 738,309 Interest-earning deposits in other banks 12,459,897 17,518,035 Total ¥ 13,510,558 ¥ 18,256,344 Trading account assets ¥ 26,849,102 ¥ 31,158,079 Investment securities ¥ 7,157,322 ¥ 11,456,886 Loans—net of unearned income, unamortized premiums and deferred loan fees ¥ 45,338,581 ¥ 50,981,148 Deposits ¥ 46,932,643 ¥ 52,278,932 Funds borrowed: Call money, funds purchased ¥ 306,053 ¥ 18,088 Payables under repurchase agreements 10,769,853 10,730,611 Payables under securities lending transactions 144,854 54,985 Other short-term borrowings 3,940,997 5,058,454 Long-term debt 1,596,146 1,530,782 Total ¥ 16,757,903 ¥ 17,392,920 Trading account liabilities ¥ 5,919,017 ¥ 8,611,974

Fair Value (Tables)

Fair Value (Tables)	12 Months Ended
	Mar. 31, 2023
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value by Level on Recurring Basis	The following tables present the financial instruments carried at fair value by level within the fair value hierarchy as of March 31, 2022 and 2023: At March 31, 2022 Level 1 Level 2 Level 3 Fair Value (in millions) Assets Trading account assets: Trading securities (1) ¥ 17,170,976 ¥ 13,998,654 ¥ 797,997 ¥ 31,967,627 Debt securities Japanese national government and Japanese government agency bonds 7,927,707 344,034 — 8,271,741 Japanese prefectural and municipal bonds — 132,097 — 132,097 Foreign government and official institution bonds 7,606,345 471,163 1,711 8,079,219 Corporate bonds 3,198 2,664,869 683 2,668,750 Residential mortgage-backed securities — 6,792,386 — 6,792,386 Commercial mortgage-backed securities — 7,402 — 7,402 Asset-backed securities — 1,210,875 315,231 1,526,106 Other debt securities — — 313,166 313,166 Commercial paper — 1,271,921 — 1,271,921 Equity securities (2) 1,633,726 1,103,907 167,206 2,904,839 Trading derivative assets 201,860 10,204,531 115,040 10,521,431 Interest rate contracts 121,584 5,268,790 54,309 5,444,683 Foreign exchange contracts 2,514 4,788,739 9,560 4,800,813 Equity contracts 77,762 47,207 25,979 150,948 Commodity contracts — 88 21,984 22,072 Credit derivatives — 99,707 2,808 102,515 Other (8) — — 400 400 Investment securities: Available-for-sale debt securities 32,672,696 12,912,810 212,936 45,798,442 Japanese national government and Japanese government agency bonds 30,989,319 3,338,445 — 34,327,764 Japanese prefectural and municipal bonds — 4,146,144 — 4,146,144 Foreign government and official institution bonds 1,683,377 936,076 11,890 2,631,343 Corporate bonds — 1,087,059 3,089 1,090,148 Residential mortgage-backed securities — 900,392 15 900,407 Asset-backed securities — 1,464,041 124,379 1,588,420 Other debt securities — 30,016 73,563 103,579 Commercial paper — 1,010,637 — 1,010,637 Equity securities 4,834,102 152,041 55,883 5,042,026 Marketable equity securities 4,834,102 152,041 — 4,986,143 Nonmarketable equity securities (4) — — 55,883 55,883 Other (5) 1,434,046 38,574 4,912 1,477,532 Assets held for sale 421,450 2,791,372 78,521 3,291,343 Investment securities 409,618 2,713,377 65,262 3,188,257 Other 11,832 77,995 13,259 103,086 Total ¥ 56,735,130 ¥ 40,097,982 ¥ 1,265,289 ¥ 98,098,401 At March 31, 2022 Level 1 Level 2 Level 3 Fair Value (in millions) Liabilities Trading account liabilities: Trading securities sold, not yet purchased ¥ 57,371 ¥ 2,455 ¥ — ¥ 59,826 Trading derivative liabilities 217,570 10,697,699 43,951 10,959,220 Interest rate contracts 19,841 5,615,033 16,816 5,651,690 Foreign exchange contracts 4,017 4,901,054 2,097 4,907,168 Equity contracts 193,712 80,806 2,559 277,077 Commodity contracts — — 22,029 22,029 Credit derivatives — 100,806 79 100,885 Other (8) — — 371 371 Obligation to return securities received as collateral (6) 6,670,482 155,733 — 6,826,215 Other (7) — 525,135 16,463 541,598 Liabilities held for sale 852 50,744 1,603 53,199 Other 852 50,744 1,603 53,199 Total ¥ 6,946,275 ¥ 11,431,766 ¥ 62,017 ¥ 18,440,058 At March 31, 2023 Level 1 Level 2 Level 3 Fair Value (in millions) Assets Trading account assets: Trading securities (1) ¥ 19,098,208 ¥ 12,746,415 ¥ 1,182,319 ¥ 33,026,942 Debt securities Japanese national government and Japanese government agency bonds 6,092,523 329,502 — 6,422,025 Japanese prefectural and municipal bonds — 279,168 — 279,168 Foreign government and official institution bonds 11,760,274 493,691 1,168 12,255,133 Corporate bonds 3,965 2,252,424 — 2,256,389 Residential mortgage-backed securities — 4,978,709 — 4,978,709 Commercial mortgage-backed securities — 4,627 — 4,627 Asset-backed securities — 1,210,381 668,911 1,879,292 Other debt securities — — 334,124 334,124 Commercial paper — 1,931,569 — 1,931,569 Equity securities (2) 1,241,446 1,266,344 178,116 2,685,906 Trading derivative assets 84,406 12,674,978 142,343 12,901,727 Interest rate contracts 40,013 7,311,689 93,833 7,445,535 Foreign exchange contracts 3,909 5,258,511 13,714 5,276,134 Equity contracts 40,484 28,617 20,659 89,760 Commodity contracts — 17 9,908 9,925 Credit derivatives — 76,144 3,801 79,945 Other (8) — — 428 428 Trading loans (3) — 13,820 — 13,820 Investment securities: Available-for-sale debt securities 25,236,359 10,250,511 253,932 35,740,802 Japanese national government and Japanese government agency bonds 23,292,055 2,754,548 — 26,046,603 Japanese prefectural and municipal bonds — 2,759,941 — 2,759,941 Foreign government and official institution bonds 1,944,304 978,438 — 2,922,742 Corporate bonds — 1,056,191 1,970 1,058,161 Residential mortgage-backed securities — 1,110,239 15 1,110,254 Asset-backed securities — 1,247,377 182,938 1,430,315 Other debt securities — 343,777 69,009 412,786 Equity securities 4,362,017 101,576 74,761 4,538,354 Marketable equity securities 4,362,017 101,576 — 4,463,593 Nonmarketable equity securities (4) — — 74,761 74,761 Other (5) 1,535,446 848,596 92,251 2,476,293 Total ¥ 50,316,436 ¥ 36,635,896 ¥ 1,745,606 ¥ 88,697,938 At March 31, 2023 Level 1 Level 2 Level 3 Fair Value (in millions) Liabilities Trading account liabilities: Trading securities sold, not yet purchased ¥ 232,287 ¥ 2,620 ¥ — ¥ 234,907 Trading derivative liabilities 163,129 13,718,992 61,247 13,943,368 Interest rate contracts 85,641 8,566,043 45,204 8,696,888 Foreign exchange contracts 1,679 5,013,909 2,369 5,017,957 Equity contracts 75,809 48,953 3,731 128,493 Commodity contracts — — 9,817 9,817 Credit derivatives — 90,087 62 90,149 Other (8) — — 64 64 Obligation to return securities received as collateral (6) 6,664,578 158,763 68,204 6,891,545 Other (7) — 313,482 73,663 387,145 Total ¥ 7,059,994 ¥ 14,193,857 ¥ 203,114 ¥ 21,456,965 Notes: (1) Includes securities measured under the fair value option. (2) Excludes certain investments valued at net asset value of private equity funds whose fair values were ¥179,278 million and ¥225,972 million at March 31, 2022 and 2023, respectively. The amounts of unfunded commitments related to these private equity funds were ¥110,360 million and ¥172,562 million at March 31, 2022 and 2023, respectively. (3) Includes loans measured under the fair value option. (4) Excludes certain investments valued at net asset value of real estate funds and private equity and other funds whose fair values at March 31, 2022 were ¥30,142 million and ¥39,462 million, respectively, and those at March 31, 2023 were ¥29,308 million and ¥51,458 million, respectively. The amounts of unfunded commitments related to these real estate funds and private equity and other funds at March 31, 2022 were ¥1,011 million and nil, respectively, and those at March 31, 2023 were ¥1,305 million and nil, respectively. (5) Mainly comprises securities received as collateral that may be sold or repledged under securities lending transactions. (6) Included in Other liabilities. (7) Mainly includes other short-term borrowings, long-term debt, bifurcated embedded derivatives carried at fair value.
Reconciliation of Assets and Liabilities Measured at Fair Value on Recurring Basis Using Level 3 Inputs	Accordingly, the gains and losses in the tables below include changes in fair value due in part to observable inputs used in the valuation techniques. March 31, 2021 Total gains (losses) for the period March 31, 2022 Change in Included Included Purchases Issues Sales Settlements Transfers into Level 3 (10) Transfers out of Level 3 (10) (in millions) Assets Trading account assets: Trading securities (1) ¥ 756,413 ¥ 41,919 (2) ¥ — ¥ 458,395 ¥ — ¥ (197,245) ¥ (262,150) ¥ 665 ¥ — ¥ 797,997 ¥ 40,113 (2) Debt securities Foreign government and official institution bonds 1,280 287 — 31,591 — (31,432) (15) — — 1,711 47 Corporate bonds 77 (68) — 126 — (100) — 648 — 683 (69) Residential mortgage-backed securities 1,000 (2) — 97,197 — (98,176) (19) — — — — Asset-backed securities 336,811 26,692 — 270,974 — (67,500) (251,746) — — 315,231 27,693 Other debt securities 277,635 14,179 — 21,352 — — — — — 313,166 14,179 Equity securities 139,610 831 — 37,155 — (37) (10,370) 17 — 167,206 (1,737) Trading derivatives—net 25,027 23,754 (2) 1,882 51 (674) — (16,312) 41,076 (3,715) 71,089 46,149 (2) Interest rate contracts—net 14,179 (25,977) 824 — — — 9,696 39,609 (5) (838) 37,493 4,410 Foreign exchange contracts—net 7,283 2,403 206 21 — — 1,833 1,467 (5,750) 7,463 (1,640) Equity contracts—net 623 46,579 858 30 — — (27,543) — 2,873 23,420 42,546 Commodity contracts—net (63) 30 (6) — — — (6) — — (45) 30 Credit derivatives—net 2,271 750 — — — — (292) — — 2,729 819 Other—net (9) 734 (31) — — (674) — — — — 29 (16) Investment securities: Available-for-sale debt securities 289,616 277 (3) 25,143 236,786 — — (287,747) 15,651 (66,790) 212,936 12,545 (3) Foreign government and official institution bonds 16,718 — 607 5,163 — — (5,964) — (4,634) 11,890 87 Corporate bonds 162 (328) 68 557 — — (114) 2,854 (110) 3,089 (265) Residential mortgage-backed securities 15 — — — — — — — — 15 — Commercial mortgage-backed securities 1,599 — 104 — — — (524) — (1,179) — — Asset-backed securities 136,920 580 14,066 231,039 — — (258,226) — — 124,379 6,651 Other debt securities 134,202 25 10,298 27 — — (22,919) 12,797 (8) (60,867) 73,563 6,072 Equity securities 45,569 5,856 (3) — 9,899 — (3,113) — 130 (2,458) 55,883 3,960 (3) Nonmarketable equity securities 45,569 5,856 — 9,899 — (3,113) — 130 (2,458) 55,883 3,960 Other 18,784 (402) (7) 1,049 2,369 — (4,612) (202) — (12,074) 4,912 1,245 (7) Assets held for sale — (2,589) (11) 4,234 770 — — (4,247) 78,750 — 76,918 1,461 (11) Investment securities — (963) 3,791 1 — — (4,247) 66,680 — 65,262 5,737 Other — (1,626) 443 769 — — — 12,070 — 11,656 (4,276) Total ¥ 1,135,409 ¥ 68,815 ¥ 32,308 ¥ 708,270 ¥ (674) ¥ (204,970) ¥ (570,658) ¥ 136,272 ¥ (85,037) ¥ 1,219,735 ¥ 105,473 Liabilities Other ¥ (2,212) ¥ 8,315 (4) ¥ (3,080) ¥ — ¥ 36,535 ¥ — ¥ (19,361) ¥ 5,364 (6) ¥ 1,372 (6) ¥ 16,463 ¥ 15,532 (4) Total ¥ (2,212) ¥ 8,315 ¥ (3,080) ¥ — ¥ 36,535 ¥ — ¥ (19,361) ¥ 5,364 ¥ 1,372 ¥ 16,463 ¥ 15,532 March 31, 2022 Total gains (losses) for the period Purchases Issues Sales Settlements Transfers Transfers March 31, 2023 Change in Included in earnings and retained earnings (12) Included (in millions) Assets Trading account assets: Trading securities (1) ¥ 797,997 ¥ 50,044 (2) ¥ — ¥ 387,100 ¥ — ¥ (21,409) ¥ (30,468) ¥ — ¥ (945) ¥ 1,182,319 ¥ 43,990 (2) Debt securities Foreign government and official institution bonds 1,711 16 — 5,718 — (5,765) (250) — (262) 1,168 (35) Corporate bonds 683 — — — — — — — (683) — — Asset-backed securities 315,231 17,132 — 354,978 — (15,636) (2,794) — — 668,911 15,749 Other debt securities 313,166 21,297 — 8,128 — — (8,467) — — 334,124 20,646 Equity securities 167,206 11,599 — 18,276 — (8) (18,957) — — 178,116 7,630 Trading derivatives—net 71,089 (2,045) (2) 1,138 612 (334) — (17,198) 55,211 (27,377) 81,096 45,862 (2) Interest rate contracts—net 37,493 (27,947) 297 — — — 10,932 55,243 (5) (27,389) (5) 48,629 10,779 Foreign exchange contracts—net 7,463 8,210 86 — — — (4,484) (32) 102 11,345 7,877 Equity contracts—net 23,420 16,190 758 19 — — (23,369) — (90) 16,928 25,646 Commodity contracts—net (45) 153 (3) — — — (14) — — 91 153 Credit derivatives—net 2,729 1,273 — — — — (263) — — 3,739 1,303 Other—net (9) 29 76 — 593 (334) — — — — 364 104 Investment securities: Available-for-sale debt securities 212,936 (1,303) (3) 16,357 301,283 — — (272,638) 1,405 (4,108) 253,932 2,094 (3) Foreign government and official institution bonds 11,890 — (925) 128 — — (11,093) — — — — Corporate bonds 3,089 (164) 142 1,823 — — (67) 1,255 (4,108) 1,970 147 Residential mortgage-backed securities 15 — — — — — — — — 15 — Asset-backed securities 124,379 (1,174) 14,406 296,645 — — (251,318) — — 182,938 (823) Other debt securities 73,563 35 2,734 2,687 — — (10,160) 150 — 69,009 2,770 Equity securities 55,883 712 (3) 345 18,963 — (2,682) (806) 3,411 (1,065) 74,761 161 (3) Nonmarketable equity securities 55,883 712 345 18,963 — (2,682) (806) 3,411 (1,065) 74,761 161 Other 4,912 61 (7) (21) 90,986 — — (5,612) 1,925 — 92,251 61 (7) Assets held for sale 76,918 992 (11) 9,263 1,620 — (77,390) (11,403) — — — — Investment securities 65,262 (3,619) 7,156 297 — (56,292) (12,804) — — — — Other 11,656 4,611 2,107 1,323 — (21,098) 1,401 — — — — Total ¥ 1,219,735 ¥ 48,461 ¥ 27,082 ¥ 800,564 ¥ (334) ¥ (101,481) ¥ (338,125) ¥ 61,952 ¥ (33,495) ¥ 1,684,359 ¥ 92,168 Liabilities Obligation to return securities received as collateral ¥ — ¥ — ¥ — ¥ — ¥ 73,595 ¥ — ¥ (5,391) ¥ — ¥ — ¥ 68,204 ¥ — Other 16,463 35,755 (4) (3,879) — 53,887 — (36,792) 72,173 (6) (192) 73,663 43,066 (4) Total ¥ 16,463 ¥ 35,755 ¥ (3,879) ¥ — ¥ 127,482 ¥ — ¥ (42,183) ¥ 72,173 ¥ (192) ¥ 141,867 ¥ 43,066 Notes: (1) Includes Trading securities measured under the fair value option. (2) Included in Trading account losses—net Foreign exchange gains—net (3) Included in Investment securities gains (losses)—net and Other comprehensive income—net (4) Included in Trading account losses—net and Other comprehensive income—net. (5) Transfers into (out of) Level 3 for Interest rate contracts—net were mainly caused by changes in the impact of unobservable input to the entire fair value measurement. Unobservable input includes loss given default. (6) Transfers into (out of) Level 3 for long-term debt in Other were mainly caused by the decrease (increase) in the observability of the key inputs to the valuation models and a corresponding increase (decrease) in the significance of the unobservable inputs. (7) Included in Fees and commissions income and Other non-interest income. (8) Transfers relate to the reclassification of certain securities. (9) Includes certain derivatives such as earthquake derivatives. (10) Includes the reclassification of assets and liabilities in transferred business of MUFG Union Bank to assets and liabilities held for sale. (11) Included in Investment securities gains (losses)—net, Trading account losses—net, Fees and commissions income and Other comprehensive income—net. (12) Included the profits and losses recognized in three months before the sale of MUFG Union Bank which were reclassified to retained earnings.
Quantitative Information about Level 3 Fair Value Measurements	The following tables present information on the valuation techniques, significant unobservable inputs and their ranges for each major category of assets and liabilities measured at fair value on a recurring basis and classified in Level 3: At March 31, 2022 Fair value (1) Valuation technique Significant unobservable inputs Range Weighted average (2) (in millions) Assets Trading securities, Investment securities and Other assets: Foreign government and official institution bonds ¥ 17,297 Return on equity method Probability of default 0.2%~1.8% 0.5% Recovery rate 35.0%~70.0% 64.4% Market-required return on capital 10.0% 10.0% Residential mortgage-backed securities, Commercial mortgage-backed securities and Asset-backed securities 98,325 Discounted cash flow Recovery rate 100.0% 100.0% 238,864 Internal model (4) Asset correlations 3.0% 3.0% Discount factor 0.6%~1.0% 0.9% Prepayment rate 29.0% 29.0% Probability of default 0.0%~85.4% — (3) Recovery rate 69.9% 69.9% Other debt securities 369,445 Discounted cash flow Liquidity premium 0.9%~3.2% 2.8% 58,677 Return on equity method Probability of default 0.1%~8.0% 0.4% Recovery rate 60.0%~90.0% 82.7% Market-required return on capital 8.0%~10.0% 9.9% At March 31, 2022 Fair value (1) Valuation technique Significant unobservable inputs Range Median (2) (in millions) Trading derivatives—net: Interest rate contracts—net 35,195 Option model Correlation between interest rates 30.0%~62.9% 45.6% Correlation between interest rate and foreign exchange rate 15.3%~60.0% 41.0% Volatility 0.0%~100.0% 61.9% Foreign exchange contracts—net 7,463 Option model Correlation between interest rates 10.0%~70.0% 51.5% Correlation between interest rate and foreign exchange rate 0.0%~60.0% 37.4% Correlation between foreign exchange rates 50.0%~70.6% 66.4% Volatility 9.0%~21.7% 13.3% Equity contracts—net 772 Option model Correlation between foreign exchange rate and equity (58.4)%~55.0% 23.1% Correlation between equities 2.4%~95.0% 51.4% Volatility 26.0%~38.0% 31.8% 22,648 Discounted cash flow Term of litigation 1.8 years 1.8 years At March 31, 2023 Fair value (1) Valuation technique Significant unobservable inputs Range Weighted average (2) (in millions) Assets Trading securities and Investment securities: Residential mortgage-backed securities and Asset-backed securities ¥ 101,014 Discounted cash flow Recovery rate 100.0% 100.0% 591,515 Internal model (4) Asset correlations 3.0% 3.0% Discount factor 2.0%~2.3% 2.0% Prepayment rate 13.1% 13.1% Probability of default 0.0%~99.0% — (3) Recovery rate 72.2% 72.2% Other debt securities 385,046 Discounted cash flow Liquidity premium 0.9%~3.2% 2.8% At March 31, 2023 Fair value (1) Valuation technique Significant unobservable inputs Range Median (2) (in millions) Trading derivatives—net: Interest rate contracts—net 48,209 Option model Correlation between interest rates 30.0%~60.6% 44.4% Correlation between interest rate and foreign exchange rate 2.0%~60.0% 36.6% Volatility 70.3%~106.7% 80.1% Foreign exchange contracts—net 11,345 Option model Correlation between interest rates 30.0%~70.0% 50.6% Correlation between interest rate and foreign exchange rate 14.3%~60.0% 36.8% Correlation between foreign exchange rates 50.0%~70.6% 66.4% Volatility 10.6%~23.0% 15.6% Equity contracts—net 3,316 Option model Correlation between foreign exchange rate and equity (58.4)%~55.0% 15.0% Correlation between equities 5.6%~95.0% 54.1% Volatility 28.0%~37.0% 32.2% 13,612 Discounted cash flow Term of litigation 0.1 years~1.0 year 0.5 years Notes: (1) The fair value as of March 31, 2022 and 2023 excludes the fair value of investments valued using vendor prices. (2) Weighted average is calculated by weighing each input by the relative fair value of the respective financial instruments for investment securities. Median is used for derivative instruments. (3) See “Probability of default” in “Changes in and range of unobservable inputs.” (4) For further detail of Internal model, refer to the last paragraph of “Trading Account Assets and Liabilities—Trading Account Securities.”
Carrying Value of Assets Measured at Fair Value on Nonrecurring Basis by Level	The following table presents the carrying value of assets measured at fair value on a nonrecurring basis by level within the fair value hierarchy as of March 31, 2022 and 2023: 2022 2023 Level 1 Level 2 Level 3 Total carrying value Level 1 Level 2 Level 3 Total carrying value (in millions) Assets (3) Investment securities (1)(2) ¥ — ¥ 9,839 ¥ 11,158 ¥ 20,997 ¥ — ¥ 13,366 ¥ 13,271 ¥ 26,637 Loans 2,175 3,153 236,622 241,950 1,917 3,388 611,055 616,360 Loans held for sale — — 42,994 42,994 — — 439,361 439,361 Collateral dependent loans 2,175 3,153 193,628 198,956 1,917 3,388 171,694 176,999 Premises and equipment — — 17,301 17,301 — — 11,835 11,835 Intangible assets — — 359 359 — — 309 309 Goodwill — — — — — — 184,364 184,364 Other assets 11,880 — 17,282 29,162 178,592 — 29,003 207,595 Investments in equity method investees (1) 11,880 — 1,035 12,915 178,592 — 12,472 191,064 Other — — 16,247 16,247 — — 16,531 16,531 Assets held for sale — — 255,002 255,002 — — — — Loans held for sale — — 255,002 255,002 — — — — Total ¥ 14,055 ¥ 12,992 ¥ 537,724 ¥ 564,771 ¥ 180,509 ¥ 16,754 ¥ 849,837 ¥ 1,047,100 Notes: (1) Excludes certain investments valued at net asset value of ¥26,644 million and ¥33,595 million at March 31, 2022 and 2023, respectively. The unfunded commitments related to these investments are ¥22,197 million and ¥23,029 million at March 31, 2022 and 2023, respectively. These investments are in private equity funds. (2) Includes certain nonmarketable equity securities that are measured at fair value on a nonrecurring basis, including impairment and observable price change for nonmarketable equity securities measured under the measurement alternative. (3) In addition to the above table, the assets and liabilities of MUFG Union Bank, which were transferred to U.S. Bancorp, were reclassified as held for sale. As a result, the disposal group was measured at fair value less expected costs to sell which was lower than its carrying amount. The amount of the fair value is ¥1,992,632 million as of March 31, 2022 and classified in Level 3 based on the transaction's expected consideration.
Losses (Gains) Recorded as a Result of Changes in Fair Value Measured on a Nonrecurring Basis	The following table presents losses (gains) recorded as a result of changes in the fair value of assets measured at fair value on a nonrecurring basis for the fiscal years ended March 31, 2022 and 2023: 2022 2023 (2) (in millions) Investment securities ¥ 1,232 ¥ 3,580 Loans 30,638 73,282 Loans held for sale 1,893 32,146 Collateral dependent loans 28,745 41,136 Premises and equipment 5,701 5,293 Intangible assets 10,412 3,650 Goodwill — 33,553 Other assets 27,268 74,470 Investments in equity method investees 6,949 58,061 Other 20,319 16,409 Assets held for sale 3,165 282,540 Loans held for sale 3,165 282,540 Total (1) ¥ 78,416 ¥ 476,368 Notes: (1) In addition to the above table, the assets and liabilities of MUFG Union Bank, which were transferred to U.S. Bancorp, were reclassified as held for sale. As a result, the disposal group was measured at fair value less expected costs to sell which was lower than its carrying amount. The impairment of assets held for sale was ¥134,141 million for the fiscal year ended March 31, 2022. See Note 2 for further information. (2) The profits and losses which were recognized in the three months before the sale of MUFG Union Bank were reclassified to retained earnings.
Gains (Losses) Related to Instruments for which Fair Value Option was Elected	The following table presents the gains or losses recorded for the fiscal years ended March 31, 2021, 2022 and 2023 related to the eligible instruments for which the MUFG Group elected the fair value option: 2021 2022 2023 Trading account profits (losses) Foreign exchange gains (losses) Total changes in fair value Trading account profits (losses) Foreign exchange gains (losses) Total changes in fair value Trading account profits (losses) Foreign exchange gains (losses) Total changes in fair value (in millions) Financial assets: Trading account securities ¥ (370,238) ¥ 723,505 ¥ 353,267 ¥ (984,605) ¥ 1,752,995 ¥ 768,390 ¥ (1,180,311) ¥ 1,369,071 ¥ 188,760 Total ¥ (370,238) ¥ 723,505 ¥ 353,267 ¥ (984,605) ¥ 1,752,995 ¥ 768,390 ¥ (1,180,311) ¥ 1,369,071 ¥ 188,760 Financial liabilities: Other short-term borrowings (1) ¥ (6,484) ¥ — ¥ (6,484) ¥ 5,552 ¥ — ¥ 5,552 ¥ (3,626) ¥ — ¥ (3,626) Long-term debt (1) 1,523 — 1,523 50,082 — 50,082 40,944 — 40,944 Total ¥ (4,961) ¥ — ¥ (4,961) ¥ 55,634 ¥ — ¥ 55,634 ¥ 37,318 ¥ — ¥ 37,318 Note:
Differences between Aggregate Fair Value and Aggregate Remaining Contractual Principal Balance Outstanding	The following table presents the differences between the aggregate fair value and the aggregate remaining contractual principal balance outstanding as of March 31, 2022 and 2023 for long-term debt instruments for which the fair value option has been elected: 2022 2023 Remaining aggregate contractual amounts outstanding Fair value Fair value over (under) remaining aggregate contractual amounts outstanding Remaining aggregate contractual amounts outstanding Fair value Fair value over (under) remaining aggregate contractual amounts outstanding (in millions) Financial liabilities: Long-term debt ¥ 511,851 ¥ 483,051 ¥ (28,800) ¥ 501,982 ¥ 431,338 ¥ (70,644) Total ¥ 511,851 ¥ 483,051 ¥ (28,800) ¥ 501,982 ¥ 431,338 ¥ (70,644)
Summary of Carrying Amounts and Estimated Fair Values of Financial Instruments Not Carried at Fair Value on a Recurring Basis on Consolidated Balance Sheets by Level	The following is a summary of carrying amounts and estimated fair values by level within the fair value hierarchy of financial instruments which are not carried at fair value on a recurring basis in the accompanying consolidated balance sheets as of March 31, 2022 and 2023: Carrying amount Estimated fair value At March 31, 2022 Total Level 1 Level 2 Level 3 (in billions) Financial assets: Cash and due from banks ¥ 50,972 ¥ 50,972 ¥ 50,972 ¥ — ¥ — Interest-earning deposits in other banks 58,848 58,848 — 58,848 — Call loans and funds sold 1,316 1,316 — 1,316 — Receivables under resale agreements 12,503 12,503 — 12,503 — Receivables under securities borrowing transactions 4,496 4,496 — 4,496 — Investment securities 4,595 4,606 1,758 460 2,388 Loans, net of allowance for credit losses (1) 111,669 112,391 2 245 112,144 Other financial assets (2) 9,207 9,207 — 9,207 — Financial liabilities: Deposits Non-interest-bearing ¥ 36,496 ¥ 36,496 ¥ — ¥ 36,496 ¥ — Interest-bearing 188,112 188,080 — 188,080 — Total deposits 224,608 224,576 — 224,576 — Call money and funds purchased 2,416 2,416 — 2,416 — Payables under repurchase agreements 27,726 27,726 — 27,726 — Payables under securities lending transactions 1,022 1,022 — 1,022 — Due to trust account and other short-term borrowings 22,728 22,728 — 22,728 — Long-term debt 34,245 33,974 — 33,974 — Other financial liabilities 7,560 7,560 — 7,560 — Carrying amount Estimated fair value At March 31, 2023 Total Level 1 Level 2 Level 3 (in billions) Financial assets: Cash and due from banks ¥ 60,051 ¥ 60,051 ¥ 60,051 ¥ — ¥ — Interest-earning deposits in other banks 53,990 53,990 — 53,990 — Call loans and funds sold 1,802 1,802 — 1,802 — Receivables under resale agreements 14,059 14,059 — 14,059 — Receivables under securities borrowing transactions 4,556 4,556 — 4,556 — Investment securities 21,520 21,386 13,527 5,354 2,505 Loans, net of allowance for credit losses (1) 118,679 118,933 2 263 118,668 Other financial assets (2) 10,108 10,108 — 10,108 — Financial liabilities: Deposits Non-interest-bearing ¥ 37,804 ¥ 37,804 ¥ — ¥ 37,804 ¥ — Interest-bearing 197,500 197,573 — 197,573 — Total deposits 235,304 235,377 — 235,377 — Call money and funds purchased 3,438 3,438 — 3,438 — Payables under repurchase agreements 40,132 40,132 — 40,132 — Payables under securities lending transactions 1,138 1,138 — 1,138 — Due to trust account and other short-term borrowings 14,260 14,260 — 14,260 — Long-term debt 38,704 37,928 — 37,928 — Other financial liabilities 9,595 9,595 — 9,595 — Notes: (1) Includes loans held for sale and collateral dependent loans measured at fair value on a nonrecurring basis. Refer to “Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis” for the details of the level classification.

Parent Company Only Financial_2

Parent Company Only Financial Information (Tables)	12 Months Ended
	Mar. 31, 2023
Condensed Financial Information Disclosure [Abstract]
Condensed Balance Sheets	The following table presents the parent company only financial information of MUFG: Condensed Balance Sheets As of March 31, 2022 2023 (in millions) Assets: Cash and interest-earning deposits with banking subsidiaries ¥ 231,389 ¥ 173,603 Investments in subsidiaries and affiliated companies 16,504,756 16,834,133 Banking subsidiaries 11,731,745 11,893,171 Non-banking subsidiaries and affiliated companies 4,773,011 4,940,962 Loans to subsidiaries 10,062,030 12,841,655 Banking subsidiaries 9,516,847 12,225,477 Non-banking subsidiaries 545,183 616,178 Other assets 266,773 229,005 Total assets ¥ 27,064,948 ¥ 30,078,396 Liabilities and Shareholders’ equity: Short-term borrowings from banking subsidiaries ¥ 1,146,147 ¥ 1,291,660 Long-term debt from non-banking subsidiaries and affiliated companies 24,535 15,591 Long-term debt 10,055,876 12,792,670 Other liabilities 233,322 215,129 Total liabilities 11,459,880 14,315,050 Total shareholders’ equity 15,605,068 15,763,346 Total liabilities and shareholders’ equity ¥ 27,064,948 ¥ 30,078,396
Condensed Statements of Income	Condensed Statements of Operations Fiscal years ended March 31, 2021 2022 2023 (in millions) Income: Dividends from subsidiaries and affiliated companies ¥ 404,064 ¥ 586,108 ¥ 605,115 Banking subsidiaries 317,453 419,691 407,630 Non-banking subsidiaries and affiliated companies 86,611 166,417 197,485 Management fees from subsidiaries 35,095 34,957 35,052 Interest income from subsidiaries 174,816 183,679 273,536 Foreign exchange gains—net 1,089 6,851 3,465 Trading account profits (losses)—net (18,285) (4,059) 28,970 Gains on sales of investment in subsidiaries and affiliated companies—net 95 — 17,748 Other income 12,552 11,732 13,255 Total income 609,426 819,268 977,141 Expense: Operating expenses 37,567 40,158 44,149 Interest expense to subsidiaries and affiliated companies 11,415 12,256 15,442 Interest expense 159,057 167,057 256,333 Other expense 8,164 7,154 6,496 Total expense 216,203 226,625 322,420 Equity in undistributed net income (loss) of subsidiaries and affiliated companies—net 727,257 (667,088) (35,857) Income (loss) before income tax expense 1,120,480 (74,445) 618,864 Income tax expense 3,182 8,875 18,956 Net income (loss) ¥ 1,117,298 ¥ (83,320) ¥ 599,908
Condensed Statements of Cash Flows	Condensed Statements of Cash Flows Fiscal years ended March 31, 2021 2022 2023 (in millions) Operating activities: Net income (loss) ¥ 1,117,298 ¥ (83,320) ¥ 599,908 Adjustments and other (568,317) 653,768 9,733 Net cash provided by operating activities 548,981 570,448 609,641 Investing activities: Proceeds from sales of investment in subsidiaries and affiliated companies 35,081 136 41,125 Purchase of equity investment in subsidiaries and an affiliated company — (1,000) — Net increase in loans to subsidiaries (462,208) (257,619) (2,204,831) Other—net (11,531) (9,413) (7,791) Net cash used in investing activities (438,658) (267,896) (2,171,497) Financing activities: Net increase (decrease) in short-term borrowings from subsidiaries (49,058) (61,415) 145,513 Proceeds from issuance of long-term debt 831,121 1,625,173 3,833,878 Repayment of long-term debt (514,436) (1,369,254) (1,630,695) Repayment of long-term debt to affiliated companies (10,500) — — Proceeds from sales of treasury stock 1 — — Payments for acquisition of treasury stock (13) (150,017) (450,019) Dividends paid (321,772) (334,620) (380,447) Other—net (1,954) (10,410) (14,160) Net cash provided by (used in) financing activities (66,611) (300,543) 1,504,070 Net increase (decrease) in cash and cash equivalents 43,712 2,009 (57,786) Cash and cash equivalents at beginning of fiscal year 185,668 229,380 231,389 Cash and cash equivalents at end of fiscal year ¥ 229,380 ¥ 231,389 ¥ 173,603

Basis of Financial Statements_4

Basis of Financial Statements and Summary of Significant Accounting Policies (Narrative) (Detail) - JPY (¥) ¥ in Millions	3 Months Ended			12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2023	Mar. 31, 2020
Basis of financial statements:
Increase (decrease) to net income attributable to Mitsubishi UFJ Financial Group not recognized for the fiscal year	¥ (16,600)	¥ 60,640	¥ (157,320)
Summary of significant accounting policies:
Floor percentage of the corridor defined for the amortization of net actuarial gains and losses				10%
Financing receivable, allowance for credit loss	1,272,898	1,470,701	1,348,391	¥ 1,272,898	¥ 809,540
Equity, including portion attributable to noncontrolling interest	(16,466,167)	(16,296,522)	(16,244,554)	(16,466,167)
Unappropriated retained earnings
Summary of significant accounting policies:
Equity, including portion attributable to noncontrolling interest	(8,169,710)	(8,172,646)	(8,589,900)	(8,169,710)	(8,079,530)
Revision of Prior Period, Accounting Standards Update, Adjustment | Effect of adopting new guidance on measurement of credit losses on financial instruments | Unappropriated retained earnings
Summary of significant accounting policies:
Equity, including portion attributable to noncontrolling interest	0	0	285,838	¥ 0
Minimum
Summary of significant accounting policies:
Threshold of "more likely than not" recognition for a tax position				50%
Commercial
Summary of significant accounting policies:
Financing receivable, allowance for credit loss	719,589	934,086	734,577	¥ 719,589	482,275
Commercial | Forecast
Summary of significant accounting policies:
Period for determining allowances for credit losses, in year				3 years
Commercial | Average historic loss
Summary of significant accounting policies:
Period for determining allowances for credit losses, in year				2 years
Commercial | Minimum
Summary of significant accounting policies:
Loans contractually past due before being placed on nonaccrual status, in month				1 month
Card
Summary of significant accounting policies:
Financing receivable, allowance for credit loss	42,469	40,768	44,217	¥ 42,469	35,180
Card | Forecast
Summary of significant accounting policies:
Period for determining allowances for credit losses, in year				3 years
Card | Minimum
Summary of significant accounting policies:
Loans contractually past due before being placed on nonaccrual status, in month				3 months
MUAH
Summary of significant accounting policies:
Financing receivable, allowance for credit loss	3,428	30,365	131,755	¥ 3,428	58,995
MUAH | Minimum
Summary of significant accounting policies:
Loans contractually past due before being placed on nonaccrual status, in month				3 months
Krungsri
Summary of significant accounting policies:
Financing receivable, allowance for credit loss	358,031	322,386	293,396	¥ 358,031	169,626
Krungsri | Minimum
Summary of significant accounting policies:
Loans contractually past due before being placed on nonaccrual status, in month				3 months
Residential
Summary of significant accounting policies:
Financing receivable, allowance for credit loss	¥ 59,747	¥ 69,887	¥ 82,893	¥ 59,747	¥ 34,746
Residential | Forecast
Summary of significant accounting policies:
Period for determining allowances for credit losses, in year				3 years
Residential | Average historic loss
Summary of significant accounting policies:
Period for determining allowances for credit losses, in year				2 years
Residential | Minimum
Summary of significant accounting policies:
Loans contractually past due before being placed on nonaccrual status, in month				6 months

Basis of Financial Statements_5

Basis of Financial Statements and Summary of Significant Accounting Policies (Estimated Useful Lives of Premises and Equipment) (Detail)	12 Months Ended
	Mar. 31, 2023
Buildings | Minimum
Property, Plant and Equipment [Line Items]
Premises and equipment, Useful life, years	15 years
Buildings | Maximum
Property, Plant and Equipment [Line Items]
Premises and equipment, Useful life, years	50 years
Equipment and furniture | Minimum
Property, Plant and Equipment [Line Items]
Premises and equipment, Useful life, years	2 years
Equipment and furniture | Maximum
Property, Plant and Equipment [Line Items]
Premises and equipment, Useful life, years	20 years
Leasehold improvements | Minimum
Property, Plant and Equipment [Line Items]
Premises and equipment, Useful life, years	2 years
Leasehold improvements | Maximum
Property, Plant and Equipment [Line Items]
Premises and equipment, Useful life, years	39 years

Basis of Financial Statements_6

Basis of Financial Statements and Summary of Significant Accounting Policies (Useful Lives of Intangible Assets and Amortization Method by Major Class) (Detail)	12 Months Ended
	Mar. 31, 2023
Software | Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, Useful life, years	3 years
Software | Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, Useful life, years	10 years
Core deposit intangibles | Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, Useful life, years	9 years
Core deposit intangibles | Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, Useful life, years	16 years
Customer relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, Useful life, years	7 years
Customer relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, Useful life, years	27 years
Trade names | Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, Useful life, years	10 years
Trade names | Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, Useful life, years	40 years

Business Developments - MUFG Un

Business Developments - MUFG Union Bank (Details) - Disposal group, disposed of by sale, not discontinued operations - JPY (¥) ¥ in Millions	Mar. 31, 2023	Dec. 01, 2022	Mar. 31, 2022
Assets held for sale:
Total	¥ 0		¥ 11,621,567
Liabilities held for sale:
Other	¥ 0		11,157,660
MUFG Union Bank
Assets held for sale:
Interest-earning deposits in other banks		¥ 2,251,300	1,110,633
Investment securities		3,123,300	3,188,257
Loans, net of allowance for credit losses		7,567,700	6,561,316
Other			761,361
Total		13,935,600	11,621,567
Liabilities held for sale:
Deposits		11,789,900	10,448,481
Other			709,179
Total		¥ 13,128,000	¥ 11,157,660

Business Developments (Narrativ

Business Developments (Narrative) (Detail) - JPY (¥)			12 Months Ended
	Dec. 01, 2022	Nov. 30, 2022	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Business Developments [Line Items]
Gain on sale of MUFG Union Bank			¥ 557,954,000,000	¥ 0	¥ 0
Cash and cash equivalents	¥ 2,433,800,000,000
Net decrease in cash from sale of MUB			(1,711,764,000,000)	0	0
Profit not recognized			223,273,000,000
Comprehensive loss not recognized			(20,291,000,000)
Non-interest bearing note receivable from U.S. Bancorp
Business Developments [Line Items]
Noncash or part noncash divestiture, consideration received			396,601,000,000
Gain (loss) on loans held for sale
Business Developments [Line Items]
Profit not recognized			114,139,000,000
Investment securities gains (losses)
Business Developments [Line Items]
Profit not recognized			143,408,000,000
MUAH | MUFG Union Bank
Business Developments [Line Items]
Dividends paid		¥ 636,800,000,000
U.S. Bancorp
Business Developments [Line Items]
Ownership percentage by NCI	3%
Disposal group, disposed of by sale, not discontinued operations
Business Developments [Line Items]
Assets held for sale			0	11,621,567,000,000
Disposal group, disposed of by sale, not discontinued operations | MUFG Union Bank
Business Developments [Line Items]
Impairment of assets held for sale				134,141,000,000
Proceeds from divestiture of businesses	¥ 754,000,000,000
Contingent consideration receivable			¥ 464,500,000,000
Contingent consideration period			5 years
Gain on sale of MUFG Union Bank	557,954,000,000
Assets held for sale	13,935,600,000,000			11,621,567,000,000
Interest-earning deposits in other banks	2,251,300,000,000			1,110,633,000,000
Investment securities	3,123,300,000,000			3,188,257,000,000
Loans, net of allowance for credit losses	7,567,700,000,000			6,561,316,000,000
Liabilities held for sale	13,128,000,000,000			11,157,660,000,000
Deposits	¥ 11,789,900,000,000			10,448,481,000,000
Loss from discontinued operation before income tax				¥ 506,329,000,000	¥ 11,385,000,000	¥ 52,021,000,000
Disposal group, disposed of by sale, not discontinued operations | MUFG Union Bank | U.S. Bancorp
Business Developments [Line Items]
Noncash proceeds (in shares)	44,374,155

Investment Securities (Amortize

Investment Securities (Amortized Cost, Gross Unrealized Gains (Losses) and Fair Value of Investment Securities) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
Investment Securities [Line Items]
Available-for-sale debt securities, Amortized cost	¥ 35,954,445	¥ 45,854,380
Available-for-sale debt securities, Gross unrealized gains	48,994	146,095
Available-for-sale debt securities, Gross unrealized losses	262,637	202,033
Available-for-sale debt securities, Fair value	35,740,802	45,798,442
Held-to-maturity debt securities, Amortized cost	21,520,081	4,595,109
Held-to-maturity debt securities, Gross unrealized gains	49,238	26,096
Held-to-maturity debt securities, Gross unrealized losses	183,163	14,900
Held-to-maturity debt securities, fair value	21,386,156	4,606,305
Japanese national government and Japanese government agency bonds
Investment Securities [Line Items]
Available-for-sale debt securities, Amortized cost	26,153,862	34,383,131
Available-for-sale debt securities, Gross unrealized gains	16,510	77,144
Available-for-sale debt securities, Gross unrealized losses	123,769	132,511
Available-for-sale debt securities, Fair value	26,046,603	34,327,764
Held-to-maturity debt securities, Amortized cost	13,860,457	1,808,312
Held-to-maturity debt securities, Gross unrealized gains	32,927	13,691
Held-to-maturity debt securities, Gross unrealized losses	19,789	3,633
Held-to-maturity debt securities, fair value	13,873,595	1,818,370
Japanese prefectural and municipal bonds
Investment Securities [Line Items]
Available-for-sale debt securities, Amortized cost	2,773,750	4,154,459
Available-for-sale debt securities, Gross unrealized gains	2,063	6,672
Available-for-sale debt securities, Gross unrealized losses	15,872	14,987
Available-for-sale debt securities, Fair value	2,759,941	4,146,144
Held-to-maturity debt securities, Amortized cost	1,144,825	175,072
Held-to-maturity debt securities, Gross unrealized gains	2,473	4
Held-to-maturity debt securities, Gross unrealized losses	7,808	1,116
Held-to-maturity debt securities, fair value	1,139,490	173,960
Foreign government and official institution bonds
Investment Securities [Line Items]
Available-for-sale debt securities, Amortized cost	3,029,042	2,671,797
Available-for-sale debt securities, Gross unrealized gains	2,072	8,586
Available-for-sale debt securities, Gross unrealized losses	108,372	49,040
Available-for-sale debt securities, Fair value	2,922,742	2,631,343
Corporate bonds
Investment Securities [Line Items]
Available-for-sale debt securities, Amortized cost	1,051,347	1,081,620
Available-for-sale debt securities, Gross unrealized gains	9,791	9,601
Available-for-sale debt securities, Gross unrealized losses	2,977	1,073
Available-for-sale debt securities, Fair value	1,058,161	1,090,148
Held-to-maturity debt securities, Amortized cost	46,730
Held-to-maturity debt securities, Gross unrealized gains	213
Held-to-maturity debt securities, Gross unrealized losses	3
Held-to-maturity debt securities, fair value	46,940
Residential mortgage-backed securities
Investment Securities [Line Items]
Available-for-sale debt securities, Amortized cost	1,110,126	900,799
Available-for-sale debt securities, Gross unrealized gains	569	256
Available-for-sale debt securities, Gross unrealized losses	441	648
Available-for-sale debt securities, Fair value	1,110,254	900,407
Held-to-maturity debt securities, Amortized cost	3,913,346	234,652
Held-to-maturity debt securities, Gross unrealized gains	13,606	49
Held-to-maturity debt securities, Gross unrealized losses	105,754	8,778
Held-to-maturity debt securities, fair value	3,821,198	225,923
Asset-backed securities
Investment Securities [Line Items]
Available-for-sale debt securities, Amortized cost	1,418,563	1,547,098
Available-for-sale debt securities, Gross unrealized gains	16,116	41,544
Available-for-sale debt securities, Gross unrealized losses	4,364	222
Available-for-sale debt securities, Fair value	1,430,315	1,588,420
Held-to-maturity debt securities, Amortized cost	2,554,723	2,377,073
Held-to-maturity debt securities, Gross unrealized gains	19	12,352
Held-to-maturity debt securities, Gross unrealized losses	49,809	1,373
Held-to-maturity debt securities, fair value	2,504,933	2,388,052
Other debt securities
Investment Securities [Line Items]
Available-for-sale debt securities, Amortized cost	417,755	104,869
Available-for-sale debt securities, Gross unrealized gains	1,873	2,243
Available-for-sale debt securities, Gross unrealized losses	6,842	3,533
Available-for-sale debt securities, Fair value	¥ 412,786	103,579
Commercial paper
Investment Securities [Line Items]
Available-for-sale debt securities, Amortized cost		1,010,607
Available-for-sale debt securities, Gross unrealized gains		49
Available-for-sale debt securities, Gross unrealized losses		19
Available-for-sale debt securities, Fair value		¥ 1,010,637

Investment Securities (Amorti_2

Investment Securities (Amortized Cost and Fair Value by Contractual Maturity) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
Held-to-maturity debt securities, Amortized cost:
Due in one year or less	¥ 602,851
Due from one year to five years	9,953,844
Due from five years to ten years	6,143,527
Due after ten years	4,819,859
Held-to-maturity debt securities, Amortized cost	21,520,081	¥ 4,595,109
Held-to-maturity debt securities, Fair value:
Due in one year or less	604,679
Due from one year to five years	9,976,471
Due from five years to ten years	6,101,314
Due after ten years	4,703,692
Held-to-maturity debt securities, Fair value	21,386,156	4,606,305
Available-for-sale debt securities, Fair value:
Due in one year or less	22,126,650
Due from one year to five years	7,917,008
Due from five years to ten years	2,280,186
Due after ten years	3,416,958
Available-for-sale debt securities, Fair value	¥ 35,740,802	¥ 45,798,442

Investment Securities (Narrativ

Investment Securities (Narrative) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Investment Securities [Line Items]
Gross realized gains on sales of Available-for-sale debt securities	¥ 107,238	¥ 85,525	¥ 42,123
Gross realized losses on sales of available-for-sale debt securities	169,686	36,698	48,606
Losses on available-for-sale debt securities	(254,178)	(119,026)	¥ 1,458,264
Corporate bonds
Investment Securities [Line Items]
Losses on available-for-sale debt securities	¥ 359,330	¥ 47,281

Investment Securities (Investme

Investment Securities (Investments by Length and Category in Continuous Loss Position) (Detail) ¥ in Millions	Mar. 31, 2023 JPY (¥) Securities	Mar. 31, 2022 JPY (¥) Securities
Investment Securities [Line Items]
Available-for-sale debt securities, Fair value, Less than 12 months	¥ 10,322,922	¥ 27,939,292
Available-for-sale debt securities, Gross unrealized losses, Less than 12 months	35,765	177,600
Available-for-sale debt securities, Fair value, 12 months or more	5,113,458	1,039,235
Available-for-sale debt securities, Gross unrealized losses, 12 months or more	226,872	24,433
Available-for-sale debt securities, Fair value, Total	15,436,380	28,978,527
Available-for-sale debt securities, Gross unrealized losses, Total	¥ 262,637	¥ 202,033
Available-for-sale debt securities, Number of securities | Securities	1,610	1,730
Japanese national government and Japanese government agency bonds
Investment Securities [Line Items]
Available-for-sale debt securities, Fair value, Less than 12 months	¥ 7,644,337	¥ 22,998,960
Available-for-sale debt securities, Gross unrealized losses, Less than 12 months	8,066	126,516
Available-for-sale debt securities, Fair value, 12 months or more	2,105,210	353,932
Available-for-sale debt securities, Gross unrealized losses, 12 months or more	115,703	5,995
Available-for-sale debt securities, Fair value, Total	9,749,547	23,352,892
Available-for-sale debt securities, Gross unrealized losses, Total	¥ 123,769	¥ 132,511
Available-for-sale debt securities, Number of securities | Securities	438	486
Japanese prefectural and municipal bonds
Investment Securities [Line Items]
Available-for-sale debt securities, Fair value, Less than 12 months	¥ 962,234	¥ 2,430,603
Available-for-sale debt securities, Gross unrealized losses, Less than 12 months	1,781	14,864
Available-for-sale debt securities, Fair value, 12 months or more	711,896	31,139
Available-for-sale debt securities, Gross unrealized losses, 12 months or more	14,091	123
Available-for-sale debt securities, Fair value, Total	1,674,130	2,461,742
Available-for-sale debt securities, Gross unrealized losses, Total	¥ 15,872	¥ 14,987
Available-for-sale debt securities, Number of securities | Securities	723	926
Foreign government and official institution bonds
Investment Securities [Line Items]
Available-for-sale debt securities, Fair value, Less than 12 months	¥ 858,970	¥ 1,376,267
Available-for-sale debt securities, Gross unrealized losses, Less than 12 months	18,677	31,470
Available-for-sale debt securities, Fair value, 12 months or more	1,436,798	167,446
Available-for-sale debt securities, Gross unrealized losses, 12 months or more	89,695	17,570
Available-for-sale debt securities, Fair value, Total	2,295,768	1,543,713
Available-for-sale debt securities, Gross unrealized losses, Total	¥ 108,372	¥ 49,040
Available-for-sale debt securities, Number of securities | Securities	118	87
Corporate bonds
Investment Securities [Line Items]
Available-for-sale debt securities, Fair value, Less than 12 months	¥ 331,411	¥ 427,739
Available-for-sale debt securities, Gross unrealized losses, Less than 12 months	1,800	925
Available-for-sale debt securities, Fair value, 12 months or more	249,088	94,364
Available-for-sale debt securities, Gross unrealized losses, 12 months or more	1,177	148
Available-for-sale debt securities, Fair value, Total	580,499	522,103
Available-for-sale debt securities, Gross unrealized losses, Total	¥ 2,977	¥ 1,073
Available-for-sale debt securities, Number of securities | Securities	256	173
Residential mortgage-backed securities
Investment Securities [Line Items]
Available-for-sale debt securities, Fair value, Less than 12 months	¥ 166,778	¥ 178,857
Available-for-sale debt securities, Gross unrealized losses, Less than 12 months	5	58
Available-for-sale debt securities, Fair value, 12 months or more	522,774	391,265
Available-for-sale debt securities, Gross unrealized losses, 12 months or more	436	590
Available-for-sale debt securities, Fair value, Total	689,552	570,122
Available-for-sale debt securities, Gross unrealized losses, Total	¥ 441	¥ 648
Available-for-sale debt securities, Number of securities | Securities	15	12
Asset-backed securities
Investment Securities [Line Items]
Available-for-sale debt securities, Fair value, Less than 12 months	¥ 310,388	¥ 115,695
Available-for-sale debt securities, Gross unrealized losses, Less than 12 months	4,170	222
Available-for-sale debt securities, Fair value, 12 months or more	39,806	0
Available-for-sale debt securities, Gross unrealized losses, 12 months or more	194	0
Available-for-sale debt securities, Fair value, Total	350,194	115,695
Available-for-sale debt securities, Gross unrealized losses, Total	¥ 4,364	¥ 222
Available-for-sale debt securities, Number of securities | Securities	32	12
Other debt securities
Investment Securities [Line Items]
Available-for-sale debt securities, Fair value, Less than 12 months	¥ 48,804	¥ 44,128
Available-for-sale debt securities, Gross unrealized losses, Less than 12 months	1,266	3,526
Available-for-sale debt securities, Fair value, 12 months or more	47,886	1,089
Available-for-sale debt securities, Gross unrealized losses, 12 months or more	5,576	7
Available-for-sale debt securities, Fair value, Total	96,690	45,217
Available-for-sale debt securities, Gross unrealized losses, Total	¥ 6,842	¥ 3,533
Available-for-sale debt securities, Number of securities | Securities	28	4
Commercial paper
Investment Securities [Line Items]
Available-for-sale debt securities, Fair value, Less than 12 months		¥ 367,043
Available-for-sale debt securities, Gross unrealized losses, Less than 12 months		19
Available-for-sale debt securities, Fair value, 12 months or more		0
Available-for-sale debt securities, Gross unrealized losses, 12 months or more		0
Available-for-sale debt securities, Fair value, Total		367,043
Available-for-sale debt securities, Gross unrealized losses, Total		¥ 19
Available-for-sale debt securities, Number of securities | Securities		30

Investment Securities (Net Real

Investment Securities (Net Realized Gains (Losses) on Sales of Equity Securities and Net Unrealized Gains (Losses) on Equity Securities still held) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Net gains (losses) recognized during the period	¥ 104,023	¥ (125,271)	¥ 1,467,763
Net gains (losses) recognized during the period on equity securities sold during the period	18,313	(38,042)	47,775
Net unrealized gains (losses) recognized during the reporting period still held at the reporting date	¥ 85,710	¥ (87,229)	¥ 1,419,988

Investment Securities (Carrying

Investment Securities (Carrying Value of Nonmarketable Equity Securities) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
Nonmarketable equity securities | Measurement alternative
Investment Securities [Line Items]
Measurement alternative balance	¥ 381,928	¥ 310,570

Investment Securities (Related

Investment Securities (Related Adjustments for Nonmarketable Equity Securities) (Detail) - Nonmarketable equity securities - Measurement alternative - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Investment Securities [Line Items]
Measurement alternative impairment losses	¥ (8,230)	¥ (4,299)	¥ (5,188)
Measurement alternative downward changes for observable prices	(440)	0	0
Measurement alternative upward changes for observable prices	5,090	3,067	¥ 21,710
Cumulative impairment losses	20,151	12,354
Cumulative downward changes for observable prices	1,393	954
Cumulative upward changes for observable prices	¥ 59,069	¥ 54,223

Loans and Allowance for Credi_3

Loans and Allowance for Credit Losses (Narrative) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Financing Receivable, Allowance for Credit Losses [Line Items]
Commitments to extend credit to customers with TDRs	¥ 101,339	¥ 132,456
Nonperforming loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Decrease from charge-offs in the allowance for credit losses due to loan disposal activity	¥ 79,900	400	¥ 16,800
Minimum | Close Watch
Financing Receivable, Allowance for Credit Losses [Line Items]
Accruing loans contractually past due, in day	90 days
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Significant sales of loans	¥ 2,879,000	2,011,000	1,684,000
Commercial | Minimum
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans contractually past due before being placed on nonaccrual status, in month	1 month
Loans contractually past due before becoming defaulted loans, period	1 month
Commercial | Minimum | Close Watch
Financing Receivable, Allowance for Credit Losses [Line Items]
Accruing loans contractually past due, in day	90 days
Commercial | Maximum
Financing Receivable, Allowance for Credit Losses [Line Items]
Temporary extensions of maturity dates to nonaccrual loans, in day	90 days
Residential | Minimum
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans contractually past due before being placed on nonaccrual status, in month	6 months
Loans contractually past due before becoming defaulted loans, period	6 months
Residential | Maximum
Financing Receivable, Allowance for Credit Losses [Line Items]
Temporary extensions of maturity dates to nonaccrual loans, in day	90 days
Card | Minimum
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans contractually past due before being placed on nonaccrual status, in month	3 months
Loans contractually past due before becoming defaulted loans, period	1 month
MUAH
Financing Receivable, Allowance for Credit Losses [Line Items]
Assets including loans	¥ 2,614,535
Significant sales of loans	¥ 556,000	¥ 518,000	¥ 586,000
MUAH | Minimum
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans contractually past due before being placed on nonaccrual status, in month	3 months
Loans contractually past due before becoming defaulted loans, period	60 days
Krungsri | Minimum
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans contractually past due before being placed on nonaccrual status, in month	3 months
Loans contractually past due before becoming defaulted loans, period	6 months
Krungsri | Minimum | Under-Performing
Financing Receivable, Allowance for Credit Losses [Line Items]
Cumulative period of loans for categorizing internal borrower ratings, commencing from the contractual due date, in day	30 days
Krungsri | Minimum | Non-Performing
Financing Receivable, Allowance for Credit Losses [Line Items]
Cumulative period of loans for categorizing internal borrower ratings, commencing from the contractual due date, in day	90 days

Loans and Allowance for Credi_4

Loans and Allowance for Credit Losses (Total Outstanding Loans and Past Due Analysis) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	¥ 120,356,472	¥ 113,471,623
Loans Held for Sale	967,082	514,109
Past Due 90 Days and Accruing	18,152	6,620
Unearned income, unamortized premiums—net and deferred loan fees—net	401,012	322,230
Total	119,955,460	113,149,393
1-3 months
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	265,966	210,279
Greater Than 3 months
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	240,633	207,798
Total Past Due
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	506,599	418,077
Current
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	118,882,791	112,539,437
Residential
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	12,874,855	13,301,505
Loans Held for Sale	0	0
Past Due 90 Days and Accruing	3,342	3,360
Residential | 1-3 months
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	32,514	32,078
Residential | Greater Than 3 months
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	11,496	13,598
Residential | Total Past Due
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	44,010	45,676
Residential | Current
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	12,830,845	13,255,829
Card
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	472,842	464,266
Loans Held for Sale	0	0
Past Due 90 Days and Accruing	0	0
Card | 1-3 months
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	14,992	10,250
Card | Greater Than 3 months
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	26,587	26,818
Card | Total Past Due
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	41,579	37,068
Card | Current
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	431,263	427,198
MUAH
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	176,691	2,812,969
Loans Held for Sale		70,841
Past Due 90 Days and Accruing		0
MUAH | 1-3 months
Loans and Leases Receivable Disclosure [Line Items]
Total Loans		625
MUAH | Greater Than 3 months
Loans and Leases Receivable Disclosure [Line Items]
Total Loans		0
MUAH | Total Past Due
Loans and Leases Receivable Disclosure [Line Items]
Total Loans		625
MUAH | Current
Loans and Leases Receivable Disclosure [Line Items]
Total Loans		2,741,503
Krungsri
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	7,782,635	6,822,765
Loans Held for Sale	0	0
Past Due 90 Days and Accruing	0	0
Krungsri | 1-3 months
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	188,802	115,636
Krungsri | Greater Than 3 months
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	136,627	126,494
Krungsri | Total Past Due
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	325,429	242,130
Krungsri | Current
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	7,457,206	6,580,635
Other
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	1,410,410	1,045,121
Loans Held for Sale	0	0
Past Due 90 Days and Accruing	0	0
Other | 1-3 months
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	14,241	21,729
Other | Greater Than 3 months
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	20,235	21,152
Other | Total Past Due
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	34,476	42,881
Other | Current
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	1,375,934	1,002,240
Domestic | Commercial
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	55,626,058	54,044,718
Loans Held for Sale	87,659	69,257
Past Due 90 Days and Accruing	2,652	3,260
Domestic | Commercial | 1-3 months
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	6,599	12,556
Domestic | Commercial | Greater Than 3 months
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	12,485	9,138
Domestic | Commercial | Total Past Due
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	19,084	21,694
Domestic | Commercial | Current
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	55,519,315	53,953,767
Foreign
Loans and Leases Receivable Disclosure [Line Items]
Total	50,981,148	45,338,581
Foreign | Commercial
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	42,189,672	34,980,279
Loans Held for Sale	879,423	374,011
Past Due 90 Days and Accruing	12,158	0
Foreign | Commercial | 1-3 months
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	8,818	17,405
Foreign | Commercial | Greater Than 3 months
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	33,203	10,598
Foreign | Commercial | Total Past Due
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	42,021	28,003
Foreign | Commercial | Current
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	¥ 41,268,228	¥ 34,578,265

Loans and Allowance for Credi_5

Loans and Allowance for Credit Losses (Nonaccrual Status of Loans by Class) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans	¥ 1,005,133	¥ 1,184,829
Nonaccrual loans not requiring an allowance for credit losses	172,152	201,166
Recognized Interest Income	22,763	19,943
Loans held for sale placed on nonaccrual status	9,205	7,946
Commercial | Domestic
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans	401,836	633,768
Nonaccrual loans not requiring an allowance for credit losses	99,657	109,919
Recognized Interest Income	5,409	6,532
Commercial | Foreign
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans	246,675	224,566
Nonaccrual loans not requiring an allowance for credit losses	65,242	84,837
Recognized Interest Income	5,918	4,734
Residential
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans	47,910	56,175
Nonaccrual loans not requiring an allowance for credit losses	3,962	3,579
Recognized Interest Income	1,052	811
Card
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans	67,159	62,578
Nonaccrual loans not requiring an allowance for credit losses	0	0
Recognized Interest Income	17	25
MUAH
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans		15,349
Nonaccrual loans not requiring an allowance for credit losses		0
Recognized Interest Income		77
Krungsri
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans	211,705	165,775
Nonaccrual loans not requiring an allowance for credit losses	3,286	2,824
Recognized Interest Income	6,482	4,076
Other
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans	29,848	26,618
Nonaccrual loans not requiring an allowance for credit losses	5	7
Recognized Interest Income	¥ 3,885	¥ 3,688

Loans and Allowance for Credi_6

Loans and Allowance for Credit Losses (Troubled Debt Restructurings by Class) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Financing Receivable, Modifications [Line Items]
Financing Receivable, Troubled Debt Restructuring, Premodification	¥ 257,373	¥ 265,569	¥ 178,416
Financing Receivable, Troubled Debt Restructuring, Postmodification	256,425	263,450	177,246
Troubled debt restructurings that subsequently defaulted, Recorded Investment	29,825	38,521	39,450
Commercial | Domestic
Financing Receivable, Modifications [Line Items]
Financing Receivable, Troubled Debt Restructuring, Premodification	68,477	168,348	39,282
Financing Receivable, Troubled Debt Restructuring, Postmodification	68,477	167,342	39,282
Troubled debt restructurings that subsequently defaulted, Recorded Investment	8,123	12,020	16,179
Commercial | Foreign
Financing Receivable, Modifications [Line Items]
Financing Receivable, Troubled Debt Restructuring, Premodification	35,319	16,144	33,839
Financing Receivable, Troubled Debt Restructuring, Postmodification	35,319	16,144	33,839
Troubled debt restructurings that subsequently defaulted, Recorded Investment	11,945	13,180	9,861
Residential
Financing Receivable, Modifications [Line Items]
Financing Receivable, Troubled Debt Restructuring, Premodification	15,291	22,484	18,121
Financing Receivable, Troubled Debt Restructuring, Postmodification	15,291	22,484	18,121
Troubled debt restructurings that subsequently defaulted, Recorded Investment	116	203	157
Card
Financing Receivable, Modifications [Line Items]
Financing Receivable, Troubled Debt Restructuring, Premodification	22,355	20,937	20,857
Financing Receivable, Troubled Debt Restructuring, Postmodification	21,407	19,824	19,737
Troubled debt restructurings that subsequently defaulted, Recorded Investment	2,783	2,746	2,733
MUAH
Financing Receivable, Modifications [Line Items]
Financing Receivable, Troubled Debt Restructuring, Premodification		11,384	22,801
Financing Receivable, Troubled Debt Restructuring, Postmodification		11,384	22,763
Troubled debt restructurings that subsequently defaulted, Recorded Investment		0	3,437
Krungsri
Financing Receivable, Modifications [Line Items]
Financing Receivable, Troubled Debt Restructuring, Premodification	94,790	14,869	18,548
Financing Receivable, Troubled Debt Restructuring, Postmodification	94,790	14,869	18,548
Troubled debt restructurings that subsequently defaulted, Recorded Investment	5,289	5,657	6,226
Other
Financing Receivable, Modifications [Line Items]
Financing Receivable, Troubled Debt Restructuring, Premodification	21,141	11,403	24,968
Financing Receivable, Troubled Debt Restructuring, Postmodification	21,141	11,403	24,956
Troubled debt restructurings that subsequently defaulted, Recorded Investment	¥ 1,569	¥ 4,715	¥ 857

Loans and Allowance for Credi_7

Loans and Allowance for Credit Losses (Credit Quality Indicators of Loans and Year of Origination by Class) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Total	¥ 120,356,472	¥ 113,471,623
Commercial | Excluding loans held for sale and covered loans
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Financing receivable, year 1	32,957,651	27,445,726
Financing receivable, year 2	10,100,587	10,850,943
Financing receivable, year 3	8,626,319	7,634,337
Financing receivable, year 4	5,653,421	6,509,048
Financing receivable, year 5	4,385,807	3,924,194
Financing receivable, >5 years	9,366,641	8,827,987
Revolving loans amortized cost basis	25,743,172	23,380,258
Revolving loans converted to term loans amortized cost basis	15,050	9,236
Total	96,848,648	88,581,729
Commercial | Domestic
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Total	55,626,058	54,044,718
Commercial | Domestic | Excluding loans held for sale and covered loans
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Financing receivable, year 1	20,132,474	19,038,698
Financing receivable, year 2	6,099,692	7,937,529
Financing receivable, year 3	6,675,895	5,003,439
Financing receivable, year 4	4,002,329	4,499,174
Financing receivable, year 5	3,214,528	2,817,819
Financing receivable, >5 years	7,406,590	6,639,931
Revolving loans amortized cost basis	8,006,891	8,038,871
Revolving loans converted to term loans amortized cost basis	0	0
Total	55,538,399	53,975,461
Commercial | Domestic | Normal | Excluding loans held for sale and covered loans
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Financing receivable, year 1	19,867,845	18,756,933
Financing receivable, year 2	5,957,659	7,646,272
Financing receivable, year 3	6,472,135	4,669,784
Financing receivable, year 4	3,823,755	4,335,640
Financing receivable, year 5	3,126,146	2,698,956
Financing receivable, >5 years	6,722,981	6,205,070
Revolving loans amortized cost basis	7,722,379	7,686,772
Revolving loans converted to term loans amortized cost basis	0	0
Total	53,692,900	51,999,427
Commercial | Domestic | Close Watch | Excluding loans held for sale and covered loans
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Financing receivable, year 1	222,202	257,276
Financing receivable, year 2	124,499	266,311
Financing receivable, year 3	172,270	167,387
Financing receivable, year 4	114,534	150,834
Financing receivable, year 5	74,635	104,047
Financing receivable, >5 years	567,514	307,367
Revolving loans amortized cost basis	262,686	306,193
Revolving loans converted to term loans amortized cost basis	0	0
Total	1,538,340	1,559,415
Commercial | Domestic | Likely to become Bankrupt or Legally/Virtually Bankrupt | Excluding loans held for sale and covered loans
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Financing receivable, year 1	42,427	24,489
Financing receivable, year 2	17,534	24,946
Financing receivable, year 3	31,490	166,268
Financing receivable, year 4	64,040	12,700
Financing receivable, year 5	13,747	14,816
Financing receivable, >5 years	116,095	127,494
Revolving loans amortized cost basis	21,826	45,906
Revolving loans converted to term loans amortized cost basis	0	0
Total	307,159	416,619
Commercial | Foreign
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Total	42,189,672	34,980,279
Commercial | Foreign | Excluding loans held for sale and covered loans
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Financing receivable, year 1	12,825,177	8,407,028
Financing receivable, year 2	4,000,895	2,913,414
Financing receivable, year 3	1,950,424	2,630,898
Financing receivable, year 4	1,651,092	2,009,874
Financing receivable, year 5	1,171,279	1,106,375
Financing receivable, >5 years	1,960,051	2,188,056
Revolving loans amortized cost basis	17,736,281	15,341,387
Revolving loans converted to term loans amortized cost basis	15,050	9,236
Total	41,310,249	34,606,268
Commercial | Foreign | Normal | Excluding loans held for sale and covered loans
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Financing receivable, year 1	12,508,547	8,250,729
Financing receivable, year 2	3,931,278	2,814,362
Financing receivable, year 3	1,857,934	2,501,594
Financing receivable, year 4	1,577,120	1,881,532
Financing receivable, year 5	1,083,934	1,031,105
Financing receivable, >5 years	1,824,977	2,031,243
Revolving loans amortized cost basis	17,540,822	15,089,995
Revolving loans converted to term loans amortized cost basis	15,050	1,912
Total	40,339,662	33,602,472
Commercial | Foreign | Close Watch | Excluding loans held for sale and covered loans
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Financing receivable, year 1	262,388	149,502
Financing receivable, year 2	34,656	90,355
Financing receivable, year 3	60,637	73,253
Financing receivable, year 4	50,210	110,170
Financing receivable, year 5	71,966	36,274
Financing receivable, >5 years	79,450	93,622
Revolving loans amortized cost basis	174,436	223,203
Revolving loans converted to term loans amortized cost basis	0	7,324
Total	733,743	783,703
Commercial | Foreign | Likely to become Bankrupt or Legally/Virtually Bankrupt | Excluding loans held for sale and covered loans
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Financing receivable, year 1	54,242	6,797
Financing receivable, year 2	34,961	8,697
Financing receivable, year 3	31,853	56,051
Financing receivable, year 4	23,762	18,172
Financing receivable, year 5	15,379	38,996
Financing receivable, >5 years	55,624	63,191
Revolving loans amortized cost basis	21,023	28,189
Revolving loans converted to term loans amortized cost basis	0	0
Total	236,844	220,093
Residential
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Total	12,874,855	13,301,505
Residential | Excluding loans held for sale and covered loans
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Financing receivable, year 1	688,000	782,446
Financing receivable, year 2	747,161	641,706
Financing receivable, year 3	607,237	976,736
Financing receivable, year 4	919,359	866,282
Financing receivable, year 5	811,469	900,959
Financing receivable, >5 years	9,077,669	9,104,691
Revolving loans amortized cost basis	23,960	28,685
Revolving loans converted to term loans amortized cost basis	0	0
Total	12,874,855	13,301,505
Residential | Accrual | Excluding loans held for sale and covered loans
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Financing receivable, year 1	687,800	782,314
Financing receivable, year 2	747,121	641,499
Financing receivable, year 3	607,047	976,162
Financing receivable, year 4	918,781	865,761
Financing receivable, year 5	810,933	900,120
Financing receivable, >5 years	9,034,589	9,054,326
Revolving loans amortized cost basis	22,093	26,460
Revolving loans converted to term loans amortized cost basis	0	0
Total	12,828,364	13,246,642
Residential | Nonaccrual | Excluding loans held for sale and covered loans
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Financing receivable, year 1	200	132
Financing receivable, year 2	40	207
Financing receivable, year 3	190	574
Financing receivable, year 4	578	521
Financing receivable, year 5	536	839
Financing receivable, >5 years	43,080	50,365
Revolving loans amortized cost basis	1,867	2,225
Revolving loans converted to term loans amortized cost basis	0	0
Total	46,491	54,863
Card
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Total	472,842	464,266
Card | Excluding loans held for sale and covered loans
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Financing receivable, year 1	12	19
Financing receivable, year 2	147	106
Financing receivable, year 3	240	182
Financing receivable, year 4	239	175
Financing receivable, year 5	181	276
Financing receivable, >5 years	587	437
Revolving loans amortized cost basis	403,687	400,552
Revolving loans converted to term loans amortized cost basis	67,749	62,519
Total	472,842	464,266
Card | Accrual | Excluding loans held for sale and covered loans
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Financing receivable, year 1	1	1
Financing receivable, year 2	7	8
Financing receivable, year 3	10	8
Financing receivable, year 4	8	9
Financing receivable, year 5	9	13
Financing receivable, >5 years	37	41
Revolving loans amortized cost basis	391,237	387,648
Revolving loans converted to term loans amortized cost basis	14,374	13,960
Total	405,683	401,688
Card | Nonaccrual | Excluding loans held for sale and covered loans
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Financing receivable, year 1	11	18
Financing receivable, year 2	140	98
Financing receivable, year 3	230	174
Financing receivable, year 4	231	166
Financing receivable, year 5	172	263
Financing receivable, >5 years	550	396
Revolving loans amortized cost basis	12,450	12,904
Revolving loans converted to term loans amortized cost basis	53,375	48,559
Total	67,159	62,578
MUAH
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Total	176,691	2,812,969
MUAH | Excluding loans held for sale and covered loans
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Financing receivable, year 1		364,236
Financing receivable, year 2		306,134
Financing receivable, year 3		147,821
Financing receivable, year 4		62,455
Financing receivable, year 5		50,264
Financing receivable, >5 years		122,149
Revolving loans amortized cost basis		1,689,069
Revolving loans converted to term loans amortized cost basis		0
Total		2,742,128
MUAH | Pass | Credit Quality Based on Internal Credit Ratings | Excluding loans held for sale and covered loans
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Financing receivable, year 1		357,334
Financing receivable, year 2		298,658
Financing receivable, year 3		126,083
Financing receivable, year 4		48,653
Financing receivable, year 5		43,938
Financing receivable, >5 years		117,778
Revolving loans amortized cost basis		1,642,946
Revolving loans converted to term loans amortized cost basis		0
Total		2,635,390
MUAH | Special Mention | Credit Quality Based on Internal Credit Ratings | Excluding loans held for sale and covered loans
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Financing receivable, year 1		3,106
Financing receivable, year 2		0
Financing receivable, year 3		20,013
Financing receivable, year 4		2,415
Financing receivable, year 5		5,981
Financing receivable, >5 years		805
Revolving loans amortized cost basis		33,471
Revolving loans converted to term loans amortized cost basis		0
Total		65,791
MUAH | Classified | Credit Quality Based on Internal Credit Ratings | Excluding loans held for sale and covered loans
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Financing receivable, year 1		3,796
Financing receivable, year 2		7,476
Financing receivable, year 3		1,725
Financing receivable, year 4		11,387
Financing receivable, year 5		345
Financing receivable, >5 years		3,566
Revolving loans amortized cost basis		12,652
Revolving loans converted to term loans amortized cost basis		0
Total		40,947
Krungsri
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Total	7,782,635	6,822,765
Krungsri | Excluding loans held for sale and covered loans
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Financing receivable, year 1	1,824,628	1,350,265
Financing receivable, year 2	1,046,959	964,094
Financing receivable, year 3	654,933	901,955
Financing receivable, year 4	692,616	680,090
Financing receivable, year 5	515,731	329,847
Financing receivable, >5 years	605,053	481,981
Revolving loans amortized cost basis	2,427,923	2,099,727
Revolving loans converted to term loans amortized cost basis	14,792	14,806
Total	7,782,635	6,822,765
Krungsri | Performing | Excluding loans held for sale and covered loans
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Financing receivable, year 1	1,689,034	1,297,054
Financing receivable, year 2	956,470	891,374
Financing receivable, year 3	570,865	788,828
Financing receivable, year 4	553,616	573,840
Financing receivable, year 5	406,258	270,783
Financing receivable, >5 years	459,322	363,905
Revolving loans amortized cost basis	2,292,418	1,961,481
Revolving loans converted to term loans amortized cost basis	0	0
Total	6,927,983	6,147,265
Krungsri | Under-Performing | Excluding loans held for sale and covered loans
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Financing receivable, year 1	108,770	42,326
Financing receivable, year 2	66,555	58,084
Financing receivable, year 3	67,504	90,519
Financing receivable, year 4	111,435	80,841
Financing receivable, year 5	85,928	45,982
Financing receivable, >5 years	98,103	78,690
Revolving loans amortized cost basis	104,652	113,283
Revolving loans converted to term loans amortized cost basis	0	0
Total	642,947	509,725
Krungsri | Non-Performing | Excluding loans held for sale and covered loans
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Financing receivable, year 1	26,824	10,885
Financing receivable, year 2	23,934	14,636
Financing receivable, year 3	16,564	22,608
Financing receivable, year 4	27,565	25,409
Financing receivable, year 5	23,545	13,082
Financing receivable, >5 years	47,628	39,386
Revolving loans amortized cost basis	30,853	24,963
Revolving loans converted to term loans amortized cost basis	14,792	14,806
Total	211,705	165,775
Other
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Total	1,410,410	1,045,121
Other | Excluding loans held for sale and covered loans
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Financing receivable, year 1	551,560	400,482
Financing receivable, year 2	190,786	143,336
Financing receivable, year 3	108,148	85,496
Financing receivable, year 4	48,867	40,445
Financing receivable, year 5	19,875	35,346
Financing receivable, >5 years	80,252	0
Revolving loans amortized cost basis	410,922	340,016
Revolving loans converted to term loans amortized cost basis	0	0
Total	1,410,410	1,045,121
Other | Accrual | Excluding loans held for sale and covered loans
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Financing receivable, year 1	549,274	398,744
Financing receivable, year 2	187,638	136,317
Financing receivable, year 3	106,522	83,278
Financing receivable, year 4	47,235	38,609
Financing receivable, year 5	17,832	32,934
Financing receivable, >5 years	75,726	0
Revolving loans amortized cost basis	396,334	328,621
Revolving loans converted to term loans amortized cost basis	0	0
Total	1,380,561	1,018,503
Other | Nonaccrual | Excluding loans held for sale and covered loans
Financing Receivables Credit Quality Indicator By Year Of Origination [Line Items]
Financing receivable, year 1	2,286	1,738
Financing receivable, year 2	3,148	7,019
Financing receivable, year 3	1,626	2,218
Financing receivable, year 4	1,632	1,836
Financing receivable, year 5	2,043	2,412
Financing receivable, >5 years	4,526	0
Revolving loans amortized cost basis	14,588	11,395
Revolving loans converted to term loans amortized cost basis	0	0
Total	¥ 29,849	¥ 26,618

Loans and Allowance for Credi_8

Loans and Allowance for Credit Losses (Changes in Allowance for Credit Losses by Portfolio Segment) (Detail) - JPY (¥)	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of fiscal year	¥ 1,470,701,000,000	¥ 1,348,391,000,000	¥ 809,540,000,000
Transfer from MUAH to Commercial segment	0
Provision for credit losses	8,148,000,000	277,995,000,000	484,210,000,000
Charge-offs	329,091,000,000	238,012,000,000	290,506,000,000
Recoveries collected	69,483,000,000	58,715,000,000	45,082,000,000
Net charge-offs	259,608,000,000	179,297,000,000	245,424,000,000
Other	53,657,000,000	23,612,000,000	(23,639,000,000)
Balance at end of fiscal year	1,272,898,000,000	1,470,701,000,000	1,348,391,000,000
Cumulative effect adjustment | Effect of adopting new guidance on measurement of credit losses on financial instruments
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of fiscal year		323,704,000,000
Balance at end of fiscal year			323,704,000,000
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of fiscal year	934,086,000,000	734,577,000,000	482,275,000,000
Transfer from MUAH to Commercial segment	33,062,000,000
Provision for credit losses	(113,886,000,000)	236,659,000,000	235,584,000,000
Charge-offs	158,780,000,000	57,848,000,000	77,904,000,000
Recoveries collected	18,784,000,000	11,898,000,000	9,262,000,000
Net charge-offs	139,996,000,000	45,950,000,000	68,642,000,000
Other	6,323,000,000	8,800,000,000	1,532,000,000
Balance at end of fiscal year	719,589,000,000	934,086,000,000	734,577,000,000
Commercial | Cumulative effect adjustment | Effect of adopting new guidance on measurement of credit losses on financial instruments
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of fiscal year		83,828,000,000
Balance at end of fiscal year			83,828,000,000
Residential
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of fiscal year	69,887,000,000	82,893,000,000	34,746,000,000
Transfer from MUAH to Commercial segment
Provision for credit losses	(9,511,000,000)	(10,899,000,000)	1,385,000,000
Charge-offs	645,000,000	2,121,000,000	2,745,000,000
Recoveries collected	16,000,000	14,000,000	13,000,000
Net charge-offs	629,000,000	2,107,000,000	2,732,000,000
Other	0	0	0
Balance at end of fiscal year	59,747,000,000	69,887,000,000	82,893,000,000
Residential | Cumulative effect adjustment | Effect of adopting new guidance on measurement of credit losses on financial instruments
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of fiscal year		49,494,000,000
Balance at end of fiscal year			49,494,000,000
Card
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of fiscal year	40,768,000,000	44,217,000,000	35,180,000,000
Transfer from MUAH to Commercial segment
Provision for credit losses	19,236,000,000	15,473,000,000	17,876,000,000
Charge-offs	18,255,000,000	20,153,000,000	24,564,000,000
Recoveries collected	720,000,000	1,231,000,000	1,463,000,000
Net charge-offs	17,535,000,000	18,922,000,000	23,101,000,000
Other	0	0	0
Balance at end of fiscal year	42,469,000,000	40,768,000,000	44,217,000,000
Card | Cumulative effect adjustment | Effect of adopting new guidance on measurement of credit losses on financial instruments
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of fiscal year		14,262,000,000
Balance at end of fiscal year			14,262,000,000
MUAH
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of fiscal year	30,365,000,000	131,755,000,000	58,995,000,000
Provision for credit losses		(101,112,000,000)	90,064,000,000
Charge-offs		19,208,000,000	40,376,000,000
Recoveries collected		9,532,000,000	4,362,000,000
Net charge-offs		9,676,000,000	36,014,000,000
Other		9,398,000,000	(6,327,000,000)
Balance at end of fiscal year	3,428,000,000	30,365,000,000	131,755,000,000
MUAH | Cumulative effect adjustment | Effect of adopting new guidance on measurement of credit losses on financial instruments
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of fiscal year		25,037,000,000
Balance at end of fiscal year			25,037,000,000
Krungsri
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of fiscal year	322,386,000,000	293,396,000,000	169,626,000,000
Transfer from MUAH to Commercial segment
Provision for credit losses	70,729,000,000	90,514,000,000	90,167,000,000
Charge-offs	95,489,000,000	83,474,000,000	93,192,000,000
Recoveries collected	25,457,000,000	22,890,000,000	23,415,000,000
Net charge-offs	70,032,000,000	60,584,000,000	69,777,000,000
Other	34,948,000,000	(940,000,000)	(14,953,000,000)
Balance at end of fiscal year	358,031,000,000	322,386,000,000	293,396,000,000
Krungsri | Cumulative effect adjustment | Effect of adopting new guidance on measurement of credit losses on financial instruments
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of fiscal year		118,333,000,000
Balance at end of fiscal year			118,333,000,000
Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of fiscal year	103,574,000,000	61,553,000,000	28,718,000,000
Transfer from MUAH to Commercial segment	(33,062,000,000)
Provision for credit losses	41,580,000,000		49,134,000,000
Charge-offs	55,922,000,000		51,725,000,000
Recoveries collected	24,506,000,000		6,567,000,000
Net charge-offs	31,416,000,000		45,158,000,000
Other	12,386,000,000		(3,891,000,000)
Balance at end of fiscal year	93,062,000,000	103,574,000,000	61,553,000,000
Other | Cumulative effect adjustment | Effect of adopting new guidance on measurement of credit losses on financial instruments
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of fiscal year		32,750,000,000
Balance at end of fiscal year			32,750,000,000
Unallocated Financing Receivables, Excluding MUAH
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of fiscal year	¥ 73,209,000,000	61,553,000,000
Provision for credit losses		47,360,000,000
Charge-offs		55,208,000,000
Recoveries collected		13,150,000,000
Net charge-offs		42,058,000,000
Other		6,354,000,000
Balance at end of fiscal year		¥ 73,209,000,000	¥ 61,553,000,000

Premises and Equipment (Compone

Premises and Equipment (Components of Premises and Equipment) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
Property, Plant and Equipment [Line Items]
Total	¥ 1,994,972	¥ 1,923,706
Less accumulated depreciation	1,134,394	1,107,877
Premises and equipment-net	860,578	815,829
Land
Property, Plant and Equipment [Line Items]
Total	393,932	372,710
Buildings
Property, Plant and Equipment [Line Items]
Total	800,821	766,945
Equipment and furniture
Property, Plant and Equipment [Line Items]
Total	509,828	497,478
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total	255,712	255,679
Construction in progress
Property, Plant and Equipment [Line Items]
Total	¥ 34,679	¥ 30,894

Premises and Equipment (Narrati

Premises and Equipment (Narrative) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Property, Plant and Equipment [Line Items]
Impairment losses for long-lived assets	¥ 5,317	¥ 6,574	¥ 11,424
Impairment, Long-Lived Asset, Held-for-Use, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other non-interest expenses (Notes 5 and 26)
Real estate
Property, Plant and Equipment [Line Items]
Impairment of assets held for sale	¥ 174	¥ 58	¥ 773

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets (Movement in Carrying Amount of Goodwill by Business Segment) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021	Apr. 01, 2017
Goodwill [Line Items]
Goodwill	¥ 889,524	¥ 1,118,889	¥ 1,094,344
Accumulated impairment losses	(592,752)	(723,492)	(723,492)
Less: Goodwill, net of accumulated impairment losses in transferred business of MUFG Union Bank		(91,786)
Goodwill	296,772	303,611	370,852
Impairment loss	(33,553)	0	(147,564)
Foreign currency translation adjustments and other	26,714	(24,545)
Goodwill, fully impaired				¥ 1,900,019
Operating Segments | Customer business | Global Corporate & Investment Banking Business Group
Goodwill [Line Items]
Goodwill	152,236	144,793	140,099
Accumulated impairment losses	(63,568)	(63,393)	63,393
Less: Goodwill, net of accumulated impairment losses in transferred business of MUFG Union Bank		(2,415)
Goodwill	88,668	78,985	76,706
Impairment loss	0
Foreign currency translation adjustments and other	9,683	(4,694)
Operating Segments | Customer business | Global Commercial Banking Business Group
Goodwill [Line Items]
Goodwill	481,263	736,002	728,644
Accumulated impairment losses	(481,263)	(645,731)	(645,731)
Less: Goodwill, net of accumulated impairment losses in transferred business of MUFG Union Bank		(89,371)
Goodwill	0	900	82,913
Impairment loss	0
Foreign currency translation adjustments and other	(900)	(7,358)
Operating Segments | Customer business | Asset Management & Investor Services Business Group
Goodwill [Line Items]
Goodwill	253,725	235,794	223,301
Accumulated impairment losses	(47,921)	(14,368)	(14,368)
Less: Goodwill, net of accumulated impairment losses in transferred business of MUFG Union Bank		0
Goodwill	205,804	221,426	208,933
Impairment loss	(33,553)
Foreign currency translation adjustments and other	17,931	(12,493)
Operating Segments | Global Markets Business Group
Goodwill [Line Items]
Goodwill	2,300	2,300	2,300
Accumulated impairment losses	0	0	0
Less: Goodwill, net of accumulated impairment losses in transferred business of MUFG Union Bank		0
Goodwill	2,300	2,300	¥ 2,300
Impairment loss	0
Foreign currency translation adjustments and other	¥ 0	¥ 0

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets (Narrative) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Goodwill and Other Intangible Assets [Line Items]
Impairment losses on goodwill	¥ 33,553	¥ 0	¥ 147,564
Intangible assets subject to amortization acquired	273,108	262,826
Intangible assets not subject to amortization acquired	1,479	3,498
Impairment losses for intangible assets, whose carrying amounts exceeded their fair value	5,151	33,301	21,680
Software
Goodwill and Other Intangible Assets [Line Items]
Intangible assets subject to amortization acquired	¥ 272,410	¥ 262,645
Weighted average amortization periods of intangible assets subject to amortization, years	5 years	6 years
Operating Segments | Global Commercial Banking Business Group and Global Corporate & Investment Banking Business Group | MUAH | Customer business
Goodwill and Other Intangible Assets [Line Items]
Impairment losses on goodwill	¥ 33,553		¥ 147,564

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets (Carrying Amount of Other Intangible Assets by Major Class) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
Intangible assets subject to amortization:
Gross carrying amount	¥ 4,209,701	¥ 3,904,412
Accumulated amortization	3,043,436	2,763,862
Net carrying amount	1,166,265	1,140,550
Intangible assets not subject to amortization:
Other	7,958	8,051
Total	1,174,223	1,148,601
Software
Intangible assets subject to amortization:
Gross carrying amount	3,440,220	3,169,332
Accumulated amortization	2,606,923	2,380,861
Net carrying amount	833,297	788,471
Customer relationships
Intangible assets subject to amortization:
Gross carrying amount	552,204	528,969
Accumulated amortization	319,293	282,324
Net carrying amount	232,911	246,645
Core deposit intangibles
Intangible assets subject to amortization:
Gross carrying amount	119,555	114,059
Accumulated amortization	69,379	58,972
Net carrying amount	50,176	55,087
Trade names
Intangible assets subject to amortization:
Gross carrying amount	79,861	76,858
Accumulated amortization	41,090	36,846
Net carrying amount	38,771	40,012
Other
Intangible assets subject to amortization:
Gross carrying amount	17,861	15,194
Accumulated amortization	6,751	4,859
Net carrying amount	¥ 11,110	¥ 10,335

Goodwill and Other Intangible_6

Goodwill and Other Intangible Assets (Estimated Aggregate Amortization Expense for Intangible Assets for Next Five Fiscal Years) (Detail) ¥ in Millions	Mar. 31, 2023 JPY (¥)
Estimated aggregate amortization expense for intangible assets for the next five fiscal years:
2024	¥ 281,137
2025	236,575
2026	193,844
2027	146,394
2028	¥ 111,124

Lease Transactions (Narrative)

Lease Transactions (Narrative) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Leases [Abstract]
Right-of-use assets of finance leases, in consolidated balance sheets line item	Premises and equipment—net (Notes 5 and 7)	Premises and equipment—net (Notes 5 and 7)
Right-of-use assets of finance leases	¥ 16,402	¥ 12,980
Lease liabilities of finance leases, in consolidated balance sheets line item	Long-term debt (including ¥483,051 and ¥431,338 measured at fair value under the fair value option in 2022 and 2023) (Notes 7, 9, 12 and 31)	Long-term debt (including ¥483,051 and ¥431,338 measured at fair value under the fair value option in 2022 and 2023) (Notes 7, 9, 12 and 31)
Lease liabilities of finance leases	¥ 19,470	¥ 16,104
Right-of-use assets of operating leases, in consolidated balance sheets line item	Other Assets	Other Assets
Right-of-use assets of operating leases	¥ 227,112	¥ 261,803
Lease liabilities of operating leases, in consolidated balance sheets line item	Other Liabilities	Other Liabilities
Amount on balance sheet	¥ 337,391	¥ 384,183
Operating Lease, Impairment Loss	¥ 15,720	¥ 20,830

Lease Transactions (Profit or L

Lease Transactions (Profit or Loss of Lease Transactions as a Lessee) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Finance lease cost:
Amortization of right-of-use assets	¥ 5,672	¥ 4,816	¥ 4,971
Interest on lease liabilities	208	198	240
Operating lease cost	¥ 67,393	¥ 81,206	¥ 91,276

Lease Transactions (Information

Lease Transactions (Information of Lease Transactions as a Lessee) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from finance leases	¥ 282	¥ 262
Operating cash flows from operating leases	101,549	107,047
Financing cash flows from finance leases	8,124	7,426
Right-of-use assets obtained in exchange for new finance lease liabilities	11,066	4,055	¥ 3,487
Right-of-use assets obtained in exchange for new operating lease liabilities	¥ 35,678	¥ 48,095	¥ 50,564
Weighted-average remaining lease term:
Finance leases	3 years 6 months	3 years 7 months 6 days
Operating leases	7 years 7 months 6 days	8 years
Weighted-average discount rate:
Finance leases	0.84%	0.77%
Operating leases	0.90%	0.76%

Lease Transactions (Maturities

Lease Transactions (Maturities of Lease Liabilities) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
Undiscounted total lease payments: Finance leases, maturities in
2024	¥ 7,718
2025	5,539
2026	2,994
2027	1,991
2028	1,004
2029 and thereafter	642
Total undiscounted cash flows	19,888
Difference between undiscounted and discounted cash flows	(418)
Lease liabilities of finance leases	19,470	¥ 16,104
Undiscounted total lease payments: Operating leases, maturities in
2024	85,292
2025	62,184
2026	44,667
2027	30,870
2028	26,836
2029 and thereafter	106,453
Total undiscounted cash flows	356,302
Difference between undiscounted and discounted cash flows	(18,911)
Amount on balance sheet	¥ 337,391	¥ 384,183

Lease Transactions (Profit or_2

Lease Transactions (Profit or Loss of Lease Transactions as a Lessor) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Sales type and direct financing leases:
Finance income on net investment	¥ 127,724	¥ 116,430	¥ 122,810
Operating leases:
Lease income	6,978	4,202	3,663
Total	¥ 134,702	¥ 120,632	¥ 126,473

Lease Transactions (Component o

Lease Transactions (Component of Sales Type and Direct Financing Lease Transactions) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
Leases [Abstract]
Lease receivables (undiscounted)	¥ 2,046,277	¥ 1,855,125
Adjustments:
Discounted unguaranteed residual value	10,278	12,439
Initial direct cost on sales type and direct financing leases	32,780	27,695
Deferred selling profit	(350,553)	(306,316)
Net investment in sales type and direct financing leases	¥ 1,738,782	¥ 1,588,943

Lease Transactions (Maturity of

Lease Transactions (Maturity of the Lease Payment Receivables of Sales Type and Direct Financing Lease Transactions) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
Leases [Abstract]
2024	¥ 507,241
2025	466,812
2026	387,246
2027	274,201
2028	205,295
2029 and thereafter	205,482
Total undiscounted cash flows	2,046,277	¥ 1,855,125
Difference between undiscounted cash flows and the lease receivables recognized on balance sheet	(307,495)
Amount on balance sheet	¥ 1,738,782

Income Taxes (Income before Inc

Income Taxes (Income before Income Tax Expense by Jurisdiction) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Income Taxes [Line Items]
Total before tax	¥ 656,734	¥ (58,727)	¥ 1,608,342
Domestic income (loss)
Income Taxes [Line Items]
Total before tax	(588,227)	(886,921)	575,101
Foreign income
Income Taxes [Line Items]
Total before tax	¥ 1,244,961	¥ 828,194	¥ 1,033,241

Income Taxes (Detail of Current

Income Taxes (Detail of Current and Deferred Income Tax Expense (Benefit)) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Current:
Domestic	¥ 250,780	¥ 243,993	¥ 95,183
Foreign	203,409	112,164	83,492
Total	454,189	356,157	178,675
Deferred:
Domestic	(348,997)	(308,214)	310,490
Foreign	(78,779)	(62,454)	(44,217)
Total	(427,776)	(370,668)	266,273
Income tax expense (benefit)	26,413	(14,511)	444,948
Income tax expense (benefit) reported in Accumulated OCI relating to:
Investment securities	(66,401)	(87,628)	1,146
Debt valuation adjustments	7,858	10,296	(36,792)
Derivatives qualifying for cash flow hedges	1,594	(4,968)	12,244
Defined benefit plans	(677)	19,039	139,883
Foreign currency translation adjustments	86,576	96,742	(3,368)
Other Comprehensive Income (Loss), Tax (expense) or benefit	28,950	33,481	113,113
Total	¥ 55,363	¥ 18,970	¥ 558,061

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Income Taxes [Line Items]
Approximate effective statutory rate of corporate income tax	30.60%	30.60%	30.60%
Undistributed earnings of foreign subsidiaries	¥ 66,897	¥ 108,311
Operating loss carryforwards	221,609
Tax credit carryforwards	¥ 57,084
Requirements of Japanese Tax Law for Domestic Company to Exclude from Taxable Income Dividend Received from Foreign Company
Income Taxes [Line Items]
Percentage of dividend that can be excluded from the taxable income	95%
Percentage of taxable dividends over the amount received from certain foreign subsidiaries	5%
Requirements of Japanese Tax Law for Domestic Company to Exclude from Taxable Income Dividend Received from Foreign Company | Minimum
Income Taxes [Line Items]
Percentage of outstanding shares held in a foreign company who declared a dividend	25%
Continuous holding period on the date the dividend is declared by a foreign company	6 months

Income Taxes (Reconciliation of

Income Taxes (Reconciliation of Effective Income Tax Rates) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Reconciliation of effective income tax rate:
Combined normal effective statutory tax rate	30.60%	30.60%	30.60%
Nondeductible expenses	0.80%	(12.00%)	0.30%
Impairment of goodwill	1.50%	0%	2.40%
Foreign tax credit and payments	(4.70%)	28.70%	(0.90%)
Lower tax rates applicable to income of subsidiaries	(5.30%)	30.80%	(1.00%)
Change in valuation allowance	(10.50%)	(90.10%)	(0.90%)
Taxation for gain on sale of shares in subsidiary	3.40%	0%	0%
Nontaxable dividends received	(14.80%)	85.10%	(1.90%)
Undistributed earnings of subsidiaries	(0.30%)	(25.60%)	0%
Tax and interest expense for uncertainty in income taxes	0%	(10.80%)	(0.10%)
Noncontrolling interest income	0.30%	(0.70%)	0.10%
Effect of changes in tax laws	0.60%	(2.40%)	(0.10%)
Expiration of loss carryforward	0.10%	(7.00%)	0.10%
Other—net	2.30%	(1.90%)	(0.90%)
Effective income tax rate	4%	24.70%	27.70%
Increase in tax expense previously not recognized	¥ 22,250
Increase in tax expense previously not recognized, percentage	3.40%

Income Taxes (Components of Net

Income Taxes (Components of Net Deferred Tax Assets) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
Deferred tax assets:
Allowance for credit losses	¥ 418,732	¥ 462,303
Operating loss carryforwards	99,870	99,566
Loans	561	37
Accrued liabilities and other	413,587	309,017
Premises and equipment	119,395	124,419
Derivative financial instruments	303,644	154,237
Obligations under operating leases	88,088	106,864
Valuation allowance	(153,053)	(184,932)
Total deferred tax assets	1,290,824	1,071,511
Deferred tax liabilities:
Investment securities (including trading account assets at fair value under the fair value option)	379,581	605,443
Intangible assets	65,973	69,276
Lease transactions	12,514	47,432
Defined benefit plans	50,730	102,998
Investments in subsidiaries and affiliates	639,592	506,829
Right-of-use assets of operating leases	64,741	77,274
Other	103,915	113,335
Total deferred tax liabilities	1,317,046	1,522,587
Net deferred tax liabilities	¥ (26,222)	¥ (451,076)

Income Taxes (Operating Loss an

Income Taxes (Operating Loss and Tax Credit Carryforwards) (Detail) ¥ in Millions	Mar. 31, 2023 JPY (¥)
Operating Loss and Tax Credit Carryforwards [Line Items]
Operating loss carryforwards	¥ 221,609
Tax credit carryforwards	57,084
2024
Operating Loss and Tax Credit Carryforwards [Line Items]
Operating loss carryforwards	5,344
Tax credit carryforwards	649
2025
Operating Loss and Tax Credit Carryforwards [Line Items]
Operating loss carryforwards	84,378
Tax credit carryforwards	146
2026
Operating Loss and Tax Credit Carryforwards [Line Items]
Operating loss carryforwards	53,457
Tax credit carryforwards	145
2027
Operating Loss and Tax Credit Carryforwards [Line Items]
Operating loss carryforwards	624
Tax credit carryforwards	143
2028
Operating Loss and Tax Credit Carryforwards [Line Items]
Operating loss carryforwards	3,108
Tax credit carryforwards	143
2028
Operating Loss and Tax Credit Carryforwards [Line Items]
Operating loss carryforwards	636
Tax credit carryforwards	347
2030 and thereafter
Operating Loss and Tax Credit Carryforwards [Line Items]
Operating loss carryforwards	35,173
Tax credit carryforwards	46,957
No definite expiration date
Operating Loss and Tax Credit Carryforwards [Line Items]
Operating loss carryforwards	38,889
Tax credit carryforwards	¥ 8,554

Income Taxes (Roll-forward of U

Income Taxes (Roll-forward of Unrecognized Tax Benefits) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Roll-forward of unrecognized tax benefits:
Balance at beginning of fiscal year	¥ 21,794	¥ 13,829	¥ 19,249
Gross amount of increases for current year’s tax positions	451	28	202
Gross amount of decreases for current year’s tax positions	0	0	(1,919)
Gross amount of increases for prior years’ tax positions	279	6,320	489
Gross amount of decreases for prior years’ tax positions	(166)	(183)	(2,329)
Decreases due to lapse of applicable statutes of limitations	(116)	(8)	(116)
Foreign exchange translation and other	3,158	1,808	(1,747)
Balance at end of fiscal year	¥ 25,400	¥ 21,794	¥ 13,829

Income Taxes (Roll-forward of I

Income Taxes (Roll-forward of Interest and Penalties Recognized) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Balance at beginning of fiscal year	¥ 2,848	¥ 2,417	¥ 2,612
Total interest and penalties in the consolidated statements of operations	1,052	(156)	398
Total cash settlements, foreign exchange translation and other	371	275	203
Balance at end of fiscal year	¥ 2,167	¥ 2,848	¥ 2,417

Pledged Assets and Collateral_2

Pledged Assets and Collateral (Assets Mortgaged, Pledged, or Otherwise Subject to Lien) (Detail) ¥ in Millions	Mar. 31, 2023 JPY (¥)
Financial Instruments Owned and Pledged as Collateral [Line Items]
Pledged assets	¥ 50,336,551
Trading account securities
Financial Instruments Owned and Pledged as Collateral [Line Items]
Pledged assets	12,699,080
Investment securities
Financial Instruments Owned and Pledged as Collateral [Line Items]
Pledged assets	25,666,561
Loans
Financial Instruments Owned and Pledged as Collateral [Line Items]
Pledged assets	11,950,542
Other
Financial Instruments Owned and Pledged as Collateral [Line Items]
Pledged assets	¥ 20,368

Pledged Assets and Collateral_3

Pledged Assets and Collateral (Pledged Assets Classified by Type of Liabilities) (Detail) ¥ in Millions	Mar. 31, 2023 JPY (¥)
Financial Instruments Owned and Pledged as Collateral [Line Items]
Pledged assets	¥ 50,336,551
Deposits
Financial Instruments Owned and Pledged as Collateral [Line Items]
Pledged assets	14,985
Payables under repurchase agreements and securities lending transactions
Financial Instruments Owned and Pledged as Collateral [Line Items]
Pledged assets	27,968,380
Other short-term borrowings and long-term debt
Financial Instruments Owned and Pledged as Collateral [Line Items]
Pledged assets	22,280,877
Other
Financial Instruments Owned and Pledged as Collateral [Line Items]
Pledged assets	¥ 72,309

Pledged Assets and Collateral_4

Pledged Assets and Collateral (Narrative) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Financial Instruments Owned and Pledged as Collateral [Line Items]
Investment securities pledged for acting as a collection agent of public funds	¥ 19,436,978
Reserve funds included in Cash and due from banks and Interest-earning deposits in other banks	2,918,282	¥ 2,991,833
Total assets at end of fiscal year	381,735,733	367,650,018	¥ 353,824,625
Fair value of securities accepted as collateral that is permitted to be sold or repledged	32,111,000	31,167,000
Fair value of securities accepted as collateral that was sold or repledged	24,063,000	23,699,000
Cash collateral pledged for derivative transactions included in Other assets	2,585,837	2,893,178
Cash collateral received for derivative transactions included in Other liabilities	1,318,338	¥ 1,017,580
Asset pledged as collateral without right
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total assets at end of fiscal year	¥ 35,115,000

Deposits (Narrative) (Detail)

Deposits (Narrative) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
Deposits [Line Items]
Time deposits, including certificates of deposits ("CDs"), issued in amount of JPY10 million or more, Domestic deposits	¥ 60,245,700	¥ 54,819,050
Minimum
Deposits [Line Items]
Issue amount of domestic time deposits in Japanese Yen	¥ 10

Deposits (Time Deposits by Matu

Deposits (Time Deposits by Maturity) (Detail) ¥ in Millions	Mar. 31, 2023 JPY (¥)
Domestic
Maturities of time deposits:
Due in one year or less	¥ 31,966,328
Due after one year through two years	4,400,809
Due after two years through three years	2,327,682
Due after three years through four years	454,931
Due after four years through five years	448,420
Due after five years	706,729
Total	40,304,899
Foreign
Maturities of time deposits:
Due in one year or less	29,492,912
Due after one year through two years	504,083
Due after two years through three years	170,605
Due after three years through four years	99,234
Due after four years through five years	40,959
Due after five years	32,825
Total	¥ 30,340,618

Call Money and Funds Purchase_2

Call Money and Funds Purchased (Summary of Funds Transactions) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Call Money and Funds Purchased Transactions [Line Items]
Amount	¥ 3,437,614	¥ 2,416,313
Weighted average interest rate	0.01%	0.06%
Minimum
Call Money and Funds Purchased Transactions [Line Items]
Principal range of maturities		1 day
Maximum
Call Money and Funds Purchased Transactions [Line Items]
Principal range of maturities		30 days

Due to Trust Account, Short-t_3

Due to Trust Account, Short-term Borrowings and Long-term Debt (Summary of Due to Trust Account Transactions) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
Debt Disclosure [Abstract]
Amount outstanding at end of fiscal year	¥ 5,871,244	¥ 6,307,463
Weighted average interest rate on outstanding balance at end of fiscal year	0%	0%

Due to Trust Account, Short-t_4

Due to Trust Account, Short-term Borrowings and Long-term Debt (Narrative) (Detail) € in Millions, ¥ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 JPY (¥)	Mar. 31, 2023 USD ($)	Mar. 31, 2023 EUR (€)	Mar. 31, 2022 JPY (¥)
Debt Instrument [Line Items]
Unused lines of credit for financing	¥ 3,321,061			¥ 4,741,464
Aggregated principal amount of long term debt issued	¥ 624,500
Minimum TLAC ratio, required by March 31, 2022, over risk weighted assets	18%
Minimum TLAC ratio, required by March 31, 2022, over leverage ratio denominator	6.75%
Basel III
Debt Instrument [Line Items]
Floor of Common Equity Tier 1 ratio, which leads the Group's discretion over unsecured perpetual subordinated Additional Tier 1 notes	5.125%
Unsecured Perpetual Subordinated Additional Tier 1 Notes | Basel III
Debt Instrument [Line Items]
Aggregated principal amount of long term debt issued	¥ 90,000
Bonds for TLAC | Euro
Debt Instrument [Line Items]
Aggregated principal amount of long term debt issued	444,446		€ 3,050
Bonds for TLAC | Dollars
Debt Instrument [Line Items]
Aggregated principal amount of long term debt issued	¥ 2,171,865	$ 16,265

Due to Trust Account, Short-t_5

Due to Trust Account, Short-term Borrowings and Long-term Debt (Components of Other Short-term Borrowings) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
Short-term Debt [Line Items]
Total	¥ 8,440,850	¥ 16,543,222
Less unamortized discount	2,836	85
Other short-term borrowings—net	¥ 8,438,014	¥ 16,543,137
Weighted average interest rate on outstanding balance at end of fiscal year	2.83%	0.09%
Domestic offices:
Short-term Debt [Line Items]
Total	¥ 3,382,396	¥ 12,602,225
Domestic offices: | Commercial paper
Short-term Debt [Line Items]
Total	1,123,528	1,491,509
Domestic offices: | Borrowings from the Bank of Japan
Short-term Debt [Line Items]
Total	1,186,251	10,231,483
Domestic offices: | Borrowings from other financial institutions
Short-term Debt [Line Items]
Total	95,785	68,384
Domestic offices: | Other
Short-term Debt [Line Items]
Total	976,832	810,849
Foreign offices:
Short-term Debt [Line Items]
Total	5,058,454	3,940,997
Other short-term borrowings—net	5,058,454	3,940,997
Foreign offices: | Commercial paper
Short-term Debt [Line Items]
Total	4,771,323	3,776,737
Foreign offices: | Borrowings from other financial institutions
Short-term Debt [Line Items]
Total	160,292	82,914
Foreign offices: | Short-term debentures
Short-term Debt [Line Items]
Total	21,338	22,059
Foreign offices: | Other
Short-term Debt [Line Items]
Total	¥ 105,501	¥ 59,287

Due to Trust Account, Short-t_6

Due to Trust Account, Short-term Borrowings and Long-term Debt (Components of Long-term Debt) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
Debt Instrument [Line Items]
Obligations under finance leases	¥ 19,470	¥ 16,104
Total	39,087,785	34,710,293
Debt issuance cost	(16,030)	(13,694)
Total, after debt issuance costs	39,071,755	34,696,599
MUFG:
Debt Instrument [Line Items]
Obligations under finance leases	1,720	3,326
Total	12,826,063	10,083,549
MUFG: | Unsubordinated Debt
Debt Instrument [Line Items]
Long-term debt	9,461,503	6,712,325
MUFG: | Unsubordinated Debt | Fixed Rate Bonds I
Debt Instrument [Line Items]
Long-term debt	¥ 7,226,689	5,501,311
MUFG: | Unsubordinated Debt | Fixed Rate Bonds I | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	0.85%
MUFG: | Unsubordinated Debt | Fixed Rate Bonds I | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	5.72%
MUFG: | Unsubordinated Debt | Fixed Rate Bonds II
Debt Instrument [Line Items]
Long-term debt	¥ 578,508	508,524
MUFG: | Unsubordinated Debt | Fixed Rate Bonds II | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	0.34%
MUFG: | Unsubordinated Debt | Fixed Rate Bonds II | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	3.56%
MUFG: | Unsubordinated Debt | Fixed Rate Bonds III
Debt Instrument [Line Items]
Long-term debt	¥ 37,425	37,424
MUFG: | Unsubordinated Debt | Fixed Rate Bonds III | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	2.08%
MUFG: | Unsubordinated Debt | Fixed Rate Bonds III | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	4.05%
MUFG: | Unsubordinated Debt | Adjustable Rate Bonds I
Debt Instrument [Line Items]
Long-term debt	¥ 451,500	95,900
MUFG: | Unsubordinated Debt | Adjustable Rate Bonds I | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	0.14%
MUFG: | Unsubordinated Debt | Adjustable Rate Bonds I | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	1.47%
MUFG: | Unsubordinated Debt | Adjustable Rate Bonds II
Debt Instrument [Line Items]
Long-term debt	¥ 408,016	68,350
MUFG: | Unsubordinated Debt | Adjustable Rate Bonds II | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	0.34%
MUFG: | Unsubordinated Debt | Adjustable Rate Bonds II | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	3.27%
MUFG: | Unsubordinated Debt | Adjustable Rate Bonds III
Debt Instrument [Line Items]
Long-term debt	¥ 272,000	0
MUFG: | Unsubordinated Debt | Adjustable Rate Bonds III | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	0.76%
MUFG: | Unsubordinated Debt | Adjustable Rate Bonds III | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	1.86%
MUFG: | Unsubordinated Debt | Floating Rate Bonds I
Debt Instrument [Line Items]
Long-term debt	¥ 400,487	416,171
MUFG: | Unsubordinated Debt | Floating Rate Bonds I | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	5.53%
MUFG: | Unsubordinated Debt | Floating Rate Bonds I | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	6.16%
MUFG: | Unsubordinated Debt | Floating Rate Bonds II
Debt Instrument [Line Items]
Long-term debt	¥ 51,002	47,845
Interest rate, stated percentage	3.25%
MUFG: | Unsubordinated Debt | Floating Rate Bonds III
Debt Instrument [Line Items]
Long-term debt	¥ 35,876	36,800
Interest rate, stated percentage	4.52%
MUFG: | Subordinated Debt
Debt Instrument [Line Items]
Long-term debt	¥ 3,362,840	3,367,898
MUFG: | Subordinated Debt | Fixed Rate Bonds I
Debt Instrument [Line Items]
Long-term debt	¥ 872,810	771,014
MUFG: | Subordinated Debt | Fixed Rate Bonds I | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	0.37%
MUFG: | Subordinated Debt | Fixed Rate Bonds I | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	1.56%
MUFG: | Subordinated Debt | Adjustable Rate Bonds I
Debt Instrument [Line Items]
Long-term debt	¥ 908,541	905,925
MUFG: | Subordinated Debt | Adjustable Rate Bonds I | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	0.29%
MUFG: | Subordinated Debt | Adjustable Rate Bonds I | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	1.21%
MUFG: | Subordinated Debt | Adjustable Rate Bonds II
Debt Instrument [Line Items]
Long-term debt	¥ 1,366,633	1,486,734
MUFG: | Subordinated Debt | Adjustable Rate Bonds II | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	0.82%
MUFG: | Subordinated Debt | Adjustable Rate Bonds II | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	2.50%
MUFG: | Subordinated Debt | Adjustable Rate Borrowings I
Debt Instrument [Line Items]
Long-term debt	¥ 34,000	31,500
MUFG: | Subordinated Debt | Adjustable Rate Borrowings I | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	0.30%
MUFG: | Subordinated Debt | Adjustable Rate Borrowings I | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	0.72%
MUFG: | Subordinated Debt | Adjustable Rate Borrowings II
Debt Instrument [Line Items]
Long-term debt	¥ 94,856	86,725
MUFG: | Subordinated Debt | Adjustable Rate Borrowings II | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	0.85%
MUFG: | Subordinated Debt | Adjustable Rate Borrowings II | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	1.33%
MUFG: | Subordinated Debt | Floating Rate Borrowings I
Debt Instrument [Line Items]
Long-term debt	¥ 0	86,000
MUFG: | Subordinated Debt | Floating Rate Borrowings I | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	0.57%
MUFG: | Subordinated Debt | Floating Rate Borrowings I | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	0.79%
MUFG: | Subordinated Debt | Fixed Rate Borrowings I
Debt Instrument [Line Items]
Long-term debt	¥ 86,000	0
MUFG: | Subordinated Debt | Fixed Rate Borrowings I | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	0.57%
MUFG: | Subordinated Debt | Fixed Rate Borrowings I | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	0.79%
MUFG Bank:
Debt Instrument [Line Items]
Obligations under finance leases	¥ 4,652	4,419
Total	23,276,073	21,396,282
MUFG Bank: | Unsubordinated Debt
Debt Instrument [Line Items]
Long-term debt	22,565,600	20,540,145
MUFG Bank: | Unsubordinated Debt | Fixed Rate Bonds I
Debt Instrument [Line Items]
Long-term debt	¥ 37,300	72,400
MUFG Bank: | Unsubordinated Debt | Fixed Rate Bonds I | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	0.63%
MUFG Bank: | Unsubordinated Debt | Fixed Rate Bonds I | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	2.34%
MUFG Bank: | Unsubordinated Debt | Fixed Rate Bonds II
Debt Instrument [Line Items]
Long-term debt	¥ 1,073,796	1,052,443
MUFG Bank: | Unsubordinated Debt | Fixed Rate Bonds II | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	0%
MUFG Bank: | Unsubordinated Debt | Fixed Rate Bonds II | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	4.70%
MUFG Bank: | Unsubordinated Debt | Fixed Rate Bonds III
Debt Instrument [Line Items]
Long-term debt	¥ 6,557	6,152
Interest rate, stated percentage	1.81%
MUFG Bank: | Unsubordinated Debt | Adjustable Rate Borrowings I
Debt Instrument [Line Items]
Long-term debt	¥ 86,127	0
MUFG Bank: | Unsubordinated Debt | Adjustable Rate Borrowings I | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	5.14%
MUFG Bank: | Unsubordinated Debt | Adjustable Rate Borrowings I | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	5.54%
MUFG Bank: | Unsubordinated Debt | Floating Rate Borrowings I
Debt Instrument [Line Items]
Long-term debt	¥ 671,936	714,718
MUFG Bank: | Unsubordinated Debt | Floating Rate Borrowings I | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	4.49%
MUFG Bank: | Unsubordinated Debt | Floating Rate Borrowings I | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	8.76%
MUFG Bank: | Unsubordinated Debt | Fixed Rate Borrowings I
Debt Instrument [Line Items]
Long-term debt	¥ 20,582,218	18,582,830
MUFG Bank: | Unsubordinated Debt | Fixed Rate Borrowings I | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	0%
MUFG Bank: | Unsubordinated Debt | Fixed Rate Borrowings I | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	0.25%
MUFG Bank: | Unsubordinated Debt | Fixed Rate Borrowings II
Debt Instrument [Line Items]
Long-term debt	¥ 7,601	8,371
MUFG Bank: | Unsubordinated Debt | Fixed Rate Borrowings II | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	2.93%
MUFG Bank: | Unsubordinated Debt | Floating Rate Borrowings II
Debt Instrument [Line Items]
Long-term debt	¥ 100,065	103,231
MUFG Bank: | Unsubordinated Debt | Floating Rate Borrowings II | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	2.30%
MUFG Bank: | Unsubordinated Debt | Floating Rate Borrowings II | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	3.39%
MUFG Bank: | Subordinated Debt
Debt Instrument [Line Items]
Long-term debt	¥ 260,000	332,000
MUFG Bank: | Subordinated Debt | Fixed Rate Bonds I
Debt Instrument [Line Items]
Long-term debt	¥ 175,500	236,000
MUFG Bank: | Subordinated Debt | Fixed Rate Bonds I | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	1.95%
MUFG Bank: | Subordinated Debt | Fixed Rate Bonds I | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	2.91%
MUFG Bank: | Subordinated Debt | Adjustable Rate Borrowings I
Debt Instrument [Line Items]
Long-term debt	¥ 10,000	10,000
Interest rate, stated percentage	1.06%
MUFG Bank: | Subordinated Debt | Floating Rate Borrowings I
Debt Instrument [Line Items]
Long-term debt	¥ 15,000	15,000
Interest rate, stated percentage	0.27%
MUFG Bank: | Subordinated Debt | Fixed Rate Borrowings I
Debt Instrument [Line Items]
Long-term debt	¥ 59,500	71,000
MUFG Bank: | Subordinated Debt | Fixed Rate Borrowings I | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	0.44%
MUFG Bank: | Subordinated Debt | Fixed Rate Borrowings I | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	2.24%
MUFG Bank: | #REF!
Debt Instrument [Line Items]
Long-term debt	¥ 445,821	519,718
MUFG Bank: | #REF! | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	0.13%
MUFG Bank: | #REF! | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	10%
Other subsidiaries:
Debt Instrument [Line Items]
Obligations under finance leases	¥ 13,098	8,359
Total	2,985,649	3,230,462
Other subsidiaries: | Unsubordinated Debt
Debt Instrument [Line Items]
Long-term debt	2,699,131	2,893,447
Other subsidiaries: | Unsubordinated Debt | Fixed Rate Borrowings, Bonds and Notes I
Debt Instrument [Line Items]
Long-term debt	¥ 1,012,649	1,088,884
Other subsidiaries: | Unsubordinated Debt | Fixed Rate Borrowings, Bonds and Notes I | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	0%
Other subsidiaries: | Unsubordinated Debt | Fixed Rate Borrowings, Bonds and Notes I | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	23%
Other subsidiaries: | Unsubordinated Debt | Fixed Rate Borrowings, Bonds and Notes II
Debt Instrument [Line Items]
Long-term debt	¥ 95,593	124,841
Other subsidiaries: | Unsubordinated Debt | Fixed Rate Borrowings, Bonds and Notes II | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	0%
Other subsidiaries: | Unsubordinated Debt | Fixed Rate Borrowings, Bonds and Notes II | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	50%
Other subsidiaries: | Unsubordinated Debt | Fixed Rate Borrowings, Bonds and Notes III
Debt Instrument [Line Items]
Long-term debt	¥ 1,148	10,796
Interest rate, stated percentage	0%
Other subsidiaries: | Unsubordinated Debt | Fixed Rate Borrowings, Bonds and Notes IV
Debt Instrument [Line Items]
Long-term debt	¥ 154,698	230,630
Other subsidiaries: | Unsubordinated Debt | Fixed Rate Borrowings, Bonds and Notes IV | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	0%
Other subsidiaries: | Unsubordinated Debt | Fixed Rate Borrowings, Bonds and Notes IV | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	6.90%
Other subsidiaries: | Unsubordinated Debt | Fixed Rate Borrowings, Bonds and Notes V
Debt Instrument [Line Items]
Long-term debt	¥ 322,457	306,778
Other subsidiaries: | Unsubordinated Debt | Fixed Rate Borrowings, Bonds and Notes V | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	9.50%
Other subsidiaries: | Unsubordinated Debt | Fixed Rate Borrowings, Bonds and Notes V | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	0%
Other subsidiaries: | Unsubordinated Debt | Floating/Adjustable Rate Borrowings, Bonds and Notes I
Debt Instrument [Line Items]
Long-term debt	¥ 1,009,268	1,000,691
Other subsidiaries: | Unsubordinated Debt | Floating/Adjustable Rate Borrowings, Bonds and Notes I | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	0%
Other subsidiaries: | Unsubordinated Debt | Floating/Adjustable Rate Borrowings, Bonds and Notes I | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	38.50%
Other subsidiaries: | Unsubordinated Debt | Floating Rate Borrowings, Bonds and Notes I
Debt Instrument [Line Items]
Long-term debt	¥ 103,125	130,597
Other subsidiaries: | Unsubordinated Debt | Floating Rate Borrowings, Bonds and Notes I | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	0%
Other subsidiaries: | Unsubordinated Debt | Floating Rate Borrowings, Bonds and Notes I | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	43%
Other subsidiaries: | Unsubordinated Debt | Adjustable Rate Bonds and Notes I
Debt Instrument [Line Items]
Long-term debt	¥ 193	230
Other subsidiaries: | Unsubordinated Debt | Adjustable Rate Bonds and Notes I | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	0.10%
Other subsidiaries: | Unsubordinated Debt | Adjustable Rate Bonds and Notes I | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	1%
Other subsidiaries: | Subordinated Debt
Debt Instrument [Line Items]
Long-term debt	¥ 273,420	328,655
Other subsidiaries: | Subordinated Debt | Fixed Rate Borrowings, Bonds and Notes I
Debt Instrument [Line Items]
Long-term debt	¥ 34,700	114,946
Other subsidiaries: | Subordinated Debt | Fixed Rate Borrowings, Bonds and Notes I | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	1.53%
Other subsidiaries: | Subordinated Debt | Fixed Rate Borrowings, Bonds and Notes I | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	2.61%
Other subsidiaries: | Subordinated Debt | Fixed Rate Borrowings, Bonds and Notes II
Debt Instrument [Line Items]
Long-term debt	¥ 2,329	2,262
Other subsidiaries: | Subordinated Debt | Fixed Rate Borrowings, Bonds and Notes II | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	7.50%
Other subsidiaries: | Subordinated Debt | Fixed Rate Borrowings, Bonds and Notes II | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	8%
Other subsidiaries: | Subordinated Debt | Fixed Rate Borrowings, Bonds and Notes III
Debt Instrument [Line Items]
Long-term debt	¥ 231,138	208,581
Other subsidiaries: | Subordinated Debt | Fixed Rate Borrowings, Bonds and Notes III | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	3%
Other subsidiaries: | Subordinated Debt | Fixed Rate Borrowings, Bonds and Notes III | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	4.30%
Other subsidiaries: | Subordinated Debt | Floating Rate Borrowings Bonds And Notes II
Debt Instrument [Line Items]
Long-term debt	¥ 5,253	2,866
Interest rate, stated percentage	9.86%
Other subsidiaries: | #REF!
Debt Instrument [Line Items]
Long-term debt	¥ 0	¥ 1

Due to Trust Account, Short-t_7

Due to Trust Account, Short-term Borrowings and Long-term Debt (Summary of Subsequent Maturities of Long-term Debt) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
Long-term debt by maturity:
2024	¥ 2,830,247
2025	20,013,765
2026	3,831,450
2027	1,003,013
2028	2,615,782
2028 and thereafter	8,793,528
Total	39,087,785	¥ 34,710,293
MUFG
Long-term debt by maturity:
2024	899,334
2025	1,331,578
2026	2,267,854
2027	580,729
2028	1,346,562
2028 and thereafter	6,400,006
Total	12,826,063	10,083,549
BK
Long-term debt by maturity:
2024	1,239,768
2025	18,187,331
2026	1,245,954
2027	164,253
2028	1,167,991
2028 and thereafter	1,270,776
Total	23,276,073	21,396,282
Other subsidiaries
Long-term debt by maturity:
2024	691,145
2025	494,856
2026	317,642
2027	258,031
2028	101,229
2028 and thereafter	1,122,746
Total	¥ 2,985,649	¥ 3,230,462

Severance Indemnities and Pen_3

Severance Indemnities and Pension Plans (Narrative) (Detail) ¥ in Millions	12 Months Ended
	Mar. 31, 2023 JPY (¥) fund	Mar. 31, 2022 JPY (¥)	Mar. 31, 2021 JPY (¥)
Defined Benefit Plan Disclosure [Line Items]
Profit not recognized	¥ 223,273
Comprehensive loss not recognized	(20,291)
Eligible age for lifetime annuity payments			65 months
Special lump-sum early termination benefits charged to operations for the fiscal year	16,888	¥ 16,235	¥ 16,716
Postemployment retirement benefits
Defined Benefit Plan Disclosure [Line Items]
Profit not recognized	2,086
Comprehensive loss not recognized	¥ 27,593
Pension benefits and SIPs
Defined Benefit Plan Disclosure [Line Items]
Number of major fund types | fund	4
Domestic, Japan | Pension benefits and SIPs | Other debt securities and Japanese debt securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of debt securities issued by the MUFG Group included in plan assets	¥ 1,614	¥ 625
Percentage of fair value of debt securities issued by the MUFG Group to total fair value of plan assets	0.05%	0.02%
Domestic, Japan | Pension benefits and SIPs | Japanese marketable equity securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of common stock issued by the MUFG Group included in plan assets	¥ 5,284	¥ 4,606
Percentage of fair value of common stock issued by the MUFG Group to total fair value of plan assets	0.18%	0.13%

Severance Indemnities and Pen_4

Severance Indemnities and Pension Plans (Components of Net Periodic Cost of Pension Benefits and Other Benefits) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit cost (income)	¥ 47,740	¥ (25,675)	¥ 2,804
Domestic, Japan | Pension benefits and SIPs
Defined Benefit Plan Disclosure [Line Items]
Service cost—benefits earned during the fiscal year	41,026	44,160	46,861
Interest cost on projected benefit obligation	14,356	11,995	11,091
Expected return on plan assets	(84,084)	(81,902)	(71,078)
Amortization of net actuarial loss (gain)	1,446	770	17,019
Amortization of prior service cost	(1,396)	(1,280)	(1,205)
Loss (gain) on settlements and curtailment	(4,860)	(5,820)	(4,605)
Net periodic benefit cost (income)	(33,512)	(32,077)	(1,917)
Foreign offices and subsidiaries | Pension benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost—benefits earned during the fiscal year	16,808	16,853	13,947
Interest cost on projected benefit obligation	20,573	11,233	14,295
Expected return on plan assets	(44,590)	(33,269)	(31,161)
Amortization of net actuarial loss (gain)	7,534	16,573	11,560
Amortization of prior service cost	(3,124)	(2,802)	(2,614)
Loss (gain) on settlements and curtailment	84,345	44	30
Net periodic benefit cost (income)	81,546	8,632	6,057
One-time write off	84,345
Foreign offices and subsidiaries | Other benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost—benefits earned during the fiscal year	97	140	229
Interest cost on projected benefit obligation	1,002	494	793
Expected return on plan assets	(3,200)	(2,415)	(2,118)
Amortization of net actuarial loss (gain)	155	(64)	208
Amortization of prior service cost	(432)	(385)	(448)
Loss (gain) on settlements and curtailment	0	0	0
Net periodic benefit cost (income)	¥ (2,378)	¥ (2,230)	¥ (1,336)

Severance Indemnities and Pen_5

Severance Indemnities and Pension Plans (Summary of Assumptions Used in Computation) (Detail)	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Domestic, Japan | Pension benefits and SIPs
Defined Benefit Plan Disclosure [Line Items]
Discount rates in determining expense	0.86%	0.71%	0.63%
Discount rates in determining benefit obligation	1.36%	0.86%	0.71%
Rates of increase in future compensation level for determining expense	3.46%	3.46%	3.46%
Rates of increase in future compensation level for determining benefit obligation	3.47%	3.46%	3.46%
Expected rates of return on plan assets	2.93%	2.89%	2.93%
Cash balance crediting rate for determining expense	2.46%	2.46%	2.46%
Cash balance crediting rate for determining benefit obligation	2.46%	2.46%	2.46%
Foreign offices and subsidiaries | Pension benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rates in determining expense	2.51%	2.19%	2.94%
Discount rates in determining benefit obligation	4.76%	2.78%	2.34%
Rates of increase in future compensation level for determining expense	5.04%	5.09%	5.12%
Rates of increase in future compensation level for determining benefit obligation	5.09%	5.04%	5.09%
Expected rates of return on plan assets	4.86%	5.91%	6.19%
Cash balance crediting rate for determining expense	1.94%	1.62%	2.39%
Cash balance crediting rate for determining benefit obligation	3.72%	1.94%	1.62%
Foreign offices and subsidiaries | Other benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rates in determining expense	2.21%	1.82%	2.72%
Discount rates in determining benefit obligation	4.68%	2.63%	2.23%
Rates of increase in future compensation level for determining expense	0%	0%	0%
Rates of increase in future compensation level for determining benefit obligation	0%	0%	0%
Expected rates of return on plan assets	5.50%	7%	7%
Cash balance crediting rate for determining expense	0%	0%	0%
Cash balance crediting rate for determining benefit obligation	0%	0%	0%

Severance Indemnities and Pen_6

Severance Indemnities and Pension Plans (Assumed Health Care Cost Trend Rates and Effect of a One-percentage-point Change for Foreign Offices and Subsidiaries) (Detail)	Mar. 31, 2023	Mar. 31, 2022
MUAH
Defined benefit plan, assumed health care cost trend rates for the next fiscal year:
Initial trend rate	0%	4.13%
Ultimate trend rate	0%	3.77%
Other than MUAH
Defined benefit plan, assumed health care cost trend rates for the next fiscal year:
Initial trend rate	7%	6.50%
Ultimate trend rate	4.50%	4.50%

Severance Indemnities and Pen_7

Severance Indemnities and Pension Plans (Combined Funded Status and Amounts Recognized in Consolidated Balance Sheets) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Amounts recognized in the consolidated balance sheets:
Prepaid benefit cost	¥ 1,335,369	¥ 1,356,603
Accrued benefit cost	(89,092)	(89,062)
Domestic, Japan | Non-contributory pension benefits and SIP
Change in benefit obligation:
Benefit obligation at beginning of fiscal year	1,692,105	1,753,483
Service cost	41,026	44,160
Interest cost	14,356	11,995
Plan participants’ contributions	0	0
Acquisitions/ Divestitures	584	242
Amendments	0	(1,054)
Actuarial loss (gain)	(113,554)	(28,814)
Benefits paid	(65,897)	(65,853)
Lump-sum payment	(20,179)	(21,570)
Translation adjustments and other	0	0
Benefit obligation at end of fiscal year	1,547,273	1,692,105	¥ 1,753,483
Change in plan assets:
Fair value of plan assets at beginning of fiscal year	2,890,503	2,858,013
Actual return on plan assets	(76,526)	77,848
Employer contributions	26,734	20,487
Acquisitions/ Divestitures	(242)	8
Plan participants’ contributions	0	0
Benefits paid	(65,897)	(65,853)
Translation adjustments and other	0	0
Fair value of plan assets at end of fiscal year	2,774,572	2,890,503	2,858,013
Amounts recognized in the consolidated balance sheets:
Prepaid benefit cost	1,245,150	1,216,703
Accrued benefit cost	(17,851)	(18,305)
Net amount recognized	1,227,299	1,198,398
Plan assets, decrease related to buyout	327,203
Foreign offices and subsidiaries | Pension benefits
Change in benefit obligation:
Benefit obligation at beginning of fiscal year	619,739	580,953
Service cost	16,808	16,853	13,947
Interest cost	20,573	11,233	14,295
Plan participants’ contributions	0	0
Acquisitions/ Divestitures	77,231	130
Amendments	(1,250)	402
Actuarial loss (gain)	(98,693)	(24,611)
Benefits paid	(33,456)	(24,501)
Lump-sum payment	(4,476)	(3,591)
Translation adjustments and other	247,171	(63,131)
Benefit obligation at end of fiscal year	194,843	619,739	580,953
Change in plan assets:
Fair value of plan assets at beginning of fiscal year	705,864	604,404
Actual return on plan assets	(126,085)	49,277
Employer contributions	1,277	4,627
Acquisitions/ Divestitures	(100,438)	0
Plan participants’ contributions	0	0
Benefits paid	(33,456)	(24,501)
Translation adjustments and other	(231,343)	72,057
Fair value of plan assets at end of fiscal year	215,819	705,864	604,404
Amounts recognized in the consolidated balance sheets:
Prepaid benefit cost	89,109	153,861
Accrued benefit cost	(68,133)	(67,736)
Net amount recognized	20,976	86,125
Benefit obligation, decrease related to buyout		327,203
Foreign offices and subsidiaries | Other benefits
Change in benefit obligation:
Benefit obligation at beginning of fiscal year	30,791	31,354
Service cost	97	140	229
Interest cost	1,002	494	793
Plan participants’ contributions	689	433
Acquisitions/ Divestitures	3,818	0
Amendments	0	0
Actuarial loss (gain)	(5,329)	(2,269)
Benefits paid	(3,785)	(2,580)
Translation adjustments and other	(4,548)	(3,219)
Benefit obligation at end of fiscal year	24,195	30,791	31,354
Change in plan assets:
Fair value of plan assets at beginning of fiscal year	39,528	33,349
Actual return on plan assets	(6,722)	4,619
Acquisitions/ Divestitures	(5,649)	0
Plan participants’ contributions	689	433
Benefits paid	(3,785)	(2,580)
Translation adjustments and other	6,240	3,823
Fair value of plan assets at end of fiscal year	22,197	39,528	¥ 33,349
Amounts recognized in the consolidated balance sheets:
Prepaid benefit cost	1,110	12,104
Accrued benefit cost	(3,108)	(3,367)
Net amount recognized	(1,998)	8,737
Foreign offices and subsidiaries | Other benefits netting
Change in plan assets:
Employer contributions	¥ (8,104)	¥ (116)

Severance Indemnities and Pen_8

Severance Indemnities and Pension Plans (Aggregated Accumulated Benefit Obligations) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
Domestic, Japan | Pension benefits and SIPs
Defined Benefit Plan Disclosure [Line Items]
Aggregated accumulated benefit obligations	¥ 1,521,419	¥ 1,663,543
Foreign offices and subsidiaries | Pension benefits and other benefits
Defined Benefit Plan Disclosure [Line Items]
Aggregated accumulated benefit obligations	¥ 170,917	¥ 596,153

Severance Indemnities and Pen_9

Severance Indemnities and Pension Plans (Summary for Plans with Accumulated Benefit Obligations in Excess of Plan Assets) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
Domestic, Japan | Pension benefits and SIPs
Defined benefit plan, pension plans with accumulated benefit obligations in excess of plan assets:
Projected benefit obligations	¥ 24,918	¥ 25,327
Accumulated benefit obligations	24,918	25,327
Fair value of plan assets	7,315	7,223
Foreign offices and subsidiaries | Pension benefits and other benefits
Defined benefit plan, pension plans with accumulated benefit obligations in excess of plan assets:
Projected benefit obligations	81,128	87,876
Accumulated benefit obligations	62,308	67,612
Fair value of plan assets	¥ 12,995	¥ 20,139

Severance Indemnities and Pe_10

Severance Indemnities and Pension Plans (Amounts Recognized in Accumulated OCI) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
Domestic, Japan | Pension benefits and SIPs
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain)	¥ 32,257	¥ (18,183)
Prior service cost	(1,449)	(2,845)
Gross amount recognized in Accumulated OCI	30,808	(21,028)
Taxes	(52,367)	(36,389)
Net amount recognized in Accumulated OCI	(21,559)	(57,417)
Foreign offices and subsidiaries | Pension benefits
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain)	21,347	47,093
Prior service cost	(1,747)	(3,742)
Gross amount recognized in Accumulated OCI	19,600	43,351
Taxes	(6,135)	(12,092)
Net amount recognized in Accumulated OCI	13,465	31,259
Foreign offices and subsidiaries | Other benefits
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain)	2,729	(1,070)
Prior service cost	(1,375)	(1,650)
Gross amount recognized in Accumulated OCI	1,354	(2,720)
Taxes	(736)	616
Net amount recognized in Accumulated OCI	¥ 618	¥ (2,104)

Severance Indemnities and Pe_11

Severance Indemnities and Pension Plans (Amounts Recognized in OCI) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Domestic, Japan | Pension benefits and SIPs
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain) arising during the year	¥ 47,026	¥ (24,790)
Prior service cost arising during the year	0	(1,053)
Losses (gains) due to amortization:
Net actuarial loss (gain)	(1,446)	(770)
Prior service cost	1,396	1,280
Curtailment and settlement	4,860	5,820
Foreign currency translation adjustments	0	0
Total changes in Accumulated OCI	51,836	(19,513)
Foreign offices and subsidiaries | Pension benefits
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain) arising during the year	59,505	(40,559)
Prior service cost arising during the year	(597)	402
Losses (gains) due to amortization:
Net actuarial loss (gain)	(7,534)	(16,573)
Prior service cost	3,124	2,802
Curtailment and settlement	(84,345)	(44)
Foreign currency translation adjustments	6,096	6,683
Total changes in Accumulated OCI	(23,751)	(47,289)
One-time write off	84,345
Foreign offices and subsidiaries | Other benefits
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain) arising during the year	4,129	(4,471)
Prior service cost arising during the year	0	55
Losses (gains) due to amortization:
Net actuarial loss (gain)	(155)	64
Prior service cost	432	385
Curtailment and settlement	0	0
Foreign currency translation adjustments	(332)	(139)
Total changes in Accumulated OCI	¥ 4,074	¥ (4,106)

Severance Indemnities and Pe_12

Severance Indemnities and Pension Plans (Weighted-average Target Asset Allocation of Plan Assets for Pension Benefits and Other Benefits) (Detail)	Mar. 31, 2023
Domestic, Japan | Pension benefits and SIPs
Defined Benefit Plan Disclosure [Line Items]
Target allocation of plan assets	100%
Domestic, Japan | Pension benefits and SIPs | Japanese equity securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation of plan assets	34.20%
Domestic, Japan | Pension benefits and SIPs | Japanese debt securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation of plan assets	27.60%
Domestic, Japan | Pension benefits and SIPs | Non-Japanese equity securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation of plan assets	13.80%
Domestic, Japan | Pension benefits and SIPs | Non-Japanese debt securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation of plan assets	18.10%
Domestic, Japan | Pension benefits and SIPs | Real estate
Defined Benefit Plan Disclosure [Line Items]
Target allocation of plan assets	1.30%
Domestic, Japan | Pension benefits and SIPs | Short-term assets and other
Defined Benefit Plan Disclosure [Line Items]
Target allocation of plan assets	5%
Foreign offices and subsidiaries | Pension benefits
Defined Benefit Plan Disclosure [Line Items]
Target allocation of plan assets	100%
Foreign offices and subsidiaries | Pension benefits | Japanese equity securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation of plan assets	0%
Foreign offices and subsidiaries | Pension benefits | Japanese debt securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation of plan assets	0%
Foreign offices and subsidiaries | Pension benefits | Non-Japanese equity securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation of plan assets	16.30%
Foreign offices and subsidiaries | Pension benefits | Non-Japanese debt securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation of plan assets	64.80%
Foreign offices and subsidiaries | Pension benefits | Real estate
Defined Benefit Plan Disclosure [Line Items]
Target allocation of plan assets	3.60%
Foreign offices and subsidiaries | Pension benefits | Short-term assets and other
Defined Benefit Plan Disclosure [Line Items]
Target allocation of plan assets	15.30%
Foreign offices and subsidiaries | Other benefits
Defined Benefit Plan Disclosure [Line Items]
Target allocation of plan assets	100%
Foreign offices and subsidiaries | Other benefits | Japanese equity securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation of plan assets	0%
Foreign offices and subsidiaries | Other benefits | Japanese debt securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation of plan assets	0%
Foreign offices and subsidiaries | Other benefits | Non-Japanese equity securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation of plan assets	30%
Foreign offices and subsidiaries | Other benefits | Non-Japanese debt securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation of plan assets	64%
Foreign offices and subsidiaries | Other benefits | Real estate
Defined Benefit Plan Disclosure [Line Items]
Target allocation of plan assets	6%
Foreign offices and subsidiaries | Other benefits | Short-term assets and other
Defined Benefit Plan Disclosure [Line Items]
Target allocation of plan assets	0%

Severance Indemnities and Pe_13

Severance Indemnities and Pension Plans (Estimated Future Benefit Payments) (Detail) ¥ in Millions	Mar. 31, 2023 JPY (¥)
Domestic, Japan | Pension benefits and SIPs
Defined Benefit Plan Disclosure [Line Items]
2024	¥ 80,489
2025	79,347
2026	78,884
2027	77,514
2028	77,892
Thereafter (2029-2033)	372,835
Foreign offices and subsidiaries | Pension benefits
Defined Benefit Plan Disclosure [Line Items]
2024	14,370
2025	10,311
2026	11,562
2027	13,474
2028	14,440
Thereafter (2029-2033)	97,390
Foreign offices and subsidiaries | Other benefits
Defined Benefit Plan Disclosure [Line Items]
2024	2,364
2025	2,252
2026	2,138
2027	2,014
2028	1,874
Thereafter (2029-2033)	¥ 7,868

Severance Indemnities and Pe_14

Severance Indemnities and Pension Plans (Fair Value of Each Major Category of Plan Assets for Pension Benefits and SIP Investments: Domestic Subsidiaries) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2020
Domestic, Japan | Pension benefits and SIPs
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	¥ 1,260,562	¥ 1,340,873
Approximate guaranteed rate of return of "Japanese general accounts of life insurance companies"	1.25%	1.25%
Domestic, Japan | Pension benefits and SIPs | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	¥ 1,044,312	¥ 1,098,772
Domestic, Japan | Pension benefits and SIPs | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	216,210	241,869
Domestic, Japan | Pension benefits and SIPs | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	40	232
Domestic, Japan | Pension benefits and SIPs | Japanese government bonds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	133,664	140,538
Domestic, Japan | Pension benefits and SIPs | Japanese government bonds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	133,664	140,538
Domestic, Japan | Pension benefits and SIPs | Japanese government bonds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Domestic, Japan | Pension benefits and SIPs | Japanese government bonds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Domestic, Japan | Pension benefits and SIPs | Non-Japanese government bonds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Domestic, Japan | Pension benefits and SIPs | Non-Japanese government bonds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Domestic, Japan | Pension benefits and SIPs | Non-Japanese government bonds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Domestic, Japan | Pension benefits and SIPs | Non-Japanese government bonds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Domestic, Japan | Pension benefits and SIPs | Other debt securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	9,084	24,830
Domestic, Japan | Pension benefits and SIPs | Other debt securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	2,793	9,950
Domestic, Japan | Pension benefits and SIPs | Other debt securities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	6,251	14,648
Domestic, Japan | Pension benefits and SIPs | Other debt securities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	40	232
Domestic, Japan | Pension benefits and SIPs | Japanese marketable equity securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	809,371	848,482
Domestic, Japan | Pension benefits and SIPs | Japanese marketable equity securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	809,371	848,482
Domestic, Japan | Pension benefits and SIPs | Japanese marketable equity securities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Domestic, Japan | Pension benefits and SIPs | Japanese marketable equity securities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Domestic, Japan | Pension benefits and SIPs | Non-Japanese marketable equity securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	79,005	88,159
Domestic, Japan | Pension benefits and SIPs | Non-Japanese marketable equity securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	78,840	87,983
Domestic, Japan | Pension benefits and SIPs | Non-Japanese marketable equity securities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	165	176
Domestic, Japan | Pension benefits and SIPs | Non-Japanese marketable equity securities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Domestic, Japan | Pension benefits and SIPs | Other investment funds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Domestic, Japan | Pension benefits and SIPs | Other investment funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Domestic, Japan | Pension benefits and SIPs | Other investment funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Domestic, Japan | Pension benefits and SIPs | Other investment funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Domestic, Japan | Pension benefits and SIPs | Japanese general account of life insurance companies
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	205,117	209,482
Domestic, Japan | Pension benefits and SIPs | Japanese general account of life insurance companies | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Domestic, Japan | Pension benefits and SIPs | Japanese general account of life insurance companies | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	205,117	209,482
Domestic, Japan | Pension benefits and SIPs | Japanese general account of life insurance companies | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Domestic, Japan | Pension benefits and SIPs | Other investments
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	24,321	29,382
Domestic, Japan | Pension benefits and SIPs | Other investments | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	19,644	11,819
Domestic, Japan | Pension benefits and SIPs | Other investments | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	4,677	17,563
Domestic, Japan | Pension benefits and SIPs | Other investments | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Foreign offices and subsidiaries | Pension benefits and SIPs
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	109,952	564,941
Foreign offices and subsidiaries | Pension benefits and SIPs | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	5,610	187,989
Foreign offices and subsidiaries | Pension benefits and SIPs | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	78,980	337,223
Foreign offices and subsidiaries | Pension benefits and SIPs | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	25,362	39,729
Foreign offices and subsidiaries | Pension benefits and SIPs | Japanese government bonds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Foreign offices and subsidiaries | Pension benefits and SIPs | Japanese government bonds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Foreign offices and subsidiaries | Pension benefits and SIPs | Japanese government bonds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Foreign offices and subsidiaries | Pension benefits and SIPs | Japanese government bonds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Foreign offices and subsidiaries | Pension benefits and SIPs | Non-Japanese government bonds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	4,971	74,272
Foreign offices and subsidiaries | Pension benefits and SIPs | Non-Japanese government bonds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	2,632	68,887
Foreign offices and subsidiaries | Pension benefits and SIPs | Non-Japanese government bonds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	2,339	5,385
Foreign offices and subsidiaries | Pension benefits and SIPs | Non-Japanese government bonds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Foreign offices and subsidiaries | Pension benefits and SIPs | Other debt securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	15,749	133,815
Foreign offices and subsidiaries | Pension benefits and SIPs | Other debt securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Foreign offices and subsidiaries | Pension benefits and SIPs | Other debt securities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	15,749	133,815
Foreign offices and subsidiaries | Pension benefits and SIPs | Other debt securities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Foreign offices and subsidiaries | Pension benefits and SIPs | Japanese marketable equity securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Foreign offices and subsidiaries | Pension benefits and SIPs | Japanese marketable equity securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Foreign offices and subsidiaries | Pension benefits and SIPs | Japanese marketable equity securities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Foreign offices and subsidiaries | Pension benefits and SIPs | Japanese marketable equity securities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Foreign offices and subsidiaries | Pension benefits and SIPs | Non-Japanese marketable equity securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	3	35,215
Foreign offices and subsidiaries | Pension benefits and SIPs | Non-Japanese marketable equity securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	3	34,659
Foreign offices and subsidiaries | Pension benefits and SIPs | Non-Japanese marketable equity securities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	556
Foreign offices and subsidiaries | Pension benefits and SIPs | Non-Japanese marketable equity securities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Foreign offices and subsidiaries | Pension benefits and SIPs | Other investment funds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	59,061	269,814
Foreign offices and subsidiaries | Pension benefits and SIPs | Other investment funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	38	83,442
Foreign offices and subsidiaries | Pension benefits and SIPs | Other investment funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	59,023	186,372
Foreign offices and subsidiaries | Pension benefits and SIPs | Other investment funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Foreign offices and subsidiaries | Pension benefits and SIPs | Japanese general account of life insurance companies
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Foreign offices and subsidiaries | Pension benefits and SIPs | Japanese general account of life insurance companies | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Foreign offices and subsidiaries | Pension benefits and SIPs | Japanese general account of life insurance companies | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Foreign offices and subsidiaries | Pension benefits and SIPs | Japanese general account of life insurance companies | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Foreign offices and subsidiaries | Pension benefits and SIPs | Other investments
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	30,168	51,825
Foreign offices and subsidiaries | Pension benefits and SIPs | Other investments | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	2,937	1,001
Foreign offices and subsidiaries | Pension benefits and SIPs | Other investments | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	1,869	11,095
Foreign offices and subsidiaries | Pension benefits and SIPs | Other investments | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	¥ 25,362	¥ 39,729
Foreign offices and subsidiaries | Pension benefits | Other investment funds | Mutual funds | MUAH
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets			¥ 86,724
Foreign offices and subsidiaries | Pension benefits | Other investment funds | Common collective funds | MUAH
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets			¥ 146,169

Severance Indemnities and Pe_15

Severance Indemnities and Pension Plans (Fair Values of Investments Valued at Net Asset per Share (or Its Equivalent) for Pension Benefits and SIP Investments) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
Domestic, Japan | Pension benefits and SIPs
Defined Benefit Plan Disclosure [Line Items]
Investments valued at net asset per share (or its equivalent)	¥ 1,514,010	¥ 1,549,630
Domestic, Japan | Pension benefits and SIPs | Mutual funds
Defined Benefit Plan Disclosure [Line Items]
Investments valued at net asset per share (or its equivalent)	690,781	625,237
Domestic, Japan | Pension benefits and SIPs | Real estate funds
Defined Benefit Plan Disclosure [Line Items]
Investments valued at net asset per share (or its equivalent)	12,351	15,417
Domestic, Japan | Pension benefits and SIPs | Total pooled funds
Defined Benefit Plan Disclosure [Line Items]
Investments valued at net asset per share (or its equivalent)	787,999	886,893
Domestic, Japan | Pension benefits and SIPs | Total pooled funds | Japanese marketable equity securities
Defined Benefit Plan Disclosure [Line Items]
Investments valued at net asset per share (or its equivalent)	71,753	104,793
Domestic, Japan | Pension benefits and SIPs | Total pooled funds | Japanese debt securities
Defined Benefit Plan Disclosure [Line Items]
Investments valued at net asset per share (or its equivalent)	120,108	221,250
Domestic, Japan | Pension benefits and SIPs | Total pooled funds | Non-Japanese marketable equity securities
Defined Benefit Plan Disclosure [Line Items]
Investments valued at net asset per share (or its equivalent)	186,555	219,018
Domestic, Japan | Pension benefits and SIPs | Total pooled funds | Non-Japanese debt securities
Defined Benefit Plan Disclosure [Line Items]
Investments valued at net asset per share (or its equivalent)	332,691	249,274
Domestic, Japan | Pension benefits and SIPs | Total pooled funds | Other
Defined Benefit Plan Disclosure [Line Items]
Investments valued at net asset per share (or its equivalent)	76,892	92,558
Domestic, Japan | Pension benefits and SIPs | Other investment funds
Defined Benefit Plan Disclosure [Line Items]
Investments valued at net asset per share (or its equivalent)	726,011	662,737
Foreign offices and subsidiaries | Pension benefits
Defined Benefit Plan Disclosure [Line Items]
Investments valued at net asset per share (or its equivalent)	105,867	140,923
Foreign offices and subsidiaries | Pension benefits | Total pooled funds
Defined Benefit Plan Disclosure [Line Items]
Investments valued at net asset per share (or its equivalent)	0	0
Foreign offices and subsidiaries | Pension benefits | Total pooled funds | Japanese marketable equity securities
Defined Benefit Plan Disclosure [Line Items]
Investments valued at net asset per share (or its equivalent)	0	0
Foreign offices and subsidiaries | Pension benefits | Total pooled funds | Japanese debt securities
Defined Benefit Plan Disclosure [Line Items]
Investments valued at net asset per share (or its equivalent)	0	0
Foreign offices and subsidiaries | Pension benefits | Total pooled funds | Non-Japanese marketable equity securities
Defined Benefit Plan Disclosure [Line Items]
Investments valued at net asset per share (or its equivalent)	0	0
Foreign offices and subsidiaries | Pension benefits | Total pooled funds | Non-Japanese debt securities
Defined Benefit Plan Disclosure [Line Items]
Investments valued at net asset per share (or its equivalent)	0	0
Foreign offices and subsidiaries | Pension benefits | Total pooled funds | Other
Defined Benefit Plan Disclosure [Line Items]
Investments valued at net asset per share (or its equivalent)	0	0
Foreign offices and subsidiaries | Pension benefits | Other investment funds
Defined Benefit Plan Disclosure [Line Items]
Investments valued at net asset per share (or its equivalent)	105,867	140,923
Foreign offices and subsidiaries | Pension benefits | Other investment funds | Mutual funds
Defined Benefit Plan Disclosure [Line Items]
Investments valued at net asset per share (or its equivalent)	12,136	25,356
Foreign offices and subsidiaries | Pension benefits | Other investment funds | Real estate funds
Defined Benefit Plan Disclosure [Line Items]
Investments valued at net asset per share (or its equivalent)	63,759	80,349
Foreign offices and subsidiaries | Pension benefits | Other investment funds | Common collective funds
Defined Benefit Plan Disclosure [Line Items]
Investments valued at net asset per share (or its equivalent)	¥ 29,756	¥ 34,971

Other Assets and Liabilities (M

Other Assets and Liabilities (Major Components of Other Assets and Liabilities) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
Other assets:
Receivables from brokers, dealers and customers for securities transactions	¥ 754,483	¥ 644,443
Accounts receivable: Other	1,794,983	1,187,311
Investments in equity method investees	3,482,292	3,066,738
Prepaid benefit cost (Note 13)	1,335,369	1,356,603
Cash collateral pledged for derivative transactions (Note 9)	2,585,837	2,893,178
Cash collateral for the use of Bank of Japan’s settlement infrastructure	933,000	933,000
Accrued interest	500,506	246,271
Deferred tax assets (Note 8)	182,388	79,191
Right-of-use assets of operating leases (Note 7)	227,112	261,803
Other	5,659,034	4,421,979
Total	17,455,004	26,712,084
Other liabilities:
Payables to brokers, dealers and customers for securities transactions	2,062,782	1,970,158
Other	1,920,945	1,311,035
Obligations to return securities received as collateral (Notes 15, 16 and 31)	6,891,545	6,826,215
Accrued interest	385,921	98,183
Deferred tax liabilities (Note 8)	208,610	530,267
Allowance for off-balance sheet credit instruments	143,770	126,055
Accrued benefit cost (Note 13)	89,092	89,062
Guarantees and indemnifications	54,359	45,358
Cash collateral received for derivative transactions (Note 9)	1,318,338	1,017,580
Obligations under operating leases (Note 7)	337,391	384,183
Accrued and other liabilities	3,934,453	3,106,706
Total	17,347,206	26,662,462
Disposal group, disposed of by sale, not discontinued operations
Other assets:
Assets held for sale relating to transferred business of MUFG Union Bank (Note 2)	0	11,621,567
Other liabilities:
Liabilities held for sale relating to transferred business of MUFG Union Bank (Note 2)	0	11,157,660
Card | Total Past Due
Other assets:
Accounts receivable: Other	6,849	5,483
Card | 1-3 months
Other assets:
Accounts receivable: Other	3,173	2,581
Card | Greater Than 3 months
Other assets:
Accounts receivable: Other	¥ 3,676	¥ 2,902

Other Assets and Liabilities (N

Other Assets and Liabilities (Narrative) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Schedule of Equity Method Investments [Line Items]
Investments in equity method investees	¥ 3,482,292	¥ 3,066,738
Marketable equity securities included in investment in equity method investees, aggregated market values	5,099,671	4,714,562
Investment in equity method investees, recognized impairment losses of other-than-temporary declines in the value of investments in certain affiliated companies	¥ 58,061	6,949	¥ 53,758
Morgan Stanley
Schedule of Equity Method Investments [Line Items]
Equity method investment, Ownership percentage, approximately	22.58%
Marketable equity securities
Schedule of Equity Method Investments [Line Items]
Investments in equity method investees	¥ 2,918,480	2,481,644
Marketable equity securities | Morgan Stanley
Schedule of Equity Method Investments [Line Items]
Investments in equity method investees	2,443,602	2,058,638
Marketable equity securities | Morgan Stanley MUFG Securities, Co., Ltd.
Schedule of Equity Method Investments [Line Items]
Investments in equity method investees	¥ 194,225	¥ 183,932

Other Assets and Liabilities (S

Other Assets and Liabilities (Summarized Financial Information of Morgan Stanley) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Schedule of Equity Method Investments [Line Items]
Total assets	¥ 381,735,733	¥ 367,650,018	¥ 353,824,625
Total liabilities	365,269,566	351,353,496
Noncontrolling interests	702,821	691,454
Equity Method Investment, Summarized Financial Information, Income and Loss
Net income applicable to Morgan Stanley	630,321	(44,216)	1,163,394
Morgan Stanley
Schedule of Equity Method Investments [Line Items]
Trading assets	42,770,000	36,335,000
Securities purchased under agreements to resell	16,275,000	15,637,000
Securities borrowed	19,524,000	18,480,000
Total assets	160,223,000	149,589,000
Deposits	46,405,000	44,163,000
Customer and other payables	29,470,000	29,815,000
Borrowings	33,407,000	28,127,000
Total liabilities	146,609,000	136,851,000
Noncontrolling interests	151,000	144,000
Equity Method Investment, Summarized Financial Information, Income and Loss
Net revenues	7,235,000	6,655,000	5,841,000
Total non-interest expenses	5,376,000	4,498,000	3,932,000
Income from continuing operations before income taxes	1,797,000	2,139,000	1,881,000
Net income applicable to Morgan Stanley	¥ 1,402,000	¥ 1,650,000	¥ 1,433,000

Other Assets and Liabilities _2

Other Assets and Liabilities (Summarized Financial Information of Equity Method Investees, Other than Morgan Stanley) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Schedule of Equity Method Investments [Line Items]
Total assets	¥ 381,735,733	¥ 367,650,018	¥ 353,824,625
Total liabilities	365,269,566	351,353,496
Noncontrolling interests	702,821	691,454
Equity Method Investment, Summarized Financial Information, Income and Loss
Net income applicable to Morgan Stanley	630,321	(44,216)	1,163,394
Equity Method Investees Other than Morgan Stanley
Schedule of Equity Method Investments [Line Items]
Net loans	18,114,000	17,107,000
Total assets	35,208,000	32,992,000
Deposits	11,963,000	11,291,000
Total liabilities	29,123,000	27,255,000
Noncontrolling interests	77,000	93,000
Equity Method Investment, Summarized Financial Information, Income and Loss
Total interest income	1,430,000	1,119,000	1,058,000
Total interest expense	519,000	335,000	375,000
Net interest income	911,000	784,000	683,000
Provision for credit losses	245,000	207,000	215,000
Income before income tax expense	616,000	582,000	476,000
Net income applicable to Morgan Stanley	¥ 498,000	¥ 488,000	¥ 400,000

Offsetting of Derivatives, Re_3

Offsetting of Derivatives, Repurchase Agreements, and Securities Lending Transactions (Summary of Offsetting of Derivatives, Repurchase Agreements, and Securities Lending Transactions) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
Offsetting Derivative Assets [Abstract]
Derivative assets, Net amounts presented in the condensed consolidated balance sheet	¥ 12,911,000	¥ 10,534,000
Offsetting Securities Purchased under Agreements to Resell [Abstract]
Receivables under resale agreements, Net amounts presented in the consolidated balance sheet	14,058,963	12,503,396
Offsetting Securities Borrowed [Abstract]
Receivables under securities borrowing transactions, Net amounts presented in the consolidated balance sheet	4,555,748	4,496,376
Offsetting Derivative Liabilities [Abstract]
Derivative liabilities, Net amounts presented in the consolidated balance sheet	13,833,000	10,895,000
Offsetting Securities Sold under Agreements to Repurchase [Abstract]
Payables under repurchase agreements, Gross amounts of recognized assets/liabilities	42,172,000	29,717,000
Offsetting Securities Loaned [Abstract]
Payables under securities lending transactions, Gross amounts of recognized assets/liabilities	1,212,000	1,097,000
Payables under securities lending transactions, Net amounts presented in the consolidated balance sheet	1,137,693	1,021,887
Offsetting Obligations To Return Securities Received As Collateral [Abstract]
Obligations to return securities received as collateral, Gross amounts of recognized assets/liabilities	6,892,000	6,826,000
Obligations to return securities received as collateral, Net amounts presented in the consolidated balance sheet	6,891,545	6,826,215
Financial Instruments including those of transferred business of MUFG Union Bank
Offsetting Derivative Assets [Abstract]
Derivative assets, Gross amounts of recognized assets/liabilities	12,911,000	10,611,000
Derivative assets, Gross amounts offset in the condensed consolidated balance sheet	0	0
Derivative assets, Net amounts presented in the condensed consolidated balance sheet	12,911,000	10,611,000
Derivative assets, Gross amounts not offset in the condensed consolidated balance sheet, Financial instruments	(9,902,000)	(7,032,000)
Derivative assets, Gross amounts not offset in the condensed consolidated balance sheet, Cash collateral received/pledged	(690,000)	(620,000)
Derivative assets, Net amounts	2,319,000	2,959,000
Offsetting Securities Purchased under Agreements to Resell [Abstract]
Receivables under resale agreements, Gross amounts of recognized assets/liabilities	16,152,000	14,527,000
Receivables under resale agreements, Gross amounts offset in the consolidated balance sheet	(2,093,000)	(2,024,000)
Receivables under resale agreements, Net amounts presented in the consolidated balance sheet	14,059,000	12,503,000
Receivables under resale agreements, Gross amounts not offset in the consolidated balance sheet, Financial instruments	(13,391,000)	(11,614,000)
Receivables under resale agreements, Gross amounts not offset in the consolidated balance sheet, Cash collateral received/pledged	(32,000)	(29,000)
Receivables under resale agreements, Net amounts	636,000	860,000
Offsetting Securities Borrowed [Abstract]
Receivables under securities borrowing transactions, Gross amounts of recognized assets/liabilities	4,630,000	4,571,000
Receivables under securities borrowing transactions, Gross amounts offset in the consolidated balance sheet	(74,000)	(75,000)
Receivables under securities borrowing transactions, Net amounts presented in the consolidated balance sheet	4,556,000	4,496,000
Receivables under securities borrowing transactions, Gross amounts not offset in the consolidated balance sheet, Financial instruments	(4,478,000)	(4,367,000)
Receivables under securities borrowing transactions, Gross amounts not offset in the consolidated balance sheet, Cash collateral received/pledged	0	0
Receivables under securities borrowing transactions, Net amounts	78,000	129,000
Offsetting Derivative Asset, Securities Purchased under Agreements to Resell, Securities Borrowed [Abstract]
Financial assets, Gross amounts of recognized assets/liabilities, Total	33,693,000	29,709,000
Financial assets, Gross amounts offset in the consolidated balance sheet, Total	(2,167,000)	(2,099,000)
Financial assets, Net amounts presented in the consolidated balance sheet, Total	31,526,000	27,610,000
Financial assets, Gross amounts not offset in the consolidated balance sheet, Financial instruments, Total	(27,771,000)	(23,013,000)
Financial assets, Gross amounts not offset in the consolidated balance sheet, Cash collateral received/pledged, Total	(722,000)	(649,000)
Financial assets, Net amounts, Total	3,033,000	3,948,000
Offsetting Derivative Liabilities [Abstract]
Derivative liabilities, Gross amounts of recognized assets/liabilities	13,833,000	10,948,000
Derivative liabilities, Gross amounts offset in the consolidated balance sheet	0	0
Derivative liabilities, Net amounts presented in the consolidated balance sheet	13,833,000	10,948,000
Derivative liabilities, Gross amounts not offset in the consolidated balance sheet, Financial instruments	(9,668,000)	(6,749,000)
Derivative liabilities, Gross amounts not offset in the consolidated balance sheet, Cash collateral received/pledged	(1,489,000)	(2,225,000)
Derivative liabilities, Net amounts	2,676,000	1,974,000
Offsetting Securities Sold under Agreements to Repurchase [Abstract]
Payables under repurchase agreements, Gross amounts of recognized assets/liabilities	42,172,000	29,717,000
Payables under repurchase agreements, Gross amounts offset in the consolidated balance sheet	(2,040,000)	(1,991,000)
Payables under repurchase agreements, Net amounts presented in the consolidated balance sheet	40,132,000	27,726,000
Payables under repurchase agreements, Gross amounts not offset in the consolidated balance sheet, Financial instruments	(39,232,000)	(26,115,000)
Payables under repurchase agreements, Gross amounts not offset in the consolidated balance sheet, Cash collateral received/pledged	(76,000)	(85,000)
Payables under repurchase agreements, Net amounts	824,000	1,526,000
Offsetting Securities Loaned [Abstract]
Payables under securities lending transactions, Gross amounts of recognized assets/liabilities	1,212,000	1,097,000
Payables under securities lending transactions, Gross amounts offset in the consolidated balance sheet	(74,000)	(75,000)
Payables under securities lending transactions, Net amounts presented in the consolidated balance sheet	1,138,000	1,022,000
Payables under securities lending transactions, Gross amounts not offset in the consolidated balance sheet, Financial instruments	(1,108,000)	(990,000)
Payables under securities lending transactions, Gross amounts not offset in the consolidated balance sheet, Cash collateral received/pledged	(18,000)	(5,000)
Payables under securities lending transactions, Net amounts	12,000	27,000
Offsetting Obligations To Return Securities Received As Collateral [Abstract]
Obligations to return securities received as collateral, Gross amounts of recognized assets/liabilities	6,892,000	6,826,000
Obligations to return securities received as collateral, Gross amounts offset in the consolidated balance sheet	0	0
Obligations to return securities received as collateral, Net amounts presented in the consolidated balance sheet	6,892,000	6,826,000
Obligations to return securities received as collateral, Gross amounts not offset in the consolidated balance sheet, Financial instruments	(1,975,000)	(1,864,000)
Obligations to return securities received as collateral, Gross amounts not offset in the consolidated balance sheet, Cash collateral received/pledged	0	0
Obligations to return securities received as collateral, Net amounts	4,917,000	4,962,000
Offsetting Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned [Abstract]
Financial liabilities, Gross amounts of recognized assets/liabilities, Total	64,109,000	48,588,000
Financial liabilities, Gross amounts offset in the consolidated balance sheet, Total	(2,114,000)	(2,066,000)
Financial liabilities, Net amounts presented in the consolidated balance sheet, Total	61,995,000	46,522,000
Financial liabilities, Gross amounts not offset in the consolidated balance sheet, Financial instruments, Total	(51,983,000)	(35,718,000)
Financial liabilities, Gross amounts not offset in the consolidated balance sheet, Cash collateral received/pledged, Total	(1,583,000)	(2,315,000)
Financial liabilities, Net amounts, Total	¥ 8,429,000	¥ 8,489,000

Repurchase Agreements, and Se_3

Repurchase Agreements, and Securities Lending Transactions Accounted for as Secured Borrowings (Gross Obligations by Remaining Contractual Maturity and Class of Collateral Pledged) (Detail) - JPY (¥) ¥ in Billions	Mar. 31, 2023	Mar. 31, 2022
Repurchase Agreements, and Securities Lending Transactions Accounted for as Secured Borrowings [Line Items]
Payables under repurchase agreements	¥ 42,172	¥ 29,717
Payables under securities lending transactions	1,212	1,097
Obligations to return securities received as collateral	6,892	6,826
Total	50,276	37,640
Overnight and open
Repurchase Agreements, and Securities Lending Transactions Accounted for as Secured Borrowings [Line Items]
Payables under repurchase agreements	8,593	6,703
Payables under securities lending transactions	947	972
Obligations to return securities received as collateral	5,516	5,782
Total	15,056	13,457
30 days or less
Repurchase Agreements, and Securities Lending Transactions Accounted for as Secured Borrowings [Line Items]
Payables under repurchase agreements	23,546	17,050
Payables under securities lending transactions	191	95
Obligations to return securities received as collateral	642	450
Total	24,379	17,595
31 to 90 days
Repurchase Agreements, and Securities Lending Transactions Accounted for as Secured Borrowings [Line Items]
Payables under repurchase agreements	8,393	3,934
Payables under securities lending transactions	5	29
Obligations to return securities received as collateral	404	437
Total	8,802	4,400
Over 90 days
Repurchase Agreements, and Securities Lending Transactions Accounted for as Secured Borrowings [Line Items]
Payables under repurchase agreements	1,640	2,030
Payables under securities lending transactions	69	1
Obligations to return securities received as collateral	330	157
Total	¥ 2,039	¥ 2,188

Repurchase Agreements, and Se_4

Repurchase Agreements, and Securities Lending Transactions Accounted for as Secured Borrowings (Secured Borrowing by the Class of Collateral Pledged) (Detail) - JPY (¥) ¥ in Billions	Mar. 31, 2023	Mar. 31, 2022
Repurchase Agreements, and Securities Lending Transactions Accounted for as Secured Borrowings [Line Items]
Payables under repurchase agreements	¥ 42,172	¥ 29,717
Payables under securities lending transactions	1,212	1,097
Obligations to return securities received as collateral	6,892	6,826
Total	50,276	37,640
Japanese national government and Japanese government agency bonds
Repurchase Agreements, and Securities Lending Transactions Accounted for as Secured Borrowings [Line Items]
Payables under repurchase agreements	13,280	7,486
Payables under securities lending transactions	577	359
Obligations to return securities received as collateral	3,956	4,199
Total	17,813	12,044
Foreign government and official institution bonds
Repurchase Agreements, and Securities Lending Transactions Accounted for as Secured Borrowings [Line Items]
Payables under repurchase agreements	17,618	14,116
Payables under securities lending transactions	9	11
Obligations to return securities received as collateral	1,122	1,017
Total	18,749	15,144
Corporate bonds
Repurchase Agreements, and Securities Lending Transactions Accounted for as Secured Borrowings [Line Items]
Payables under repurchase agreements	657	745
Payables under securities lending transactions	70	68
Obligations to return securities received as collateral	400	330
Total	1,127	1,143
Residential mortgage-backed securities
Repurchase Agreements, and Securities Lending Transactions Accounted for as Secured Borrowings [Line Items]
Payables under repurchase agreements	9,650	6,720
Payables under securities lending transactions	0	1
Obligations to return securities received as collateral	0	0
Total	9,650	6,721
Other debt securities
Repurchase Agreements, and Securities Lending Transactions Accounted for as Secured Borrowings [Line Items]
Payables under repurchase agreements	552	276
Payables under securities lending transactions	0	0
Obligations to return securities received as collateral	46	2
Total	598	278
Marketable equity securities
Repurchase Agreements, and Securities Lending Transactions Accounted for as Secured Borrowings [Line Items]
Payables under repurchase agreements	367	360
Payables under securities lending transactions	556	641
Obligations to return securities received as collateral	1,368	1,278
Total	2,291	2,279
Other
Repurchase Agreements, and Securities Lending Transactions Accounted for as Secured Borrowings [Line Items]
Payables under repurchase agreements	48	14
Payables under securities lending transactions	0	17
Obligations to return securities received as collateral	0	0
Total	¥ 48	¥ 31

Preferred Stock (Narrative) (De

Preferred Stock (Narrative) (Detail) - ¥ / shares	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Class of Stock [Line Items]
Number of preferred stock outstanding (in shares)	0	0	0
Class 5 preferred stock
Class of Stock [Line Items]
Stock authorized (in shares)	400,000,000
Liquidation distribution per share	¥ 2,500
Class 6 preferred stock
Class of Stock [Line Items]
Stock authorized (in shares)	200,000,000
Liquidation distribution per share	¥ 2,500
Class 7 preferred stock
Class of Stock [Line Items]
Stock authorized (in shares)	200,000,000
Liquidation distribution per share	¥ 2,500

Common Stock and Capital Surp_3

Common Stock and Capital Surplus (Changes in Number of Issued Shares of Common Stock) (Detail) - Common stock - shares	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Common Stock and Capital Surplus Disclosure [Line Items]
Balance at beginning of fiscal year	13,281,995,120	13,581,995,120	13,581,995,120
Retirement of shares of common stock	(594,284,200)	(300,000,000)	0
Balance at end of fiscal year	12,687,710,920	13,281,995,120	13,581,995,120

Common Stock and Capital Surp_4

Common Stock and Capital Surplus (Narrative) (Detail) - JPY (¥)				2 Months Ended	5 Months Ended
	Feb. 28, 2023	Nov. 30, 2022	Nov. 30, 2021	Jan. 31, 2023	Oct. 31, 2022	Mar. 31, 2022	Mar. 31, 2023	Nov. 14, 2022	May 16, 2022	Nov. 15, 2021
Treasury Stock:
Treasury stock %							5%
Minimum
Common Stock and Capital Surplus Disclosure [Line Items]
Percentage of proceeds per issuance of common stock, including conversions of bonds and notes, to be credited to the common stock account							50%
Percentage of outstanding common stock issued as free share distribution prior to April 1, 1991							5%
Maximum
Common Stock and Capital Surplus Disclosure [Line Items]
Percentage of outstanding common stock issued as free share distribution prior to April 1, 1991							10%
Common stock
Treasury Stock:
Number of own shares repurchased (in shares)				175,357,900	418,926,300	225,408,800
Treasury shares value				¥ 149,999,996,001	¥ 299,999,909,768	¥ 149,999,964,962
Treasury shares cancelled (in shares)	175,357,900	418,926,300	300,000,000
Common stock | Maximum
Treasury Stock:
Aggregated number of shares allowed for repurchase (in shares)								300,000,000	600,000,000	300,000,000
Aggregate amount of shares allowed for repurchase								¥ 150,000,000,000	¥ 300,000,000,000	¥ 150,000,000,000
BK and TB | Common stock
Common Stock and Capital Surplus Disclosure [Line Items]
Increase (decrease) by amount equal to the fair value of the shares issued by the application of U.S. accounting practices for issuance of free shares distribution made prior to April 1, 1991							¥ 1,910,106,000,000
BK and TB | Unappropriated retained earnings
Common Stock and Capital Surplus Disclosure [Line Items]
Increase (decrease) by amount equal to the fair value of the shares issued by the application of U.S. accounting practices for issuance of free shares distribution made prior to April 1, 1991							¥ 1,910,106,000,000

Retained Earnings, Legal Rese_2

Retained Earnings, Legal Reserve and Dividends (Narrative) (Detail) - JPY (¥)	Mar. 31, 2023	Mar. 31, 2022	Oct. 01, 2005	Apr. 02, 2001
Retained Earnings Appropriated and Transferred [Line Items]
Legal capital surplus	¥ 4,902,155,000,000	¥ 5,327,772,000,000
Common stock and preferred stock issued, Value	2,090,270,000,000	¥ 2,090,270,000,000
Code and Japanese GAAP
Retained Earnings Appropriated and Transferred [Line Items]
Common stock issued, Value				¥ 924,400,000,000
Preferred stock issued, Value				222,100,000,000
Legal capital surplus			¥ 3,577,570,000,000	2,838,693,000,000
Retained earnings			757,458,000,000	¥ 0
Common stock and preferred stock issued, Value			¥ 1,383,052,000,000
Japanese GAAP
Retained Earnings Appropriated and Transferred [Line Items]
MUFG's amount available for dividends	¥ 4,214,685,000,000
Minimum | Companies Act
Retained Earnings Appropriated and Transferred [Line Items]
Percentage of aggregate amount of cash dividends and certain appropriations of retained earnings associated with cash set aside as legal reserve	10%
Minimum | Banking Law
Retained Earnings Appropriated and Transferred [Line Items]
Percentage of aggregate amount of cash dividends and certain appropriations of retained earnings associated with cash set aside as legal reserve	20%
Maximum | Companies Act
Retained Earnings Appropriated and Transferred [Line Items]
Percentage of aggregate amount of legal reserve set aside as an appropriation of retained earnings and the legal capital surplus over stated capital	25%
Percentage of aggregate amount of legal reserve set aside as an appropriation of retained earnings and the legal capital surplus available for dividends over stated capital	25%
Maximum | Banking Law
Retained Earnings Appropriated and Transferred [Line Items]
Percentage of aggregate amount of legal reserve set aside as an appropriation of retained earnings and the legal capital surplus over stated capital	100%
Percentage of aggregate amount of legal reserve set aside as an appropriation of retained earnings and the legal capital surplus available for dividends over stated capital	100%

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) (Changes in Accumulated OCI, Net of Tax and Net of Noncontrolling Interests) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of fiscal year	¥ 16,296,522	¥ 16,244,554
Net change during the fiscal year	657,399	552,485	¥ 81,840
Balance at end of fiscal year	16,466,167	16,296,522	16,244,554
Accumulated other comprehensive income (loss), net of taxes:
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of fiscal year	227,033	(289,481)	(420,417)
Net change during the fiscal year	637,450	516,514	130,902
Elimination of the difference in reporting periods of the transferred business (Note 2)	(20,291)	0	0
Balance at end of fiscal year	844,192	227,033	(289,481)
Accumulated other comprehensive income (loss), net of taxes: | Revision of Prior Period, Accounting Standards Update, Adjustment | Effect of adopting new guidance on measurement of credit losses on financial instruments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of fiscal year	0	34
Balance at end of fiscal year	0	0	34
Net unrealized losses (gains) on investment securities
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of fiscal year	(674,230)	(383,004)	(344,785)
Net change during the fiscal year	(227,053)	(291,226)	(38,253)
Elimination of the difference in reporting periods of the transferred business (Note 2)	17,817	0	0
Balance at end of fiscal year	(883,466)	(674,230)	(383,004)
Net unrealized losses (gains) on investment securities | Revision of Prior Period, Accounting Standards Update, Adjustment | Effect of adopting new guidance on measurement of credit losses on financial instruments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of fiscal year	0	34
Balance at end of fiscal year	0	0	34
Net debt valuation adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of fiscal year	(14,538)	(37,862)	45,502
Net change during the fiscal year	17,806	23,324	(83,364)
Balance at end of fiscal year	3,268	(14,538)	(37,862)
Net unrealized gains (losses) on derivatives qualifying for cash flow hedges:
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of fiscal year	5,969	19,029	(13,343)
Net change during the fiscal year	5,140	(13,060)	32,372
Elimination of the difference in reporting periods of the transferred business (Note 2)	(10,515)	0	0
Balance at end of fiscal year	594	5,969	19,029
Defined benefit plans
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of fiscal year	29,124	(20,382)	(337,918)
Net change during the fiscal year	6,773	49,506	317,536
Elimination of the difference in reporting periods of the transferred business (Note 2)	(27,593)	0	0
Balance at end of fiscal year	8,304	29,124	(20,382)
Foreign currency translation adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of fiscal year	880,708	132,738	230,127
Net change during the fiscal year	834,784	747,970	(97,389)
Balance at end of fiscal year	¥ 1,715,492	¥ 880,708	¥ 132,738

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income (Loss) (Before Tax and Net of Tax Changes in Each Component of Accumulated OCI) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), Tax (expense) or benefit	¥ 28,950	¥ 33,481	¥ 113,113
Total	657,399	552,485	81,840
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	637,450	516,514	130,902
Net unrealized gains (losses) on investment securities:
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, before Tax	(600,339)	(347,106)	(69,247)
Other Comprehensive Income (Loss) before Reclassifications, Tax (expense) or benefit	(159,480)	(76,360)	599
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(440,859)	(270,746)	(69,846)
Reclassification adjustment, Current Period, before Tax	(337,313)	2,015	383
Reclassification adjustment, Current Period, Tax (expense) or benefit	(99,409)	11,268	(547)
Reclassification adjustment, Current Period, Net of Tax	(237,904)	(9,253)	930
Elimination of difference in reporting periods, Current period, Before tax	24,147	0	0
Elimination of difference in reporting periods, Current period, Tax	6,330	0	0
Elimination of difference in reporting periods, Current period, Net of tax	17,817	0	0
Other Comprehensive Income (Loss), before Tax	(287,173)	(349,121)	(69,630)
Other Comprehensive Income (Loss), Tax (expense) or benefit	(66,401)	(87,628)	1,146
Total	(220,772)	(261,493)	(70,776)
Net unrealized gains (losses) on investment securities attributable to noncontrolling interests
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total	6,281	29,733	(32,523)
Net unrealized losses on investment securities attributable to Mitsubishi UFJ Financial Group
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total	(227,053)	(291,226)	(38,253)
Net debt valuation adjustments:
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, before Tax	25,220	32,735	(126,007)
Other Comprehensive Income (Loss) before Reclassifications, Tax (expense) or benefit	7,722	10,025	(38,584)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	17,498	22,710	(87,423)
Reclassification adjustment, Current Period, before Tax	(444)	(885)	(5,851)
Reclassification adjustment, Current Period, Tax (expense) or benefit	(136)	(271)	(1,792)
Reclassification adjustment, Current Period, Net of Tax	(308)	(614)	(4,059)
Other Comprehensive Income (Loss), before Tax	25,664	33,620	(120,156)
Other Comprehensive Income (Loss), Tax (expense) or benefit	7,858	10,296	(36,792)
Total	17,806	23,324	(83,364)
Net debt valuation adjustments attributable to noncontrolling interests
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total	0	0	0
Net debt valuation adjustments attributable to Mitsubishi UFJ Financial Group
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total	17,806	23,324	(83,364)
Net unrealized gains (losses) on derivatives qualifying for cash flow hedges:
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, before Tax	(38,278)	(5,542)	44,255
Other Comprehensive Income (Loss) before Reclassifications, Tax (expense) or benefit	(10,600)	(1,825)	12,359
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(27,678)	(3,717)	31,896
Reclassification adjustment, Current Period, before Tax	(31,019)	12,200	(164)
Reclassification adjustment, Current Period, Tax (expense) or benefit	(8,458)	3,143	115
Reclassification adjustment, Current Period, Net of Tax	(22,561)	9,057	(279)
Elimination of difference in reporting periods, Current period, Before tax	(14,251)	0	0
Elimination of difference in reporting periods, Current period, Tax	(3,736)	0	0
Elimination of difference in reporting periods, Current period, Net of tax	(10,515)	0	0
Other Comprehensive Income (Loss), before Tax	6,992	(17,742)	44,419
Other Comprehensive Income (Loss), Tax (expense) or benefit	1,594	(4,968)	12,244
Total	5,398	(12,774)	32,175
Net unrealized gains (losses) on derivatives qualifying for cash flow hedges attributable to noncontrolling interests
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total	258	286	(197)
Net unrealized gains (losses) on derivatives qualifying for cash flow hedges attributable to Mitsubishi UFJ Financial Group
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total	5,140	(13,060)	32,372
Defined benefit plans:
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, before Tax	(129,100)	62,946	436,435
Other Comprehensive Income (Loss) before Reclassifications, Tax (expense) or benefit	(37,654)	17,350	133,404
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(91,446)	45,596	303,031
Reclassification adjustment, Current Period, before Tax	(98,428)	(7,042)	(22,504)
Reclassification adjustment, Current Period, Tax (expense) or benefit	(27,313)	(1,689)	(6,479)
Reclassification adjustment, Current Period, Net of Tax	(71,115)	(5,353)	(16,025)
Elimination of difference in reporting periods, Current period, Before tax	(37,257)	0	0
Elimination of difference in reporting periods, Current period, Tax	(9,664)	0	0
Elimination of difference in reporting periods, Current period, Net of tax	(27,593)	0	0
Other Comprehensive Income (Loss), before Tax	6,585	69,988	458,939
Other Comprehensive Income (Loss), Tax (expense) or benefit	(677)	19,039	139,883
Total	7,262	50,949	319,056
Defined benefit plans attributable to noncontrolling interests
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total	489	1,443	1,520
Defined benefit plans attributable to Mitsubishi UFJ Financial Group
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total	6,773	49,506	317,536
Foreign currency translation adjustments:
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, before Tax	958,705	853,517	(61,085)
Other Comprehensive Income (Loss) before Reclassifications, Tax (expense) or benefit	94,056	98,059	14,370
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	864,649	755,458	(75,455)
Reclassification adjustment, Current Period, before Tax	24,424	4,296	57,534
Reclassification adjustment, Current Period, Tax (expense) or benefit	7,480	1,317	17,738
Reclassification adjustment, Current Period, Net of Tax	16,944	2,979	39,796
Other Comprehensive Income (Loss), before Tax	934,281	849,221	(118,619)
Other Comprehensive Income (Loss), Tax (expense) or benefit	86,576	96,742	(3,368)
Total	847,705	752,479	(115,251)
Foreign currency translation adjustments attributable to noncontrolling interests
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total	12,921	4,509	(17,862)
Foreign currency translation adjustments attributable to Mitsubishi UFJ Financial Group
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total	¥ 834,784	¥ 747,970	¥ (97,389)

Accumulated Other Comprehensi_5

Accumulated Other Comprehensive Income (Loss) (Reclassification of Significant Items out of Accumulated OCI) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Investment securities gains (losses)—net	¥ 254,178	¥ 119,026	¥ (1,458,264)
Total before tax	656,734	(58,727)	1,608,342
Income tax expense (benefit)	26,413	(14,511)	444,948
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(630,321)	44,216	(1,163,394)
Equity in earnings of equity method investees—net or Other non-interest income	(398,086)	(436,583)	(355,730)
Interest income on Loans, including fees	(2,973,667)	(1,731,962)	(1,940,754)
Other non-interest expenses	(433,632)	(261,312)	(322,171)
Other non-interest income	(92,828)	(119,321)	(109,615)
Amount reclassified out of Accumulated OCI
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	(442,780)	10,584	29,398
Income tax expense (benefit)	(127,836)	13,768	9,035
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	314,944	3,184	(20,363)
Amount reclassified out of Accumulated OCI | Net losses (gains) on sales and redemptions of Available-for-sale debt securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Investment securities gains (losses)—net	(2,682)	(48,637)	6,410
Amount reclassified out of Accumulated OCI | Impairment losses on investment securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Investment securities gains (losses)—net	359,629	47,069	6
Amount reclassified out of Accumulated OCI | Net unrealized losses (gains) on investment securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Investment securities gains (losses)—net	8,617	(447)	(6,799)
Total before tax	(337,313)	2,015	383
Income tax expense (benefit)	(99,409)	11,268	(547)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	237,904	9,253	(930)
Amount reclassified out of Accumulated OCI | Net debt valuation adjustments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	(444)	(885)	(5,851)
Income tax expense (benefit)	(136)	(271)	(1,792)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	308	614	4,059
Equity in earnings of equity method investees—net or Other non-interest income	444	885	5,851
Amount reclassified out of Accumulated OCI | Net unrealized gains (losses) on derivatives qualifying for cash flow hedges:
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	(31,019)	12,200	(164)
Income tax expense (benefit)	(8,458)	3,143	115
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	22,561	(9,057)	279
Amount reclassified out of Accumulated OCI | Net unrealized gains (losses) on derivatives qualifying for cash flow hedges: | Interest rate contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest income on Loans, including fees	(4,447)	(12,017)	(3,579)
Amount reclassified out of Accumulated OCI | Net unrealized gains (losses) on derivatives qualifying for cash flow hedges: | Foreign exchange contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense on Long-term debt or Foreign exchange gains—net	(1,419)	(183)	3,743
Amount reclassified out of Accumulated OCI | Net actuarial loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other non-interest expenses	9,135	17,279	28,787
Amount reclassified out of Accumulated OCI | Prior service cost
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other non-interest expenses	(4,952)	(4,467)	(4,267)
Amount reclassified out of Accumulated OCI | Gain on settlements and curtailment, and other
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other non-interest expenses	79,850	(5,770)	(2,016)
Amount reclassified out of Accumulated OCI | Defined benefit plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	(98,428)	(7,042)	(22,504)
Income tax expense (benefit)	(27,313)	(1,689)	(6,479)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	71,115	5,353	16,025
Amount reclassified out of Accumulated OCI | Foreign currency translation adjustments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	24,424	4,296	57,534
Income tax expense (benefit)	7,480	1,317	17,738
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(16,944)	(2,979)	(39,796)
Other non-interest expenses	0	7	27
Other non-interest income	(24,424)	(4,303)	(57,561)
Amount reclassified out of Accumulated OCI | Disposal Group Including Discontinued Operation, Gain (Loss) On Disposal
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Investment securities gains (losses)—net	(28,251)	0	0
Other non-interest expenses	14,395	0	0
Amount reclassified out of Accumulated OCI | Disposal Group Including Discontinued Operation, Gain (Loss) On Disposal | Foreign exchange contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense on Long-term debt or Foreign exchange gains—net	¥ 36,885	¥ 0	¥ 0

Regulatory Capital Requiremen_3

Regulatory Capital Requirements (Narrative) (Detail) ¥ in Millions	12 Months Ended
	Mar. 31, 2023 JPY (¥) capitalRatio guideline Approach	Mar. 31, 2022 JPY (¥)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Number of methodologies/guidelines | guideline	2
Number of regulatory capital ratios | capitalRatio	3
Percentage of G-SIB leverage ratio buffer to G-SIB capital surcharge, effective on January 1, 2022	0.75%
Basel III
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Number of approaches | Approach	3
Risk weighted threshold of items not deducted from Common Equity Tier 1 capital	250%
FSA's requirements applicable to Japanese banking institutions
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Minimum Common Equity Tier 1 capital ratio	0.0450	0.0450
Capital conservation buffer	2.50%	2.50%
G-SIB surcharge	1.50%	1.50%
Countercyclical buffer	0.04%	0.01%
Tier 1 leverage ratio	0.030
Percentage of G-SIB leverage ratio buffer to G-SIB capital surcharge, effective on January 1, 2022	50%
Basel III for Security Companies in Japan
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Minimum capital ratio required for financial Instruments firms to maintain by Financial Instruments and Exchange Act and related ordinance	120%
Minimum capital ratio requirement for financial instruments firms which will call for regulatory reporting	140%
Minimum capital ratio requirement for financial instrument firms which may lead to a suspension of all or part of the business for a period of time and cancellation of a registration	100%
Basel III for Security Companies in Japan | Stand-alone, Mitsubishi UFJ Morgan Stanley Securities
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Amount of capital accounts less certain fixed assets | ¥	¥ 550,276	¥ 486,756
Percentage of capital accounts to the total amounts equivalent to market, counterparty credit and operational risks	310.90%	317.10%
U.S. Basel III
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Minimum Common Equity Tier 1 capital ratio	0.045
Capital conservation buffer	2.50%
Countercyclical buffer	2.50%
Tier 1 leverage ratio	0.04
Total minimum Common Equity Tier 1 capital ratio	7%
Tier 1 supplementary leverage ratio	0.03
Phase-in period to eliminate the accumulated OCI or loss exclusion applied under Basel I and Basel II rules	4 years
Capital conservation buffer phase-in arrangements	0.625%
Phase-in period for full implementation of capital conservation buffer	4 years

Regulatory Capital Requiremen_4

Regulatory Capital Requirements (Risk-adjusted Capital Amounts and Ratios, Japan) (Detail) ¥ in Millions	Mar. 31, 2023 JPY (¥)	Mar. 31, 2022 JPY (¥)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Percentage of G-SIB leverage ratio buffer to G-SIB capital surcharge, effective on January 1, 2022	0.75%
FSA's requirements applicable to Japanese banking institutions
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier 1 capital (to risk-weighted assets): Ratio for minimum capital ratios required	0.0450	0.0450
Tier 1 capital (to quarterly average assets): Ratio for minimum capital ratios required	0.030
Capital conservation buffer	2.50%	2.50%
G-SIB surcharge	1.50%	1.50%
Countercyclical buffer	0.04%	0.01%
Percentage of G-SIB leverage ratio buffer to G-SIB capital surcharge, effective on January 1, 2022	50%
Consolidated, MUFG
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total capital (to risk-weighted assets): Actual amount	¥ 17,166,109	¥ 17,858,656
Total capital (to risk-weighted assets): Actual ratio	0.1391	0.1429
Tier 1 capital (to risk-weighted assets): Actual amount	¥ 14,863,717	¥ 15,476,287
Tier 1 capital (to risk-weighted assets): Actual ratio	0.1204	0.1238
Common Equity Tier 1 capital (to risk-weighted assets): Actual amount	¥ 13,280,842	¥ 13,823,912
Common Equity Tier 1 capital (to risk-weighted assets): Actual ratio	0.1076	0.1106
Leverage Ratio: Actual amount	¥ 14,863,717	¥ 15,476,287
Leverage Ratio: Actual ratio	0.0470	0.0514
Total capital (to risk-weighted assets): Amount for capital adequacy purposes	¥ 14,852,953	¥ 15,002,201
Total capital (to risk-weighted assets): Ratio for capital adequacy purposes	0.1204	0.1201
Tier 1 capital (to risk-weighted assets): Amount for capital adequacy purposes	¥ 12,385,685	¥ 12,503,916
Tier 1 capital (to risk-weighted assets): Ratio for capital adequacy purposes	0.1004	0.1001
Common Equity Tier 1 capital (to risk-weighted assets): Amount for capital adequacy purposes	¥ 10,535,234	¥ 10,630,203
Common Equity Tier 1 capital (to risk-weighted assets): Ratio for minimum capital ratios required	0.0854	0.0851
Leverage Ratio: Amount for capital adequacy purposes	¥ 11,851,297	¥ 9,023,770
Tier 1 capital (to quarterly average assets): Ratio for minimum capital ratios required	0.0375	0.0300
Consolidated, MUFG | FSA's requirements applicable to Japanese banking institutions
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier 1 capital (to risk-weighted assets): Ratio for minimum capital ratios required	0.0450	0.0450
Capital conservation buffer	2.50%	2.50%
G-SIB surcharge	1.50%	1.50%
Consolidated, BK
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total capital (to risk-weighted assets): Actual amount	¥ 14,207,818	¥ 14,076,877
Total capital (to risk-weighted assets): Actual ratio	0.1258	0.1294
Tier 1 capital (to risk-weighted assets): Actual amount	¥ 12,469,254	¥ 12,092,189
Tier 1 capital (to risk-weighted assets): Actual ratio	0.1104	0.1111
Common Equity Tier 1 capital (to risk-weighted assets): Actual amount	¥ 11,172,146	¥ 10,728,587
Common Equity Tier 1 capital (to risk-weighted assets): Actual ratio	0.0989	0.0986
Leverage Ratio: Actual amount	¥ 12,469,254	¥ 12,092,189
Leverage Ratio: Actual ratio	0.0475	0.0496
Total capital (to risk-weighted assets): Amount for capital adequacy purposes	¥ 9,029,639	¥ 8,700,226
Total capital (to risk-weighted assets): Ratio for capital adequacy purposes	0.0800	0.0800
Tier 1 capital (to risk-weighted assets): Amount for capital adequacy purposes	¥ 6,772,229	¥ 6,525,170
Tier 1 capital (to risk-weighted assets): Ratio for capital adequacy purposes	0.0600	0.0600
Common Equity Tier 1 capital (to risk-weighted assets): Amount for capital adequacy purposes	¥ 5,079,172	¥ 4,893,877
Common Equity Tier 1 capital (to risk-weighted assets): Ratio for minimum capital ratios required	0.0450	0.0450
Leverage Ratio: Amount for capital adequacy purposes	¥ 7,867,085	¥ 7,312,672
Tier 1 capital (to quarterly average assets): Ratio for minimum capital ratios required	0.0300	0.0300
Consolidated, TB
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total capital (to risk-weighted assets): Actual amount	¥ 2,041,563	¥ 1,969,282
Total capital (to risk-weighted assets): Actual ratio	0.2067	0.2078
Tier 1 capital (to risk-weighted assets): Actual amount	¥ 1,770,924	¥ 1,803,306
Tier 1 capital (to risk-weighted assets): Actual ratio	0.1793	0.1903
Common Equity Tier 1 capital (to risk-weighted assets): Actual amount	¥ 1,620,889	¥ 1,640,458
Common Equity Tier 1 capital (to risk-weighted assets): Actual ratio	0.1641	0.1731
Leverage Ratio: Actual amount	¥ 1,770,924	¥ 1,803,306
Leverage Ratio: Actual ratio	0.0729	0.0677
Total capital (to risk-weighted assets): Amount for capital adequacy purposes	¥ 790,026	¥ 758,073
Total capital (to risk-weighted assets): Ratio for capital adequacy purposes	0.0800	0.0800
Tier 1 capital (to risk-weighted assets): Amount for capital adequacy purposes	¥ 592,519	¥ 568,555
Tier 1 capital (to risk-weighted assets): Ratio for capital adequacy purposes	0.0600	0.0600
Common Equity Tier 1 capital (to risk-weighted assets): Amount for capital adequacy purposes	¥ 444,389	¥ 426,416
Common Equity Tier 1 capital (to risk-weighted assets): Ratio for minimum capital ratios required	0.0450	0.0450
Leverage Ratio: Amount for capital adequacy purposes	¥ 728,488	¥ 798,855
Tier 1 capital (to quarterly average assets): Ratio for minimum capital ratios required	0.0300	0.0300
Stand-alone, BK
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total capital (to risk-weighted assets): Actual amount	¥ 11,115,302	¥ 11,167,553
Total capital (to risk-weighted assets): Actual ratio	0.1071	0.1191
Tier 1 capital (to risk-weighted assets): Actual amount	¥ 9,644,128	¥ 9,565,792
Tier 1 capital (to risk-weighted assets): Actual ratio	0.0930	0.1020
Common Equity Tier 1 capital (to risk-weighted assets): Actual amount	¥ 8,410,290	¥ 8,261,659
Common Equity Tier 1 capital (to risk-weighted assets): Actual ratio	0.0811	0.0881
Leverage Ratio: Actual amount	¥ 9,644,128	¥ 9,565,792
Leverage Ratio: Actual ratio	0.0402	0.0459
Total capital (to risk-weighted assets): Amount for capital adequacy purposes	¥ 8,295,019	¥ 7,498,348
Total capital (to risk-weighted assets): Ratio for capital adequacy purposes	0.0800	0.0800
Tier 1 capital (to risk-weighted assets): Amount for capital adequacy purposes	¥ 6,221,264	¥ 5,623,761
Tier 1 capital (to risk-weighted assets): Ratio for capital adequacy purposes	0.0600	0.0600
Common Equity Tier 1 capital (to risk-weighted assets): Amount for capital adequacy purposes	¥ 4,665,948	¥ 4,217,821
Common Equity Tier 1 capital (to risk-weighted assets): Ratio for minimum capital ratios required	0.0450	0.0450
Leverage Ratio: Amount for capital adequacy purposes	¥ 7,183,295	¥ 6,249,606
Tier 1 capital (to quarterly average assets): Ratio for minimum capital ratios required	0.0300	0.0300
Stand-alone, TB
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total capital (to risk-weighted assets): Actual amount	¥ 2,131,007	¥ 2,122,840
Total capital (to risk-weighted assets): Actual ratio	0.1960	0.1997
Tier 1 capital (to risk-weighted assets): Actual amount	¥ 1,861,150	¥ 1,957,340
Tier 1 capital (to risk-weighted assets): Actual ratio	0.1711	0.1842
Common Equity Tier 1 capital (to risk-weighted assets): Actual amount	¥ 1,711,650	¥ 1,794,840
Common Equity Tier 1 capital (to risk-weighted assets): Actual ratio	0.1574	0.1689
Leverage Ratio: Actual amount	¥ 1,861,150	¥ 1,957,340
Leverage Ratio: Actual ratio	0.0815	0.0781
Total capital (to risk-weighted assets): Amount for capital adequacy purposes	¥ 869,700	¥ 850,030
Total capital (to risk-weighted assets): Ratio for capital adequacy purposes	0.0800	0.0800
Tier 1 capital (to risk-weighted assets): Amount for capital adequacy purposes	¥ 652,275	¥ 637,523
Tier 1 capital (to risk-weighted assets): Ratio for capital adequacy purposes	0.0600	0.0600
Common Equity Tier 1 capital (to risk-weighted assets): Amount for capital adequacy purposes	¥ 489,206	¥ 478,142
Common Equity Tier 1 capital (to risk-weighted assets): Ratio for minimum capital ratios required	0.0450	0.0450
Leverage Ratio: Amount for capital adequacy purposes	¥ 684,297	¥ 751,302
Tier 1 capital (to quarterly average assets): Ratio for minimum capital ratios required	0.0300	0.0300

Regulatory Capital Requiremen_5

Regulatory Capital Requirements (Risk-adjusted Capital Amounts and Ratios, United States of America, MUAH) (Detail) - U.S. Basel III $ in Millions	Dec. 31, 2021 USD ($)	Dec. 31, 2020	Jan. 01, 2019
BK (US)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total capital (to risk-weighted assets): Actual amount	$ 16,265
Tier 1 capital (to risk-weighted assets): Actual amount	15,629
Tier 1 capital (to quarterly average assets): Actual amount	15,629
Common Equity Tier 1 capital (to risk-weighted assets): Actual amount	$ 15,629
Total capital (to risk-weighted assets): Actual ratio	0.1736
Tier 1 capital (to risk-weighted assets): Actual ratio	0.1668
Tier 1 capital (to quarterly average assets): Actual ratio	0.1214
Common Equity Tier 1 capital (to risk-weighted assets): Actual ratio	0.1668
Total capital (to risk-weighted assets): Amount for minimum capital ratios required	$ 9,840
Tier 1 capital (to risk-weighted assets): Amount for minimum capital ratios required	7,966
Tier 1 capital (to quarterly average assets): Amount for minimum capital ratios required	5,149
Common Equity Tier 1 capital (to risk-weighted assets): Amount for minimum capital ratios required	$ 6,560
Total capital (to risk-weighted assets): Ratio for minimum capital ratios required	0.1050
Tier 1 capital (to risk-weighted assets): Ratio for capital adequacy purposes	0.0850
Tier 1 capital (to quarterly average assets): Ratio for minimum capital ratios required	0.0400
Common Equity Tier 1 capital (to risk-weighted assets): Ratio for minimum capital ratios required	0.0700
Total capital (to risk-weighted assets): Amount OCC requires to be "well capitalized"	$ 9,371
Tier 1 capital (to risk-weighted assets): Amount OCC requires to be "well capitalized"	7,497
Tier 1 capital (to quarterly average assets): Amount OCC requires to be "well capitalized"	6,436
Common Equity Tier 1 capital (to risk-weighted assets): Amount OCC requires to be "well capitalized"	$ 6,091
Total capital (to risk-weighted assets): Ratios OCC requires to be "well capitalized"	0.1000
Tier One Risk Based Capital Required For Capital Adequacy With Buffer	$ 7,966
Tier 1 capital (to risk-weighted assets): Ratios OCC requires to be "well capitalized"	0.0800
Tier 1 capital (to quarterly average assets): Ratios OCC requires to be "well capitalized"	0.0500
Common Equity Tier 1 capital (to risk-weighted assets): Ratios OCC requires to be "well capitalized"	0.0650
Capital conservation buffer			2.50%
MUAH
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total capital (to risk-weighted assets): Actual amount	$ 17,177
Tier 1 capital (to risk-weighted assets): Actual amount	16,843
Tier 1 capital (to quarterly average assets): Actual amount	16,843
Common Equity Tier 1 capital (to risk-weighted assets): Actual amount	$ 16,843
Total capital (to risk-weighted assets): Actual ratio	0.1632
Tier 1 capital (to risk-weighted assets): Actual ratio	0.1601
Tier 1 capital (to quarterly average assets): Actual ratio	0.1044
Common Equity Tier 1 capital (to risk-weighted assets): Actual ratio	0.1601
Total capital (to risk-weighted assets): Amount for minimum capital ratios required	$ 11,890
Tier 1 capital (to quarterly average assets): Amount for minimum capital ratios required	6,453
Common Equity Tier 1 capital (to risk-weighted assets): Amount for minimum capital ratios required	$ 8,208
Total capital (to risk-weighted assets): Ratio for minimum capital ratios required	0.1130
Tier 1 capital (to quarterly average assets): Ratio for minimum capital ratios required	0.0400
Common Equity Tier 1 capital (to risk-weighted assets): Ratio for minimum capital ratios required	0.0780
Capital conservation buffer		3.30%
Tier 1 capital (to risk-weighted assets): Amount for capital adequacy purposes	$ 9,786
Tier 1 capital (to risk-weighted assets): Ratio for capital adequacy purposes	0.0930

Earnings (Loss) Per Common Sh_3

Earnings (Loss) Per Common Share Applicable to Common Shareholders of MUFG (Reconciliations of Net Income and Weighted Average Number of Common Shares Outstanding Used for Computation of Basic EPS to Adjusted Amounts for Computation of Diluted EPS) (Detail) - JPY (¥) ¥ / shares in Units, shares in Thousands, ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Income (loss) (Numerator):
Net income (loss) attributable to Mitsubishi UFJ Financial Group	¥ 599,908	¥ (83,320)	¥ 1,117,298
Effect of dilutive instruments:
Stock acquisition rights and restricted stock units—Morgan Stanley	(3,816)	(5,361)	(4,159)
Earnings (loss) applicable to common shareholders of Mitsubishi UFJ Financial Group and assumed conversions	¥ 596,092	¥ (88,681)	¥ 1,113,139
Shares (Denominator):
Weighted average common shares outstanding (in shares)	12,317,723	12,798,060	12,859,737
Effect of dilutive instruments:
Stock acquisition rights and the common shares of MUFG under the Board Incentive Plan (in shares)	1,132	0	0
Weighted average common shares for diluted computation (in shares)	12,318,855	12,798,060	12,859,737
Basic earnings (loss) per common share:
Earnings (loss) applicable to common shareholders of Mitsubishi UFJ Financial Group (in JPY per share)	¥ 48.70	¥ (6.51)	¥ 86.88
Diluted earnings (loss) per common share:
Earnings (loss) applicable to common shareholders of Mitsubishi UFJ Financial Group (in JPY per share)	¥ 48.39	¥ (6.93)	¥ 86.56

Derivative Financial Instrume_3

Derivative Financial Instruments (Notional Amounts of Derivative Contracts) (Detail) - JPY (¥) ¥ in Trillions	Mar. 31, 2023	Mar. 31, 2022
Derivative [Line Items]
Total	¥ 1,953.1	¥ 1,657.3
Interest rate contracts
Derivative [Line Items]
Total	1,625.6	1,391.8
Foreign exchange contracts
Derivative [Line Items]
Total	307.4	245
Equity contracts
Derivative [Line Items]
Total	5.3	7.4
Commodity contracts
Derivative [Line Items]
Total	0.1	0.1
Credit derivatives
Derivative [Line Items]
Total	11.5	9.8
Other
Derivative [Line Items]
Total	¥ 3.2	¥ 3.2

Derivative Financial Instrume_4

Derivative Financial Instruments (Fair Value Information on Derivative Instruments Recorded on Consolidated Balance Sheets) (Detail) - JPY (¥) ¥ in Billions	Mar. 31, 2023	Mar. 31, 2022
Derivatives, Fair Value [Line Items]
Total derivative assets	¥ 12,911	¥ 10,534
Total derivative liabilities	¥ 13,833	10,895
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Trading account assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Trading account liabilities (Notes 15, 23 and 31)
Interest rate contracts
Derivatives, Fair Value [Line Items]
Total derivative assets	¥ 7,445	5,445
Total derivative liabilities	8,697	5,652
Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Total derivative assets	5,281	4,803
Total derivative liabilities	5,018	4,908
Equity contracts
Derivatives, Fair Value [Line Items]
Total derivative assets	90	151
Total derivative liabilities	128	277
Commodity contracts
Derivatives, Fair Value [Line Items]
Total derivative assets	10	22
Total derivative liabilities	10	22
Credit derivatives
Derivatives, Fair Value [Line Items]
Total derivative assets	80	103
Total derivative liabilities	90	101
Other
Derivatives, Fair Value [Line Items]
Total derivative assets	5	10
Total derivative liabilities	(110)	(65)
Not designated as hedges
Derivatives, Fair Value [Line Items]
Total derivative assets	12,906	10,532
Total derivative liabilities	13,833	10,894
Not designated as hedges | Interest rate contracts
Derivatives, Fair Value [Line Items]
Total derivative assets	7,445	5,445
Total derivative liabilities	8,697	5,652
Not designated as hedges | Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Total derivative assets	5,276	4,801
Total derivative liabilities	5,018	4,907
Not designated as hedges | Equity contracts
Derivatives, Fair Value [Line Items]
Total derivative assets	90	151
Total derivative liabilities	128	277
Not designated as hedges | Commodity contracts
Derivatives, Fair Value [Line Items]
Total derivative assets	10	22
Total derivative liabilities	10	22
Not designated as hedges | Credit derivatives
Derivatives, Fair Value [Line Items]
Total derivative assets	80	103
Total derivative liabilities	90	101
Not designated as hedges | Other
Derivatives, Fair Value [Line Items]
Total derivative assets	5	10
Total derivative liabilities	(110)	(65)
Designated as hedges
Derivatives, Fair Value [Line Items]
Total derivative assets	5	2
Total derivative liabilities	0	1
Designated as hedges | Interest rate contracts
Derivatives, Fair Value [Line Items]
Total derivative assets	0	0
Total derivative liabilities	0	0
Designated as hedges | Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Total derivative assets	5	2
Total derivative liabilities	0	1
Designated as hedges | Equity contracts
Derivatives, Fair Value [Line Items]
Total derivative assets	0	0
Total derivative liabilities	0	0
Designated as hedges | Commodity contracts
Derivatives, Fair Value [Line Items]
Total derivative assets	0	0
Total derivative liabilities	0	0
Designated as hedges | Credit derivatives
Derivatives, Fair Value [Line Items]
Total derivative assets	0	0
Total derivative liabilities	0	0
Designated as hedges | Other
Derivatives, Fair Value [Line Items]
Total derivative assets	0	0
Total derivative liabilities	¥ 0	¥ 0

Derivative Financial Instrume_5

Derivative Financial Instruments (Gains and Losses for Trading and Risk Management Derivatives (Not Designated as Hedging Instruments)) (Detail) - JPY (¥) ¥ in Billions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Total	¥ 296	¥ (147)	¥ (510)
Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Total	263	51	70
Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Total	61	(39)	(91)
Equity contracts
Derivative Instruments, Gain (Loss) [Line Items]
Total	(13)	(98)	(269)
Credit derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Total	(20)	(34)	(53)
Other
Derivative Instruments, Gain (Loss) [Line Items]
Total	5	(27)	(167)
Foreign exchange gains (losses)—net
Derivative Instruments, Gain (Loss) [Line Items]
Total	58	(45)	(80)
Foreign exchange gains (losses)—net | Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Total	0	0	0
Foreign exchange gains (losses)—net | Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Total	61	(39)	(91)
Foreign exchange gains (losses)—net | Equity contracts
Derivative Instruments, Gain (Loss) [Line Items]
Total	0	0	0
Foreign exchange gains (losses)—net | Credit derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Total	0	0	0
Foreign exchange gains (losses)—net | Other
Derivative Instruments, Gain (Loss) [Line Items]
Total	(3)	(6)	11
Trading account profits (losses)—net
Derivative Instruments, Gain (Loss) [Line Items]
Total	238	(102)	(430)
Trading account profits (losses)—net | Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Total	263	51	70
Trading account profits (losses)—net | Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Total	0	0	0
Trading account profits (losses)—net | Equity contracts
Derivative Instruments, Gain (Loss) [Line Items]
Total	(13)	(98)	(269)
Trading account profits (losses)—net | Credit derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Total	(20)	(34)	(53)
Trading account profits (losses)—net | Other
Derivative Instruments, Gain (Loss) [Line Items]
Total	¥ 8	¥ (21)	¥ (178)

Derivative Financial Instrume_6

Derivative Financial Instruments (Protection Sold Through Credit Default Swaps) (Detail) - Protection sold - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
Credit Derivatives [Line Items]
Maximum potential/Notional amount, Expiring in 1 year or less	¥ 817,845	¥ 643,285
Maximum potential/Notional amount, Expiring in 1-5 years	3,787,877	2,982,687
Maximum potential/Notional amount, Expiring over 5 years	588,961	836,239
Maximum potential/Notional amount, Total	5,194,683	4,462,211
Credit derivative (asset) liability at fair value	(28,356)	(72,915)
Single name credit default swaps:
Credit Derivatives [Line Items]
Maximum potential/Notional amount, Expiring in 1 year or less	780,486	499,442
Maximum potential/Notional amount, Expiring in 1-5 years	2,535,528	2,224,643
Maximum potential/Notional amount, Expiring over 5 years	577,973	798,398
Maximum potential/Notional amount, Total	3,893,987	3,522,483
Credit derivative (asset) liability at fair value	(16,640)	(55,930)
Single name credit default swaps: | Investment grade
Credit Derivatives [Line Items]
Maximum potential/Notional amount, Expiring in 1 year or less	616,504	408,281
Maximum potential/Notional amount, Expiring in 1-5 years	2,222,393	1,874,796
Maximum potential/Notional amount, Expiring over 5 years	529,796	731,946
Maximum potential/Notional amount, Total	3,368,693	3,015,023
Credit derivative (asset) liability at fair value	(30,117)	(61,308)
Single name credit default swaps: | Non-investment grade
Credit Derivatives [Line Items]
Maximum potential/Notional amount, Expiring in 1 year or less	163,982	91,161
Maximum potential/Notional amount, Expiring in 1-5 years	313,135	349,847
Maximum potential/Notional amount, Expiring over 5 years	48,177	66,452
Maximum potential/Notional amount, Total	525,294	507,460
Credit derivative (asset) liability at fair value	13,477	5,378
Index and basket credit default swaps:
Credit Derivatives [Line Items]
Maximum potential/Notional amount, Expiring in 1 year or less	37,359	143,843
Maximum potential/Notional amount, Expiring in 1-5 years	1,252,349	758,044
Maximum potential/Notional amount, Expiring over 5 years	10,988	37,841
Maximum potential/Notional amount, Total	1,300,696	939,728
Credit derivative (asset) liability at fair value	(11,716)	(16,985)
Index and basket credit default swaps: | Investment grade
Credit Derivatives [Line Items]
Maximum potential/Notional amount, Expiring in 1 year or less	0	67,600
Maximum potential/Notional amount, Expiring in 1-5 years	217,259	458,153
Maximum potential/Notional amount, Expiring over 5 years	1,596	36,955
Maximum potential/Notional amount, Total	218,855	562,708
Credit derivative (asset) liability at fair value	(1,266)	(9,604)
Index and basket credit default swaps: | Non-investment grade
Credit Derivatives [Line Items]
Maximum potential/Notional amount, Expiring in 1 year or less	37,359	56,299
Maximum potential/Notional amount, Expiring in 1-5 years	599,638	19,936
Maximum potential/Notional amount, Expiring over 5 years	6,200	0
Maximum potential/Notional amount, Total	643,197	76,235
Credit derivative (asset) liability at fair value	(7,121)	(61)
Index and basket credit default swaps: | Not rated
Credit Derivatives [Line Items]
Maximum potential/Notional amount, Expiring in 1 year or less	0	19,944
Maximum potential/Notional amount, Expiring in 1-5 years	435,452	279,955
Maximum potential/Notional amount, Expiring over 5 years	3,192	886
Maximum potential/Notional amount, Total	438,644	300,785
Credit derivative (asset) liability at fair value	¥ (3,329)	¥ (7,320)

Derivative Financial Instrume_7

Derivative Financial Instruments (Narrative) (Detail) - JPY (¥) ¥ in Billions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Carrying value of credit protection, offsetting with purchased protection with identical underlying referenced entities, in approximate	¥ 27	¥ 70
Notional amounts of credit protection, offsetting with purchased protection with identical underlying referenced entities, in approximate	4,880	4,083
Aggregate fair value of derivative instruments with credit-risk-related contingent features in a liability position, in approximate	800	500
Aggregate fair value of derivative instruments with credit-risk-related contingent features in a liability position, posted collateral, in approximate	222	349
Additional collateral amount which could be requested if the MUFG Group's debt falls below investment grade	70	53
Early termination amount which could be requested if the MUFG Group's debt falls below investment grade	¥ 116	¥ 60

Obligations under Guarantees _3

Obligations under Guarantees and Other Off-balance Sheet Instruments (Narrative) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Guarantor Obligations [Line Items]
Amount of Obligations under Guarantees	¥ 74,741,000	¥ 60,874,000
Contractual maturities of guarantees mainly comprised of guarantees of housing loans, in years	5 years
Carrying amounts of the liabilities related to guarantees and similar instruments	¥ 1,243,157	814,734
Allowance for off-balance sheet instruments	¥ 48,615	51,852
Lending-related commitments which expire within one year, in approximate percentage	62%
Lending-related commitments which expire from one year to five years, in approximate percentage	34%
Lending-related commitments which expire after five years, in approximate percentage	4%
Portion syndicated out to third parties
Guarantor Obligations [Line Items]
Amount of Obligations under Guarantees	¥ 549,100	646,100
Options sold
Guarantor Obligations [Line Items]
Amount of Obligations under Guarantees	¥ 1,188,798	¥ 769,376

Obligations under Guarantees _4

Obligations under Guarantees and Other Off-balance Sheet Instruments (Contractual or Notional Amounts of Guarantees with Amount by Expiration Period) (Detail) - JPY (¥) ¥ in Billions	Mar. 31, 2023	Mar. 31, 2022
Guarantor Obligations [Line Items]
Maximum potential / Contractual or Notional amount, Total	¥ 74,741	¥ 60,874
Maximum potential / Contractual or Notional amount, Expiring in 1 year or less	38,139	27,629
Maximum potential / Contractual or Notional amount, Expiring in 1-5 years	18,577	19,396
Maximum potential / Contractual or Notional amount, Expiring in Over 5 years	18,025	13,849
Standby letters of credit and financial guarantees
Guarantor Obligations [Line Items]
Maximum potential / Contractual or Notional amount, Total	4,975	4,731
Maximum potential / Contractual or Notional amount, Expiring in 1 year or less	4,047	3,733
Maximum potential / Contractual or Notional amount, Expiring in 1-5 years	743	784
Maximum potential / Contractual or Notional amount, Expiring in Over 5 years	185	214
Performance guarantees
Guarantor Obligations [Line Items]
Maximum potential / Contractual or Notional amount, Total	4,179	3,828
Maximum potential / Contractual or Notional amount, Expiring in 1 year or less	3,100	2,807
Maximum potential / Contractual or Notional amount, Expiring in 1-5 years	930	887
Maximum potential / Contractual or Notional amount, Expiring in Over 5 years	149	134
Derivative instruments
Guarantor Obligations [Line Items]
Maximum potential / Contractual or Notional amount, Total	48,363	39,982
Maximum potential / Contractual or Notional amount, Expiring in 1 year or less	22,197	14,670
Maximum potential / Contractual or Notional amount, Expiring in 1-5 years	16,036	16,988
Maximum potential / Contractual or Notional amount, Expiring in Over 5 years	10,130	8,324
Liabilities of trust accounts
Guarantor Obligations [Line Items]
Maximum potential / Contractual or Notional amount, Total	17,139	12,262
Maximum potential / Contractual or Notional amount, Expiring in 1 year or less	8,780	6,413
Maximum potential / Contractual or Notional amount, Expiring in 1-5 years	798	672
Maximum potential / Contractual or Notional amount, Expiring in Over 5 years	7,561	5,177
Other
Guarantor Obligations [Line Items]
Maximum potential / Contractual or Notional amount, Total	85	71
Maximum potential / Contractual or Notional amount, Expiring in 1 year or less	15	6
Maximum potential / Contractual or Notional amount, Expiring in 1-5 years	70	65
Maximum potential / Contractual or Notional amount, Expiring in Over 5 years	¥ 0	¥ 0

Obligations under Guarantees _5

Obligations under Guarantees and Other Off-balance Sheet Instruments (Maximum Potential Amount of Future Payments Classified Based upon Internal Credit Ratings) (Detail) - JPY (¥) ¥ in Billions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Guarantor Obligations [Line Items]
Maximum potential / Contractual or Notional amount, Amount by borrower grade	¥ 74,741	¥ 60,874
Standby letters of credit and financial guarantees
Guarantor Obligations [Line Items]
Maximum potential / Contractual or Notional amount, Amount by borrower grade	4,975	4,731
Performance guarantees
Guarantor Obligations [Line Items]
Maximum potential / Contractual or Notional amount, Amount by borrower grade	4,179	3,828
Standby letters of credit, financial and performance guarantees
Guarantor Obligations [Line Items]
Maximum potential / Contractual or Notional amount, Amount by borrower grade	9,154	8,559
Normal | Standby letters of credit and financial guarantees
Guarantor Obligations [Line Items]
Maximum potential / Contractual or Notional amount, Amount by borrower grade	4,819	4,575
Normal | Performance guarantees
Guarantor Obligations [Line Items]
Maximum potential / Contractual or Notional amount, Amount by borrower grade	4,066	3,706
Normal | Standby letters of credit, financial and performance guarantees
Guarantor Obligations [Line Items]
Maximum potential / Contractual or Notional amount, Amount by borrower grade	¥ 8,885	8,281
Close Watch | Minimum
Guarantor Obligations [Line Items]
Accruing loans contractually past due, in day	90 days
Close Watch | Standby letters of credit and financial guarantees
Guarantor Obligations [Line Items]
Maximum potential / Contractual or Notional amount, Amount by borrower grade	¥ 78	121
Close Watch | Performance guarantees
Guarantor Obligations [Line Items]
Maximum potential / Contractual or Notional amount, Amount by borrower grade	53	73
Close Watch | Standby letters of credit, financial and performance guarantees
Guarantor Obligations [Line Items]
Maximum potential / Contractual or Notional amount, Amount by borrower grade	131	194
Likely to become Bankrupt or Legally/Virtually Bankrupt | Standby letters of credit and financial guarantees
Guarantor Obligations [Line Items]
Maximum potential / Contractual or Notional amount, Amount by borrower grade	17	31
Likely to become Bankrupt or Legally/Virtually Bankrupt | Performance guarantees
Guarantor Obligations [Line Items]
Maximum potential / Contractual or Notional amount, Amount by borrower grade	29	22
Likely to become Bankrupt or Legally/Virtually Bankrupt | Standby letters of credit, financial and performance guarantees
Guarantor Obligations [Line Items]
Maximum potential / Contractual or Notional amount, Amount by borrower grade	46	53
Not rated | Standby letters of credit and financial guarantees
Guarantor Obligations [Line Items]
Maximum potential / Contractual or Notional amount, Amount by borrower grade	61	4
Not rated | Performance guarantees
Guarantor Obligations [Line Items]
Maximum potential / Contractual or Notional amount, Amount by borrower grade	31	27
Not rated | Standby letters of credit, financial and performance guarantees
Guarantor Obligations [Line Items]
Maximum potential / Contractual or Notional amount, Amount by borrower grade	¥ 92	¥ 31

Obligations under Guarantees _6

Obligations under Guarantees and Other Off-balance Sheet Instruments (Contractual Amounts with Regard to Other Off-balance Sheet Instruments) (Detail) - JPY (¥) ¥ in Billions	Mar. 31, 2023	Mar. 31, 2022
Commitments to extend credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contractual amounts with regard to other off-balance sheet instruments	¥ 88,631	¥ 82,886
Commercial letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contractual amounts with regard to other off-balance sheet instruments	871	908
Commitments to make investments
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contractual amounts with regard to other off-balance sheet instruments	¥ 705	¥ 478

Variable Interest Entities (Ass

Variable Interest Entities (Assets and Liabilities of Consolidated Variable Interest Entities) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Variable Interest Entity [Line Items]
Total assets at end of fiscal year	¥ 381,735,733	¥ 367,650,018	¥ 353,824,625
Cash and due from banks	60,050,640	50,972,491
Interest-earning deposits in other banks	53,989,863	58,848,056
Trading account assets	46,168,461	42,668,336
Investment securities	62,261,931	55,815,751
Total liabilities	365,269,566	351,353,496
Deposits	235,276,781	224,589,943
Long-term debt	39,071,755	34,696,599
Consolidated VIEs
Variable Interest Entity [Line Items]
Total assets at end of fiscal year	21,101,620	18,958,567
Cash and due from banks	8,243	6,728
Interest-earning deposits in other banks	52,031	27,382
Trading account assets	1,367,928	1,252,308
Investment securities	2,076,737	1,824,892
Loans	16,598,585	15,651,462
All other assets	998,096	195,795
Total liabilities	614,936	584,032
Deposits	0	0
Other short-term borrowings	45,432	39,582
Long-term debt	406,429	449,231
All other liabilities	163,075	95,219
Consolidated VIEs | Pro forma, before transfer of assets and liabilities
Variable Interest Entity [Line Items]
Total assets at end of fiscal year	21,101,620
Cash and due from banks	8,243
Interest-earning deposits in other banks	52,031
Trading account assets	1,367,928
Investment securities	2,076,737
Loans	16,598,585
All other assets	998,096
Consolidated VIEs | Total consolidated assets before elimination
Variable Interest Entity [Line Items]
Total assets at end of fiscal year		26,382,625
Cash and due from banks		122,214
Interest-earning deposits in other banks		63,557
Trading account assets		1,306,671
Investment securities		2,392,134
Loans		22,270,506
All other assets		227,543
Total liabilities	27,220,347	25,782,756
Deposits	6,408,837	7,063,850
Other short-term borrowings	7,247,251	5,152,061
Long-term debt	11,900,840	11,830,663
All other liabilities	1,663,419	1,736,182
Consolidated VIEs | Total consolidated assets before elimination | Pro forma, before transfer of assets and liabilities
Variable Interest Entity [Line Items]
Total assets at end of fiscal year	27,841,574
Cash and due from banks	80,115
Interest-earning deposits in other banks	88,657
Trading account assets	1,431,484
Investment securities	2,677,372
Loans	22,538,621
All other assets	1,025,325
Consolidated VIEs | Total consolidated assets before elimination | Asset-backed conduits
Variable Interest Entity [Line Items]
Total assets at end of fiscal year	7,388,845	6,115,286
Cash and due from banks		114,679
Interest-earning deposits in other banks		24,959
Trading account assets		30,114
Investment securities		906,109
Loans		5,016,254
All other assets		23,171
Total liabilities	7,364,030	6,091,830
Deposits	0	0
Other short-term borrowings	5,587,813	4,443,656
Long-term debt	1,367,234	1,337,938
All other liabilities	408,983	310,236
Consolidated VIEs | Total consolidated assets before elimination | Asset-backed conduits | Pro forma, before transfer of assets and liabilities
Variable Interest Entity [Line Items]
Cash and due from banks	71,649
Interest-earning deposits in other banks	34,521
Trading account assets	47,606
Investment securities	1,027,862
Loans	6,185,514
All other assets	21,693
Consolidated VIEs | Total consolidated assets before elimination | Investment funds
Variable Interest Entity [Line Items]
Total assets at end of fiscal year		538,336
Cash and due from banks		578
Interest-earning deposits in other banks		28,021
Trading account assets		351,806
Investment securities		55,567
Loans		0
All other assets		102,364
Total liabilities	830,751	29,368
Deposits	0	0
Other short-term borrowings	817,292	0
Long-term debt	7,407	6,497
All other liabilities	6,052	22,871
Consolidated VIEs | Total consolidated assets before elimination | Investment funds | Pro forma, before transfer of assets and liabilities
Variable Interest Entity [Line Items]
Total assets at end of fiscal year	1,331,962
Cash and due from banks	0
Interest-earning deposits in other banks	46,157
Trading account assets	359,777
Investment securities	65,204
Loans	0
All other assets	860,824
Consolidated VIEs | Total consolidated assets before elimination | Special purpose entities created for structured financing
Variable Interest Entity [Line Items]
Total assets at end of fiscal year		192,200
Cash and due from banks		1,694
Interest-earning deposits in other banks		5,463
Trading account assets		7,294
Investment securities		0
Loans		119,002
All other assets		58,747
Total liabilities	127,768	101,814
Deposits	0	0
Other short-term borrowings	0	0
Long-term debt	109,352	95,218
All other liabilities	18,416	6,596
Consolidated VIEs | Total consolidated assets before elimination | Special purpose entities created for structured financing | Pro forma, before transfer of assets and liabilities
Variable Interest Entity [Line Items]
Total assets at end of fiscal year	248,952
Cash and due from banks	0
Interest-earning deposits in other banks	2,593
Trading account assets	8,624
Investment securities	0
Loans	135,606
All other assets	102,129
Consolidated VIEs | Total consolidated assets before elimination | Repackaged instruments
Variable Interest Entity [Line Items]
Total assets at end of fiscal year		342,771
Cash and due from banks		4,798
Interest-earning deposits in other banks		0
Trading account assets		134,387
Investment securities		111,711
Loans		88,209
All other assets		3,666
Total liabilities	245,829	345,606
Deposits	0	0
Other short-term borrowings	0	22,791
Long-term debt	230,285	248,535
All other liabilities	15,544	74,280
Consolidated VIEs | Total consolidated assets before elimination | Repackaged instruments | Pro forma, before transfer of assets and liabilities
Variable Interest Entity [Line Items]
Total assets at end of fiscal year	243,513
Cash and due from banks	7,882
Interest-earning deposits in other banks	0
Trading account assets	167,007
Investment securities	53,617
Loans	15,007
All other assets	0
Consolidated VIEs | Total consolidated assets before elimination | Securitization of the MUFG Group’s assets
Variable Interest Entity [Line Items]
Total assets at end of fiscal year		10,544,934
Cash and due from banks		0
Interest-earning deposits in other banks		1,204
Trading account assets		0
Investment securities		0
Loans		10,526,124
All other assets		17,606
Total liabilities	10,418,160	10,569,281
Deposits	0	0
Other short-term borrowings	0	0
Long-term debt	10,154,662	10,102,964
All other liabilities	263,498	466,317
Consolidated VIEs | Total consolidated assets before elimination | Securitization of the MUFG Group’s assets | Pro forma, before transfer of assets and liabilities
Variable Interest Entity [Line Items]
Total assets at end of fiscal year	10,389,398
Cash and due from banks	0
Interest-earning deposits in other banks	1,434
Trading account assets	0
Investment securities	0
Loans	10,371,275
All other assets	16,689
Consolidated VIEs | Total consolidated assets before elimination | Trust arrangements
Variable Interest Entity [Line Items]
Total assets at end of fiscal year		8,581,448
Cash and due from banks		0
Interest-earning deposits in other banks		0
Trading account assets		760,960
Investment securities		1,303,063
Loans		6,517,421
All other assets		4
Total liabilities	8,176,907	8,581,731
Deposits	6,408,837	7,063,850
Other short-term borrowings	840,690	683,346
Long-term debt	0	0
All other liabilities	927,380	834,535
Consolidated VIEs | Total consolidated assets before elimination | Trust arrangements | Pro forma, before transfer of assets and liabilities
Variable Interest Entity [Line Items]
Total assets at end of fiscal year	8,176,795
Cash and due from banks	0
Interest-earning deposits in other banks	0
Trading account assets	833,864
Investment securities	1,514,530
Loans	5,828,397
All other assets	4
Consolidated VIEs | Total consolidated assets before elimination | Other
Variable Interest Entity [Line Items]
Total assets at end of fiscal year		67,650
Cash and due from banks		465
Interest-earning deposits in other banks		3,910
Trading account assets		22,110
Investment securities		15,684
Loans		3,496
All other assets		21,985
Total liabilities	56,902	63,126
Deposits	0	0
Other short-term borrowings	1,456	2,268
Long-term debt	31,900	39,511
All other liabilities	23,546	21,347
Consolidated VIEs | Total consolidated assets before elimination | Other | Pro forma, before transfer of assets and liabilities
Variable Interest Entity [Line Items]
Total assets at end of fiscal year	62,109
Cash and due from banks	584
Interest-earning deposits in other banks	3,952
Trading account assets	14,606
Investment securities	16,159
Loans	2,822
All other assets	23,986
Consolidated VIEs | The amounts eliminated in consolidation
Variable Interest Entity [Line Items]
Total assets at end of fiscal year		(7,424,058)
Cash and due from banks		(115,486)
Interest-earning deposits in other banks		(36,175)
Trading account assets		(54,363)
Investment securities		(567,242)
Loans		(6,619,044)
All other assets		(31,748)
Total liabilities	(16,102,106)	(15,116,977)
Deposits	(302)	(756)
Other short-term borrowings	(3,696,647)	(2,590,224)
Long-term debt	(11,469,378)	(11,378,021)
All other liabilities	(935,779)	(1,147,976)
Consolidated VIEs | The amounts eliminated in consolidation | Pro forma, before transfer of assets and liabilities
Variable Interest Entity [Line Items]
Total assets at end of fiscal year	(6,739,954)
Cash and due from banks	(71,872)
Interest-earning deposits in other banks	(36,626)
Trading account assets	(63,556)
Investment securities	(600,635)
Loans	(5,940,036)
All other assets	(27,229)
Consolidated VIEs | The amount of liabilities with recourse to the general credit of the MUFG Group
Variable Interest Entity [Line Items]
Total liabilities	(10,503,305)	(10,081,747)
Deposits	(6,408,535)	(7,063,094)
Other short-term borrowings	(3,505,172)	(2,522,255)
Long-term debt	(25,033)	(3,411)
All other liabilities	¥ (564,565)	¥ (492,987)

Variable Interest Entities (A_2

Variable Interest Entities (Assets and Liabilities of Non-consolidated Variable Interest Entities) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Variable Interest Entity [Line Items]
Total assets	¥ 381,735,733	¥ 367,650,018	¥ 353,824,625
Total liabilities	365,269,566	351,353,496
Non-consolidated VIEs
Variable Interest Entity [Line Items]
Total assets	247,954,971	263,554,458
Maximum exposure	27,220,521	21,293,857
Total assets	20,616,842	16,606,190
Trading account assets	1,455,494	1,297,730
Investment securities	5,014,606	4,832,097
Loans	13,513,611	10,256,662
All other assets	633,131	219,701
Total liabilities	295,113	60,169
All other liabilities	295,113	60,169
Non-consolidated VIEs | Asset-backed conduits
Variable Interest Entity [Line Items]
Total assets	41,001,958	27,325,711
Maximum exposure	8,062,589	6,010,143
Total assets	6,384,079	4,858,210
Trading account assets	21,719	0
Investment securities	2,205,877	1,756,122
Loans	4,142,995	3,102,088
All other assets	13,488	0
Total liabilities	10,823	520
All other liabilities	10,823	520
Non-consolidated VIEs | Investment funds
Variable Interest Entity [Line Items]
Total assets	55,386,213	112,262,392
Maximum exposure	4,930,989	3,352,266
Total assets	3,446,109	2,622,407
Trading account assets	262,312	328,963
Investment securities	120,436	622,967
Loans	2,710,177	1,628,737
All other assets	353,184	41,740
Total liabilities	27,606	4,507
All other liabilities	27,606	4,507
Non-consolidated VIEs | Special purpose entities created for structured financing
Variable Interest Entity [Line Items]
Total assets	54,543,066	42,312,881
Maximum exposure	5,864,814	4,829,867
Total assets	3,907,598	3,275,008
Trading account assets	80,382	234,384
Investment securities	39,357	20,854
Loans	3,749,670	3,012,252
All other assets	38,189	7,518
Total liabilities	208,100	25,424
All other liabilities	208,100	25,424
Non-consolidated VIEs | Repackaged instruments
Variable Interest Entity [Line Items]
Total assets	9,034,058	7,533,839
Maximum exposure	4,372,581	3,627,418
Total assets	4,117,969	3,448,224
Trading account assets	944,795	563,524
Investment securities	2,641,384	2,424,602
Loans	386,793	373,834
All other assets	144,997	86,264
Total liabilities	2,230	1,590
All other liabilities	2,230	1,590
Non-consolidated VIEs | Other
Variable Interest Entity [Line Items]
Total assets	87,989,676	74,119,635
Maximum exposure	3,989,548	3,474,163
Total assets	2,761,087	2,402,341
Trading account assets	146,286	170,859
Investment securities	7,552	7,552
Loans	2,523,976	2,139,751
All other assets	83,273	84,179
Total liabilities	46,354	28,128
All other liabilities	¥ 46,354	¥ 28,128

Contingent Liabilities (Narrati

Contingent Liabilities (Narrative) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Allowance for repayment of excess interest	¥ 12,113	¥ 21,120
Provision (reversal) for repayment of excess interest recognized on Equity in earnings of equity method investee	¥ 0	¥ 23,332	¥ 0

Fees and Commissions Income (De

Fees and Commissions Income (Details of Fees and Commissions Income) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Contract Revenue [Line Items]
Total	¥ 1,701,637	¥ 1,658,863	¥ 1,527,283
Fees and commissions on deposits
Disaggregation of Contract Revenue [Line Items]
Total	49,785	51,032	50,131
Fees and commissions on remittances and transfers
Disaggregation of Contract Revenue [Line Items]
Total	147,582	157,236	165,288
Fees and commissions on foreign trading business
Disaggregation of Contract Revenue [Line Items]
Total	69,010	56,344	79,353
Fees and commissions on credit card business
Disaggregation of Contract Revenue [Line Items]
Total	230,386	207,080	199,625
Fees and commissions on security-related services
Disaggregation of Contract Revenue [Line Items]
Total	224,900	264,530	244,017
Fees and commissions on administration and management services for investment funds
Disaggregation of Contract Revenue [Line Items]
Total	282,282	286,549	235,497
Trust fees
Disaggregation of Contract Revenue [Line Items]
Total	131,069	133,322	125,658
Guarantee fees
Disaggregation of Contract Revenue [Line Items]
Total	47,986	45,849	43,889
Insurance commissions
Disaggregation of Contract Revenue [Line Items]
Total	49,420	42,353	42,117
Fees and commissions on real estate business
Disaggregation of Contract Revenue [Line Items]
Total	68,407	65,611	48,110
Other fees and commissions
Disaggregation of Contract Revenue [Line Items]
Total	¥ 400,810	¥ 348,957	¥ 293,598

Trading Account Profits and L_3

Trading Account Profits and Losses (Net Trading Gains (Losses)) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Trading Account Profits And Losses [Abstract]
Interest rate and other derivative contracts	¥ 238,162	¥ (102,122)	¥ (429,586)
Trading account securities, excluding derivatives	(1,030,260)	(722,298)	19,218
Trading account losses—net	(792,098)	(824,420)	(410,368)
Foreign exchange derivative contracts	57,914	(44,693)	(79,559)
Net trading losses	¥ (734,184)	¥ (869,113)	¥ (489,927)

Business Segments (Narrative) (

Business Segments (Narrative) (Detail) ¥ in Billions	12 Months Ended
	Mar. 31, 2023 segment	Mar. 31, 2022 JPY (¥)	Mar. 31, 2021 JPY (¥)	Mar. 31, 2020 JPY (¥)
Segment Reporting Information [Line Items]
Number of operating segments | segment	7
Operating Segments | Global Corporate & Investment Banking Business Group | Customer business
Segment Reporting Information [Line Items]
Modification impact in operating profits (losses)		¥ (6.5)	¥ (4.9)
Operating Segments | Global Commercial Banking Business Group | Customer business
Segment Reporting Information [Line Items]
Modification impact in operating profits (losses)		(0.9)	(0.8)
Operating Segments | Retail & Commercial Banking Business Group | Customer business
Segment Reporting Information [Line Items]
Modification impact in operating profits (losses)		11	9.1
Operating Segments | Japanese Corporate & Investment Banking Business Group | Customer business
Segment Reporting Information [Line Items]
Modification impact in operating profits (losses)		(0.3)	(5.7)
Operating Segments | Global Markets Business Group
Segment Reporting Information [Line Items]
Modification impact in operating profits (losses)		3	2.9
Operating Segments | Digital Service Business Group | Customer business
Segment Reporting Information [Line Items]
Modification impact in operating profits (losses)		(10.3)	(8.2)
Operating Segments | Asset Management & Investor Services Business Group | Customer business
Segment Reporting Information [Line Items]
Modification impact in operating profits (losses)			0.1	¥ 0.2
Other
Segment Reporting Information [Line Items]
Modification impact in operating profits (losses)		¥ 3.9	¥ 7.4

Business Segments (Financial In

Business Segments (Financial Information by Business Segment) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Business segment information
Net revenue:	¥ 4,515,800	¥ 4,048,400	¥ 4,004,600
Net interest income	2,389,414	1,970,581	2,004,094
Operating expenses	2,938,200	2,816,000	2,757,600
Operating profit (loss)	1,577,600	1,232,400	1,247,000
Fixed assets:	1,368,100	1,294,100
Increase in fixed assets	208,900
Depreciation	157,600
BK and TB
Business segment information
Net revenue:	2,150,600	1,871,300	1,877,800
Net interest income	1,854,600	1,152,600	971,400
Net fees	736,500	656,600	606,300
Other	(440,500)	62,100	300,100
Other than BK and TB
Business segment information
Net revenue:	2,365,200	2,177,100	2,126,800
Operating Segments | Customer business
Business segment information
Net revenue:	4,111,700	3,610,100	3,371,500
Operating expenses	2,494,000	2,435,400	2,364,000
Operating profit (loss)	1,617,700	1,174,700	1,007,500
Fixed assets:	711,200	635,400
Increase in fixed assets	151,500
Depreciation	109,800
Operating Segments | Customer business | BK and TB
Business segment information
Net revenue:	2,000,800	1,614,700	1,457,300
Net interest income	1,072,300	801,100	723,700
Net fees	803,100	721,200	667,500
Other	125,400	92,400	66,100
Operating Segments | Customer business | Other than BK and TB
Business segment information
Net revenue:	2,110,900	1,995,400	1,914,200
Operating Segments | Digital Service Business Group | Customer business
Business segment information
Net revenue:	747,600	741,600	744,700
Operating expenses	533,200	558,900	565,000
Operating profit (loss)	214,400	182,700	179,700
Fixed assets:	156,900	140,600
Increase in fixed assets	37,000
Depreciation	10,600
Operating Segments | Digital Service Business Group | Customer business | BK and TB
Business segment information
Net revenue:	251,400	257,200	255,500
Net interest income	215,400	219,300	223,400
Net fees	32,900	36,000	29,200
Other	3,100	1,900	2,900
Operating Segments | Digital Service Business Group | Customer business | Other than BK and TB
Business segment information
Net revenue:	496,200	484,400	489,200
Operating Segments | Retail & Commercial Banking Business Group | Customer business
Business segment information
Net revenue:	614,100	584,600	550,300
Operating expenses	456,800	490,900	492,200
Operating profit (loss)	157,300	93,700	58,100
Fixed assets:	201,900	191,700
Increase in fixed assets	41,900
Depreciation	21,100
Operating Segments | Retail & Commercial Banking Business Group | Customer business | BK and TB
Business segment information
Net revenue:	429,600	390,300	373,200
Net interest income	196,500	166,800	165,900
Net fees	200,500	201,700	188,900
Other	32,600	21,800	18,400
Operating Segments | Retail & Commercial Banking Business Group | Customer business | Other than BK and TB
Business segment information
Net revenue:	184,500	194,300	177,100
Operating Segments | Japanese Corporate & Investment Banking Business Group | Customer business
Business segment information
Net revenue:	805,700	623,200	565,700
Operating expenses	331,100	320,900	319,900
Operating profit (loss)	474,600	302,300	245,800
Fixed assets:	161,200	155,800
Increase in fixed assets	37,100
Depreciation	36,600
Operating Segments | Japanese Corporate & Investment Banking Business Group | Customer business | BK and TB
Business segment information
Net revenue:	647,400	496,800	453,500
Net interest income	355,000	231,600	187,400
Net fees	230,600	212,700	218,600
Other	61,800	52,500	47,500
Operating Segments | Japanese Corporate & Investment Banking Business Group | Customer business | Other than BK and TB
Business segment information
Net revenue:	158,300	126,400	112,200
Operating Segments | Global Commercial Banking Business Group | Customer business
Business segment information
Net revenue:	870,600	771,700	778,700
Operating expenses	580,300	528,000	501,700
Operating profit (loss)	290,300	243,700	277,000
Fixed assets:	1,100	1,000
Increase in fixed assets	600
Depreciation	200
Operating Segments | Global Commercial Banking Business Group | Customer business | BK and TB
Business segment information
Net revenue:	35,100	1,900	1,000
Net interest income	35,700	1,900	3,300
Net fees	0	0	0
Other	(600)	0	(2,300)
Operating Segments | Global Commercial Banking Business Group | Customer business | Other than BK and TB
Business segment information
Net revenue:	835,500	769,800	777,700
Operating Segments | Asset Management & Investor Services Business Group | Customer business
Business segment information
Net revenue:	360,800	348,900	293,400
Operating expenses	255,700	241,400	213,000
Operating profit (loss)	105,100	107,500	80,400
Fixed assets:	18,800	13,300
Increase in fixed assets	11,600
Depreciation	6,000
Operating Segments | Asset Management & Investor Services Business Group | Customer business | BK and TB
Business segment information
Net revenue:	105,400	106,300	99,400
Net interest income	9,400	9,300	5,500
Net fees	96,000	97,000	93,900
Other	0	0	0
Operating Segments | Asset Management & Investor Services Business Group | Customer business | Other than BK and TB
Business segment information
Net revenue:	255,400	242,600	194,000
Operating Segments | Global Corporate & Investment Banking Business Group | Customer business
Business segment information
Net revenue:	712,900	540,100	438,700
Operating expenses	336,900	295,300	272,200
Operating profit (loss)	376,000	244,800	166,500
Fixed assets:	171,200	133,000
Increase in fixed assets	23,400
Depreciation	35,200
Operating Segments | Global Corporate & Investment Banking Business Group | Customer business | BK and TB
Business segment information
Net revenue:	531,900	362,200	274,700
Net interest income	260,300	172,200	138,200
Net fees	243,100	173,800	136,900
Other	28,500	16,200	(400)
Operating Segments | Global Corporate & Investment Banking Business Group | Customer business | Other than BK and TB
Business segment information
Net revenue:	181,000	177,900	164,000
Operating Segments | Global Markets Business Group
Business segment information
Net revenue:	408,900	427,000	640,300
Operating expenses	271,800	253,000	243,100
Operating profit (loss)	137,100	174,000	397,200
Fixed assets:	110,600	108,400
Increase in fixed assets	23,200
Depreciation	28,300
Operating Segments | Global Markets Business Group | BK and TB
Business segment information
Net revenue:	130,600	203,400	386,300
Net interest income	710,400	231,500	166,900
Net fees	(16,600)	(8,700)	(2,400)
Other	(563,200)	(19,400)	221,800
Operating Segments | Global Markets Business Group | Other than BK and TB
Business segment information
Net revenue:	278,300	223,600	254,000
Other
Business segment information
Net revenue:	(4,800)	11,300	(7,200)
Operating expenses	172,400	127,600	150,500
Operating profit (loss)	(177,200)	(116,300)	(157,700)
Fixed assets:	546,300	550,300
Increase in fixed assets	34,200
Depreciation	19,500
Other | Subsidiaries
Business segment information
Fixed assets:	1,210,200	1,286,100
Other | BK and TB
Business segment information
Net revenue:	19,200	53,200	34,200
Net interest income	71,900	120,000	80,800
Net fees	(50,000)	(55,900)	(58,800)
Other	(2,700)	(10,900)	12,200
Other | Other than BK and TB
Business segment information
Net revenue:	¥ (24,000)	¥ (41,900)	¥ (41,400)

Business Segments (Reconciliati

Business Segments (Reconciliation of Operating Profit (Loss) from Segments to Consolidated Statements of Income) (Detail) - JPY (¥)	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating profit:	¥ 1,577,600,000,000	¥ 1,232,400,000,000	¥ 1,247,000,000,000
Provision for credit losses	(8,148,000,000)	(277,995,000,000)	(484,210,000,000)
Trading account losses—net	(792,098,000,000)	(824,420,000,000)	(410,368,000,000)
Equity investment securities gains (losses)—net	18,313,000,000	(38,042,000,000)	47,775,000,000
Foreign exchange gains (losses)—net	25,232,000,000	106,868,000,000	99,337,000,000
Equity in earnings of equity method investees—net	398,086,000,000	436,583,000,000	355,730,000,000
Impairment of goodwill	(33,553,000,000)	0	(147,564,000,000)
Impairment of intangible assets	(5,151,000,000)	(33,301,000,000)	(21,680,000,000)
Reversal of (provision for) off-balance sheet credit instruments	(20,747,000,000)	(46,339,000,000)	56,749,000,000
Reversal of impairment (impairment) of assets held for sale	134,141,000,000	(134,141,000,000)	0
Gain on sale of MUFG Union Bank	557,954,000,000	0	0
Income (loss) before income tax expense (benefit)	656,734,000,000	(58,727,000,000)	1,608,342,000,000
Fixed assets:	1,368,100,000,000	1,294,100,000,000
Segment Reconciling Items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating profit:	1,578,000,000,000	1,232,000,000,000	1,247,000,000,000
Provision for credit losses	(8,000,000,000)	(278,000,000,000)	(484,000,000,000)
Trading account losses—net	(1,385,000,000,000)	(1,174,000,000,000)	(678,000,000,000)
Equity investment securities gains (losses)—net	(139,000,000,000)	(109,000,000,000)	1,480,000,000,000
Debt investment securities gains (losses)—net	517,000,000,000	139,000,000,000	(129,000,000,000)
Foreign exchange gains (losses)—net	(33,000,000,000)	(9,000,000,000)	9,000,000,000
Equity in earnings of equity method investees—net	398,000,000,000	437,000,000,000	356,000,000,000
Impairment of goodwill	(34,000,000,000)	0
Impairment of intangible assets	(5,000,000,000)	(33,000,000,000)	(22,000,000,000)
Reversal of (provision for) off-balance sheet credit instruments	(21,000,000,000)	(46,000,000,000)	57,000,000,000
Reversal of impairment (impairment) of assets held for sale	134,000,000,000	(134,000,000,000)	0
Loss on valuation adjustment for loans held for sale held by MUFG Union Bank	(283,000,000,000)	(3,000,000,000)	0
Gain on sale of MUFG Union Bank	558,000,000,000	0	0
Loss on pension buyout	(84,000,000,000)	0	0
Other—net	(536,000,000,000)	(81,000,000,000)	(80,000,000,000)
Income (loss) before income tax expense (benefit)	657,000,000,000	(59,000,000,000)	1,608,000,000,000
Fixed assets:	0	2,268,000,000,000	2,332,000,000,000
U.S. GAAP adjustments and other	0	974,000,000,000	964,000,000,000
Segment Reconciling Items | Japanese GAAP
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Fixed assets:	¥ 0	¥ 1,294,000,000,000	¥ 1,368,000,000,000

Foreign Activities (Estimated F

Foreign Activities (Estimated Financial Information by Geographic Areas) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Foreign Activities Disclosure [Line Items]
Total revenue	¥ 6,306,832	¥ 3,925,727	¥ 5,909,783
Total expense	5,650,098	3,984,454	4,301,441
Income before income tax expense	656,734	(58,727)	1,608,342
Net income (loss) attributable to Mitsubishi UFJ Financial Group	599,908	(83,320)	1,117,298
Total assets at end of fiscal year	381,735,733	367,650,018	353,824,625
Domestic, Japan
Foreign Activities Disclosure [Line Items]
Total revenue	2,617,973	2,160,509	3,348,733
Total expense	2,074,369	2,198,650	2,316,323
Income before income tax expense	543,604	(38,141)	1,032,410
Net income (loss) attributable to Mitsubishi UFJ Financial Group	616,243	(7,380)	627,138
Total assets at end of fiscal year	249,539,149	246,637,054	240,603,939
Foreign, United States of America
Foreign Activities Disclosure [Line Items]
Total revenue	1,527,756	500,590	741,137
Total expense	1,621,492	666,564	713,441
Income before income tax expense	(93,736)	(165,974)	27,696
Net income (loss) attributable to Mitsubishi UFJ Financial Group	113,038	(498,205)	(231,116)
Total assets at end of fiscal year	59,695,647	54,576,602	49,478,851
Foreign, Europe
Foreign Activities Disclosure [Line Items]
Total revenue	173,013	67,687	356,112
Total expense	370,130	311,639	263,753
Income before income tax expense	(197,117)	(243,952)	92,359
Net income (loss) attributable to Mitsubishi UFJ Financial Group	(246,138)	(344,044)	74,230
Total assets at end of fiscal year	24,675,334	22,319,350	21,126,639
Foreign, Asia / Oceania Excluding Japan
Foreign Activities Disclosure [Line Items]
Total revenue	1,479,618	975,340	1,134,233
Total expense	1,282,806	726,042	889,494
Income before income tax expense	196,812	249,298	244,739
Net income (loss) attributable to Mitsubishi UFJ Financial Group	9,074	506,621	366,880
Total assets at end of fiscal year	34,452,071	31,909,321	31,368,443
Foreign, Other areas
Foreign Activities Disclosure [Line Items]
Total revenue	508,472	221,601	329,568
Total expense	301,301	81,559	118,430
Income before income tax expense	207,171	140,042	211,138
Net income (loss) attributable to Mitsubishi UFJ Financial Group	107,691	259,688	280,166
Total assets at end of fiscal year	¥ 13,373,532	¥ 12,207,691	¥ 11,246,753

Foreign Activities (Analysis of

Foreign Activities (Analysis of Certain Asset and Liability Accounts Related to Foreign Activities) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Foreign Activities Disclosure [Line Items]
Cash and due from banks	¥ 60,050,640	¥ 50,972,491
Interest-earning deposits in other banks	53,989,863	58,848,056
Cash, due from banks and interest-earning deposits in other banks	114,040,503	109,820,547	¥ 103,324,201
Trading account assets	46,168,461	42,668,336
Investment securities	62,261,931	55,815,751
Loans—net of unearned income, unamortized premiums and deferred loan fees	119,955,460	113,149,393
Deposits	235,276,781	224,589,943
Funds borrowed:
Call money, funds purchased	3,437,614	2,416,313
Payables under repurchase agreements	40,132,459	27,725,612
Payables under securities lending transactions	1,137,693	1,021,887
Other short-term borrowings	8,438,014	16,543,137
Long-term debt	39,071,755	34,696,599
Trading account liabilities	14,178,275	11,019,046
Foreign
Foreign Activities Disclosure [Line Items]
Cash and due from banks	738,309	1,050,661
Interest-earning deposits in other banks	17,518,035	12,459,897
Cash, due from banks and interest-earning deposits in other banks	18,256,344	13,510,558
Trading account assets	31,158,079	26,849,102
Investment securities	11,456,886	7,157,322
Loans—net of unearned income, unamortized premiums and deferred loan fees	50,981,148	45,338,581
Deposits	52,278,932	46,932,643
Funds borrowed:
Call money, funds purchased	18,088	306,053
Payables under repurchase agreements	10,730,611	10,769,853
Payables under securities lending transactions	54,985	144,854
Other short-term borrowings	5,058,454	3,940,997
Long-term debt	1,530,782	1,596,146
Total	17,392,920	16,757,903
Trading account liabilities	¥ 8,611,974	¥ 5,919,017

Fair Value (Assets and Liabilit

Fair Value (Assets and Liabilities Measured at Fair Value by Level on Recurring Basis) (Detail) - JPY (¥)	Mar. 31, 2023	Mar. 31, 2022
Assets
Trading derivative assets	¥ 12,911,000,000,000	¥ 10,534,000,000,000
Available-for-sale debt securities, Fair value	35,740,802,000,000	45,798,442,000,000
Equity securities	5,001,048,000,000	5,422,200,000,000
Liabilities
Trading derivative liabilities	13,833,000,000,000	10,895,000,000,000
Obligation to return securities received as collateral	6,891,545,000,000	6,826,215,000,000
Interest rate contracts
Assets
Trading derivative assets	7,445,000,000,000	5,445,000,000,000
Liabilities
Trading derivative liabilities	8,697,000,000,000	5,652,000,000,000
Foreign exchange contracts
Assets
Trading derivative assets	5,281,000,000,000	4,803,000,000,000
Liabilities
Trading derivative liabilities	5,018,000,000,000	4,908,000,000,000
Equity contracts
Assets
Trading derivative assets	90,000,000,000	151,000,000,000
Liabilities
Trading derivative liabilities	128,000,000,000	277,000,000,000
Commodity contracts
Assets
Trading derivative assets	10,000,000,000	22,000,000,000
Liabilities
Trading derivative liabilities	10,000,000,000	22,000,000,000
Credit derivatives
Assets
Trading derivative assets	80,000,000,000	103,000,000,000
Liabilities
Trading derivative liabilities	90,000,000,000	101,000,000,000
Other
Assets
Trading derivative assets	5,000,000,000	10,000,000,000
Liabilities
Trading derivative liabilities	(110,000,000,000)	(65,000,000,000)
Japanese national government and Japanese government agency bonds
Assets
Available-for-sale debt securities, Fair value	26,046,603,000,000	34,327,764,000,000
Japanese prefectural and municipal bonds
Assets
Available-for-sale debt securities, Fair value	2,759,941,000,000	4,146,144,000,000
Foreign government and official institution bonds
Assets
Available-for-sale debt securities, Fair value	2,922,742,000,000	2,631,343,000,000
Corporate bonds
Assets
Available-for-sale debt securities, Fair value	1,058,161,000,000	1,090,148,000,000
Residential mortgage-backed securities
Assets
Available-for-sale debt securities, Fair value	1,110,254,000,000	900,407,000,000
Asset-backed securities
Assets
Available-for-sale debt securities, Fair value	1,430,315,000,000	1,588,420,000,000
Other debt securities
Assets
Available-for-sale debt securities, Fair value	412,786,000,000	103,579,000,000
Commercial paper
Assets
Available-for-sale debt securities, Fair value		1,010,637,000,000
Fair Value, Measurements, Recurring
Assets
Trading account assets:	33,026,942,000,000	31,967,627,000,000
Trading derivative assets	12,901,727,000,000	10,521,431,000,000
Loans held for sale	13,820,000,000
Available-for-sale debt securities, Fair value	35,740,802,000,000	45,798,442,000,000
Equity securities	4,538,354,000,000	5,042,026,000,000
Other	2,476,293,000,000	1,477,532,000,000
Assets held for sale		3,291,343,000,000
Assets held for sale:
Investment securities		3,188,257,000,000
Other		103,086,000,000
Total	88,697,938,000,000	98,098,401,000,000
Liabilities
Trading securities sold, not yet purchased	234,907,000,000	59,826,000,000
Trading derivative liabilities	13,943,368,000,000	10,959,220,000,000
Obligation to return securities received as collateral	6,891,545,000,000	6,826,215,000,000
Other	387,145,000,000	541,598,000,000
Disposal group, including discontinued operation, liabilities		53,199,000,000
Liabilities held for sale:
Other		53,199,000,000
Total	21,456,965,000,000	18,440,058,000,000
Fair Value, Measurements, Recurring | Dispositions of certain business of MUAH
Assets
Trading account assets:	2,685,906,000,000	2,904,839,000,000
Fair Value, Measurements, Recurring | Dispositions of certain business of MUAH | NAV of private equity funds
Liabilities held for sale:
Investment securities valued at net asset value	225,972,000,000	179,278,000,000
Unfunded commitments	172,562,000,000	110,360,000,000
Fair Value, Measurements, Recurring | Level 1
Assets
Trading account assets:	19,098,208,000,000	17,170,976,000,000
Trading derivative assets	84,406,000,000	201,860,000,000
Loans held for sale	0
Available-for-sale debt securities, Fair value	25,236,359,000,000	32,672,696,000,000
Equity securities	4,362,017,000,000	4,834,102,000,000
Other	1,535,446,000,000	1,434,046,000,000
Assets held for sale		421,450,000,000
Assets held for sale:
Investment securities		409,618,000,000
Other		11,832,000,000
Total	50,316,436,000,000	56,735,130,000,000
Liabilities
Trading securities sold, not yet purchased	232,287,000,000	57,371,000,000
Trading derivative liabilities	163,129,000,000	217,570,000,000
Obligation to return securities received as collateral	6,664,578,000,000	6,670,482,000,000
Other	0	0
Disposal group, including discontinued operation, liabilities		852,000,000
Liabilities held for sale:
Other		852,000,000
Total	7,059,994,000,000	6,946,275,000,000
Fair Value, Measurements, Recurring | Level 1 | Dispositions of certain business of MUAH
Assets
Trading account assets:	1,241,446,000,000	1,633,726,000,000
Fair Value, Measurements, Recurring | Level 2
Assets
Trading account assets:	12,746,415,000,000	13,998,654,000,000
Trading derivative assets	12,674,978,000,000	10,204,531,000,000
Loans held for sale	13,820,000,000
Available-for-sale debt securities, Fair value	10,250,511,000,000	12,912,810,000,000
Equity securities	101,576,000,000	152,041,000,000
Other	848,596,000,000	38,574,000,000
Assets held for sale		2,791,372,000,000
Assets held for sale:
Investment securities		2,713,377,000,000
Other		77,995,000,000
Total	36,635,896,000,000	40,097,982,000,000
Liabilities
Trading securities sold, not yet purchased	2,620,000,000	2,455,000,000
Trading derivative liabilities	13,718,992,000,000	10,697,699,000,000
Obligation to return securities received as collateral	158,763,000,000	155,733,000,000
Other	313,482,000,000	525,135,000,000
Disposal group, including discontinued operation, liabilities		50,744,000,000
Liabilities held for sale:
Other		50,744,000,000
Total	14,193,857,000,000	11,431,766,000,000
Fair Value, Measurements, Recurring | Level 2 | Dispositions of certain business of MUAH
Assets
Trading account assets:	1,266,344,000,000	1,103,907,000,000
Fair Value, Measurements, Recurring | Level 3
Assets
Trading account assets:	1,182,319,000,000	797,997,000,000
Trading derivative assets	142,343,000,000	115,040,000,000
Loans held for sale	0
Available-for-sale debt securities, Fair value	253,932,000,000	212,936,000,000
Equity securities	74,761,000,000	55,883,000,000
Other	92,251,000,000	4,912,000,000
Assets held for sale		78,521,000,000
Assets held for sale:
Investment securities		65,262,000,000
Other		13,259,000,000
Total	1,745,606,000,000	1,265,289,000,000
Liabilities
Trading securities sold, not yet purchased	0	0
Trading derivative liabilities	61,247,000,000	43,951,000,000
Obligation to return securities received as collateral	68,204,000,000	0
Other	73,663,000,000	16,463,000,000
Disposal group, including discontinued operation, liabilities		1,603,000,000
Liabilities held for sale:
Other		1,603,000,000
Total	203,114,000,000	62,017,000,000
Fair Value, Measurements, Recurring | Level 3 | Dispositions of certain business of MUAH
Assets
Trading account assets:	178,116,000,000	167,206,000,000
Fair Value, Measurements, Recurring | Japanese national government and Japanese government agency bonds
Assets
Available-for-sale debt securities, Fair value	26,046,603,000,000	34,327,764,000,000
Fair Value, Measurements, Recurring | Japanese national government and Japanese government agency bonds | Debt securities
Assets
Trading account assets:	6,422,025,000,000	8,271,741,000,000
Fair Value, Measurements, Recurring | Japanese national government and Japanese government agency bonds | Level 1
Assets
Available-for-sale debt securities, Fair value	23,292,055,000,000	30,989,319,000,000
Fair Value, Measurements, Recurring | Japanese national government and Japanese government agency bonds | Level 1 | Debt securities
Assets
Trading account assets:	6,092,523,000,000	7,927,707,000,000
Fair Value, Measurements, Recurring | Japanese national government and Japanese government agency bonds | Level 2
Assets
Available-for-sale debt securities, Fair value	2,754,548,000,000	3,338,445,000,000
Fair Value, Measurements, Recurring | Japanese national government and Japanese government agency bonds | Level 2 | Debt securities
Assets
Trading account assets:	329,502,000,000	344,034,000,000
Fair Value, Measurements, Recurring | Japanese national government and Japanese government agency bonds | Level 3
Assets
Available-for-sale debt securities, Fair value	0	0
Fair Value, Measurements, Recurring | Japanese national government and Japanese government agency bonds | Level 3 | Debt securities
Assets
Trading account assets:	0	0
Fair Value, Measurements, Recurring | Japanese prefectural and municipal bonds
Assets
Available-for-sale debt securities, Fair value	2,759,941,000,000	4,146,144,000,000
Fair Value, Measurements, Recurring | Japanese prefectural and municipal bonds | Debt securities
Assets
Trading account assets:	279,168,000,000	132,097,000,000
Fair Value, Measurements, Recurring | Japanese prefectural and municipal bonds | Level 1
Assets
Available-for-sale debt securities, Fair value	0	0
Fair Value, Measurements, Recurring | Japanese prefectural and municipal bonds | Level 1 | Debt securities
Assets
Trading account assets:	0	0
Fair Value, Measurements, Recurring | Japanese prefectural and municipal bonds | Level 2
Assets
Available-for-sale debt securities, Fair value	2,759,941,000,000	4,146,144,000,000
Fair Value, Measurements, Recurring | Japanese prefectural and municipal bonds | Level 2 | Debt securities
Assets
Trading account assets:	279,168,000,000	132,097,000,000
Fair Value, Measurements, Recurring | Japanese prefectural and municipal bonds | Level 3
Assets
Available-for-sale debt securities, Fair value	0	0
Fair Value, Measurements, Recurring | Japanese prefectural and municipal bonds | Level 3 | Debt securities
Assets
Trading account assets:	0	0
Fair Value, Measurements, Recurring | Foreign government and official institution bonds
Assets
Available-for-sale debt securities, Fair value	2,922,742,000,000	2,631,343,000,000
Fair Value, Measurements, Recurring | Foreign government and official institution bonds | Debt securities
Assets
Trading account assets:	12,255,133,000,000	8,079,219,000,000
Fair Value, Measurements, Recurring | Foreign government and official institution bonds | Level 1
Assets
Available-for-sale debt securities, Fair value	1,944,304,000,000	1,683,377,000,000
Fair Value, Measurements, Recurring | Foreign government and official institution bonds | Level 1 | Debt securities
Assets
Trading account assets:	11,760,274,000,000	7,606,345,000,000
Fair Value, Measurements, Recurring | Foreign government and official institution bonds | Level 2
Assets
Available-for-sale debt securities, Fair value	978,438,000,000	936,076,000,000
Fair Value, Measurements, Recurring | Foreign government and official institution bonds | Level 2 | Debt securities
Assets
Trading account assets:	493,691,000,000	471,163,000,000
Fair Value, Measurements, Recurring | Foreign government and official institution bonds | Level 3
Assets
Available-for-sale debt securities, Fair value	0	11,890,000,000
Fair Value, Measurements, Recurring | Foreign government and official institution bonds | Level 3 | Debt securities
Assets
Trading account assets:	1,168,000,000	1,711,000,000
Fair Value, Measurements, Recurring | Corporate bonds
Assets
Available-for-sale debt securities, Fair value	1,058,161,000,000	1,090,148,000,000
Fair Value, Measurements, Recurring | Corporate bonds | Debt securities
Assets
Trading account assets:	2,256,389,000,000	2,668,750,000,000
Fair Value, Measurements, Recurring | Corporate bonds | Level 1
Assets
Available-for-sale debt securities, Fair value	0	0
Fair Value, Measurements, Recurring | Corporate bonds | Level 1 | Debt securities
Assets
Trading account assets:	3,965,000,000	3,198,000,000
Fair Value, Measurements, Recurring | Corporate bonds | Level 2
Assets
Available-for-sale debt securities, Fair value	1,056,191,000,000	1,087,059,000,000
Fair Value, Measurements, Recurring | Corporate bonds | Level 2 | Debt securities
Assets
Trading account assets:	2,252,424,000,000	2,664,869,000,000
Fair Value, Measurements, Recurring | Corporate bonds | Level 3
Assets
Available-for-sale debt securities, Fair value	1,970,000,000	3,089,000,000
Fair Value, Measurements, Recurring | Corporate bonds | Level 3 | Debt securities
Assets
Trading account assets:	0	683,000,000
Fair Value, Measurements, Recurring | Residential mortgage-backed securities
Assets
Available-for-sale debt securities, Fair value	1,110,254,000,000	900,407,000,000
Fair Value, Measurements, Recurring | Residential mortgage-backed securities | Debt securities
Assets
Trading account assets:	4,978,709,000,000	6,792,386,000,000
Fair Value, Measurements, Recurring | Residential mortgage-backed securities | Level 1
Assets
Available-for-sale debt securities, Fair value	0	0
Fair Value, Measurements, Recurring | Residential mortgage-backed securities | Level 1 | Debt securities
Assets
Trading account assets:	0	0
Fair Value, Measurements, Recurring | Residential mortgage-backed securities | Level 2
Assets
Available-for-sale debt securities, Fair value	1,110,239,000,000	900,392,000,000
Fair Value, Measurements, Recurring | Residential mortgage-backed securities | Level 2 | Debt securities
Assets
Trading account assets:	4,978,709,000,000	6,792,386,000,000
Fair Value, Measurements, Recurring | Residential mortgage-backed securities | Level 3
Assets
Available-for-sale debt securities, Fair value	15,000,000	15,000,000
Fair Value, Measurements, Recurring | Residential mortgage-backed securities | Level 3 | Debt securities
Assets
Trading account assets:	0	0
Fair Value, Measurements, Recurring | Commercial mortgage-backed securities | Debt securities
Assets
Trading account assets:	4,627,000,000	7,402,000,000
Fair Value, Measurements, Recurring | Commercial mortgage-backed securities | Level 1 | Debt securities
Assets
Trading account assets:	0	0
Fair Value, Measurements, Recurring | Commercial mortgage-backed securities | Level 2 | Debt securities
Assets
Trading account assets:	4,627,000,000	7,402,000,000
Fair Value, Measurements, Recurring | Commercial mortgage-backed securities | Level 3 | Debt securities
Assets
Trading account assets:	0	0
Fair Value, Measurements, Recurring | Asset-backed securities
Assets
Available-for-sale debt securities, Fair value	1,430,315,000,000	1,588,420,000,000
Fair Value, Measurements, Recurring | Asset-backed securities | Debt securities
Assets
Trading account assets:	1,879,292,000,000	1,526,106,000,000
Fair Value, Measurements, Recurring | Asset-backed securities | Level 1
Assets
Available-for-sale debt securities, Fair value	0	0
Fair Value, Measurements, Recurring | Asset-backed securities | Level 1 | Debt securities
Assets
Trading account assets:	0	0
Fair Value, Measurements, Recurring | Asset-backed securities | Level 2
Assets
Available-for-sale debt securities, Fair value	1,247,377,000,000	1,464,041,000,000
Fair Value, Measurements, Recurring | Asset-backed securities | Level 2 | Debt securities
Assets
Trading account assets:	1,210,381,000,000	1,210,875,000,000
Fair Value, Measurements, Recurring | Asset-backed securities | Level 3
Assets
Available-for-sale debt securities, Fair value	182,938,000,000	124,379,000,000
Fair Value, Measurements, Recurring | Asset-backed securities | Level 3 | Debt securities
Assets
Trading account assets:	668,911,000,000	315,231,000,000
Fair Value, Measurements, Recurring | Other debt securities
Assets
Available-for-sale debt securities, Fair value	412,786,000,000	103,579,000,000
Fair Value, Measurements, Recurring | Other debt securities | Debt securities
Assets
Trading account assets:	334,124,000,000	313,166,000,000
Fair Value, Measurements, Recurring | Other debt securities | Level 1
Assets
Available-for-sale debt securities, Fair value	0	0
Fair Value, Measurements, Recurring | Other debt securities | Level 1 | Debt securities
Assets
Trading account assets:	0	0
Fair Value, Measurements, Recurring | Other debt securities | Level 2
Assets
Available-for-sale debt securities, Fair value	343,777,000,000	30,016,000,000
Fair Value, Measurements, Recurring | Other debt securities | Level 2 | Debt securities
Assets
Trading account assets:	0	0
Fair Value, Measurements, Recurring | Other debt securities | Level 3
Assets
Available-for-sale debt securities, Fair value	69,009,000,000	73,563,000,000
Fair Value, Measurements, Recurring | Other debt securities | Level 3 | Debt securities
Assets
Trading account assets:	334,124,000,000	313,166,000,000
Fair Value, Measurements, Recurring | Commercial paper
Assets
Available-for-sale debt securities, Fair value		1,010,637,000,000
Fair Value, Measurements, Recurring | Commercial paper | Debt securities
Assets
Trading account assets:	1,931,569,000,000	1,271,921,000,000
Fair Value, Measurements, Recurring | Commercial paper | Level 1
Assets
Available-for-sale debt securities, Fair value		0
Fair Value, Measurements, Recurring | Commercial paper | Level 1 | Debt securities
Assets
Trading account assets:	0	0
Fair Value, Measurements, Recurring | Commercial paper | Level 2
Assets
Available-for-sale debt securities, Fair value		1,010,637,000,000
Fair Value, Measurements, Recurring | Commercial paper | Level 2 | Debt securities
Assets
Trading account assets:	1,931,569,000,000	1,271,921,000,000
Fair Value, Measurements, Recurring | Commercial paper | Level 3
Assets
Available-for-sale debt securities, Fair value		0
Fair Value, Measurements, Recurring | Commercial paper | Level 3 | Debt securities
Assets
Trading account assets:	0	0
Fair Value, Measurements, Recurring | Marketable equity securities
Assets
Equity securities	4,463,593,000,000	4,986,143,000,000
Fair Value, Measurements, Recurring | Marketable equity securities | Level 1
Assets
Equity securities	4,362,017,000,000	4,834,102,000,000
Fair Value, Measurements, Recurring | Marketable equity securities | Level 2
Assets
Equity securities	101,576,000,000	152,041,000,000
Fair Value, Measurements, Recurring | Marketable equity securities | Level 3
Assets
Equity securities	0	0
Fair Value, Measurements, Recurring | Nonmarketable equity securities
Assets
Equity securities	74,761,000,000	55,883,000,000
Fair Value, Measurements, Recurring | Nonmarketable equity securities | Real estate funds
Liabilities held for sale:
Investment securities valued at net asset value	29,308,000,000	30,142,000,000
Unfunded commitments	1,305,000,000	1,011,000,000
Fair Value, Measurements, Recurring | Nonmarketable equity securities | Private equity and other funds
Liabilities held for sale:
Investment securities valued at net asset value	51,458,000,000	39,462,000,000
Unfunded commitments	0	0
Fair Value, Measurements, Recurring | Nonmarketable equity securities | Level 1
Assets
Equity securities	0	0
Fair Value, Measurements, Recurring | Nonmarketable equity securities | Level 2
Assets
Equity securities	0	0
Fair Value, Measurements, Recurring | Nonmarketable equity securities | Level 3
Assets
Equity securities	74,761,000,000	55,883,000,000
Fair Value, Measurements, Recurring | Interest rate contracts
Assets
Trading derivative assets	7,445,535,000,000	5,444,683,000,000
Liabilities
Trading derivative liabilities	8,696,888,000,000	5,651,690,000,000
Fair Value, Measurements, Recurring | Interest rate contracts | Level 1
Assets
Trading derivative assets	40,013,000,000	121,584,000,000
Liabilities
Trading derivative liabilities	85,641,000,000	19,841,000,000
Fair Value, Measurements, Recurring | Interest rate contracts | Level 2
Assets
Trading derivative assets	7,311,689,000,000	5,268,790,000,000
Liabilities
Trading derivative liabilities	8,566,043,000,000	5,615,033,000,000
Fair Value, Measurements, Recurring | Interest rate contracts | Level 3
Assets
Trading derivative assets	93,833,000,000	54,309,000,000
Liabilities
Trading derivative liabilities	45,204,000,000	16,816,000,000
Fair Value, Measurements, Recurring | Foreign exchange contracts
Assets
Trading derivative assets	5,276,134,000,000	4,800,813,000,000
Liabilities
Trading derivative liabilities	5,017,957,000,000	4,907,168,000,000
Fair Value, Measurements, Recurring | Foreign exchange contracts | Level 1
Assets
Trading derivative assets	3,909,000,000	2,514,000,000
Liabilities
Trading derivative liabilities	1,679,000,000	4,017,000,000
Fair Value, Measurements, Recurring | Foreign exchange contracts | Level 2
Assets
Trading derivative assets	5,258,511,000,000	4,788,739,000,000
Liabilities
Trading derivative liabilities	5,013,909,000,000	4,901,054,000,000
Fair Value, Measurements, Recurring | Foreign exchange contracts | Level 3
Assets
Trading derivative assets	13,714,000,000	9,560,000,000
Liabilities
Trading derivative liabilities	2,369,000,000	2,097,000,000
Fair Value, Measurements, Recurring | Equity contracts
Assets
Trading derivative assets	89,760,000,000	150,948,000,000
Liabilities
Trading derivative liabilities	128,493,000,000	277,077,000,000
Fair Value, Measurements, Recurring | Equity contracts | Level 1
Assets
Trading derivative assets	40,484,000,000	77,762,000,000
Liabilities
Trading derivative liabilities	75,809,000,000	193,712,000,000
Fair Value, Measurements, Recurring | Equity contracts | Level 2
Assets
Trading derivative assets	28,617,000,000	47,207,000,000
Liabilities
Trading derivative liabilities	48,953,000,000	80,806,000,000
Fair Value, Measurements, Recurring | Equity contracts | Level 3
Assets
Trading derivative assets	20,659,000,000	25,979,000,000
Liabilities
Trading derivative liabilities	3,731,000,000	2,559,000,000
Fair Value, Measurements, Recurring | Commodity contracts
Assets
Trading derivative assets	9,925,000,000	22,072,000,000
Liabilities
Trading derivative liabilities	9,817,000,000	22,029,000,000
Fair Value, Measurements, Recurring | Commodity contracts | Level 1
Assets
Trading derivative assets	0	0
Liabilities
Trading derivative liabilities	0	0
Fair Value, Measurements, Recurring | Commodity contracts | Level 2
Assets
Trading derivative assets	17,000,000	88,000,000
Liabilities
Trading derivative liabilities	0	0
Fair Value, Measurements, Recurring | Commodity contracts | Level 3
Assets
Trading derivative assets	9,908,000,000	21,984,000,000
Liabilities
Trading derivative liabilities	9,817,000,000	22,029,000,000
Fair Value, Measurements, Recurring | Credit derivatives
Assets
Trading derivative assets	79,945,000,000	102,515,000,000
Liabilities
Trading derivative liabilities	90,149,000,000	100,885,000,000
Fair Value, Measurements, Recurring | Credit derivatives | Level 1
Assets
Trading derivative assets	0	0
Liabilities
Trading derivative liabilities	0	0
Fair Value, Measurements, Recurring | Credit derivatives | Level 2
Assets
Trading derivative assets	76,144,000,000	99,707,000,000
Liabilities
Trading derivative liabilities	90,087,000,000	100,806,000,000
Fair Value, Measurements, Recurring | Credit derivatives | Level 3
Assets
Trading derivative assets	3,801,000,000	2,808,000,000
Liabilities
Trading derivative liabilities	62,000,000	79,000,000
Fair Value, Measurements, Recurring | Other
Assets
Trading derivative assets	428,000,000	400,000,000
Liabilities
Trading derivative liabilities	64,000,000	371,000,000
Fair Value, Measurements, Recurring | Other | Level 1
Assets
Trading derivative assets	0	0
Liabilities
Trading derivative liabilities	0	0
Fair Value, Measurements, Recurring | Other | Level 2
Assets
Trading derivative assets	0	0
Liabilities
Trading derivative liabilities	0	0
Fair Value, Measurements, Recurring | Other | Level 3
Assets
Trading derivative assets	428,000,000	400,000,000
Liabilities
Trading derivative liabilities	¥ 64,000,000	¥ 371,000,000

Fair Value (Reconciliation of A

Fair Value (Reconciliation of Assets and Liabilities Measured at Fair Value on Recurring Basis Using Level 3 Inputs) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total gains (losses) for the period included in earnings, Liabilities	¥ 35,755
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Foreign exchange gains (losses)—net, Fees and commissions income (Note 27), Other non-interest income, Investment securities gains (losses)—net (Note 3), Trading account losses—net
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Foreign exchange gains (losses)—net, Fees and commissions income (Note 27), Other non-interest income, Investment securities gains (losses)—net (Note 3), Trading account losses—net
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration]	Net change during the fiscal year
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Trading account losses—net
Fair Value, Liability, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Trading account losses—net
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Liability, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration]	Net change during the fiscal year
Fair Value, Measurements, Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	¥ 1,219,735	¥ 1,135,409
Total gains (losses) for the period included in earnings, Assets	48,461	68,815
Total gains (losses) for the period included in other comprehensive income, Assets	27,082	32,308
Purchases, Assets	800,564	708,270
Issues, Assets	334	674
Sales, Assets	(101,481)	(204,970)
Settlements, Assets	(338,125)	(570,658)
Transfers into Level 3, Assets	61,952	136,272
Transfers out of Level 3, Assets	(33,495)	(85,037)
Level 3 assets, Ending balance	1,684,359	1,219,735
Change in unrealized gains (losses) included in earnings for assets still held at period end	92,168	105,473
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 liabilities, Beginning balance	16,463	(2,212)
Total gains (losses) for the period included in earnings, Liabilities		8,315
Total gains (losses) for the period included in other comprehensive income, Liabilities	(3,879)	(3,080)
Purchases, Liabilities	0	0
Issues, Liabilities	127,482	36,535
Sales, Liabilities	0	0
Settlements, Liabilities	(42,183)	(19,361)
Transfers into Level 3, Liabilities	72,173	5,364
Transfers out of Level 3, Liabilities	(192)	1,372
Level 3 liabilities, Ending balance	141,867	16,463
Change in unrealized gains (losses) included in earnings for liabilities still held at period end	43,066	15,532
Fair Value, Measurements, Recurring | Discontinued Operations, Held-for-sale
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	76,918	0
Total gains (losses) for the period included in earnings, Assets	992	(2,589)
Total gains (losses) for the period included in other comprehensive income, Assets	9,263	4,234
Purchases, Assets	1,620	770
Issues, Assets	0	0
Sales, Assets	(77,390)	0
Settlements, Assets	(11,403)	(4,247)
Transfers into Level 3, Assets	0	78,750
Transfers out of Level 3, Assets	0	0
Level 3 assets, Ending balance	0	76,918
Change in unrealized gains (losses) included in earnings for assets still held at period end	0	1,461
Fair Value, Measurements, Recurring | Other
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 liabilities, Beginning balance	16,463	(2,212)
Total gains (losses) for the period included in earnings, Liabilities	35,755	8,315
Total gains (losses) for the period included in other comprehensive income, Liabilities	(3,879)	(3,080)
Purchases, Liabilities	0	0
Issues, Liabilities	53,887	36,535
Sales, Liabilities	0	0
Settlements, Liabilities	(36,792)	(19,361)
Transfers into Level 3, Liabilities	72,173	5,364
Transfers out of Level 3, Liabilities	(192)	1,372
Level 3 liabilities, Ending balance	73,663	16,463
Change in unrealized gains (losses) included in earnings for liabilities still held at period end	43,066	15,532
Fair Value, Measurements, Recurring | Collateralized Debt Obligations
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 liabilities, Beginning balance	0
Total gains (losses) for the period included in earnings, Liabilities	0
Total gains (losses) for the period included in other comprehensive income, Liabilities	0
Purchases, Liabilities	0
Issues, Liabilities	73,595
Sales, Liabilities	0
Settlements, Liabilities	(5,391)
Transfers into Level 3, Liabilities	0
Transfers out of Level 3, Liabilities	0
Level 3 liabilities, Ending balance	68,204	0
Change in unrealized gains (losses) included in earnings for liabilities still held at period end	0
Fair Value, Measurements, Recurring | Trading account, Trading securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	797,997	756,413
Total gains (losses) for the period included in earnings, Assets	50,044	41,919
Total gains (losses) for the period included in other comprehensive income, Assets	0	0
Purchases, Assets	387,100	458,395
Issues, Assets	0	0
Sales, Assets	(21,409)	(197,245)
Settlements, Assets	(30,468)	(262,150)
Transfers into Level 3, Assets	0	665
Transfers out of Level 3, Assets	(945)	0
Level 3 assets, Ending balance	1,182,319	797,997
Change in unrealized gains (losses) included in earnings for assets still held at period end	43,990	40,113
Fair Value, Measurements, Recurring | Trading account, Debt securities | Foreign government and official institution bonds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	1,711	1,280
Total gains (losses) for the period included in earnings, Assets	16	287
Total gains (losses) for the period included in other comprehensive income, Assets	0	0
Purchases, Assets	5,718	31,591
Issues, Assets	0	0
Sales, Assets	(5,765)	(31,432)
Settlements, Assets	(250)	(15)
Transfers into Level 3, Assets	0	0
Transfers out of Level 3, Assets	(262)	0
Level 3 assets, Ending balance	1,168	1,711
Change in unrealized gains (losses) included in earnings for assets still held at period end	(35)	47
Fair Value, Measurements, Recurring | Trading account, Debt securities | Corporate bonds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	683	77
Total gains (losses) for the period included in earnings, Assets	0	(68)
Total gains (losses) for the period included in other comprehensive income, Assets	0	0
Purchases, Assets	0	126
Issues, Assets	0	0
Sales, Assets	0	(100)
Settlements, Assets	0	0
Transfers into Level 3, Assets	0	648
Transfers out of Level 3, Assets	(683)	0
Level 3 assets, Ending balance	0	683
Change in unrealized gains (losses) included in earnings for assets still held at period end	0	(69)
Fair Value, Measurements, Recurring | Trading account, Debt securities | Residential mortgage-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	0	1,000
Total gains (losses) for the period included in earnings, Assets		(2)
Total gains (losses) for the period included in other comprehensive income, Assets		0
Purchases, Assets		97,197
Issues, Assets		0
Sales, Assets		(98,176)
Settlements, Assets		(19)
Transfers into Level 3, Assets		0
Transfers out of Level 3, Assets		0
Level 3 assets, Ending balance		0
Change in unrealized gains (losses) included in earnings for assets still held at period end		0
Fair Value, Measurements, Recurring | Trading account, Debt securities | Asset-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	315,231	336,811
Total gains (losses) for the period included in earnings, Assets	17,132	26,692
Total gains (losses) for the period included in other comprehensive income, Assets	0	0
Purchases, Assets	354,978	270,974
Issues, Assets	0	0
Sales, Assets	(15,636)	(67,500)
Settlements, Assets	(2,794)	(251,746)
Transfers into Level 3, Assets	0	0
Transfers out of Level 3, Assets	0	0
Level 3 assets, Ending balance	668,911	315,231
Change in unrealized gains (losses) included in earnings for assets still held at period end	15,749	27,693
Fair Value, Measurements, Recurring | Trading account, Debt securities | Other debt securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	313,166	277,635
Total gains (losses) for the period included in earnings, Assets	21,297	14,179
Total gains (losses) for the period included in other comprehensive income, Assets	0	0
Purchases, Assets	8,128	21,352
Issues, Assets	0	0
Sales, Assets	0	0
Settlements, Assets	(8,467)	0
Transfers into Level 3, Assets	0	0
Transfers out of Level 3, Assets	0	0
Level 3 assets, Ending balance	334,124	313,166
Change in unrealized gains (losses) included in earnings for assets still held at period end	20,646	14,179
Fair Value, Measurements, Recurring | Trading account, equity securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	167,206	139,610
Total gains (losses) for the period included in earnings, Assets	11,599	831
Total gains (losses) for the period included in other comprehensive income, Assets	0	0
Purchases, Assets	18,276	37,155
Issues, Assets	0	0
Sales, Assets	(8)	(37)
Settlements, Assets	(18,957)	(10,370)
Transfers into Level 3, Assets	0	17
Transfers out of Level 3, Assets	0	0
Level 3 assets, Ending balance	178,116	167,206
Change in unrealized gains (losses) included in earnings for assets still held at period end	7,630	(1,737)
Fair Value, Measurements, Recurring | Trading derivatives—net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	71,089	25,027
Total gains (losses) for the period included in earnings, Assets	(2,045)	23,754
Total gains (losses) for the period included in other comprehensive income, Assets	1,138	1,882
Purchases, Assets	612	51
Issues, Assets	334	674
Sales, Assets	0	0
Settlements, Assets	(17,198)	(16,312)
Transfers into Level 3, Assets	55,211	41,076
Transfers out of Level 3, Assets	(27,377)	(3,715)
Level 3 assets, Ending balance	81,096	71,089
Change in unrealized gains (losses) included in earnings for assets still held at period end	45,862	46,149
Fair Value, Measurements, Recurring | Trading derivatives—net | Interest rate contracts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	37,493	14,179
Total gains (losses) for the period included in earnings, Assets	(27,947)	(25,977)
Total gains (losses) for the period included in other comprehensive income, Assets	297	824
Purchases, Assets	0	0
Issues, Assets	0	0
Sales, Assets	0	0
Settlements, Assets	10,932	9,696
Transfers into Level 3, Assets	55,243	39,609
Transfers out of Level 3, Assets	(27,389)	(838)
Level 3 assets, Ending balance	48,629	37,493
Change in unrealized gains (losses) included in earnings for assets still held at period end	10,779	4,410
Fair Value, Measurements, Recurring | Trading derivatives—net | Foreign exchange contracts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	7,463	7,283
Total gains (losses) for the period included in earnings, Assets	8,210	2,403
Total gains (losses) for the period included in other comprehensive income, Assets	86	206
Purchases, Assets	0	21
Issues, Assets	0	0
Sales, Assets	0	0
Settlements, Assets	(4,484)	1,833
Transfers into Level 3, Assets	(32)	1,467
Transfers out of Level 3, Assets	102	(5,750)
Level 3 assets, Ending balance	11,345	7,463
Change in unrealized gains (losses) included in earnings for assets still held at period end	7,877	(1,640)
Fair Value, Measurements, Recurring | Trading derivatives—net | Equity contracts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	23,420	623
Total gains (losses) for the period included in earnings, Assets	16,190	46,579
Total gains (losses) for the period included in other comprehensive income, Assets	758	858
Purchases, Assets	19	30
Issues, Assets	0	0
Sales, Assets	0	0
Settlements, Assets	(23,369)	(27,543)
Transfers into Level 3, Assets	0	0
Transfers out of Level 3, Assets	(90)	2,873
Level 3 assets, Ending balance	16,928	23,420
Change in unrealized gains (losses) included in earnings for assets still held at period end	25,646	42,546
Fair Value, Measurements, Recurring | Trading derivatives—net | Commodity contracts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	(45)	(63)
Total gains (losses) for the period included in earnings, Assets	153	30
Total gains (losses) for the period included in other comprehensive income, Assets	(3)	(6)
Purchases, Assets	0	0
Issues, Assets	0	0
Sales, Assets	0	0
Settlements, Assets	(14)	(6)
Transfers into Level 3, Assets	0	0
Transfers out of Level 3, Assets	0	0
Level 3 assets, Ending balance	91	(45)
Change in unrealized gains (losses) included in earnings for assets still held at period end	153	30
Fair Value, Measurements, Recurring | Trading derivatives—net | Credit derivatives
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	2,729	2,271
Total gains (losses) for the period included in earnings, Assets	1,273	750
Total gains (losses) for the period included in other comprehensive income, Assets	0	0
Purchases, Assets	0	0
Issues, Assets	0	0
Sales, Assets	0	0
Settlements, Assets	(263)	(292)
Transfers into Level 3, Assets	0	0
Transfers out of Level 3, Assets	0	0
Level 3 assets, Ending balance	3,739	2,729
Change in unrealized gains (losses) included in earnings for assets still held at period end	1,303	819
Fair Value, Measurements, Recurring | Trading derivatives—net | Other
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	29	734
Total gains (losses) for the period included in earnings, Assets	76	(31)
Total gains (losses) for the period included in other comprehensive income, Assets	0	0
Purchases, Assets	593	0
Issues, Assets	334	674
Sales, Assets	0	0
Settlements, Assets	0	0
Transfers into Level 3, Assets	0	0
Transfers out of Level 3, Assets	0	0
Level 3 assets, Ending balance	364	29
Change in unrealized gains (losses) included in earnings for assets still held at period end	104	(16)
Fair Value, Measurements, Recurring | Available-for-sale debt securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	212,936	289,616
Total gains (losses) for the period included in earnings, Assets	(1,303)	277
Total gains (losses) for the period included in other comprehensive income, Assets	16,357	25,143
Purchases, Assets	301,283	236,786
Issues, Assets	0	0
Sales, Assets	0	0
Settlements, Assets	(272,638)	(287,747)
Transfers into Level 3, Assets	1,405	15,651
Transfers out of Level 3, Assets	(4,108)	(66,790)
Level 3 assets, Ending balance	253,932	212,936
Change in unrealized gains (losses) included in earnings for assets still held at period end	2,094	12,545
Fair Value, Measurements, Recurring | Available-for-sale debt securities | Discontinued Operations, Held-for-sale
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	65,262	0
Total gains (losses) for the period included in earnings, Assets	(3,619)	(963)
Total gains (losses) for the period included in other comprehensive income, Assets	7,156	3,791
Purchases, Assets	297	1
Issues, Assets	0	0
Sales, Assets	(56,292)	0
Settlements, Assets	(12,804)	(4,247)
Transfers into Level 3, Assets	0	66,680
Transfers out of Level 3, Assets	0	0
Level 3 assets, Ending balance	0	65,262
Change in unrealized gains (losses) included in earnings for assets still held at period end	0	5,737
Fair Value, Measurements, Recurring | Available-for-sale debt securities | Foreign government and official institution bonds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	11,890	16,718
Total gains (losses) for the period included in earnings, Assets	0	0
Total gains (losses) for the period included in other comprehensive income, Assets	(925)	607
Purchases, Assets	128	5,163
Issues, Assets	0	0
Sales, Assets	0	0
Settlements, Assets	(11,093)	(5,964)
Transfers into Level 3, Assets	0	0
Transfers out of Level 3, Assets	0	(4,634)
Level 3 assets, Ending balance	0	11,890
Change in unrealized gains (losses) included in earnings for assets still held at period end	0	87
Fair Value, Measurements, Recurring | Available-for-sale debt securities | Corporate bonds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	3,089	162
Total gains (losses) for the period included in earnings, Assets	(164)	(328)
Total gains (losses) for the period included in other comprehensive income, Assets	142	68
Purchases, Assets	1,823	557
Issues, Assets	0	0
Sales, Assets	0	0
Settlements, Assets	(67)	(114)
Transfers into Level 3, Assets	1,255	2,854
Transfers out of Level 3, Assets	(4,108)	(110)
Level 3 assets, Ending balance	1,970	3,089
Change in unrealized gains (losses) included in earnings for assets still held at period end	147	(265)
Fair Value, Measurements, Recurring | Available-for-sale debt securities | Residential mortgage-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	15	15
Total gains (losses) for the period included in earnings, Assets	0	0
Total gains (losses) for the period included in other comprehensive income, Assets	0	0
Purchases, Assets	0	0
Issues, Assets	0	0
Sales, Assets	0	0
Settlements, Assets	0	0
Transfers into Level 3, Assets	0	0
Transfers out of Level 3, Assets	0	0
Level 3 assets, Ending balance	15	15
Change in unrealized gains (losses) included in earnings for assets still held at period end	0	0
Fair Value, Measurements, Recurring | Available-for-sale debt securities | Commercial mortgage-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	0	1,599
Total gains (losses) for the period included in earnings, Assets		0
Total gains (losses) for the period included in other comprehensive income, Assets		104
Purchases, Assets		0
Issues, Assets		0
Sales, Assets		0
Settlements, Assets		(524)
Transfers into Level 3, Assets		0
Transfers out of Level 3, Assets		(1,179)
Level 3 assets, Ending balance		0
Change in unrealized gains (losses) included in earnings for assets still held at period end		0
Fair Value, Measurements, Recurring | Available-for-sale debt securities | Asset-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	124,379	136,920
Total gains (losses) for the period included in earnings, Assets	(1,174)	580
Total gains (losses) for the period included in other comprehensive income, Assets	14,406	14,066
Purchases, Assets	296,645	231,039
Issues, Assets	0	0
Sales, Assets	0	0
Settlements, Assets	(251,318)	(258,226)
Transfers into Level 3, Assets	0	0
Transfers out of Level 3, Assets	0	0
Level 3 assets, Ending balance	182,938	124,379
Change in unrealized gains (losses) included in earnings for assets still held at period end	(823)	6,651
Fair Value, Measurements, Recurring | Available-for-sale debt securities | Other debt securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	73,563	134,202
Total gains (losses) for the period included in earnings, Assets	35	25
Total gains (losses) for the period included in other comprehensive income, Assets	2,734	10,298
Purchases, Assets	2,687	27
Issues, Assets	0	0
Sales, Assets	0	0
Settlements, Assets	(10,160)	(22,919)
Transfers into Level 3, Assets	150	12,797
Transfers out of Level 3, Assets	0	(60,867)
Level 3 assets, Ending balance	69,009	73,563
Change in unrealized gains (losses) included in earnings for assets still held at period end	2,770	6,072
Fair Value, Measurements, Recurring | Equity securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	55,883	45,569
Total gains (losses) for the period included in earnings, Assets	712	5,856
Total gains (losses) for the period included in other comprehensive income, Assets	345	0
Purchases, Assets	18,963	9,899
Issues, Assets	0	0
Sales, Assets	(2,682)	(3,113)
Settlements, Assets	(806)	0
Transfers into Level 3, Assets	3,411	130
Transfers out of Level 3, Assets	(1,065)	(2,458)
Level 3 assets, Ending balance	74,761	55,883
Change in unrealized gains (losses) included in earnings for assets still held at period end	161	3,960
Fair Value, Measurements, Recurring | Equity securities | Nonmarketable equity securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	55,883	45,569
Total gains (losses) for the period included in earnings, Assets	712	5,856
Total gains (losses) for the period included in other comprehensive income, Assets	345	0
Purchases, Assets	18,963	9,899
Issues, Assets	0	0
Sales, Assets	(2,682)	(3,113)
Settlements, Assets	(806)	0
Transfers into Level 3, Assets	3,411	130
Transfers out of Level 3, Assets	(1,065)	(2,458)
Level 3 assets, Ending balance	74,761	55,883
Change in unrealized gains (losses) included in earnings for assets still held at period end	161	3,960
Fair Value, Measurements, Recurring | Other
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	4,912	18,784
Total gains (losses) for the period included in earnings, Assets	61	(402)
Total gains (losses) for the period included in other comprehensive income, Assets	(21)	1,049
Purchases, Assets	90,986	2,369
Issues, Assets	0	0
Sales, Assets	0	(4,612)
Settlements, Assets	(5,612)	(202)
Transfers into Level 3, Assets	1,925	0
Transfers out of Level 3, Assets	0	(12,074)
Level 3 assets, Ending balance	92,251	4,912
Change in unrealized gains (losses) included in earnings for assets still held at period end	61	1,245
Fair Value, Measurements, Recurring | Other | Discontinued Operations, Held-for-sale
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, Beginning balance	11,656	0
Total gains (losses) for the period included in earnings, Assets	4,611	(1,626)
Total gains (losses) for the period included in other comprehensive income, Assets	2,107	443
Purchases, Assets	1,323	769
Issues, Assets	0	0
Sales, Assets	(21,098)	0
Settlements, Assets	1,401	0
Transfers into Level 3, Assets	0	12,070
Transfers out of Level 3, Assets	0	0
Level 3 assets, Ending balance	0	11,656
Change in unrealized gains (losses) included in earnings for assets still held at period end	¥ 0	¥ (4,276)

Fair Value (Quantitative Inform

Fair Value (Quantitative Information about Level 3 Fair Value Measurements) (Detail) - Fair Value, Measurements, Recurring - Level 3 ¥ in Millions	Mar. 31, 2023 JPY (¥) years	Mar. 31, 2022 JPY (¥) years
Interest rate contracts | Option model
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Fair value	¥ 48,209	¥ (35,195)
Interest rate contracts | Option model | Correlation between interest rates | Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.300	0.300
Interest rate contracts | Option model | Correlation between interest rates | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.606	0.629
Interest rate contracts | Option model | Correlation between interest rates | Median
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.444	0.456
Interest rate contracts | Option model | Correlation between interest rate and foreign exchange rate | Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.020	0.153
Interest rate contracts | Option model | Correlation between interest rate and foreign exchange rate | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.600	0.600
Interest rate contracts | Option model | Correlation between interest rate and foreign exchange rate | Median
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.366	0.410
Interest rate contracts | Option model | Volatility | Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.703	0
Interest rate contracts | Option model | Volatility | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	1.067	1
Interest rate contracts | Option model | Volatility | Median
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.801	0.619
Foreign exchange contracts | Option model
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Fair value	¥ 11,345	¥ 7,463
Foreign exchange contracts | Option model | Correlation between interest rates | Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.300	0.100
Foreign exchange contracts | Option model | Correlation between interest rates | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.700	0.700
Foreign exchange contracts | Option model | Correlation between interest rates | Median
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.506	0.515
Foreign exchange contracts | Option model | Correlation between interest rate and foreign exchange rate | Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.143	0
Foreign exchange contracts | Option model | Correlation between interest rate and foreign exchange rate | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.600	0.600
Foreign exchange contracts | Option model | Correlation between interest rate and foreign exchange rate | Median
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.368	0.374
Foreign exchange contracts | Option model | Volatility | Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.106	0.090
Foreign exchange contracts | Option model | Volatility | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.230	0.217
Foreign exchange contracts | Option model | Volatility | Median
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.156	0.133
Foreign exchange contracts | Option model | Correlation between foreign exchange rates | Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.500	0.500
Foreign exchange contracts | Option model | Correlation between foreign exchange rates | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.706	0.706
Foreign exchange contracts | Option model | Correlation between foreign exchange rates | Median
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.664	0.664
Equity contracts | Discounted cash flow
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Fair value	¥ 13,612	¥ 22,648
Equity contracts | Discounted cash flow | Term of litigation
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs | years		1.8
Equity contracts | Discounted cash flow | Term of litigation | Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs | years	0.1
Equity contracts | Discounted cash flow | Term of litigation | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs | years	1
Equity contracts | Discounted cash flow | Term of litigation | Median
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs | years	0.5	1.8
Equity contracts | Option model
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Fair value	¥ 3,316	¥ (772)
Equity contracts | Option model | Volatility | Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.280	0.260
Equity contracts | Option model | Volatility | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.370	0.380
Equity contracts | Option model | Volatility | Median
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.322	0.318
Equity contracts | Option model | Correlation between foreign exchange rate and equity | Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	(0.584)	(0.584)
Equity contracts | Option model | Correlation between foreign exchange rate and equity | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.550	0.550
Equity contracts | Option model | Correlation between foreign exchange rate and equity | Median
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.150	0.231
Equity contracts | Option model | Correlation between equities | Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.056	0.024
Equity contracts | Option model | Correlation between equities | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.950	0.950
Equity contracts | Option model | Correlation between equities | Median
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading derivatives—net, Significant unobservable inputs	0.541	0.514
Foreign government and official institution bonds | Return on equity method
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Fair value		¥ 17,297
Foreign government and official institution bonds | Return on equity method | Probability of default | Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs		0.002
Foreign government and official institution bonds | Return on equity method | Probability of default | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs		0.018
Foreign government and official institution bonds | Return on equity method | Probability of default | Weighted average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs		0.005
Foreign government and official institution bonds | Return on equity method | Recovery rate | Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs		0.350
Foreign government and official institution bonds | Return on equity method | Recovery rate | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs		0.700
Foreign government and official institution bonds | Return on equity method | Recovery rate | Weighted average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs		0.644
Foreign government and official institution bonds | Return on equity method | Market-required return on capital | Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs		0.100
Foreign government and official institution bonds | Return on equity method | Market-required return on capital | Weighted average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs		0.100
Residential mortgage-backed securities, Commercial mortgage-backed securities and Asset-backed securities | Discounted cash flow
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Fair value	¥ 101,014	¥ 98,325
Residential mortgage-backed securities, Commercial mortgage-backed securities and Asset-backed securities | Discounted cash flow | Probability of default | Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs		1
Residential mortgage-backed securities, Commercial mortgage-backed securities and Asset-backed securities | Discounted cash flow | Probability of default | Weighted average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs		1
Residential mortgage-backed securities, Commercial mortgage-backed securities and Asset-backed securities | Discounted cash flow | Recovery rate | Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs	1
Residential mortgage-backed securities, Commercial mortgage-backed securities and Asset-backed securities | Discounted cash flow | Recovery rate | Weighted average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs	1
Residential mortgage-backed securities, Commercial mortgage-backed securities and Asset-backed securities | Internal model
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Fair value	¥ 591,515	¥ 238,864
Residential mortgage-backed securities, Commercial mortgage-backed securities and Asset-backed securities | Internal model | Probability of default | Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs	0	0
Residential mortgage-backed securities, Commercial mortgage-backed securities and Asset-backed securities | Internal model | Probability of default | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs	0.990	0.854
Residential mortgage-backed securities, Commercial mortgage-backed securities and Asset-backed securities | Internal model | Probability of default | Weighted average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs	0	0
Residential mortgage-backed securities, Commercial mortgage-backed securities and Asset-backed securities | Internal model | Recovery rate
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs	0.722	0.699
Residential mortgage-backed securities, Commercial mortgage-backed securities and Asset-backed securities | Internal model | Recovery rate | Weighted average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs	0.722	0.699
Residential mortgage-backed securities, Commercial mortgage-backed securities and Asset-backed securities | Internal model | Asset correlations
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs	0.030	0.030
Residential mortgage-backed securities, Commercial mortgage-backed securities and Asset-backed securities | Internal model | Asset correlations | Weighted average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs	0.030	0.030
Residential mortgage-backed securities, Commercial mortgage-backed securities and Asset-backed securities | Internal model | Discount factor | Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs	0.020	0.006
Residential mortgage-backed securities, Commercial mortgage-backed securities and Asset-backed securities | Internal model | Discount factor | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs	0.023	0.010
Residential mortgage-backed securities, Commercial mortgage-backed securities and Asset-backed securities | Internal model | Discount factor | Weighted average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs	0.020	0.009
Residential mortgage-backed securities, Commercial mortgage-backed securities and Asset-backed securities | Internal model | Prepayment rate
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs	0.131	0.290
Residential mortgage-backed securities, Commercial mortgage-backed securities and Asset-backed securities | Internal model | Prepayment rate | Weighted average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs	0.131	0.290
Other debt securities | Discounted cash flow
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Fair value	¥ 385,046	¥ 369,445
Other debt securities | Discounted cash flow | Liquidity premium | Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs	0.009	0.009
Other debt securities | Discounted cash flow | Liquidity premium | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs	0.032	0.032
Other debt securities | Discounted cash flow | Liquidity premium | Weighted average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs	0.028	0.028
Other debt securities | Return on equity method
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Fair value		¥ 58,677
Other debt securities | Return on equity method | Probability of default | Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs		0.001
Other debt securities | Return on equity method | Probability of default | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs		0.080
Other debt securities | Return on equity method | Probability of default | Weighted average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs		0.004
Other debt securities | Return on equity method | Recovery rate | Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs		0.600
Other debt securities | Return on equity method | Recovery rate | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs		0.900
Other debt securities | Return on equity method | Recovery rate | Weighted average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs		0.827
Other debt securities | Return on equity method | Market-required return on capital | Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs		0.080
Other debt securities | Return on equity method | Market-required return on capital | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs		0.100
Other debt securities | Return on equity method | Market-required return on capital | Weighted average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Trading securities and Investment securities, Significant unobservable inputs		0.099

Fair Value (Carrying Value of A

Fair Value (Carrying Value of Assets Measured at Fair Value on Nonrecurring Basis by Level) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Goodwill	¥ 296,772	¥ 303,611	¥ 370,852
Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Investment securities	26,637	20,997
Loans	616,360	241,950
Loans held for sale	439,361	42,994
Collateral dependent loans	176,999	198,956
Premises and equipment	11,835	17,301
Intangible assets	309	359
Goodwill	184,364	0
Other assets	207,595	29,162
Investments in equity method investees	191,064	12,915
Other	16,531	16,247
Total	1,047,100	564,771
Fair Value, Measurements, Nonrecurring | Disposal group, disposed of by sale, not discontinued operations
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Loans held for sale	0	255,002
Assets held for sale	0	255,002
Fair Value, Measurements, Nonrecurring | Private equity funds
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Investment securities valued at net asset value	33,595	26,644
Unfunded commitments related to investment securities valued at net asset value	23,029	22,197
Fair Value, Measurements, Nonrecurring | Level 1
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Investment securities	0	0
Loans	1,917	2,175
Loans held for sale	0	0
Collateral dependent loans	1,917	2,175
Premises and equipment	0	0
Intangible assets	0	0
Goodwill	0	0
Other assets	178,592	11,880
Investments in equity method investees	178,592	11,880
Other	0	0
Total	180,509	14,055
Fair Value, Measurements, Nonrecurring | Level 1 | Disposal group, disposed of by sale, not discontinued operations
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Loans held for sale	0	0
Assets held for sale	0	0
Fair Value, Measurements, Nonrecurring | Level 2
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Investment securities	13,366	9,839
Loans	3,388	3,153
Loans held for sale	0	0
Collateral dependent loans	3,388	3,153
Premises and equipment	0	0
Intangible assets	0	0
Goodwill	0	0
Other assets	0	0
Investments in equity method investees	0	0
Other	0	0
Total	16,754	12,992
Fair Value, Measurements, Nonrecurring | Level 2 | Disposal group, disposed of by sale, not discontinued operations
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Loans held for sale	0	0
Assets held for sale	0	0
Fair Value, Measurements, Nonrecurring | Level 3
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Investment securities	13,271	11,158
Loans	611,055	236,622
Loans held for sale	439,361	42,994
Collateral dependent loans	171,694	193,628
Premises and equipment	11,835	17,301
Intangible assets	309	359
Goodwill	184,364	0
Other assets	29,003	17,282
Investments in equity method investees	12,472	1,035
Other	16,531	16,247
Total	849,837	537,724
Fair Value, Measurements, Nonrecurring | Level 3 | Disposal group, disposed of by sale, not discontinued operations
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Loans held for sale	0	255,002
Assets held for sale	¥ 0	255,002
Fair Value, Measurements, Nonrecurring | Level 3 | Disposal group, disposed of by sale, not discontinued operations | MUFG Union Bank
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Fair Value, Net Asset (Liability)		¥ 1,992,632

Fair Value (Losses (Gains) Reco

Fair Value (Losses (Gains) Recorded as a Result of Changes in Fair Value Measured on a Nonrecurring Basis) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Losses (gains) on change in fair value	¥ 476,368	¥ 78,416
Disposal group, disposed of by sale, not discontinued operations
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Losses (gains) on change in fair value	282,540	3,165
Disposal group, disposed of by sale, not discontinued operations | MUFG Union Bank
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Impairment of assets held for sale		134,141
Investment securities
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Losses (gains) on change in fair value	3,580	1,232
Loans
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Losses (gains) on change in fair value	73,282	30,638
Loans | Loans held for sale
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Losses (gains) on change in fair value	32,146	1,893
Loans | Loans held for sale | Disposal group, disposed of by sale, not discontinued operations
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Losses (gains) on change in fair value	282,540	3,165
Loans | Collateral dependent loans
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Losses (gains) on change in fair value	41,136	28,745
Premises and equipment
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Losses (gains) on change in fair value	5,293	5,701
Intangible assets
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Losses (gains) on change in fair value	3,650	10,412
Goodwill
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Losses (gains) on change in fair value	33,553	0
Other assets
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Losses (gains) on change in fair value	74,470	27,268
Other assets | Investments in equity method investees
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Losses (gains) on change in fair value	58,061	6,949
Loans held for sale
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Losses (gains) on change in fair value	¥ 16,409	¥ 20,319

Fair Value (Gains (Losses) Rela

Fair Value (Gains (Losses) Related to Instruments for which Fair Value Option was Elected) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Financial liabilities:
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	¥ 37,318	¥ 55,634	¥ (4,961)
Financial liabilities: | Trading account profits (losses)
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	37,318	55,634	(4,961)
Financial liabilities: | Foreign exchange gains (losses)
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	0	0
Financial liabilities: | Other short-term borrowings
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	(3,626)	5,552	(6,484)
Financial liabilities: | Other short-term borrowings | Trading account profits (losses)
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	(3,626)	5,552	(6,484)
Financial liabilities: | Other short-term borrowings | Foreign exchange gains (losses)
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	0	0
Financial liabilities: | Long-term debt
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	40,944	50,082	1,523
Financial liabilities: | Long-term debt | Trading account profits (losses)
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	40,944	50,082	1,523
Financial liabilities: | Long-term debt | Foreign exchange gains (losses)
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	0	0
Financial assets:
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	188,760	768,390	353,267
Financial assets: | Trading account profits (losses)
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	(1,180,311)	(984,605)	(370,238)
Financial assets: | Foreign exchange gains (losses)
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	1,369,071	1,752,995	723,505
Financial assets: | Trading account securities
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	188,760	768,390	353,267
Financial assets: | Trading account securities | Trading account profits (losses)
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	(1,180,311)	(984,605)	(370,238)
Financial assets: | Trading account securities | Foreign exchange gains (losses)
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	¥ 1,369,071	¥ 1,752,995	¥ 723,505

Fair Value (Differences between

Fair Value (Differences between Aggregate Fair Value and Aggregate Remaining Contractual Principal Balance Outstanding) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
Fair Value, Option, Quantitative Disclosures [Line Items]
Remaining aggregate contractual amounts outstanding, Financial liabilities	¥ 501,982	¥ 511,851
Fair value	431,338	483,051
Fair value over (under) remaining aggregate contractual amounts outstanding, Financial liabilities	(70,644)	(28,800)
Long-term debt
Fair Value, Option, Quantitative Disclosures [Line Items]
Remaining aggregate contractual amounts outstanding, Financial liabilities	501,982	511,851
Fair value	431,338	483,051
Fair value over (under) remaining aggregate contractual amounts outstanding, Financial liabilities	¥ (70,644)	¥ (28,800)

Fair Value (Summary of Carrying

Fair Value (Summary of Carrying Amounts and Estimated Fair Values of Financial Instruments Not Carried at Fair Value on Recurring Basis on Balance Sheets by Level) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
Financial liabilities:
Carrying amounts of investments in equity method investees	¥ 3,482,292	¥ 3,066,738
Carrying amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	60,051,000	50,972,000
Interest-earning deposits in other banks	53,990,000	58,848,000
Call loans and funds sold	1,802,000	1,316,000
Receivables under resale agreements	14,059,000	12,503,000
Receivables under securities borrowing transactions	4,556,000	4,496,000
Investment securities	21,520,000	4,595,000
Loans, net of allowance for credit losses	118,679,000	111,669,000
Other financial assets	10,108,000	9,207,000
Financial liabilities:
Non-interest-bearing	37,804,000	36,496,000
Interest-bearing	197,500,000	188,112,000
Total deposits	235,304,000	224,608,000
Call money and funds purchased	3,438,000	2,416,000
Payables under repurchase agreements	40,132,000	27,726,000
Payables under securities lending transactions	1,138,000	1,022,000
Due to trust account and other short-term borrowings	14,260,000	22,728,000
Long-term debt	38,704,000	34,245,000
Other financial liabilities	9,595,000	7,560,000
Carrying amounts of investments in equity method investees	3,482,000	3,067,000
Estimated fair value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	60,051,000	50,972,000
Interest-earning deposits in other banks	53,990,000	58,848,000
Call loans and funds sold	1,802,000	1,316,000
Receivables under resale agreements	14,059,000	12,503,000
Receivables under securities borrowing transactions	4,556,000	4,496,000
Investment securities	21,386,000	4,606,000
Loans, net of allowance for credit losses	118,933,000	112,391,000
Other financial assets	10,108,000	9,207,000
Financial liabilities:
Non-interest-bearing	37,804,000	36,496,000
Interest-bearing	197,573,000	188,080,000
Total deposits	235,377,000	224,576,000
Call money and funds purchased	3,438,000	2,416,000
Payables under repurchase agreements	40,132,000	27,726,000
Payables under securities lending transactions	1,138,000	1,022,000
Due to trust account and other short-term borrowings	14,260,000	22,728,000
Long-term debt	37,928,000	33,974,000
Other financial liabilities	9,595,000	7,560,000
Estimated fair value | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	60,051,000	50,972,000
Interest-earning deposits in other banks	0	0
Call loans and funds sold	0	0
Receivables under resale agreements	0	0
Receivables under securities borrowing transactions	0	0
Investment securities	13,527,000	1,758,000
Loans, net of allowance for credit losses	2,000	2,000
Other financial assets	0	0
Financial liabilities:
Non-interest-bearing	0	0
Interest-bearing	0	0
Total deposits	0	0
Call money and funds purchased	0	0
Payables under repurchase agreements	0	0
Payables under securities lending transactions	0	0
Due to trust account and other short-term borrowings	0	0
Long-term debt	0	0
Other financial liabilities	0	0
Estimated fair value | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	0	0
Interest-earning deposits in other banks	53,990,000	58,848,000
Call loans and funds sold	1,802,000	1,316,000
Receivables under resale agreements	14,059,000	12,503,000
Receivables under securities borrowing transactions	4,556,000	4,496,000
Investment securities	5,354,000	460,000
Loans, net of allowance for credit losses	263,000	245,000
Other financial assets	10,108,000	9,207,000
Financial liabilities:
Non-interest-bearing	37,804,000	36,496,000
Interest-bearing	197,573,000	188,080,000
Total deposits	235,377,000	224,576,000
Call money and funds purchased	3,438,000	2,416,000
Payables under repurchase agreements	40,132,000	27,726,000
Payables under securities lending transactions	1,138,000	1,022,000
Due to trust account and other short-term borrowings	14,260,000	22,728,000
Long-term debt	37,928,000	33,974,000
Other financial liabilities	9,595,000	7,560,000
Estimated fair value | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	0	0
Interest-earning deposits in other banks	0	0
Call loans and funds sold	0	0
Receivables under resale agreements	0	0
Receivables under securities borrowing transactions	0	0
Investment securities	2,505,000	2,388,000
Loans, net of allowance for credit losses	118,668,000	112,144,000
Other financial assets	0	0
Financial liabilities:
Non-interest-bearing	0	0
Interest-bearing	0	0
Total deposits	0	0
Call money and funds purchased	0	0
Payables under repurchase agreements	0	0
Payables under securities lending transactions	0	0
Due to trust account and other short-term borrowings	0	0
Long-term debt	0	0
Other financial liabilities	¥ 0	¥ 0

Parent Company Only Financial_3

Parent Company Only Financial Information (Narrative) (Detail) - BK and TB - JPY (¥) ¥ in Billions	Mar. 31, 2023	Mar. 31, 2022
Companies Act
Parent Company Only Financial Information [Line Items]
Unrestricted amount of retained earnings that are in excess of the level required under the statutory reserve requirements	¥ 5,837	¥ 5,094
Banking Law and Related Regulations
Parent Company Only Financial Information [Line Items]
Percentage limitation of loans or credits to the parent company over the banking subsidiary's consolidated total capital	15%
Restricted amount of net assets of consolidated subsidiaries as to payment of cash dividends and loans to the parent company	¥ 5,352	¥ 5,662

Parent Company Only Financial_4

Parent Company Only Financial Information (Condensed Balance Sheets) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Assets:
Total assets	¥ 381,735,733	¥ 367,650,018	¥ 353,824,625
Liabilities and Shareholders’ equity:
Total liabilities	365,269,566	351,353,496
Total shareholders’ equity	15,763,346	15,605,068
Total liabilities and equity	381,735,733	367,650,018
MUFG:
Assets:
Cash and interest-earning deposits with banking subsidiaries	173,603	231,389
Investments in subsidiaries and affiliated companies	16,834,133	16,504,756
Banking subsidiaries	11,893,171	11,731,745
Non-banking subsidiaries and affiliated companies	4,940,962	4,773,011
Loans to subsidiaries	12,841,655	10,062,030
Loans to subsidiaries, Banking subsidiaries	12,225,477	9,516,847
Loans to subsidiaries, Non-banking subsidiaries	616,178	545,183
Other assets	229,005	266,773
Total assets	30,078,396	27,064,948
Liabilities and Shareholders’ equity:
Short-term borrowings from banking subsidiaries	1,291,660	1,146,147
Long-term debt from non-banking subsidiaries and affiliated companies	15,591	24,535
Long-term debt	12,792,670	10,055,876
Other liabilities	215,129	233,322
Total liabilities	14,315,050	11,459,880
Total shareholders’ equity	15,763,346	15,605,068
Total liabilities and equity	¥ 30,078,396	¥ 27,064,948

Parent Company Only Financial_5

Parent Company Only Financial Information (Condensed Statements of Income) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Income:
Foreign exchange gains (losses)—net	¥ 25,232	¥ 106,868	¥ 99,337
Trading account losses—net	(792,098)	(824,420)	(410,368)
Expense:
Operating expenses	2,938,200	2,816,000	2,757,600
Income (loss) before income tax expense (benefit)	656,734	(58,727)	1,608,342
Income tax expense (benefit)	26,413	(14,511)	444,948
Net income (loss) attributable to Mitsubishi UFJ Financial Group	599,908	(83,320)	1,117,298
MUFG:
Income:
Dividends from subsidiaries and affiliated companies	605,115	586,108	404,064
Banking subsidiaries	407,630	419,691	317,453
Non-banking subsidiaries and affiliated companies	197,485	166,417	86,611
Management fees from subsidiaries	35,052	34,957	35,095
Interest income from subsidiaries	273,536	183,679	174,816
Foreign exchange gains (losses)—net	3,465	6,851	1,089
Trading account losses—net	28,970	(4,059)	(18,285)
Gains on sales of investment in subsidiaries and affiliated companies—net	17,748	0	95
Other income	13,255	11,732	12,552
Total income	977,141	819,268	609,426
Expense:
Operating expenses	44,149	40,158	37,567
Interest expense to subsidiaries and affiliated companies	15,442	12,256	11,415
Interest expense	256,333	167,057	159,057
Other expense	6,496	7,154	8,164
Total expense	322,420	226,625	216,203
Equity in undistributed net income (loss) of subsidiaries and affiliated companies—net	(35,857)	(667,088)	727,257
Income (loss) before income tax expense (benefit)	618,864	(74,445)	1,120,480
Income tax expense (benefit)	18,956	8,875	3,182
Net income (loss) attributable to Mitsubishi UFJ Financial Group	¥ 599,908	¥ (83,320)	¥ 1,117,298

Parent Company Only Financial_6

Parent Company Only Financial Information (Condensed Statements of Cash Flows) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net income (loss)	¥ 599,908	¥ (83,320)	¥ 1,117,298
Net cash provided by (used in) operating activities	2,106,136	909,355	(245,067)
Cash flows from investing activities:
Other—net	(34,917)	(16,608)	(14,802)
Net cash provided by (used in) investing activities	(12,213,619)	236,835	3,657,359
Cash flows from financing activities:
Proceeds from issuance of long-term debt	7,529,772	4,659,212	18,707,004
Repayment of long-term debt	(4,168,619)	(5,466,007)	(11,360,120)
Proceeds from sales of treasury stock	1,212	2,688	899
Payments for acquisition of treasury stock	(450,376)	(158,529)	(20)
Other—net	55,059	(385,778)	(22,566)
Net cash provided by financing activities	11,976,277	5,385,042	20,963,620
Net increase in cash and cash equivalents	2,932,546	7,782,754	24,773,199
Cash and cash equivalents at beginning of fiscal year	111,111,544	103,328,790	78,555,591
Cash and cash equivalents at end of fiscal year	114,044,090	111,111,544	103,328,790
MUFG:
Cash flows from operating activities:
Net income (loss)	599,908	(83,320)	1,117,298
Adjustments and other	9,733	653,768	(568,317)
Net cash provided by (used in) operating activities	609,641	570,448	548,981
Cash flows from investing activities:
Proceeds from sales of investment in subsidiaries and affiliated companies	41,125	136	35,081
Purchase of equity investment in subsidiaries and an affiliated company	0	(1,000)	0
Net increase in loans to subsidiaries	(2,204,831)	(257,619)	(462,208)
Other—net	(7,791)	(9,413)	(11,531)
Net cash provided by (used in) investing activities	(2,171,497)	(267,896)	(438,658)
Cash flows from financing activities:
Net increase (decrease) in short-term borrowings from subsidiaries	145,513	(61,415)	(49,058)
Proceeds from issuance of long-term debt	3,833,878	1,625,173	831,121
Repayment of long-term debt	(1,630,695)	(1,369,254)	(514,436)
Repayment of long-term debt to affiliated companies	0	0	(10,500)
Proceeds from sales of treasury stock	0	0	1
Payments for acquisition of treasury stock	(450,019)	(150,017)	(13)
Dividends paid	(380,447)	(334,620)	(321,772)
Other—net	(14,160)	(10,410)	(1,954)
Net cash provided by financing activities	1,504,070	(300,543)	(66,611)
Net increase in cash and cash equivalents	(57,786)	2,009	43,712
Cash and cash equivalents at beginning of fiscal year	231,389	229,380	185,668
Cash and cash equivalents at end of fiscal year	¥ 173,603	¥ 231,389	¥ 229,380

Subsequent Events (Narrative) (

Subsequent Events (Narrative) (Detail) - Subsequent Event - Common stock - JPY (¥) ¥ / shares in Units, ¥ in Millions	Jun. 30, 2023	Jun. 28, 2023
Subsequent Event [Line Items]
Dividends payable (in JPY per share)		¥ 16
Dividends payable, total amount	¥ 192,860