Mitsubishi UFJ Financial (MUFG) 20-F 18 Jul 14 2013 FY Annual report (foreign) Financial data

Document_and_Entity_Informatio

Document and Entity Information	12 Months Ended
	Mar. 31, 2014
Document Information [Line Items]	'
Document Type	'20-F
Amendment Flag	'false
Document Period End Date	31-Mar-14
Document Fiscal Year Focus	'2013
Document Fiscal Period Focus	'FY
Trading Symbol	'MTU
Entity Registrant Name	'MITSUBISHI UFJ FINANCIAL GROUP INC
Entity Central Index Key	'0000067088
Current Fiscal Year End Date	'--03-31
Entity Well-known Seasoned Issuer	'Yes
Entity Current Reporting Status	'Yes
Entity Filer Category	'Large Accelerated Filer
Entity Common Stock, Shares Outstanding	14,164,026,420

Consolidated_Balance_Sheets

Consolidated Balance Sheets (JPY ¥)	Mar. 31, 2014		Mar. 31, 2013
ASSETS	'		'
Cash and due from banks (Note 8)	¥ 3,689,228,000,000		¥ 3,619,253,000,000
Interest-earning deposits in other banks (Notes 8 and 31)	20,500,676,000,000		8,111,887,000,000
Call loans and funds sold (Note 10)	919,132,000,000		618,596,000,000
Receivables under resale agreements (Notes 15 and 31)	7,300,037,000,000		5,659,512,000,000
Receivables under securities borrowing transactions (Note 15)	4,210,057,000,000		2,615,172,000,000
Trading account assets (including assets pledged that secured parties are permitted to sell or repledge of ¥11,847,846 and ¥12,984,404 in 2013 and 2014) (including ¥16,290,536 and ¥18,251,847 measured at fair value under fair value option in 2013 and 2014) (Notes 8, 15, 23 and 31)	40,646,275,000,000		40,826,384,000,000
Investment securities (Notes 3, 8 and 31):	'		'
Securities available-for-sale-carried at fair value (including assets pledged that secured parties are permitted to sell or repledge of ¥1,974,928 and ¥3,053,872 in 2013 and 2014)	51,885,652,000,000		58,844,069,000,000
Securities being held-to-maturity-carried at amortized cost (including assets pledged that secured parties are permitted to sell or repledge of ¥300,821 and ¥110,100 in 2013 and 2014) (fair value of ¥2,188,070 and ¥2,735,127 in 2013 and 2014)	2,706,982,000,000		2,131,164,000,000
Other investment securities	737,617,000,000		889,952,000,000
Total investment securities	55,330,251,000,000		61,865,185,000,000
Loans, net of unearned income, unamortized premiums and deferred loan fees (including assets pledged that secured parties are permitted to sell or repledge of ¥1,952,868 and ¥1,608,498 in 2013 and 2014) (Notes 4 and 8)	110,276,411,000,000	[1]	98,590,229,000,000	[1]
Allowance for credit losses (Note 4)	-1,094,420,000,000		-1,335,987,000,000
Net loans	109,181,991,000,000		97,254,242,000,000
Premises and equipment-net (Note 5)	1,236,648,000,000		1,059,054,000,000
Accrued interest	277,222,000,000		255,192,000,000
Customers' acceptance liability	126,838,000,000		90,216,000,000
Intangible assets-net (Notes 2 and 6)	1,133,354,000,000		866,153,000,000
Goodwill (Notes 2 and 6)	728,515,000,000		417,956,000,000
Deferred tax assets (Notes 7 and 14)	362,267,000,000		514,679,000,000
Other assets (including ¥3,006 and ¥2,000 measured at fair value under fair value option in 2013 and 2014) (Notes 8, 13, 14 and 31)	8,018,586,000,000		6,785,795,000,000
Total assets	253,661,077,000,000		230,559,276,000,000
LIABILITIES AND EQUITY	'		'
Deposits (Notes 8 and 9): Domestic offices, Non-interest-bearing	16,644,469,000,000		15,327,957,000,000
Deposits (Notes 8 and 9): Domestic offices, Interest-bearing	104,860,603,000,000		103,003,820,000,000
Deposits (Notes 8 and 9): Overseas offices, Non-interest-bearing	4,478,271,000,000		3,481,750,000,000
Deposits (Notes 8 and 9): Overseas offices, Interest-bearing	36,534,443,000,000		26,396,212,000,000
Total deposits	162,517,786,000,000		148,209,739,000,000
Call money and funds purchased (Notes 8 and 10)	3,417,455,000,000		4,010,582,000,000
Payables under repurchase agreements (Notes 8 and 15)	21,268,072,000,000		15,700,394,000,000
Payables under securities lending transactions (Notes 8 and 15)	5,520,718,000,000		3,992,950,000,000
Due to trust account (Note 11)	750,210,000,000		633,029,000,000
Other short-term borrowings (including ¥5,041 and ¥28,875 measured at fair value under fair value option in 2013 and 2014) (Notes 8, 12 and 31)	11,106,071,000,000		11,608,598,000,000
Trading account liabilities (Notes 15, 23 and 31)	11,981,978,000,000		14,969,482,000,000
Obligations to return securities received as collateral (Notes 15 and 31)	3,971,454,000,000		3,034,547,000,000
Bank acceptances outstanding	126,838,000,000		90,216,000,000
Accrued interest	143,362,000,000		136,712,000,000
Long-term debt (including ¥564,845 and ¥687,927 measured at fair value under fair value option in 2013 and 2014) (Notes 8, 12 and 31)	14,498,678,000,000		12,182,358,000,000
Other liabilities (Notes 1, 7, 8, 13, 14 and 26)	5,607,011,000,000		5,048,689,000,000
Total liabilities	240,909,633,000,000		219,617,296,000,000
Commitments and contingent liabilities (Notes 24 and 26)	'		'
Mitsubishi UFJ Financial Group shareholders' equity (Note 21):	'		'
Capital stock (Notes 16 and 17): Preferred stock-aggregate liquidation preference of ¥390,001 in 2013 and 2014, with no stated value	442,100,000,000		442,100,000,000
Capital stock (Notes 16 and 17): Common stock-authorized, 33,000,000,000 shares; issued, 14,158,585,720 shares and 14,164,026,420 shares in 2013 and 2014, with no stated value	1,647,145,000,000		1,646,035,000,000
Capital surplus (Note 17)	6,363,413,000,000		6,348,133,000,000
Retained earnings (Notes 18 and 35):	'		'
Appropriated for legal reserve	239,571,000,000		239,571,000,000
Unappropriated retained earnings	2,157,639,000,000		1,361,620,000,000
Accumulated other comprehensive income, net of taxes (Note 19)	1,357,682,000,000		574,347,000,000
Treasury stock, at cost-4,374,857 common shares and 3,389,416 common shares in 2013 and 2014	-2,510,000,000		-3,011,000,000
Total Mitsubishi UFJ Financial Group shareholders' equity	12,205,040,000,000		10,608,795,000,000
Noncontrolling interests (Note 20)	546,404,000,000		333,185,000,000
Total equity	12,751,444,000,000		10,941,980,000,000
Total liabilities and equity	253,661,077,000,000		230,559,276,000,000
Consolidated VIEs [Member]	'		'
ASSETS	'		'
Cash and due from banks (Note 8)	3,167,000,000		2,692,000,000
Interest-earning deposits in other banks (Notes 8 and 31)	33,158,000,000		26,087,000,000
Trading account assets (including assets pledged that secured parties are permitted to sell or repledge of ¥11,847,846 and ¥12,984,404 in 2013 and 2014) (including ¥16,290,536 and ¥18,251,847 measured at fair value under fair value option in 2013 and 2014) (Notes 8, 15, 23 and 31)	2,219,754,000,000		2,376,590,000,000
Investment securities (Notes 3, 8 and 31):	'		'
Total investment securities	867,779,000,000		701,873,000,000
Loans, net of unearned income, unamortized premiums and deferred loan fees (including assets pledged that secured parties are permitted to sell or repledge of ¥1,952,868 and ¥1,608,498 in 2013 and 2014) (Notes 4 and 8)	7,019,653,000,000		6,814,877,000,000
Net loans	7,019,653,000,000		6,814,877,000,000
All other assets	236,131,000,000		254,978,000,000
Total assets	10,379,642,000,000		10,177,097,000,000
LIABILITIES AND EQUITY	'		'
Other short-term borrowings (including ¥5,041 and ¥28,875 measured at fair value under fair value option in 2013 and 2014) (Notes 8, 12 and 31)	44,221,000,000		39,773,000,000
Long-term debt (including ¥564,845 and ¥687,927 measured at fair value under fair value option in 2013 and 2014) (Notes 8, 12 and 31)	966,838,000,000		1,166,694,000,000
All other liabilities	259,404,000,000		378,679,000,000
Total liabilities	¥ 1,270,463,000,000		¥ 1,585,146,000,000
[1]	The above table includes loans held for sale of ¥35,261 million and ¥46,635 million at March 31, 2013 and 2014, respectively, which are carried at the lower of cost or estimated fair value.

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (JPY ¥)	Mar. 31, 2014	Mar. 31, 2013
In Millions, except Share data, unless otherwise specified
Trading account assets pledged and permitted to sell or repledge by secured parties	¥ 12,984,404	¥ 11,847,846
Trading account assets measured at fair value under fair value option	18,251,847	16,290,536
Securities available-for-sale pledged and permitted to sell or repledge by secured parties	3,053,872	1,974,928
Securities being held-to-maturity pledged and permitted to sell or repledge by secured parties	110,100	300,821
Securities being held-to-maturity, fair value	2,735,127	2,188,070
Loans, net of unearned income, unamortized premiums and deferred loan fees pledged and permitted to sell or repledge by secured parties	1,608,498	1,952,868
Other assets measured at fair value under fair value option	2,000	3,006
Other short-term borrowings measured at fair value under fair value option	28,875	5,041
Long-term debt measured at fair value under fair value option	687,927	564,845
Preferred stock, aggregate liquidation preference	¥ 390,001	¥ 390,001
Preferred stock, stated value	'	'
Common stock, authorized	33,000,000,000	33,000,000,000
Common stock, issued	14,164,026,420	14,158,585,720
Common stock, stated value	'	'
Treasury stock, shares	3,389,416	4,374,857

Consolidated_Statements_Of_Inc

Consolidated Statements Of Income (JPY ¥)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2012
Interest income:	'		'		'
Loans, including fees (Note 4)	¥ 1,663,742		¥ 1,577,770		¥ 1,595,097
Deposits in other banks	47,056		27,304		39,963
Investment securities:	'		'		'
Interest	229,732		266,640		307,812
Dividends	112,605		104,187		104,634
Gain on conversion rate adjustment of convertible preferred stock (Note 2)	'		'		139,320
Trading account assets	407,415		394,788		315,742
Call loans and funds sold	10,074		7,046		6,918
Receivables under resale agreements and securities borrowing transactions	51,659		49,786		86,470
Total	2,522,283		2,427,521		2,595,956
Interest expense:	'		'		'
Deposits	226,655		212,067		228,858
Call money and funds purchased	6,841		6,961		8,157
Payables under repurchase agreements and securities lending transactions	39,329		56,862		86,947
Due to trust account	519		665		647
Other short-term borrowings and trading account liabilities	57,501		52,342		61,657
Long-term debt	230,127		227,521		253,873
Total	560,972		556,418		640,139
Net interest income	1,961,311		1,871,103		1,955,817
Provision (credit) for credit losses (Note 4)	-106,371		144,542		223,809
Net interest income after provision (credit) for credit losses	2,067,682		1,726,561		1,732,008
Non-interest income:	'		'		'
Fees and commissions income (Note 27)	1,294,116		1,160,874		1,099,963
Foreign exchange gains (losses)-net (Note 28)	-61,755		-38,955		34,302
Trading account profits (losses)-net (Note 28)	-33,886		570,276		667,285
Investment securities gains-net (Note 3)	303,520	[1]	155,957	[1]	19,384	[1]
Equity in earnings (losses) of equity method investees-net (Notes 2 and 26)	110,520		60,210		-499,427
Gains on sales of loans (Note 4)	17,680		14,773		15,645
Government grant for transfer of substitutional portion of Employees' Pension Fund Plans (Note 13)	115,210		'		'
Other non-interest income (Note 20)	75,676		144,774		103,424
Total	1,821,081		2,067,909		1,440,576
Non-interest expense:	'		'		'
Salaries and employee benefits (Note 13)	1,029,580		932,399		900,144
Occupancy expenses-net (Notes 5 and 26)	158,393		151,138		150,808
Fees and commission expenses	222,038		209,782		204,734
Outsourcing expenses, including data processing	216,737		198,134		191,089
Depreciation of premises and equipment (Note 5)	103,714		94,035		94,777
Amortization of intangible assets (Note 6)	198,147		207,568		212,229
Impairment of intangible assets (Note 6)	312		3,378		30,986
Insurance premiums, including deposit insurance	101,135		98,711		115,376
Communications	50,868		47,095		49,276
Taxes and public charges	69,457		66,862		65,641
Other non-interest expenses (Notes 2, 4, 5, 6, 20 and 26)	317,939		369,497		307,582
Total	2,468,320		2,378,599		2,322,642
Income before income tax expense	1,420,443		1,415,871		849,942
Income tax expense (Note 7)	337,917		296,020		429,191
Net income before attribution of noncontrolling interests	1,082,526		1,119,851		420,751
Net income attributable to noncontrolling interests	67,133		50,727		4,520
Net income attributable to Mitsubishi UFJ Financial Group	1,015,393		1,069,124		416,231
Income allocated to preferred shareholders:	'		'		'
Cash dividends paid	17,940		17,940		17,940
Changes in a foreign affiliated company's interests in its subsidiary	3,301		'		'
Earnings applicable to common shareholders of Mitsubishi UFJ Financial Group	¥ 994,152		¥ 1,051,184		¥ 398,291
Earnings per common share applicable to common shareholders of Mitsubishi UFJ Financial Group (Notes 18 and 22):	'		'		'
Basic earnings per common share-Earnings applicable to common shareholders of Mitsubishi UFJ Financial Group	¥ 70.21		¥ 74.3		¥ 28.17
Diluted earnings per common share-Earnings applicable to common shareholders of Mitsubishi UFJ Financial Group	¥ 69.98		¥ 74.16		¥ 28.09
[1]	The following credit losses are included in Investment securities gains-net: Decline in fair value by ¥11,704 million, ¥7,457 million and ¥2,321 million; Other comprehensive income-net by ¥2,078 million, ¥872 million and ¥284 million; Total credit losses by ¥13,782 million, ¥8,329 million and ¥2,605 million, March 31, 2012, 2013 and 2014, respectively.

Consolidated_Statements_Of_Inc1

Consolidated Statements Of Income (Parenthetical) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Decline in fair value	¥ 2,321	¥ 7,457	¥ 11,704
Other comprehensive income-net	284	872	2,078
Total credit losses	¥ 2,605	¥ 8,329	¥ 13,782

Consolidated_Statements_Of_Com

Consolidated Statements Of Comprehensive Income (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2012
Net income before attribution of noncontrolling interests	¥ 1,082,526		¥ 1,119,851		¥ 420,751
Other comprehensive income (loss), net of tax (Note 19):	'		'		'
Net unrealized gains on investment securities	141,519	[1]	628,470	[1]	174,839	[1]
Net unrealized gains (losses) on derivatives qualifying for cash flow hedges	-361		3,423		437
Defined benefit plans	117,648		79,997		-94,215
Foreign currency translation adjustments	508,130		467,259		-49,543
Total	766,936		1,179,149		31,518
Comprehensive income	1,849,462		2,299,000		452,269
Net income attributable to noncontrolling interests	67,133		50,727		4,520
Other comprehensive income (loss) attributable to noncontrolling interests	-16,399		8,402		-743
Comprehensive income attributable to Mitsubishi UFJ Financial Group	¥ 1,798,728		¥ 2,239,871		¥ 448,492
[1]	Includes unrealized gains of ¥1,234 million, ¥555 million and ¥183 million, net of tax, related to debt securities with credit component realized in earnings for the fiscal years ended March 31, 2012, 2013 and 2014, respectively.

Consolidated_Statements_Of_Com1

Consolidated Statements Of Comprehensive Income (Parenthetical) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Net unrealized holding gains on investment securities, unrealized gains related to debt securities with credit component realized in earnings, net of tax	¥ 183	¥ 555	¥ 1,234

Consolidated_Statements_Of_Equ

Consolidated Statements Of Equity (JPY ¥)	Total	Mitsubishi UFJ Financial Group Shareholders' Equity [Member]	Mitsubishi UFJ Financial Group Shareholders' Equity [Member]	Mitsubishi UFJ Financial Group Shareholders' Equity [Member]	Mitsubishi UFJ Financial Group Shareholders' Equity [Member]	Mitsubishi UFJ Financial Group Shareholders' Equity [Member]	Mitsubishi UFJ Financial Group Shareholders' Equity [Member]	Mitsubishi UFJ Financial Group Shareholders' Equity [Member]	Mitsubishi UFJ Financial Group Shareholders' Equity [Member]	Mitsubishi UFJ Financial Group Shareholders' Equity [Member]	Noncontrolling Interests [Member]
In Millions			Preferred Stock [Member]	Common Stock [Member]	Capital Surplus [Member]	Retained Earnings Appropriated For Legal Reserve [Member]	Unappropriated Retained Earnings [Member]	Unappropriated Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss), Net Of Taxes [Member]	Treasury Stock [Member]
								Preferred Stock, Class 5 [Member]
Balance at beginning of fiscal year at Mar. 31, 2011	'	'	¥ 442,100	¥ 1,644,132	¥ 6,395,705	¥ 239,571	¥ 254,103	'	¥ (628,661)	¥ (11,251)	¥ 327,213
Issuance of new shares of common stock by way of exercise of stock acquisition rights	'	'	'	1,012	1,010	'	'	'	'	'	'
Stock-based compensation expense (Note 32)	'	'	'	'	1,370	'	'	'	'	'	'
Issuance of new shares of Mitsubishi UFJ Morgan Stanley Securities Co., Ltd. (Note 2)	'	-20,000	'	'	-20,000	'	'	'	'	'	30,000
Other-net	'	'	'	'	534	'	'	'	'	'	120
Net income attributable to Mitsubishi UFJ Financial Group	416,231	416,231	'	'	'	'	416,231	'	'	'	'
Cash dividends: Common stock	'	'	'	'	'	'	-169,776	'	'	'	'
Cash dividends: Preferred stock	-17,940	'	'	'	'	'	'	-17,940	'	'	'
Gains (losses) on sales of shares of treasury stock	'	'	'	'	'	'	-218	'	'	'	'
Effect of adopting new guidance on embedded credit derivatives (Note 1)	'	'	'	'	'	'	135	'	'	'	'
Net change during the fiscal year, Other comprehensive income (loss), net of taxes	31,518	'	'	'	'	'	'	'	32,261	'	-743
Purchases of shares of treasury stock (Note 17)	'	'	'	'	'	'	'	'	'	-18	'
Sales of shares of treasury stock	'	'	'	'	'	'	'	'	'	849	'
Net decrease (increase) resulting from changes in interests in consolidated subsidiaries, consolidated variable interest entities, and affiliated companies	'	'	'	'	'	'	'	'	'	2,009	'
Initial subscriptions of noncontrolling interests (Note 2)	'	'	'	'	'	'	'	'	'	'	9,991
Transactions between the consolidated subsidiaries and the related noncontrolling interest shareholders	'	'	'	'	'	'	'	'	'	'	-7,440
Decrease in noncontrolling interests related to deconsolidation of subsidiaries	'	'	'	'	'	'	'	'	'	'	-67,276
Decrease in noncontrolling interests related to disposition of subsidiaries	'	'	'	'	'	'	'	'	'	'	-4,609
Net income attributable to noncontrolling interests	4,520	'	'	'	'	'	'	'	'	'	4,520
Dividends paid to noncontrolling interests	'	'	'	'	'	'	'	'	'	'	-16,487
Balance at end of fiscal year at Mar. 31, 2012	8,858,447	8,583,158	442,100	1,645,144	6,378,619	239,571	482,535	'	-596,400	-8,411	275,289
Issuance of new shares of common stock by way of exercise of stock acquisition rights	'	'	'	891	889	'	'	'	'	'	'
Stock-based compensation expense (Note 32)	'	'	'	'	1,233	'	'	'	'	'	'
Purchase of shares of Mitsubishi UFJ Merrill Lynch PB Securities Co., Ltd. from noncontrolling interest shareholders (Note 2)	'	-30,655	'	'	-30,655	'	'	'	'	'	-8,345
Changes in a foreign affiliated company's interests in its subsidiary	'	'	'	'	-1,816	'	'	'	'	'	'
Other-net	'	'	'	'	-137	'	'	'	'	'	25
Net income attributable to Mitsubishi UFJ Financial Group	1,069,124	1,069,124	'	'	'	'	1,069,124	'	'	'	'
Cash dividends: Common stock	'	'	'	'	'	'	-169,819	'	'	'	'
Cash dividends: Preferred stock	-17,940	'	'	'	'	'	'	-17,940	'	'	'
Gains (losses) on sales of shares of treasury stock	'	'	'	'	'	'	-2,280	'	'	'	'
Net change during the fiscal year, Other comprehensive income (loss), net of taxes	1,179,149	'	'	'	'	'	'	'	1,170,747	'	8,402
Purchases of shares of treasury stock (Note 17)	'	'	'	'	'	'	'	'	'	-19	'
Sales of shares of treasury stock	'	'	'	'	'	'	'	'	'	4,888	'
Net decrease (increase) resulting from changes in interests in consolidated subsidiaries, consolidated variable interest entities, and affiliated companies	'	'	'	'	'	'	'	'	'	531	'
Initial subscriptions of noncontrolling interests (Note 2)	'	'	'	'	'	'	'	'	'	'	30,009
Transactions between the consolidated subsidiaries and the related noncontrolling interest shareholders	'	'	'	'	'	'	'	'	'	'	-3,262
Decrease in noncontrolling interests related to deconsolidation of subsidiaries	'	'	'	'	'	'	'	'	'	'	-8,090
Decrease in noncontrolling interests related to disposition of subsidiaries	'	'	'	'	'	'	'	'	'	'	-2,327
Net income attributable to noncontrolling interests	50,727	'	'	'	'	'	'	'	'	'	50,727
Dividends paid to noncontrolling interests	'	'	'	'	'	'	'	'	'	'	-9,243
Balance at end of fiscal year at Mar. 31, 2013	10,941,980	10,608,795	442,100	1,646,035	6,348,133	239,571	1,361,620	'	574,347	-3,011	333,185
Issuance of new shares of common stock by way of exercise of stock acquisition rights	'	'	'	1,110	1,108	'	'	'	'	'	'
Stock-based compensation expense (Note 32)	'	'	'	'	129	'	'	'	'	'	'
Changes in a foreign affiliated company's interests in its subsidiary	-3,301	'	'	'	'	'	-3,301	'	'	'	'
Reorganization of Mitsubishi UFJ Morgan Stanley PB Securities Co., Ltd. (Note 2)	'	13,839	'	'	13,839	'	'	'	'	'	-13,839
Other-net	'	'	'	'	204	'	'	'	'	'	-90
Net income attributable to Mitsubishi UFJ Financial Group	1,015,393	1,015,393	'	'	'	'	1,015,393	'	'	'	'
Cash dividends: Common stock	'	'	'	'	'	'	-198,191	'	'	'	'
Cash dividends: Preferred stock	-17,940	'	'	'	'	'	'	-17,940	'	'	'
Gains (losses) on sales of shares of treasury stock	'	'	'	'	'	'	58	'	'	'	'
Net change during the fiscal year, Other comprehensive income (loss), net of taxes	766,936	'	'	'	'	'	'	'	783,335	'	-16,399
Purchases of shares of treasury stock (Note 17)	'	'	'	'	'	'	'	'	'	-74	'
Sales of shares of treasury stock	'	'	'	'	'	'	'	'	'	753	'
Net decrease (increase) resulting from changes in interests in consolidated subsidiaries, consolidated variable interest entities, and affiliated companies	'	'	'	'	'	'	'	'	'	-178	'
Initial subscriptions of noncontrolling interests (Note 2)	'	'	'	'	'	'	'	'	'	'	237,307
Transactions between the consolidated subsidiaries and the related noncontrolling interest shareholders	'	'	'	'	'	'	'	'	'	'	2,117
Decrease in noncontrolling interests related to deconsolidation of subsidiaries	'	'	'	'	'	'	'	'	'	'	-48,524
Decrease in noncontrolling interests related to disposition of subsidiaries	'	'	'	'	'	'	'	'	'	'	-139
Net income attributable to noncontrolling interests	67,133	'	'	'	'	'	'	'	'	'	67,133
Dividends paid to noncontrolling interests	'	'	'	'	'	'	'	'	'	'	-14,347
Balance at end of fiscal year at Mar. 31, 2014	¥ 12,751,444	¥ 12,205,040	¥ 442,100	¥ 1,647,145	¥ 6,363,413	¥ 239,571	¥ 2,157,639	'	¥ 1,357,682	¥ (2,510)	¥ 546,404

Consolidated_Statements_Of_Equ1

Consolidated Statements Of Equity (Parenthetical) (Mitsubishi UFJ Financial Group Shareholders' Equity [Member], Unappropriated Retained Earnings [Member], JPY ¥)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Cash dividends: Common stock, per share	¥ 14	¥ 12	¥ 12
Preferred Stock, Class 5 [Member]	'	'	'
Cash dividends: Preferred stock, per share	¥ 115	¥ 115	¥ 115

Consolidated_Statements_Of_Cas

Consolidated Statements Of Cash Flows (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2012
Cash flows from operating activities:	'		'		'
Net income before attribution of noncontrolling interests	¥ 1,082,526		¥ 1,119,851		¥ 420,751
Adjustments to reconcile net income before attribution of noncontrolling interests to net cash provided by (used in) operating activities:	'		'		'
Depreciation and amortization	301,861		301,603		307,006
Impairment of intangible assets (Note 6)	312		3,378		30,986
Provision (credit) for credit losses (Note 4)	-106,371		144,542		223,809
Employee benefit cost for severance indemnities and pension plans (Note 13)	79,036		64,970		48,823
Government grant for transfer of substitutional portion of Employees' Pension Fund Plans (Note 13)	-115,210		'		'
Investment securities gains-net	-303,520	[1]	-155,957	[1]	-19,384	[1]
Amortization of premiums on investment securities	115,980		91,252		81,384
Changes in financial instruments measured at fair value under fair value option, excluding trading account securities-net (Note 31)	-91,410		-21,734		35,297
Foreign exchange losses (gains)-net	-1,090,193		-1,059,276		280,997
Equity in losses (earnings) of equity method investees-net (Note 2)	-110,520		-60,210		499,427
Provision (credit) for deferred income tax expense	-8,047		133,054		193,114
Gain on conversion rate adjustment of convertible preferred stock (Note 2)	'		'		-139,320
Decrease (increase) in trading account assets, excluding foreign exchange contracts	2,894,475		-3,269,053		-3,188,559
Increase (decrease) in trading account liabilities, excluding foreign exchange contracts	-2,622,957		796,656		2,326,503
Increase (decrease) in unearned income, unamortized premiums and deferred loan fees	5,214		-13		10,754
Increase in accrued interest receivable and other receivables	-95,966		-82,575		-110,209
Increase in accrued interest payable and other payables	100,760		4,162		36,425
Net increase (decrease) in accrued income taxes and decrease (increase) in income tax receivables	158,268		-125,309		116,180
Decrease in allowance for repayment of excess interest	-23,503		-21,777		-37,452
Net decrease (increase) in collateral for derivative transactions	528,901		-179,028		-618,295
Partial withdrawal of assets from employee retirement benefit trusts (Note 13)	'		44,851		'
Other-net	209,812		105,703		94,642
Net cash provided by (used in) operating activities	909,448		-2,164,910		592,879
Cash flows from investing activities:	'		'		'
Proceeds from sales of investment securities available-for-sale (including proceeds from securities under fair value option) (Note 3)	105,488,089		149,910,832		172,325,724
Proceeds from maturities of investment securities available-for-sale (including proceeds from securities under fair value option) (Note 3)	33,894,330		15,343,140		12,863,545
Purchases of investment securities available-for-sale (including purchases of securities under fair value option) (Note 3)	-132,922,207		-163,273,113		-192,356,659
Proceeds from maturities of investment securities being held-to-maturity	626,109		811,024		835,356
Purchases of investment securities being held-to-maturity	-473,345		-442,016		-263,300
Proceeds from sales of other investment securities	228,983		31,094		37,397
MUB's acquisition of PB Capital Corporation's institutional commercial real estate lending division (Note 2)	-358,040		'		'
Purchase of common stock investment in VietinBank, an affiliated company of BTMU (Note 2)	-75,136		'		'
Acquisition of Mitsubishi UFJ Fund Services Holdings Limited (formerly Butterfield Fulcrum Group), a subsidiary of MUTB (Note 2)	-30,191		'		'
Acquisition of Krungsri, a subsidiary of BTMU, net of cash acquired (Note 2)	-398,841		'		'
Purchases of other investment securities	-18,767		-8,034		-46,861
Net increase in loans	-4,426,839		-2,543,816		-5,609,261
Net decrease (increase) in interest-earning deposits in other banks	-11,738,061		-1,706,642		1,344,430
Net decrease (increase) in call loans, funds sold, and receivables under resale agreements and securities borrowing transactions	-2,062,236		106,337		471,372
Proceeds from sales of premises and equipment	30,420		36,015		20,618
Capital expenditures for premises and equipment	-158,492		-139,756		-131,187
Purchases of intangible assets	-211,942		-161,090		-155,308
Proceeds from sales and dispositions of investments in equity method investees	34,424		78,983		125,690
Proceeds from sales of consolidated VIEs and subsidiaries-net	164,674		20,951		1,297
Proceeds from a repayment of deposits with Government-led Loan Restructuring Program (Note 4)	'		204,956		161,435
Other-net	5,241		-69,120		11,462
Net cash used in investing activities	-12,401,827		-1,800,255		-10,364,250
Cash flows from financing activities:	'		'		'
Net increase in deposits	7,056,761		4,491,412		3,242,703
Net increase in call money, funds purchased, and payables under repurchase agreements and securities lending transactions	4,074,607		448,370		4,745,245
Net increase (decrease) in due to trust account	117,181		5,698		-6,210
Net increase (decrease) in other short-term borrowings	-1,031,642		429,163		2,409,172
Proceeds from issuance of long-term debt	4,036,415		2,187,511		1,875,591
Repayment of long-term debt	-2,540,895		-3,025,310		-2,263,232
Proceeds from sales of treasury stock	845		22		130
Payments to acquire treasury stock (Note 17)	-74		-19		-18
Payments for purchase of shares of Mitsubishi UFJ Merrill Lynch PB Securities Co., Ltd. from noncontrolling interest shareholders (Note 2)	'		-39,000		'
Dividends paid	-216,054		-187,720		-187,561
Dividends paid to noncontrolling interests	-14,347		-9,243		-16,445
Other-net	-7,702		-9,351		-11,523
Net cash provided by financing activities	11,475,095		4,291,533		9,787,852
Effect of exchange rate changes on cash and cash equivalents	87,259		62,476		-16,876
Net increase (decrease) in cash and cash equivalents	69,975		388,844		-395
Cash and cash equivalents at beginning of fiscal year	3,619,253		3,230,409		3,230,804
Cash and cash equivalents at end of fiscal year	3,689,228		3,619,253		3,230,409
Cash paid during the fiscal year for:	'		'		'
Interest	601,626		605,608		683,034
Income taxes, net of refunds	187,696		288,275		119,897
Non-cash investing and financing activities:	'		'		'
Obtaining assets by entering into capital lease	4,211		7,584		16,198
MUB's acquisitions (Note 2):	'		'		'
Fair value of assets acquired	416,059		626,921		'
Fair value of liabilities assumed	58,019		502,437		'
Acquisition of Krungsri, a subsidiary of BTMU (Note 2):	'		'		'
Fair value of assets acquired, excluding cash and cash equivalents	3,997,518		'		'
Fair value of liabilities assumed	3,396,454		'		'
Fair value of noncontrolling interests	202,223		'		'
Conversion of Morgan Stanley's convertible preferred stock (Note 2)	'		'		808,266
Transfer to investment securities being held to maturity from investment securities available for sale (Note 3)	¥ 411,535		¥ 12,356		'
[1]	The following credit losses are included in Investment securities gains-net: Decline in fair value by ¥11,704 million, ¥7,457 million and ¥2,321 million; Other comprehensive income-net by ¥2,078 million, ¥872 million and ¥284 million; Total credit losses by ¥13,782 million, ¥8,329 million and ¥2,605 million, March 31, 2012, 2013 and 2014, respectively.

Basis_Of_Financial_Statements_

Basis Of Financial Statements And Summary Of Significant Accounting Policies [Text Block]	12 Months Ended
	Mar. 31, 2014
Basis Of Financial Statements And Summary Of Significant Accounting Policies [Text Block]	'
	1		BASIS OF FINANCIAL STATEMENTS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	Description of Business
	Mitsubishi UFJ Financial Group, Inc. (“MUFG”) is a holding company for The Bank of Tokyo-Mitsubishi UFJ, Ltd. (“BTMU”), Mitsubishi UFJ Trust and Banking Corporation (“MUTB”), Mitsubishi UFJ Securities Holdings Co., Ltd. (“MUSHD”), Mitsubishi UFJ NICOS Co., Ltd. (“Mitsubishi UFJ NICOS”), and other subsidiaries. MUSHD is an intermediate holding company for Mitsubishi UFJ Morgan Stanley Securities Co., Ltd. (“MUMSS”). See Note 2 for more information on the securities joint venture with Morgan Stanley. 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.
	Effective July 1, 2014, BTMU operations in the Americas region were integrated with UnionBanCal Corporation (“UNBC”), an indirect wholly-owned subsidiary in the United States, and UNBC was renamed MUFG Americas Holdings Corporation (“MUAH”). Also effective July 1, 2014, the principal subsidiary of UNBC, Union Bank, N.A. (“Union Bank”) was renamed MUFG Union Bank, N.A. (“MUB”). Throughout these financial statements, the new corporate names, MUAH and MUB are used in place of UNBC and Union Bank, respectively.
	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 which are not included in the consolidated financial statements issued by MUFG and certain of its subsidiaries in accordance with 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, 2012, 2013 and 2014, 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 a decrease of ¥1.56 billion, an increase of ¥1.48 billion, and an increase of ¥6.79 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, 2012, 2013 and 2014 which, if recorded, would have had material effects on consolidated total assets, loans, total liabilities, deposits or total equity as of March 31, 2012, 2013 and 2014.
	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 allowances of deferred tax assets, recognition and measurement of uncertain tax positions, 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 are recorded in Total equity. Intercompany items 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 (losses) of these equity investees and other-than-temporary impairment are reported in Equity in earnings (losses) 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 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 entity, except certain VIEs that are deemed as investment companies. For VIEs that are considered investment companies, the MUFG Group determines whether it is the primary beneficiary by evaluation of whether it absorbs a majority of expected losses, receives a majority of expected residual returns or both.
	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 are defined as those amounts included in the accompanying consolidated balance sheets under the caption Cash and due from banks with original maturities of 90 days or less. 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 (loss) (“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. 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, 2012, 2013 and 2014, there were no such transactions accounted for as sales.
	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 securities 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 currently in Trading account profits—net, as appropriate. 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 Securities being held-to-maturity and are carried at amortized cost. Debt securities that the MUFG Group may not hold to maturity and marketable equity securities, other than those classified as Trading account securities, are classified as Securities available-for-sale, and are carried at their fair values, with unrealized gains and losses reported on a net-of-tax basis within Accumulated OCI, net of taxes, which is a component of equity. Other investment securities include nonmarketable equity securities carried at their acquisition cost and investment securities held by subsidiaries that are investment companies or brokers and dealers. Such securities held by those subsidiaries are subject to the specialized industry accounting principles for investment companies and brokers and dealers applicable for those subsidiaries. Securities of those subsidiaries are carried at their fair values.
	For marketable equity securities, an other-than-temporary impairment is recognized in earnings when a decline in fair value below the cost is deemed other than temporary. For debt securities, an other-than-temporary impairment 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 other-than-temporary impairment is recognized in earnings, but the noncredit component is recognized in Accumulated OCI. In determining other-than-temporary declines in fair value to be recognized as an impairment loss on investment securities, the MUFG Group generally considers factors such as the ability and positive intent to hold the investments for a period of time sufficient to allow for anticipated recovery in fair value, the financial condition of the issuer, the extent of decline in fair value, and the length of time that the decline in fair value below cost has existed. 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 the 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—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. Any ineffectiveness, which arises during the hedging relationship, is recognized in Non-interest income or expense in the period in which it arises. All qualifying hedging derivatives are valued at fair value and included in Other assets or Other liabilities, as appropriate. For cash flow hedges, the unrealized changes in fair value to the extent effective 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. The fair value of cash flow hedges related to forecasted transactions, if any, is recognized in Non-interest income or expense in the period when the forecasted transaction occurs. 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 Non-interest income or expense.
	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 sales 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. Interest income on loans that are not impaired is accrued and credited to interest income as it is earned. Unearned income and discounts or premiums on purchased loans are deferred and recognized over the remaining contractual terms of the loans using a method that approximates the interest method when such purchased loans are outside the scope of the guidance on loans and debt securities acquired with deteriorated credit quality as described below.
	The MUFG Group classifies its loan portfolio into the following portfolio segments—Commercial, Residential, Card, MUAH, and Bank of Ayudhya Public Company Limited (“Krungsri”) 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.
	Originated loans are considered impaired when, based on current information and events, it is probable that the MUFG Group will be unable to collect all the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Past due status is determined based on the contractual terms of the loan and the actual number of days since the last payment date, and is considered in determining impairment. Originated loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, and the amount of the shortfall in relation to the principal and interest owed. Impairment is generally evaluated on a loan-by-loan basis by either the present value of expected future cash flows discounted at the loan’s effective interest rate, the loan’s observable market price, or the fair value of the collateral if the loan is collateral dependent.
	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, MUAH, 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 restructured as a TDR, the borrower is not delinquent under the restructured 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 restructured 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.
	A loan that has been modified into a TDR is considered to be impaired until it matures, is repaid, or is otherwise liquidated, regardless of whether the borrower performs under the modified terms. Because loans modified in TDRs are considered to be impaired, these loans are measured for impairment using the MUFG Group’s established asset-specific allowance methodology, which considers the expected default rates for the modified loans. See “Allowance for Credit Losses” for a discussion for each portfolio segment.
	In accordance with the guidance on loans and debt securities acquired with deteriorated credit quality, impaired loans acquired for which it is probable that the MUFG Group will be unable to collect all contractual receivables are initially recorded at the present value of amounts expected to be received. For these impaired loans, the related valuation allowances are not carried over or created initially. Accretable yield is limited to the excess of the investor’s estimate of undiscounted cash flows over the investor’s initial investment in the loan. Subsequent increases in cash flows expected to be collected are recognized prospectively through adjustment of the loan’s yield over its remaining life after reduction of any remaining allowance for credit losses for the loan established after its acquisition, if any, while any decrease in such cash flows below those initially expected at acquisition plus additional cash flows expected to be collected arising from changes in estimate after acquisition is recognized as an impairment.
	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—The MUFG Group maintains an allowance for credit losses to absorb probable losses inherent in the loan portfolio. 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 and the allowance is at the appropriate amount to absorb probable losses inherent in the loan portfolio. During the fiscal year ended March 31, 2014, the MUFG Group did not make any significant changes to the methodologies or policies used to determine its allowance for credit losses.
	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 or 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. The MUFG Group updates these conditions and probable loss on a regular basis and upon the occurrence of unexpected change in the economic environment.
	The methodologies used to estimate the allowance and the charge-off policy for each portfolio segment are as follows:
	Commercial segment
	In the Commercial segment, the methodology for assessing the appropriateness of the allowance consists of several key elements, which include the allocated allowance for individual loans specifically identified for evaluation, the formula allowance, the allocated allowance for country risk exposure, and the allocated allowance for large groups of smaller-balance homogeneous loans.
	The allocated allowance for individual loans specifically identified for evaluation represents the impairment allowance determined in accordance with the guidance on accounting by creditors for impairment of a loan. The factors considered by management in determining impairment are the internal credit rating assigned to each borrower which represents the borrower’s creditworthiness determined based on payment status, number of delinquencies, and the probability of collecting principal and interest payments when due. The impairment of a loan is measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate, or on the loan’s observable market price, or based on the fair value of the collateral if the loan is collateral dependent.
	The formula allowance is applied to loans that are categorized as Normal or Close Watch, excluding loans identified as a TDR, based on the internal credit rating and historical loss factors which are based on the loss experience. See Note 4 for the information on loans to borrowers categorized based on the internal borrower rating. Estimated losses inherent in the loans at the balance sheet date are calculated by multiplying the default ratio by the nonrecoverable ratio (determined as a complement of the recovery ratio). The default ratio is determined by each internal credit rating, taking into account the historical number of defaults of borrowers within each internal credit rating divided by the total number of borrowers. The recovery ratio is mainly determined by the historical experience of collections against loans in default. The default ratio, the recovery ratio and other indicators are continually reviewed to determine the appropriate level of the allowance. Because the evaluation of inherent loss for these loans involves a high degree of uncertainty, subjectivity and judgment, the estimation of the formula allowance is back-tested by comparing the allowance with the actual results subsequent to the balance sheet date. The results of such back-testing are evaluated by management to determine whether the manner and level of formula allowance needs to be changed in subsequent years.
	The allocated allowance for country risk exposure is a country-specific allowance for Normal and Close Watch loans, excluding loans identified as a TDR. The allowance is established to supplement the formula allowance for these loans, based on an estimate of probable losses relating to the exposure to countries that are identified by management to have a high degree of transfer risk. The measurement is based on a function of default probability and the recovery ratio with reference to external credit ratings. For the allowance for individual cross-border loans specifically identified for evaluation, the MUFG Group incorporates transfer risk in its determination of the related allowance.
	The allocated allowance for large groups of smaller-balance homogeneous loans is established through a process that begins with estimates of probable losses inherent in the portfolio. These estimates are based upon various analyses, including historical delinquency and historical loss experience.
	Loans that have been modified into a TDR are treated as impaired loans. 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 effective interest rate of the loans prior to modification.
	In relation to loans categorized as Legally/Virtually Bankrupt, the 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 that are pooled by their internal credit ratings based on the number of delinquencies. The loans in this segment are generally secured by collateral. Collateral values are based on internal valuation sources, and the allowance is determined for unsecured amounts. The allowance for the nondelinquent group of loans is determined based on historical loss experience. For delinquent groups of loans, the MUFG Group determines the allowance based on the probability of insolvency by the number of actual delinquencies and historical loss experience.
	Loans that have been modified into a TDR are treated as impaired loans. 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 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 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 that are pooled by their internal credit rating based on the number of delinquencies. The allowance for loans in this segment is generally determined based on the probability of insolvency by the number of actual delinquencies and historical loss experience. For calculating the allocated allowance for loans specifically identified for evaluation, impaired loans are aggregated for the purpose of measuring impairment using historical loss factors.
	Loans that have been modified into a TDR are treated as impaired loans, and the allowance for credit losses is determined using the discounted cash flow method whereby the estimated future cash flows are discounted using the 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.
	MUAH segment
	In the MUAH segment, the methodology for assessing the appropriateness of the allowance consists of several key elements, which include the allocated allowance for individual loans specifically identified for evaluation, the formula allowance, the allocated allowance for large groups of smaller-balance homogeneous loans, and the unallocated allowance.
	The allocated allowance for individual loans specifically identified for evaluation is established for loans when management determines that the MUFG Group will be unable to collect all amounts due according to the contractual terms of the loan agreement, including interest payments. Impaired loans are carried at the lower of the recorded investment in the loan, the present value of expected future cash flows discounted at the loan’s effective rate, the loan’s observable market price, or the fair value of the collateral, if the loan is collateral dependent.
	The formula allowance is calculated by applying historical loss factors to outstanding loans. Historical loss factors are based on the historical loss experience and may be adjusted for significant factors that, in management’s judgment, affect the collectibility of the portfolio as of the balance sheet date.
	The allocated allowance for large groups of smaller-balance homogeneous loans is established for consumer loans as well as for smaller balance commercial loans. These loans are managed by a pool basis, and loss factors are based on expected net charge-off ranges.
	The unallocated allowance represents an estimate of additional losses inherent in the loan portfolio and is composed of attribution factors, which are based upon management’s evaluation of various conditions that are not directly measured in the determination of the allocated allowance. The conditions used for consideration of the unallocated allowance at each balance sheet date include factors such as, existing general economic and business conditions affecting the key lending areas and products of the MUFG Group, credit quality trends and risk identification, collateral values, loan volumes, underwriting standards and concentrations, specific industry conditions, recent loss experience and the duration of the current business cycle. The MUFG Group reviews these conditions and has an internal discussion with senior credit officers on a quarterly basis.
	Loans that have been modified into a TDR are treated as impaired loans. 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 effective interest rate of the loans prior to modification.
	Commercial loans are generally considered uncollectible based on an evaluation of the financial condition of a borrower as well as the value of any collateral and, when considered to be uncollectible, loans are charged off in whole or in part. Consumer loans are generally considered uncollectible based on past due status and the value of any collateral and, when considered to be uncollectible, loans are charged off in whole or in part.
Krungsri segment
In the Krungsri segment, the methodology for assessing the appropriateness of the allowance consists of several key elements, which include the allocated allowance for individual loans specifically identified for evaluation, the formula allowance, and the allocated allowance for large groups of smaller-balance homogeneous loans.
The allocated allowance for individual loans specifically identified for evaluation is established for loans when management determines that the MUFG Group will be unable to collect all amounts due according to the contractual terms of the loan agreement, including interest payments. Impaired loans are carried at the lower of the recorded investment in the loan, the present value of expected future cash flows discounted at the loan’s effective rate, the loan’s observable market price, or the fair value of the collateral, if the loan is collateral dependent.
The formula allowance is calculated by applying historical loss factors to outstanding loans. Historical loss factors are based on the historical loss experience and may be adjusted for significant factors that, in management’s judgment, affect the collectibility of the portfolio as of the balance sheet date.
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 by a pool basis, and loss factors are based on expected net charge-off ranges.
Loans that have been modified into a TDR are treated as impaired loans. 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 effective interest rate of the loans prior to modification.
Loans to customers are charged off in the year that they are determined to be uncollectible considering the financial condition of a borrower.
Allowance for Off-Balance Sheet Credit Instruments—The MUFG Group maintains an allowance for credit losses on off-balance sheet credit instruments, 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.
Net changes in the allowance for off-balance sheet credit instruments are accounted for as Other non-interest expenses.
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, BTMU and MUTB 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			10 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.
Asset retirement obligations related to restoration of certain leased properties upon lease termination are recorded in Other liabilities with a corresponding increase in leasehold improvements. The amounts represent the present value of expected future cash flows associated with returning such leased properties to their original condition. The difference between the gross and present value of expected future cash flows is accreted over the life of the related leases as a non-interest expense.
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. A reporting unit is an operating segment, or an identified business unit one level below an operating segment. An impairment loss is recognized to the extent that the carrying amount of goodwill exceeds its implied fair value.
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		Amortization method
		(years)
Software			2 to 10	Straight-line
Core deposit intangibles			4 to 19	Declining-balance
Customer relationships			7 to 27	Straight-line, Declining-balance
Trade names			2 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.
The MUFG Group capitalizes certain costs associated with the acquisition or development of internal-use software. Costs subject to capitalization are salaries and employee benefits for employees who are directly associated with and who devote time to the internal-use computer software project, to the extent of time spent directly on the project. Once the software is ready for its intended use, the MUFG Group begins to amortize capitalized costs on a straight-line basis.
Accrued Severance and Pension Liabilities—The MUFG Group has defined benefit pension plans and other postretirement benefit plans, including severance indemnities plans. 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 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. The costs of the plans, based on actuarial computations of current and future employee benefits, were charged to Salaries and employee benefits. The MUFG Group measures plan assets and benefit obligations as of the date of the consolidated balance sheets.
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 terms of the long-term debt.
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 ratably over the guarantee period.
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—Revenue recognition of major components of fees and commissions is as follows:
	Ÿ		Fees on funds transfer and collection services, service charges on deposit accounts, fees and commissions on securities business, fees on real estate business, insurance commissions, fees and commissions on stock transfer agency services, fees on investment funds business, and fees and commissions from other services are generally recognized as revenue when the related services are performed or recognized over the period that the service is provided.
	Ÿ		Fees from trade-related financing services are recognized over the period of the financing.
	Ÿ		Trust fees 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 guarantee of trust principal, trust fees are determined based on the profits earned by individual trust account during the trust accounting period, less deductions, including provision for reserve, 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.
	Ÿ		Annual fees and royalty and other service charges related to credit card business are recorded on a straight-line basis as services are provided.
	Ÿ		Interchange income from the credit card business is recognized as billed.
	Ÿ		Fees on guarantees are generally recognized over the contractual periods of the respective guarantees. Amounts initially recorded as a liability corresponding to the obligations at fair value are generally recognized as revenue over the terms of the guarantees as the MUFG Group is deemed to be released from the risk under guarantees.
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.
Uncertain tax positions are recorded on the basis of a two-step process whereby (1) it is determined whether it is more likely than not that the tax position will be sustained on the basis of its technical merits, and (2) for those tax positions that meet the more-likely-than-not recognition threshold, the MUFG Group recognizes the largest amount of tax benefit that is more than 50% likely to be realized upon ultimate settlement with the related tax authority. The MUFG Group recognizes interest and penalties related to unrecognized tax benefits within the income tax expense. Accrued interest and penalties are included within Other liabilities.
Free Distributions of Common Shares—As permitted by the Company Law of Japan (the “Company Law”), 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 17 for further information.
Earnings 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—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 (Loss)—Comprehensive income (loss) 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.
Stock-Based Compensation—MUFG and certain of its subsidiaries have stock-based compensation plans. Stock-based compensation expenses are recognized based on the grant date fair value of share based compensation over the period during which an employee is required to provide service in accordance with the terms of the plans. See Note 32 for further discussion of stock-based compensation plans.
Reclassifications
Certain reclassifications and format changes have been made to the consolidated financial statements for the fiscal years ended March 31, 2012 and 2013 to conform to the presentation for the fiscal year ended March 31, 2014.
These reclassifications and format changes include the integration of “Provision (reversal) for repayment of excess interest” into “Other non-interest expenses” which had previously been presented as a separate line item in non-interest expense in the accompanying consolidated statements of income for the fiscal years ended March 31, 2012 and 2013.
These reclassifications and format changes did not result in a change to previously reported financial positions and results of operations.
Accounting Changes
Amendments to Accounting Scope of Embedded Credit Derivatives—In March 2010, the FASB issued new guidance which clarifies the scope exception related to embedded credit derivatives. This guidance addresses how to determine which embedded credit derivative features, including those in collateralized debt obligations (“CDOs”) and synthetic CDOs, are considered to be embedded derivatives that are exempt from potential bifurcation and separate accounting requirement. This guidance is effective for the first interim reporting period beginning after June 15, 2010 with early application permitted at the beginning of the first interim reporting period beginning after the issuance of this new guidance. In initially adopting this new guidance, an entity may elect the fair value option for any investment in a beneficial interest in a securitized financial asset. The election of the fair value option is irrevocable and should be determined on an instrument-by-instrument basis at the beginning of the reporting period of initial adoption. The MUFG Group adopted this guidance on April 1, 2011, and recorded a ¥135 million increase to retained earnings as a cumulative effect adjustment.
Amendments to the Presentation of Comprehensive Income—In February 2013, the FASB issued new guidance which requires an entity to present separately for each component of OCI, current period reclassifications out of Accumulated OCI and other amounts of current period OCI. In addition, the guidance requires an entity to report the effect of significant reclassifications out of Accumulated OCI on the respective line items in net income if the amount being reclassified is required under U.S. GAAP to be reclassified in its entirety to net income. For other amounts that are not required under U.S. GAAP to be reclassified in their entirety to net income in the same reporting period, an entity is required to cross-reference other disclosures required under U.S. GAAP that provide additional detail about those amounts. The amendments in this guidance are effective for fiscal years, and interim periods within those years, beginning after December 15, 2012. Early adoption is permitted. The MUFG Group adopted this guidance on April 1, 2013. As a result of the adoption of this guidance, the presentation of the MUFG Group’s consolidated statements of comprehensive income and consolidated statements of equity were changed, while disclosures related to Accumulated OCI were added. This guidance had no impact on its financial position and result of operations. See Note 19 for further details of the required disclosures.
Disclosures about Offsetting Assets and Liabilities—In December 2011, the FASB issued new guidance which requires that entities disclose both gross information and net information about both instruments and transactions eligible for offset in the statement of financial position and instruments and transactions subject to an agreement similar to a master netting arrangement. In January 2013, the FASB issued further guidance which provides clarification that the scope of the guidance on disclosures about offsetting assets and liabilities applies to derivatives, including bifurcated embedded derivatives, repurchase agreements and reverse repurchase agreements, and securities borrowing and securities lending transactions that are either offset in accordance with existing guidance or subject to an enforceable master netting arrangement or similar agreement. An entity should provide the disclosures required by those amendments retrospectively for all comparative periods presented. The MUFG Group adopted this guidance on April 1, 2013, which had no impact on its financial position and results of operations. See Note 15 for further details of the required disclosures.
Subsequent Accounting for an Indemnification Asset Recognized at the Acquisition Date as a Result of a Government-Assisted Acquisition of a Financial Institution—In October 2012, the FASB issued new guidance, which clarifies the accounting guidance for subsequently measuring an indemnification asset recognized as a result of a government-assisted acquisition of a financial institution when a change in cash flows expected to be collected occurs. This guidance specifies that an entity shall subsequently account for the change in measurement of the indemnification asset on the same basis as the change in assets subject to the indemnification and limit any amortization of changes in value to the lesser of the contractual term of the indemnification agreement or the remaining life of the indemnified assets. This guidance is effective for fiscal years, and interim periods within those years, beginning on or after December 15, 2012. Early adoption is permitted. The MUFG Group adopted this guidance on April 1, 2013, which had no impact on its financial position and results of operations.
Recently Issued Accounting Pronouncements
Obligations Resulting from Joint and Several Liability Arrangements for Which the Total Amount of the Obligation Is Fixed at the Reporting Date—In February 2013, the FASB issued new guidance for the recognition, measurement, and disclosure of obligations resulting from joint and several liability arrangements for which the total amount of the obligation within the scope of this guidance is fixed at the reporting date, except for obligations addressed within existing guidance in U.S. GAAP. This guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. The MUFG Group does not expect that the adoption of the guidance will have a material impact on its financial position and results of operations.
Parent’s Accounting for the Cumulative Translation Adjustment upon Derecognition of Certain Subsidiaries or Groups of Assets within a Foreign Entity or of an Investment in a Foreign Entity—In March 2013, the FASB issued new guidance which requires the release of an entity’s cumulative translation adjustment into net income only if the sale or transfer results in the complete or substantially complete liquidation of the foreign entity in which the subsidiary or group of assets had resided. This guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. The MUFG Group does not expect that the adoption of the guidance will have a material impact on its financial position and results of operations.
Amendments to the Scope, Measurement, and Disclosure Requirements for Investment Companies—In June 2013, the FASB issued guidance that changed the approach for determining whether an entity is an investment company under U.S. GAAP, and set forth certain measurement and disclosure requirements. This guidance changes the approach to the investment company assessment, clarifies the characteristics of an investment company, and provides comprehensive guidance for assessing whether an entity is an investment company. In addition, this guidance requires an investment company to measure noncontrolling ownership interests in other investment companies at fair value rather than using the equity method of accounting. Also, this guidance requires additional disclosures about an entity’s status as an investment company and financial support provided or contractually required to be provided by an investment company to its investees. This guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. Early adoption of this guidance is prohibited. The MUFG Group does not expect that the adoption of the guidance will have a material impact on its financial position and results of operations.
Accounting for Investments in Qualified Affordable Housing Projects—In January 2014, the FASB issued guidance on accounting for investments by a reporting entity in flow-through limited liability entities that manage or invest in affordable housing projects that qualify for the low-income housing tax credit. The guidance permit reporting entities to make an accounting policy election to account for their investments in qualified affordable housing projects using the proportional amortization method if certain conditions are met. Under the proportional amortization method, an entity amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognizes the net investment performance in the income statement as a component of income tax expense (benefit). For those investments in qualified affordable housing projects not accounted for using the proportional amortization method, the investment should be accounted for as an equity method investment or a cost method investment. This guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2014 and should be applied retrospectively to all periods presented. The MUFG Group has not completed the study of what effect this guidance will have on its financial position and results of operations.
Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure—In January 2014, the FASB issued guidance that clarifies that an in substance repossession or foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either (1) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or (2) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Additionally, the amendments require interim and annual disclosures of both the amount of foreclosed residential real estate property held by the creditor and the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure according to local requirements of the applicable jurisdiction. This guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2014. Early adoption of this guidance is permitted. The MUFG Group has not completed the study of what effect this guidance will have on its financial position and results of operations.
Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity—In April 2014, the FASB issued new guidance that changes the requirements for reporting discontinued operations. A disposal of a component of an entity or a group of components of an entity is required to be reported in discontinued operations if the disposal represents a strategic shift that has (or will have) a major effect on an entity’s operations and financial results when the component of an entity or group of components of an entity meets certain criteria to be classified as held for sale or disposed. This guidance requires an entity to present, for each comparative period, the assets and liabilities of a disposal group that includes a discontinued operation separately in the asset and liability sections, respectively, of the statement of financial position and additional disclosures. Also, this guidance requires an entity to provide disclosures about a disposal of an individually significant component of an entity that does not qualify for discontinued operations presentation in the financial statements. This guidance is effective for all disposals (or classifications as held for sale) of components of an entity that occur within annual periods beginning on or after December 15, 2014, and interim periods within those years and all businesses that, on acquisition, are classified as held for sale that occur within annual periods beginning on or after December 15, 2014, and interim periods within those years. The MUFG Group does not expect that the adoption of the guidance will have a material impact on its financial position and results of operations. In case there will be discontinued operations, the MUFG Group should provide related disclosures as required in this guidance.
Revenue from Contracts with Customers—In May 2014, the FASB issued new guidance which supersedes the current revenue recognition requirements, including most industry-specific guidance. The core principle of the guidance is that an entity should recognize revenue to depict the transfers of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance also requires additional disclosures about the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers, including significant judgments and changes in judgments, and assets recognized from the costs incurred to obtain or fulfill a contract. This guidance is effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early application is not permitted. The MUFG Group has not completed the study of what effect this guidance will have on its financial position and results of operations.
Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures—In June 2014, the FASB issued new guidance which changes the accounting for both repurchase-to-maturity transactions and repurchase financing arrangements. The guidance also requires an entity to disclose information about certain transactions accounted for as a sale in which the transferor retains substantially all of the exposure to the economic return on the transferred financial assets through an agreement with the same counterparty, and information about repurchase agreements, securities lending transactions, and repurchase-to-maturity transactions that are accounted for as secured borrowings. This guidance is effective for interim and annual periods beginning after December 15, 2014, except for the disclosure requirement about repurchase agreements, securities lending transactions, and repurchase-to-maturity transactions accounted for as secured borrowings, that is effective for annual periods beginning after December 15, 2014, and for interim periods beginning after March 15, 2015. The MUFG Group has not completed the study of what effect this guidance will have on its financial position and results of operations.

Business_Developments_Text_Blo

Business Developments [Text Block]	12 Months Ended
	Mar. 31, 2014
Business Developments [Text Block]	'
	2	BUSINESS DEVELOPMENTS
	MUFG Americas Holdings Corporation
	On December 1, 2012, MUB, a subsidiary of MUAH, acquired certain assets and assumed certain liabilities of Pacific Capital Bancorp, a bank holding company headquartered in Santa Barbara, California, for ¥124,484 million in cash, and thereby recorded goodwill of ¥33,875 million and intangible assets of ¥6,093 million.
	On June 24, 2013, MUB acquired PB Capital Corporation’s institutional commercial real estate (“CRE”) lending division for ¥358,040 million in cash, and thereby recorded goodwill of ¥22,077 million. The purpose of this transaction is to expand the MUAH’s CRE presence in the U.S., and provide geographic and asset class diversification. The assets acquired and liabilities assumed were recorded at their estimated fair values on the acquisition date. These fair value estimates are considered provisional and are subject to change pending the receipt of additional information relative to closing date fair values, but not to exceed a period of one year after the closing date of the acquisition. During the year ended March 31, 2014, measurement period adjustments were applied to the acquisition date fair values, which increased goodwill by ¥1,038 million.
	Investment in Morgan Stanley
	On September 29, 2008, the MUFG Group and Morgan Stanley completed a final agreement to enter into a strategic capital alliance aiming to build a global strategic alliance primarily in the corporate and investment bank fields. On October 13, 2008, the MUFG Group purchased shares of preferred stock issued by Morgan Stanley. The investment in Morgan Stanley’s preferred stock consisted of Series B Non-cumulative Non-voting Perpetual Convertible Preferred Stock (“Series B Preferred Stock”) and Series C Non-cumulative Non-voting Perpetual Preferred Stock. On April 21, 2011, the MUFG Group and Morgan Stanley entered into an agreement to convert the Series B Preferred Stock with a face value of ¥808,266 million, into Morgan Stanley’s common stock. On June 30, 2011, the MUFG Group converted the Series B Preferred Stock for approximately 385 million shares of Morgan Stanley’s common stock, including approximately 75 million additional shares resulting from the adjustment to the conversion rate pursuant to the agreement. The adjustment to the conversion rate was recognized as a gain of ¥139,320 million, which was included in Gain on conversion rate adjustment of convertible preferred stock in Interest income on investment securities in the accompanying consolidated statement of income for the fiscal year ended March 31, 2012.
	Prior to the conversion, the MUFG Group held approximately 3.0% of Morgan Stanley’s common stock and the investment was included in Investment securities available-for-sale. As a result of the conversion, the MUFG Group held approximately 22.4% of Morgan Stanley’s common stock, giving the MUFG Group the ability to exercise significant influence over the operations of Morgan Stanley. Accordingly, the MUFG Group has adopted the equity method of accounting for its investment in Morgan Stanley from June 30, 2011. The MUFG Group’s investments, results of operations and retained earnings were adjusted retroactively on a step-by-step basis as if the equity method of accounting had been in effect during all previous periods. The MUFG Group’s retroactive adjustment was applied to the existing approximately 3.0% investment in Morgan Stanley’s common stock through June 30, 2011. Following the conversion, the MUFG Group began recognizing its approximately 22.4% interest in Morgan Stanley’s common stock as an investment in an equity method investee included in Other assets.
	Upon qualifying for the equity method of accounting on June 30, 2011, the MUFG Group performed a valuation of its Morgan Stanley investment. As a result of the valuation, the carrying amount of the MUFG Group’s investment in common stock exceeded the underlying equity in net assets of Morgan Stanley and the excess was recognized as goodwill.
	At September 30, 2011, the quoted market price of Morgan Stanley’s common stock had declined 41% from the quoted market price at June 30, 2011. The quoted market price at September 30, 2011 represented less than half of the MUFG Group’s carrying amount on a per share basis. The MUFG Group evaluated this stock price decline to determine whether the investment in Morgan Stanley was other than temporarily impaired. The MUFG Group determined that the decline in the stock price was other than temporary in light of the increasingly stringent regulatory environment and the existing adverse economic events in Europe. More specifically, new and pending regulations, such as the U.S. Dodd-Frank Wall Street Reform and Consumer Protection Act (“the Dodd-Frank Act”) and the global regulatory framework often referred to as “Basel III,” were expected to impose significant constraints on the business activities of financial institutions, including the prohibition on certain transactions, the enhancement of risk management frameworks, and the increase in capital adequacy requirements. Rules designed to further regulate the business operations of financial institutions were being adopted, or were at the time scheduled soon to be adopted, by government agencies, including the rules relating to resolution plans and rules generally referred to as the Volcker Rule under the Dodd-Frank Act. Furthermore, the impact of the prolonged European economic crisis had resulted in negative long-term prospects for the global financial market. The events in Europe had an immediate effect on financial institutions holding sovereign securities and were also expected to have long-term consequences for financial institutions with operations in Europe. Given these uncertain economic environment and increasing regulatory challenges, and the significant excess of the carrying amount per share over the quoted market price of Morgan Stanley’s common stock, the MUFG Group recorded an other-than-temporary impairment loss of ¥579,468 million at September 30, 2011. The MUFG Group’s investment in Morgan Stanley’s common stock was adjusted to the quoted market price of Morgan Stanley’s common stock as of September 30, 2011, and the impairment loss was reflected in Equity in earnings (losses) of equity method investees-net in the accompanying consolidated statement of income for the fiscal year ended March 31, 2012. The MUFG Group recorded no additional other-than-temporary impairment loss during the fiscal year ended March 31, 2013 and 2014. See Note 14 for more information.
	Reorganization of Mitsubishi UFJ Morgan Stanley PB Securities Co., Ltd.
	On December 26, 2012, MUSHD and BTMU acquired the remaining 49% ownership of Mitsubishi UFJ Merrill Lynch PB Securities Co., Ltd., which had been 51% owned subsidiary of the MUFG Group. As a result, it became a wholly-owned subsidiary of MUFG. The acquisition was accounted for as an equity transaction, and the excess of the cash consideration paid over the Noncontrolling interest was recognized as a reduction of Capital surplus. The purpose of making Mitsubishi UFJ Merrill Lynch PB Securities Co., Ltd. a wholly-owned subsidiary is to further strengthen private banking services for high-net-worth customers.
	On March 20, 2014, MUMSS acquired 75% ownership of Mitsubishi UFJ Merrill Lynch PB Securities Co., Ltd., of which 51% ownership and 24% ownership were from MUSHD and BTMU, respectively, resulting in BTMU holding the remaining 25% ownership. 40% of the difference between the cash paid by MUMSS and the cost basis of assets and liabilities was ¥13,839 million, which was allocated as a reduction in Noncontrolling interests with a corresponding increase in Capital surplus. The purpose of the reorganization are to leverage MUFG’s broad customer base, utilize Morgan Stanley’s global and high quality insight, and further its collaborations with other group companies by strengthening its coordination with MUMSS. In connection with the reorganization, Mitsubishi UFJ Merrill Lynch PB Securities Co., Ltd. entered into a new service agreement with Morgan Stanley, and changed its name to Mitsubishi UFJ Morgan Stanley PB Securities Co., Ltd.
	Securities Joint Venture with Morgan Stanley
	On March 30, 2010, the MUFG Group and Morgan Stanley entered into a securities joint venture agreement to integrate their securities business. The purpose of the joint venture is to collaborate in providing capital markets services to investment banking clients of the MUFG Group and Morgan Stanley and in offering a wide range of products and services, including Morgan Stanley’s global products and services, to the MUFG Group’s retail and middle market customers in Japan as well as to investment banking clients of both parties. The two joint venture companies will continue to offer products and services in sales and trading and research areas separately.
	In relation to the integration of the securities companies in Japan, the former Mitsubishi UFJ Securities Co., Ltd. (“MUS”) was restructured into an intermediate holding company, MUSHD, and a securities business subsidiary, MUS. On May 1, 2010, MUS changed its name to MUMSS and the MUFG Group’s ownership interest in MUMSS also changed from 100% to 60%, with Morgan Stanley holding the remaining 40% voting and economic interest. Since the MUFG Group has retained control of MUMSS, the change in the MUFG Group’s ownership interest has been accounted for as an equity transaction and the MUFG Group has recorded ¥127 billion and ¥21 billion of noncontrolling interests and capital surplus, respectively. MUMSS continues the existing Japan based retail, middle markets, capital markets and sales and trading businesses of the former MUS while integrating the investment banking team of the former Morgan Stanley Japan Securities Co., Ltd. (“MSJS”).
	Also, on May 1, 2010, MSJS was renamed to Morgan Stanley MUFG Securities Co., Ltd. (“MSMS”). MSMS continues to provide the existing sales and trading and capital markets operations of the former MSJS. The MUFG Group holds a 49% voting interest and a 60% economic interest in MSMS while Morgan Stanley holds the remaining 51% voting interest and 40% economic interest. The MUFG Group applies the equity method of accounting to MSMS due to its significant influence.
	Per the shareholders’ agreement between the MUFG Group and Morgan Stanley, to the extent that losses incurred by MUMSS or MSMS result in a requirement to restore its capital, the controlling shareholder is solely responsible for providing additional capital to a minimum level and the noncontrolling shareholder is not obligated to contribute additional capital.
	On April 22, 2011, due to losses incurred by MUMSS in the fiscal year ended March 31, 2011, the MUFG Group contributed ¥30 billion of new capital to MUMSS by acquiring newly issued shares of MUMSS. In October 2011, MUMSS implemented an early retirement program to reduce expenditures and improve operating performance. MUMSS recorded employee termination expenses of ¥20 billion in the second half of the fiscal year ended March 31, 2012. On November 24, 2011, the MUFG Group contributed ¥20 billion of new capital to MUMSS by acquiring newly issued shares of MUMSS in order to restore its capital adversely affected by the expenses during the fiscal year ended March 31, 2012. The additional capital in MUMSS improves and strengthens its capital base and restores its capital adequacy level. The new MUMSS shares have no voting rights and do not change the proportion of voting interests in MUMSS or change the right to participate in MUMSS’ earnings. In order to reflect the existing 60% economic interest in MUMSS after the MUFG Group’s capital contribution, 40% of the new share issuance on April 2011 and November 2011, or ¥12 billion and ¥8 billion, respectively, was recognized as an increase in noncontrolling interest and a reduction of capital surplus, given that the rights to participate in the residual assets of MUMSS will be distributed to the MUFG Group and Morgan Stanley in proportion to their percentage ownership interests.
	To the extent that MUMSS is required to increase its capital level due to factors other than losses, such as future regulatory capital changes, both the MUFG Group and Morgan Stanley are required to contribute the necessary capital based upon their economic interests as set forth above. In this context, to meet an anticipated change in regulatory capital requirements for MUMSS, the MUFG Group contributed ¥15 billion and Morgan Stanley contributed ¥10 billion of additional proportionate capital investments on November 24, 2011, and the contribution by Morgan Stanley was recognized as an increase of noncontrolling interest.
	MUTB’s Acquisition of Butterfield Fulcrum Group
	On September 20, 2013, MUTB acquired 100% ownership of FGL Lux Holdings, S.a r.l., a holding company of Butterfield Fulcrum Group headquartered in Bermuda for ¥30,191 million in cash, and thereby recorded goodwill of ¥20,274 million. Butterfield Fulcrum Group is a global alternative fund administrator. MUTB has focused on strengthening its global trust banking business based on its medium-term management plan, and conducted several strategic investments in overseas asset managers. The purpose of this transaction, through the investment in a fund administration company, is to expand MUTB’s overseas asset administration capabilities. The assets acquired and liabilities assumed were recorded at their estimated fair values on the acquisition date. During the year ended March 31, 2014, measurement period adjustments were applied to the acquisition date fair values, which decreased goodwill by ¥5,831 million and recorded intangible assets of ¥21,646 million. After this transaction, Butterfield Fulcrum Group was renamed Mitsubishi UFJ Fund Services Holdings Limited.
	BTMU’s Acquisition of Vietnam Joint Stock Commercial Bank for Industry and Trade
	In May 2013, BTMU acquired approximately 20% of the ordinary shares of Vietnam Joint Stock Commercial Bank for Industry and Trade (“VietinBank”) for ¥75,136 million. VietinBank is one of the major Vietnamese state-owned commercial banks in terms of assets. Considering both BTMU’s ownership of the common stock and representation on the board of directors, the MUFG Group has determined that BTMU has the ability to exercise significant influence over the operating and financial policies of VietinBank and applied the equity method of accounting for its investment.
	BTMU’s Acquisition of Bank of Ayudhya Public Company Limited
	On December 18, 2013, BTMU completed a Voluntary Tender Offer (“VTO”) for Krungsri shares at Thai baht 39 per share. Upon the completion of VTO, BTMU purchased 72.01% of Krungsri’s total outstanding shares for ¥545,840 million in cash. As a result of the acquisition of a majority stake in Krungsri by BTMU, Krungsri has become a subsidiary of BTMU. The MUFG Group recorded goodwill of ¥217,386 million and intangible assets of ¥214,607 million. The MUFG Group also recorded noncontrolling interests of ¥202,223 million at fair value determined by a quoted market price as of the acquisition date. During the fiscal year ended March 31, 2014, the MUFG Group incurred ¥2,267 million of acquisition-related costs. These expenses are included in Other non-interest expenses in the accompanying consolidated statements of income for the fiscal year ended March 31, 2014. The results of operations of Krungsri and its subsidiaries since the acquisition date were not material to the MUFG Group for the fiscal year ended March 31, 2014.
	Krungsri is a commercial bank in Thailand offering diversified financial services while holding wide range of client base and market knowledge. As a part of a strategy designed to further develop BTMU’s businesses in Asia, the investment in Krungsri aims to establish a full-fledged commercial banking platform in Asia. The purpose of the acquisition is to strengthen the business foundation in Asia with BTMU’s existing branch in Thailand by providing comprehensive financial services for various local customers and multinational corporate customers.
	The following table summarizes the estimated fair values of the assets acquired and liabilities assumed of Krungsri and its subsidiaries as of the acquisition date:
		(in millions)
	Loans	¥	2,934,656
	Goodwill		217,386
	Intangible assets(1)		214,607
	Total assets		4,144,517
	Deposits—Total deposits		2,488,862
	Total liabilities		3,396,454
	Note:
	-1	Intangible assets primarily include ¥124,290 million of customer relationships and ¥59,891 million of core deposit intangibles with weighted average amortization periods of 11 years.
	Included in the table above are loans with fair values totaling ¥2,883,981 million, which were not subject to the guidance on loans and debt securities acquired with deteriorated credit quality. As of the acquisition date, the gross contractual amounts receivable for these loans totaled ¥2,945,857 million, of which ¥91,404 million is not expected to be collected.
	Pro forma statements of income
	The following unaudited pro forma statements of income present the result of operations as if the acquisition of Krungsri had occurred on April 1, 2012:
		Fiscal years ended March 31,
		2013		2014
		(in millions)
	Statement of income data:
	Net interest income	¥	1,967,113	¥	2,102,038
	Non-interest income—Total		2,127,990		1,903,620
	Net income attributable to Mitsubishi UFJ Financial Group		1,084,373		1,035,502
	The unaudited pro forma statements of income include the pro forma adjustments to reflect the impact of amortizing certain acquisition accounting adjustments such as intangible assets subject to amortization of ¥12,871 million and ¥16,060 million for the fiscal years ended March 31, 2013 and 2014, respectively.

Investment_Securities_Text_Blo

Investment Securities [Text Block]	12 Months Ended
	Mar. 31, 2014
Investment Securities [Text Block]	'
	3	INVESTMENT SECURITIES
	The table below presents the amortized cost, gross unrealized gains and losses and fair value of investment securities available-for-sale and being held-to-maturity at March 31, 2013 and 2014:
	At March 31, 2013:	Amortized			Gross			Gross			Fair value
		cost			unrealized			unrealized
					gains			losses
		(in millions)
	Securities available-for-sale:
	Debt securities:
	Japanese national government and Japanese government agency bonds	¥	49,159,827		¥	323,725		¥	3,598		¥	49,479,954
	Japanese prefectural and municipal bonds		207,227			9,852			4			217,075
	Foreign governments and official institutions bonds		701,504			17,814			3,022			716,296
	Corporate bonds		1,868,599			55,044			697			1,922,946
	Residential mortgage-backed securities		1,204,219			20,902			1,501			1,223,620
	Commercial mortgage-backed securities		260,057			9,895			570			269,382
	Asset-backed securities		813,312			1,132			3,766			810,678
	Other debt securities(1)		109,365			2,247			4,898			106,714
	Marketable equity securities		2,224,060			1,874,159			815			4,097,404
	Total	¥	56,548,170		¥	2,314,770		¥	18,871		¥	58,844,069
	Securities being held-to-maturity:
	Debt securities:
	Japanese national government and Japanese government agency bonds	¥	232,881		¥	1,883		¥	—		¥	234,764
	Foreign governments and official institutions bonds		284,315			2,409			—			286,724
	Corporate bonds		23,555			173			—			23,728
	Residential mortgage-backed securities		86,722			1,056	(2)		11			87,767
	Asset-backed securities		1,503,691			51,396			—	(3)		1,555,087
	Total	¥	2,131,164		¥	56,917		¥	11		¥	2,188,070
	Notes:
	-1	Other debt securities in the table above include ¥106,699 million of private placement debt conduit bonds.
	-2	The MUFG Group reclassified residential mortgage-backed securities, which totaled ¥12,356 million at fair value, from Securities available-for-sale to Securities being held-to-maturity during the fiscal year ended March 31, 2013. As a result of the reclassification, the unrealized gains before taxes at the date of reclassification remaining in Accumulated OCI in the accompanying consolidated balance sheets was ¥395 million at March 31, 2013 and not included in the table above.
	-3	MUAH reclassified collateralized loan obligations (“CLOs”), which totaled ¥111,895 million at fair value, from Securities available-for-sale to Securities being held-to-maturity during the fiscal year ended March 31, 2010. As a result of the reclassification, the unrealized losses before taxes at the date of reclassification remaining in Accumulated OCI in the accompanying consolidated balance sheets was ¥1,460 million at March 31, 2013 and not included in the table above.
	At March 31, 2014:	Amortized			Gross			Gross			Fair value
		cost			unrealized			unrealized
					gains			losses
		(in millions)
	Securities available-for-sale:
	Debt securities:
	Japanese national government and Japanese government agency bonds	¥	41,388,592		¥	201,539		¥	1,122		¥	41,589,009
	Japanese prefectural and municipal bonds		195,176			7,979			24			203,131
	Foreign governments and official institutions bonds		1,272,181			13,460			14,220			1,271,421
	Corporate bonds		1,523,026			38,920			817			1,561,129
	Residential mortgage-backed securities		1,011,644			665			31,714			980,595
	Commercial mortgage-backed securities		208,690			826			9,370			200,146
	Asset-backed securities		1,060,844			2,747			5,547			1,058,044
	Other debt securities(1)		184,495			3,650			3,199			184,946
	Marketable equity securities		2,456,992			2,384,949			4,710			4,837,231
	Total	¥	49,301,640		¥	2,654,735		¥	70,723		¥	51,885,652
	Securities being held-to-maturity:
	Debt securities:
	Japanese national government and Japanese government agency bonds	¥	214,968		¥	870		¥	—		¥	215,838
	Foreign governments and official institutions bonds		22,091			1,099			—			23,190
	Corporate bonds		5,548			7			—			5,555
	Residential mortgage-backed securities		526,431			883	(2)		7,304	(3)		520,010
	Commercial mortgage-backed securities		159,532			343			1,282	(3)		158,593
	Asset-backed securities		1,778,412			35,908			2,379			1,811,941
	Total	¥	2,706,982		¥	39,110		¥	10,965		¥	2,735,127
	Notes:
	-1	Other debt securities in the table above include ¥182,613 million of private placement debt conduit bonds.
	-2	As a result of the reclassification during the fiscal year ended March 31, 2013, the unrealized gains before taxes at the date of reclassification remaining in Accumulated OCI in the accompanying consolidated balance sheets were ¥355 million at March 31, 2014 and not included in the table above.
	-3	MUAH reclassified residential mortgage-backed securities and commercial mortgage-backed securities, which were carried at fair value of ¥273,195 million and ¥138,340 million, respectively, from Securities available-for-sale to Securities being held-to-maturity during the fiscal year ended March 31, 2014. As a result of the reclassification, the unrealized losses before taxes at the date of reclassification remaining in Accumulated OCI in the accompanying consolidated balance sheets were ¥7,702 million and ¥9,663 million, respectively, at March 31, 2014 and not included in the table above.
	Other Securities
	Investment securities other than Securities available-for-sale or being held-to-maturity (i.e., nonmarketable equity securities presented in Other investment securities) were primarily carried at cost of ¥864,052 million and ¥711,416 million at March 31, 2013 and 2014, respectively, because their fair values were not readily determinable.
	The remaining balances were investment securities held by certain subsidiaries subject to specialized industry accounting principles for investment companies and brokers and dealers and carried at fair value of ¥25,900 million and ¥26,201 million at March 31, 2013 and 2014, respectively. See Note 31 for the valuation techniques and inputs used to estimate the fair values.
	With respect to cost-method investments of ¥357,805 million and ¥159,556 million at March 31, 2013 and 2014, respectively, the MUFG Group has estimated a fair value using commonly accepted valuation techniques to determine whether the investment is impaired in each reporting period. See Note 31 for the details of these commonly accepted valuation techniques. If the fair value of the investment is less than the cost of the investment, the MUFG Group proceeds to evaluate whether the impairment is other-than-temporary.
With respect to cost-method investments of ¥506,247 million and ¥551,860 million at March 31, 2013 and 2014, respectively, the MUFG Group performed a test to determine whether any impairment indicator existed for each investment in each reporting period. If an impairment indicator exists, the MUFG Group estimates the fair value of the cost-method investment. If the fair value of the investment is less than the cost of the investment, the MUFG Group performs evaluation of whether the impairment is other-than-temporary. The primary method the MUFG Group uses to identify impairment indicators is a comparison of the MUFG Group’s share in an investee’s net assets to the cost of the MUFG Group’s investment in the investee. The MUFG Group also considers whether significant adverse changes in the regulatory, economic or technological environment have occurred with respect to the investee. The MUFG Group periodically monitors the status of each investee including the credit rating, which is generally updated once a year based on the annual financial statements of the issuer. In addition, if an event that could impact the credit rating of an investee occurs, the MUFG Group reassesses the appropriateness of the credit rating assigned to the issuer in order to maintain an updated credit rating. The MUFG Group did not estimate the fair value of those cost-method investments, which had aggregated costs of ¥503,671 million and ¥548,679 million at March 31, 2013 and 2014, respectively, since it was not practical and the MUFG Group identified no impairment indicators.
Based on the procedures described above, the MUFG Group recognized other-than-temporary impairment losses on the cost-method investment of ¥5,829 million, ¥2,364 million and ¥3,628 million for the fiscal years ended March 31, 2012, 2013 and 2014, respectively. Each impairment loss was recognized based on the specific circumstances of each individual company. No impairment loss was individually material.
Contractual Maturities
The amortized cost and fair values of debt securities being held-to-maturity and the fair values of debt securities available-for-sale at March 31, 2014 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						Available-for-sale
	Amortized			Fair value			Fair value
	cost
	(in millions)
Due in one year or less	¥	214,084		¥	214,812		¥	15,899,122
Due from one year to five years		77,117			77,455			21,777,591
Due from five years to ten years		1,403,762			1,436,763			6,414,994
Due after ten years		1,012,019			1,006,097			2,956,714
Total	¥	2,706,982		¥	2,735,127		¥	47,048,421
Realized Gains and Losses and Transfers of Investment Securities
For the fiscal years ended March 31, 2012, 2013 and 2014, gross realized gains on sales of investment securities available-for-sale were ¥233,253 million, ¥282,609 million and ¥261,384 million, respectively, and gross realized losses on sales of investment securities available-for-sale were ¥56,226 million, ¥31,906 million and ¥54,921 million, respectively.
In the second half of the fiscal year ended March 31, 2012, the MUFG Group determined that it no longer had the intent to hold a certain security, which had a carrying value of ¥7,856 million, to maturity in response to a significant deterioration in the issuer’s creditworthiness. As a result, the MUFG Group transferred from Securities being held-to-maturity to Securities available-for-sale. The MUFG Group sold all amount of such security by March 31, 2012. The realized losses resulting from the sale of the security recognized in the second half of the fiscal year ended March 31, 2012 were ¥691 million.
For the fiscal year ended March 31, 2013, the MUFG Group determined that it no longer had the intent to hold certain securities, which had a carrying value of ¥47,566 million, to maturity in response to a significant deterioration in the issuers’ creditworthiness. As a result, the MUFG Group transferred these securities from Securities being held-to-maturity to Securities available-for-sale. These securities were sold and the MUFG Group recorded a loss of ¥1,518 million for the fiscal year ended March 31, 2013.
On September 30, 2012, MUAH transferred certain CLOs with a carrying amount of ¥88,799 million from Securities being held-to-maturity to Securities available-for-sale, due to a significant increase in the risk weights of debt securities used for regulatory capital purposes under rules proposed by the U.S. federal banking agencies in June 2012. The Notices of Proposed Rulemaking (“NPRs”) would revise regulatory capital rules for U.S. Banking organizations and align them with the Basel III capital framework issued by the Basel Committee on Banking Supervision. Although the NPRs had not been formally adopted, MUAH was required to include in its 2013 annual capital plan certain capital projections pursuant to the NPRs that adversely affected the risk weights of the transferred CLOs. These regulatory capital changes were not foreseeable when MUAH initially transferred the CLOs from Securities available-for-sale to Securities being held-to-maturity during the fiscal year ended March 31, 2010. Accordingly, MUAH no longer intended to hold these securities to maturity. The carrying amount of the CLOs immediately prior to the transfer on September 30, 2012, totaled ¥88,799 million, which included ¥24,026 million of unrealized losses in unamortized OCI. Following the transfer, the securities were recorded at fair value, with an unrealized loss of ¥4,949 million recorded in OCI.
The MUFG Group transferred Securities available-for-sale of ¥12,356 million to Securities being held-to-maturity during the fiscal year ended March 31, 2013. The MUFG Group has asserted the positive intent and ability to hold these securities to maturity.
For the fiscal year ended March 31, 2014, MUAH transferred certain residential mortgage-backed securities and commercial mortgage-backed securities of ¥411,535 million from Securities available-for-sale to Securities being held-to-maturity to reduce the impact of price volatility on Accumulated OCI and in consideration of changes to regulatory capital requirements under U.S. Basel III rules.
Other-than-temporary Impairments of Securities Available-for-Sale and Being Held-to-Maturity
For the fiscal years ended March 31, 2012, 2013 and 2014, losses resulting from impairment of investment securities to reflect the decline in value considered to be other-than-temporary were ¥195,684 million, ¥124,172 million and ¥6,534 million, respectively, which were included in Investment securities gains—net in the accompanying consolidated statements of income. The losses of ¥195,684 million for the fiscal year ended March 31, 2012 included losses of ¥13,782 million from debt securities available-for-sale mainly classified as corporate bonds and ¥176,073 million from marketable equity securities. The losses of ¥124,172 million for the fiscal year ended March 31, 2013 included losses of ¥8,329 million from debt securities available-for-sale mainly classified as corporate bonds, and ¥113,479 million from marketable equity securities. The losses of ¥6,534 million for the fiscal year ended March 31, 2014 included losses of ¥2,605 million from debt securities available-for-sale mainly classified as corporate bonds, and ¥3,628 million from nonmarketable equity securities.
Gross Unrealized Losses and Fair Value
The following tables show the unrealized gross losses and fair values of investment securities available-for-sale and being held-to-maturity at March 31, 2013 and 2014 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, 2013:	Fair value			Gross			Fair value			Gross		Fair value		Gross		Number of
				unrealized						unrealized				unrealized		securities
				losses						losses				losses
	(in millions, except number of securities)
Securities available-for-sale:
Debt securities:
Japanese national government and Japanese government agency bonds	¥	6,859,342		¥	672		¥	584,048		¥	2,926	¥	7,443,390	¥	3,598		33
Japanese prefectural and municipal bonds		1,486			4			—			—		1,486		4		1
Foreign governments and official institutions bonds		157,287			2,867			11,332			155		168,619		3,022		108
Corporate bonds		76,521			306			56,953			391		133,474		697		1,360
Residential mortgage-backed securities		102,511			276			25,766			1,225		128,277		1,501		182
Commercial mortgage-backed securities		58,459			530			12,134			40		70,593		570		24
Asset-backed securities		17,239			37			85,069			3,729		102,308		3,766		131
Other debt securities		71,217			4,898			—			—		71,217		4,898		49
Marketable equity securities		15,143			694			870			121		16,013		815		23
Total	¥	7,359,205		¥	10,284		¥	776,172		¥	8,587	¥	8,135,377	¥	18,871		1,911
Securities being held-to-maturity:
Debt securities:
Residential mortgage-backed securities	¥	3,370		¥	11		¥	—		¥	—	¥	3,370	¥	11		10
Total	¥	3,370		¥	11		¥	—		¥	—	¥	3,370	¥	11		10
	Less than 12 months						12 months or more					Total
At March 31, 2014:	Fair value			Gross			Fair value			Gross		Fair value		Gross		Number of
				unrealized						unrealized				unrealized		securities
				losses						losses				losses
	(in millions, except number of securities)
Securities available-for-sale:
Debt securities:
Japanese national government and Japanese government agency bonds	¥	10,469,832		¥	1,122			—			—	¥	10,469,832	¥	1,122		49
Japanese prefectural and municipal bonds		12,555			24			—			—		12,555		24		6
Foreign governments and official institutions bonds		527,706			9,084			110,015			5,136		637,721		14,220		150
Corporate bonds		136,296			709			29,242			108		165,538		817		815
Residential mortgage-backed securities		904,239			31,094			28,406			620		932,645		31,714		431
Commercial mortgage-backed securities		135,014			8,427			8,235			943		143,249		9,370		155
Asset-backed securities		213,683			5,518			1,078			29		214,761		5,547		103
Other debt securities		46,835			1,203			68,630			1,996		115,465		3,199		51
Marketable equity securities		175,884			4,692			1			18		175,885		4,710		42
Total	¥	12,622,044		¥	61,873		¥	245,607		¥	8,850	¥	12,867,651	¥	70,723		1,802
Securities being held-to-maturity:
Debt securities:
Residential mortgage-backed securities	¥	408,244		¥	7,187		¥	5,681		¥	117	¥	413,925	¥	7,304		198
Commercial mortgage-backed securities		107,048			1,033			51,545			249		158,593		1,282		28
Asset-backed securities		500,695			2,379			—			—		500,695		2,379		22
Total	¥	1,015,987		¥	10,599		¥	57,226		¥	366	¥	1,073,213	¥	10,965		248
Evaluating Investment Securities for Other-than-temporary Impairments
The following describes the nature of the MUFG Group’s investments and the conclusions reached in determining whether the unrealized losses were temporary or other-than-temporary.
Japanese national government and Japanese government agency bonds, Foreign governments and official institutions bonds
As of March 31, 2014, 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. The MUFG Group expects to recover the entire amortized cost basis of these securities. Accordingly, such changes are considered to be temporary and no impairment loss has been recorded.
Residential and commercial mortgage-backed securities
As of March 31, 2014, 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, such changes are considered to be temporary and no impairment loss has been recorded.
Asset-backed securities
As of March 31, 2014, unrealized losses on these securities are 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 other-than-temporary impairment. Based on the analysis performed no other-than-temporary impairment was identified as of March 31, 2014 and no impairment loss was therefore recorded.
Corporate bonds
As of March 31, 2014, the unrealized losses associated with corporate bonds are 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 a loss given default.
The following table presents a roll-forward of the credit loss component recognized in earnings. The balance at the beginning of each fiscal year represents the credit loss component for which an other-than-temporary impairment occurred on debt securities in prior periods. The additions represent the first time a debt security was credit impaired or when subsequent credit impairment has occurred. The credit loss component is reduced when the corporate bonds mature or are sold. Additionally, the credit loss component is reduced if the MUFG Group receives or expects to receive cash flows in excess of what the MUFG Group previously expected to receive over the remaining life of the credit impaired debt securities.
	2012			2013			2014
	(in millions)
Balance at beginning of fiscal year	¥	35,458		¥	30,066		¥	24,525
Additions:
Initial credit impairments		8,596			5,347			1,466
Subsequent credit impairments		5,186			2,982			1,139
Reductions:
Securities sold or matured		(19,174	)		(13,870	)		(14,574	)
Balance at end of fiscal year	¥	30,066		¥	24,525		¥	12,556
The cumulative decline in fair value of the credit impaired debt securities, which were mainly corporate bonds, held at March 31, 2013 and 2014 was ¥13,047 million and ¥4,933 million, respectively. Of which, the credit loss component recognized in earnings was ¥24,525 million and ¥12,556 million, and the remaining amount related to all other factors recognized in Accumulated OCI before taxes was ¥11,479 million and ¥7,625 million at March 31, 2013 and 2014, respectively.
Other debt securities
As of March 31, 2014, other debt securities primarily consist of private placement debt conduit bonds, which are not rated by external credit rating agencies. The unrealized losses on these bonds resulted from a higher return on capital expected by the secondary market compared with the return on capital required at the time of origination when the bonds were purchased. The MUFG Group estimated loss projections for each security by assessing the underlying collateral of each security. The MUFG Group estimates the portion of loss attributable to credit based on the expected cash flows of the underlying collateral using estimates of current key assumptions such as probability of default and loss severity. Cash flow analysis of the underlying collateral provides an estimate of other-than-temporary impairment, which is performed when the fair value of a security is lower than its amortized cost and potential impairment is identified. Based on the analysis, no other-than-temporary impairment loss was recorded in the accompanying consolidated statements of income.
Marketable equity securities
The MUFG Group determines whether unrealized losses on marketable equity securities are temporary based on its ability and positive intent to hold the investments for a period of time sufficient to allow for any anticipated recovery and the results of its review conducted to identify and evaluate investments that have indications of possible impairment. Impairment is evaluated considering various factors, and their relative significance varies from case to case. The MUFG Group’s review includes, but is not limited to, consideration of the following factors:
The length of time that fair value of the investment has been below cost—The MUFG Group generally deems a continued decline of fair value below cost for six months or more to be other-than-temporary.
The extent to which the fair value of investments has been below cost as of the end of the reporting period—The MUFG Group’s investment portfolio is exposed to volatile equity prices affected by many factors including investors’ perspectives as to future economic prospects and the issuers’ performance. The MUFG Group generally deems the decline in fair value below cost of 20% or more as an indicator of an other-than-temporary decline in fair value.
The financial condition and near-term prospects of the issuer—The MUFG Group considers the financial condition and near-term prospects of the issuer primarily based on the credit standing of the issuers as determined by its credit rating system.
At March 31, 2014, unrealized losses on marketable equity securities which have been in a continuous loss position are considered temporary based on the evaluation as described above, and the fact that the MUFG Group primarily makes these investments for strategic purposes to maintain long-term relationships with its customers.

Loans_And_Allowance_For_Credit

Loans And Allowance For Credit Losses [Text Block]	12 Months Ended
	Mar. 31, 2014
Loans And Allowance For Credit Losses [Text Block]	'
	4	LOANS AND ALLOWANCE FOR CREDIT LOSSES
	Loans at March 31, 2013 and 2014 by domicile and industry of the borrower are summarized below. Classification of loans by industry is based on the industry segment loan classifications as defined by the Bank of Japan.
		2013			2014
		(in millions)
	Domestic:
	Manufacturing	¥	11,767,352		¥	11,540,753
	Construction		1,056,276			980,877
	Real estate		11,143,777			10,989,562
	Services		2,881,666			2,693,561
	Wholesale and retail		8,330,553			8,475,143
	Banks and other financial institutions(1)		3,622,021			3,985,106
	Communication and information services		1,314,505			1,443,466
	Other industries		12,191,566			13,496,763
	Consumer		17,132,396			16,921,352
	Total domestic		69,440,112			70,526,583
	Foreign:
	Governments and official institutions		673,548			811,475
	Banks and other financial institutions(1)		7,258,978			9,792,255
	Commercial and industrial		18,738,731			24,533,816
	Other		2,601,338			4,872,372
	Total foreign		29,272,595			40,009,918
	Unearned income, unamortized premiums—net and deferred loan fees—net		(122,478	)		(260,090	)
	Total(2)	¥	98,590,229		¥	110,276,411
	Notes:
	-1	Loans to the so-called non-bank finance companies are generally included in the “Banks and other financial institutions” category. Non-bank finance companies are primarily engaged in consumer lending, factoring and credit card businesses.
	-2	The above table includes loans held for sale of ¥35,261 million and ¥46,635 million at March 31, 2013 and 2014, respectively, which are carried at the lower of cost or estimated fair value.
	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 nonaccrual status of loans by class at March 31, 2013 and 2014 is shown below:
		2013			2014
		(in millions)
	Commercial
	Domestic	¥	911,700		¥	737,896
	Manufacturing		211,975			167,859
	Construction		37,381			30,093
	Real estate		185,597			141,974
	Services		85,987			72,059
	Wholesale and retail		249,251			211,770
	Banks and other financial institutions		13,993			7,234
	Communication and information services		31,941			24,956
	Other industries		42,513			35,959
	Consumer		53,062			45,992
	Foreign-excluding MUAH and Krungsri		98,085			82,617
	Residential		130,830			111,252
	Card		88,045			72,483
	MUAH		43,670			46,574
	Krungsri		—			25,973
	Total(1)	¥	1,272,330		¥	1,076,795
	Note:
	-1	The above table does not include loans held for sale of ¥818 million and nil at March 31, 2013 and 2014, respectively, and loans acquired with deteriorated credit quality of ¥21,965 million and ¥38,651 million at March 31, 2013 and 2014, respectively.
	Impaired Loans
	The MUFG Group’s impaired loans primarily include nonaccrual loans and TDRs. The following table shows information about impaired loans by class at March 31, 2013 and 2014:
		Recorded Loan Balance
	At March 31, 2013:	Requiring			Not Requiring			Total(2)		Unpaid			Related
		an Allowance for			an Allowance for					Principal			Allowance for
		Credit Losses			Credit Losses(1)					Balance			Credit Losses
		(in millions)
	Commercial
	Domestic	¥	1,158,927		¥	318,028		¥	1,476,955	¥	1,537,180		¥	662,347
	Manufacturing		400,946			55,819			456,765		475,946			221,124
	Construction		35,581			16,921			52,502		59,411			22,577
	Real estate		139,146			100,670			239,816		247,657			55,286
	Services		122,792			37,774			160,566		166,510			67,171
Wholesale and retail		309,892			62,274			372,166		380,292			209,634
Banks and other financial institutions		15,201			121			15,322		17,425			8,040
Communication and information services		40,233			12,954			53,187		55,021			23,719
Other industries		42,991			9,794			52,785		53,754			33,485
Consumer		52,145			21,701			73,846		81,164			21,311
Foreign-excluding MUAH		199,890			299			200,189		200,517			122,371
Loans acquired with deteriorated credit quality		30,927			76			31,003		47,916			9,944
Residential		300,231			13,756			313,987		363,439			118,753
Card		123,567			806			124,373		139,196			37,901
MUAH		31,293			22,966			54,259		60,732			3,645
Total(4)	¥	1,844,835		¥	355,931		¥	2,200,766	¥	2,348,980		¥	954,961
	Recorded Loan Balance
At March 31, 2014:	Requiring			Not Requiring			Total(2)		Unpaid			Related
	an Allowance for			an Allowance for					Principal			Allowance for
	Credit Losses			Credit Losses(1)					Balance			Credit Losses
	(in millions)
Commercial
Domestic	¥	1,006,333		¥	257,215		¥	1,263,548	¥	1,312,320		¥	544,224
Manufacturing		368,866			55,003			423,869		431,745			181,389
Construction		30,537			13,298			43,835		45,323			18,731
Real estate		141,225			63,625			204,850		212,353			52,814
Services		101,969			27,342			129,311		139,299			54,469
Wholesale and retail		248,932			58,633			307,565		317,614			169,523
Banks and other financial institutions		8,295			94			8,389		8,403			6,954
Communication and information services		25,443			11,509			36,952		39,292			16,473
Other industries		36,821			9,634			46,455		47,866			26,903
Consumer		44,245			18,077			62,322		70,425			16,968
Foreign-excluding MUAH and Krungsri		193,360			2,360			195,720		195,935			96,218
Loans acquired with deteriorated credit quality		18,787			186			18,973		32,078			6,111
Residential		203,600			11,563			215,163		255,627			70,393
Card		102,852			762			103,614		115,819			29,244
MUAH		39,552			24,457			64,009		71,210			4,131
Krungsri(3)		—			—			—		—			—
Total(4)	¥	1,564,484		¥	296,543		¥	1,861,027	¥	1,982,989		¥	750,321
Notes:
-1	These loans do not require an allowance for credit losses because the fair values of the impaired loans equal or exceed the recorded investments in the loans.
-2	Included in impaired loans at March 31, 2013 and 2014 are accrual TDRs as follows: ¥671,083 million and ¥642,408 million—Commercial; ¥ 178,576 million and ¥99,359 million—Residential; ¥61,195 million and ¥51,834 million—Card; and ¥34,769million and ¥38,666 million—MUAH, respectively.
-3	For the Krungsri segment, acquired loans were recorded at their fair values as of the acquisition date, and there have been no indications that allowance for credit loss is necessary for these loans since then. Therefore, no impaired loans were stated in the above table.
-4	In addition to impaired loans presented in the above table, there were loans held for sale that were impaired of ¥818 million and nil at March 31, 2013 and 2014, respectively.
The following table shows information regarding the average recorded loan balance and recognized interest income on impaired loans for the fiscal years ended March 31, 2012, 2013 and 2014:
	Fiscal years ended March 31,
	2012						2013					2014
	Average			Recognized			Average		Recognized			Average			Recognized
	Recorded Loan			Interest			Recorded Loan		Interest			Recorded Loan			Interest
	Balance			Income			Balance		Income			Balance			Income
	(in millions)
Commercial
Domestic	¥	1,270,856		¥	21,356		¥	1,414,309	¥	24,051		¥	1,359,635		¥	23,283
Manufacturing		333,409			5,656			418,402		7,017			430,415			6,954
Construction		63,215			1,370			54,687		1,174			47,818			982
Real estate		173,739			2,476			198,102		2,747			228,045			3,472
Services		176,047			3,203			170,025		3,214			140,627			2,806
Wholesale and retail		326,440			5,239			376,001		6,215			339,619			5,857
Banks and other financial institutions		9,812			85			11,506		162			10,719			170
Communication and information services		55,387			1,152			51,897		1,061			44,417			945
Other industries		57,612			927			58,081		1,271			49,612			985
Consumer		75,195			1,248			75,608		1,190			68,363			1,112
Foreign-excluding MUAH and Krungsri		138,900			1,016			172,471		2,487			187,656			2,848
Loans acquired with deteriorated credit quality		35,307			1,983			32,964		2,028			30,101			1,659
Residential		318,512			6,549			320,183		6,006			264,277			5,153
Card		149,255			6,972			135,581		6,504			113,993			5,218
MUAH		45,297			1,354			46,957		1,720			60,943			3,468
Krungsri		—			—			—		—			—			—
Total	¥	1,958,127		¥	39,230		¥	2,122,465	¥	42,796		¥	2,016,605		¥	41,629
Interest income on nonaccrual loans for all classes was recognized on a cash basis when ultimate collectibility of principal was certain. Otherwise, cash receipts were applied as principal reductions. Interest income on accruing impaired loans, including TDRs, was recognized on an accrual basis to the extent that the collectibility of interest income was reasonably certain based on management’s assessment.
The following table shows a rollforward of accrual TDRs and other impaired loans (including nonaccrual TDRs) for the fiscal years ended March 31, 2013 and 2014:
	Fiscal years ended March 31,
	2013			2014
	(in millions)
Accrual TDRs:
Balance at beginning of fiscal year	¥	892,823		¥	945,623
Additions (new accrual TDR status)		302,267			231,063
Transfers to other impaired loans (including nonaccrual TDRs)		(56,064	)		(48,295	)
Loans sold		(49	)		(7,698	)
Principal payments and other		(193,354	)		(288,426	)
Balance at end of fiscal year	¥	945,623		¥	832,267
Other impaired loans (including nonaccrual TDRs):
Balance at beginning of fiscal year	¥	1,139,045		¥	1,255,143
Additions (new other impaired loans (including nonaccrual TDRs) status)(1)		500,063			313,086
Charge-off		(46,835	)		(123,037	)
Transfers to accrual TDRs		(28,474	)		(63,828	)
Loans sold		(18,618	)		(39,879	)
Principal payments and other		(290,038	)		(312,725	)
Balance at end of fiscal year	¥	1,255,143		¥	1,028,760
Note:
-1	Included in additions of other impaired loans for the fiscal years ended March 31, 2013 and 2014 are nonaccrual TDRs as follows: ¥16,903 million and ¥11,054 million—Card; and ¥17,513 million and ¥16,228 million—MUAH, respectively.
Troubled Debt Restructurings
The following tables summarize the MUFG Group’s TDRs by class during the fiscal years ended March 31, 2013 and 2014 and outstanding recorded investment balances of TDRs by class at March 31, 2013 and 2014:
	Fiscal year ended March 31, 2013								At March 31,
									2013
	Troubled Debt						Troubled Debt Restructurings		Troubled Debt
	Restructurings(4)						That Subsequently Defaulted		Restructurings
	Pre-			Post-			Recorded		Outstanding
	Modification			Modification			Investment		recorded
	Outstanding			Outstanding					investment
	Recorded			Recorded					balances(2)
	Investment			Investment
	(in millions)
Commercial(1)(3)
Domestic	¥	222,125		¥	222,125		¥	6,741	¥	567,926
Manufacturing		131,105			131,105			2,729		247,133
Construction		3,921			3,921			—		15,130
Real estate		17,409			17,409			1,444		54,221
Services		12,564			12,564			295		74,777
Wholesale and retail		42,061			42,061			1,024		122,986
Banks and other financial institutions		889			889			330		1,329
Communication and information services		8,442			8,442			434		21,246
Other industries		1,927			1,927			415		10,321
Consumer		3,807			3,807			70		20,783
Foreign-excluding MUAH		10,142			10,142			419		103,157
Loans acquired with deteriorated credit quality		524			524			509		—
Residential(1)(3)		50,005			50,005			349		178,576
Card(2)(3)		26,409			26,055			4,507		124,373
MUAH(2) (3)		30,091			27,832			2,155		52,848
Total	¥	339,296		¥	336,683		¥	14,680	¥	1,026,880
Notes:
-1	TDRs for the Commercial and Residential segments include accruing loans with concessions granted, and do not include nonaccrual loans with concessions granted.
-2	TDRs for the Card and MUAH segments include accrual and nonaccrual loans. Included in the outstanding recorded investment balances as of March 31, 2013 are nonaccrual TDRs as follows: ¥63,178 million—Card and ¥18,079 million—MUAH, respectively.
-3	For the fiscal year ended March 31, 2013, extension of the stated maturity date of loans was the primary concession type in the Commercial and Residential segments, whereas reduction in the stated rate and payment deferrals were the primary concession types in the Card and MUAH segments, respectively.
-4	From the fiscal year ended March 31, 2014, the MUFG Group started to report the amounts of TDRs which include only the first modification for those which are modified more than once during the same period, in place of the previously reported amounts which include accumulated loan modification activity, such as reduction in stated rate or extension of stated maturity date, that may occur on multiple occasions during the same period. The amounts for the fiscal year ended March 31, 2013 were revised to conform to the current year presentation and enable comparisons between the relevant amounts for the fiscal years ended March 31, 2013 and 2014, respectively.
	Fiscal year ended March 31, 2014								At March 31,
									2014
	Troubled Debt						Troubled Debt Restructurings		Troubled Debt
	Restructurings(4)						That Subsequently Defaulted		Restructurings
	Pre-			Post-			Recorded		Outstanding
	Modification			Modification			Investment		recorded
	Outstanding			Outstanding					investment
	Recorded			Recorded					balances(2)
	Investment			Investment
	(in millions)
Commercial(1)(3)
Domestic	¥	175,011		¥	151,505		¥	22,503	¥	528,133
Manufacturing		93,968			70,462			11,644		257,049
Construction		3,435			3,435			86		13,751
Real estate		21,977			21,977			1,174		64,028
Services		13,149			13,149			1,481		57,480
Wholesale and retail		32,458			32,458			5,834		95,809
Banks and other financial institutions		1			1			—		1,156
Communication and information services		1,802			1,802			1,639		11,996
Other industries		4,414			4,414			152		10,496
Consumer		3,807			3,807			493		16,368
Foreign-excluding MUAH and Krungsri		20,175			20,175			—		114,275
Loans acquired with deteriorated credit quality		7,616			7,616			—		—
Residential(1)(3)		32,777			32,777			474		99,359
Card(2)(3)		17,141			16,869			4,015		103,614
MUAH(2)(3)		29,945			29,403			2,912		62,363
Krungsri(2)		—			—			—		—
Total	¥	282,665		¥	258,345		¥	29,904	¥	907,744
Notes:
-1	TDRs for the Commercial and Residential segments include accruing loans with concessions granted, and do not include nonaccrual loans with concessions granted.
-2	TDRs for the Card, MUAH and Krungsri segments include accrual and nonaccrual loans. Included in the outstanding recorded investment balances as of March 31, 2014 are nonaccrual TDRs as follows: ¥51,780 million—Card and ¥23,697 million—MUAH, respectively.
-3	For the fiscal year ended March 31, 2014, extension of the stated maturity date of loans was the primary concession type in the Commercial and Residential segments, whereas reduction in the stated rate and payment deferrals were the primary concession types in the Card and MUAH segments, respectively.
-4	From the fiscal year ended March 31, 2014, the MUFG Group started to report the amounts of TDRs which include only the first modification for those which are modified more than once during the same period, in place of the previously reported amounts which include accumulated loan modification activity, such as reduction in stated rate or extension of stated maturity date, that may occur on multiple occasions during the same period.
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. Those loans are also considered impaired loans, and hence the allowance for credit losses is separately established for each loan. As a result, the amount of allowance for credit losses increases in many cases upon classification as a TDR loan. 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, and the impact of write-offs associated with TDRs on the MUFG Group’s results of operations for the fiscal years ended March 31, 2013 and 2014 was not material.
TDRs for the Commercial and Residential segments in the above table include accruing loans with concessions granted, and do not include nonaccrual loans with concessions granted. 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 of the above table includes 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 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.
Regarding the Card, MUAH and Krungsri segments, the TDRs in the above table represent modified nonaccrual and accruing loans, and the defaulted loans in the above table represent nonaccruing 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 ¥10,662 million and ¥44,116 million at March 31, 2013 and 2014, respectively. See Note 24 for further discussion of commitments to extend credit.
Credit Quality Indicator
Credit quality indicators of loans by class at March 31, 2013 and 2014 are shown below:
At March 31, 2013:	Normal			Close			Likely to become		Total(1)
				Watch			Bankrupt or
							Legally/Virtually
							Bankrupt
	(in millions)
Commercial
Domestic	¥	48,099,471		¥	4,476,760		¥	911,868	¥	53,488,099
Manufacturing		10,062,399			1,481,403			211,975		11,755,777
Construction		797,513			220,465			37,381		1,055,359
Real estate		9,570,082			898,619			185,678		10,654,379
Services		2,417,737			362,719			85,987		2,866,443
Wholesale and retail		7,297,267			747,938			249,253		8,294,458
Banks and other financial institutions		3,239,735			367,189			13,993		3,620,917
Communication and information services		1,183,208			98,722			31,941		1,313,871
Other industries		11,951,463			192,291			42,592		12,186,346
Consumer		1,580,067			107,414			53,068		1,740,549
Foreign-excluding MUAH		22,340,927			1,530,191			89,832		23,960,950
Loans acquired with deteriorated credit quality		30,972			52,007			18,334		101,313
Total	¥	70,471,370		¥	6,058,958		¥	1,020,034	¥	77,550,362
	Accrual			Nonaccrual			Total(1)
	(in millions)
Residential	¥	15,067,823		¥	133,410		¥	15,201,233
Card	¥	582,510		¥	89,095		¥	671,605
	Credit Quality Based on						Credit Quality Based on
	the Number of Delinquencies						Internal Credit Ratings
	Accrual			Nonaccrual			Pass		Special			Classified			Total(1)(2)
									Mention
	(in millions)
MUAH	¥	2,260,777		¥	31,342		¥	2,745,365	¥	69,437		¥	80,433		¥	5,187,354
At March 31, 2014:	Normal			Close Watch			Likely to become		Total(1)
							Bankrupt or
							Legally/Virtually
							Bankrupt
	(in millions)
Commercial
Domestic	¥	50,608,911		¥	3,549,135		¥	737,692	¥	54,895,738
Manufacturing		10,032,892			1,329,356			167,859		11,530,107
Construction		786,640			163,313			30,093		980,046
Real estate		9,747,076			716,302			141,774		10,605,152
Services		2,279,379			328,142			72,059		2,679,580
Wholesale and retail		7,582,548			651,659			211,770		8,445,977
Banks and other financial institutions		3,959,266			18,494			7,234		3,984,994
Communication and information services		1,349,217			68,863			24,956		1,443,036
Other industries		13,274,021			182,727			36,054		13,492,802
Consumer		1,597,872			90,279			45,893		1,734,044
Foreign-excluding MUAH and Krungsri		28,399,163			1,132,038			84,849		29,616,050
Loans acquired with deteriorated credit quality		32,430			33,100			10,210		75,740
Total	¥	79,040,504		¥	4,714,273		¥	832,751	¥	84,587,528
	Accrual			Nonaccrual			Total(1)
	(in millions)
Residential	¥	14,864,856		¥	113,449		¥	14,978,305
Card	¥	535,511		¥	73,110		¥	608,621
	Credit Quality Based on						Credit Quality Based on
	the Number of Delinquencies						Internal Credit Ratings
	Accrual			Nonaccrual			Pass		Special			Classified			Total(1)(2)
									Mention
	(in millions)
MUAH	¥	3,003,826		¥	34,989		¥	3,946,961	¥	98,645		¥	95,167		¥	7,179,588
	Normal		Special	Substandard or		Total(1)
			Mention	Doubtful or
				Doubtful
				of Loss
	(in millions)
Krungsri	¥2,923,087		¥101,184	¥51,590		¥3,075,861
Notes:
-1	Total loans in the above table do not include loans held for sale.
-2	Total loans of MUAH do not include Federal Deposit Insurance Corporation (“FDIC”) covered loans and small business loans which are not individually rated totaling ¥66,892 million and ¥59,963 million as of March 31, 2013 and 2014, respectively. The MUFG Group will be reimbursed for a substantial portion of any future losses on FDIC covered loans under the terms of the FDIC loss share agreements.
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 consumer loans within the MUAH 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 Normal, Special mention, Substandard, Doubtful, and Doubtful of loss primarily based on their delinquency status. Loans categorized as Special mention generally represent those that have the overdue principal or interest payments for a cumulative period exceeding one month commencing from the contractual due date. Loans categorized as Substandard, Doubtful or Doubtful of loss generally represent those that have the overdue principal or interest payments for a cumulative period exceeding three months commencing from the contractual due date.
For the Commercial, Residential and Card segments, credit quality indicators are based on information as of March 31. For the MUAH and Krungsri segment, credit quality indicators are generally based on information as of December 31.
Past Due Analysis
Ages of past due loans by class at March 31, 2013 and 2014 are shown below:
At March 31, 2013:	1-3 months			Greater			Total		Current			Total			Recorded
	Past Due			Than			Past Due					Loans(1)(2)			Investment>
				3 months											90 Days and
															Accruing
	(in millions)
Commercial
Domestic	¥	45,915		¥	84,823		¥	130,738	¥	53,357,361		¥	53,488,099		¥	7,545
Manufacturing		6,963			15,307			22,270		11,733,507			11,755,777			24
Construction		2,118			1,881			3,999		1,051,360			1,055,359			37
Real estate		5,339			15,071			20,410		10,633,969			10,654,379			2,255
Services		12,215			7,537			19,752		2,846,691			2,866,443			80
Wholesale and retail		10,106			24,050			34,156		8,260,302			8,294,458			82
Banks and other financial institutions		—			72			72		3,620,845			3,620,917			2
Communication and information services		2,286			2,835			5,121		1,308,750			1,313,871			12
Other industries		1,592			6,809			8,401		12,177,945			12,186,346			11
Consumer		5,296			11,261			16,557		1,723,992			1,740,549			5,042
Foreign-excluding MUAH		19,806			17,686			37,492		23,923,458			23,960,950			206
Residential		91,148			55,132			146,280		15,037,723			15,184,003			32,918
Card		23,680			39,796			63,476		594,896			658,372			—
MUAH		30,736			17,922			48,658		5,102,991			5,151,649			69
Total	¥	211,285		¥	215,359		¥	426,644	¥	98,016,429		¥	98,443,073		¥	40,738
At March 31, 2014:	1-3 months			Greater			Total		Current			Total			Recorded
	Past Due			Than			Past Due					Loans(1)(2)			Investment>
				3 months											90 Days and
															Accruing
	(in millions)
Commercial
Domestic	¥	26,210		¥	53,632		¥	79,842	¥	54,815,896		¥	54,895,738		¥	6,543
Manufacturing		5,363			7,192			12,555		11,517,552			11,530,107			—
Construction		718			664			1,382		978,664			980,046			1
Real estate		4,859			9,689			14,548		10,590,604			10,605,152			2,233
Services		4,315			2,781			7,096		2,672,484			2,679,580			10
Wholesale and retail		4,624			22,829			27,453		8,418,524			8,445,977			3
Banks and other financial institutions		1			52			53		3,984,941			3,984,994			—
Communication and information services		680			1,371			2,051		1,440,985			1,443,036			—
Other industries		667			1,554			2,221		13,490,581			13,492,802			—
Consumer		4,983			7,500			12,483		1,721,561			1,734,044			4,296
Foreign-excluding MUAH and Krungsri		3,283			7,109			10,392		29,605,658			29,616,050			357
Residential		85,549			54,462			140,011		14,822,995			14,963,006			40,500
Card		21,653			33,381			55,034		540,886			595,920			—
MUAH		30,036			14,333			44,369		7,078,621			7,122,990			527
Krungsri		66,871			22,121			88,992		2,936,194			3,025,186			—
Total	¥	233,602		¥	185,038		¥	418,640	¥	109,800,250		¥	110,218,890		¥	47,927
Notes:
-1	Total loans in the above table do not include loans held for sale and loans acquired with deteriorated credit quality.
-2	Total loans of MUAH do not include ¥2,039 million and ¥1,600 million of FDIC covered loans at March 31, 2013 and 2014, respectively, which are not subject to the guidance on loans and debt securities acquired with deteriorated credit quality.
Allowance for Credit Losses
Changes in the allowance for credit losses by portfolio segment for the fiscal years ended March 31, 2012, 2013 and 2014 are shown below:
Fiscal year ended March 31, 2012:	Commercial			Residential			Card		MUAH			Total
	(in millions)
Allowance for credit losses:
Balance at beginning of fiscal year:	¥	895,611		¥	165,215		¥	82,607	¥	97,023		¥	1,240,456
Provision (credit) for credit losses		181,449			29,481			27,883		(15,004	)		223,809
Charge-offs		126,157			23,075			43,073		24,494			216,799
Recoveries		36,043			216			1,486		5,684			43,429
Net charge-offs		90,114			22,859			41,587		18,810			173,370
Others(1)		(2,638	)		—			—		(2,750	)		(5,388	)
Balance at end of fiscal year	¥	984,308		¥	171,837		¥	68,903	¥	60,459		¥	1,285,507
Fiscal year ended March 31, 2013:	Commercial			Residential			Card		MUAH			Total
	(in millions)
Allowance for credit losses:
Balance at beginning of fiscal year:	¥	984,308		¥	171,837		¥	68,903	¥	60,459		¥	1,285,507
Provision for credit losses		127,874			1,302			12,379		2,987			144,542
Charge-offs		80,534			16,283			32,135		15,585			144,537
Recoveries		23,410			353			2,723		5,189			31,675
Net charge-offs		57,124			15,930			29,412		10,396			112,862
Others(1)		13,405			—			—		5,395			18,800
Balance at end of fiscal year	¥	1,068,463		¥	157,209		¥	51,870	¥	58,445		¥	1,335,987
Fiscal year ended March 31, 2014:	Commercial			Residential			Card		MUAH			Krungsri(2)			Total
	(in millions)
Allowance for credit losses:
Balance at beginning of fiscal year:	¥	1,068,463		¥	157,209		¥	51,870	¥	58,445		¥	—		¥	1,335,987
Provision (credit) for credit losses		(70,091	)		(35,952	)		5,617		(5,945	)		—			(106,371	)
Charge-offs		158,875			4,577			20,125		7,521			—			191,098
Recoveries		29,478			230			3,264		4,378			—			37,350
Net charge-offs		129,397			4,347			16,861		3,143			—			153,748
Others(1)		7,882			3			—		10,667			—			18,552
Balance at end of fiscal year	¥	876,857		¥	116,913		¥	40,626	¥	60,024		¥	—		¥	1,094,420
Notes:
-1	Others are principally comprised of gains or losses from foreign exchange translation.
-2	For the Krungsri segment, the acquired loans were recorded at their fair values as of the acquisition date, and there have been no indications that allowance for credit loss is necessary for these loans since then. Therefore, no allowance for credit loss was stated in the above table.
Allowance for credit losses and recorded investment in loans by portfolio segment at March 31, 2013 and 2014 are shown below:
At March 31, 2013:	Commercial			Residential			Card		MUAH			Total
	(in millions)
Allowance for credit losses:
Individually evaluated for impairment	¥	784,718		¥	117,670		¥	37,901	¥	3,645		¥	943,934
Collectively evaluated for impairment		248,798			37,360			13,809		54,705			354,672
Loans acquired with deteriorated credit quality		34,947			2,179			160		95			37,381
Total	¥	1,068,463		¥	157,209		¥	51,870	¥	58,445		¥	1,335,987
Loans:
Individually evaluated for impairment	¥	1,677,144		¥	309,408		¥	123,519	¥	54,259		¥	2,164,330
Collectively evaluated for impairment		75,771,905			14,874,595			534,853		5,099,429			96,280,782
Loans acquired with deteriorated credit quality		101,313			17,230			13,233		100,558			232,334
Total(1)	¥	77,550,362		¥	15,201,233		¥	671,605	¥	5,254,246		¥	98,677,446
At March 31, 2014:	Commercial			Residential			Card		MUAH			Krungsri(2)			Total
	(in millions)
Allowance for credit losses:
Individually evaluated for impairment	¥	640,442		¥	69,613		¥	29,244	¥	4,131		¥	—		¥	743,430
Collectively evaluated for impairment		209,117			45,355			11,312		55,777			—			321,561
Loans acquired with deteriorated credit quality		27,298			1,945			70		116			—			29,429
Total	¥	876,857		¥	116,913		¥	40,626	¥	60,024		¥	—		¥	1,094,420
Loans:
Individually evaluated for impairment	¥	1,459,268		¥	211,802		¥	102,930	¥	64,009		¥	—		¥	1,838,009
Collectively evaluated for impairment		83,052,520			14,751,204			492,990		7,060,581			3,025,186			108,382,481
Loans acquired with deteriorated credit quality		75,740			15,299			12,701		114,961			50,675			269,376
Total(1)	¥	84,587,528		¥	14,978,305		¥	608,621	¥	7,239,551		¥	3,075,861		¥	110,489,866
Notes:
-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.
-2	For the Krungsri segment, acquired loans were recorded at their fair values as of the acquisition date, and there have been no indications that allowance for credit loss is necessary for these loans since then. Therefore, no allowance for credit loss was stated in the above table.
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 in the allowance for credit losses due to loan disposal activity amounting to ¥1.2 billion, ¥0.4 billion and ¥16.2 billion for the fiscal years ended March 31, 2012, 2013 and 2014, respectively.
The MUFG Group sold ¥706 billion, ¥884 billion and ¥906 billion of loans within the Commercial segment during the fiscal years ended March 31, 2012, 2013 and 2014, respectively.
The MUFG Group purchased ¥337 billion of loans within the MUAH segment during the fiscal year ended March 31, 2014. See Note 2 for MUB’s acquisition of PB Capital Corporation’s institutional CRE lending division.
Loans Acquired in a Transfer
In accordance with the guidance on loans and debt securities acquired with deteriorated credit quality, the following table sets forth information regarding loans acquired in connection with mergers, for which it is probable, at acquisition, that the MUFG Group will be unable to collect all contractually required payments receivable.
	2013			2014
	(in millions)
Loans acquired during the fiscal year:
Contractually required payments receivable at acquisitions	¥	117,468		¥	186,268
Cash flows expected to be collected at acquisitions		77,417			116,218
Fair value of loans at acquisition		63,731			93,845
Accretable yield for loans within the scope of the guidance on loans and debt securities acquired with deteriorated credit quality:
Balance at beginning of fiscal year	¥	86,877		¥	95,178
Additions		13,686			22,373
Accretion		(39,981	)		(49,155	)
Disposals		—			—
Reclassifications from nonaccretable difference		29,721			15,760
Foreign currency translation adjustments		4,875			9,465
Balance at end of fiscal year	¥	95,178		¥	93,621
Loans within the scope of the guidance on loans and debt securities acquired with deteriorated credit quality:
Outstanding balance at beginning of fiscal year	¥	493,111		¥	497,265
Outstanding balance at end of fiscal year		497,265			531,327
Carrying amount at beginning of fiscal year		212,702			232,334
Carrying amount at end of fiscal year		232,334			269,376
Nonaccruing loans within the scope of the guidance on loans and debt securities acquired with deteriorated credit quality:
Carrying amount at acquisition date during fiscal year	¥	826		¥	25,952
Carrying amount at end of fiscal year		21,965			38,651
Allowance for credit losses within the scope of the guidance on loans and debt securities acquired with deteriorated credit quality:
Balance of allowance for credit losses at beginning of fiscal year	¥	36,391		¥	37,381
Additional provisions during fiscal year		5,784			4,982
Reductions of allowance during fiscal year		2,066			1,129
Balance of allowance for credit losses at end of fiscal year		37,381			29,429
The MUFG Group considered prepayments in the determination of contractual cash flows and cash flows expected to be collected based on historical results.
Lease Receivables
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 direct financing leases involving various types of data processing equipment, office equipment and transportation equipment. As a result of the acquisition of Krungsri, the MUFG Group’s lease receivables increased by ¥912,366 million.
As of March 31, 2013 and 2014, the components of the investment in direct financing leases were as follows:
	2013			2014
	(in millions)
Minimum lease payments receivable	¥	677,959		¥	1,498,755
Estimated residual values of leased property		22,384			18,261
Less—unearned income		(69,196	)		(202,755	)
Net investment in direct financing leases	¥	631,147		¥	1,314,261
Future minimum lease payment receivables under noncancelable leasing agreements as of March 31, 2014 were as follows:
	Direct
	Financing
	Leases
	(in millions)
Fiscal year ending March 31:
2015	¥	440,086
2016		337,044
2017		267,306
2018		191,112
2019		106,385
2020 and thereafter		156,822
Total minimum lease payment receivables	¥	1,498,755
Government-led Loan Restructuring Program
Under the legislation enacted by the Japanese Diet in June 1996, which incorporates the restructuring program for the loans of seven failed housing-loan companies (the “Jusen”), the Deposit Insurance Corporation (“DIC”) established a Housing Loan Administration Corporation (“HLAC”) to collect and dispose of the loans of the liquidated Jusen. In 1999, HLAC merged with the Resolution and Collection Bank Limited to create the Resolution and Collection Corporation (“RCC”), which is wholly owned by the DIC.
Financial institutions, including the MUFG Group, waived the repayment of substantial amounts of the loans to the Jusen and transferred the remaining balances to HLAC. Financial institutions were requested to make loans to HLAC to finance its collection activities, and in the fiscal year ended March 31, 1997, the MUFG Group made loans of ¥407,078 million with an original maturity term of 15 years. The 15-year term loans to HLAC, which were guaranteed by the DIC under the legislation and the loan agreements, matured in 2011 and earned interest at TIBOR (Tokyo Interbank Offered Rate) plus 0.125%. On October 1, 2005, the MUFG Group acquired, at fair value, loans of the UFJ Holdings Group to HLAC in connection with the merger with UFJ Holdings.
Under this restructuring program, a Financial Stabilization Fund (the “Special Fund”) was established within the DIC, and the Bank of Japan and other financial institutions established another fund (the “New Fund”). These funds were principally invested in Japanese government bonds. The MUFG Group made non-interest-earning deposits of ¥176,089 million with the Special Fund and the New Fund in the fiscal year ended March 31, 1997, and expected all collection activities to be completed by December 2011, after 15 years of collection activities of the Jusen loans by RCC.
As the end of RCC’s operations was approaching, the amount of the loss (so-called “stage two loss”), which might have ultimately been incurred through the collection activities, became clearer. In May 2011, the Japanese Diet enacted a law to partially revise the Deposit Insurance Act. Although it had already been decided that the loss should be shared equally between the Japanese government and private financial institutions, the revised law clarified the details of how the Japanese government would absorb its half of the loss. On the other hand, the second half of the loss, which had to be absorbed by private financial institutions, would be covered by the investment income earned by the Special Fund during the 15 years.
In September 2011, the deposits of ¥161,435 million with the New Fund were fully collected according to their terms. In June 2012, the entire deposits of ¥204,956 million with the Special Fund were fully collected as well.
Sales of Loans
The MUFG Group originates various types of loans to corporate and individual borrowers in Japan and overseas in the normal course of business. In order to improve its loan quality, BTMU and MUTB actively disposed of nonperforming loans. Most of such nonperforming loans were disposed of by sales to third parties without any continuing involvement. Management of BTMU and MUTB generally approves disposals after significant sales terms, including prices, are negotiated. As such, loans are disposed of by sales shortly after the loans are transferred to the held-for-sale classification. The net gains on the sales of loans were ¥16,256 million, ¥14,274 million and ¥18,984 million for the fiscal years ended March 31, 2012, 2013 and 2014, respectively.
Related Party Loans
In some cases, the banking subsidiaries of MUFG make loans to related parties, including their directors and executive officers, in the course of their normal commercial banking business. At March 31, 2013 and 2014, outstanding loans to such related parties were not material.
In the opinion of management, these related party loans were made on substantially the same terms, including interest rates and collateral requirements, as those terms prevailing at the date these loans were made. For the fiscal years ended March 31, 2012, 2013 and 2014, there were no loans to related parties that were charged-off. Additionally, at March 31, 2012, 2013, and 2014, there were no loans to related parties that were impaired.

Premises_And_Equipment_Text_Bl

Premises And Equipment [Text Block]	12 Months Ended
	Mar. 31, 2014
Premises And Equipment [Text Block]	'
	5	PREMISES AND EQUIPMENT
	Premises and equipment at March 31, 2013 and 2014 consisted of the following:
		2013		2014
		(in millions)
	Land	¥	379,943	¥	403,184
	Buildings		723,902		747,998
	Equipment and furniture		767,733		929,939
	Leasehold improvements		236,353		251,875
	Construction in progress		17,976		27,606
	Total		2,125,907		2,360,602
	Less accumulated depreciation		1,066,853		1,123,954
	Premises and equipment-net	¥	1,059,054	¥	1,236,648
	Premises and equipment include capitalized leases, principally related to data processing equipment, which amounted to ¥43,222 million and ¥41,907 million at March 31, 2013 and 2014, respectively. Accumulated depreciation on such capitalized leases at March 31, 2013 and 2014 amounted to ¥29,385 million and ¥29,769 million, respectively.
	BTMU has entered into sales agreements to sell its buildings and land and, under separate agreements, leased those properties back for its business operations, including bank branches. BTMU either provided nonrecourse financings to the buyers for the sales proceeds or invested in the equities of the buyers. As a result, BTMU was considered to have continuing involvement with the properties. For accounting and reporting purposes, these transactions were accounted for under the financing method with the sales proceeds recognized as a financing obligation. The properties were reported on the accompanying consolidated balance sheets and depreciated. The financing obligation at March 31, 2013 and 2014 was ¥47,435 million and ¥46,339 million, respectively.
	For the fiscal years ended March 31, 2012, 2013 and 2014, the MUFG Group recognized ¥10,913 million, ¥3,975 million and ¥13,850 million, respectively, of impairment losses for long-lived assets, primarily real estate which was either formerly used for its banking operations and is no longer used or real estate that is being used where recovery of the carrying amount is doubtful. In addition, ¥5,209 million, ¥1,932 million and ¥226 million of impairment losses were recognized for real estate held for sale for the fiscal years ended March 31, 2012, 2013 and 2014, respectively. These losses are included in Other non-interest expenses. In computing the amount of impairment losses, fair value was determined primarily based on market prices, if available, or the estimated price based on an appraisal.

Goodwill_And_Other_Intangible_

Goodwill And Other Intangible Assets [Text Block]	12 Months Ended
	Mar. 31, 2014
Goodwill And Other Intangible Assets [Text Block]	'
	6	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, 2013 and 2014:
		Integrated			Integrated			Integrated			Integrated Global Business								Krungsri		Global		Total
		Retail			Corporate			Trust			Group										Markets
		Banking			Banking			Assets
		Business			Business			Business
		Group			Group			Group			Other than			MUAH		Total
											MUAH
		(in millions)
	Balance at March 31, 2012:
	Goodwill	¥	840,055		¥	885,234		¥	22,527		¥	152,203		¥	192,520	¥	344,723		¥	—	¥	2,300	¥	2,094,839
	Accumulated impairment losses		(840,055	)		(885,234	)		(14,735	)		(532	)		—		(532	)		—		—		(1,740,556	)
			—			—			7,792			151,671			192,520		344,191					2,300		354,283
	Goodwill acquired during the		—			—			—			—			39,683		39,683			—		—		39,683
	fiscal year(2)
	Foreign currency translation adjustments and other		—			—			—			—			23,990		23,990			—		—		23,990
	Balance at March 31, 2013:
	Goodwill		840,055			885,234			22,527			152,203			256,193		408,396			—		2,300		2,158,512
	Accumulated impairment losses		(840,055	)		(885,234	)		(14,735	)		(532	)		—		(532	)		—		—		(1,740,556	)
			—			—			7,792			151,671			256,193		407,864			—		2,300		417,956
	Goodwill acquired during the		—			—			14,443			—			26,181		26,181			217,386		—		258,010
	fiscal year(2)
	Impairment loss		—			—			(7,792	)		—			—		—			—		—		(7,792	)
	Foreign currency translation adjustments and other		—			—			825			—			59,516		59,516			—		—		60,341
	Balance at March 31, 2014:
	Goodwill		840,055			885,234			37,795			152,203			341,890		494,093			217,386		2,300		2,476,863
	Accumulated impairment losses		(840,055	)		(885,234	)		(22,527	)		(532	)		—		(532	)		—		—		(1,748,348	)
		¥	—		¥	—		¥	15,268		¥	151,671		¥	341,890	¥	493,561		¥	217,386	¥	2,300	¥	728,515
	Notes:
	-1	See Note 29 for the business segment information of the MUFG Group.
	-2	See Note 2 for the goodwill acquired in connection with principal acquisitions.
	There were no impairment losses recognized for the fiscal years ended March 31, 2012 and 2013.
	For the fiscal year ended March 31, 2014, the MUFG Group recognized ¥7,792 million in impairment of goodwill relating to the Integrated Trust Assets Business Group segment. The MUFG Group readjusted its future projection of a reporting unit in this segment, considering a subsidiary’s recent business performance. As a result, the fair value of this reporting unit, which is based on discounted future cash flows, fell below the carrying amount of the reporting unit, and the impairment loss was recognized on the related goodwill. The impairment loss was included in Other non-interest expenses in the accompanying consolidated statements of income.
	Other Intangible Assets
	The table below presents the gross carrying amount, accumulated amortization and net carrying amount, in total and by major class of intangible assets at March 31, 2013 and 2014:
		2013									2014
		Gross			Accumulated			Net			Gross			Accumulated		Net
		carrying			amortization			carrying			carrying			amortization		carrying
		amount						amount			amount					amount
		(in millions)
	Intangible assets subject to amortization:
	Software	¥	1,640,297		¥	1,105,783		¥	534,514			¥1,858,371			¥1,245,657		¥612,714
	Core deposit intangibles		638,863			456,339			182,524			712,188			497,219		214,969
	Customer relationships		233,360			136,603			96,757			380,674			147,774		232,900
	Trade names		52,562			14,430			38,132			72,788			16,995		55,793
	Other		4,899			2,744			2,155			8,754			2,562		6,192
	Total	¥	2,569,981		¥	1,715,899			854,082			¥3,032,775			¥1,910,207		1,122,568
	Intangible assets not subject to amortization:
	Indefinite-lived trade names								3,037								3,037
	Other								9,034								7,749
	Total								12,071								10,786
	Total							¥	866,153								¥1,133,354
	Intangible assets subject to amortization acquired during the fiscal year ended March 31, 2013 amounted to ¥171,650 million, which primarily consisted of ¥163,748 million of software. The weighted average amortization period for these assets is 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, 2013 amounted to ¥50 million.
	Intangible assets subject to amortization acquired during the fiscal year ended March 31, 2014 amounted to ¥455,843 million, which primarily consisted of ¥225,108 million of software, ¥61,629 million of core deposit intangibles, ¥145,936 million of customer relationships and ¥18,083 million of trade names. The weighted average amortization period for these assets are 5 years, 11 years, 13 years and 22 years, respectively. There is no significant residual value estimated for these assets. Intangible assets not subject to amortization acquired during the fiscal year ended March 31, 2014 amounted to ¥289 million. See Note 2 for further details of acquired intangible assets.
	For the fiscal years ended March 31, 2012, 2013 and 2014, the MUFG Group recognized ¥30,986 million, ¥3,378 million and ¥312 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 impairment loss for the fiscal year ended March 31, 2012 included a loss of ¥8,334 million relating to the contractual rights of a business alliance reported under the Integrated Retail Banking Business Group, which were not subject to amortization, and a loss of ¥18,554 million relating to the customer relationships from fund contracts under the Integrated Trust Assets Business Group, which were reclassified from intangible assets not subject to amortization to those subject to amortization at September 30, 2011. The intangible assets were valued based on discounted expected future cash flows. The MUFG Group reflected the business environment of the credit card business, which has recently experienced further deterioration, in the future cash flows projection for the contractual rights above. Also, the estimated future cash flows of the customer relationships above from fund contracts were revised downward due to the recent global financial market instability and its adverse impact on the expected growth prospects of trust assets. Accordingly, the MUFG Group reevaluated the intangible assets and recognized impairment losses.
	The estimated aggregate amortization expense for intangible assets for the next five fiscal years is as follows:
		(in millions)
	Fiscal year ending March 31:
	2015	¥	231,427
	2016		198,788
	2017		170,098
2018		135,245
2019		95,218

Income_Taxes_Text_Block

Income Taxes [Text Block]	12 Months Ended
	Mar. 31, 2014
Income Taxes [Text Block]	'
	7	INCOME TAXES
	Income (loss) before Income Tax Expense
	Income (loss) before income tax expense by jurisdiction for the fiscal years ended March 31, 2012, 2013 and 2014 was as follows:
		2012			2013			2014
		(in millions)
	Domestic income	¥	1,037,891		¥	898,596		¥	1,012,551
	Foreign income (loss)		(187,949	)(1)		517,275			407,892
	Total	¥	849,942		¥	1,415,871		¥	1,420,443
	Note:
	-1	An other-than-temporary impairment loss of Morgan Stanley’s common stock was included in Foreign income (loss). See Note 2 for further details of an other-than-temporary impairment loss of Morgan Stanley’s common stock.
	Income Tax Expense (Benefit)
	The detail of current and deferred income tax expense for the fiscal years ended March 31, 2012, 2013 and 2014 was as follows:
		2012			2013			2014
		(in millions)
	Current:
	Domestic	¥	156,764		¥	102,357		¥	243,648
	Foreign		79,313			60,609			102,316
	Total		236,077			162,966			345,964
	Deferred:
	Domestic		171,889			122,804			(5,523	)
	Foreign		21,225			10,250			(2,524	)
	Total		193,114			133,054			(8,047	)
	Income tax expense		429,191			296,020			337,917
	Income tax expense (benefit) reported in Accumulated OCI relating to:
	Investment securities		116,997			336,531			96,422
	Derivatives qualifying for cash flow hedges		235			2,217			(235	)
	Defined benefit plans		(66,573	)		43,213			69,515
	Foreign currency translation adjustments		13,230			18,537			51,414
	Total		63,889			400,498			217,116
	Total	¥	493,080		¥	696,518		¥	555,033
	On November 30, 2011, the Japanese Diet enacted two tax related laws: “Amendment to the 2011 Tax Reform” and “Special Measures to Secure the Financial Resources to Implement the Restoration from The Great East Japan Earthquake.” The changes under the new laws include a limitation on the use of net operating loss carryforwards to 80% of taxable income, a two-year increase in the carryforward period of certain net operating loss carryforwards to a nine-year period, and an approximately 5% reduction in the effective statutory rate of corporate income tax from 40.6% to 35.6%. While the reduction in the effective statutory rate was effective for fiscal years beginning on or after April 1, 2012, a temporary surtax levied on corporate income taxes to fund the earthquake recovery efforts caused the effective statutory rate of corporate income tax to be approximately 38.0% for the three year period between April 1, 2012 and March 31, 2015. The change in tax laws resulted in an increase of ¥77,997 million in income tax expense for the fiscal year ended March 31, 2012.
	On March 20, 2014, the Japanese Diet enacted the “2014 Tax Reform” which terminated the temporary surtax levied on corporate income taxes one year earlier than the change in tax law on November 30, 2011 as described above. As a result, the effective statutory rate of corporate income tax for the fiscal year ending March 31, 2015 was set at approximately 35.6%. The change in tax law resulted in an increase of ¥16,687 million in income tax expense for the fiscal year ended March 31, 2014.
	The MUFG Group has changed to filing on a consolidated basis for corporate income taxes within Japan beginning with the fiscal year ending March 31, 2015. A consolidated basis for corporate income taxes results in the reporting of taxable income or loss based upon the combined profits or losses of the parent company and its wholly-owned domestic subsidiaries.
	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 40.6% for the fiscal year ended March 31, 2012 and approximately 38.0% for the fiscal years ended March 31, 2013 and 2014. 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 income to the combined normal effective statutory tax rates for the fiscal years ended March 31, 2012, 2013 and 2014 is as follows:
		2012			2013			2014
	Combined normal effective statutory tax rate		40.6	%		38	%		38	%
	Nondeductible expenses		0.2			0.1			0.2
	Dividends from foreign subsidiaries		0.1			0			0
	Foreign tax credit and payments		(2.1	)		(0.8	)		(0.6	)
	Lower tax rates applicable to income of subsidiaries		(0.5	)		(0.5	)		(0.4	)
	Change in valuation allowance		2.3			(7.3	)		(12.4	)
	Realization of previously unrecognized tax effects of subsidiaries		0			(10.7	)(1)		(0.1	)
	Nontaxable dividends received		(3.4	)		(2.3	)		(3.3	)
	Undistributed earnings of subsidiaries		0.2			1.5			0.5
	Tax and interest expense for uncertainty in income taxes		0.1			(0.1	)		—
	Expiration of loss carryforward		4.8			2.1			—
	Effect of changes in tax laws		9.1			—			1.2
	Other—net		(0.9	)		0.9			0.7
	Effective income tax rate		50.5	%		20.9	%		23.8	%
	Note:
	-1	In April 2012, one of the wholly-owned subsidiaries of BTMU was liquidated. The liquidation resulted in the realization of tax benefits that were not previously recognized as deferred tax assets, resulting in a ¥151,309 million reduction of income tax expense and a 10.7% reduction in the effective tax rate for the fiscal year ended March 31, 2013.
	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, 2013 and 2014 were as follows:
		2013			2014
		(in millions)
	Deferred tax assets:
	Allowance for credit losses	¥	774,612		¥	650,069
	Operating loss carryforwards		106,856			102,260
	Loans		14,360			7,632
	Accrued liabilities and other		355,337			309,327
	Premises and equipment, including sale-and-leaseback transactions		102,217			94,652
Derivative financial instruments		64,583			94,514
Accrued severance indemnities and pension plans		164,797			44,810
Valuation allowance		(483,006	)		(308,561	)
Total deferred tax assets		1,099,756			994,703
Deferred tax liabilities:
Investment securities (including trading account assets at fair value under fair value option)		488,728			574,807
Intangible assets		104,736			159,330
Lease transactions		54,025			77,542
Other		64,806			74,471
Total deferred tax liabilities		712,295			886,150
Net deferred tax assets	¥	387,461		¥	108,553
The valuation allowance was provided primarily against deferred tax assets recorded at MUFG and its subsidiaries with operating loss carryforwards. The amount of valuation allowance is determined 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 the fiscal year ended March 31, 2014, the MUFG Group recorded a valuation allowance release, on the basis of management’s reassessment of the amount of its deferred tax assets that were more likely than not to be realized. As of March 31, 2014, management considered new evidence, both positive and negative, that could impact management’s view with regard to future realization of deferred tax assets.
Among others, a release of valuation allowance of ¥91,070 million was due to the application of the consolidated corporate-tax system beginning with the fiscal year ending March 31, 2015. This is because MUFG would be able to utilize income in more profitable subsidiaries to realize the benefit of net operating loss carryforwards and existing deductible temporary differences recorded at MUFG. Management believes that the net operating loss carryforwards related to corporate taxes will be fully utilized by the application of the consolidated corporate-tax system.
Among others, a release of valuation allowance of ¥45,922 million was due to the profitability improvement of a certain subsidiary. Management considered various factors, including the improved operating performance and cumulative operating results over the prior several years of the subsidiary as well as the outlook regarding prospective operating performance of the subsidiary, and determined that sufficient positive evidence exists as of March 31, 2014, to conclude that it is more likely than not that additional deferred tax assets would be realizable.
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, 2013 and 2014 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, 2013 and 2014, the undistributed earnings of such foreign subsidiaries amounted to approximately ¥28,644 million and ¥37,498 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 plans 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.
Operating Loss and Tax Credit Carryforwards
At March 31, 2014, the MUFG Group had operating loss carryforwards for corporate tax of ¥302,033 million and tax credit carryforwards of ¥6,442 million for tax purposes. Such carryforwards, if not utilized, are scheduled to expire as follows:
	Operating loss			Tax credit
	carryforwards			carryforwards
	(in millions)
Fiscal year ending March 31:
2015	¥	1,808		¥	579
2016		—			47
2017		—			27
2018		31,619			52
2019		6,412			56
2020		34,370			96
2021 and thereafter		216,288			3,900
No definite expiration date		11,536			1,685
Total	¥	302,033		¥	6,442
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, 2012, 2013 and 2014:
	2012			2013			2014
	(in millions)
Balance at beginning of fiscal year	¥	61,297		¥	58,588		¥	30,956
Gross amount of increases for current year’s tax positions		455			366			439
Gross amount of decreases for current year’s tax positions		(339	)		(49	)		—
Gross amount of increases for prior years’ tax positions		2,887			2,765			333
Gross amount of decreases for prior years’ tax positions		(312	)		(35,119	)(1)		(25,318	)(2)
Net amount of changes relating to settlements with tax authorities		(2,515	)		760			(244	)
Decreases due to lapse of applicable statutes of limitations		(1,123	)		—			—
Foreign exchange translation and others		(1,762	)		3,645			7,827
Balance at end of fiscal year	¥	58,588		¥	30,956		¥	13,993
Notes:
-1	The decrease was primarily because, during the fiscal year ended March 31, 2013, the MUFG Group closed an examination with U.S. tax authorities on issues related to prior years’ tax positions.
-2	The decrease related to prior year tax positions is primarily from the resolution of uncertain tax positions in the U.S. for both federal income taxes and California state tax.
The total amount of unrecognized tax benefits at March 31, 2012, 2013 and 2014 that, if recognized, would affect the effective tax rate are ¥9,170 million, ¥9,632 million and ¥3,570 million, respectively. The remainder of the uncertain tax positions have offsetting amounts in other jurisdictions or are temporary differences.
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, 2012, 2013 and 2014:
	2012			2013			2014
	(in millions)
Balance at beginning of fiscal year	¥	7,033		¥	6,934		¥	4,528
Total interest and penalties in the consolidated statements of income		27			(2,975	)		(698	)
Total cash settlements, foreign exchange translation and others		(126	)		569			2,116
Balance at end of fiscal year	¥	6,934		¥	4,528		¥	5,946
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	2013 and forward
United States—Federal	2007 and forward
United States—California	2009 and forward
Thailand	2009 and forward
The MUFG Group is currently under continuous examinations by the tax authorities in various domestic and foreign jurisdictions and many of these examinations are resolved every year. It is reasonably possible that the unrecognized tax benefits will decrease by approximately ¥3.0 billion during the next twelve months, since resolved items will be removed from the balance whether their resolution results in payment or recognition.

Pledged_Assets_And_Collateral_

Pledged Assets And Collateral [Text Block]	12 Months Ended
	Mar. 31, 2014
Pledged Assets And Collateral [Text Block]	'
	8	PLEDGED ASSETS AND COLLATERAL
	Pledged Assets
	At March 31, 2014, assets mortgaged, pledged, or otherwise subject to lien were as follows:
		2014
		(in millions)
	Trading account securities	¥	13,654,793
	Investment securities		4,728,870
	Loans		8,087,278
	Other		84,291
	Total	¥	26,555,232
	The above pledged assets were classified by type of liabilities to which they related as follows:
		2014
		(in millions)
	Deposits	¥	552,503
	Call money and funds purchased		708,086
	Payables under repurchase agreements and securities lending transactions		15,436,764
	Other short-term borrowings and long-term debt		9,657,563
	Other		200,316
	Total	¥	26,555,232
	In addition, at March 31, 2014, certain investment securities, principally Japanese national government and Japanese government agency bonds, loans, and other assets aggregating to ¥20,812,386 million were pledged as collateral for acting as a collection agent of public funds, for settlement of exchange at the Bank of Japan and the Tokyo Bankers Association, 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 engaged in banking businesses in foreign countries. At March 31, 2013 and 2014 the reserve funds maintained by the MUFG Group, which are included in Cash and due from banks and Interest-earning deposits in other banks, were ¥5,697,318 million and ¥13,007,902 million, respectively. Average reserves during the fiscal years ended March 31, 2013 and 2014 were ¥4,566,092 million and ¥12,313,722 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.
	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, 2014, the MUFG Group pledged ¥29,528 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 is 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, 2013 and 2014, the fair value of the collateral accepted by the MUFG Group that is permitted to be sold or repledged was ¥11,873 billion and ¥18,637 billion, respectively, of which ¥8,190 billion and ¥14,011 billion, respectively, was sold or repledged.
	At March 31, 2013 and 2014, the cash collateral pledged for derivative transactions, which is included in Other assets, was ¥1,573,698 million and ¥1,045,851 million, respectively, and the cash collateral received for derivative transactions, which is included in Other liabilities, was ¥366,544 million and ¥454,506 million, respectively.

Deposits_Text_Block

Deposits [Text Block]	12 Months Ended
	Mar. 31, 2014
Deposits [Text Block]	'
	9	DEPOSITS
	The balances of time deposits, including certificates of deposit (“CDs”), issued in amounts of ¥10 million (approximately U.S.$97 thousand at the Federal Reserve Bank of New York’s noon buying rate on March 31, 2014) or more with respect to domestic deposits and issued in amounts of U.S.$100,000 or more with respect to foreign deposits were ¥28,267,100 million and ¥19,783,917 million, respectively, at March 31, 2013, and ¥27,555,387 million and ¥26,026,728 million, respectively, at March 31, 2014.
	The maturity information at March 31, 2014 for domestic and foreign time deposits, including CDs, is summarized as follows:
		Domestic		Foreign
		(in millions)
	Due in one year or less	¥	35,654,357	¥	25,819,867
	Due after one year through two years		6,307,843		421,138
	Due after two years through three years		2,813,975		145,802
	Due after three years through four years		611,214		121,113
	Due after four years through five years		807,890		130,491
	Due after five years		464,856		23,225
	Total	¥	46,660,135	¥	26,661,636

Call_Money_And_Funds_Purchased

Call Money And Funds Purchased [Text Block]	12 Months Ended
	Mar. 31, 2014
Call Money And Funds Purchased [Text Block]	'
	10	CALL MONEY AND FUNDS PURCHASED
	A summary of funds transactions for the fiscal years ended March 31, 2013 and 2014 is as follows:
		2013			2014
		(in millions, except percentages and days)
	Outstanding at end of fiscal year:
	Amount	¥	4,010,582		¥	3,417,455
	Principal range of maturities		1 day to 30 days			1 day to 30 days
	Weighted average interest rate		0.18	%		0.18	%

Due_To_Trust_Account_Text_Bloc

Due To Trust Account [Text Block]	12 Months Ended
	Mar. 31, 2014
Due To Trust Account [Text Block]	'
	11	DUE TO TRUST ACCOUNT
	MUTB 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 MUTB 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 for the fiscal years ended March 31, 2013 and 2014 is as follows:
		2013			2014
		(in millions, except percentages)
	Amount outstanding at end of fiscal year	¥	633,029		¥	750,210
	Weighted average interest rate on outstanding balance at end of fiscal year		0.09	%		0.08	%

ShortTerm_Borrowings_And_LongT

Short-Term Borrowings And Long-Term Debt [Text Block]	12 Months Ended
	Mar. 31, 2014
Short-Term Borrowings And Long-Term Debt [Text Block]	'
	12	SHORT-TERM BORROWINGS AND LONG-TERM DEBT
	At March 31, 2013 and 2014, the MUFG Group had unused lines of credit for short-term financing amounting to ¥11,282,220 million and ¥10,750,175 million, respectively. The amounts principally consist of the lines of collateralized intraday overdrafts without interest charges and collateralized overnight loans on bills at the official discount rate granted by the Bank of Japan, 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, 2013 and 2014 were comprised of the following:
		2013			2014
		(in millions, except percentages)
	Domestic offices:
	Commercial paper	¥	1,358,067		¥	1,235,525
	Borrowings from the Bank of Japan		7,466,717			5,888,541
	Borrowings from other financial institutions		203,120			224,676
	Other		49,500			59,501
	Total domestic offices		9,077,404			7,408,243
	Foreign offices:
	Commercial paper		2,125,851			3,091,977
	Borrowings from other financial institutions		386,068			333,116
	Short-term debentures		—			119,837
	Other		19,389			153,074
	Total foreign offices		2,531,308			3,698,004
	Total		11,608,712			11,106,247
	Less unamortized discount		114			176
	Other short-term borrowings—net	¥	11,608,598		¥	11,106,071
	Weighted average interest rate on outstanding balance at end of fiscal year		0.2	%		0.25	%
	Long-term debt (with original maturities of more than one year) at March 31, 2013 and 2014 was comprised of the following:
		2013			2014
		(in millions)
	MUFG:
	Obligations under capital leases	¥	59		¥	78
	Subordinated debt(1):
	Adjustable rate bonds, payable in Japanese yen, no stated maturity, principally 3.92%-4.42%		380,500			380,500
	Adjustable rate borrowings, payable in Japanese yen, no stated maturity, principally 3.42%-4.78%		1,500			1,500
	Adjustable rate borrowings, payable in US dollars, no stated maturity, principally 6.25%		470			515
	Adjustable rate borrowings, payable in Euro, no stated maturity, principally 4.75%-5.17%		1,207			1,416
	Adjustable rate borrowings, payable in other currencies excluding Japanese yen, US dollars, Euro, no stated maturity, principally 6.20%(2)		430			514
	Total		384,166			384,523
	BTMU:
	Obligations under capital leases	¥	15,294		¥	12,260
	Obligation under sale-and-leaseback transactions		47,435			46,339
	Unsubordinated debt(1):
	Fixed rate bonds, payable in Japanese yen, due 2014-2027, principally 0.16%-2.69%		1,337,900			1,311,801
	Fixed rate bonds, payable in US dollars, due 2015-2044, principally 1.00%-4.70%		639,679			1,109,470
	Fixed rate bonds, payable in other currencies excluding Japanese yen, US dollars, due 2014-2017, principally 4.05%-4.91%(2)		126,709			71,439
	Fixed rate borrowings, payable in Japanese yen, due 2014-2028, principally 0.10%-0.50%		10,297			1,163,291
	Fixed rate borrowings, payable in US dollars, due 2018, principally 7.49%		383			342
	Fixed rate borrowings, payable in other currencies excluding Japanese yen, US dollars, due 2013-2014, principally 2.13%-5.65%(2)		384			—
	Adjustable rate bonds, payable in Japanese yen, due 2014, principally 1.57%		20,000			—
	Floating rate bonds, payable in US dollars, due 2016-2017, principally 0.65%-0.85%		93,667			226,424
	Floating rate bonds, payable in other currencies excluding Japanese yen, US dollars, due 2015-2017, principally 3.77%-4.00%(2)		29,379			90,431
	Floating rate borrowings, payable in US dollars, due 2014-2024, principally 0.33%-0.67%		780,410			942,215
	Floating rate borrowings, payable in Euro, due 2014-2021, principally 0.45%-0.48%(2)		7,839			7,497
	Total		3,046,647			4,922,910
	Subordinated debt(1):
	Fixed rate bonds, payable in Japanese yen, due 2014-2031, principally 0.93%-2.91%		1,579,037			1,336,892
	Fixed rate borrowings, payable in Japanese yen, due 2016-2035, principally 0.56%-2.24%		233,419			233,400
	Fixed rate borrowings, payable in US dollars, due 2013, principally 6.76%		118,177			—
	Adjustable rate bonds, payable in Japanese yen, due 2019, principally 1.20%		93,700			31,000
	Adjustable rate borrowings, payable in Japanese yen, due 2017-2028, principally 0.25%-2.86%		395,600			245,800
	Adjustable rate borrowings, payable in Japanese yen, no stated maturity, principally 0.97%-4.78%		891,199			845,400
	Adjustable rate borrowings, payable in US dollars, no stated maturity, principally 6.25%		221,018			241,862
	Adjustable rate borrowings, payable in Euro, no stated maturity, principally 4.75%-5.17%		158,760			186,270
	Adjustable rate borrowings, payable in other currencies excluding Japanese yen, US dollars, Euro, no stated maturity, principally 6.20%(2)		80,885			96,790
	Floating rate borrowings, payable in Japanese yen, due 2020-2027, principally 0.36%-0.86%		41,900			41,900
	Total		3,813,695			3,259,314
	Obligations under loan securitization transaction accounted for as secured borrowings due 2014-2044, principally 0.24%-5.90%		1,516,893			1,146,638
	Payable under repurchase agreements due 2016-2018, principally 0.63%-1.48%		188,100			360,220
Total		8,628,064			9,747,681
Other subsidiaries:
Obligations under capital leases	¥	10,286		¥	7,781
Unsubordinated debt(1):
Fixed rate borrowings, bonds and notes, payable in Japanese yen, due 2014-2044, principally 0.00%-16.00%		547,746			915,357
Fixed rate borrowings, bonds and notes, payable in US dollars, due 2014-2038, principally 0.00%-13.10%		46,849			396,704
Fixed rate bonds and notes, payable in Euro, due 2018, principally 4.21%		—			6,514
Fixed rate bonds and notes, payable in Thai baht, due 2014-2018, principally 0.00%-4.80%		1,437			269,219
Fixed rate borrowings, bonds and notes, payable in other currencies excluding Japanese yen, US dollars, Euro, Thai baht, due 2014-2037, principally 0.50%-10.75%(2)		8,952			35,011
Floating/Adjustable rate borrowings, bonds and notes, payable in Japanese yen, due 2014-2044, principally 0.00%-24.00%		1,199,685			1,426,933
Floating/Adjustable rate borrowings, bonds and notes, payable in US dollars, due 2014-2038, principally 0.00%-7.30%		403,809			276,402
Floating rate bonds and notes, payable in Euro, due 2014-2018, principally 0.00%-1.76%		22,492			34,281
Floating rate borrowings, bonds and notes, payable in other currencies excluding Japanese yen, US dollars, Euro, due 2014-2037, principally 0.00%-1.10%(2)		2,006			2,055
Total		2,232,976			3,362,476
Subordinated debt(1):
Fixed rate borrowings, bonds and notes, payable in Japanese yen, due 2014-2030, principally 0.56%-2.98%		435,544			484,194
Fixed rate bonds and notes, payable in US dollars, due 2014-2019, principally 5.38%-11.33%		105,096			77,330
Fixed rate bonds and notes, payable in Thai baht, due 2020-2022, principally 4.51%-4.70%		—			111,682
Adjustable rate borrowings, bonds and notes, payable in Japanese yen, due 2020, principally 1.76%		72,300			5,000
Adjustable rate borrowings, bonds and notes, payable in Japanese yen, no stated maturity, principally 1.93%-3.50%		105,744			105,667
Floating rate borrowings, bonds and notes, payable in Japanese yen, due 2014-2021, principally 0.57%-1.52%		192,391			204,926
Floating rate borrowings, bonds and notes, payable in US dollars, due 2033-2036, principally 1.95%-3.50%		—			6,972
Total		911,075			995,771
Obligations under loan securitization transaction accounted for as secured borrowings due 2014-2018, principally 0.95%-2.71%		15,791			446
Total		3,170,128			4,366,474
Total	¥	12,182,358		¥	14,498,678
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, British pound, Indonesian rupiah, Brazilian real, Russian ruble etc, 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, 2013 and 2014.
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, 2014:
	MUFG			BTMU			Other		Total
							subsidiaries
	(in millions)
Fiscal year ending March 31:
2015	¥	20		¥	1,111,236		¥	575,174	¥	1,686,430
2016		18			931,103			646,907		1,578,028
2017		13			2,295,298			585,917		2,881,228
2018		6			891,232			353,487		1,244,725
2019		3			529,641			544,859		1,074,503
2020 and thereafter		384,463			3,989,171			1,660,130		6,033,764
Total	¥	384,523		¥	9,747,681		¥	4,366,474	¥	14,498,678

Severance_Indemnities_And_Pens

Severance Indemnities And Pension Plans [Text Block]	12 Months Ended
	Mar. 31, 2014
Severance Indemnities And Pension Plans [Text Block]	'
	13		SEVERANCE INDEMNITIES AND PENSION PLANS
	Defined Benefit Pension Plans
	The MUFG Group has funded contributory and non-contributory defined benefit pension plans (“pension benefits”), which cover substantially all of its employees and provide for lifetime annuity payments commencing at age 65 based on eligible compensation at the time of severance, rank, years of service and other factors.
	BTMU and certain domestic subsidiaries, MUSHD, Mitsubishi UFJ NICOS and some subsidiaries of MUFG have non-contributory Corporate Defined Benefit Pension plans (“CDBPs”) which provide benefits to all their domestic employees. In addition, MUTB had a contributory CDBP similar to these non-contributory CDBPs until a transfer of its remaining corporate portion into a non-contributory CDBP subsequent to the separation process as described below.
	In December 2011, in accordance with the Defined Benefit Corporate Pension Plan Act, which permits each employer and employees’ pension fund plan to separate the substitutional portion of the employees’ pension fund from the rest of the fund and transfer the related obligation and assets to the Japanese government, MUTB obtained an approval from the Minister of Health, Labor and Welfare for an exemption from the obligation to pay benefits for future employee services related to the substitutional portion of the governmental welfare pension program. In January 2013, MUTB also obtained an approval for an exemption from the obligation to pay benefits for past employee services related to the substitutional portion. To complete the separation process, the substitutional obligation and the related plan assets were transferred to the Japanese government on February 17, 2014. In accordance with the guidance, which addresses the accounting for the transfer to the Japanese government of a substitutional portion of employee pension fund liabilities, MUTB accounted for the entire separation process, upon completion of transfer of the plan assets to the government, as a single settlement transaction. During the fiscal year ended March 31, 2014, MUTB recognized (1) the difference of ¥115,210 million between the accumulated benefit obligations settled and the assets transferred to the Japanese Government as a government subsidy, which was recognized as a gain in the accompanying consolidated statements of income, (2) the proportionate amount of the net unrealized loss of ¥42,435 million for the substitutional portion as settlement loss, and (3) the difference of ¥1,770 million between the projected benefit obligations and the accumulated benefit obligations related to the substitutional portion, as gain on derecognition of previously accrued salary progression. The settlement loss and gain on derecognition of previously accrued salary progression were included in Salaries and employee benefits in the accompanying consolidated statements of income. The remaining portion of the employees’ pension fund (that is, the corporate portion) continued to exist as a CDBP, although, from a legal regulatory perspective, it is deemed to have been dissolved and a CDBP is deemed newly established when the separation process is completed. Subsequent to the separation process, MUTB transferred the remaining corporate portion of the employees’ pension fund into a non-contributory CDBP.
	In addition to the CDBPs, BTMU and MUTB had non-contributory closed Tax-Qualified Pension Plans (“closed TQPPs”), which were defined benefit pension plans that provide benefits to certain retired employees, excluding directors in Japan, based on eligible compensation at the time of severance, years of service and other factors. MUTB also had a contributory closed TQPP in addition to the non-contributory closed TQPPs. In March 2012, Tax-Qualified Pension Plans were abolished pursuant to the Amendment to the 2011 Tax Reform enacted in 2011. Prior to the abolishment, the contributory and non-contributory closed TQPPs held by BTMU and MUTB were integrated into their non-contributory CDBPs. The balances of projected benefit obligations and plan assets of the closed TQPPs were directly transferred with no impact on the MUFG Group’s financial position and results of operations.
	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 severance indemnities plans (“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”).
	Net periodic cost of pension benefits and other benefits for the fiscal years ended March 31, 2012, 2013 and 2014 includes the following components:
			Domestic subsidiaries									Foreign offices and subsidiaries
			2012			2013			2014			2012						2013						2014
			Pension			Pension			Pension			Pension			Other			Pension			Other			Pension			Other
			benefits			benefits			benefits			benefits			benefits			benefits			benefits			benefits			benefits
			and SIP			and SIP			and SIP
			(in millions)
	Service cost—benefits earned during the fiscal year		¥	39,709		¥	38,840		¥	39,309		¥	6,328		¥	968		¥	8,098		¥	1,114		¥	12,215		¥	1,526
	Interest cost on projected benefit obligation			31,509			26,648			22,464			10,649			1,192			10,716			1,135			13,467			1,352
	Expected return on plan assets			(55,336	)		(48,106	)		(54,222	)		(14,216	)		(1,106	)		(14,169	)		(1,030	)		(19,928	)		(1,423	)
	Amortization of net actuarial loss			29,424			42,496			23,941			6,221			514			8,030			715			9,808			776
	Amortization of prior service cost			(11,534	)		(12,309	)		(11,793	)		35			(57	)		54			(59	)		157			(69	)
	Amortization of net obligation at transition			—			—			—			—			105			—			105			—			—
	Loss (gain) on settlements and curtailment			4,378			2,600			41,456			40			—			95			(3	)		—			—
	Net periodic benefit cost		¥	38,150		¥	50,169		¥	61,155		¥	9,057		¥	1,616		¥	12,824		¥	1,977		¥	15,719		¥	2,162
	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
			2012			2013			2014			2012						2013						2014
			Pension			Pension			Pension			Pension			Other			Pension			Other			Pension			Other
			benefits			benefits			benefits			benefits			benefits			benefits			benefits			benefits			benefits
			and SIP			and SIP			and SIP
	Weighted-average assumptions used:
	Discount rates in determining expense			1.91	%		1.55	%		1.25	%		5.67	%		5.36	%		4.73	%		4.7	%		4.25	%		4.01	%
	Discount rates in determining benefit obligation			1.55			1.25			1.23			4.73			4.7			4.25			4.01			4.87			4.63
	Rates of increase in future compensation level for determining expense			3.23			3.31			3.07			4.67			—			4.6			—			4.58			—
	Rates of increase in future compensation level for determining benefit obligation			3.31			3.07			3.36			4.6			—			4.58			—			4.64			—
	Expected rates of return on plan assets			3.11			2.78			2.83			7.49			8			6.92			7.5			6.98			7.5
	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, and the effect of a one-percentage-point change in the assumed health care cost trend rate:
			MUAH						Other than MUAH
			2013(1)			2014(1)			2013(1)			2014(1)
	Initial trend rate			8.31	%		7.71	%		7.5	%		8	%
	Ultimate trend rate			4.5	%		4.5	%		4.5	%		5	%
	Year the rate reaches the ultimate trend rate			2021			2021			2017			2019
			MUAH						Other than MUAH
			One-percentage-			One-percentage-			One-percentage-			One-percentage-
			point increase			point decrease			point increase			point decrease
			(in millions)
	Effect on total of service and interest cost components			¥422		¥	(422	)		¥79		¥	(61	)
	Effect on postretirement benefit obligation			3,478			(2,951	)		1,128			(885	)
	Note:
	-1		Fiscal years of MUAH and foreign subsidiaries end on December 31. Therefore, the above tables present the rates and amounts at December 31, 2012 and 2013, respectively.
	The following table sets forth the combined funded status and amounts recognized in the accompanying consolidated balance sheets at March 31, 2013 and 2014:
			Domestic subsidiaries												Foreign offices and subsidiaries
			2013						2014						2013						2014
			Non-contributory			Contributory			Non-contributory			Contributory			Pension			Other			Pension			Other
			pension benefits			pension			pension benefits			pension			benefits			benefits			benefits			benefits
			and SIP			benefits			and SIP			benefits
			(in millions)
	Change in benefit obligation:
	Benefit obligation at beginning of fiscal year		¥	1,383,933		¥	389,264		¥	1,433,161		¥	404,427		¥	225,361		¥	24,701		¥	283,224		¥	30,002
	Service cost			34,182			4,658			36,147			3,162			8,098			1,114			12,215			1,526
	Interest cost			20,510			6,138			17,448			5,016			10,716			1,135			13,467			1,352
Plan participants’ contributions			—			—			—			—			14			450			5			648
Acquisitions/ Divestitures			8			—			(807	)		—			—			—			9,359			—
Amendments			—			—			(32	)		—			302			—			980			—
Actuarial loss (gain)			65,369			15,583			26,417			(8,984	)		23,154			975			(24,716	)		(2,966	)
Benefits paid			(55,396	)		(11,216	)		(55,608	)		(11,202	)		(13,161	)		(1,673	)		(9,851	)		(2,136	)
Lump-sum payment			(15,445	)		—			(14,313	)		—			(440	)		—			(158	)		—
Translation adjustments and other			—			—			224,238	(2)		(392,419	)(2)		29,180			3,300			61,356			5,920
Benefit obligation at end of fiscal year			1,433,161			404,427			1,666,651			—			283,224			30,002			345,881			34,346
Change in plan assets:
Fair value of plan assets at beginning of fiscal year			1,317,074			433,710			1,462,406			458,171			182,791			13,370			233,081			18,185
Actual return (loss) on plan assets			174,467			64,893			124,355			34,472			24,787			1,866			43,561			3,611
Employer contributions			26,314			15,635			31,640			12,843			14,807			1,144			41,423			1,313
Acquisitions/ Divestitures			(53	)		—			176			—			—			—			—			—
Plan participants’ contributions			—			—			—			—			14			450			5			648
Benefits paid			(55,396	)		(11,216	)		(55,608	)		(11,202	)		(13,161	)		(1,673	)		(9,851	)		(2,136	)
Translation adjustments and other			—			(44,851	)(1)		441,360	(2)		(494,284	)(2)		23,843			3,028			59,876			4,224
Fair value of plan assets at end of fiscal year			1,462,406			458,171			2,004,329			—			233,081			18,185			368,095			25,845
Amounts recognized in the consolidated balance sheets:
Prepaid benefit cost		¥	60,279		¥	53,744		¥	357,817		¥	—		¥	3,850		¥	—		¥	54,600		¥	—
Accrued benefit cost			(31,034	)		—			(20,139	)		—			(53,993	)		(11,817	)		(32,386	)		(8,501	)
Net amount recognized		¥	29,245		¥	53,744		¥	337,678		¥	—		¥	(50,143	)	¥	(11,817	)	¥	22,214		¥	(8,501	)
Notes:
-1		MUTB partially withdrew assets from employee retirement benefit trusts, amount of ¥44,851 million, which were established for the payment of employees’ pension benefits. The related plan remains in an overfunded status as of March 31, 2013. No gains or losses have been recognized as a consequence of this transaction.
-2		MUTB separated the substitutional portion of its contributory CDBP and transferred the related obligation and assets to the Japanese government. The transferred obligation and assets to the Japanese government were ¥169,951 million and ¥52,971 million, respectively. Subsequent to the separation process, MUTB transferred the remaining corporate portion of its contributory CDBP into a non-contributory CDBP. The transferred obligation and assets to the non-contributory CDBP were ¥224,238 million and ¥441,313 million, respectively.
The aggregated accumulated benefit obligations of these plans at March 31, 2013 and 2014 were as follows:
		Domestic						Foreign offices
		subsidiaries						and subsidiaries
		2013			2014			2013			2014
		(in millions)
Aggregated accumulated benefit obligations		¥	1,808,001		¥	1,639,563		¥	262,200		¥	318,971
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, 2013 and 2014 were as follows:
		Domestic						Foreign offices
		subsidiaries						and subsidiaries
		2013			2014			2013			2014
		(in millions)
Projected benefit obligations		¥	96,622		¥	55,684		¥	264,204		¥	57,972
Accumulated benefit obligations			89,166			52,578			243,268			54,499
Fair value of plan assets			65,601			37,033			210,793			25,812
BTMU, MUTB, MUSHD, 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, 2012, 2013 and 2014 were ¥34,600 million, ¥11,234 million and ¥7,358 million, respectively. The ¥34,600 million charged to operations for the fiscal year ended March 31, 2012 mainly consisted of ¥20,512 million related to MUSHD.
The following table presents the amounts recognized in Accumulated OCI of the MUFG Group at March 31, 2013 and 2014:
		Domestic subsidiaries						Foreign offices and subsidiaries
		2013			2014			2013						2014
		Pension			Pension			Pension			Other			Pension			Other
		benefits			benefits			benefits			benefits			benefits			benefits
		and SIP			and SIP
		(in millions)
Net actuarial loss		¥	488,936		¥	336,312		¥	98,654		¥	8,314		¥	57,474		¥	3,585
Prior service cost			(46,580	)		(34,787	)		386			(100	)		1,129			(41	)
Gross amount recognized in Accumulated OCI			442,356			301,525			99,040			8,214			58,603			3,544
Taxes			(183,884	)		(133,606	)		(38,585	)		(3,212	)		(23,063	)		(767	)
Net amount recognized in Accumulated OCI		¥	258,472		¥	167,919		¥	60,455		¥	5,002		¥	35,540		¥	2,777
The following table presents OCI in the fiscal years ended March 31, 2013 and 2014:
		Domestic subsidiaries						Foreign offices and subsidiaries
		2013			2014			2013						2014
		Pension			Pension			Pension			Other			Pension			Other
		benefits			benefits			benefits			benefits			benefits			benefits
		and SIP			and SIP
		(in millions)
Net actuarial loss (gain) arising during the year		¥	(110,303	)	¥	(87,227	)	¥	11,326		¥	141		¥	(47,687	)	¥	(5,130	)
Prior service cost arising during the year			—			—			270			—			862			—
Losses (gains) due to amortization:
Net actuarial loss			(42,496	)		(23,941	)		(8,030	)		(715	)		(9,808	)		(776	)
Prior service cost			12,309			11,793			(54	)		59			(157	)		69
Net obligation at transition			—			—			—			(105	)		—			—
Curtailment and settlement			(2,600	)		(41,456	)		(95	)		3			—			—
Foreign currency translation adjustments			—			—			10,112			895			16,353			1,167
Total changes in Accumulated OCI		¥	(143,090	)	¥	(140,831	)	¥	13,529		¥	278		¥	(40,437	)	¥	(4,670	)
The following table presents the expected amounts that will be amortized from Accumulated OCI as components of net periodic benefit cost, before taxes, for the fiscal year ending March 31, 2015:
		Domestic			Foreign offices
		subsidiaries			and subsidiaries
		Pension			Pension			Other
		benefits			benefits			benefits
		and SIP
		(in millions)
Net actuarial loss		¥	14,265		¥	6,402		¥	117
Prior service cost			(8,932	)		109			(24	)
Total		¥	5,333		¥	6,511		¥	93
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, 2014 was as follows:
		Domestic			Foreign offices
		subsidiaries			and subsidiaries
Asset category		Pension			Pension			Other
		benefits			benefits			benefits
		and SIP
Japanese equity securities			37.4	%		0.4	%		—	%
Japanese debt securities			39.5			—			—
Non-Japanese equity securities			11.8			57.9			70
Non-Japanese debt securities			4.7			27.9			30
Real estate			—			9.7			—
Short-term assets			6.6			4.1			—
Total			100	%		100	%		100	%
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 below:
	Ÿ		Japanese equity securities: the rate for Japanese debt securities plus a premium for the risk associated with Japanese equity securities
	Ÿ		Japanese debt securities: economic growth rate of Japan
	Ÿ		Non-Japanese equity securities: the rate for non-Japanese debt securities plus a premium for the risk associated with non-Japanese equity securities
	Ÿ		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.
Cash flows
The MUFG Group expects to contribute to the plan assets for the fiscal year ending March 31, 2015 based upon its current funded status and expected asset return assumptions as follows:
For the pension benefits of domestic subsidiaries		¥	39.4 billion
For the pension benefits of foreign offices and subsidiaries			14.3 billion
For the other benefits of foreign offices and subsidiaries			2.3 billion
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			Foreign offices
		subsidiaries			and subsidiaries
		Pension			Pension			Other
		benefits			benefits			benefits
		and SIP
		(in millions)
Fiscal year ending March 31:
2015		¥	79,808		¥	11,242		¥	1,819
2016			81,641			12,173			1,935
2017			82,599			13,517			2,036
2018			82,740			14,614			2,160
2019			82,608			15,906			2,255
Thereafter (2020-2024)			410,139			108,484			12,778
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 of 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 institutions 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 and generally classified in Level 2 of the fair value hierarchy. Japanese pooled funds classified in Level 3 of the fair value hierarchy have underlying investments in non-Japanese debt securities and loans receivable whose fair values are measured by using significant unobservable inputs and there is inherent lack of the funds’ liquidity.
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. The funds for which the fair values are measured at their net asset value are classified either in Level 2 or Level 3 depending on the nature of any restrictions on the investor’s ability to redeem its investments at the measurement date or in the near future. Other investment funds classified in Level 3 of the fair value hierarchy mainly consist of certain private investment funds and 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 in the fair value hierarchy.
Other investments
Other investments mainly consist of call loans and the rest consist 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 depending on observability of the inputs to measure their fair values.
The following table presents the fair value of each major category of plan assets as of March 31, 2013 and 2014:
Pension benefits and SIP Investments:
At March 31, 2013		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		¥	76,763		¥	—		¥	—		¥	76,763		¥	—		¥	—		¥	—		¥	—
Non-Japanese government bonds			13,898			2,761			—			16,659			—			7,600			—			7,600
Other debt securities(1)			151			18,517			6,134			24,802			—			33,315			—			33,315
Japanese marketable equity securities(2)			661,832			148			—			661,980			—			—			—			—
Non-Japanese marketable equity securities			19,386			207			—			19,593			13,720			—			—			13,720
Japanese pooled funds:
Japanese marketable equity securities(2)			—			46,175			—			46,175			—			—			—			—
Japanese debt securities(1)			—			403,006			—			403,006			—			—			—			—
Non-Japanese marketable equity securities			—			190,367			—			190,367			—			—			—			—
Non-Japanese debt securities			—			65,087			6,846			71,933			—			—			—			—
Other			—			17,623			—			17,623			—			—			—			—
Total pooled funds			—			722,258			6,846			729,104			—			—			—			—
Other investment funds			—			98,520			48,631			147,151			91,582			65,068			14,486			171,136	(4)
Japanese general account of life insurance companies(3)			—			163,503			—			163,503			—			—			—			—
Other investments			1,636			79,386			—			81,022			839			4,488			1,983			7,310
Total		¥	773,666		¥	1,085,300		¥	61,611		¥	1,920,577		¥	106,141		¥	110,471		¥	16,469		¥	233,081
At March 31, 2014		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		¥	65,309		¥	—		¥	—		¥	65,309		¥	—		¥	—		¥	—		¥	—
Non-Japanese government bonds			19,799			2,041			—			21,840			—			13,443			—			13,443
Other debt securities(1)			523			11,798			5,983			18,304			—			52,463			—			52,463
Japanese marketable equity securities(2)			713,152			127			—			713,279			—			—			—			—
Non-Japanese marketable equity securities			12,166			1,122			—			13,288			24,515			—			—			24,515
Japanese pooled funds:
Japanese marketable equity securities(2)			—			26,792			—			26,792			—			—			—			—
Japanese debt securities(1)			—			400,132			—			400,132			—			—			—			—
Non-Japanese marketable equity securities			—			176,710			—			176,710			—			—			—			—
Non-Japanese debt securities			—			91,642			7,342			98,984			—			—			—			—
Other			—			13,026			—			13,026			—			—			—			—
Total pooled funds			—			708,302			7,342			715,644			—			—			—			—
Other investment funds			—			132,105			43,446			175,551			155,637			87,103			26,740			269,480	(4)
Japanese general account of life insurance companies(3)			—			173,398			—			173,398			—			—			—			—
Other investments			2,038			105,678			—			107,716			620			4,673			2,901			8,194
Total		¥	812,987		¥	1,134,571		¥	56,771		¥	2,004,329		¥	180,772		¥	157,682		¥	29,641		¥	368,095
Notes:
-1		These debt securities include debt securities issued by the MUFG Group in the amount of ¥471 million (0.02% of plan assets) and ¥401 million (0.02% of plan assets) to the pension benefits and SIPs at March 31, 2013 and 2014, respectively.
-2		Japanese marketable equity securities include common stocks issued by the MUFG Group in the amount of ¥6,864 million (0.32% of plan assets) and ¥7,354 million (0.31% of plan assets) to the pension benefits and SIPs at March 31, 2013 and 2014, respectively.
-3		“Japanese general accounts of life insurance companies” is a contract with life insurance companies that guarantees a return of approximately 1.17% from April 1, 2012 to March 31, 2013 and 1.24% from April 1, 2013 to March 31, 2014.
-4		Other investment funds of the foreign offices and subsidiaries are mainly comprised of ¥87,243 million of mutual funds and ¥13,531 million of real estate funds, and of ¥148,360 million of mutual funds and ¥25,486 million of real estate funds, which were held by MUAH at December 31, 2012 and 2013, respectively.
Other post retirement plan investments:
		Foreign offices and subsidiaries
		March 31, 2013												March 31, 2014
Assets category		Level 1			Level 2			Level 3			Total			Level 1			Level 2			Level 3			Total
		(in millions)
Other debt securities		¥	—		¥	3,619		¥	—		¥	3,619		¥	—		¥	5,548		¥	—		¥	5,548
Other investment funds(1)			8,901			—			—			8,901			13,531			—			—			13,531
Other investments			—			5,665			—			5,665			—			6,766			—			6,766
Total		¥	8,901		¥	9,284		¥	—		¥	18,185		¥	13,531		¥	12,314		¥	—		¥	25,845
Note:
-1		Other investment funds mainly consist of mutual funds and common collective funds.
The following tables present a reconciliation of plan assets measured at fair value using significant unobservable inputs (Level 3) during the fiscal years ended March 31, 2013 and 2014:
Pension benefits and SIP Investments:
		Domestic subsidiaries
Assets category		March 31,			Realized			Unrealized			Purchase,			Transfer			Transfer			March 31,
		2012			gains			gains			sales and			into			out of			2013
					(losses)			(losses)			settlements			Level 3			Level 3
		(in millions)
Other debt securities		¥	5,995		¥	18		¥	409		¥	(248	)	¥	—		¥	(40	)	¥	6,134
Non-Japanese marketable equity securities			87			30			—			(117	)		—			—			—
Japanese pooled funds:
Non-Japanese debt securities			5,807			—			1,042			(3	)		—			—			6,846
Other			2,501			—			—			—			—			(2,501	)		—
Total pooled funds			8,308			—			1,042			(3	)		—			(2,501	)		6,846
Other investment funds			41,097			(389	)		3,997			(4,503	)		8,429			—			48,631
Total		¥	55,487		¥	(341	)	¥	5,448		¥	(4,871	)	¥	8,429		¥	(2,541	)	¥	61,611
		Foreign offices and subsidiaries
Assets category		March 31,			Realized			Unrealized			Purchase,			Transfer			Transfer			March 31,
		2012			gains			gains			sales and			into			out of			2013
					(losses)			(losses)			settlements			Level 3			Level 3
		(in millions)
Other investment funds		¥	12,282		¥	—		¥	1,075		¥	1,129		¥	—		¥	—		¥	14,486
Other investments			344			—			1,208			431			—			—			1,983
Total		¥	12,626		¥	—		¥	2,283		¥	1,560		¥	—		¥	—		¥	16,469
		Domestic subsidiaries
Assets category		March 31,			Realized			Unrealized			Purchase,			Transfer			Transfer			March 31,
		2013			gains			gains			sales and			into			out of			2014
					(losses)			(losses)			settlements			Level 3			Level 3
		(in millions)
Other debt securities		¥	6,134		¥	(4	)	¥	(85	)	¥	(12	)	¥	—		¥	(50	)	¥	5,983
Japanese pooled funds:
Non-Japanese debt securities			6,846			—			483			13			—			—			7,342
Total pooled funds			6,846			—			483			13			—			—			7,342
Other investment funds			48,631			(2,616	)		1,381			(3,950	)		—			—			43,446
Total		¥	61,611		¥	(2,620	)	¥	1,779		¥	(3,949	)	¥	—		¥	(50	)	¥	56,771
		Foreign offices and subsidiaries
Assets category		March 31,			Realized			Unrealized			Purchase,			Transfer			Transfer			March 31,
		2013			gains			gains			sales and			into			out of			2014
					(losses)			(losses)			settlements			Level 3			Level 3
		(in millions)
Other investment funds		¥	14,486		¥	—		¥	6,688		¥	5,566		¥	—		¥	—		¥	26,740
Other investments			1,983			11			864			43			—			—			2,901
Total		¥	16,469		¥	11		¥	7,552		¥	5,609		¥	—		¥	—		¥	29,641
Defined Contribution Plans
The MUFG Group maintains several qualified defined contribution plans in its domestic and foreign offices and subsidiaries, all of which are administered in accordance with applicable local laws and regulations. Each office and subsidiary matches eligible employee contributions up to a certain percentage of benefits-eligible compensation per pay period, subject to plan and legal limits. Terms of the plan, including matching percentage and vesting periods, are individually determined by each office and subsidiary.
The cost of these defined contribution plans charged to operations for the fiscal years ended March 31, 2012, 2013 and 2014 was ¥5,775 million, ¥6,396 million and ¥8,443 million, respectively.

Other_Assets_And_Liabilities_T

Other Assets And Liabilities [Text Block]	12 Months Ended
	Mar. 31, 2014
Other Assets And Liabilities [Text Block]	'
	14	OTHER ASSETS AND LIABILITIES
	Major components of other assets and liabilities at March 31, 2013 and 2014 were as follows:
		2013		2014
		(in millions)
	Other assets:
	Accounts receivable:
	Receivables from brokers, dealers and customers for securities transactions	¥	1,217,164	¥	2,073,499
	Other		956,000		1,135,009
	Investments in equity method investees		1,273,847		1,620,168
	Prepaid benefit cost (Note 13)		117,873		412,417
	Cash collateral pledged (Note 8)		1,573,698		1,045,851
	Other		1,647,213		1,731,642
	Total	¥	6,785,795	¥	8,018,586
	Other liabilities:
	Accounts payable:
	Payables to brokers, dealers and customers for securities transactions	¥	1,047,514	¥	583,845
	Other		1,053,294		1,499,191
	Deferred tax liabilities		127,218		253,714
	Allowance for off-balance sheet credit instruments		55,915		69,871
	Accrued benefit cost (Note 13)		96,844		61,026
	Guarantees and indemnifications		50,433		44,824
	Cash collateral received (Note 8)		366,544		454,506
	Accrued and other liabilities		2,250,927		2,640,034
	Total	¥	5,048,689	¥	5,607,011
	Investments in equity method investees include marketable equity securities carried at ¥788,250 million and ¥1,033,806 million at March 31, 2013 and 2014, respectively. Corresponding aggregated market values were ¥1,203,241 million and ¥1,789,053 million, respectively. Investments in equity method investees also include investments in MSMS at ¥174,935 million and ¥163,520 million, and in Morgan Stanley at ¥664,031 million and ¥825,385 million at March 31, 2013 and 2014, respectively. As of March 31, 2014, the MUFG Group held approximately 21.91% of Morgan Stanley’s common stock.
	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 ¥580,474 million, ¥14,635 million and ¥32,824 million for the fiscal years ended March 31, 2012, 2013 and 2014, respectively. The impairment losses are included in Equity in earnings (losses) of equity method investees—net in the accompanying consolidated statements of income. See Note 2 for further details of the impairment losses recorded on investments in Morgan Stanley for the fiscal year ended March 31, 2012.
	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, 2013 and 2014, and for each of the three years in the period ended March 31, 2014 is as follows:
		2013		2014
		(in billions)
	Trading assets	¥	25,134	¥	26,712
	Federal funds sold and securities purchased under agreements to resell		13,206		11,072
	Securities borrowed		12,765		15,190
	Total assets		75,370		85,566
	Trading liabilities		12,459		11,485
	Securities sold under agreements to repurchase and Securities loaned		15,012		15,083
	Long-term borrowings		15,532		15,785
	Total liabilities		68,740		78,334
	Nonredeemable noncontrolling interests		317		329
		2012		2013		2014
		(in billions)
	Net revenues	¥	2,517	¥	2,271	¥	3,333
	Total non-interest expenses		2,084		2,105		2,812
	Income from continuing operations before income taxes		433		166		521
	Net income applicable to Morgan Stanley		244		100		349
	Summarized financial information of the MUFG Group’s equity method investees, other than Morgan Stanley as of March 31, 2013 and 2014, and for each of the three years in the period ended March 31, 2014 is as follows:
		2013		2014
		(in billions)
	Net loans	¥	7,673	¥	9,493
	Total assets		12,906		16,277
	Deposits		2,729		4,674
	Total liabilities		9,455		12,247
	Noncontrolling interests		181		457
		2012		2013		2014
		(in billions)
	Total interest income	¥	475	¥	444	¥	543
	Total interest expense		98		92		165
	Net interest income		377		352		378
	Provision for credit losses		51		55		59
	Income before income tax expense		128		163		214
	Net income		75		124		159

Offsetting_Of_Derivatives_Repu

Offsetting Of Derivatives, Repurchase Agreements, And Securities Lending Transactions [Text Block]	12 Months Ended
	Mar. 31, 2014
Offsetting Of Derivatives, Repurchase Agreements, And Securities Lending Transactions [Text Block]	'
	15	OFFSETTING OF DERIVATIVES, REPURCHASE AGREEMENTS, AND SECURITIES LENDING TRANSACTIONS
	The following tables present, as of March 31, 2013 and 2014, the gross and net of the derivatives, resale and repurchase agreements, and securities borrowing and lending transactions, including the related gross amount subject to an enforceable master netting arrangement or similar agreement not offset in the consolidated balance sheet. 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, 2013	Gross amounts of		Gross amounts			Net amounts		Gross amounts not offset in						Net amounts
		recognized		offset in the			presented in the		the consolidated balance sheet
		assets/liabilities		consolidated			consolidated
				balance sheet			balance sheet		Financial			Cash collateral
									instruments			received/pledged
		(in billions)
	Financial assets:
	Derivative assets	¥	14,648	¥	—		¥	14,648	¥	(12,341	)	¥	(283	)	¥	2,024
	Receivables under resale agreements		6,960		(1,300	)		5,660		(4,849	)		—			811
	Receivables under securities borrowing transactions		2,615		—			2,615		(1,815	)		—			800
	Total	¥	24,223	¥	(1,300	)	¥	22,923	¥	(19,005	)	¥	(283	)	¥	3,635
	Financial liabilities:
	Derivative liabilities	¥	14,867	¥	—		¥	14,867	¥	(12,134	)	¥	(1,207	)	¥	1,526
	Payables under repurchase		17,188		(1,300	)		15,888		(15,804	)		—			84
	agreements(1)
	Payables under securities lending transactions		3,993		—			3,993		(1,695	)		—			2,298
	Obligations to return securities received as collateral		3,035		—			3,035		(374	)		—			2,661
	Total	¥	39,083	¥	(1,300	)	¥	37,783	¥	(30,007	)	¥	(1,207	)	¥	6,569
		Gross amounts		Gross amounts			Net amounts		Gross amounts not offset in						Net amounts
		of recognized		offset in the			presented in the		the consolidated balance sheet
		assets/		consolidated			consolidated
	At March 31, 2014	liabilities		balance sheet			balance sheet		Financial			Cash collateral
									instruments			received/pledged
		(in billions)
	Financial assets:
	Derivative assets	¥	11,810	¥	—		¥	11,810	¥	(9,552	)	¥	(360	)	¥	1,898
	Receivables under resale agreements		10,346		(3,046	)		7,300		(6,502	)		(7	)		791
	Receivables under securities borrowing transactions		4,210		—			4,210		(3,614	)		—			596
	Total	¥	26,366	¥	(3,046	)	¥	23,320	¥	(19,668	)	¥	(367	)	¥	3,285
	Financial liabilities:
	Derivative liabilities	¥	11,765	¥	—		¥	11,765	¥	(9,437	)	¥	(984	)	¥	1,344
	Payables under repurchase agreements(1)		24,674		(3,046	)		21,628		(21,345	)		(5	)		278
	Payables under securities lending transactions		5,521		—			5,521		(4,795	)		(9	)		717
	Obligations to return securities received as collateral		3,971		—			3,971		(220	)		—			3,751
	Total	¥	45,931	¥	(3,046	)	¥	42,885	¥	(35,797	)	¥	(998	)	¥	6,090
	Note:
	-1	Payables under repurchase agreements in the above table include those under long-term repurchase agreements of ¥188,100 million and ¥360,220 million at March 31, 2013 and 2014, respectively, which are included in Long-term debt in the accompanying consolidated balance sheets.

Preferred_Stock_Text_Block

Preferred Stock [Text Block]	12 Months Ended
	Mar. 31, 2014
Preferred Stock [Text Block]	'
	16	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, 200,000,000 shares of Class 7 Preferred Stock and 1,000 shares of Class 11 Preferred Stock without par value as of March 31, 2014.
	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 Class 5 and 11 Preferred Stock have the right to receive a liquidation distribution at ¥2,500 and ¥1,000 per share, respectively, and do not have the right to participate in any further liquidation distributions.
	The number of shares of preferred stock issued and outstanding at March 31, 2012, 2013 and 2014 was as follows:
		Outstanding at		Net change		Outstanding at		Net change		Outstanding at
		March 31, 2012				March 31, 2013				March 31, 2014
		(number of shares)
	Preferred stock:
	Class 5		156,000,000		—		156,000,000		—		156,000,000
	Class 11		1,000		—		1,000		—		1,000
	Total		156,001,000		—		156,001,000		—		156,001,000
	None of the Class 6 and 7 Preferred Stock has been issued.
	The aggregate liquidation preference of preferred stock issued and outstanding at March 31, 2012, 2013 and 2014 was as follows:
		Aggregate amount at		Net change		Aggregate amount at		Net change		Aggregate amount at
		March 31, 2012				March 31, 2013				March 31, 2014
		(in millions)
	Preferred stock:
	Class 5	¥	390,000	¥	—	¥	390,000	¥	—	¥	390,000
	Class 11		1		—		1		—		1
	Total	¥	390,001	¥	—	¥	390,001	¥	—	¥	390,001
	Preferred stock included in Capital stock on the accompanying consolidated balance sheets at March 31, 2013 and 2014 was ¥442,100 million, which consisted of ¥122,100 million of Class 1, ¥125,000 million of Class 3 and ¥195,000 million of Class 5 Preferred Stock.
	On June 27, 2013, amendments to the Articles of Incorporation were made with respect to Class 3 Preferred Stock. As a result, the aggregate number of shares authorized to be issued by MUFG was reduced from 120,000,000 shares to nil and the authority to issue Class 3 Preferred Shares was removed.
	The portion of proceeds from the sale of shares that is designated as capital stock is determined by resolution of the Board of Directors of MUFG, however, at least 50% of the issue price of newly issued shares is required to be designated as capital stock at the time of incorporation or share issuance under the Company Law. Proceeds in excess of amounts designated as capital stock are designated as capital surplus. However, these provisions are not applied in a company reorganization, such as a merger, company split and share exchange. Preferred Stock Classes 8 through 12 were issued in exchange for UFJ Holdings’ preferred stock and recorded in Capital surplus.
	Preferred Stock Outstanding as of March 31, 2014
	Class 5 Preferred Stock
	Class 5 Preferred Stock is redeemable at the option of MUFG. At the time of issuance, the Board of Directors determines an issue price, an annual dividend (not to exceed ¥250 per share), and redemption terms, including a redemption price.
	Class 5 Preferred Stock was issued by means of a third-party allocation to Nippon Life Insurance Company, Meiji Yasuda Life Insurance Company, TAIYO LIFE INSURANCE COMPANY, DAIDO LIFE INSURANCE COMPANY, Tokio Marine & Nichido Fire Insurance Co., Ltd., NIPPONKOA Insurance Company, Limited and Aioi Nissay Dowa Insurance Company, Limited. The preferred stock does not have voting rights at any general meetings of shareholders, unless otherwise provided by applicable laws and regulations. Preferred dividends are set to be ¥115 per share annually, except as of March 31, 2009. Preferred dividends were ¥43 per share as of March 31, 2009.
	Class 11 Preferred Stock
	Class 11 preferred stockholders are entitled to receive annual non-cumulative dividends of ¥5.30 per share with priority over common stockholders.
	Class 11 Preferred Stock is convertible into fully paid shares of MUFG common stock at the election of holders from establishment of MUFG to July 31, 2014, except during certain excluded periods, at an initial conversion price of ¥918.70 per share of common stock, subject to anti-dilution adjustments. The conversion price was subject to reset annually on July 15 from 2006 to 2013 to the average market price of the common stock for the 30 trading day period, if the average market price was less than the conversion price prior to the reset but not less than ¥918.70 per share. The acquisition price and the acquisition floor price of Class 11 Preferred Stock were adjusted as ¥889.60 per share on December 15, 2008, ¥888.40 per share on January 14, 2009, ¥867.60 per share on December 21, 2009, and ¥865.90 per share on December 25, 2009, in accordance with the provisions relating to the adjustment of the acquisition price set forth in the terms and conditions of Class 11 Preferred Stock.
	All Class 11 Preferred Stock outstanding on August 1, 2014 will be mandatorily converted into shares of common stock at a conversion ratio of ¥1,000 divided by the higher of the average market price of the common stock for the 30 trading day period beginning 45 trading days prior to August 1, 2014 or ¥802.60.

Common_Stock_And_Capital_Surpl

Common Stock And Capital Surplus [Text Block]	12 Months Ended
	Mar. 31, 2014
Common Stock And Capital Surplus [Text Block]	'
	17	COMMON STOCK AND CAPITAL SURPLUS
	The changes in the number of issued shares of common stock during the fiscal years ended March 31, 2012, 2013 and 2014 were as follows:
		2012		2013		2014
		(shares)
	Balance at beginning of fiscal year		14,150,894,620		14,154,534,220		14,158,585,720
	Issuance of new shares of common stock by way of exercise of the stock acquisition rights		3,639,600		4,051,500		5,440,700
	Balance at end of fiscal year		14,154,534,220		14,158,585,720		14,164,026,420
	Under the Company Law, 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 Company Law permits Japanese companies, upon approval by the Board of Directors, to issue shares in the form of a “stock split,” as defined in the Company Law. Also, prior to April 1, 1991, Japanese companies were permitted to issue free share distributions. BTMU and MUTB 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 United States accounting practice to the cumulative free distributions made by BTMU and MUTB at March 31, 2014, would have increased capital accounts by ¥1,910,106 million with a corresponding decrease in unappropriated retained earnings.
	The Company Law 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 Company Law 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 issue expense, was included in the total Capital surplus balance.
	Treasury Stock
	The Company Law 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 Company Law 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.
	Parent Company Shares Held by Subsidiaries and Affiliated Companies
	At March 31, 2014, certain subsidiaries and affiliated companies owned shares of common stock of MUFG. Such shares are included in treasury stock in the accompanying consolidated balance sheets and deducted from the MUFG’s shareholders’ equity.

Retained_Earnings_Legal_Reserv

Retained Earnings, Legal Reserve And Dividends [Text Block]	12 Months Ended
	Mar. 31, 2014
Retained Earnings, Legal Reserve And Dividends [Text Block]	'
	18	RETAINED EARNINGS, LEGAL RESERVE AND DIVIDENDS
	In addition to the Company Law, Japanese banks, including BTMU and MUTB, 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 Company Law
	The Company Law 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 Company Law.
	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 Company Law.
	Transfer of Legal Reserve
	Under the Company Law
	Under the Company Law, 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 Company Law.
	Under the Company Law, Japanese companies, including MUFG, BTMU and MUTB, 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 Company Law and Banking Law at the company’s discretion.
	Under the Banking Law
	Under the Banking Law, Japanese banks, including BTMU and MUTB, were permitted, pursuant to a resolution by the shareholders at a general meeting, to make legal reserve set aside 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 Company Law.
	Unappropriated Retained Earnings and Dividends
	In addition to the provision that requires an appropriation for legal reserve as described above, the Company Law and the Banking Law impose certain limitations on the amount available for dividends.
	Under the Company Law, the amount available for dividends is based on the amount recorded in MUFG’s general books of account maintained in accordance with accounting principles generally accepted in Japan (“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 Company Law. Under the Banking Law, MUFG, BTMU and MUTB have to meet the minimum capital adequacy requirements and distributions of retained earnings of MUFG, BTMU and MUTB, which are otherwise distributable to shareholders, are restricted in order to maintain the minimum capital requirements.
	MUFG 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 Company Law, and Japanese GAAP.
	On October 1, 2005, MUFG started with common stock and preferred stock of ¥1,383,052 million, 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, 2014, was ¥4,402,718 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 Company Law and the Banking Law.
	In the accompanying consolidated statements of equity, dividends and appropriations to legal reserve shown for each fiscal year represent dividends approved and paid during the fiscal year and the related appropriation to legal reserve.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income (Loss) [Text Block]	12 Months Ended
	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Text Block]	'
	19	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, 2012, 2013 and 2014:
		2012			2013			2014
		(in millions)
	Accumulated other comprehensive income (loss), net of taxes:
	Net unrealized gains on investment securities:
	Balance at beginning of fiscal year	¥	308,071		¥	482,434		¥	1,106,316
	Net change during the fiscal year		174,363			623,882			166,407
	Balance at end of fiscal year	¥	482,434		¥	1,106,316		¥	1,272,723
	Net unrealized gains (losses) on derivatives qualifying for cash flow hedges:
	Balance at beginning of fiscal year	¥	(1,690	)	¥	(1,253	)	¥	2,170
	Net change during the fiscal year		437			3,423			-361
	Balance at end of fiscal year	¥	(1,253	)	¥	2,170		¥	1,809
	Defined benefit plans:
	Balance at beginning of fiscal year	¥	(307,711	)	¥	(401,923	)	¥	(322,537	)
	Net change during the fiscal year		(94,212	)		79,386			116,201
	Balance at end of fiscal year	¥	(401,923	)	¥	(322,537	)	¥	-206,336
	Foreign currency translation adjustments:
	Balance at beginning of fiscal year	¥	(627,331	)	¥	(675,658	)	¥	(211,602	)
	Net change during the fiscal year		(48,327	)		464,056			501,088
	Balance at end of fiscal year	¥	(675,658	)	¥	(211,602	)	¥	289,486
	Balance at end of fiscal year	¥	(596,400	)	¥	574,347		¥	1,357,682
	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, 2012, 2013 and 2014:
		2012									2013									2014
		Before tax			Tax			Net of tax			Before tax			Tax			Net of tax			Before tax			Tax			Net of tax
					(expense)									(expense)									(expense)
					or benefit									or benefit									or benefit
		(in millions)
	Net unrealized gains (losses) on investment securities:
	Net unrealized gains on investment securities	¥	296,347		¥	(118,638	)	¥	177,709		¥	1,108,665		¥	(390,387	)	¥	718,278		¥	453,494		¥	(178,200	)	¥	275,294
	Reclassification adjustment for gains included in net income before attribution of noncontrolling interests		(4,511	)		1,641			(2,870	)		(143,664	)		53,856			(89,808	)		(215,553	)		81,778			(133,775	)
	Net change		291,836			(116,997	)		174,839			965,001			(336,531	)		628,470			237,941			(96,422	)		141,519
	Net unrealized gains (losses) on investment securities attributable to noncontrolling interests								476									4,588									(24,888	)
	Net unrealized gains on investment securities attributable to Mitsubishi UFJ Financial Group								174,363									623,882									166,407
	Net unrealized gains (losses) on derivatives qualifying for cash flow hedges:
	Net unrealized gains (losses) on derivatives qualifying for cash flow		(178	)		99			(79	)		6,850			(2,693	)		4,157			3,615			(1,419	)		2,196
	hedges
	Reclassification adjustment for losses (gains) included in net income before attribution of noncontrolling interests		850			(334	)		516			(1,210	)		476			(734	)		(4,211	)		1,654			(2,557	)
	Net change		672			(235	)		437			5,640			(2,217	)		3,423			(596	)		235			(361	)
	Net unrealized gains on derivatives qualifying for cash flow hedges attributable to noncontrolling interests								—									—									—
	Net unrealized gains (losses) on derivatives qualifying for cash flow hedges attributable to Mitsubishi UFJ Financial Group								437									3,423									(361	)
		2012									2013									2014
		Before tax			Tax			Net of tax			Before tax			Tax			Net of tax			Before tax			Tax			Net of tax
					(expense)									(expense)									(expense)
					or benefit									or benefit									or benefit
		(in millions)
	Defined benefit plans:
	Defined benefit plans		(189,916	)		77,992			(111,924	)		81,568			(27,506	)		54,062			122,644			(45,709	)		76,935
	Reclassification adjustment for losses included in net income before attribution of noncontrolling interests		29,128			(11,419	)		17,709			41,642			(15,707	)		25,935			64,519			(23,806	)		40,713
	Net change		(160,788	)		66,573			(94,215	)		123,210			(43,213	)		79,997			187,163			(69,515	)		117,648
	Defined benefit plans attributable to noncontrolling interests								(3	)								611									1,447
	Defined benefit plans attributable to Mitsubishi UFJ Financial Group								(94,212	)								79,386									116,201
	Foreign currency translation adjustments:
	Foreign currency translation adjustments		(68,269	)		(1,528	)		(69,797	)		437,485			406			437,891			557,941			(50,516	)		507,425
	Reclassification adjustment for losses included in net income before attribution of noncontrolling interests		31,956			(11,702	)		20,254			48,311			(18,943	)		29,368			1,603			(898	)		705
	Net change		(36,313	)		(13,230	)		(49,543	)		485,796			(18,537	)		467,259			559,544			(51,414	)		508,130
	Foreign currency translation adjustments attributable to noncontrolling interests								(1,216	)								3,203									7,042
	Foreign currency translation adjustments attributable to Mitsubishi UFJ Financial Group								(48,327	)								464,056									501,088
	Other comprehensive income attributable to Mitsubishi UFJ Financial Group							¥	32,261								¥	1,170,747								¥	783,335
	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 income for the fiscal year ended March 31, 2014:
	Details of Accumulated OCI components	Amount reclassified out of			Line items in the consolidated
		Accumulated OCI			statements of income
		(in millions)
Net unrealized losses (gains) on investment securities
Net gains on sales and redemptions of securities available-for-sale	¥	(218,150	)	Investment securities gains—net
Impairment losses on investment securities		2,622		Investment securities gains—net
Other		(25	)
		(215,553	)	Total before tax
		81,778		Income tax expense
	¥	(133,775	)	Net of tax
Net unrealized losses (gains) on derivatives qualifying for cash flow hedges
Interest rate contracts	¥	(4,289	)	Interest income on Loans, including fees
Other		78
		(4,211	)	Total before tax
		1,654		Income tax expense
	¥	(2,557	)	Net of tax
Defined benefit plans
Net actuarial loss	¥	34,525	(1)
Prior service cost		(11,705	)(1)
Loss on settlements and curtailment, and other		41,699	(1)
		64,519		Total before tax
		(23,806	)	Income tax expense
	¥	40,713		Net of tax
Foreign currency translation adjustments	¥	1,603		Other non-interest expenses
		1,603		Total before tax
		(898	)	Income tax expense
	¥	705		Net of tax
Total reclassifications for the period	¥	(153,642	)	Total before tax
		58,728		Income tax expense
	¥	(94,914	)	Net of tax
Note:
-1	These Accumulated OCI components are included in the computation of net periodic benefit cost. See Note 13 for more information.

Noncontrolling_Interests_Text_

Noncontrolling Interests [Text Block]	12 Months Ended
	Mar. 31, 2014
Noncontrolling Interests [Text Block]	'
	20	NONCONTROLLING INTERESTS
	Deconsolidation of Subsidiaries
	The gains and losses due to deconsolidation of subsidiaries were recognized under “Other non-interest income” and “Other non-interest expenses,” respectively, in the accompanying consolidated statements of income. The amounts of net losses were ¥9,492 million and ¥17,585 million for the fiscal years ended March 31, 2012 and 2013 respectively, and the amount of net gains was ¥3,142 million for the fiscal year ended March 31, 2014.
	Changes in MUFG’s Ownership Interests in Subsidiaries
	The following table presents the effect on the MUFG’s shareholders’ equity from changes in ownership of subsidiaries resulting from transactions with the noncontrolling interest shareholders during the fiscal years ended March 31, 2012, 2013 and 2014:
		2012			2013			2014
		(in millions)
	Net income attributable to Mitsubishi UFJ Financial Group	¥	416,231		¥	1,069,124		¥	1,015,393
	Transactions between Mitsubishi UFJ Financial Group and the noncontrolling interest shareholders:
	Issuance of new shares of Mitsubishi UFJ Morgan Stanley Securities Co., Ltd. (Note 2)		(20,000	)		—			—
	Purchase of shares of Mitsubishi UFJ Merrill Lynch PB Securities Co., Ltd. from noncontrolling interest shareholders (Note 2)		—			(30,655	)		—
	Reorganization of Mitsubishi UFJ Morgan Stanley PB Securities Co., Ltd. (Note 2)		—			—			13,839
	Other		759			(412	)		204
	Net transfers from (to) the noncontrolling interest shareholders		(19,241	)		(31,067	)		14,043
	Change from net income attributable to Mitsubishi UFJ Financial Group and transactions between Mitsubishi UFJ Financial Group and the noncontrolling interest shareholders	¥	396,990		¥	1,038,057		¥	1,029,436

Regulatory_Capital_Requirement

Regulatory Capital Requirements [Text Block]	12 Months Ended
	Mar. 31, 2014
Regulatory Capital Requirements [Text Block]	'
	21		REGULATORY CAPITAL REQUIREMENTS
	Japan
	MUFG, BTMU, MUTB and MUSHD 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, BTMU, and MUTB 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.
	Under the capital adequacy guidelines applicable to a Japanese banking institution with international operations conducted by its foreign offices, from March 31, 2013 until March 30, 2014, the required minimum capital ratio is 3.5% for Common Equity Tier 1, 4.5% for Tier 1, and 8.0% for total capital, from March 31, 2014 until March 30, 2015, the required minimum capital ratio is 4.0% for Common Equity Tier 1, 5.5% for Tier 1, and 8.0% for total capital, and the requirement will be raised progressively over time.
	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 level of capitals.
	The Basel Committee revised the 1988 Accord (“Basel I”) in June 2004 and released “International Convergence of Capital Measurement and Capital Standards: A Revised Framework” (“Basel II”). In addition, 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, 2013 and 2014 in accordance with Basel III.
	Capital Ratios
	Basel III, as same as Basel II, 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. The framework of the 1988 Accord, Basel I is improved and expanded to be included in “minimum capital requirements” as the first pillar of Basel II and Basel III.
	As for the denominator of the capital ratio, Basel framework provides a few kinds of risk-sensitive approaches and a range of options for determining the 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 (“FIRB”)” 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. 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:
		Ÿ		the Internal Ratings-Based (“IRB”) Approach for credit risk
		Ÿ		the Internal Models Approach for market risk
		Ÿ		the Standardized Approach and AMA for operational risk
	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 is redefined, and consists of Common Equity Tier 1 capital and Additional Tier 1 capital. Common Equity Tier 1 capital is a new category of capital primarily consisting of common stocks, capital surplus, retained earnings, and Accumulated OCI. Regulatory adjustments including certain intangible fixed assets, such as goodwill, and defined-benefit pension fund assets will be deducted from Common Equity Tier 1. The amount of adjustments to be deducted will increase progressively over time. Additional Tier 1 capital generally consists of Basel III compliant preferred securities, other capital that meets Tier I requirements under Basel II standards, and net of regulatory adjustments. Subject to transitional measures, adjustments are made to Additional Tier 1 capital for items including intangible fixed assets, such as goodwill, and foreign currency translation adjustments, with the amounts of such adjustments to Additional Tier 1 capital progressively decreasing over time. Tier 2 capital generally consists of Basel III compliant deferred obligations, such as subordinated debts, capital that meet Tier II requirements under Basel II standards, certain allowances for credit losses and non-controlling interests in subsidiaries’ Tier 2 instruments. Subject to transitional measures, certain items including 45% of unrealized profit on securities available for sale and revaluation of land are deducted from Tier 2 capital with the deduction amounts progressively decreasing over time. Total capital is defined as the sum of Tier 1 and Tier 2 capital.
	Basel III will be adopted in accordance with transition arrangements. Examples of these transition arrangements include initially lower capital adequacy ratios that will increase progressively up to the Basel III adequacy levels as issued by BCBS. In addition, individual elements of capital will be phased out progressively over the same period of time to arrive at a capital base that is consistent with that defined by BCBS in Basel III.
	The risk-adjusted capital amounts and ratios of MUFG, BTMU and MUTB 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, 2013:
	Total capital (to risk-weighted assets):
	MUFG		¥	14,673,951		16.68	%	¥	7,037,491		8	%
	BTMU			12,034,152		17.51			5,497,550		8
	MUTB			2,035,576		17.79			914,984		8
	Tier1 capital (to risk-weighted assets):
	MUFG			11,214,815		12.74			3,958,589		4.5
	BTMU			9,015,774		13.11			3,092,372		4.5
	MUTB			1,575,140		13.77			514,678		4.5
	Common Equity Tier1 capital (to risk-weighted assets):
	MUFG			10,300,558		11.7			3,078,902		3.5
	BTMU			8,052,750		11.71			2,405,178		3.5
	MUTB			1,500,578		13.12			400,305		3.5
	At March 31, 2014:
	Total capital (to risk-weighted assets):
	MUFG		¥	15,394,342		15.53	%	¥	7,926,746		8	%
	BTMU			12,256,176		15.57			6,294,248		8
	MUTB			2,057,338		18.38			895,051		8
	Tier1 capital (to risk-weighted assets):
	MUFG			12,341,870		12.45			5,449,638		5.5
	BTMU			9,611,553		12.21			4,327,295		5.5
	MUTB			1,652,410		14.76			615,347		5.5
	Common Equity Tier1 capital (to risk-weighted assets):
	MUFG			11,153,032		11.25			3,963,373		4
	BTMU			8,696,589		11.05			3,147,124		4
	MUTB			1,590,690		14.21			447,525		4
	Stand-alone:
	At March 31, 2013:
	Total capital (to risk-weighted assets):
	BTMU		¥	11,501,001		18.52	%	¥	4,966,322		8	%
	MUTB			2,039,037		17.94			908,852		8
	Tier1 capital (to risk-weighted assets):
BTMU			8,685,464		13.99			2,793,556		4.5
MUTB			1,502,425		13.22			511,229		4.5
Common Equity Tier1 capital (to risk-weighted assets):
BTMU			7,301,380		11.76			2,172,766		3.5
MUTB			1,419,797		12.49			397,623		3.5
At March 31, 2014:
Total capital (to risk-weighted assets):
BTMU		¥	11,582,199		17.52	%	¥	5,287,273		8	%
MUTB			2,068,948		18.51			893,909		8
Tier1 capital (to risk-weighted assets):
BTMU			9,087,335		13.74			3,635,000		5.5
MUTB			1,606,684		14.37			614,563		5.5
Common Equity Tier1 capital (to risk-weighted assets):
BTMU			7,854,651		11.88			2,643,636		4
MUTB			1,533,733		13.72			446,955		4
MUMSS 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 Law 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 operations 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, 2013, MUMSS’s capital accounts less certain fixed assets of ¥388,163 million on a stand-alone basis were 315.9% of the total amounts equivalent to market, counterparty credit and operations risks. At March 31, 2014, its capital accounts less certain fixed assets of ¥377,325 million on a stand-alone basis and ¥400,570 million on a consolidated basis, were 292.9% and 295.0% of the total amounts equivalent to market, counterparty credit and operations risks, respectively. During the fiscal year ended March 31, 2014, Mitsubishi UFJ Morgan Stanley PB Securities Co., Ltd. became MUMSS’s consolidated subsidiary, and therefore was included in the calculation of the amounts and the ratios on a consolidated basis at March 31, 2014.
Management believes, as of March 31, 2014, that MUFG, BTMU, MUTB and other regulated securities subsidiaries met all capital adequacy requirements to which they are subject.
Note:
MUMSS’scapital ratio on a stand-alone basis calculated as a percentage of capital accounts less certain fixed assets against amounts equivalent to market, counterparty credit and operations risks at March 31, 2013 has been restated from 315.8% to 315.9%.
United States of America
In the United States of America, MUAH and its banking subsidiary MUB, BTMU’s largest subsidiaries operating outside Japan, are subject to various regulatory capital requirements administered by U.S. Federal banking agencies, including minimum capital requirements. Under the capital adequacy guidelines and the regulatory framework for prompt corrective action, MUAH and MUB must meet specific capital guidelines that involve quantitative measures of MUAH’s and MUB’s assets, liabilities, and certain off-balance sheet items as calculated under U.S. regulatory accounting practices. MUAH’s and MUB’s capital amounts and MUB’s prompt corrective action classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors.
Quantitative measures established by regulation to ensure capital adequacy require MUAH and MUB to maintain minimum ratios (set forth in the table below) of total and Tier I capital (as defined in the regulations) to risk-weighted assets (as defined) and of Tier I capital (as defined) to quarterly average assets (as defined).
As a result of a recent regulatory communication, which clarified the treatment of certain off-balance sheet credit exposures included in risk-weighted assets, MUAH updated the methodologies applied to the calculation of its regulatory capital ratios. MUAH applied the new methodology beginning with the MUAH’s December 31, 2012 capital ratios. As a result, the Tier 1 risk-based capital ratio decreased from 12.44% to 11.91% and the Total risk-based capital ratio decreased from 13.93% to 13.34% at December 31, 2012. The methodologies applied to the computation of MUB’s capital ratios were not affected.
The figures on the tables below are calculated according to Basel I as MUAH and MUB do not meet the criteria in the new U.S. rules which would make adoption of the new Basel II rules mandatory. MUAH’s and the MUB’s actual capital amounts and ratios are presented as follows:
		Actual					For capital
							adequacy purposes
		Amount		Ratio			Amount		Ratio
		(in millions, except percentages)
MUAH:
At December 31, 2012:
Total capital (to risk-weighted assets)		$	11,048		13.34	%	$	6,628		8	%
Tier I capital (to risk-weighted assets)			9,864		11.91			3,314		4
Tier I capital (to quarterly average assets)(1)			9,864		11.18			3,531		4
At December 31, 2013:
Total capital (to risk-weighted assets)		$	13,499		14.61	%	$	7,393		8	%
Tier I capital (to risk-weighted assets)			11,471		12.41			3,696		4
Tier I capital (to quarterly average assets)(1)			11,471		11.27			4,073		4
		Actual					For capital					Ratios OCC
							adequacy purposes					requires to be
												“well capitalized”
		Amount		Ratio			Amount		Ratio			Amount		Ratio
		(in millions, except percentages)
MUB:
At December 31, 2012:
Total capital (to risk-weighted assets)		$	10,362		13.17	%	$	6,294		8	%	$	7,867		10	%
Tier I capital (to risk-weighted assets)			9,192		11.68			3,147		4			4,720		6
Tier I capital (to quarterly average assets)(1)			9,162		10.51			3,498		4			4,373		5
At December 31, 2013:
Total capital (to risk-weighted assets)		$	12,990		14.91	%	$	6,970		8	%	$	8,713		10	%
Tier I capital (to risk-weighted assets)			11,274		12.94			3,485		4			5,228		6
Tier I capital (to quarterly average assets)(1)			11,274		11.13			4,051		4			5,063		5
Note:
-1		Excludes certain intangible assets.
Management believes, as of December 31, 2013, that MUAH and MUB met all capital adequacy requirements to which they are subject.
As of December 31, 2012 and 2013, the notification from the U.S. Office of the Comptroller of the Currency (“OCC”) categorized MUB as “well capitalized” under the regulatory framework for prompt corrective action. To be categorized as “well capitalized,” MUB must maintain a minimum total risk-based capital ratio of 10%, a Tier I risk-based capital ratio of 6%, and a Tier I leverage ratio of 5% as set forth in the table. There are no conditions or events since that notification that management believes have changed MUB’s category.

Earnings_Per_Common_Share_Appl

Earnings Per Common Share Applicable To Common Shareholders Of MUFG [Text Block]	12 Months Ended
	Mar. 31, 2014
Earnings Per Common Share Applicable To Common Shareholders Of MUFG [Text Block]	'
	22	EARNINGS PER COMMON SHARE APPLICABLE TO COMMON SHAREHOLDERS OF MUFG
	Reconciliations of net income 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, 2012, 2013 and 2014 are as follows:
		2012			2013			2014
		(in millions)
	Income (Numerator):
	Net income attributable to Mitsubishi UFJ Financial Group	¥	416,231		¥	1,069,124		¥	1,015,393
	Income allocable to preferred shareholders:
	Cash dividends paid		(17,940	)		(17,940	)		(17,940	)
	Changes in a foreign affiliated company’s interests in its subsidiary		—			—			(3,301	)
	Earnings applicable to common shareholders of Mitsubishi UFJ Financial Group		398,291			1,051,184			994,152
	Effect of dilutive instruments:
	Stock options and restricted stock units—Morgan Stanley		—			(336	)		(1,875	)
	Convertible preferred stock—Mitsubishi UFJ Merrill Lynch PB Securities Co., Ltd.		(589	)		—			—
	Earnings applicable to common shareholders of Mitsubishi UFJ Financial Group and assumed conversions	¥	397,702		¥	1,050,848		¥	992,277
		2012			2013			2014
		(thousands of shares)
	Shares (Denominator):
	Weighted average common shares outstanding		14,140,136			14,148,060			14,158,698
	Effect of dilutive instruments:
	Convertible preferred stock		1			1			1
	Stock options		16,683			21,019			21,381
	Weighted average common shares for diluted computation		14,156,820			14,169,080			14,180,080
		2012			2013			2014
		(in yen)
	Earnings per common share applicable to common shareholders of Mitsubishi UFJ Financial Group:
	Basic earnings per common share:
	Earnings applicable to common shareholders of Mitsubishi UFJ Financial Group	¥	28.17		¥	74.3		¥	70.21
	Diluted earnings per common share:
	Earnings applicable to common shareholders of Mitsubishi UFJ Financial Group	¥	28.09		¥	74.16		¥	69.98
	For the fiscal year ended March 31, 2012, stock options and restricted stock units issued by Morgan Stanley to purchase 57 million shares and convert into 21 million shares, respectively, could potentially dilute earnings per common share but were not included in the computation of diluted earnings per common share as they were antidilutive. All outstanding convertible preferred stock issued by Mitsubishi UFJ Merrill Lynch PB Securities Co., Ltd. were acquired by MUSHD and BTMU in December 2012 and converted into common stock.
	In computing the number of the potentially dilutive common shares for the fiscal years ended March 31, 2012, 2013 and 2014, Class 11 Preferred Stock has been based on the conversion price of ¥865.9 at March 31, 2012, 2013 and 2014.

Derivative_Financial_Instrumen

Derivative Financial Instruments [Text Block]	12 Months Ended
	Mar. 31, 2014
Derivative Financial Instruments [Text Block]	'
	23	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 of interest income and interest expense on hedged variable rate assets and liabilities as a result of interest rate fluctuations are expected to substantially offset 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.
	Derivatives Designated as Hedges
	The MUFG Group adopts hedging strategies and applies hedge accounting to certain derivative transactions entered by MUAH whose fiscal period ends on December 31.
	Cash Flow Hedges
	MUAH used interest rate swaps with a notional amount of ¥453.2 billion at December 31, 2013 to hedge the risk of changes in cash flows attributable to changes in the designated benchmark interest rate on LIBOR indexed loans. To the extent effective, payments received (or paid) under the swap contract offset fluctuations in interest income on loans caused by changes in the relevant LIBOR index. At December 31, 2013, the weighted average remaining life of the currently active cash flow hedges was approximately 4.02 years.
	For cash flow hedges, the effective portion of the gain or loss on the hedging instruments is reported as a component of OCI and reclassified into earnings in the same period or periods during which the hedged cash flows are recognized in net interest income. Gains and losses representing hedge ineffectiveness are recognized in earnings in the period in which they arise. At December 31, 2013, MUAH expects to reclassify approximately ¥6.7 billion of income from Accumulated OCI to net interest income during the year ending December 31, 2014. This amount could differ from amounts actually realized due to changes in interest rates, hedge terminations and the addition of other hedges subsequent to December 31, 2013.
	Notional Amounts of Derivative Contracts
	The following table summarizes the notional amounts of derivative contracts at March 31, 2013 and 2014:
		Notional amounts(1)
		2013			2014
		(in trillions)
	Interest rate contracts	¥	956.6		¥	962.5
	Foreign exchange contracts		155.2			169.5
	Equity contracts		3			3.1
	Commodity contracts		2.2			2.5
	Credit derivatives		6.6			7.1
	Others		1.9			2.7
	Total	¥	1,125.50		¥	1,147.40
	Note:
	-1	Includes both written and purchased position.
	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, 2013 and 2014:
		Fair value of derivative instruments
		March 31, 2013(1)(5)									March 31, 2014(1)(5)
		Not designated			Designated			Total			Not designated			Designated			Total
		as hedges(2)			as hedges(3)			derivatives(4)			as hedges(2)			as hedges(3)			derivatives(4)
		(in billions)
	Derivative assets:
	Interest rate contracts	¥	11,214		¥	2		¥	11,216		¥	8,616		¥	1		¥	8,617
	Foreign exchange contracts		3,193			—			3,193			2,916			—			2,916
	Equity contracts		104			—			104			149			—			149
	Commodity contracts		73			—			73			69			—			69
	Credit derivatives		62			—			62			57			—			57
	Others(6)		—			—			—			2			—			2
	Total derivative assets	¥	14,646		¥	2		¥	14,648		¥	11,809		¥	1		¥	11,810
	Derivative liabilities:
	Interest rate contracts	¥	11,205		¥	—		¥	11,205		¥	8,522		¥	1		¥	8,523
	Foreign exchange contracts		3,429			—			3,429			2,999			—			2,999
	Equity contracts		131			—			131			144			—			144
	Commodity contracts		64			—			64			60			—			60
	Credit derivatives		62			—			62			62			—			62
	Others(6)		(24	)		—			(24	)		(23	)		—			(23	)
	Total derivative liabilities	¥	14,867		¥	—		¥	14,867		¥	11,764		¥	1		¥	11,765
	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 except for (6).
	-3	The MUFG Group adopts hedging strategies and applies hedge accounting to certain derivative transactions entered into by MUAH. 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	Others include mainly bifurcated embedded derivatives carried at fair value, which are presented in Deposits and Long-term debt.
	Impact of Derivatives and Hedged Items on the Consolidated Statements of Income and Accumulated OCI
	The following tables provide more detailed information regarding the derivative-related impact on the accompanying consolidated statements of income by accounting designation for the fiscal years ended March 31, 2012, 2013 and 2014:
	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)
	Foreign exchange			Trading account			Total
	gains (losses)—net			profits (losses)—net
	(in billions)
Fiscal year ended March 31, 2012:
Interest rate contracts	¥	—		¥	160		¥	160
Foreign exchange contracts		(94	)		—			(94	)
Equity contracts		—			(47	)		(47	)
Commodity contracts		—			(1	)		(1	)
Credit derivatives		—			2			2
Others		(1	)		(36	)		(37	)
Total	¥	(95	)	¥	78		¥	(17	)
Fiscal year ended March 31, 2013:
Interest rate contracts	¥	—		¥	121		¥	121
Foreign exchange contracts		(92	)		—			(92	)
Equity contracts		—			(138	)		(138	)
Commodity contracts		—			4			4
Credit derivatives		—			(11	)		(11	)
Others		(2	)		(59	)		(61	)
Total	¥	(94	)	¥	(83	)	¥	(177	)
Fiscal year ended March 31, 2014:
Interest rate contracts	¥	—		¥	30		¥	30
Foreign exchange contracts		(51	)		—			(51	)
Equity contracts		—			(105	)		(105	)
Commodity contracts		—			3			3
Credit derivatives		—			(6	)		(6	)
Others		(2	)		(6	)		(8	)
Total	¥	(53	)	¥	(84	)	¥	(137	)
Gains and losses for derivatives designated as cash flow hedges
	For the fiscal year ended March 31,
	2012			2013			2014
	(in billions)
Gains (losses) recognized in Accumulated OCI on derivative instruments (Effective portion)
Interest rate contracts	¥	—		¥	7		¥	3
Total	¥	—		¥	7		¥	3
Gains (losses) reclassified from Accumulated OCI into income (Effective portion)
Interest rate contracts(1)	¥	(1	)	¥	1		¥	4
Total	¥	(1	)	¥	1		¥	4
Gains (losses) recognized in income on derivative instruments (Ineffective portion and amount excluded from effectiveness testing)
Interest rate contracts	¥	—		¥	—		¥	—
Total	¥	—		¥	—		¥	—
Note:
-1	Included in Interest income.
Embedded Derivatives
Features embedded in other non-derivative hybrid contracts are separated from the host contracts and measured at fair value when they are not clearly and closely related to the host contracts and meet the definition of a derivative. The change in the fair value of such an embedded derivative is recognized currently in earnings, unless it qualifies as a hedge. The fair value of the embedded derivative is presented in the accompanying consolidated balance sheets with the host contract. The MUFG Group accounts for credit-linked notes as host contracts with embedded derivatives and measures the entire contracts at fair value.
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 and credit-linked notes. 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 default swaps and credit-linked notes as of March 31, 2013 and 2014:
	Protection sold
	Maximum potential/Notional amount												Fair value
	by expiration period
At March 31, 2013:	1 year			1-5 years			Over			Total			(Asset)/
	or less						5 years						Liability(1)
	(in millions)
Single name credit default swaps:
Investment grade(2)	¥	488,834		¥	1,775,720		¥	102,613		¥	2,367,167		¥	(8,863	)
Non-investment grade		75,959			164,215			13,793			253,967			9,275
Not rated		10,807			4,024			—			14,831			(73	)
Total		575,600			1,943,959			116,406			2,635,965			339
Index and basket credit default swaps held by BTMU:
Investment grade(2)		34,479			47,599			116,173			198,251			600
Non-investment grade		—			940			—			940			—
Total		34,479			48,539			116,173			199,191			600
Index and basket credit default swaps held by MUSHD:
Investment grade(2)		7,680			367,814			9,000			384,494			(4,131	)
Non-investment grade		7,203			2,284			—			9,487			(153	)
Not rated		—			24,708			—			24,708			215
Total		14,883			394,806			9,000			418,689			(4,069	)
Total index and basket credit default swaps sold		49,362			443,345			125,173			617,880			(3,469	)
Total credit default swaps sold	¥	624,962		¥	2,387,304		¥	241,579		¥	3,253,845		¥	(3,130	)
Credit-linked notes(3)	¥	7,500		¥	1,505		¥	4,517		¥	13,522		¥	(12,741	)
	Protection sold
	Maximum potential/Notional amount												Fair value
	by expiration period
At March 31, 2014:	1 year			5-Jan			Over			Total			(Asset)/
	or less			years			5 years						Liability(1)
	(in millions)
Single name credit default swaps:
Investment grade(2)	¥	422,991		¥	1,952,552		¥	78,741		¥	2,454,284		¥	(30,634	)
Non-investment grade		49,579			180,168			2,750			232,497			1,326
Not rated		1,132			4,221			—			5,353			(74	)
Total		473,702			2,136,941			81,491			2,692,134			(29,382	)
Index and basket credit default swaps held by BTMU:
Investment grade(2)		940			83,816			166,629			251,385			(3,316	)
Non-investment grade		—			—			—			—			—
Total		940			83,816			166,629			251,385			(3,316	)
Index and basket credit default swaps held by MUSHD:
Investment grade(2)		122,837			339,606			1,000			463,443			(5,520	)
Non-investment grade		—			7,407			—			7,407			(779	)
Not rated		—			51,527			—			51,527			(487	)
Total		122,837			398,540			1,000			522,377			(6,786	)
Total index and basket credit default swaps sold		123,777			482,356			167,629			773,762			(10,102	)
Total credit default swaps sold	¥	597,479		¥	2,619,297		¥	249,120		¥	3,465,896		¥	(39,484	)
Credit-linked notes(3)	¥	—		¥	—		¥	4,546		¥	4,546		¥	(4,368	)
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.
-3	Fair value amounts shown represent the fair value of the hybrid instruments.
Single name credit default swaps—A 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, BTMU and MUSHD rating scale based upon the entity’s 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.
Credit-linked notes (“CLNs”)—The MUFG Group has invested in CLNs, which are hybrid instruments containing embedded derivatives, in which credit protection has been sold to the issuers of the notes. If there is a credit event of the reference entity underlying the CLN, the principal balance of the note may not be repaid in full to the MUFG Group. As part of its financing activities, MUSHD and other securities subsidiaries in Japan and overseas issue CLNs.
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 ¥3 billion and ¥2,779 billion, respectively, at March 31, 2013, and approximately ¥35 billion and ¥3,048 billion, respectively, at March 31, 2014.
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
Certain of the MUFG Group’s derivative instruments contain provisions that require the MUFG Group’s debt to maintain an investment grade credit rating from each of the major credit rating agencies. If the MUFG Group’s debt were to fall below investment grade, it would be in violation of these provisions, and the counterparties to the derivative instruments could request payments on early termination or demand immediate and ongoing full overnight collateralization on derivative instruments in net liability positions. The aggregate fair value of all derivative instruments with credit-risk-related contingent features that were in a liability position at March 31, 2013 and 2014 was approximately ¥3.6 trillion and ¥2.5 trillion, respectively, for which the MUFG Group has posted collateral of approximately ¥579 billion and ¥253 billion, respectively, in the normal course of business. The amount of additional collateral and early termination amount which could be requested if the MUFG Group’s debt falls below investment grade was ¥116 billion and ¥23 billion, respectively, as of March 31, 2013 and ¥125 billion and ¥43 billion, respectively, as of March 31, 2014.

Obligations_Under_Guarantees_A

Obligations Under Guarantees And Other Off-Balance Sheet Instruments [Text Block]	12 Months Ended
	Mar. 31, 2014
Obligations Under Guarantees And Other Off-Balance Sheet Instruments [Text Block]	'
	24	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, 2013 and 2014. 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 borrower fails to fulfill its obligations. The following table includes guarantees of ¥160.7 billion and ¥183.7 billion at March 31, 2013 and 2014, 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		Amount by expiration period
		potential/
		Contractual
		or Notional
	At March 31, 2013:	amount		1 year		1-5 years		Over
				or less				5 years
		(in billions)
	Standby letter of credit and financial guarantees	¥	3,849	¥	2,101	¥	1,094	¥	654
	Performance guarantees		2,214		1,509		627		78
	Derivative instruments(1)		144,471		99,846		35,784		8,841
	Liabilities of trust accounts		4,839		3,969		300		570
	Total	¥	155,373	¥	107,425	¥	37,805	¥	10,143
		Maximum		Amount by expiration period
		potential/
		Contractual
		or Notional
	At March 31, 2014:	amount		1 year		1-5 years		Over
				or less				5 years
		(in billions)
	Standby letter of credit and financial guarantees	¥	3,774	¥	2,082	¥	1,116	¥	576
	Performance guarantees		2,571		1,766		727		78
	Derivative instruments(1)		68,811		33,281		26,432		9,098
	Liabilities of trust accounts		7,751		6,580		343		828
	Total	¥	82,907	¥	43,709	¥	28,618	¥	10,580
	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 tracks 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, 2013 and 2014 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 the certain agreements with trust creditors that have provisions limiting the MUFG Group’s responsibility 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 responsibility to the trust account assets. At March 31, 2013 and 2014, there were liabilities of ¥4,839 billion and ¥7,751 billion, respectively, in the segregated records of trust accounts including the amounts related to liabilities with provisions limiting trustee responsibility. Liabilities of trust accounts principally included 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; and the MUFG Group claims its recourse for its temporary payments against the trust account assets and the beneficiaries.
	Carrying Amount
	At March 31, 2013 and 2014, the carrying amounts of the liabilities related to guarantees and similar instruments set forth above were ¥1,695,799 million and ¥1,441,092 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 ¥1,645,258 million and ¥1,396,178 million as of March 31, 2013 and 2014, respectively. Credit derivatives sold by the MUFG Group at March 31, 2013 and 2014 are excluded from this presentation, as they are disclosed in Note 23. In addition, Other liabilities also include an allowance for off-balance sheet instruments of ¥27,721 million and ¥35,457 million at March 31, 2013 and 2014, 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, 2013 and 2014. 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 bear no relationship to the anticipated losses, if any, on these guarantees.
				Amount by borrower grade
	At March 31, 2013:	Maximum		Normal		Close		Likely to		Not
		potential/				Watch(1)		become		rated
		Contractual						Bankrupt
		or Notional						or Legally/
		amount						Virtually
								Bankrupt(2)
		(in billions)
	Standby letters of credit and financial guarantees	¥	3,849	¥	3,540	¥	182	¥	11	¥	116
	Performance guarantees		2,214		2,152		43		2		17
	Total	¥	6,063	¥	5,692	¥	225	¥	13	¥	133
				Amount by borrower grade
	At March 31, 2014:	Maximum		Normal		Close		Likely to		Not
		potential/				Watch(1)		become		rated
		Contractual						Bankrupt
		or Notional						or Legally/
		amount						Virtually
								Bankrupt(2)
		(in billions)
	Standby letters of credit and financial guarantees	¥	3,774	¥	3,500	¥	171	¥	9	¥	94
	Performance guarantees		2,571		2,493		53		8		17
	Total	¥	6,345	¥	5,993	¥	224	¥	17	¥	111
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 making use of 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.
The MUFG Group conducts securities lending transactions for institutional customers as a fully disclosed agent. At times, securities lending indemnifications are issued to guarantee that a security lending customer will be made whole in the event the borrower does not return the security subject to the lending agreement and collateral held is insufficient to cover the market value of the security. All lending transactions are collateralized, primarily by cash. At March 31, 2014, the MUFG Group had no exposure that would require it to pay under this securities lending indemnification, since the collateral market value exceeds the securities lent.
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 financial 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. At March 31, 2014, approximately 68% of these commitments will expire within one year, 30% from one year to five years and 2% after five years. The table below presents the contractual amounts with regard to such instruments at March 31, 2013 and 2014:
	2013		2014
	(in billions)
Commitments to extend credit	¥	66,702	¥	72,240
Commercial letters of credit		706		855
Commitments to make investments		94		81
Other		—		21
Commitments to extend credit, which generally have fixed expiration dates or other termination clauses, are legally 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.
Commitments to make investments are legally binding contracts to make additional contributions to corporate recovery or private equity investment funds in accordance with limited partnership agreements. Some of these funds, in which the MUFG Group has significant variable interests, are described in Note 25.

Variable_Interest_Entities_Tex

Variable Interest Entities [Text Block]	12 Months Ended
	Mar. 31, 2014
Variable Interest Entities [Text Block]	'
	25	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, 2013 and 2014:
	Consolidated VIEs	Consolidated assets
	At March 31, 2013:	Total			Cash and			Interest-earning			Trading			Investment			Loans			All other
					due from			deposits in			account			securities						assets
					banks			other banks			assets
		(in millions)
	Asset-backed conduits	¥	5,641,295		¥	25,520		¥	72,968		¥	966		¥	601,444		¥	4,927,509		¥	12,888
	Investment funds		2,567,049			47,176			18,113			2,322,430			8,643			173			170,514
	Special purpose entities created for structured financing		175,627			1,427			2,188			—			—			156,903			15,109
	Repackaged instruments		56,902			—			—			54,154			—			2,748			—
	Securitization of the MUFG Group’s assets		1,756,940			—			—			—			—			1,720,066			36,874
	Trust arrangements		1,006,961			—			3,601			277			91,707			909,146			2,230
	Others		100,013			295			681			—			85			64,948			34,004
	Total consolidated assets before elimination		11,304,787			74,418			97,551			2,377,827			701,879			7,781,493			271,619
	The amounts eliminated in consolidation		(1,127,690	)		(71,726	)		(71,464	)		(1,237	)		(6	)		(966,616	)		(16,641	)
	Total consolidated assets	¥	10,177,097		¥	2,692		¥	26,087		¥	2,376,590		¥	701,873		¥	6,814,877		¥	254,978
		Consolidated liabilities
		Total			Deposits			Other short-term			Long-term			All other
								borrowings			debt			liabilities
		(in millions)
	Asset-backed conduits	¥	5,645,471		¥	—		¥	4,868,648		¥	330,171		¥	446,652
	Investment funds		232,533			—			1,348			12,246			218,939
	Special purpose entities created for structured financing		173,928			—			5,241			166,810			1,877
	Repackaged instruments		57,452			—			—			56,236			1,216
	Securitization of the MUFG Group’s assets		1,741,837			—			25,000			1,715,823			1,014
	Trust arrangements		1,003,916			1,001,815			—			—			2,101
	Others		99,505			—			64,216			35,143			146
	Total consolidated liabilities before elimination		8,954,642			1,001,815			4,964,453			2,316,429			671,945
	The amounts eliminated in consolidation		(4,251,981	)		—			(3,078,982	)		(1,146,963	)		(26,036	)
	The amount of liabilities with recourse to the general credit of MUFG Group		(3,117,515	)		(1,001,815	)		(1,845,698	)		(2,772	)		(267,230	)
	Liabilities of consolidated VIEs for which creditors or beneficial interest holders do not have recourse to the general credit of the MUFG Group	¥	1,585,146		¥	—		¥	39,773		¥	1,166,694		¥	378,679
	Consolidated VIEs	Consolidated assets
	At March 31, 2014:	Total			Cash and			Interest-earning			Trading			Investment			Loans			All other
					due from			deposits in			account			securities						assets
					banks			other banks			assets
		(in millions)
	Asset-backed conduits	¥	6,202,924		¥	30,484		¥	117,116		¥	1,783		¥	762,103		¥	5,277,749		¥	13,689
	Investment funds		2,433,575			46,198			36,076			2,190,419			10,270			—			150,612
	Special purpose entities created for structured financing		257,874			1,840			2,794			—			—			236,115			17,125
	Repackaged instruments		29,296			—			—			29,296			—			—			—
	Securitization of the MUFG Group’s assets		1,473,901			—			—			—			—			1,439,002			34,899
	Trust arrangements		1,325,602			—			1,528			139			95,339			1,226,221			2,375
	Others		84,882			342			680			—			73			48,914			34,873
	Total consolidated assets before elimination		11,808,054			78,864			158,194			2,221,637			867,785			8,228,001			253,573
	The amounts eliminated in consolidation		-1,428,412			-75,697			-125,036			-1,883			-6			-1,208,348			-17,442
	Total consolidated assets	¥	10,379,642		¥	3,167		¥	33,158		¥	2,219,754		¥	867,779		¥	7,019,653		¥	236,131
		Consolidated liabilities
		Total			Deposits			Other short-term			Long-term			All other
								borrowings			debt			liabilities
		(in millions)
	Asset-backed conduits	¥	6,227,784		¥	—		¥	5,239,304		¥	467,005		¥	521,475
	Investment funds		87,702			—			—			422			87,280
	Special purpose entities created for structured financing		174,055			—			1,993			169,231			2,831
	Repackaged instruments		29,181			—			—			29,000			181
	Securitization of the MUFG Group’s assets		1,452,857			—			23,800			1,428,202			855
	Trust arrangements		1,322,103			1,320,209			—			—			1,894
	Others		84,527			—			48,368			36,025			134
	Total consolidated liabilities before elimination		9,378,209			1,320,209			5,313,465			2,129,885			614,650
	The amounts eliminated in consolidation		(4,196,910	)		—			(2,988,582	)		(1,163,047	)		(45,281	)
	The amount of liabilities with recourse to the general credit of MUFG Group		(3,910,836	)		-1,320,209			(2,280,662	)		—			(309,965	)
	Liabilities of consolidated VIEs for which creditors or beneficial interest holders do not have recourse to the general credit of the MUFG Group	¥	1,270,463		¥	—		¥	44,221		¥	966,838		¥	259,404
In general, the creditors or beneficial interest holders of consolidated VIEs have recourse only to the assets of those VIEs of which they are creditors or beneficial interest holders, and do not have recourse to other assets of the MUFG Group, except where the MUFG Group is also contractually required to provide credit enhancement or program-wide liquidity.
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, 2013 and 2014:
Non-consolidated VIEs							On-balance sheet assets															On-balance sheet
																						liabilities
At March 31, 2013:	Total assets			Maximum			Total			Trading			Investment			Loans			All			Total		All other
				exposure						account			securities						other					liabilities
										assets									assets
	(in millions)
Asset-backed conduits	¥	12,926,458		¥	3,072,591		¥	2,256,903		¥	3,384		¥	363,521		¥	1,889,998		¥	—		¥	—	¥	—
Investment funds		25,517,222			744,935			634,662			168,580			149,036			317,046			—			1,186		1,186
Special purpose entities created for structured financing		20,978,132			3,048,178			2,346,557			136,118			85,254			2,124,202			983			466		466
Repackaged instruments		13,097,513			1,638,067			1,546,726			106,661			1,181,828			258,237			—			—		—
Trust arrangements		14,866			13,589			12,740			—			—			12,740			—			5,739		5,739
Others		29,381,902			2,174,939			1,714,409			66,563			286,937			1,353,826			7,083			99		99
Total	¥	101,916,093		¥	10,692,299		¥	8,511,997		¥	481,306		¥	2,066,576		¥	5,956,049		¥	8,066		¥	7,490	¥	7,490
Non-consolidated VIEs							On-balance sheet assets															On-balance sheet
																						liabilities
At March 31, 2014:	Total assets			Maximum			Total			Trading			Investment			Loans			All			Total		All other
				exposure						account			securities						other					liabilities
										assets									assets
	(in millions)
Asset-backed conduits	¥	16,114,320		¥	3,826,653		¥	2,879,545		¥	1,851		¥	512,835		¥	2,364,858		¥	1		¥	217	¥	217
Investment funds		24,216,292			844,762			735,423			100,099			300,295			326,860			8,169			—		—
Special purpose entities created for structured financing		27,811,920			3,305,869			2,586,162			138,023			84,964			2,361,243			1,932			1,788		1,788
Repackaged instruments		9,106,418			2,132,268			2,034,180			202,209			1,536,859			295,112			—			—		—
Trust arrangements		26,795			23,680			22,940			—			—			22,940			—			5,471		5,471
Others		50,444,297			2,720,245			2,113,300			129,020			100,000			1,884,280			—			125		125
Total	¥	127,720,042		¥	12,853,477		¥	10,371,550		¥	571,202		¥	2,534,953		¥	7,255,293		¥	10,102		¥	7,601	¥	7,601
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 to 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 in 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 to the entities is only to provide financing with other third parties and it does not have the power to direct the activities of the conduits. Consequently, the MUFG Group does not consolidate the entities used in these programs.
Investment Funds
On February 2010, the FASB issued an accounting standards update that indefinitely defers the application of the current guidance for consolidation of VIEs on entities that are deemed as investment companies, which include most of corporate recovery funds, private equity funds, and investment trusts. For VIEs that are considered investment companies, the MUFG Group determines whether it is the primary beneficiary by evaluation of whether it absorbs a majority of expected losses, receives a majority of expected residual returns, or both.
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 issuers 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. In some cases, the general partners of the partnerships are entities that have no substantive decision making ability. The fund managers that establish these partnerships assume investment management and day-to-day operation by entering into asset management contracts with the general partners. These partnerships are, therefore, financing vehicles and as such are considered as VIEs. In other cases, the general partners have substantive decision making ability but the partnerships are considered as VIEs when the general partners’ equity investments in the partnerships are considered as non-substantive, usually based on the percentage interest held, and they do not have substantive limited partner interests.
The MUFG Group mostly serves as a limited partner in corporate recovery funds. While the MUFG Group’s share in partnership interest is generally insignificant, in certain cases, the MUFG Group is the only limited partner and it consolidates these partnerships as the primary beneficiary.
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. The general partners of the partnerships in some cases are entities that have no substantive decision making ability. The fund managers that establish these partnerships assume investment management and day-to-day operation by entering into asset management contracts with the general partners. These partnerships are, therefore, financing vehicles and as such are considered as VIEs. In other cases, the general partners have substantive decision making ability but the partnerships are considered VIEs because the general partners’ equity investments in the partnerships are disproportionate to their voting rights and the limited partners have the majority of the economics without any voting rights. The MUFG Group consolidates the private equity funds when it owns a majority of the interests issued by the private equity funds.
The MUFG Group participates in these partnerships as a general partner or limited partner. While the MUFG Group’s share in partnership interests is generally limited, in certain cases, the MUFG Group provides most of the financing to the partnership. The MUFG Group consolidates these funds as the primary beneficiary because it absorbs a majority of the expected losses or receives a majority of the expected residual returns.
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. Based on the deferral requirements of the current guidance, the MUFG Group consolidates investment trusts when it absorbs a majority of the expected losses or receives a majority of the expected residual returns.
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. Assessment as to whether the MUFG Group is the primary beneficiary is required under the current guidance. In most cases, the MUFG Group’s participation to 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.
Other Investment Funds
The MUFG Group’s investments in VIEs through MUAH primarily consist of equity investments in low income housing credit (“LIHC”) structures, designed to generate a return primarily through the realization of federal tax credits. MUAH considers itself as the primary beneficiary of certain types of LIHC investments.
LIHC Unguaranteed Syndicated Investment Funds
MUAH creates the investment funds, serves as the managing investor member, and sells limited investor member interests to third parties. MUAH receives benefits through income from the structuring of these funds, servicing fees for managing the funds and, as an investor member, tax benefits and tax credits to reduce the MUAH tax liability. MUAH considers itself to be the primary beneficiary and consolidated them upon adoption of the current guidance because, as a sponsor and managing member of the funds, it has the power to direct activities that most significantly impact the funds’ economic performance and also has the obligation to absorb losses of the funds that could potentially be significant to the funds.
LIHC Guaranteed Syndicated Investment Funds
MUAH also forms limited liability companies, which in turn invest in LIHC operating partnerships, to create LIHC guaranteed syndicated investment funds. Interests in these funds are sold to third parties who pay a premium for a guaranteed return. MUAH earns structuring fees from the sale of these funds and asset management fees. MUAH serves as the funds’ sponsor and non-member asset manager, and also guarantees a minimum rate of return throughout the investment term, therefore, it directs the activities that most significantly impact the funds’ economic performance and also has an obligation to absorb losses pertaining to its minimum rate of return guarantee to investors. Therefore, the MUFG Group is considered as the primary beneficiary of these funds and consolidates them.
Special Purpose Entities Created for Structured Financing
This category primarily comprises the following:
Leveraged Leasing 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. In some cases, the entities are 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 to 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 clients 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 where the general partner effectively has no power to direct the activities that most significantly impact the economic performance because an equity holder of the general partner serves a perfunctory role. Therefore, these vehicles are considered as VIEs. The subordinated financing of these vehicles 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 to these vehicles 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 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. These entities are designed to have non-substantive power to direct the activities that most significantly impact the economic performance because the general partner or an equity holder serves a perfunctory role. The entities are typically funded by senior and subordinated financing where the original owners of the 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 to these vehicles 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 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 CDOs and synthetic CDOs. These special purpose 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 the economic performance. These special purpose 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 special purpose 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
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 of 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.
Trust Arrangements
The MUFG Group offers, primarily through its wholly-owned trust banking subsidiary, MUTB, 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, except for the case mentioned below, because it merely receives fees for compensation of its services on terms that are customary for these activities and the fees are insignificant relative to the total amount of the entities’ economic performance and variability. Therefore, the MUFG Group does not consolidate these entities.
With respect to the jointly operated designated money in trusts, MUTB pools money from investors or trust beneficiaries and determines how best to invest it. MUTB typically invests in high-quality financial assets, including government bonds, corporate bonds and corporate loans including loans to MUTB and receives fees as compensation for services. In this role as a sponsor of these products, MUTB provides guarantees under which it is required to compensate a loss on the stated principal of the trust beneficial interests. MUTB is considered as the primary beneficiary of these products because it is exposed to a potentially significant amount of losses and also has the power to direct activities of these products that most significantly impact the economic performance. Upon consolidation of the jointly operated designated money in trusts, the certificates issued to the trust beneficiaries are accounted for as deposit liabilities as the products are structured and marketed to customers similar to MUTB’s term deposit products.
MUTB considers the likelihood of incurring losses on the face value guarantee to be highly remote. In the trusts’ operational history that extends over decades, the face value guarantee has never been called upon. The variability in fair value of the net assets of jointly operated designated money in trusts has been primarily affected by the fluctuations in interest rates, and the majority of such variability has been absorbed by general investors.
Others
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 companies 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 to 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 financing vehicles, these financing vehicles are not considered as the MUFG Group’s subsidiaries.
Troubled Borrowers
During the normal course of business, the borrowers from the MUFG Group may experience financial difficulties and sometimes enter into certain transactions that require the MUFG Group to assess whether they would be considered as VIEs due to their difficult financial position. While in most cases such borrowers are not considered as VIEs when the transactions take place, in limited circumstances they are considered as VIEs due to insufficient equity investment at risk. In all cases, however, the MUFG Group is not considered as the primary beneficiary because the power to direct activities that most significantly impact the economic performance of the troubled borrowers resides with management of the troubled borrowers, and the MUFG Group, as a lender, does not have power over or assume any role in management. Therefore, the MUFG Group does not consolidate these troubled borrowers.

Commitments_And_Contingent_Lia

Commitments And Contingent Liabilities [Text Block]	12 Months Ended
	Mar. 31, 2014
Commitments And Contingent Liabilities [Text Block]	'
	26	COMMITMENTS AND CONTINGENT LIABILITIES
	Lease Commitments
	The MUFG Group leases certain technology systems, office space and equipment under noncancelable agreements expiring through the fiscal year 2046.
	Future minimum rental commitments for noncancelable leases at March 31, 2014 were as follows:
		Capitalized			Operating
		leases			leases
		(in millions)
	Fiscal year ending March 31:
	2015	¥	7,640		¥	85,660
	2016		4,561			71,855
	2017		3,271			63,872
	2018		1,640			59,021
	2019		893			53,614
	2020 and thereafter		4,642			390,208
	Total minimum lease payments		22,647		¥	724,230	(1)
	Amount representing interest		(2,528	)
	Present value of minimum lease payments	¥	20,119
	Note:
	-1	One of MUFG’s subsidiaries has entered into non-cancelable operating lease agreements which will commence in April, 2016. The total minimum lease payments of ¥30,247 million under these commitments have been included in the above.
	Total rental expense for the fiscal years ended March 31, 2012, 2013 and 2014 was ¥97,105 million, ¥99,817 million and ¥103,754 million, respectively.
	Repayment of Excess Interest
	The Japanese government implemented regulatory reforms affecting the consumer lending industry. In December 2006, the Diet passed legislation to reduce the maximum permissible interest rate under the Investment Deposit and Interest Rate Law from 29.2% per annum to 20% per annum. The reduction in interest rates was implemented in June 2010. The regulatory reforms also included amendments to the Money Lending Business Act which, effective June 18, 2010, abolished the so-called “gray-zone interest.” Gray-zone interest refers to interest rates exceeding the limits stipulated by the Interest Rate Restriction Act (between 15% per annum to 20% per annum depending on the amount of principal). Under the regulatory reforms, all interest rates for loans originated after this reform are subject to the lower limits imposed by the Interest Rate Restriction Act. Furthermore, the new regulations require stringent review procedures for consumer finance companies before lending, and with the exception of certain provisions, one of those new regulations introduces a limit on aggregate credit extensions to one-third of the borrower’s annual income.
	Formerly, consumer finance companies were able to charge interest rates exceeding the limits stipulated by the Interest Rate Restriction Act so long as the payment was made voluntarily by the borrowers, and the lender complied with various notice and other requirements. Accordingly, MUFG’s consumer finance subsidiaries and equity method investees offered loans at interest rates above the Interest Rate Restriction Act. Upon the implementation of the regulatory reforms in June 2010, they lowered the interest rates for loans originated after this reform to below the Interest Rate Restriction Act.
	In 2006, the Supreme Court of Japan passed decisions in a manner more favorable to borrowers requiring reimbursement of previously paid interest exceeding the limits stipulated by the Interest Rate Restriction Act in certain circumstances. Borrowers’ claims for reimbursement of excess interest arose after such decisions and other regulatory changes. 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 ¥77,640 million and ¥54,068 million as of March 31, 2013 and 2014, respectively. Provision (reversal) related to the allowance is included in Other non-interest expenses in the accompanying consolidated statements of income. For the fiscal years ended March 31, 2012, 2013 and 2014, an MUFG’s equity method investee had a negative impact of ¥19,326 million, ¥17,014 million and ¥18,014 million, respectively, on Equity in earnings (losses) of equity method investees—net in the accompanying consolidated statements of income.
	Litigation
	The MUFG Group is subject to various litigation matters. Based upon the current knowledge and the results of consultation with counsel, liabilities for losses from litigation matters are recorded when they are determined to be both probable in their occurrences and can be reasonably estimated. Management believes that the eventual outcome of such litigation matters will not have a material adverse effect on the MUFG Group’s financial position, results of operations or cash flows.

Fees_And_Commissions_Income_Te

Fees And Commissions Income [Text Block]	12 Months Ended
	Mar. 31, 2014
Fees And Commissions Income [Text Block]	'
	27	FEES AND COMMISSIONS INCOME
	Details of fees and commissions income for the fiscal years ended March 31, 2012, 2013 and 2014 were as follows:
		2012		2013		2014
		(in millions)
	Trust fees	¥	95,037	¥	92,525	¥	105,721
	Fees on funds transfer and service charges for collections		139,840		137,338		139,974
	Fees and commissions on international business		57,688		58,905		68,273
	Fees and commissions on credit card business		149,946		149,671		157,227
	Service charges on deposits		18,216		16,727		20,451
	Fees and commissions on securities business		128,436		155,983		221,791
	Fees on real estate business		23,610		28,041		34,715
	Insurance commissions		33,686		33,472		39,669
	Fees and commissions on stock transfer agency services		49,283		49,137		49,394
	Guarantee fees		58,393		55,427		52,634
	Fees on investment funds business		126,601		130,006		155,572
	Other fees and commissions		219,227		253,642		248,695
	Total	¥	1,099,963	¥	1,160,874	¥	1,294,116
	Trust fees consist primarily of fees earned by fiduciary asset management and administration services for corporate pension plans, investment funds, etc. Fees on funds transfer and service charges for collection are earned by providing settlement services such as domestic fund remittances and domestic collection services. Fees and commissions on international business primarily consist of fees from international fund transfer and collection services, and trade-related financing services. Fees and commissions on credit card business are composed of interchange income, annual fees, royalty and other service charges from franchisees. Service charges on deposits are fees charged for deposits such as checking account deposits. Fees and commissions on securities business include underwriting, brokerage and advisory services and arrangement fees on securitizations. Fees on real estate business primarily consist of fees from real estate agent services. Insurance commissions are earned by acting as agent for insurance companies to sell insurance products. Fees and commissions on stock transfer agency services consist of fees earned primarily by stock title transfers and agency services for the calculation and payment of dividends. Guarantee fees are earned by providing guarantees on residential mortgage loans. Fees on investment funds business primarily consist of management fees for investment funds. Other fees and commissions include various arrangement fees and agent fees excluding the fees mentioned above.

Trading_Account_Profits_And_Lo

Trading Account Profits And Losses [Text Block]	12 Months Ended
	Mar. 31, 2014
Trading Account Profits And Losses [Text Block]	'
	28	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, 2012, 2013 and 2014 were comprised of the following:
		2012			2013			2014
		(in millions)
	Interest rate and other derivative contracts	¥	77,698		¥	(82,684	)	¥	(84,408	)
	Trading account securities, excluding derivatives		589,587			652,960			50,522
	Trading account profits (losses)—net		667,285			570,276			(33,886	)
	Foreign exchange derivative contracts(1)		(94,853	)		(94,223	)		(52,737	)
	Net trading gains (losses)	¥	572,432		¥	476,053		¥	(86,623	)
	Note:
	-1	Gains (losses) on foreign exchange derivative contracts are included in Foreign exchange gains (losses)—net in the accompanying consolidated statements of income. Foreign exchange gains (losses)—net in the accompanying consolidated statements of income are also comprised of foreign exchange gains (losses) other than derivative contracts and foreign exchange gains (losses) related to the fair value option.
	For further information on the methodologies and assumptions used to estimate fair value, see Note 31, which also shows fair values of trading account securities by major category. Note 23 discloses further information regarding the derivative-related impact on Trading account profits (losses)—net by major category.

Business_Segments_Text_Block

Business Segments [Text Block]	12 Months Ended
	Mar. 31, 2014
Business Segments [Text Block]	'
	29	BUSINESS SEGMENTS
	The business segment information, set forth below, 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 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 is 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.
	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 following is a brief explanation of the MUFG Group’s business segments:
	Integrated Retail Banking Business Group—Covers all domestic retail businesses, including commercial banking, trust banking and securities businesses. This business group integrates the retail business of BTMU, MUTB, MUMSS, Mitsubishi UFJ NICOS and other subsidiaries as well as retail product development, promotion and marketing in a single management structure. At the same time, the business group has developed and implemented MUFG Plaza, a one-stop, comprehensive financial services concept that provides integrated banking, trust and securities services.
	Integrated Corporate Banking Business Group—Covers all domestic corporate businesses, including commercial banking, investment banking, trust banking and securities business. Through the integration of these business lines, diverse financial products and services are provided to the MUFG Group’s corporate clients. The business group has clarified strategic domains, sales channels and methods to match the different growth stages and financial needs of the MUFG Group’s corporate clients.
	Integrated Trust Assets Business Group—Covers asset management and administration services for products such as pension trusts and security trusts by integrating the trust banking expertise of MUTB and the global network of BTMU. The business group provides a full range of services to corporate and other pension funds, including stable and secure pension fund management and administration, advice on pension schemes, and payment of benefits to scheme members.
	Integrated Global Business Group—Covers businesses outside Japan, including commercial banking such as loans, deposits and cash management services, investment banking, retail banking, trust banking and securities businesses (with the retail banking and trust assets businesses being conducted through MUB), through a global network of more than 500 offices outside Japan to provide customers with financial products and services that meet their increasingly diverse and sophisticated financing needs. MUB is one of the largest commercial banks in California by both total assets and total deposits. MUB provides a wide range of financial services to consumers, small businesses, middle market companies and major corporations, primarily in California, Oregon and Washington but also nationally and internationally. MUB’s parent company is MUAH, which is a bank holding company in the United States.
	Global Markets—Covers asset and liability management and strategic investment of BTMU and MUTB, and sales and trading of financial products of BTMU, MUTB and MUSHD.
	Other—Consists mainly of the corporate centers of MUFG, BTMU, MUTB and MUMSS. The elimination of duplicated amounts of net revenue among business segments is also reflected in Other.
	Management does not use information on segments’ total assets to allocate resources and assess performance. Accordingly, business segment information on total assets is not presented.
	Effective April 1, 2013 and October 1, 2013, in order to further streamline and integrate managerial accounting methodologies on a group-wide basis, the MUFG Group made modifications to such methodologies, which mainly affected the Integrated Retail Banking Business Group and the Corporate Banking Business Group. These modifications had no impact on total operating profit for the fiscal years ended March 31, 2012 and 2013, but affected net revenue and operating expenses allocations among segments.
	The table set forth below has been reclassified to enable comparisons between the relevant amounts for the fiscal years ended March 31, 2012, 2013 and 2014, respectively:
		Integrated			Integrated			Integrated			Integrated Global Business						Global			Other			Total
		Retail			Corporate			Trust			Group						Markets
		Banking			Banking			Assets
		Business			Business			Business
		Group			Group			Group			Other		MUAH		Total
											than
											MUAH
		(in billions)
	Fiscal year ended March 31, 2012:
	Net revenue:	¥	1,227.10		¥	870.7		¥	140.1		¥	364.6	¥	252	¥	616.6	¥	727.9		¥	(1.3	)	¥	3,581.10
	BTMU and MUTB:		583			778.2			55.7			286.1		—		286.1		645.8			0.6			2,349.40
	Net interest income		467.7			402.8			—			128.2		—		128.2		309			39.6			1,347.30
	Net fees		105.6			303.1			55.7			122.6		—		122.6		(16.4	)		(27.3	)		543.3
	Other		9.7			72.3			—			35.3		—		35.3		353.2			(11.7	)		458.8
	Other than BTMU and		644.1			92.5			84.4			78.5		252		330.5		82.1			(1.9	)		1,231.70
	MUTB(1)
	Operating expenses		915.8			440.5			87.3			196.5		173		369.5		128.1			161.4			2,102.60
	Operating profit (loss)	¥	311.3		¥	430.2		¥	52.8		¥	168.1	¥	79	¥	247.1	¥	599.8		¥	(162.7	)	¥	1,478.50
	Fiscal year ended March 31, 2013:
	Net revenue:	¥	1,207.80		¥	864		¥	138.8		¥	465.4	¥	288.5	¥	753.9	¥	763		¥	(10.8	)	¥	3,716.70
	BTMU and MUTB:		561.5			767.9			55.4			358.4		—		358.4		655.7			(8.6	)		2,390.30
	Net interest income		428.1			382.2			—			181.5		—		181.5		262.1			64.1			1,318.00
	Net fees		124.8			312.6			55.4			141.6		—		141.6		(19.2	)		(32.8	)		582.4
	Other		8.6			73.1			—			35.3		—		35.3		412.8			(39.9	)		489.9
	Other than BTMU and		646.3			96.1			83.4			107		288.5		395.5		107.3			(2.2	)		1,326.40
	MUTB(1)
	Operating expenses		917.3			434.4			88.3			246.8		205.4		452.2		142.5			174.4			2,209.10
	Operating profit (loss)	¥	290.5		¥	429.6		¥	50.5		¥	218.6	¥	83.1	¥	301.7	¥	620.5		¥	(185.2	)	¥	1,507.60
	Fiscal year ended March 31, 2014:
	Net revenue:	¥	1,290.60		¥	924.5		¥	159.2		¥	567.9	¥	375.9	¥	943.8	¥	568.6		¥	(13.6	)	¥	3,873.10
	BTMU and MUTB:		569.9			801			65.5			443.1		—		443.1		411.6			(4.4	)		2,286.70
	Net interest income		398.1			374.8			—			235.8		—		235.8		219.5			79.6			1,307.80
	Net fees		163.5			337.5			65.5			164.7		—		164.7		(23.1	)		(62.0	)		646.1
	Other		8.3			88.7			—			42.6		—		42.6		215.2			(22.0	)		332.8
	Other than BTMU and		720.7			123.5			93.7			124.8		375.9		500.7		157			(9.2	)		1,586.40
	MUTB(1)
	Operating expenses		961.9			438.4			94.4			299.5		266.9		566.4		176.5			172.4			2,410.00
	Operating profit (loss)	¥	328.7		¥	486.1		¥	64.8		¥	268.4	¥	109	¥	377.4	¥	392.1		¥	(186.0	)	¥	1,463.10
	Note:
	-1	Includes MUFG and its subsidiaries other than BTMU and MUTB.
	Reconciliation
	As set forth above, the measurement bases and the income and expense items of the internal management reporting system are different from the accompanying consolidated statements of income. 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 income.
	A reconciliation of operating profit under the internal management reporting system for the fiscal years ended March 31, 2012, 2013 and 2014 above to income before income tax expense shown on the accompanying consolidated statements of income is as follows:
		2012			2013			2014
		(in billions)
	Operating profit:	¥	1,479		¥	1,508		¥	1,463
	Credit (provision) for credit losses		(224	)		(145	)		106
	Trading account profits (losses)—net		372			285			(394	)
	Equity investment securities gains (losses)—net		(95	)		(22	)		170
	Debt investment securities losses—net		(153	)		(153	)		(6	)
Foreign exchange gains (losses)—net		21			(53	)		(48	)
Equity in earnings (losses) of equity method investees—net		(499	)		60			111
Impairment of goodwill		—			—			(8	)
Impairment of intangible assets		(31	)		(3	)		—
Other—net		(20	)		(61	)		26
Income before income tax expense	¥	850		¥	1,416		¥	1,420

Foreign_Activities_Text_Block

Foreign Activities [Text Block]	12 Months Ended
	Mar. 31, 2014
Foreign Activities [Text Block]	'
	30	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 BTMU’s and MUTB’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, 2012, 2013 and 2014, 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			Europe		Asia/Oceania		Other
				States of					excluding		areas(1)
				America					Japan
		(in millions)
	Fiscal year ended March 31, 2012:
	Total revenue(2)(4)	¥	2,936,875	¥	192,775		¥	290,482	¥	450,651	¥	165,749	¥	4,036,532
	Total expense(3)		2,438,729		284,557			151,077		223,253		88,974		3,186,590
	Income (loss) before income tax expense (benefit)		498,146		(91,782	)		139,405		227,398		76,775		849,942
	Net income (loss) attributable to Mitsubishi UFJ Financial Group		163,334		(119,829	)		113,593		192,753		66,380		416,231
	Total assets at end of fiscal year		148,702,461		28,457,027			18,620,484		12,410,540		7,012,002		215,202,514
	Fiscal year ended March 31, 2013:
	Total revenue(2)	¥	3,016,008	¥	426,377		¥	256,495	¥	585,474	¥	211,076	¥	4,495,430
	Total expense(3)		2,248,856		327,565			160,061		268,349		74,728		3,079,559
	Income before income tax expense		767,152		98,812			96,434		317,125		136,348		1,415,871
	Net income attributable to Mitsubishi UFJ Financial Group		499,125		95,565			78,442		274,951		121,041		1,069,124
	Total assets at end of fiscal year		151,999,696		30,730,705			23,224,502		15,938,673		8,665,700		230,559,276
	Fiscal year ended March 31, 2014:
	Total revenue(2)	¥	3,110,050	¥	218,953		¥	155,022	¥	569,018	¥	290,321	¥	4,343,364
	Total expense(3)		1,952,250		426,084			143,417		315,203		85,967		2,922,921
	Income (loss) before income tax expense (benefit)		1,157,800		(207,131	)		11,605		253,815		204,354		1,420,443
	Net income (loss) attributable to Mitsubishi UFJ Financial Group		859,846		(131,566	)		6,484		149,417		131,212		1,015,393
	Total assets at end of fiscal year		158,809,701		40,625,000			22,352,446		22,312,805		9,561,125		253,661,077
	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	For the fiscal year ended March 31, 2012, Total revenue of United States of America includes an other-than-temporary impairment loss of Morgan Stanley’s common stock. See Note 2 for further details of an other-than-temporary impairment loss of Morgan Stanley’s common stock.
	The following is an analysis of certain asset and liability accounts related to foreign activities at March 31, 2013 and 2014:
		2013		2014
		(in millions)
	Cash and due from banks	¥	676,833	¥	804,617
	Interest-earning deposits in other banks		3,830,923		9,020,949
	Total	¥	4,507,756	¥	9,825,566
	Trading account assets	¥	28,450,804	¥	28,319,251
	Investment securities	¥	6,960,616	¥	4,749,265
	Loans—net of unearned income, unamortized premiums and deferred loan fees	¥	29,174,592	¥	39,763,643
	Deposits	¥	29,317,297	¥	40,648,813
	Funds borrowed:
	Call money, funds purchased	¥	254,796	¥	201,606
	Payables under repurchase agreements		6,857,970		8,995,939
	Payables under securities lending transactions		77,428		96,202
	Other short-term borrowings		2,531,308		3,698,004
	Long-term debt		2,847,585		3,376,761
	Total	¥	12,569,087	¥	16,368,512
	Trading account liabilities	¥	7,012,658	¥	5,876,702

Fair_Value_Text_Block

Fair Value [Text Block]	12 Months Ended
	Mar. 31, 2014
Fair Value [Text Block]	'
	31		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:
		Ÿ		Level 1—Unadjusted quoted prices for identical instruments in active markets.
		Ÿ		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.
		Ÿ		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 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, 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.
	Interest-earning Deposits in Other Banks
	Cash flows are estimated based on the terms of the contracts and discounted using the market interest rates applicable to the maturity of the contracts, which are adjusted to reflect credit risks on counterparties. As the inputs into the valuation techniques are readily observable, these deposits are classified in Level 2 of the fair value hierarchy.
	Receivables Under Resale Agreements
	Certain receivables under resale agreements are measured at fair value upon election of the fair value option and fair value is measured using discounted cash flows. Cash flows are estimated based on the terms of the contracts and discounted using the market interest rates applicable to the maturity of the contracts, which are adjusted to reflect credit risks on counterparties. These receivables are classified in Level 2 of the fair value hierarchy.
	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 governments and official institutions bonds, corporate bonds, residential mortgage-backed securities and equity securities.
	When quoted prices are not available, the MUFG Group estimates fair values by using internal valuation techniques, quoted prices of securities with similar characteristics or non-binding prices obtained from independent pricing vendors. 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 by using internal valuation techniques. Key inputs to the internal valuation techniques include estimated cash flows based on the terms of the contracts, yield curves based on market interest rates and volatilities. Corporate bonds which are valued using internal valuation techniques are generally classified in Level 2 of the fair value hierarchy. If any such key inputs are unobservable, they are classified in Level 3 of the fair value hierarchy. Certain investments in funds valued at net assets value are classified in Level 2 if they can be redeemed at their net asset value at the measurement date.
	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 weighting the estimated fair value amounts from internal valuation techniques and the non-binding quotes from the independent broker-dealers. The weight of the quotes from independent broker-dealer 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 valuation techniques 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), repayment 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, credit curves 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 except for certain private placement bonds issued by Japanese non-public companies. Fair values of private placement bonds issued by Japanese non-public companies are measured based on discounted cash flow method 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 rates applicable to the maturity of the bonds. The private placement bonds are generally utilized to finance medium or small size non-public companies. These bonds are classified in either Level 2 or Level 3 of the fair value hierarchy, depending on the significance of the adjustments for unobservable input of credit worthiness. 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, money in trust for segregating cash deposited by customers on security transactions and derivatives designated as hedging instruments. 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.
	Money in trust for segregating cash deposited by customers on security transactions mainly consists of certain Japanese government bonds which are valued using the valuation techniques described in the “Trading Account Assets and Liabilities—Trading Account Securities” above and is included in Level 1 or Level 2 of the fair value hierarchy depending on the component assets.
	The fair values of derivatives designated as hedging instruments are measured using the valuation techniques described in the “Trading Account Assets and Liabilities—Derivatives” above.
	Obligations to Return Securities Received as Collateral
	Obligations to return securities received as collateral under securities lending transactions 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. As not all counterparties have the same credit rating, it is necessary to take into account the actual credit rating of a counterparty to arrive at the fair value. In addition, the counterparty credit risk adjustment takes into account the effect of credit risk mitigation such as pledged collateral and legal right of offsets with the counterparty.
	For own credit risk adjustments, the MUFG Group takes into consideration all the facts and circumstances, including its own credit rating, the difference between its funding rate and market interest rate, and the existence of collateralization or netting agreements. As a result of these analyses, the MUFG Group considered that own credit risk adjustments for financial liabilities were not material.
	Liquidity adjustments are applied mainly to the instruments classified in Level 3 of the fair value hierarchy when recent prices of such instruments are unobservable or 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 possibility of error in the model-based estimated value.
	Investments in Certain Entities That Calculate Net Asset Value per Share
	The MUFG Group has interests in investment funds mainly hedge funds, private equity funds, and real estate funds that are measured at fair value on a recurring or nonrecurring basis.
	Hedge funds are primarily multi-disciplinary hedge funds that employ a fundamental bottom-up investment approach across various asset classes and strategies. The MUFG Group’s investments in hedge funds are generally redeemable on a monthly-quarterly basis with 30-90 days advance notice.
	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. It is estimated that the underlying assets of the fund would be liquidated within a ten-year period.
	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. It is estimated that the underlying assets of the funds would be liquidated within a four-year period.
	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, 2013 and 2014:
			March 31, 2013
			Level 1			Level 2			Level 3				Fair Value
			(in millions)
	Assets
	Trading account assets:
	Trading securities(1)		¥	15,613,802		¥	9,935,591		¥	631,113			¥	26,180,506
	Debt securities
	Japanese national government and Japanese government agency bonds			4,420,457			182,098			—				4,602,555
	Japanese prefectural and municipal bonds			—			129,974			—				129,974
	Foreign governments and official institutions bonds			9,983,023			2,144,396			96,255				12,223,674
	Corporate bonds			—			2,729,892			77,089				2,806,981
	Residential mortgage-backed securities			—			3,220,036			9,881				3,229,917
	Asset-backed securities			—			80,447			396,071				476,518
	Other debt securities			—			11,597			29,526				41,123
	Commercial paper			—			1,129,508			—				1,129,508
	Equity securities(2)			1,210,322			307,643			22,291				1,540,256
	Trading derivative assets			52,242			14,520,461			73,175				14,645,878
	Interest rate contracts			6,770			11,175,763			31,794				11,214,327
	Foreign exchange contracts			511			3,171,002			21,131				3,192,644
	Equity contracts			34,062			53,874			15,735				103,671
	Commodity contracts			10,899			59,075			3,628				73,602
Credit derivatives			—			60,747			887				61,634
Investment securities:
Securities available-for-sale			52,347,228			6,024,714			472,127				58,844,069
Debt securities
Japanese national government and Japanese government agency bonds			48,069,738			1,410,216			—				49,479,954
Japanese prefectural and municipal bonds			—			217,075			—				217,075
Foreign governments and official institutions bonds			319,176			248,398			148,722				716,296
Corporate bonds			—			1,830,100			92,846				1,922,946
Residential mortgage-backed securities			—			1,202,128			21,492				1,223,620
Commercial mortgage-backed securities			—			269,343			39				269,382
Asset-backed securities			—			708,428			102,250				810,678
Other debt securities			—			—			106,714				106,714
Marketable equity securities			3,958,314			139,026			64				4,097,404
Other investment securities			—			1,105			24,795				25,900
Others(3)(4)			455,012			134,569			8,418				597,999
Total		¥	68,468,284		¥	30,616,440		¥	1,209,628			¥	100,294,352
Liabilities
Trading account liabilities:
Trading securities sold, not yet purchased		¥	72,756		¥	6,057		¥	—			¥	78,813
Trading derivative liabilities			124,431			14,672,597			93,641				14,890,669
Interest rate contracts			43,946			11,126,837			34,044				11,204,827
Foreign exchange contracts			274			3,390,222			37,937				3,428,433
Equity contracts			67,551			49,312			14,354				131,217
Commodity contracts			12,660			46,753			4,432				63,845
Credit derivatives			—			59,473			2,874				62,347
Obligation to return securities received as collateral			2,887,425			147,122			—				3,034,547
Others(5)			—			431,773			121,932				553,705
Total		¥	3,084,612		¥	15,257,549		¥	215,573			¥	18,557,734
		March 31, 2014
		Level 1			Level 2			Level 3				Fair Value
		(in millions)
Assets
Trading account assets:
Trading securities(1)		¥	20,102,994		¥	8,075,408		¥	658,917			¥	28,837,319
Debt securities
Japanese national government and Japanese government agency bonds			5,688,374			235,944			—				5,924,318
Japanese prefectural and municipal bonds			—			89,017			—				89,017
Foreign governments and official institutions bonds			13,133,023			1,784,478			15,450				14,932,951
Corporate bonds			—			3,160,057			132,518				3,292,575
Residential mortgage-backed securities			—			1,483,547			11,601				1,495,148
Asset-backed securities			—			215,686			439,664				655,350
Other debt securities			—			20,285			32,565				52,850
Commercial paper			—			794,868			—				794,868
Equity securities(2)			1,281,597			291,526			27,119				1,600,242
Trading derivative assets			90,740			11,640,992			77,224				11,808,956
Interest rate contracts			22,677			8,565,213			28,202				8,616,092
Foreign exchange contracts			507			2,909,201			6,471				2,916,179
Equity contracts			50,425			65,827			32,434				148,686
Commodity contracts			17,131			43,826			10,102				71,059
Credit derivatives			—			56,925			15				56,940
Investment securities:
Securities available for sale			45,302,514			6,038,450			544,688				51,885,652
Debt securities
Japanese national government and Japanese government agency bonds			39,852,612			1,736,397			—				41,589,009
Japanese prefectural and municipal bonds			—			203,131			—				203,131
Foreign governments and official institutions bonds			794,822			324,952			151,647				1,271,421
Corporate bonds			—			1,485,280			75,849				1,561,129
Residential mortgage-backed securities			—			961,337			19,258				980,595
Commercial mortgage-backed securities			—			197,034			3,112				200,146
Asset-backed securities			—			948,168			109,876				1,058,044
Other debt securities			—			—			184,946				184,946
Marketable equity securities			4,655,080			182,151			—				4,837,231
Other investment securities			—			—			26,201				26,201
Others(3)(4)			489,356			28,169			5,598				523,123
Total		¥	65,985,604		¥	25,783,019		¥	1,312,628			¥	93,081,251
Liabilities
Trading account liabilities:
Trading securities sold, not yet purchased		¥	189,524		¥	4,719		¥	—			¥	194,243
Trading derivative liabilities			108,059			11,611,316			68,360				11,787,735
Interest rate contracts			25,293			8,481,947			14,526				8,521,766
Foreign exchange contracts			3,997			2,981,272			13,509				2,998,778
Equity contracts			57,464			57,892			28,239				143,595
Commodity contracts			21,305			30,029			10,724				62,058
Credit derivatives			—			60,176			1,362				61,538
Obligation to return securities received as collateral			3,914,441			57,013			—				3,971,454
Others(5)			—			612,124			92,867				704,991
Total		¥	4,212,024		¥	12,285,172		¥	161,227			¥	16,658,423
Notes:
-1		Includes securities measured under the fair value option.
-2		Includes investments valued at net asset value of ¥38,959 million and ¥28,922 million at March 31, 2013 and 2014, respectively. The unfunded commitments related to these investments at March 31, 2013 and 2014 were ¥8,644 million and ¥11,373 million, respectively. These investments were mainly hedge funds.
-3		Mainly comprised of securities received as collateral that may be sold or repledged under securities lending transactions, money in trust for segregating cash deposited by customers on security transactions and derivatives designated as hedging instruments.
-4		Includes investments valued at net asset value of real estate funds, hedge funds and private equity funds, whose fair values at March 31, 2013 were ¥4,276 million, ¥3,189 million and ¥2,943 million, respectively, and those at March 31, 2014 were ¥1,669 million, ¥1,232 million and ¥2,441 million, respectively. The amounts of unfunded commitments related to these real estate funds, hedge funds and private equity funds at March 31, 2013 were nil, ¥1,221 million and ¥2,028 million, respectively, and those at March 31, 2014 were nil, ¥104 million and ¥1,871 million, respectively.
-5		Includes other short-term borrowings, long-term debt, bifurcated embedded derivatives carried at fair value and derivative liabilities designated as hedging instruments.
Transfers Between Level 1 and Level 2
During the fiscal years ended March 31, 2013 and 2014, the transfers between Level 1 and Level 2 were as follows:
		Fiscal years ended March 31,
		2013						2014
		Transfers out of			Transfers out of			Transfers out of				Transfers out of
		Level 1			Level 2			Level 1				Level 2
		into Level 2(1)			into Level 1(1)			into Level 2(1)				into Level 1(1)
		(in millions)
Assets
Trading account assets:
Trading securities
Debt securities
Japanese national government and Japanese government agency bonds		¥	—		¥	10,717		¥	7,420			¥	—
Foreign governments and official institutions bonds			—			1,289			—				—
Residential mortgage-backed securities			3,247,522			—			—				—
Equity securities			5,308			—			13,762				—
Investment securities:
Securities available-for-sale
Debt securities
Foreign governments and official institutions bonds			413,515			—			—				—
Marketable equity securities			19,026			13,737			19,011				13,252
Note:
-1		All transfers between Level 1 and Level 2 were assumed to have occurred at the beginning of the first-half or the second-half of the fiscal year.
In general, the transfers from Level 1 into Level 2 represented securities whose fair values were measured at quoted prices in active markets at the beginning of the period but such quoted prices were not available at the end of the period. The transfers from Level 2 into Level 1 represented securities for which quoted prices in active markets became available at the end of the period even though such quoted prices were not available at the beginning of the period. For the first-half of the fiscal year ended March 31, 2013, certain residential mortgage-backed securities which are accounted for as trading securities were transferred from Level 1 to Level 2 based on an analysis of the then-current market activity. In addition, a certain subsidiary, based on its analysis, transferred its U.S. government sponsored agency securities, which are accounted for as Securities available-for-sale, from Level 1 to Level 2.
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, 2013 and 2014. 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 (that is, 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,			Total gains (losses)							Purchases			Issues			Sales			Settlements			Transfers			Transfers			March 31,			Change in
		2012			for the period																			into			out of			2013			unrealized
																								Level 3(5)			Level 3(5)						gains (losses)
																																	included in
																																	earnings for
																																	assets and
																																	liabilities
																																	still held at
																																	March 31,
					Included			Included																									2013
					in			in other
					earnings			comprehensive
								income
		(in millions)
Assets
Trading account assets:
Trading securities(1)		¥	1,076,657		¥	77,239	(2)	¥	—			¥	518,698		¥	—		¥	(360,580	)	¥	(378,767	)	¥	49,521		¥	(351,655	)	¥	631,113		¥	64,764	(2)
Debt securities
Foreign governments and official institutions bonds			149,731			19,142			—				179,907			—			(205,581	)		(24,043	)		23,202			(46,103	)		96,255			11,831
Corporate bonds			501,895			3,354			—				55,147			—			(2,089	)		(223,088	)		26,315	(6)		(284,445	)(6)(7)		77,089			5,206
Residential mortgage-backed securities			10,124			1,677			—				12,050			—			(12,042	)		(1,928	)		—			—			9,881			1,599
Asset-backed securities			395,198			44,365			—				239,598			—			(132,275	)		(129,708	)		—			(21,107	)		396,071			41,748
Other debt securities			—			4,358			—				25,168			—			—			—			—			—			29,526			4,358
Equity securities			19,709			4,343			—				6,828			—			(8,593	)		—			4			—			22,291			22
Trading derivatives—net			(27,458	)		20,344	(2)		(5,408	)			1,379			(2,775	)		—			(24,964	)		29,392			(10,976	)		(20,466	)		17,466	(2)
Interest rate contracts—net			(44,904	)		42,457			233				2			(4	)		—			(8,468	)		8,431			3			(2,250	)		38,552
Foreign exchange contracts—net			23,907			(28,164	)		(5,517	)			448			(1,852	)		—			(16,150	)		21,644			(11,122	)		(16,806	)		(27,532	)
Equity contracts—net			(7,019	)		9,275			10				444			(434	)		—			(833	)		(62	)		—			1,381			9,449
Commodity contracts—net			162			(438	)		(19	)			485			(485	)		—			(52	)		(600	)		143			(804	)		(140	)
Credit derivatives—net			396			(2,786	)		(115	)			—			—			—			539			(21	)		—			(1,987	)		(2,863	)
Investment securities:
Securities available-for-sale			1,673,387			3,218	(3)		16,083				230,505			—			(14,809	)		(211,058	)		113,491			(1,338,690	)		472,127			(4,380	)(3)
Debt securities
Foreign governments and official institutions bonds			130,720			—			2,582				23,158			—			(31	)		(7,707	)		—			—			148,722			—
Corporate bonds			1,460,489			1,629			(1,855	)			11,465			—			(12,843	)		(140,840	)		113,491	(6)		(1,338,690	)(6)(7)		92,846			(4,370	)
Residential mortgage-backed securities			22,351			(27	)		100				4,500			—			—			(5,432	)		—			—			21,492			(1	)
Commercial mortgage-backed securities			3,802			1,090			(126	)			—			—			(1,855	)		(2,872	)		—			—			39			—
Asset-backed securities			54,947			606			8,400				85,469			—			—			(47,172	)		—			—			102,250			30
Other debt securities			964			(84	)		6,980				105,889			—			—			(7,035	)		—			—			106,714			(43	)
Marketable equity securities			114			4			2				24			—			(80	)		—			—			—			64			4
Other investment securities			32,321			(505	)(4)		—				875			—			(3,092	)		(16	)		—			(4,788	)		24,795			(618	)(4)
Others			10,368			(597	)(4)		—				637			—			(1,990	)		—			—			—			8,418			129	(4)
Total		¥	2,765,275		¥	99,699		¥	10,675			¥	752,094		¥	(2,775	)	¥	(380,471	)	¥	(614,805	)	¥	192,404		¥	(1,706,109	)	¥	1,115,987		¥	77,361
Liabilities
Others			43,536			(74,957	)(4)		(20,590	)			239			2,432			—			(20,907	)		1,181			(96	)		121,932			(61,188	)(4)
Total		¥	43,536		¥	(74,957	)	¥	(20,590	)		¥	239		¥	2,432		¥	—		¥	(20,907	)	¥	1,181		¥	(96	)	¥	121,932		¥	(61,188	)
		March 31,			Total gains (losses)										Issues			Sales			Settlements			Transfers			Transfers			March 31,			Change in
		2013			for the period																			into			out of			2014			unrealized
																								Level 3(5)			Level 3(5)						gains (losses)
																																	included in
																																	earnings for
																																	assets and
																																	liabilities
																																	still held at
																																	March 31,
					Included			Included				Purchases																					2014
					in			in other
					earnings			comprehensive
								income
		(in millions)
Assets
Trading account assets:
Trading securities(1)		¥	631,113		¥	50,809	(2)	¥	—			¥	499,143		¥	—		¥	(302,363	)	¥	(173,816	)	¥	12,574		¥	(58,543	)	¥	658,917		¥	36,144	(2)
Debt securities
Foreign governments and official institutions bonds			96,255			4,905			—				65,828			—			(72,059	)		(32,354	)		2,414			(49,539	)		15,450			232
Corporate bonds			77,089			4,916			—				100,011			—			(43,326	)		(7,242	)		10,074	(6)		(9,004	)(6)		132,518			4,922
Residential mortgage-backed securities			9,881			1,187			—				83,179			—			(81,698	)		(948	)		—			—			11,601			702
Asset-backed securities			396,071			32,794			—				245,342			—			(101,271	)		(133,272	)		—			—			439,664			27,252
Other debt securities			29,526			3,039			—				—			—			—			—			—			—			32,565			3,039
Equity securities			22,291			3,968			—				4,783			—			(4,009	)		—			86			—			27,119			(3	)
Trading derivatives—net			(20,466	)		30,791	(2)		(3,463	)			4,732			(4,889	)		—			(2,252	)		15,116			(10,705	)		8,864			15,146	(2)
Interest rate contracts—net			(2,250	)		19,554			714				878			—			—			(4,762	)		6,712			(7,170	)		13,676			14,695
Foreign exchange contracts—net			(16,806	)		9,615			(3,835	)			770			(1,215	)		—			(431	)		8,432			(3,568	)		(7,038	)		460
Equity contracts—net			1,381			4,125			34				1,323			(1,323	)		—			(1,345	)		—			—			4,195			202
Commodity contracts—net			(804	)		109			(10	)			1,761			(2,351	)		—			668			(28	)		33			(622	)		809
Credit derivatives —net			(1,987	)		(2,612	)		(366	)			—			—			—			3,618			—			—			(1,347	)		(1,020	)
Investment securities:
Securities available-for -sale			472,127			3,950	(3)		51,538				256,776			—			(10,961	)		(218,806	)		4,744			(14,680	)		544,688			(869	)(3)
Debt securities
Foreign governments and official institutions bonds			148,722			—			3,393				5,574			—			—			(6,042	)		—			—			151,647			—
Corporate bonds			92,846			4,059			(51	)			5,046			—			(1,367	)		(14,772	)		4,744	(6)		(14,656	)(6)		75,849			(873	)
Residential mortgage-backed securities			21,492			3			83				3,015			—			(609	)		(4,726	)		—			—			19,258			—
Commercial mortgage-backed securities			39			—			(153	)			3,265			—			(39	)		—			—			—			3,112			—
Asset-backed securities			102,250			(120	)		17,636				178,735			—			(8,751	)		(179,874	)		—			—			109,876			4
Other debt securities			106,714			—			30,630				61,118			—			(195	)		(13,321	)		—			—			184,946			—
Marketable equity securities			64			8			—				23			—			—			(71	)		—			(24	)		—			—
Other investment securities			24,795			1,751	(4)		14				2,879			—			(2,126	)		(2	)		—			(1,110	)		26,201			1,258	(4)
Others			8,418			432	(4)		—				336			—			(3,588	)		—			—			—			5,598			163	(4)
Total		¥	1,115,987		¥	87,733		¥	48,089			¥	763,866		¥	(4,889	)	¥	(319,038	)	¥	(394,876	)	¥	32,434		¥	(85,038	)	¥	1,244,268		¥	51,842
Liabilities
Others			121,932			(19,097	)(4)		(24,145	)			—			302			—			(28,498	)		(10	)		(44,101	)		92,867			(10,707	)(4)
Total		¥	121,932		¥	(19,097	)	¥	(24,145	)		¥	—		¥	302		¥	—		¥	(28,498	)	¥	(10	)	¥	(44,101	)	¥	92,867		¥	(10,707	)
Notes:
-1		Includes Trading securities under fair value option.
-2		Included in Trading account profits (losses)—net and in Foreign exchange gains (losses)—net.
-3		Included in Investment securities gains—net.
-4		Included in Trading account profits (losses)—net.
-5		All transfers out of Level 3 or into Level 3 were assumed to have occurred at the beginning of the first-half or the second-half of the fiscal year.
-6		Transfers out of and transfers into Level 3 for corporate bonds were due principally to changes in the impact of unobservable credit worthiness inputs of the private placement bonds.
-7		Certain private placement bonds issued by non-public companies which are accounted for as trading account securities amounted to ¥223,938 million and securities available-for-sale amounted to ¥1,209,272 million were transferred from Level 3 to Level 2 during the fiscal year ended March 31, 2013. These transfers were due to change in the significance of the unobservable inputs used to measure fair value of the private placement bonds.
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:
March 31, 2013		Fair value(1)			Valuation technique		Significant unobservable inputs	Range		Weighted
										Average(2)
		(in millions)
Assets
Trading securities and Investment securities:
Foreign governments and official institutions bonds								32.5%~51.9%			36	%
		¥	33,649		Monte Carlo method		Correlation between interest rate and foreign exchange rate
							Correlation between interest rates	41.3%~63.3%			62.1	%
			19,699		Return on equity method		Probability of default	0.0%~8.0%			0.7	%
							Recovery rate	25.0%~90.0%			56.2	%
							Market-required return on capital	15.0%~17.0%			15.7	%
Corporate bonds			62,788		Discounted cash flow		Probability of default	0.1%~14.2%			4.2	%
							Recovery rate	15.0%~100.0%			44.9	%
			1,986		Monte Carlo method		Correlation between interest rate and foreign exchange rate	32.5%~37.9%			35.2	%
							Correlation between interest rates	63.30%			63.3	%
			9,059		Internal model		Liquidity premium	1.5%~2.5%			2.3	%
Residential mortgage-backed securities, Commercial mortgage-backed securities and Asset-backed securities			72,640		Discounted cash flow		Discount factor	1.0%~1.2%			1.1	%
							Prepayment rate	6.2%~14.8%			8.8	%
							Probability of default	0.0%~5.2%			4.9	%
							Recovery rate	0.0%~76.0%			65.4	%
			289,398		Internal model		Asset correlations	11.0%~14.0%			13.5	%
							Discount factor	1.0%~4.8%			1.5	%
							Prepayment rate	3.9%~38.3%			32.6	%
							Probability of default	0.0%~84.6%			—	(3)
							Recovery rate	53.6%~69.8%			67.5	%
Other debt securities			29,526		Discounted cash flow		Liquidity premium	0.5%~0.8%			0.8	%
			104,957		Return on equity method		Probability of default	0.0%~8.0%			0.6	%
							Recovery rate	25.0%~90.0%			64.8	%
							Market-required return on capital	15.0%~17.0%			16.5	%
March 31, 2013		Fair value(1)			Valuation technique			Significant unobservable inputs		Range
		(in millions)
Trading derivatives—net:
Interest rate contracts—net			-2,533			Option model		Probability of default			0.3	%~12.5%
								Correlation between interest rates			(0.1	)%~97.6%
								Correlation between interest rate and foreign exchange rate			32.5	%~60.2%
								Recovery rate			40	%~51.0%
								Volatility			29.1	%~58.3%
								Prepayment rate			0	%~2.3%
Foreign exchange contracts—net			(16,806	)		Option model		Probability of default			0.4	%~14.2%
								Correlation between interest rates			28.2	%~80.6%
								Correlation between interest rate and foreign exchange rate			22.2	%~66.3%
								Correlation between underlying assets			44.1	%~82.8%
								Recovery rate			40	%~51.0%
Equity contracts—net			1,381			Option model		Correlation between interest rate and equity			10.6	%~52.0%
Credit derivative contracts—net			(1,987	)		Option model		Recovery rate			20	%~36.8%
								Correlation between underlying assets			11.6	%~88.2%
March 31, 2014		Fair value(1)			Valuation technique		Significant unobservable inputs	Range		Weighted
										Average(2)
		(in millions)
Assets
Trading securities and Investment securities:
Foreign governments and official institutions bonds		¥	6,876		Monte Carlo method		Correlation between interest rate and foreign exchange rate	32.6%~48.3%			37.3	%
							Correlation between interest rates	42.1%~59.8%			58.1	%
			23,983		Return on equity method		Probability of default	0.3%~1.9%			0.9	%
							Recovery rate	60.0%~80.0%			73	%
							Market-required return on capital	8.0%~10.0%			9.4	%
Corporate bonds			126,101		Discounted cash flow		Probability of default	0.1%~14.0%			0.9	%
							Recovery rate	14.0%~68.4%			40.7	%
			269		Monte Carlo method		Correlation between interest rate and foreign exchange rate	32.6%~44.6%			36.9	%
							Correlation between interest rates	52.2%~59.8%			59.5	%
			9,064		Internal model		Liquidity premium	1.5%~2.5%			2.3	%
Residential mortgage-backed securities, Commercial mortgage-backed securities and Asset-backed securities			90,420		Discounted cash flow		Probability of default	4.6%~5.1%			5	%
							Recovery rate	65.0%~76.0%			68	%
			430,386		Internal model		Asset correlations	11.0%~14.0%			13.7	%
							Discount factor	1.5%~5.8%			1.9	%
							Prepayment rate	4.5%~44.8%			40.9	%
							Probability of default	0.0%~88.8%			—	(3)
							Recovery rate	54.5%~79.2%			77.7	%
Other debt securities			32,565		Discounted cash flow		Liquidity premium	0.6%~0.8%			0.8	%
			182,613		Return on equity method		Probability of default	0.0%~25.0%			0.7	%
							Recovery rate	25.0%~90.0%			66.9	%
							Market-required return on capital	8.0%~10.0%			9.7	%
March 31, 2014		Fair value(1)			Valuation technique			Significant unobservable inputs		Range
		(in millions)
Trading derivatives—net:
Interest rate contracts—net			12,366			Option model		Probability of default			0	%~14.0%
								Correlation between interest rates			22.8	%~99.4%
								Correlation between interest rate and foreign exchange rate			31.2	%~48.3%
								Recovery rate			40	%~47.0%
								Volatility			27.1	%~39.5%
Foreign exchange contracts—net			(7,038	)		Option model		Probability of default			0.1	%~14.0%
								Correlation between interest rates			38.8	%~78.7%
								Correlation between interest rate and foreign exchange rate			31.2	%~58.7%
								Correlation between underlying assets			49.9	%~85.0%
								Recovery rate			40	%~47.0%
Equity contracts—net			4,548			Option model		Correlation between interest rate and equity			24.9	%~49.0%
Credit derivative contracts—net			(1,347	)		Option model		Recovery rate			37	%~37.0%
								Correlation between underlying assets			11.4	%~87.3%
Notes:
-1		The fair value as of March 31, 2013 and 2014 excludes the fair value of investments valued using vendor prices.
-2		Weighted averages are calculated by weighting each input by the relative fair value of the respective financial instruments.
-3		See “Probability of default” in “Sensitivity to and range of unobservable inputs”.
Sensitivity to and range of unobservable inputs
Probability of default—Probability of default is an estimate of the likelihood that the default event will occur and the MUFG Group will be unable to collect the contractual amounts. A significant increase (decrease) in the default rate would result in a significant decrease (increase) in a fair value through a decrease (increase) in the estimated cash flows. Probability of default used in Internal model of Residential mortgage-backed securities, Commercial mortgage-backed securities and Asset-backed securities represents that of underlying assets, whereas probability of default used in other valuation techniques represents the counterparty default risks, determined through the MUFG Group’s credit rating system.
The wide range of probability of default used in Internal model of Residential mortgage-backed securities, Commercial mortgage-backed securities and Asset-backed securities is mainly caused by Asset-backed securities. Asset-backed securities have a large number of underlying loans, mainly corporate loans, in several industries. The MUFG Group primarily makes investments in the senior tranches of such securities, with no investments in the equity portion. Thus, the MUFG Group’s investments have higher priority of payments than mezzanine and equity and even if some of underlying loans become default status, the MUFG Group may still be able to receive the full contractual payments.
For derivative contracts, the MUFG Group holds positions with a large number of counterparties with various credit quality, which results in wider range of probability of default. However, the majority of counterparties have higher ratings, categorized as “Normal” in the internal credit rating system, the inputs used to estimate fair value of derivative contracts are concentrated in the lower end of the range.
Discount factor and Liquidity premium—Discount factor and liquidity premium are adjustments to discount rates to reflect uncertainty of cash flows and liquidity of the instruments. When recent prices of similar instruments are unobservable in inactive or less active markets, discount rates are adjusted based on facts and circumstances of the markets including the availability of quotes and the time since the latest available quotes. A significant increase (decrease) in discount rate would result in a significant decrease (increase) in a fair value.
Recovery rate and Prepayment rate—Recovery rate is the proportion of the total outstanding balance of a bond or loan that is expected to be collected in a liquidation scenario. For many credit securities (such as asset-backed securities), there is no directly observable market input for recovery, but indications of recovery levels are available from third-party pricing services. The assumed recovery of a security may differ from its actual recovery that will be observable in the future. Prepayment rate represents the proportion of principal that is expected to be paid prematurely in each period on a security or pool of securities. Prepayment rates change the future cash flows for the investor and thereby change the fair value of the security. Recovery rate and prepayment rate would affect estimation of future cash flows to a certain extent and changes in these inputs could result in a significant increase or decrease in fair value.
Volatility—Volatility is a measure of the speed and severity of market price changes and is a key factor in pricing. Typically, instruments can become more expensive if volatility increases. A significant increase (decrease) in volatility would result in a significant increase (decrease) in fair value through a significant increase (decrease) in the value of an option.
The level of volatility generally depends on the tenor of the underlying instrument and the strike price or level defined in the contract. Volatilities for certain combinations of tenor and strike are not observable. The volatility inputs used to estimate fair value of interest rate contracts are distributed throughout the range.
Correlation—Correlation is a measure of the co-movement between two variables. A variety of correlation-related assumptions are required for a wide range of instruments including foreign governments and official institutions bonds, asset-backed securities, corporate bonds, derivatives and certain other instruments. In most cases, correlations used are not observable in the market and must be estimated using historical information. Changes in correlation inputs can have a major impact, favorable or unfavorable, on the value of an instrument, depending on its nature. In addition, the wide range of correlation inputs are primarily due to the complex and unique nature of these instruments. There are many different types of correlation inputs, including cross-asset correlation (such as correlation between interest rate and equity), and same-asset correlation (such as correlation between interest rates). Correlation levels are highly dependent on market conditions and could have a relatively wide range of levels within or across asset classes.
For interest rate contracts and foreign exchange contracts, the diversity in the portfolio held by the MUFG Group is reflected in wide ranges of correlation, as the fair values of transactions with a variety of currencies and tenors are determined using several foreign exchange and interest rate curves. For equity derivative contracts, the wide range of correlation between interest rate and equity is primarily due to the large number of correlation pairs with different maturities of contracts. For credit derivative contracts, the wide range of correlation between underlying assets is primarily due to factors such as reference assets with different maturities, capital structure subordinations, and credit quality.
Valuation Process for Level 3 Fair Value Measurements
The MUFG Group establishes valuation policies and procedures for measuring fair value, for which the risk management departments ensure that the valuation techniques used are logical, appropriate and consistent with market information. The financial accounting offices ensure that the valuation techniques are consistent with the accounting policies.
In accordance with the valuation policies and procedures, fair value is determined by the risk management departments or similar sections that are independent of the front offices in order to ensure objectivity and validity of measuring fair value. An analysis performed on the determined fair value is periodically reported to the management.
When valuation techniques are used to measure fair value, the valuation techniques are required to be pre-approved by the risk management departments. If the risk management departments determine that the techniques are not consistent with market practice, the valuation techniques are modified as necessary.
Fair value measurements are verified for reasonableness by the risk management departments which are responsible to perform an analytical review of the fair value measurements which includes a comparison with market trends and information.
For broker-dealer quotes, internal price verification procedures are performed by the risk management departments. Such verification procedures include analytical review of periodic price changes, comparison analysis between periodic price changes and changes of indices such as a credit default swap index, or inquiries regarding the underlying inputs and assumptions used by the broker-dealers such as probability of default, prepayment rate and discount margin.
Unobservable inputs used in a level 3 fair value measurement are internally estimated by the risk management departments based upon the market information such as observable inputs. The reasonableness of the inputs is validated by other risk management departments by comparison analysis between the market value of financial instruments using such level 3 inputs and the internally estimated fair value, to the extent necessary.
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis
Certain assets and liabilities may be measured at fair value on a nonrecurring basis in periods subsequent to their initial recognition. These assets are subject to fair value adjustments that result from the application of the lower of cost or fair value accounting or write-downs of individual assets. 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, 2013 and 2014:
		March 31, 2013													March 31, 2014
		Level 1			Level 2			Level 3				Total			Level 1			Level 2			Level 3			Total
												carrying value												carrying value
		(in millions)
Assets
Investment securities(1)		¥	—		¥	—		¥	6,466			¥	6,466		¥	—		¥	—		¥	5,469		¥	5,469
Loans			11,757			18,236			351,584				381,577			11,510			15,834			303,757			331,101
Loans held for sale			—			—			4,104				4,104			—			549			6,890			7,439
Collateral dependent loans			11,757			18,236			347,480				377,473			11,510			15,285			296,867			323,662
Premises and equipment			—			—			8,938				8,938			—			—			6,264			6,264
Intangible assets			—			—			549				549			—			—			228			228
Other assets			17,105			—			16,340				33,445			15,138			60,833			10,161			86,132
Investments in equity method investees(1)			17,105			—			11,751				28,856			15,138			60,833			7,902			83,873
Other			—			—			4,589				4,589			—			—			2,259			2,259
Total		¥	28,862		¥	18,236		¥	383,877			¥	430,975		¥	26,648		¥	76,667		¥	325,879		¥	429,194
Note:
-1		Includes investments valued at net asset value of ¥4,354 million and ¥3,483 million at March 31, 2013 and 2014, respectively. The unfunded commitments related to these investments are ¥1,603 million and ¥864 million at March 31, 2013 and 2014, respectively. These investments are private equity funds.
The following table presents losses recorded as a result of nonrecurring changes in fair value for the fiscal years ended March 31, 2013 and 2014:
		Losses for
		the fiscal year ended
		March 31,
		2013			2014
		(in millions)
Investment securities		¥	2,387		¥	4,113
Loans			92,438			58,660
Loans held for sale			380			106
Collateral dependent loans			92,058			58,554
Premises and equipment			5,536			13,899
Intangible assets			3,378			312
Goodwill			—			7,792
Other assets			16,820			33,905
Investments in equity method investees			14,635			32,824
Other			2,185			1,081
Total		¥	120,559		¥	118,681
Investment securities primarily include impaired cost-method investments which were written down to fair value during the period. The fair values are determined based on recent net asset value and projected future cash flows of investees.
Loans include loans held for sale and collateral dependent loans. Loans held for sale are recorded at the lower of cost or estimated fair value. The fair value of the loans held for sale is based on secondary market prices, recent transactions or discounted cash flows. These loans are principally classified in Level 3 of the fair value hierarchy, and when quoted prices are available but not traded actively, such loans held for sale are classified in Level 2 of the fair value hierarchy. Collateral dependent loans are measured at fair value of the underlying collateral. Collateral is comprised mainly of real estate and exchange-traded equity securities. The MUFG Group maintains an established process for internally determining the fair value of real estate, using the following valuation techniques and assumptions. Collateral dependent loans that are measured based on underlying real estate collateral are classified in Level 3 of the fair value hierarchy.
	Ÿ		Replacement cost approach. The replacement cost approach is primarily used for buildings and the land they are built on. This approach calculates the fair value of the collateral using the replacement cost of the property as of the valuation date. Replacement cost tables and useful life tables used for this approach are developed by subsidiaries of MUFG.
	Ÿ		Sales comparison approach. The sales comparison approach is mainly used for land. The fair value of the collateral is based on Japanese government official land prices and standard land prices, considering the results of comparison analysis between the official roadside value which is used for tax purposes and the related government official land and standard land prices.
	Ÿ		Income approach. The income approach is, as a general rule, applied to all rental properties based on the highest and best use concept. This approach calculates the fair value of the collateral using expected future cash flows. In this approach, the expected annual net operating income is discounted using the related capitalization yield. The significant assumptions within the income approach are the expected annual net operating income and capitalization yield. The expected annual net operating income is estimated based on rental income of the property. The capitalization yield is determined based on the location and use of the property by subsidiaries of MUFG. The capitalization yield may be adjusted to reflect the trends in locations, occupancy rates and rent level and other factors.
Premises and equipment consist of those assets which were written down to fair value. The fair values are determined based on prices obtained from an appraiser or discounted cash flows. These impaired premises and equipment are classified as Level 3 of the fair value hierarchy.
Intangible assets consist of those assets which were written down to fair value. The fair values are determined based on discounted cash flows. These impaired intangible assets are classified as Level 3 of the fair value hierarchy.
Other assets mainly consist of investments in equity method investees which were written down to fair value due to impairment. The MUFG Group records impairment losses when a decline in fair value below cost is other-than-temporary. The impairment losses are included in Equity in earnings (losses) of equity method investees—net in the accompanying consolidated statements of income. When investments in equity method investees are marketable equity securities, the fair values are determined based on quoted prices. Impaired investments in equity method investees which are marketable equity securities are classified in either Level 1 or Level 2 of the fair value hierarchy. When investments in equity method investees are nonmarketable equity securities, the fair values are determined using the same methodologies as impaired nonmarketable equity securities described above. Impaired investments in equity method investees which are nonmarketable equity securities are classified in Level 3 of the fair value hierarchy.
Fair Value Option
The MUFG Group elected the fair value option for foreign currency-denominated debt securities and equity securities held by BTMU and MUTB. The election was made to mitigate accounting mismatches related to fluctuations of foreign exchange rates by allowing the gains and losses on translation of these securities to be included in current earnings. Had the fair value option not been elected, the gains and losses on translation of these securities would have been reflected in OCI, while the gains and losses on translation of foreign currency-denominated financial liabilities would have been included in current earnings.
The MUFG Group also elected the fair value option for certain financial instruments held by MUSHD’s foreign subsidiaries because those financial instruments are managed on a fair value basis, and these exposures are considered to be trading-related positions. These financial assets are included in Other assets. These financial liabilities are mainly included in Other short-term borrowings and Long-term debt. Unrealized gains and losses on such financial instruments are recognized in the accompanying consolidated statements of income.
The following table presents the gains or losses recorded during the fiscal years ended March 31, 2013 and 2014 related to the eligible instruments for which the MUFG Group elected the fair value option:
		For the fiscal years ended March 31,
		2013										2014
		Trading			Foreign			Total				Trading			Foreign			Total
		account			exchange			changes in				account			exchange			changes in
		profits (losses)			gains (losses)			fair value				profits (losses)			gains (losses)			fair value
		(in millions)
Financial assets:
Receivables under resale agreements(1)		¥	(1,436	)	¥	—		¥	(1,436	)		¥	—		¥	—		¥	—
Trading account securities			311,827			2,185,903			2,497,730				(225,985	)		2,017,311			1,791,326
Other assets			(469	)		—			(469	)			(531	)		—			(531	)
Total		¥	309,922		¥	2,185,903		¥	2,495,825			¥	(226,516	)	¥	2,017,311		¥	1,790,795
Financial liabilities:
Other short-term borrowings(1)		¥	1,542		¥	—		¥	1,542			¥	4,064		¥	—		¥	4,064
Long-term debt(1)			22,097			—			22,097				87,877			—			87,877
Total		¥	23,639		¥	—		¥	23,639			¥	91,941		¥	—		¥	91,941
Note:
-1		Change in value attributable to the instrument-specific credit risk related to those financial assets and liabilities are not material.
The following table presents the differences between the aggregate fair value and the aggregate remaining contractual principal balance outstanding as of March 31, 2013 and 2014 for long-term receivables and debt instruments for which the fair value option has been elected:
		2013										2014
		Remaining			Fair value			Fair value				Remaining			Fair value			Fair value
		aggregate						over (under)				aggregate						over (under)
		contractual						remaining				contractual						remaining
		amounts						aggregate				amounts						aggregate
		outstanding						contractual				outstanding						contractual
								amounts										amounts
								outstanding										outstanding
		(in millions)
Financial assets:
Other assets		¥	3,000		¥	3,006		¥	6			¥	2,000		¥	2,000		¥	—
Total		¥	3,000		¥	3,006		¥	6			¥	2,000		¥	2,000		¥	—
Financial liabilities:
Long-term debt		¥	650,382		¥	564,845		¥	(85,537	)		¥	728,385		¥	687,927		¥	(40,458	)
Total		¥	650,382		¥	564,845		¥	(85,537	)		¥	728,385		¥	687,927		¥	(40,458	)
Interest income and expense and dividend income related to the assets and liabilities for which the fair value option is elected are measured based on the contractual rates and reported in the accompanying consolidated statements of income as either interest income or expense, depending on the nature of the related asset or liability.
Estimated Fair Value of Financial Instruments
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 the accompanying consolidated balance sheets as of March 31, 2013 and 2014:
		March 31, 2013
		Carrying			Estimated fair value
		amount			Total			Level 1				Level 2			Level 3
		(in billions)
Financial assets:
Cash and due from banks		¥	3,619		¥	3,619		¥	3,619			¥	—		¥	—
Interest-earning deposits in other banks			8,112			8,112			—				8,112			—
Call loans and funds sold			619			619			—				619			—
Receivables under resale agreements			5,660			5,660			—				5,660			—
Receivables under securities borrowing transactions			2,615			2,615			—				2,615			—
Investment securities(1)			2,492			2,778			272				495			2,011
Loans, net of allowance for credit losses(2)			97,254			98,729			12				284			98,433
Other financial assets			5,132			5,132			—				5,132			—
Financial liabilities:
Deposits
Non-interest-bearing		¥	18,810		¥	18,810		¥	—			¥	18,810		¥	—
Interest-bearing			129,420			129,480			—				129,480			—
Total deposits			148,230			148,290			—				148,290			—
Call money and funds purchased			4,011			4,011			—				4,011			—
Payables under repurchase agreements			15,700			15,700			—				15,700			—
Payables under securities lending transactions			3,993			3,993			—				3,993			—
Due to trust account			633			633			—				633			—
Other short-term borrowings			11,604			11,604			—				11,604			—
Long-term debt			11,622			11,980			—				11,969			11
Other financial liabilities			4,753			4,753			—				4,753			—
		March 31, 2014
		Carrying			Estimated fair value
		amount			Total			Level 1				Level 2			Level 3
		(in billions)
Financial assets:
Cash and due from banks		¥	3,689		¥	3,689		¥	3,689			¥	—		¥	—
Interest-earning deposits in other banks			20,501			20,501			—				20,501			—
Call loans and funds sold			919			919			—				919			—
Receivables under resale agreements			7,300			7,300			—				7,300			—
Receivables under securities borrowing transactions			4,210			4,210			—				4,210			—
Investment securities(1)			2,870			2,908			220				701			1,987
Loans, net of allowance for credit losses(2)			109,182			110,577			11				307			110,259
Other financial assets			5,832			5,832			—				5,832			—
Financial liabilities:
Deposits
Non-interest-bearing		¥	21,123		¥	21,123		¥	—			¥	21,123		¥	—
Interest-bearing			141,406			141,447			—				141,447			—
Total deposits			162,529			162,570			—				162,570			—
Call money and funds purchased			3,417			3,417			—				3,417			—
Payables under repurchase agreements			21,268			21,268			—				21,268			—
Payables under securities lending transactions			5,521			5,521			—				5,521			—
Due to trust account			750			750			—				750			—
Other short-term borrowings			11,077			11,077			—				11,077			—
Long-term debt			13,823			14,118			—				14,118			—
Other financial liabilities			5,123			5,123			—				5,123			—
Notes:
-1		Includes impaired securities 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.
-2		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.
The following section describes the valuation techniques adopted by the MUFG Group to estimate fair values of financial instruments that are not recorded at fair value on the accompanying consolidated balance sheets.
Cash and due from banks, Interest-earning deposits in other banks, Call loans and funds sold, Receivables under resale agreements and Receivable under securities borrowing transactions—For cash and due from banks, interest-earning deposits in other banks, call loans and funds sold, receivables under resale agreements and receivable under securities borrowing transactions, the carrying amounts are a reasonable estimate of the fair values because of their short-term nature and limited credit risk.
Investment securities—The fair values of investment securities other than those classified as available-for-sale or being held-to-maturity (i.e., nonmarketable equity securities) are not readily determinable as they do not have readily available quoted prices or secondary market prices. The fair values of certain nonmarketable equity securities, such as preferred stock convertible to marketable common stock issued by public companies are determined by utilizing commonly accepted valuation techniques to derive a fair value using the present value of dividend cash flows and option prices. For option prices, the Trinomial Tree Method determines possible paths of future stock prices using a forward rate for a common stock, and the price is calculated by multiplying the possible paths of future stock prices by the expected cash flows generated from the probability of exercising options or upon exercising of the options. Inputs used in the valuation include but are not limited to stock price, volatility and credit spread. The valuation is performed on a quarterly basis. At the time of any sale, the MUFG Group generally separately calculates a valuation to be used in sales price negotiations with the counterparty. The price agreed between the MUFG Group and a counterparty is also used as a reference for validating the appropriateness of previous valuations of the investment. The MUFG Group performs periodic validation of the valuation techniques. Specifically, the sensitivity and appropriateness of the inputs are verified by using different valuation techniques employed by the MUFG Group. It is not practicable for the MUFG Group to estimate the fair value of other nonmarketable securities issued by nonpublic companies for which a quoted price is not available. For these securities, the MUFG Group is unable to estimate fair value without incurring undue cost because they comprise investments in numerous nonpublic companies and each investment represents an insignificant percentage relative to each company. Therefore, the above summary does not include the carrying amounts of such investment securities. The carrying amounts not included in the above summary are ¥504 billion and ¥549 billion at March 31, 2013 and 2014, respectively.
Loans—The fair value of loans is estimated by discounting expected future cash flows based on types of loans, internal ratings and possibility of prepayment using the discount rates which include adjustments to reflect the expectations about possible variations to the current market rates. For certain residential loans with variable interest rates provided to individual home owners, the carrying amount is presented as the fair value since such carrying amount approximates the fair value, unless the creditworthiness of the borrower has changed significantly since the loan origination. Where quoted prices or estimated fair values are available, primarily for loans to refinancing countries, loans held for sales and certain other foreign loans, the fair values are based on such market prices and estimated fair values, including secondary market prices. For receivables from bankrupt, virtually bankrupt, and likely to become bankrupt borrowers, credit loss is estimated based mainly on the expected amount to be collected from collateral and guarantees. The carrying amount is presented as the fair value since the fair value approximates such carrying amount.
Other financial assets—The estimated fair values of other financial assets, which primarily include accrued interest receivable, customers’ acceptance liabilities and accounts receivable, approximate their carrying amounts. The above summary does not include the carrying amounts of investments in equity method investees amounting to ¥1,274 billion and ¥1,620 billion at March 31, 2013 and 2014, respectively.
Non-interest-bearing deposits, Call money and funds purchased, Payables under repurchase agreements and Payable under securities lending transactions—For non-interest-bearing deposits, the amount payable on demand as of the consolidated balance sheet date (i.e., the carrying amount) is considered to be the fair value. For call money and funds purchased, payables under repurchase agreements and payable under securities lending transactions, the carrying amount are reasonable estimate of the fair value because of their short-term nature and limited credit risk.
Interest–bearing deposits—For variable rate time deposits, the carrying amount is presented as the fair value because the market interest rate is reflected in such deposits within a short time period. Fixed rate time deposits are grouped by certain maturity lengths. The fair value of such deposits are estimated by discounting expected future cash flows using the discount rates that would be applied to newly accepted deposits.
Due to trust account—Since these are cash deposits with no maturity, the carrying amount is presented as the fair value as the fair value approximates such carrying amount.
Other short-term borrowings—For most other short-term borrowings, the carrying amount is presented as the fair value since such carrying amount approximates the fair value because of their short-term nature and limited credit risk.
Long-term debt—The fair value of corporate bonds issued by the MUFG Group is determined based on quoted prices of those corporate bonds. The fair value of fixed rate corporate bonds without quoted prices is the present value of expected future cash flows from these borrowings, which is discounted at an interest rate generally applicable to similar borrowings reflecting premium applicable to the MUFG Group. For variable rate corporate bonds without quoted prices, the carrying amount of such bonds is presented as the fair value since such carrying amount approximates the fair value. This is on the basis that the market interest rate is reflected in the fair value of such corporate bonds because such bond terms were set within a short time period and that there has been no significant impact on the fair value of those bonds.
Other financial liabilities—The estimated fair values of other financial liabilities, which primarily include accrued interest payable, bank acceptances, accounts payable and obligations under standby letters of credit and guarantees, approximate their carrying amounts. The fair values of obligations under standby letters of credit and guarantees are based on fees received or receivable by the MUFG Group.
The fair values of certain off-balance sheet financial instruments held for purposes other than trading, including commitments to extend credit and commercial letters of credit, are estimated using the fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the credit quality. The aggregate fair value of such instruments at March 31, 2013 and 2014 was not material.
The fair value estimates presented herein are based on pertinent information available to management at March 31, 2013 and 2014. These amounts have not been comprehensively reevaluated since that date, and therefore, current estimates of fair values may have changed significantly from the amounts presented herein.

StockBased_Compensation_Text_B

Stock-Based Compensation [Text Block]	12 Months Ended
	Mar. 31, 2014
Stock-Based Compensation [Text Block]	'
	32	STOCK-BASED COMPENSATION
	The following describes the stock-based compensation plans of MUFG, BTMU, MUTB, MUSHD, MUMSS and MUAH.
	MUFG, BTMU, MUTB, MUSHD and MUMSS
	MUFG, BTMU, MUTB, MUSHD and MUMSS have a stock-based compensation plan for directors, executive officers, corporate auditors and senior fellows (“officers”).
	The awards under the stock-based compensation plan are a type of stock option (referred to as “Stock Acquisition Rights”) to officers of MUFG, BTMU, MUTB, MUSHD and MUMSS. The Stock Acquisition Rights were normally issued and granted to these officers once a year until the fiscal year ended March 31, 2013. They are normally issued and granted to these officers except for corporate auditors once a year from the fiscal year ended March 31, 2014.
	The class of shares to be issued or transferred on exercise of the Stock Acquisition Rights is common stock of MUFG. The number of shares to be issued or transferred on exercise of each Stock Acquisition Right (“number of granted shares”) is 100 shares. In the event of stock split or stock merger of common stock of MUFG, the number of granted shares shall be adjusted in accordance with the ratio of the stock split or stock merger. If any events occur that require the adjustment to the number of granted shares (e.g., mergers, consolidations, corporate separations or capital reductions of MUFG), MUFG shall appropriately adjust the number of granted shares to a reasonable extent.
	The contractual term of the Stock Acquisition Rights is approximately 30 years from the date of grant. Some of the Stock Acquisition Rights vest on the date of grant and the rest of the rights graded-vest depending on the holders’ service periods as officers. The Stock Acquisition Rights are only exercisable after the date on which the following conditions are met: (1) holder as a director or an executive officer loses the status of both director and executive officer, and (2) holder as a corporate auditor loses the status of a corporate auditor, and (3) holder as a senior fellow loses the status of a senior fellow. The exercise price is ¥1 per share.
	The following is a summary of the Stock Acquisition Rights transactions of MUFG, BTMU, MUTB, MUSHD and MUMSS for the fiscal year ended March 31, 2014:
		Fiscal year ended March 31, 2014
		Number of			Weighted average			Weighted average		Aggregate
		shares			exercise price			remaining		intrinsic value
								contractual term
								(in years)		(in millions)
	Outstanding, beginning of fiscal year		23,574,800		¥	1
	Granted		2,951,500			1
	Exercised		(5,440,700	)		1
	Forfeited or Expired		(45,700	)		1
	Outstanding, end of fiscal year		21,039,900		¥	1			27.38	¥	11,909
	Exercisable, end of fiscal year		—		¥	—			—	¥	—
	The fair value of the Stock Acquisition Rights is estimated on the date of grant using the Black-Scholes option pricing model that uses the assumptions described in the following table. The risk-free rate is based on the Japanese government bonds yield curve in effect at the date of grant based on the expected term. The expected volatility is based on the historical data from traded common stock of MUFG. The expected term is based on the average service period of officers of MUFG, BTMU, MUTB, MUSHD and MUMSS, which represents the expected outstanding period of the Stock Acquisition Rights granted. The expected dividend yield is based on the dividend rate of common stock of MUFG at the date of grant.
		Fiscal years ended March 31,
		2012			2013			2014
	Risk-free interest rate		0.29%			0.11%			0.22%
	Expected volatility		44.96%			40.48%			30.16%
	Expected term		4 years			4 years			4 years
	Expected dividend yield		3.13%			3.18%			1.96%
	The weighted-average grant date fair value of the Stock Acquisition Rights granted for the fiscal years ended March 31, 2012, 2013 and 2014 was ¥33,700, ¥33,100 and ¥61,100 per 100 shares, respectively.
	The MUFG Group recognized ¥2,771 million, ¥2,862 million and ¥2,069 million of compensation costs related to the Stock Acquisition Rights with ¥1,127 million, ¥1,088 million and ¥737 million of the corresponding tax benefit for the fiscal years ended March 31, 2012, 2013 and 2014, respectively. As of March 31, 2014, the total unrecognized compensation cost related to the Stock Acquisition Rights was ¥253 million and it is expected to be recognized over 3 months.
	Cash received from the exercise of the Stock Acquisition Rights for the fiscal years ended March 31, 2012, 2013 and 2014 was ¥4 million, ¥4 million and ¥5 million, respectively. The actual tax benefit realized for the tax deductions from exercise of the Stock Acquisition Rights for the fiscal years ended March 31, 2012, 2013 and 2014 was ¥821 million, ¥675 million and ¥789 million, respectively.
	MUAH
	MUFG Americas Holdings Corporation Stock Bonus Plan (“Stock Bonus Plan”)
	Effective as of April 27, 2010, MUAH adopted the Stock Bonus Plan. Under the Stock Bonus Plan, MUAH grants restricted stock units settled in American Depositary Shares (“ADSs”) representing shares of common stock of MUAH’s indirect parent company, MUFG, to key employees at the discretion of the Executive Compensation and Benefits Committee of the Board of Directors (“the Committee”). The Committee determines the number of shares, vesting requirements, and other features and conditions of the restricted stock units. Under the Stock Bonus Plan, MUFG ADSs are purchased in the open market upon the vesting of the restricted stock units, through a revocable trust. There is no amount authorized to be issued under the Plan since all shares are purchased in the open market. These awards generally vest pro-rata on each anniversary of the grant date and become fully vested three years from the grant date, provided that the employee has completed the specified continuous service requirement. Generally, the grants vest earlier if the employee dies, is permanently and totally disabled, retires under certain grant, age and service conditions, or terminates employment under certain conditions.
	Under the Stock Bonus Plan, the restricted stock unit participants do not have dividend rights, voting rights or other stockholder rights. The grant date fair value of these awards is equal to the closing price of the MUFG ADSs on date of grant.
	The following table is a summary of the Stock Bonus Plan:
	Grant Date	Units			Fair Value			Vesting		Pro-rata
		Granted			of Stock			Duration		Vesting Date
	15-Apr-11		4,754,105		$	4.69			3 years		April 15
	15-Jul-11		180,740			4.94			3 years		15-Jul
	15-Apr-12		4,816,795			4.78			3 years		15-Apr
	15-Jul-12		74,175			4.72			3 years		15-Jul
	15-Apr-13		3,656,340			6.66			3 years		15-Apr
	15-Jul-13		78,725			6.67			3 years		15-Jul
	The following table is a rollforward of the restricted stock units under the Stock Bonus Plan for the fiscal years ended December 31, 2012 and 2013:
		Restricted Stock Units
		2012			2013
	Units outstanding, beginning of fiscal year		7,138,334			8,857,884
	Activity during the year:
	Granted		4,890,970			3,735,065
	Vested		(2,920,392	)		(4,325,661	)
	Forfeited		(251,028	)		(416,271	)
	Units outstanding, end of fiscal year		8,857,884			7,851,017
	The following table is a summary of MUAH’s compensation costs, the corresponding tax benefit for the fiscal years ended December 31, 2011, 2012 and 2013, and unrecognized compensation costs as of December 31, 2011, 2012 and 2013:
		December 31,
		2011			2012			2013
		(in millions)
	Compensation costs	¥	1,198		¥	1,437		¥	2,051
	Tax benefit		479			559			781
	Unrecognized compensation costs		1,710			2,251			2,846

Parent_Company_Only_Financial_

Parent Company Only Financial Information [Text Block]	12 Months Ended
	Mar. 31, 2014
Parent Company Only Financial Information [Text Block]	'
	33	PARENT COMPANY ONLY FINANCIAL INFORMATION
	Distributions of retained earnings of BTMU and MUTB are restricted in order to meet the minimum capital adequacy requirements under the Banking Law. Also, retained earnings of these banking subsidiaries are restricted, except for ¥5,511,969 million, in accordance with the statutory reserve requirements under the Company Law at March 31, 2014. See Notes 18 and 21 for further information.
	The following table presents the parent company only financial information of MUFG:
	Certain parent company condensed financial statement line items have been revised to conform to the current year presentation to separately present amounts for banking subsidiaries from amounts for subsidiaries and affiliated companies.
	Condensed Balance Sheets
		2013			2014
		(in millions)
	Assets:
	Cash and interest-earning deposits with banking subsidiaries	¥	127,303		¥	130,338
	Investments in subsidiaries and affiliated companies		12,849,434			14,439,803
	Banking subsidiaries		10,394,347			11,104,470
	Non-banking subsidiaries and affiliated companies		2,455,087			3,335,333
	Other assets		56,435			64,808
	Total assets	¥	13,033,172		¥	14,634,949
	Liabilities and Shareholders’ equity:
	Short-term borrowings from banking subsidiaries	¥	1,873,336		¥	1,917,647
	Long-term debt from non-banking subsidiaries and affiliated companies		384,107			384,445
	Long-term debt		59			78
	Other liabilities		166,875			127,739
	Total liabilities		2,424,377			2,429,909
	Total shareholders’ equity		10,608,795			12,205,040
	Total liabilities and shareholders’ equity	¥	13,033,172		¥	14,634,949
	Condensed Statements of Income
		2012			2013			2014
		(in millions)
	Income:
	Dividends from subsidiaries and affiliated companies	¥	270,923		¥	220,050		¥	255,175
	Banking subsidiaries		241,329			184,462			207,771
	Non-banking subsidiaries and affiliated companies		29,594			35,588			47,404
	Gain on conversion rate adjustment of Morgan Stanley’s convertible preferred stock		139,320			—			—
	Management fees from subsidiaries		16,708			17,154			18,922
	Interest income		99			77			73
	Foreign exchange gains (losses)—net		32,237			(59,375	)		(44,544	)
	Other income		5,614			634			294
	Total income		464,901			178,540			229,920
	Expense:
	Operating expenses		14,515			15,952			18,304
	Interest expense to subsidiaries and affiliated companies		37,905			30,501			28,897
	Interest expense		1,196			1,122			1,121
	Other expense		923			2,620			591
	Total expense		54,539			50,195			48,913
	Equity in undistributed net income of subsidiaries and affiliated companies—net		55,139			937,673			793,548
	Income before income tax expense (benefit)		465,501			1,066,018			974,555
	Income tax expense (benefit)		49,270			(3,106	)		(40,838	)
	Net income	¥	416,231		¥	1,069,124		¥	1,015,393
	Condensed Statements of Cash Flows
		2012			2013			2014
		(in millions)
	Operating activities:
	Net income	¥	416,231		¥	1,069,124		¥	1,015,393
	Adjustments and other		(133,368	)		(858,288	)		(790,050	)
	Net cash provided by operating activities		282,863			210,836			225,343
	Investing activities:
	Proceeds from sales and redemption of stock investment in subsidiaries and affiliated companies		17,371			21,160			—
	Purchases of equity investments in subsidiaries and affiliated companies		(20,000	)		(3,838	)		—
	Net decrease in interest-earning deposits with banks		18,696			8,996			1,494
	Other—net		(7,245	)		(10,623	)		(2,788	)
	Net cash provided by (used in) investing activities		8,822			15,695			(1,294	)
	Financing activities:
	Net increase (decrease) in short-term borrowings from subsidiaries		66,600			(34,989	)		(4	)
	Repayment of long-term debt		(8	)		(20	)		(16	)
	Repayment of long-term debt to subsidiaries and affiliated companies		(169,710	)		—			—
	Proceeds from sales of treasury stock		3			1			2
Payments to acquire treasury stock		(12	)		(16	)		(46	)
Dividends paid		(187,616	)		(187,778	)		(216,117	)
Other—net		(1,346	)		(212	)		(2,988	)
Net cash used in financing activities		(292,089	)		(223,014	)		(219,169	)
Net increase (decrease) in cash and cash equivalents		(404	)		3,517			4,880
Cash and cash equivalents at beginning of fiscal year		11,026			10,622			14,139
Cash and cash equivalents at end of fiscal year	¥	10,622		¥	14,139		¥	19,019

SEC_Registered_Funding_Vehicle

SEC Registered Funding Vehicles Issuing Non-Dilutive Preferred Securities [Text Block]	12 Months Ended
	Mar. 31, 2014
SEC Registered Funding Vehicles Issuing Non-Dilutive Preferred Securities [Text Block]	'
	34	SEC REGISTERED FUNDING VEHICLES ISSUING NON-DILUTIVE PREFERRED SECURITIES
	In February 2006, MUFG established MUFG Capital Finance 1 Limited, MUFG Capital Finance 2 Limited and MUFG Capital Finance 3 Limited, wholly-owned funding vehicles in the Cayman Islands, for the issuance of preferred securities to enhance the flexibility of its capital management.
	On March 17, 2006, MUFG Capital Finance 1 Limited, MUFG Capital Finance 2 Limited and MUFG Capital Finance 3 Limited registered with the SEC and issued $2,300,000,000 in 6.346% non-cumulative preferred securities, €750,000,000 in 4.850% non-cumulative preferred securities and ¥120,000,000,000 in 2.680% non-cumulative preferred securities (collectively, the “Preferred Securities”), respectively. Total net proceeds before expenses were approximately $4.17 billion. All of the ordinary shares of MUFG Capital Finance 1 Limited, MUFG Capital Finance 2 Limited and MUFG Capital Finance 3 Limited are owned by MUFG. MUFG fully and unconditionally guarantees the payment of dividends and payments on liquidation or redemption of the obligations under the Preferred Securities.
	The Preferred Securities entitle holders to receive a non-cumulative preferential cash dividend starting on July 25, 2006 and on January 25 and July 25 of each year thereafter. These funding vehicles will not be obligated to pay dividends on the Preferred Securities upon the occurrence of certain events relating to the financial condition of MUFG. From July 25, 2016, dividends on the Preferred Securities will be re-calculated at a floating rate per annum.
	The dollar-denominated and euro-denominated preferred securities are subject to redemption on any dividend payment date on or after July 25, 2016. All the Preferred Securities are subject to redemption in whole (but not in part) at any time upon the occurrence of specified events, in each case at the option of each of the funding vehicles and subject to necessary government approvals.
	The Preferred Securities are non-dilutive and not convertible into MUFG’s common shares. The Preferred Securities were included as part of MUFG’s Tier 1 capital at March 31, 2013 and 2014 under its capital adequacy requirements.
	These funding vehicles are not consolidated as the MUFG Group’s subsidiaries. See Note 25 for discussion. The funds raised through such funding vehicles are primarily loaned to the MUFG Group and presented as Long-term debt in the accompanying consolidated balance sheet at March 31, 2013 and 2014.
	On July 25, 2011, MUFG redeemed a total of ¥120,000,000,000 of non-cumulative and non-dilutive perpetual preferred securities issued by MUFG Capital Finance 3 Limited.

Subsequent_Events_Text_Block

Subsequent Events [Text Block]	12 Months Ended
	Mar. 31, 2014
Subsequent Events [Text Block]	'
	35	SUBSEQUENT EVENTS
	Acquisition and Cancellation of First Series of Class 5 Preferred Stock
	On April 1, 2014, MUFG acquired all of the First Series of Class 5 Preferred Stock issued in accordance with the provisions of Article 18, Paragraph 1 of the Articles of Incorporation of MUFG and Paragraph 14 of the Terms and Conditions of the said Preferred Stock, and canceled all the acquired shares in accordance with the provisions of Article 178 of the Company Law. As a result, the aggregate number of shares authorized to be issued by MUFG was decreased by 156,000,000 shares, and the aggregated number of First Series of Class 5 Preferred Stock authorized to be issued was deleted. Acquisition price was ¥2,500 per share, totaling ¥390,000 million.
	Approval of Dividends
	On June 27, 2014, the shareholders approved the payment of cash dividends to the shareholders of record on March 31, 2014, of ¥57.50 per share of Class 5 Preferred Stock, totaling ¥8,970 million, of ¥2.65 per share of Class 11 Preferred Stock, totaling ¥0 million, and ¥9 per share of Common stock, totaling ¥127,474 million.
	Stock Acquisition Rights
	On July 15, 2014, MUFG allotted the directors (excluding outside directors), executive officers and senior fellows of MUFG, BTMU, MUTB, MUSHD and MUMSS stock acquisition rights to acquire an aggregate amount of 3,019,400 shares of MUFG’s common stock. The stock acquisition rights have an exercise price of ¥1 per common share, and are exercisable until July 14, 2044.

Basis_Of_Financial_Statements_1

Basis Of Financial Statements And Summary Of Significant Accounting Policies [Text Block] (Policies)	12 Months Ended
	Mar. 31, 2014
Description Of Business [Policy Text Block]	'
	Description of Business
	Mitsubishi UFJ Financial Group, Inc. (“MUFG”) is a holding company for The Bank of Tokyo-Mitsubishi UFJ, Ltd. (“BTMU”), Mitsubishi UFJ Trust and Banking Corporation (“MUTB”), Mitsubishi UFJ Securities Holdings Co., Ltd. (“MUSHD”), Mitsubishi UFJ NICOS Co., Ltd. (“Mitsubishi UFJ NICOS”), and other subsidiaries. MUSHD is an intermediate holding company for Mitsubishi UFJ Morgan Stanley Securities Co., Ltd. (“MUMSS”). See Note 2 for more information on the securities joint venture with Morgan Stanley. 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.
	Effective July 1, 2014, BTMU operations in the Americas region were integrated with UnionBanCal Corporation (“UNBC”), an indirect wholly-owned subsidiary in the United States, and UNBC was renamed MUFG Americas Holdings Corporation (“MUAH”). Also effective July 1, 2014, the principal subsidiary of UNBC, Union Bank, N.A. (“Union Bank”) was renamed MUFG Union Bank, N.A. (“MUB”). Throughout these financial statements, the new corporate names, MUAH and MUB are used in place of UNBC and Union Bank, respectively.
Basis Of Financial Statements [Policy Text Block]	'
	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 which are not included in the consolidated financial statements issued by MUFG and certain of its subsidiaries in accordance with 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, 2012, 2013 and 2014, 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 a decrease of ¥1.56 billion, an increase of ¥1.48 billion, and an increase of ¥6.79 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, 2012, 2013 and 2014 which, if recorded, would have had material effects on consolidated total assets, loans, total liabilities, deposits or total equity as of March 31, 2012, 2013 and 2014.
Use Of Estimates [Policy Text Block]	'
	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 allowances of deferred tax assets, recognition and measurement of uncertain tax positions, 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 [Policy Text Block]	'
	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 are recorded in Total equity. Intercompany items 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 (losses) of these equity investees and other-than-temporary impairment are reported in Equity in earnings (losses) 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 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 entity, except certain VIEs that are deemed as investment companies. For VIEs that are considered investment companies, the MUFG Group determines whether it is the primary beneficiary by evaluation of whether it absorbs a majority of expected losses, receives a majority of expected residual returns or both.
	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 [Policy Text Block]	'
	Cash Flows—For the purposes of reporting cash flows, cash and cash equivalents are defined as those amounts included in the accompanying consolidated balance sheets under the caption Cash and due from banks with original maturities of 90 days or less. 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 [Policy Text Block]	'
	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 (loss) (“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 [Policy Text Block]	'
	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. 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, 2012, 2013 and 2014, there were no such transactions accounted for as sales.
Collateral [Policy Text Block]	'
	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 securities 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 [Policy Text Block]	'
	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 currently in Trading account profits—net, as appropriate. 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 [Policy Text Block]	'
	Investment Securities—Debt securities for which the MUFG Group has both the ability and positive intent to hold to maturity are classified as Securities being held-to-maturity and are carried at amortized cost. Debt securities that the MUFG Group may not hold to maturity and marketable equity securities, other than those classified as Trading account securities, are classified as Securities available-for-sale, and are carried at their fair values, with unrealized gains and losses reported on a net-of-tax basis within Accumulated OCI, net of taxes, which is a component of equity. Other investment securities include nonmarketable equity securities carried at their acquisition cost and investment securities held by subsidiaries that are investment companies or brokers and dealers. Such securities held by those subsidiaries are subject to the specialized industry accounting principles for investment companies and brokers and dealers applicable for those subsidiaries. Securities of those subsidiaries are carried at their fair values.
	For marketable equity securities, an other-than-temporary impairment is recognized in earnings when a decline in fair value below the cost is deemed other than temporary. For debt securities, an other-than-temporary impairment 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 other-than-temporary impairment is recognized in earnings, but the noncredit component is recognized in Accumulated OCI. In determining other-than-temporary declines in fair value to be recognized as an impairment loss on investment securities, the MUFG Group generally considers factors such as the ability and positive intent to hold the investments for a period of time sufficient to allow for anticipated recovery in fair value, the financial condition of the issuer, the extent of decline in fair value, and the length of time that the decline in fair value below cost has existed. 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 [Policy Text Block]	'
	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 the 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—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. Any ineffectiveness, which arises during the hedging relationship, is recognized in Non-interest income or expense in the period in which it arises. All qualifying hedging derivatives are valued at fair value and included in Other assets or Other liabilities, as appropriate. For cash flow hedges, the unrealized changes in fair value to the extent effective 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. The fair value of cash flow hedges related to forecasted transactions, if any, is recognized in Non-interest income or expense in the period when the forecasted transaction occurs. 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 Non-interest income or expense.
Loans [Policy Text Block]	'
	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 sales 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. Interest income on loans that are not impaired is accrued and credited to interest income as it is earned. Unearned income and discounts or premiums on purchased loans are deferred and recognized over the remaining contractual terms of the loans using a method that approximates the interest method when such purchased loans are outside the scope of the guidance on loans and debt securities acquired with deteriorated credit quality as described below.
	The MUFG Group classifies its loan portfolio into the following portfolio segments—Commercial, Residential, Card, MUAH, and Bank of Ayudhya Public Company Limited (“Krungsri”) 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.
	Originated loans are considered impaired when, based on current information and events, it is probable that the MUFG Group will be unable to collect all the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Past due status is determined based on the contractual terms of the loan and the actual number of days since the last payment date, and is considered in determining impairment. Originated loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, and the amount of the shortfall in relation to the principal and interest owed. Impairment is generally evaluated on a loan-by-loan basis by either the present value of expected future cash flows discounted at the loan’s effective interest rate, the loan’s observable market price, or the fair value of the collateral if the loan is collateral dependent.
	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, MUAH, 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 restructured as a TDR, the borrower is not delinquent under the restructured 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 restructured 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.
	A loan that has been modified into a TDR is considered to be impaired until it matures, is repaid, or is otherwise liquidated, regardless of whether the borrower performs under the modified terms. Because loans modified in TDRs are considered to be impaired, these loans are measured for impairment using the MUFG Group’s established asset-specific allowance methodology, which considers the expected default rates for the modified loans. See “Allowance for Credit Losses” for a discussion for each portfolio segment.
	In accordance with the guidance on loans and debt securities acquired with deteriorated credit quality, impaired loans acquired for which it is probable that the MUFG Group will be unable to collect all contractual receivables are initially recorded at the present value of amounts expected to be received. For these impaired loans, the related valuation allowances are not carried over or created initially. Accretable yield is limited to the excess of the investor’s estimate of undiscounted cash flows over the investor’s initial investment in the loan. Subsequent increases in cash flows expected to be collected are recognized prospectively through adjustment of the loan’s yield over its remaining life after reduction of any remaining allowance for credit losses for the loan established after its acquisition, if any, while any decrease in such cash flows below those initially expected at acquisition plus additional cash flows expected to be collected arising from changes in estimate after acquisition is recognized as an impairment.
Loan Securitization [Policy Text Block]	'
	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 [Policy Text Block]	'
	Allowance for Credit Losses—The MUFG Group maintains an allowance for credit losses to absorb probable losses inherent in the loan portfolio. 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 and the allowance is at the appropriate amount to absorb probable losses inherent in the loan portfolio. During the fiscal year ended March 31, 2014, the MUFG Group did not make any significant changes to the methodologies or policies used to determine its allowance for credit losses.
	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 or 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. The MUFG Group updates these conditions and probable loss on a regular basis and upon the occurrence of unexpected change in the economic environment.
	The methodologies used to estimate the allowance and the charge-off policy for each portfolio segment are as follows:
	Commercial segment
	In the Commercial segment, the methodology for assessing the appropriateness of the allowance consists of several key elements, which include the allocated allowance for individual loans specifically identified for evaluation, the formula allowance, the allocated allowance for country risk exposure, and the allocated allowance for large groups of smaller-balance homogeneous loans.
	The allocated allowance for individual loans specifically identified for evaluation represents the impairment allowance determined in accordance with the guidance on accounting by creditors for impairment of a loan. The factors considered by management in determining impairment are the internal credit rating assigned to each borrower which represents the borrower’s creditworthiness determined based on payment status, number of delinquencies, and the probability of collecting principal and interest payments when due. The impairment of a loan is measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate, or on the loan’s observable market price, or based on the fair value of the collateral if the loan is collateral dependent.
	The formula allowance is applied to loans that are categorized as Normal or Close Watch, excluding loans identified as a TDR, based on the internal credit rating and historical loss factors which are based on the loss experience. See Note 4 for the information on loans to borrowers categorized based on the internal borrower rating. Estimated losses inherent in the loans at the balance sheet date are calculated by multiplying the default ratio by the nonrecoverable ratio (determined as a complement of the recovery ratio). The default ratio is determined by each internal credit rating, taking into account the historical number of defaults of borrowers within each internal credit rating divided by the total number of borrowers. The recovery ratio is mainly determined by the historical experience of collections against loans in default. The default ratio, the recovery ratio and other indicators are continually reviewed to determine the appropriate level of the allowance. Because the evaluation of inherent loss for these loans involves a high degree of uncertainty, subjectivity and judgment, the estimation of the formula allowance is back-tested by comparing the allowance with the actual results subsequent to the balance sheet date. The results of such back-testing are evaluated by management to determine whether the manner and level of formula allowance needs to be changed in subsequent years.
	The allocated allowance for country risk exposure is a country-specific allowance for Normal and Close Watch loans, excluding loans identified as a TDR. The allowance is established to supplement the formula allowance for these loans, based on an estimate of probable losses relating to the exposure to countries that are identified by management to have a high degree of transfer risk. The measurement is based on a function of default probability and the recovery ratio with reference to external credit ratings. For the allowance for individual cross-border loans specifically identified for evaluation, the MUFG Group incorporates transfer risk in its determination of the related allowance.
	The allocated allowance for large groups of smaller-balance homogeneous loans is established through a process that begins with estimates of probable losses inherent in the portfolio. These estimates are based upon various analyses, including historical delinquency and historical loss experience.
	Loans that have been modified into a TDR are treated as impaired loans. 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 effective interest rate of the loans prior to modification.
	In relation to loans categorized as Legally/Virtually Bankrupt, the 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 that are pooled by their internal credit ratings based on the number of delinquencies. The loans in this segment are generally secured by collateral. Collateral values are based on internal valuation sources, and the allowance is determined for unsecured amounts. The allowance for the nondelinquent group of loans is determined based on historical loss experience. For delinquent groups of loans, the MUFG Group determines the allowance based on the probability of insolvency by the number of actual delinquencies and historical loss experience.
	Loans that have been modified into a TDR are treated as impaired loans. 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 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 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 that are pooled by their internal credit rating based on the number of delinquencies. The allowance for loans in this segment is generally determined based on the probability of insolvency by the number of actual delinquencies and historical loss experience. For calculating the allocated allowance for loans specifically identified for evaluation, impaired loans are aggregated for the purpose of measuring impairment using historical loss factors.
	Loans that have been modified into a TDR are treated as impaired loans, and the allowance for credit losses is determined using the discounted cash flow method whereby the estimated future cash flows are discounted using the 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.
	MUAH segment
	In the MUAH segment, the methodology for assessing the appropriateness of the allowance consists of several key elements, which include the allocated allowance for individual loans specifically identified for evaluation, the formula allowance, the allocated allowance for large groups of smaller-balance homogeneous loans, and the unallocated allowance.
	The allocated allowance for individual loans specifically identified for evaluation is established for loans when management determines that the MUFG Group will be unable to collect all amounts due according to the contractual terms of the loan agreement, including interest payments. Impaired loans are carried at the lower of the recorded investment in the loan, the present value of expected future cash flows discounted at the loan’s effective rate, the loan’s observable market price, or the fair value of the collateral, if the loan is collateral dependent.
	The formula allowance is calculated by applying historical loss factors to outstanding loans. Historical loss factors are based on the historical loss experience and may be adjusted for significant factors that, in management’s judgment, affect the collectibility of the portfolio as of the balance sheet date.
	The allocated allowance for large groups of smaller-balance homogeneous loans is established for consumer loans as well as for smaller balance commercial loans. These loans are managed by a pool basis, and loss factors are based on expected net charge-off ranges.
	The unallocated allowance represents an estimate of additional losses inherent in the loan portfolio and is composed of attribution factors, which are based upon management’s evaluation of various conditions that are not directly measured in the determination of the allocated allowance. The conditions used for consideration of the unallocated allowance at each balance sheet date include factors such as, existing general economic and business conditions affecting the key lending areas and products of the MUFG Group, credit quality trends and risk identification, collateral values, loan volumes, underwriting standards and concentrations, specific industry conditions, recent loss experience and the duration of the current business cycle. The MUFG Group reviews these conditions and has an internal discussion with senior credit officers on a quarterly basis.
	Loans that have been modified into a TDR are treated as impaired loans. 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 effective interest rate of the loans prior to modification.
	Commercial loans are generally considered uncollectible based on an evaluation of the financial condition of a borrower as well as the value of any collateral and, when considered to be uncollectible, loans are charged off in whole or in part. Consumer loans are generally considered uncollectible based on past due status and the value of any collateral and, when considered to be uncollectible, loans are charged off in whole or in part.
	Krungsri segment
	In the Krungsri segment, the methodology for assessing the appropriateness of the allowance consists of several key elements, which include the allocated allowance for individual loans specifically identified for evaluation, the formula allowance, and the allocated allowance for large groups of smaller-balance homogeneous loans.
	The allocated allowance for individual loans specifically identified for evaluation is established for loans when management determines that the MUFG Group will be unable to collect all amounts due according to the contractual terms of the loan agreement, including interest payments. Impaired loans are carried at the lower of the recorded investment in the loan, the present value of expected future cash flows discounted at the loan’s effective rate, the loan’s observable market price, or the fair value of the collateral, if the loan is collateral dependent.
	The formula allowance is calculated by applying historical loss factors to outstanding loans. Historical loss factors are based on the historical loss experience and may be adjusted for significant factors that, in management’s judgment, affect the collectibility of the portfolio as of the balance sheet date.
	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 by a pool basis, and loss factors are based on expected net charge-off ranges.
	Loans that have been modified into a TDR are treated as impaired loans. 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 effective interest rate of the loans prior to modification.
	Loans to customers are charged off in the year that they are determined to be uncollectible considering the financial condition of a borrower.
Allowance For Off-Balance Sheet Credit Instruments [Policy Text Block]	'
	Allowance for Off-Balance Sheet Credit Instruments—The MUFG Group maintains an allowance for credit losses on off-balance sheet credit instruments, 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.
	Net changes in the allowance for off-balance sheet credit instruments are accounted for as Other non-interest expenses.
Premises And Equipment [Policy Text Block]	'
	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, BTMU and MUTB 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			10 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.
	Asset retirement obligations related to restoration of certain leased properties upon lease termination are recorded in Other liabilities with a corresponding increase in leasehold improvements. The amounts represent the present value of expected future cash flows associated with returning such leased properties to their original condition. The difference between the gross and present value of expected future cash flows is accreted over the life of the related leases as a non-interest expense.
Goodwill [Policy Text Block]	'
	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. A reporting unit is an operating segment, or an identified business unit one level below an operating segment. An impairment loss is recognized to the extent that the carrying amount of goodwill exceeds its implied fair value.
Intangible Assets [Policy Text Block]	'
	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		Amortization method
			(years)
	Software			2 to 10	Straight-line
	Core deposit intangibles			4 to 19	Declining-balance
	Customer relationships			7 to 27	Straight-line, Declining-balance
	Trade names			2 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.
	The MUFG Group capitalizes certain costs associated with the acquisition or development of internal-use software. Costs subject to capitalization are salaries and employee benefits for employees who are directly associated with and who devote time to the internal-use computer software project, to the extent of time spent directly on the project. Once the software is ready for its intended use, the MUFG Group begins to amortize capitalized costs on a straight-line basis.
Accrued Severance And Pension Liabilities [Policy Text Block]	'
	Accrued Severance and Pension Liabilities—The MUFG Group has defined benefit pension plans and other postretirement benefit plans, including severance indemnities plans. 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 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. The costs of the plans, based on actuarial computations of current and future employee benefits, were charged to Salaries and employee benefits. The MUFG Group measures plan assets and benefit obligations as of the date of the consolidated balance sheets.
Long-Term Debt [Policy Text Block]	'
	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 terms of the long-term debt.
Obligations Under Guarantees [Policy Text Block]	'
	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 ratably over the guarantee period.
Allowance For Repayment Of Excess Interest [Policy Text Block]	'
	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 [Policy Text Block]	'
	Fees and Commissions—Revenue recognition of major components of fees and commissions is as follows:
		Ÿ		Fees on funds transfer and collection services, service charges on deposit accounts, fees and commissions on securities business, fees on real estate business, insurance commissions, fees and commissions on stock transfer agency services, fees on investment funds business, and fees and commissions from other services are generally recognized as revenue when the related services are performed or recognized over the period that the service is provided.
		Ÿ		Fees from trade-related financing services are recognized over the period of the financing.
		Ÿ		Trust fees 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 guarantee of trust principal, trust fees are determined based on the profits earned by individual trust account during the trust accounting period, less deductions, including provision for reserve, 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.
		Ÿ		Annual fees and royalty and other service charges related to credit card business are recorded on a straight-line basis as services are provided.
		Ÿ		Interchange income from the credit card business is recognized as billed.
		Ÿ		Fees on guarantees are generally recognized over the contractual periods of the respective guarantees. Amounts initially recorded as a liability corresponding to the obligations at fair value are generally recognized as revenue over the terms of the guarantees as the MUFG Group is deemed to be released from the risk under guarantees.
Income Taxes [Policy Text Block]	'
	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.
	Uncertain tax positions are recorded on the basis of a two-step process whereby (1) it is determined whether it is more likely than not that the tax position will be sustained on the basis of its technical merits, and (2) for those tax positions that meet the more-likely-than-not recognition threshold, the MUFG Group recognizes the largest amount of tax benefit that is more than 50% likely to be realized upon ultimate settlement with the related tax authority. The MUFG Group recognizes interest and penalties related to unrecognized tax benefits within the income tax expense. Accrued interest and penalties are included within Other liabilities.
Free Distributions Of Common Shares [Policy Text Block]	'
	Free Distributions of Common Shares—As permitted by the Company Law of Japan (the “Company Law”), 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 17 for further information.
Earnings Per Common Share [Policy Text Block]	'
	Earnings 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 [Policy Text Block]	'
	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 (Loss) [Policy Text Block]	'
	Comprehensive Income (Loss)—Comprehensive income (loss) 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.
Stock-Based Compensation [Policy Text Block]	'
	Stock-Based Compensation—MUFG and certain of its subsidiaries have stock-based compensation plans. Stock-based compensation expenses are recognized based on the grant date fair value of share based compensation over the period during which an employee is required to provide service in accordance with the terms of the plans. See Note 32 for further discussion of stock-based compensation plans.
Reclassifications [Policy Text Block]	'
	Reclassifications
	Certain reclassifications and format changes have been made to the consolidated financial statements for the fiscal years ended March 31, 2012 and 2013 to conform to the presentation for the fiscal year ended March 31, 2014.
	These reclassifications and format changes include the integration of “Provision (reversal) for repayment of excess interest” into “Other non-interest expenses” which had previously been presented as a separate line item in non-interest expense in the accompanying consolidated statements of income for the fiscal years ended March 31, 2012 and 2013.
	These reclassifications and format changes did not result in a change to previously reported financial positions and results of operations.
Accounting Changes [Policy Text Block]	'
	Accounting Changes
	Amendments to Accounting Scope of Embedded Credit Derivatives—In March 2010, the FASB issued new guidance which clarifies the scope exception related to embedded credit derivatives. This guidance addresses how to determine which embedded credit derivative features, including those in collateralized debt obligations (“CDOs”) and synthetic CDOs, are considered to be embedded derivatives that are exempt from potential bifurcation and separate accounting requirement. This guidance is effective for the first interim reporting period beginning after June 15, 2010 with early application permitted at the beginning of the first interim reporting period beginning after the issuance of this new guidance. In initially adopting this new guidance, an entity may elect the fair value option for any investment in a beneficial interest in a securitized financial asset. The election of the fair value option is irrevocable and should be determined on an instrument-by-instrument basis at the beginning of the reporting period of initial adoption. The MUFG Group adopted this guidance on April 1, 2011, and recorded a ¥135 million increase to retained earnings as a cumulative effect adjustment.
	Amendments to the Presentation of Comprehensive Income—In February 2013, the FASB issued new guidance which requires an entity to present separately for each component of OCI, current period reclassifications out of Accumulated OCI and other amounts of current period OCI. In addition, the guidance requires an entity to report the effect of significant reclassifications out of Accumulated OCI on the respective line items in net income if the amount being reclassified is required under U.S. GAAP to be reclassified in its entirety to net income. For other amounts that are not required under U.S. GAAP to be reclassified in their entirety to net income in the same reporting period, an entity is required to cross-reference other disclosures required under U.S. GAAP that provide additional detail about those amounts. The amendments in this guidance are effective for fiscal years, and interim periods within those years, beginning after December 15, 2012. Early adoption is permitted. The MUFG Group adopted this guidance on April 1, 2013. As a result of the adoption of this guidance, the presentation of the MUFG Group’s consolidated statements of comprehensive income and consolidated statements of equity were changed, while disclosures related to Accumulated OCI were added. This guidance had no impact on its financial position and result of operations. See Note 19 for further details of the required disclosures.
	Disclosures about Offsetting Assets and Liabilities—In December 2011, the FASB issued new guidance which requires that entities disclose both gross information and net information about both instruments and transactions eligible for offset in the statement of financial position and instruments and transactions subject to an agreement similar to a master netting arrangement. In January 2013, the FASB issued further guidance which provides clarification that the scope of the guidance on disclosures about offsetting assets and liabilities applies to derivatives, including bifurcated embedded derivatives, repurchase agreements and reverse repurchase agreements, and securities borrowing and securities lending transactions that are either offset in accordance with existing guidance or subject to an enforceable master netting arrangement or similar agreement. An entity should provide the disclosures required by those amendments retrospectively for all comparative periods presented. The MUFG Group adopted this guidance on April 1, 2013, which had no impact on its financial position and results of operations. See Note 15 for further details of the required disclosures.
	Subsequent Accounting for an Indemnification Asset Recognized at the Acquisition Date as a Result of a Government-Assisted Acquisition of a Financial Institution—In October 2012, the FASB issued new guidance, which clarifies the accounting guidance for subsequently measuring an indemnification asset recognized as a result of a government-assisted acquisition of a financial institution when a change in cash flows expected to be collected occurs. This guidance specifies that an entity shall subsequently account for the change in measurement of the indemnification asset on the same basis as the change in assets subject to the indemnification and limit any amortization of changes in value to the lesser of the contractual term of the indemnification agreement or the remaining life of the indemnified assets. This guidance is effective for fiscal years, and interim periods within those years, beginning on or after December 15, 2012. Early adoption is permitted. The MUFG Group adopted this guidance on April 1, 2013, which had no impact on its financial position and results of operations.
Recently Issued Accounting Pronouncements [Policy Text Block]	'
	Recently Issued Accounting Pronouncements
	Obligations Resulting from Joint and Several Liability Arrangements for Which the Total Amount of the Obligation Is Fixed at the Reporting Date—In February 2013, the FASB issued new guidance for the recognition, measurement, and disclosure of obligations resulting from joint and several liability arrangements for which the total amount of the obligation within the scope of this guidance is fixed at the reporting date, except for obligations addressed within existing guidance in U.S. GAAP. This guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. The MUFG Group does not expect that the adoption of the guidance will have a material impact on its financial position and results of operations.
	Parent’s Accounting for the Cumulative Translation Adjustment upon Derecognition of Certain Subsidiaries or Groups of Assets within a Foreign Entity or of an Investment in a Foreign Entity—In March 2013, the FASB issued new guidance which requires the release of an entity’s cumulative translation adjustment into net income only if the sale or transfer results in the complete or substantially complete liquidation of the foreign entity in which the subsidiary or group of assets had resided. This guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. The MUFG Group does not expect that the adoption of the guidance will have a material impact on its financial position and results of operations.
	Amendments to the Scope, Measurement, and Disclosure Requirements for Investment Companies—In June 2013, the FASB issued guidance that changed the approach for determining whether an entity is an investment company under U.S. GAAP, and set forth certain measurement and disclosure requirements. This guidance changes the approach to the investment company assessment, clarifies the characteristics of an investment company, and provides comprehensive guidance for assessing whether an entity is an investment company. In addition, this guidance requires an investment company to measure noncontrolling ownership interests in other investment companies at fair value rather than using the equity method of accounting. Also, this guidance requires additional disclosures about an entity’s status as an investment company and financial support provided or contractually required to be provided by an investment company to its investees. This guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. Early adoption of this guidance is prohibited. The MUFG Group does not expect that the adoption of the guidance will have a material impact on its financial position and results of operations.
	Accounting for Investments in Qualified Affordable Housing Projects—In January 2014, the FASB issued guidance on accounting for investments by a reporting entity in flow-through limited liability entities that manage or invest in affordable housing projects that qualify for the low-income housing tax credit. The guidance permit reporting entities to make an accounting policy election to account for their investments in qualified affordable housing projects using the proportional amortization method if certain conditions are met. Under the proportional amortization method, an entity amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognizes the net investment performance in the income statement as a component of income tax expense (benefit). For those investments in qualified affordable housing projects not accounted for using the proportional amortization method, the investment should be accounted for as an equity method investment or a cost method investment. This guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2014 and should be applied retrospectively to all periods presented. The MUFG Group has not completed the study of what effect this guidance will have on its financial position and results of operations.
	Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure—In January 2014, the FASB issued guidance that clarifies that an in substance repossession or foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either (1) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or (2) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Additionally, the amendments require interim and annual disclosures of both the amount of foreclosed residential real estate property held by the creditor and the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure according to local requirements of the applicable jurisdiction. This guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2014. Early adoption of this guidance is permitted. The MUFG Group has not completed the study of what effect this guidance will have on its financial position and results of operations.
	Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity—In April 2014, the FASB issued new guidance that changes the requirements for reporting discontinued operations. A disposal of a component of an entity or a group of components of an entity is required to be reported in discontinued operations if the disposal represents a strategic shift that has (or will have) a major effect on an entity’s operations and financial results when the component of an entity or group of components of an entity meets certain criteria to be classified as held for sale or disposed. This guidance requires an entity to present, for each comparative period, the assets and liabilities of a disposal group that includes a discontinued operation separately in the asset and liability sections, respectively, of the statement of financial position and additional disclosures. Also, this guidance requires an entity to provide disclosures about a disposal of an individually significant component of an entity that does not qualify for discontinued operations presentation in the financial statements. This guidance is effective for all disposals (or classifications as held for sale) of components of an entity that occur within annual periods beginning on or after December 15, 2014, and interim periods within those years and all businesses that, on acquisition, are classified as held for sale that occur within annual periods beginning on or after December 15, 2014, and interim periods within those years. The MUFG Group does not expect that the adoption of the guidance will have a material impact on its financial position and results of operations. In case there will be discontinued operations, the MUFG Group should provide related disclosures as required in this guidance.
	Revenue from Contracts with Customers—In May 2014, the FASB issued new guidance which supersedes the current revenue recognition requirements, including most industry-specific guidance. The core principle of the guidance is that an entity should recognize revenue to depict the transfers of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance also requires additional disclosures about the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers, including significant judgments and changes in judgments, and assets recognized from the costs incurred to obtain or fulfill a contract. This guidance is effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early application is not permitted. The MUFG Group has not completed the study of what effect this guidance will have on its financial position and results of operations.
	Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures—In June 2014, the FASB issued new guidance which changes the accounting for both repurchase-to-maturity transactions and repurchase financing arrangements. The guidance also requires an entity to disclose information about certain transactions accounted for as a sale in which the transferor retains substantially all of the exposure to the economic return on the transferred financial assets through an agreement with the same counterparty, and information about repurchase agreements, securities lending transactions, and repurchase-to-maturity transactions that are accounted for as secured borrowings. This guidance is effective for interim and annual periods beginning after December 15, 2014, except for the disclosure requirement about repurchase agreements, securities lending transactions, and repurchase-to-maturity transactions accounted for as secured borrowings, that is effective for annual periods beginning after December 15, 2014, and for interim periods beginning after March 15, 2015. The MUFG Group has not completed the study of what effect this guidance will have on its financial position and results of operations.

Basis_Of_Financial_Statements_2

Basis Of Financial Statements And Summary Of Significant Accounting Policies [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Estimated Useful Lives Of Premises And Equipment [Table Text Block]	'
		Years
	Buildings		15 to 50
	Equipment and furniture		2 to 20
	Leasehold improvements		10 to 39
Useful Life Of Intangible Assets And Amortization Method By Major Class [Table Text Block]	'
		Useful lives		Amortization method
		(years)
	Software		2 to 10	Straight-line
	Core deposit intangibles		4 to 19	Declining-balance
	Customer relationships		7 to 27	Straight-line, Declining-balance
	Trade names		2 to 40	Straight-line

Business_Developments_Text_Blo1

Business Developments [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Statement Of The Estimated Fair Values Of The Assets Acquired And Liabilities Assumed [Table Text Block]	'
		(in millions)
	Loans	¥	2,934,656
	Goodwill		217,386
	Intangible assets(1)		214,607
	Total assets		4,144,517
	Deposits—Total deposits		2,488,862
	Total liabilities		3,396,454
	Note:
	-1	Intangible assets primarily include ¥124,290 million of customer relationships and ¥59,891 million of core deposit intangibles with weighted average amortization periods of 11 years.
Pro Forma Statement Of Income [Table Text Block]	'
		Fiscal years ended March 31,
		2013		2014
		(in millions)
	Statement of income data:
	Net interest income	¥	1,967,113	¥	2,102,038
	Non-interest income—Total		2,127,990		1,903,620
	Net income attributable to Mitsubishi UFJ Financial Group		1,084,373		1,035,502

Investment_Securities_Text_Blo1

Investment Securities [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Amortized Cost, Gross Unrealized Gains (Losses) And Fair Value Of Investment Securities [Table Text Block]	'
	At March 31, 2013:	Amortized			Gross			Gross			Fair value
		cost			unrealized			unrealized
					gains			losses
		(in millions)
	Securities available-for-sale:
	Debt securities:
	Japanese national government and Japanese government agency bonds	¥	49,159,827		¥	323,725		¥	3,598		¥	49,479,954
	Japanese prefectural and municipal bonds		207,227			9,852			4			217,075
	Foreign governments and official institutions bonds		701,504			17,814			3,022			716,296
	Corporate bonds		1,868,599			55,044			697			1,922,946
	Residential mortgage-backed securities		1,204,219			20,902			1,501			1,223,620
	Commercial mortgage-backed securities		260,057			9,895			570			269,382
	Asset-backed securities		813,312			1,132			3,766			810,678
	Other debt securities(1)		109,365			2,247			4,898			106,714
	Marketable equity securities		2,224,060			1,874,159			815			4,097,404
	Total	¥	56,548,170		¥	2,314,770		¥	18,871		¥	58,844,069
	Securities being held-to-maturity:
	Debt securities:
	Japanese national government and Japanese government agency bonds	¥	232,881		¥	1,883		¥	—		¥	234,764
	Foreign governments and official institutions bonds		284,315			2,409			—			286,724
	Corporate bonds		23,555			173			—			23,728
	Residential mortgage-backed securities		86,722			1,056	(2)		11			87,767
	Asset-backed securities		1,503,691			51,396			—	(3)		1,555,087
	Total	¥	2,131,164		¥	56,917		¥	11		¥	2,188,070
	Notes:
	-1	Other debt securities in the table above include ¥106,699 million of private placement debt conduit bonds.
	-2	The MUFG Group reclassified residential mortgage-backed securities, which totaled ¥12,356 million at fair value, from Securities available-for-sale to Securities being held-to-maturity during the fiscal year ended March 31, 2013. As a result of the reclassification, the unrealized gains before taxes at the date of reclassification remaining in Accumulated OCI in the accompanying consolidated balance sheets was ¥395 million at March 31, 2013 and not included in the table above.
	-3	MUAH reclassified collateralized loan obligations (“CLOs”), which totaled ¥111,895 million at fair value, from Securities available-for-sale to Securities being held-to-maturity during the fiscal year ended March 31, 2010. As a result of the reclassification, the unrealized losses before taxes at the date of reclassification remaining in Accumulated OCI in the accompanying consolidated balance sheets was ¥1,460 million at March 31, 2013 and not included in the table above.
	At March 31, 2014:	Amortized			Gross			Gross			Fair value
		cost			unrealized			unrealized
					gains			losses
		(in millions)
	Securities available-for-sale:
	Debt securities:
	Japanese national government and Japanese government agency bonds	¥	41,388,592		¥	201,539		¥	1,122		¥	41,589,009
	Japanese prefectural and municipal bonds		195,176			7,979			24			203,131
	Foreign governments and official institutions bonds		1,272,181			13,460			14,220			1,271,421
	Corporate bonds		1,523,026			38,920			817			1,561,129
	Residential mortgage-backed securities		1,011,644			665			31,714			980,595
	Commercial mortgage-backed securities		208,690			826			9,370			200,146
	Asset-backed securities		1,060,844			2,747			5,547			1,058,044
	Other debt securities(1)		184,495			3,650			3,199			184,946
	Marketable equity securities		2,456,992			2,384,949			4,710			4,837,231
	Total	¥	49,301,640		¥	2,654,735		¥	70,723		¥	51,885,652
	Securities being held-to-maturity:
	Debt securities:
	Japanese national government and Japanese government agency bonds	¥	214,968		¥	870		¥	—		¥	215,838
	Foreign governments and official institutions bonds		22,091			1,099			—			23,190
	Corporate bonds		5,548			7			—			5,555
	Residential mortgage-backed securities		526,431			883	(2)		7,304	(3)		520,010
	Commercial mortgage-backed securities		159,532			343			1,282	(3)		158,593
	Asset-backed securities		1,778,412			35,908			2,379			1,811,941
	Total	¥	2,706,982		¥	39,110		¥	10,965		¥	2,735,127
	Notes:
	-1	Other debt securities in the table above include ¥182,613 million of private placement debt conduit bonds.
	-2	As a result of the reclassification during the fiscal year ended March 31, 2013, the unrealized gains before taxes at the date of reclassification remaining in Accumulated OCI in the accompanying consolidated balance sheets were ¥355 million at March 31, 2014 and not included in the table above.
	-3	MUAH reclassified residential mortgage-backed securities and commercial mortgage-backed securities, which were carried at fair value of ¥273,195 million and ¥138,340 million, respectively, from Securities available-for-sale to Securities being held-to-maturity during the fiscal year ended March 31, 2014. As a result of the reclassification, the unrealized losses before taxes at the date of reclassification remaining in Accumulated OCI in the accompanying consolidated balance sheets were ¥7,702 million and ¥9,663 million, respectively, at March 31, 2014 and not included in the table above.
Amortized Cost And Fair Value By Contractual Maturity [Table Text Block]	'
		Held-to-maturity						Available-for-sale
		Amortized			Fair value			Fair value
		cost
		(in millions)
	Due in one year or less	¥	214,084		¥	214,812		¥	15,899,122
	Due from one year to five years		77,117			77,455			21,777,591
	Due from five years to ten years		1,403,762			1,436,763			6,414,994
	Due after ten years		1,012,019			1,006,097			2,956,714
	Total	¥	2,706,982		¥	2,735,127		¥	47,048,421
Investments By Type And Length In Continuous Loss Position [Table Text Block]	'
		Less than 12 months						12 months or more					Total
	At March 31, 2013:	Fair value			Gross			Fair value			Gross		Fair value		Gross		Number of
					unrealized						unrealized				unrealized		securities
					losses						losses				losses
		(in millions, except number of securities)
	Securities available-for-sale:
	Debt securities:
	Japanese national government and Japanese government agency bonds	¥	6,859,342		¥	672		¥	584,048		¥	2,926	¥	7,443,390	¥	3,598		33
	Japanese prefectural and municipal bonds		1,486			4			—			—		1,486		4		1
	Foreign governments and official institutions bonds		157,287			2,867			11,332			155		168,619		3,022		108
	Corporate bonds		76,521			306			56,953			391		133,474		697		1,360
	Residential mortgage-backed securities		102,511			276			25,766			1,225		128,277		1,501		182
	Commercial mortgage-backed securities		58,459			530			12,134			40		70,593		570		24
	Asset-backed securities		17,239			37			85,069			3,729		102,308		3,766		131
	Other debt securities		71,217			4,898			—			—		71,217		4,898		49
	Marketable equity securities		15,143			694			870			121		16,013		815		23
	Total	¥	7,359,205		¥	10,284		¥	776,172		¥	8,587	¥	8,135,377	¥	18,871		1,911
	Securities being held-to-maturity:
	Debt securities:
	Residential mortgage-backed securities	¥	3,370		¥	11		¥	—		¥	—	¥	3,370	¥	11		10
	Total	¥	3,370		¥	11		¥	—		¥	—	¥	3,370	¥	11		10
		Less than 12 months						12 months or more					Total
	At March 31, 2014:	Fair value			Gross			Fair value			Gross		Fair value		Gross		Number of
					unrealized						unrealized				unrealized		securities
					losses						losses				losses
		(in millions, except number of securities)
	Securities available-for-sale:
	Debt securities:
	Japanese national government and Japanese government agency bonds	¥	10,469,832		¥	1,122			—			—	¥	10,469,832	¥	1,122		49
	Japanese prefectural and municipal bonds		12,555			24			—			—		12,555		24		6
	Foreign governments and official institutions bonds		527,706			9,084			110,015			5,136		637,721		14,220		150
	Corporate bonds		136,296			709			29,242			108		165,538		817		815
	Residential mortgage-backed securities		904,239			31,094			28,406			620		932,645		31,714		431
	Commercial mortgage-backed securities		135,014			8,427			8,235			943		143,249		9,370		155
	Asset-backed securities		213,683			5,518			1,078			29		214,761		5,547		103
	Other debt securities		46,835			1,203			68,630			1,996		115,465		3,199		51
	Marketable equity securities		175,884			4,692			1			18		175,885		4,710		42
	Total	¥	12,622,044		¥	61,873		¥	245,607		¥	8,850	¥	12,867,651	¥	70,723		1,802
	Securities being held-to-maturity:
	Debt securities:
	Residential mortgage-backed securities	¥	408,244		¥	7,187		¥	5,681		¥	117	¥	413,925	¥	7,304		198
	Commercial mortgage-backed securities		107,048			1,033			51,545			249		158,593		1,282		28
	Asset-backed securities		500,695			2,379			—			—		500,695		2,379		22
	Total	¥	1,015,987		¥	10,599		¥	57,226		¥	366	¥	1,073,213	¥	10,965		248
Roll-Forward Of Credit Loss Component Recognized in Earnings [Table Text Block]	'
		2012			2013			2014
		(in millions)
	Balance at beginning of fiscal year	¥	35,458		¥	30,066		¥	24,525
	Additions:
	Initial credit impairments		8,596			5,347			1,466
	Subsequent credit impairments		5,186			2,982			1,139
	Reductions:
	Securities sold or matured		(19,174	)		(13,870	)		(14,574	)
	Balance at end of fiscal year	¥	30,066		¥	24,525		¥	12,556

Loans_And_Allowance_For_Credit1

Loans And Allowance For Credit Losses [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Loans By Domicile And Industry Of Borrower Segment Classification [Table Text Block]	'
		2013			2014
		(in millions)
	Domestic:
	Manufacturing	¥	11,767,352		¥	11,540,753
	Construction		1,056,276			980,877
	Real estate		11,143,777			10,989,562
	Services		2,881,666			2,693,561
	Wholesale and retail		8,330,553			8,475,143
	Banks and other financial institutions(1)		3,622,021			3,985,106
	Communication and information services		1,314,505			1,443,466
	Other industries		12,191,566			13,496,763
	Consumer		17,132,396			16,921,352
	Total domestic		69,440,112			70,526,583
	Foreign:
	Governments and official institutions		673,548			811,475
	Banks and other financial institutions(1)		7,258,978			9,792,255
	Commercial and industrial		18,738,731			24,533,816
	Other		2,601,338			4,872,372
	Total foreign		29,272,595			40,009,918
	Unearned income, unamortized premiums—net and deferred loan fees—net		(122,478	)		(260,090	)
	Total(2)	¥	98,590,229		¥	110,276,411
	Notes:
	-1	Loans to the so-called non-bank finance companies are generally included in the “Banks and other financial institutions” category. Non-bank finance companies are primarily engaged in consumer lending, factoring and credit card businesses.
	-2	The above table includes loans held for sale of ¥35,261 million and ¥46,635 million at March 31, 2013 and 2014, respectively, which are carried at the lower of cost or estimated fair value.
Nonaccrual Status Of Loans By Class [Table Text Block]	'
		2013			2014
		(in millions)
	Commercial
	Domestic	¥	911,700		¥	737,896
	Manufacturing		211,975			167,859
	Construction		37,381			30,093
	Real estate		185,597			141,974
	Services		85,987			72,059
	Wholesale and retail		249,251			211,770
	Banks and other financial institutions		13,993			7,234
	Communication and information services		31,941			24,956
	Other industries		42,513			35,959
	Consumer		53,062			45,992
	Foreign-excluding MUAH and Krungsri		98,085			82,617
	Residential		130,830			111,252
	Card		88,045			72,483
	MUAH		43,670			46,574
	Krungsri		—			25,973
	Total(1)	¥	1,272,330		¥	1,076,795
	Note:
	-1	The above table does not include loans held for sale of ¥818 million and nil at March 31, 2013 and 2014, respectively, and loans acquired with deteriorated credit quality of ¥21,965 million and ¥38,651 million at March 31, 2013 and 2014, respectively.
Impaired Loans By Class [Table Text Block]	'
		Recorded Loan Balance
	At March 31, 2013:	Requiring			Not Requiring			Total(2)		Unpaid			Related
		an Allowance for			an Allowance for					Principal			Allowance for
		Credit Losses			Credit Losses(1)					Balance			Credit Losses
		(in millions)
	Commercial
	Domestic	¥	1,158,927		¥	318,028		¥	1,476,955	¥	1,537,180		¥	662,347
	Manufacturing		400,946			55,819			456,765		475,946			221,124
	Construction		35,581			16,921			52,502		59,411			22,577
	Real estate		139,146			100,670			239,816		247,657			55,286
	Services		122,792			37,774			160,566		166,510			67,171
	Wholesale and retail		309,892			62,274			372,166		380,292			209,634
	Banks and other financial institutions		15,201			121			15,322		17,425			8,040
	Communication and information services		40,233			12,954			53,187		55,021			23,719
	Other industries		42,991			9,794			52,785		53,754			33,485
	Consumer		52,145			21,701			73,846		81,164			21,311
	Foreign-excluding MUAH		199,890			299			200,189		200,517			122,371
	Loans acquired with deteriorated credit quality		30,927			76			31,003		47,916			9,944
	Residential		300,231			13,756			313,987		363,439			118,753
	Card		123,567			806			124,373		139,196			37,901
	MUAH		31,293			22,966			54,259		60,732			3,645
	Total(4)	¥	1,844,835		¥	355,931		¥	2,200,766	¥	2,348,980		¥	954,961
		Recorded Loan Balance
	At March 31, 2014:	Requiring			Not Requiring			Total(2)		Unpaid			Related
		an Allowance for			an Allowance for					Principal			Allowance for
		Credit Losses			Credit Losses(1)					Balance			Credit Losses
		(in millions)
	Commercial
	Domestic	¥	1,006,333		¥	257,215		¥	1,263,548	¥	1,312,320		¥	544,224
	Manufacturing		368,866			55,003			423,869		431,745			181,389
	Construction		30,537			13,298			43,835		45,323			18,731
	Real estate		141,225			63,625			204,850		212,353			52,814
	Services		101,969			27,342			129,311		139,299			54,469
	Wholesale and retail		248,932			58,633			307,565		317,614			169,523
	Banks and other financial institutions		8,295			94			8,389		8,403			6,954
	Communication and information services		25,443			11,509			36,952		39,292			16,473
	Other industries		36,821			9,634			46,455		47,866			26,903
	Consumer		44,245			18,077			62,322		70,425			16,968
	Foreign-excluding MUAH and Krungsri		193,360			2,360			195,720		195,935			96,218
	Loans acquired with deteriorated credit quality		18,787			186			18,973		32,078			6,111
	Residential		203,600			11,563			215,163		255,627			70,393
	Card		102,852			762			103,614		115,819			29,244
	MUAH		39,552			24,457			64,009		71,210			4,131
	Krungsri(3)		—			—			—		—			—
	Total(4)	¥	1,564,484		¥	296,543		¥	1,861,027	¥	1,982,989		¥	750,321
	Notes:
	-1	These loans do not require an allowance for credit losses because the fair values of the impaired loans equal or exceed the recorded investments in the loans.
	-2	Included in impaired loans at March 31, 2013 and 2014 are accrual TDRs as follows: ¥671,083 million and ¥642,408 million—Commercial; ¥ 178,576 million and ¥99,359 million—Residential; ¥61,195 million and ¥51,834 million—Card; and ¥34,769million and ¥38,666 million—MUAH, respectively.
	-3	For the Krungsri segment, acquired loans were recorded at their fair values as of the acquisition date, and there have been no indications that allowance for credit loss is necessary for these loans since then. Therefore, no impaired loans were stated in the above table.
	-4	In addition to impaired loans presented in the above table, there were loans held for sale that were impaired of ¥818 million and nil at March 31, 2013 and 2014, respectively.
Average Recorded Loan Balance And Recognized Interest Income On Impaired Loans By Class [Table Text Block]	'
		Fiscal years ended March 31,
		2012						2013					2014
		Average			Recognized			Average		Recognized			Average			Recognized
		Recorded Loan			Interest			Recorded Loan		Interest			Recorded Loan			Interest
		Balance			Income			Balance		Income			Balance			Income
		(in millions)
	Commercial
	Domestic	¥	1,270,856		¥	21,356		¥	1,414,309	¥	24,051		¥	1,359,635		¥	23,283
	Manufacturing		333,409			5,656			418,402		7,017			430,415			6,954
	Construction		63,215			1,370			54,687		1,174			47,818			982
	Real estate		173,739			2,476			198,102		2,747			228,045			3,472
	Services		176,047			3,203			170,025		3,214			140,627			2,806
	Wholesale and retail		326,440			5,239			376,001		6,215			339,619			5,857
	Banks and other financial institutions		9,812			85			11,506		162			10,719			170
	Communication and information services		55,387			1,152			51,897		1,061			44,417			945
	Other industries		57,612			927			58,081		1,271			49,612			985
	Consumer		75,195			1,248			75,608		1,190			68,363			1,112
	Foreign-excluding MUAH and Krungsri		138,900			1,016			172,471		2,487			187,656			2,848
	Loans acquired with deteriorated credit quality		35,307			1,983			32,964		2,028			30,101			1,659
	Residential		318,512			6,549			320,183		6,006			264,277			5,153
	Card		149,255			6,972			135,581		6,504			113,993			5,218
	MUAH		45,297			1,354			46,957		1,720			60,943			3,468
	Krungsri		—			—			—		—			—			—
	Total	¥	1,958,127		¥	39,230		¥	2,122,465	¥	42,796		¥	2,016,605		¥	41,629
Rollforward Of Accrual TDRs And Other Impaired Loans [Table Text Block]	'
		Fiscal years ended March 31,
		2013			2014
		(in millions)
	Accrual TDRs:
	Balance at beginning of fiscal year	¥	892,823		¥	945,623
	Additions (new accrual TDR status)		302,267			231,063
	Transfers to other impaired loans (including nonaccrual TDRs)		(56,064	)		(48,295	)
	Loans sold		(49	)		(7,698	)
	Principal payments and other		(193,354	)		(288,426	)
	Balance at end of fiscal year	¥	945,623		¥	832,267
	Other impaired loans (including nonaccrual TDRs):
	Balance at beginning of fiscal year	¥	1,139,045		¥	1,255,143
	Additions (new other impaired loans (including nonaccrual TDRs) status)(1)		500,063			313,086
	Charge-off		(46,835	)		(123,037	)
	Transfers to accrual TDRs		(28,474	)		(63,828	)
	Loans sold		(18,618	)		(39,879	)
	Principal payments and other		(290,038	)		(312,725	)
	Balance at end of fiscal year	¥	1,255,143		¥	1,028,760
	Note:
	-1	Included in additions of other impaired loans for the fiscal years ended March 31, 2013 and 2014 are nonaccrual TDRs as follows: ¥16,903 million and ¥11,054 million—Card; and ¥17,513 million and ¥16,228 million—MUAH, respectively.
Troubled Debt Restructurings By Class [Table Text Block]	'
		Fiscal year ended March 31, 2013								At March 31,
										2013
		Troubled Debt						Troubled Debt Restructurings		Troubled Debt
		Restructurings(4)						That Subsequently Defaulted		Restructurings
		Pre-			Post-			Recorded		Outstanding
		Modification			Modification			Investment		recorded
		Outstanding			Outstanding					investment
		Recorded			Recorded					balances(2)
		Investment			Investment
		(in millions)
	Commercial(1)(3)
	Domestic	¥	222,125		¥	222,125		¥	6,741	¥	567,926
	Manufacturing		131,105			131,105			2,729		247,133
	Construction		3,921			3,921			—		15,130
	Real estate		17,409			17,409			1,444		54,221
	Services		12,564			12,564			295		74,777
	Wholesale and retail		42,061			42,061			1,024		122,986
	Banks and other financial institutions		889			889			330		1,329
	Communication and information services		8,442			8,442			434		21,246
	Other industries		1,927			1,927			415		10,321
	Consumer		3,807			3,807			70		20,783
	Foreign-excluding MUAH		10,142			10,142			419		103,157
	Loans acquired with deteriorated credit quality		524			524			509		—
	Residential(1)(3)		50,005			50,005			349		178,576
	Card(2)(3)		26,409			26,055			4,507		124,373
	MUAH(2) (3)		30,091			27,832			2,155		52,848
	Total	¥	339,296		¥	336,683		¥	14,680	¥	1,026,880
	Notes:
	-1	TDRs for the Commercial and Residential segments include accruing loans with concessions granted, and do not include nonaccrual loans with concessions granted.
	-2	TDRs for the Card and MUAH segments include accrual and nonaccrual loans. Included in the outstanding recorded investment balances as of March 31, 2013 are nonaccrual TDRs as follows: ¥63,178 million—Card and ¥18,079 million—MUAH, respectively.
	-3	For the fiscal year ended March 31, 2013, extension of the stated maturity date of loans was the primary concession type in the Commercial and Residential segments, whereas reduction in the stated rate and payment deferrals were the primary concession types in the Card and MUAH segments, respectively.
	-4	From the fiscal year ended March 31, 2014, the MUFG Group started to report the amounts of TDRs which include only the first modification for those which are modified more than once during the same period, in place of the previously reported amounts which include accumulated loan modification activity, such as reduction in stated rate or extension of stated maturity date, that may occur on multiple occasions during the same period. The amounts for the fiscal year ended March 31, 2013 were revised to conform to the current year presentation and enable comparisons between the relevant amounts for the fiscal years ended March 31, 2013 and 2014, respectively.
		Fiscal year ended March 31, 2014								At March 31,
										2014
		Troubled Debt						Troubled Debt Restructurings		Troubled Debt
		Restructurings(4)						That Subsequently Defaulted		Restructurings
		Pre-			Post-			Recorded		Outstanding
		Modification			Modification			Investment		recorded
		Outstanding			Outstanding					investment
		Recorded			Recorded					balances(2)
		Investment			Investment
		(in millions)
	Commercial(1)(3)
	Domestic	¥	175,011		¥	151,505		¥	22,503	¥	528,133
	Manufacturing		93,968			70,462			11,644		257,049
	Construction		3,435			3,435			86		13,751
	Real estate		21,977			21,977			1,174		64,028
	Services		13,149			13,149			1,481		57,480
	Wholesale and retail		32,458			32,458			5,834		95,809
	Banks and other financial institutions		1			1			—		1,156
	Communication and information services		1,802			1,802			1,639		11,996
	Other industries		4,414			4,414			152		10,496
	Consumer		3,807			3,807			493		16,368
	Foreign-excluding MUAH and Krungsri		20,175			20,175			—		114,275
	Loans acquired with deteriorated credit quality		7,616			7,616			—		—
	Residential(1)(3)		32,777			32,777			474		99,359
	Card(2)(3)		17,141			16,869			4,015		103,614
	MUAH(2)(3)		29,945			29,403			2,912		62,363
	Krungsri(2)		—			—			—		—
	Total	¥	282,665		¥	258,345		¥	29,904	¥	907,744
	Notes:
	-1	TDRs for the Commercial and Residential segments include accruing loans with concessions granted, and do not include nonaccrual loans with concessions granted.
	-2	TDRs for the Card, MUAH and Krungsri segments include accrual and nonaccrual loans. Included in the outstanding recorded investment balances as of March 31, 2014 are nonaccrual TDRs as follows: ¥51,780 million—Card and ¥23,697 million—MUAH, respectively.
-3	For the fiscal year ended March 31, 2014, extension of the stated maturity date of loans was the primary concession type in the Commercial and Residential segments, whereas reduction in the stated rate and payment deferrals were the primary concession types in the Card and MUAH segments, respectively.
-4	From the fiscal year ended March 31, 2014, the MUFG Group started to report the amounts of TDRs which include only the first modification for those which are modified more than once during the same period, in place of the previously reported amounts which include accumulated loan modification activity, such as reduction in stated rate or extension of stated maturity date, that may occur on multiple occasions during the same period.
Credit Quality Indicators Of Loans By Class [Table Text Block]	'
	At March 31, 2013:	Normal			Close			Likely to become		Total(1)
					Watch			Bankrupt or
								Legally/Virtually
								Bankrupt
		(in millions)
	Commercial
	Domestic	¥	48,099,471		¥	4,476,760		¥	911,868	¥	53,488,099
	Manufacturing		10,062,399			1,481,403			211,975		11,755,777
	Construction		797,513			220,465			37,381		1,055,359
	Real estate		9,570,082			898,619			185,678		10,654,379
	Services		2,417,737			362,719			85,987		2,866,443
	Wholesale and retail		7,297,267			747,938			249,253		8,294,458
	Banks and other financial institutions		3,239,735			367,189			13,993		3,620,917
	Communication and information services		1,183,208			98,722			31,941		1,313,871
	Other industries		11,951,463			192,291			42,592		12,186,346
	Consumer		1,580,067			107,414			53,068		1,740,549
	Foreign-excluding MUAH		22,340,927			1,530,191			89,832		23,960,950
	Loans acquired with deteriorated credit quality		30,972			52,007			18,334		101,313
	Total	¥	70,471,370		¥	6,058,958		¥	1,020,034	¥	77,550,362
		Accrual			Nonaccrual			Total(1)
		(in millions)
	Residential	¥	15,067,823		¥	133,410		¥	15,201,233
	Card	¥	582,510		¥	89,095		¥	671,605
		Credit Quality Based on						Credit Quality Based on
		the Number of Delinquencies						Internal Credit Ratings
		Accrual			Nonaccrual			Pass		Special			Classified			Total(1)(2)
										Mention
		(in millions)
	MUAH	¥	2,260,777		¥	31,342		¥	2,745,365	¥	69,437		¥	80,433		¥	5,187,354
	At March 31, 2014:	Normal			Close Watch			Likely to become		Total(1)
								Bankrupt or
								Legally/Virtually
								Bankrupt
		(in millions)
	Commercial
	Domestic	¥	50,608,911		¥	3,549,135		¥	737,692	¥	54,895,738
	Manufacturing		10,032,892			1,329,356			167,859		11,530,107
	Construction		786,640			163,313			30,093		980,046
	Real estate		9,747,076			716,302			141,774		10,605,152
	Services		2,279,379			328,142			72,059		2,679,580
	Wholesale and retail		7,582,548			651,659			211,770		8,445,977
	Banks and other financial institutions		3,959,266			18,494			7,234		3,984,994
	Communication and information services		1,349,217			68,863			24,956		1,443,036
	Other industries		13,274,021			182,727			36,054		13,492,802
	Consumer		1,597,872			90,279			45,893		1,734,044
	Foreign-excluding MUAH and Krungsri		28,399,163			1,132,038			84,849		29,616,050
	Loans acquired with deteriorated credit quality		32,430			33,100			10,210		75,740
	Total	¥	79,040,504		¥	4,714,273		¥	832,751	¥	84,587,528
		Accrual			Nonaccrual			Total(1)
		(in millions)
	Residential	¥	14,864,856		¥	113,449		¥	14,978,305
	Card	¥	535,511		¥	73,110		¥	608,621
		Credit Quality Based on						Credit Quality Based on
		the Number of Delinquencies						Internal Credit Ratings
		Accrual			Nonaccrual			Pass		Special			Classified			Total(1)(2)
										Mention
		(in millions)
	MUAH	¥	3,003,826		¥	34,989		¥	3,946,961	¥	98,645		¥	95,167		¥	7,179,588
		Normal		Special	Substandard or		Total(1)
				Mention	Doubtful or
					Doubtful
					of Loss
		(in millions)
Krungsri	¥2,923,087		¥101,184	¥51,590		¥3,075,861
Notes:
-1	Total loans in the above table do not include loans held for sale.
-2	Total loans of MUAH do not include Federal Deposit Insurance Corporation (“FDIC”) covered loans and small business loans which are not individually rated totaling ¥66,892 million and ¥59,963 million as of March 31, 2013 and 2014, respectively. The MUFG Group will be reimbursed for a substantial portion of any future losses on FDIC covered loans under the terms of the FDIC loss share agreements.
Ages Of Past Due Loans By Class [Table Text Block]	'
	At March 31, 2013:	1-3 months			Greater			Total		Current			Total			Recorded
		Past Due			Than			Past Due					Loans(1)(2)			Investment>
					3 months											90 Days and
																Accruing
		(in millions)
	Commercial
	Domestic	¥	45,915		¥	84,823		¥	130,738	¥	53,357,361		¥	53,488,099		¥	7,545
	Manufacturing		6,963			15,307			22,270		11,733,507			11,755,777			24
	Construction		2,118			1,881			3,999		1,051,360			1,055,359			37
	Real estate		5,339			15,071			20,410		10,633,969			10,654,379			2,255
	Services		12,215			7,537			19,752		2,846,691			2,866,443			80
	Wholesale and retail		10,106			24,050			34,156		8,260,302			8,294,458			82
	Banks and other financial institutions		—			72			72		3,620,845			3,620,917			2
	Communication and information services		2,286			2,835			5,121		1,308,750			1,313,871			12
	Other industries		1,592			6,809			8,401		12,177,945			12,186,346			11
	Consumer		5,296			11,261			16,557		1,723,992			1,740,549			5,042
	Foreign-excluding MUAH		19,806			17,686			37,492		23,923,458			23,960,950			206
	Residential		91,148			55,132			146,280		15,037,723			15,184,003			32,918
	Card		23,680			39,796			63,476		594,896			658,372			—
	MUAH		30,736			17,922			48,658		5,102,991			5,151,649			69
	Total	¥	211,285		¥	215,359		¥	426,644	¥	98,016,429		¥	98,443,073		¥	40,738
	At March 31, 2014:	1-3 months			Greater			Total		Current			Total			Recorded
		Past Due			Than			Past Due					Loans(1)(2)			Investment>
					3 months											90 Days and
																Accruing
		(in millions)
	Commercial
	Domestic	¥	26,210		¥	53,632		¥	79,842	¥	54,815,896		¥	54,895,738		¥	6,543
	Manufacturing		5,363			7,192			12,555		11,517,552			11,530,107			—
	Construction		718			664			1,382		978,664			980,046			1
	Real estate		4,859			9,689			14,548		10,590,604			10,605,152			2,233
	Services		4,315			2,781			7,096		2,672,484			2,679,580			10
	Wholesale and retail		4,624			22,829			27,453		8,418,524			8,445,977			3
	Banks and other financial institutions		1			52			53		3,984,941			3,984,994			—
	Communication and information services		680			1,371			2,051		1,440,985			1,443,036			—
	Other industries		667			1,554			2,221		13,490,581			13,492,802			—
	Consumer		4,983			7,500			12,483		1,721,561			1,734,044			4,296
	Foreign-excluding MUAH and Krungsri		3,283			7,109			10,392		29,605,658			29,616,050			357
	Residential		85,549			54,462			140,011		14,822,995			14,963,006			40,500
	Card		21,653			33,381			55,034		540,886			595,920			—
	MUAH		30,036			14,333			44,369		7,078,621			7,122,990			527
	Krungsri		66,871			22,121			88,992		2,936,194			3,025,186			—
	Total	¥	233,602		¥	185,038		¥	418,640	¥	109,800,250		¥	110,218,890		¥	47,927
	Notes:
	-1	Total loans in the above table do not include loans held for sale and loans acquired with deteriorated credit quality.
	-2	Total loans of MUAH do not include ¥2,039 million and ¥1,600 million of FDIC covered loans at March 31, 2013 and 2014, respectively, which are not subject to the guidance on loans and debt securities acquired with deteriorated credit quality.
Changes In Allowance For Credit Losses By Portfolio Segment [Table Text Block]	'
	Fiscal year ended March 31, 2012:	Commercial			Residential			Card		MUAH			Total
		(in millions)
	Allowance for credit losses:
	Balance at beginning of fiscal year:	¥	895,611		¥	165,215		¥	82,607	¥	97,023		¥	1,240,456
	Provision (credit) for credit losses		181,449			29,481			27,883		(15,004	)		223,809
	Charge-offs		126,157			23,075			43,073		24,494			216,799
	Recoveries		36,043			216			1,486		5,684			43,429
	Net charge-offs		90,114			22,859			41,587		18,810			173,370
	Others(1)		(2,638	)		—			—		(2,750	)		(5,388	)
	Balance at end of fiscal year	¥	984,308		¥	171,837		¥	68,903	¥	60,459		¥	1,285,507
	Fiscal year ended March 31, 2013:	Commercial			Residential			Card		MUAH			Total
		(in millions)
	Allowance for credit losses:
	Balance at beginning of fiscal year:	¥	984,308		¥	171,837		¥	68,903	¥	60,459		¥	1,285,507
	Provision for credit losses		127,874			1,302			12,379		2,987			144,542
	Charge-offs		80,534			16,283			32,135		15,585			144,537
	Recoveries		23,410			353			2,723		5,189			31,675
	Net charge-offs		57,124			15,930			29,412		10,396			112,862
	Others(1)		13,405			—			—		5,395			18,800
	Balance at end of fiscal year	¥	1,068,463		¥	157,209		¥	51,870	¥	58,445		¥	1,335,987
	Fiscal year ended March 31, 2014:	Commercial			Residential			Card		MUAH			Krungsri(2)			Total
		(in millions)
	Allowance for credit losses:
	Balance at beginning of fiscal year:	¥	1,068,463		¥	157,209		¥	51,870	¥	58,445		¥	—		¥	1,335,987
	Provision (credit) for credit losses		(70,091	)		(35,952	)		5,617		(5,945	)		—			(106,371	)
	Charge-offs		158,875			4,577			20,125		7,521			—			191,098
	Recoveries		29,478			230			3,264		4,378			—			37,350
	Net charge-offs		129,397			4,347			16,861		3,143			—			153,748
	Others(1)		7,882			3			—		10,667			—			18,552
	Balance at end of fiscal year	¥	876,857		¥	116,913		¥	40,626	¥	60,024		¥	—		¥	1,094,420
	Notes:
	-1	Others are principally comprised of gains or losses from foreign exchange translation.
	-2	For the Krungsri segment, the acquired loans were recorded at their fair values as of the acquisition date, and there have been no indications that allowance for credit loss is necessary for these loans since then. Therefore, no allowance for credit loss was stated in the above table.
Allowance For Credit Losses And Recorded Investment In Loans By Portfolio Segment [Table Text Block]	'
	At March 31, 2013:	Commercial			Residential			Card		MUAH			Total
		(in millions)
	Allowance for credit losses:
	Individually evaluated for impairment	¥	784,718		¥	117,670		¥	37,901	¥	3,645		¥	943,934
	Collectively evaluated for impairment		248,798			37,360			13,809		54,705			354,672
	Loans acquired with deteriorated credit quality		34,947			2,179			160		95			37,381
	Total	¥	1,068,463		¥	157,209		¥	51,870	¥	58,445		¥	1,335,987
	Loans:
	Individually evaluated for impairment	¥	1,677,144		¥	309,408		¥	123,519	¥	54,259		¥	2,164,330
	Collectively evaluated for impairment		75,771,905			14,874,595			534,853		5,099,429			96,280,782
	Loans acquired with deteriorated credit quality		101,313			17,230			13,233		100,558			232,334
	Total(1)	¥	77,550,362		¥	15,201,233		¥	671,605	¥	5,254,246		¥	98,677,446
	At March 31, 2014:	Commercial			Residential			Card		MUAH			Krungsri(2)			Total
		(in millions)
	Allowance for credit losses:
	Individually evaluated for impairment	¥	640,442		¥	69,613		¥	29,244	¥	4,131		¥	—		¥	743,430
	Collectively evaluated for impairment		209,117			45,355			11,312		55,777			—			321,561
	Loans acquired with deteriorated credit quality		27,298			1,945			70		116			—			29,429
	Total	¥	876,857		¥	116,913		¥	40,626	¥	60,024		¥	—		¥	1,094,420
	Loans:
	Individually evaluated for impairment	¥	1,459,268		¥	211,802		¥	102,930	¥	64,009		¥	—		¥	1,838,009
	Collectively evaluated for impairment		83,052,520			14,751,204			492,990		7,060,581			3,025,186			108,382,481
	Loans acquired with deteriorated credit quality		75,740			15,299			12,701		114,961			50,675			269,376
	Total(1)	¥	84,587,528		¥	14,978,305		¥	608,621	¥	7,239,551		¥	3,075,861		¥	110,489,866
	Notes:
	-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.
	-2	For the Krungsri segment, acquired loans were recorded at their fair values as of the acquisition date, and there have been no indications that allowance for credit loss is necessary for these loans since then. Therefore, no allowance for credit loss was stated in the above table.
Loans Acquired With Deteriorated Credit Quality [Table Text Block]	'
		2013			2014
		(in millions)
	Loans acquired during the fiscal year:
	Contractually required payments receivable at acquisitions	¥	117,468		¥	186,268
	Cash flows expected to be collected at acquisitions		77,417			116,218
	Fair value of loans at acquisition		63,731			93,845
	Accretable yield for loans within the scope of the guidance on loans and debt securities acquired with deteriorated credit quality:
	Balance at beginning of fiscal year	¥	86,877		¥	95,178
	Additions		13,686			22,373
	Accretion		(39,981	)		(49,155	)
	Disposals		—			—
	Reclassifications from nonaccretable difference		29,721			15,760
	Foreign currency translation adjustments		4,875			9,465
	Balance at end of fiscal year	¥	95,178		¥	93,621
	Loans within the scope of the guidance on loans and debt securities acquired with deteriorated credit quality:
	Outstanding balance at beginning of fiscal year	¥	493,111		¥	497,265
	Outstanding balance at end of fiscal year		497,265			531,327
	Carrying amount at beginning of fiscal year		212,702			232,334
	Carrying amount at end of fiscal year		232,334			269,376
	Nonaccruing loans within the scope of the guidance on loans and debt securities acquired with deteriorated credit quality:
	Carrying amount at acquisition date during fiscal year	¥	826		¥	25,952
	Carrying amount at end of fiscal year		21,965			38,651
	Allowance for credit losses within the scope of the guidance on loans and debt securities acquired with deteriorated credit quality:
	Balance of allowance for credit losses at beginning of fiscal year	¥	36,391		¥	37,381
	Additional provisions during fiscal year		5,784			4,982
	Reductions of allowance during fiscal year		2,066			1,129
	Balance of allowance for credit losses at end of fiscal year		37,381			29,429
Components Of Investment In Direct Financing Leases [Table Text Block]	'
		2013			2014
		(in millions)
	Minimum lease payments receivable	¥	677,959		¥	1,498,755
	Estimated residual values of leased property		22,384			18,261
	Less—unearned income		(69,196	)		(202,755	)
	Net investment in direct financing leases	¥	631,147		¥	1,314,261
Future Minimum Lease Payment Receivables Under Noncancelable Leasing Agreements [Table Text Block]	'
		Direct
		Financing
		Leases
		(in millions)
	Fiscal year ending March 31:
	2015	¥	440,086
	2016		337,044
	2017		267,306
	2018		191,112
	2019		106,385
	2020 and thereafter		156,822
	Total minimum lease payment receivables	¥	1,498,755

Premises_And_Equipment_Text_Bl1

Premises And Equipment [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Components Of Premises And Equipment [Table Text Block]	'
		2013		2014
		(in millions)
	Land	¥	379,943	¥	403,184
	Buildings		723,902		747,998
	Equipment and furniture		767,733		929,939
	Leasehold improvements		236,353		251,875
	Construction in progress		17,976		27,606
	Total		2,125,907		2,360,602
	Less accumulated depreciation		1,066,853		1,123,954
	Premises and equipment-net	¥	1,059,054	¥	1,236,648

Goodwill_And_Other_Intangible_1

Goodwill And Other Intangible Assets [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Carrying Amount Of Goodwill By Business Segment [Table Text Block]	'
		Integrated			Integrated			Integrated			Integrated Global Business								Krungsri		Global		Total
		Retail			Corporate			Trust			Group										Markets
		Banking			Banking			Assets
		Business			Business			Business
		Group			Group			Group			Other than			MUAH		Total
											MUAH
		(in millions)
	Balance at March 31, 2012:
	Goodwill	¥	840,055		¥	885,234		¥	22,527		¥	152,203		¥	192,520	¥	344,723		¥	—	¥	2,300	¥	2,094,839
	Accumulated impairment losses		(840,055	)		(885,234	)		(14,735	)		(532	)		—		(532	)		—		—		(1,740,556	)
			—			—			7,792			151,671			192,520		344,191					2,300		354,283
	Goodwill acquired during the		—			—			—			—			39,683		39,683			—		—		39,683
	fiscal year(2)
	Foreign currency translation adjustments and other		—			—			—			—			23,990		23,990			—		—		23,990
	Balance at March 31, 2013:
	Goodwill		840,055			885,234			22,527			152,203			256,193		408,396			—		2,300		2,158,512
	Accumulated impairment losses		(840,055	)		(885,234	)		(14,735	)		(532	)		—		(532	)		—		—		(1,740,556	)
			—			—			7,792			151,671			256,193		407,864			—		2,300		417,956
	Goodwill acquired during the		—			—			14,443			—			26,181		26,181			217,386		—		258,010
	fiscal year(2)
	Impairment loss		—			—			(7,792	)		—			—		—			—		—		(7,792	)
	Foreign currency translation adjustments and other		—			—			825			—			59,516		59,516			—		—		60,341
	Balance at March 31, 2014:
	Goodwill		840,055			885,234			37,795			152,203			341,890		494,093			217,386		2,300		2,476,863
	Accumulated impairment losses		(840,055	)		(885,234	)		(22,527	)		(532	)		—		(532	)		—		—		(1,748,348	)
		¥	—		¥	—		¥	15,268		¥	151,671		¥	341,890	¥	493,561		¥	217,386	¥	2,300	¥	728,515
	Notes:
	-1	See Note 29 for the business segment information of the MUFG Group.
	-2	See Note 2 for the goodwill acquired in connection with principal acquisitions.
Carrying Amount Of Other Intangible Assets By Major Class [Table Text Block]	'
		2013									2014
		Gross			Accumulated			Net			Gross			Accumulated		Net
		carrying			amortization			carrying			carrying			amortization		carrying
		amount						amount			amount					amount
		(in millions)
	Intangible assets subject to amortization:
	Software	¥	1,640,297		¥	1,105,783		¥	534,514			¥1,858,371			¥1,245,657		¥612,714
	Core deposit intangibles		638,863			456,339			182,524			712,188			497,219		214,969
	Customer relationships		233,360			136,603			96,757			380,674			147,774		232,900
	Trade names		52,562			14,430			38,132			72,788			16,995		55,793
	Other		4,899			2,744			2,155			8,754			2,562		6,192
	Total	¥	2,569,981		¥	1,715,899			854,082			¥3,032,775			¥1,910,207		1,122,568
	Intangible assets not subject to amortization:
	Indefinite-lived trade names								3,037								3,037
	Other								9,034								7,749
	Total								12,071								10,786
	Total							¥	866,153								¥1,133,354
Estimated Aggregate Amortization Expense For Intangible Assets For Next Five Fiscal Years [Table Text Block]	'
		(in millions)
	Fiscal year ending March 31:
	2015	¥	231,427
	2016		198,788
	2017		170,098
	2018		135,245
	2019		95,218

Income_Taxes_Text_Block_Tables

Income Taxes [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Income (Loss) Before Income Tax Expense (Benefit) By Jurisdiction [Table Text Block]	'
		2012			2013			2014
		(in millions)
	Domestic income	¥	1,037,891		¥	898,596		¥	1,012,551
	Foreign income (loss)		(187,949	)(1)		517,275			407,892
	Total	¥	849,942		¥	1,415,871		¥	1,420,443
	Note:
	-1	An other-than-temporary impairment loss of Morgan Stanley’s common stock was included in Foreign income (loss). See Note 2 for further details of an other-than-temporary impairment loss of Morgan Stanley’s common stock.
Details Of Current And Deferred Income Tax Expense (Benefit) [Table Text Block]	'
		2012			2013			2014
		(in millions)
	Current:
	Domestic	¥	156,764		¥	102,357		¥	243,648
	Foreign		79,313			60,609			102,316
	Total		236,077			162,966			345,964
	Deferred:
	Domestic		171,889			122,804			(5,523	)
	Foreign		21,225			10,250			(2,524	)
	Total		193,114			133,054			(8,047	)
	Income tax expense		429,191			296,020			337,917
	Income tax expense (benefit) reported in Accumulated OCI relating to:
	Investment securities		116,997			336,531			96,422
	Derivatives qualifying for cash flow hedges		235			2,217			(235	)
	Defined benefit plans		(66,573	)		43,213			69,515
	Foreign currency translation adjustments		13,230			18,537			51,414
	Total		63,889			400,498			217,116
	Total	¥	493,080		¥	696,518		¥	555,033
Reconciliation Of Effective Income Tax Rate [Table Text Block]	'
		2012			2013			2014
	Combined normal effective statutory tax rate		40.6	%		38	%		38	%
	Nondeductible expenses		0.2			0.1			0.2
	Dividends from foreign subsidiaries		0.1			0			0
	Foreign tax credit and payments		(2.1	)		(0.8	)		(0.6	)
	Lower tax rates applicable to income of subsidiaries		(0.5	)		(0.5	)		(0.4	)
	Change in valuation allowance		2.3			(7.3	)		(12.4	)
	Realization of previously unrecognized tax effects of subsidiaries		0			(10.7	)(1)		(0.1	)
	Nontaxable dividends received		(3.4	)		(2.3	)		(3.3	)
	Undistributed earnings of subsidiaries		0.2			1.5			0.5
	Tax and interest expense for uncertainty in income taxes		0.1			(0.1	)		—
	Expiration of loss carryforward		4.8			2.1			—
	Effect of changes in tax laws		9.1			—			1.2
	Other—net		(0.9	)		0.9			0.7
	Effective income tax rate		50.5	%		20.9	%		23.8	%
	Note:
	-1	In April 2012, one of the wholly-owned subsidiaries of BTMU was liquidated. The liquidation resulted in the realization of tax benefits that were not previously recognized as deferred tax assets, resulting in a ¥151,309 million reduction of income tax expense and a 10.7% reduction in the effective tax rate for the fiscal year ended March 31, 2013.
Components Of Net Deferred Tax Assets [Table Text Block]	'
		2013			2014
		(in millions)
	Deferred tax assets:
	Allowance for credit losses	¥	774,612		¥	650,069
	Operating loss carryforwards		106,856			102,260
	Loans		14,360			7,632
	Accrued liabilities and other		355,337			309,327
	Premises and equipment, including sale-and-leaseback transactions		102,217			94,652
	Derivative financial instruments		64,583			94,514
	Accrued severance indemnities and pension plans		164,797			44,810
	Valuation allowance		(483,006	)		(308,561	)
	Total deferred tax assets		1,099,756			994,703
	Deferred tax liabilities:
	Investment securities (including trading account assets at fair value under fair value option)		488,728			574,807
	Intangible assets		104,736			159,330
	Lease transactions		54,025			77,542
	Other		64,806			74,471
	Total deferred tax liabilities		712,295			886,150
	Net deferred tax assets	¥	387,461		¥	108,553
Operating Loss Carryforwards And Tax Credit Carryforwards [Table Text Block]	'
		Operating loss			Tax credit
		carryforwards			carryforwards
		(in millions)
	Fiscal year ending March 31:
	2015	¥	1,808		¥	579
	2016		—			47
	2017		—			27
	2018		31,619			52
	2019		6,412			56
	2020		34,370			96
	2021 and thereafter		216,288			3,900
	No definite expiration date		11,536			1,685
	Total	¥	302,033		¥	6,442
Roll-Forward Of Unrecognized Tax Benefits [Table Text Block]	'
		2012			2013			2014
		(in millions)
	Balance at beginning of fiscal year	¥	61,297		¥	58,588		¥	30,956
	Gross amount of increases for current year’s tax positions		455			366			439
	Gross amount of decreases for current year’s tax positions		(339	)		(49	)		—
	Gross amount of increases for prior years’ tax positions		2,887			2,765			333
	Gross amount of decreases for prior years’ tax positions		(312	)		(35,119	)(1)		(25,318	)(2)
	Net amount of changes relating to settlements with tax authorities		(2,515	)		760			(244	)
	Decreases due to lapse of applicable statutes of limitations		(1,123	)		—			—
	Foreign exchange translation and others		(1,762	)		3,645			7,827
	Balance at end of fiscal year	¥	58,588		¥	30,956		¥	13,993
	Notes:
	-1	The decrease was primarily because, during the fiscal year ended March 31, 2013, the MUFG Group closed an examination with U.S. tax authorities on issues related to prior years’ tax positions.
	-2	The decrease related to prior year tax positions is primarily from the resolution of uncertain tax positions in the U.S. for both federal income taxes and California state tax.
Roll-Forward Of Interest And Penalties Recognized [Table Text Block]	'
		2012			2013			2014
		(in millions)
	Balance at beginning of fiscal year	¥	7,033		¥	6,934		¥	4,528
	Total interest and penalties in the consolidated statements of income		27			(2,975	)		(698	)
	Total cash settlements, foreign exchange translation and others		(126	)		569			2,116
	Balance at end of fiscal year	¥	6,934		¥	4,528		¥	5,946
Status Of Years Under Audit Or Open To Examination By Major Tax Jurisdiction [Table Text Block]	'
	Jurisdiction	Tax years
	Japan	2013 and forward
	United States—Federal	2007 and forward
	United States—California	2009 and forward
	Thailand	2009 and forward

Pledged_Assets_And_Collateral_1

Pledged Assets And Collateral [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Assets Mortgaged Pledged Or Otherwise Subject To Lien [Table Text Block]	'
		2014
		(in millions)
	Trading account securities	¥	13,654,793
	Investment securities		4,728,870
	Loans		8,087,278
	Other		84,291
	Total	¥	26,555,232
Pledged Assets Classified By Type Of Liabilities [Table Text Block]	'
		2014
		(in millions)
	Deposits	¥	552,503
	Call money and funds purchased		708,086
	Payables under repurchase agreements and securities lending transactions		15,436,764
	Other short-term borrowings and long-term debt		9,657,563
	Other		200,316
	Total	¥	26,555,232

Deposits_Text_Block_Tables

Deposits [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Time Deposits By Maturity [Table Text Block]	'
		Domestic		Foreign
		(in millions)
	Due in one year or less	¥	35,654,357	¥	25,819,867
	Due after one year through two years		6,307,843		421,138
	Due after two years through three years		2,813,975		145,802
	Due after three years through four years		611,214		121,113
	Due after four years through five years		807,890		130,491
	Due after five years		464,856		23,225
	Total	¥	46,660,135	¥	26,661,636

Call_Money_And_Funds_Purchased1

Call Money And Funds Purchased [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Summary Of Funds Transactions [Table Text Block]	'
		2013			2014
		(in millions, except percentages and days)
	Outstanding at end of fiscal year:
	Amount	¥	4,010,582		¥	3,417,455
	Principal range of maturities		1 day to 30 days			1 day to 30 days
	Weighted average interest rate		0.18	%		0.18	%

Due_To_Trust_Account_Text_Bloc1

Due To Trust Account [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Summary Of Due To Trust Account Transactions [Table Text Block]	'
		2013			2014
		(in millions, except percentages)
	Amount outstanding at end of fiscal year	¥	633,029		¥	750,210
	Weighted average interest rate on outstanding balance at end of fiscal year		0.09	%		0.08	%

ShortTerm_Borrowings_And_LongT1

Short-Term Borrowings And Long-Term Debt [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Components Of Other Short-Term Borrowings [Table Text Block]	'
		2013			2014
		(in millions, except percentages)
	Domestic offices:
	Commercial paper	¥	1,358,067		¥	1,235,525
	Borrowings from the Bank of Japan		7,466,717			5,888,541
	Borrowings from other financial institutions		203,120			224,676
	Other		49,500			59,501
	Total domestic offices		9,077,404			7,408,243
	Foreign offices:
	Commercial paper		2,125,851			3,091,977
	Borrowings from other financial institutions		386,068			333,116
	Short-term debentures		—			119,837
	Other		19,389			153,074
	Total foreign offices		2,531,308			3,698,004
	Total		11,608,712			11,106,247
	Less unamortized discount		114			176
	Other short-term borrowings—net	¥	11,608,598		¥	11,106,071
	Weighted average interest rate on outstanding balance at end of fiscal year		0.2	%		0.25	%
Components Of Long-Term Debt [Table Text Block]	'
		2013			2014
		(in millions)
	MUFG:
	Obligations under capital leases	¥	59		¥	78
	Subordinated debt(1):
	Adjustable rate bonds, payable in Japanese yen, no stated maturity, principally 3.92%-4.42%		380,500			380,500
	Adjustable rate borrowings, payable in Japanese yen, no stated maturity, principally 3.42%-4.78%		1,500			1,500
	Adjustable rate borrowings, payable in US dollars, no stated maturity, principally 6.25%		470			515
	Adjustable rate borrowings, payable in Euro, no stated maturity, principally 4.75%-5.17%		1,207			1,416
	Adjustable rate borrowings, payable in other currencies excluding Japanese yen, US dollars, Euro, no stated maturity, principally 6.20%(2)		430			514
	Total		384,166			384,523
	BTMU:
	Obligations under capital leases	¥	15,294		¥	12,260
	Obligation under sale-and-leaseback transactions		47,435			46,339
	Unsubordinated debt(1):
	Fixed rate bonds, payable in Japanese yen, due 2014-2027, principally 0.16%-2.69%		1,337,900			1,311,801
	Fixed rate bonds, payable in US dollars, due 2015-2044, principally 1.00%-4.70%		639,679			1,109,470
	Fixed rate bonds, payable in other currencies excluding Japanese yen, US dollars, due 2014-2017, principally 4.05%-4.91%(2)		126,709			71,439
	Fixed rate borrowings, payable in Japanese yen, due 2014-2028, principally 0.10%-0.50%		10,297			1,163,291
	Fixed rate borrowings, payable in US dollars, due 2018, principally 7.49%		383			342
	Fixed rate borrowings, payable in other currencies excluding Japanese yen, US dollars, due 2013-2014, principally 2.13%-5.65%(2)		384			—
	Adjustable rate bonds, payable in Japanese yen, due 2014, principally 1.57%		20,000			—
	Floating rate bonds, payable in US dollars, due 2016-2017, principally 0.65%-0.85%		93,667			226,424
	Floating rate bonds, payable in other currencies excluding Japanese yen, US dollars, due 2015-2017, principally 3.77%-4.00%(2)		29,379			90,431
	Floating rate borrowings, payable in US dollars, due 2014-2024, principally 0.33%-0.67%		780,410			942,215
	Floating rate borrowings, payable in Euro, due 2014-2021, principally 0.45%-0.48%(2)		7,839			7,497
	Total		3,046,647			4,922,910
	Subordinated debt(1):
	Fixed rate bonds, payable in Japanese yen, due 2014-2031, principally 0.93%-2.91%		1,579,037			1,336,892
	Fixed rate borrowings, payable in Japanese yen, due 2016-2035, principally 0.56%-2.24%		233,419			233,400
	Fixed rate borrowings, payable in US dollars, due 2013, principally 6.76%		118,177			—
	Adjustable rate bonds, payable in Japanese yen, due 2019, principally 1.20%		93,700			31,000
	Adjustable rate borrowings, payable in Japanese yen, due 2017-2028, principally 0.25%-2.86%		395,600			245,800
	Adjustable rate borrowings, payable in Japanese yen, no stated maturity, principally 0.97%-4.78%		891,199			845,400
	Adjustable rate borrowings, payable in US dollars, no stated maturity, principally 6.25%		221,018			241,862
	Adjustable rate borrowings, payable in Euro, no stated maturity, principally 4.75%-5.17%		158,760			186,270
	Adjustable rate borrowings, payable in other currencies excluding Japanese yen, US dollars, Euro, no stated maturity, principally 6.20%(2)		80,885			96,790
	Floating rate borrowings, payable in Japanese yen, due 2020-2027, principally 0.36%-0.86%		41,900			41,900
	Total		3,813,695			3,259,314
	Obligations under loan securitization transaction accounted for as secured borrowings due 2014-2044, principally 0.24%-5.90%		1,516,893			1,146,638
	Payable under repurchase agreements due 2016-2018, principally 0.63%-1.48%		188,100			360,220
	Total		8,628,064			9,747,681
	Other subsidiaries:
	Obligations under capital leases	¥	10,286		¥	7,781
	Unsubordinated debt(1):
	Fixed rate borrowings, bonds and notes, payable in Japanese yen, due 2014-2044, principally 0.00%-16.00%		547,746			915,357
	Fixed rate borrowings, bonds and notes, payable in US dollars, due 2014-2038, principally 0.00%-13.10%		46,849			396,704
	Fixed rate bonds and notes, payable in Euro, due 2018, principally 4.21%		—			6,514
	Fixed rate bonds and notes, payable in Thai baht, due 2014-2018, principally 0.00%-4.80%		1,437			269,219
	Fixed rate borrowings, bonds and notes, payable in other currencies excluding Japanese yen, US dollars, Euro, Thai baht, due 2014-2037, principally 0.50%-10.75%(2)		8,952			35,011
	Floating/Adjustable rate borrowings, bonds and notes, payable in Japanese yen, due 2014-2044, principally 0.00%-24.00%		1,199,685			1,426,933
	Floating/Adjustable rate borrowings, bonds and notes, payable in US dollars, due 2014-2038, principally 0.00%-7.30%		403,809			276,402
	Floating rate bonds and notes, payable in Euro, due 2014-2018, principally 0.00%-1.76%		22,492			34,281
	Floating rate borrowings, bonds and notes, payable in other currencies excluding Japanese yen, US dollars, Euro, due 2014-2037, principally 0.00%-1.10%(2)		2,006			2,055
	Total		2,232,976			3,362,476
	Subordinated debt(1):
	Fixed rate borrowings, bonds and notes, payable in Japanese yen, due 2014-2030, principally 0.56%-2.98%		435,544			484,194
	Fixed rate bonds and notes, payable in US dollars, due 2014-2019, principally 5.38%-11.33%		105,096			77,330
	Fixed rate bonds and notes, payable in Thai baht, due 2020-2022, principally 4.51%-4.70%		—			111,682
	Adjustable rate borrowings, bonds and notes, payable in Japanese yen, due 2020, principally 1.76%		72,300			5,000
	Adjustable rate borrowings, bonds and notes, payable in Japanese yen, no stated maturity, principally 1.93%-3.50%		105,744			105,667
	Floating rate borrowings, bonds and notes, payable in Japanese yen, due 2014-2021, principally 0.57%-1.52%		192,391			204,926
	Floating rate borrowings, bonds and notes, payable in US dollars, due 2033-2036, principally 1.95%-3.50%		—			6,972
Total		911,075			995,771
Obligations under loan securitization transaction accounted for as secured borrowings due 2014-2018, principally 0.95%-2.71%		15,791			446
Total		3,170,128			4,366,474
Total	¥	12,182,358		¥	14,498,678
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, British pound, Indonesian rupiah, Brazilian real, Russian ruble etc, have been summarized into the “Other currencies” classification.
Summary Of Subsequent Maturities Of Long-Term Debt [Table Text Block]	'
		MUFG			BTMU			Other		Total
								subsidiaries
		(in millions)
	Fiscal year ending March 31:
	2015	¥	20		¥	1,111,236		¥	575,174	¥	1,686,430
	2016		18			931,103			646,907		1,578,028
	2017		13			2,295,298			585,917		2,881,228
	2018		6			891,232			353,487		1,244,725
	2019		3			529,641			544,859		1,074,503
	2020 and thereafter		384,463			3,989,171			1,660,130		6,033,764
	Total	¥	384,523		¥	9,747,681		¥	4,366,474	¥	14,498,678

Severance_Indemnities_And_Pens1

Severance Indemnities And Pension Plans [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Components Of Net Periodic Costs Of Pension Benefits And Other Benefits [Table Text Block]	'
		Domestic subsidiaries									Foreign offices and subsidiaries
		2012			2013			2014			2012						2013						2014
		Pension			Pension			Pension			Pension			Other			Pension			Other			Pension			Other
		benefits			benefits			benefits			benefits			benefits			benefits			benefits			benefits			benefits
		and SIP			and SIP			and SIP
		(in millions)
	Service cost—benefits earned during the fiscal year	¥	39,709		¥	38,840		¥	39,309		¥	6,328		¥	968		¥	8,098		¥	1,114		¥	12,215		¥	1,526
	Interest cost on projected benefit obligation		31,509			26,648			22,464			10,649			1,192			10,716			1,135			13,467			1,352
	Expected return on plan assets		(55,336	)		(48,106	)		(54,222	)		(14,216	)		(1,106	)		(14,169	)		(1,030	)		(19,928	)		(1,423	)
	Amortization of net actuarial loss		29,424			42,496			23,941			6,221			514			8,030			715			9,808			776
	Amortization of prior service cost		(11,534	)		(12,309	)		(11,793	)		35			(57	)		54			(59	)		157			(69	)
	Amortization of net obligation at transition		—			—			—			—			105			—			105			—			—
	Loss (gain) on settlements and curtailment		4,378			2,600			41,456			40			—			95			(3	)		—			—
	Net periodic benefit cost	¥	38,150		¥	50,169		¥	61,155		¥	9,057		¥	1,616		¥	12,824		¥	1,977		¥	15,719		¥	2,162
Summary Of Assumptions Used In Computation [Table Text Block]	'
		Domestic subsidiaries									Foreign offices and subsidiaries
		2012			2013			2014			2012						2013						2014
		Pension			Pension			Pension			Pension			Other			Pension			Other			Pension			Other
		benefits			benefits			benefits			benefits			benefits			benefits			benefits			benefits			benefits
		and SIP			and SIP			and SIP
	Weighted-average assumptions used:
	Discount rates in determining expense		1.91	%		1.55	%		1.25	%		5.67	%		5.36	%		4.73	%		4.7	%		4.25	%		4.01	%
	Discount rates in determining benefit obligation		1.55			1.25			1.23			4.73			4.7			4.25			4.01			4.87			4.63
	Rates of increase in future compensation level for determining expense		3.23			3.31			3.07			4.67			—			4.6			—			4.58			—
	Rates of increase in future compensation level for determining benefit obligation		3.31			3.07			3.36			4.6			—			4.58			—			4.64			—
	Expected rates of return on plan assets		3.11			2.78			2.83			7.49			8			6.92			7.5			6.98			7.5
Assumed Health Care Cost Trend Rates And Effect Of A One-Percentage-Point Change For Foreign Offices And Subsidiaries [Table Text Block]	'
		MUAH						Other than MUAH
		2013(1)			2014(1)			2013(1)			2014(1)
	Initial trend rate		8.31	%		7.71	%		7.5	%		8	%
	Ultimate trend rate		4.5	%		4.5	%		4.5	%		5	%
	Year the rate reaches the ultimate trend rate		2021			2021			2017			2019
		MUAH						Other than MUAH
		One-percentage-			One-percentage-			One-percentage-			One-percentage-
		point increase			point decrease			point increase			point decrease
		(in millions)
	Effect on total of service and interest cost components		¥422		¥	(422	)		¥79		¥	(61	)
	Effect on postretirement benefit obligation		3,478			(2,951	)		1,128			(885	)
	Note:
	-1	Fiscal years of MUAH and foreign subsidiaries end on December 31. Therefore, the above tables present the rates and amounts at December 31, 2012 and 2013, respectively.
Combined Funded Status And Amounts Recognized In Balance Sheets [Table Text Block]	'
		Domestic subsidiaries												Foreign offices and subsidiaries
		2013						2014						2013						2014
		Non-contributory			Contributory			Non-contributory			Contributory			Pension			Other			Pension			Other
		pension benefits			pension			pension benefits			pension			benefits			benefits			benefits			benefits
		and SIP			benefits			and SIP			benefits
		(in millions)
	Change in benefit obligation:
	Benefit obligation at beginning of fiscal year	¥	1,383,933		¥	389,264		¥	1,433,161		¥	404,427		¥	225,361		¥	24,701		¥	283,224		¥	30,002
	Service cost		34,182			4,658			36,147			3,162			8,098			1,114			12,215			1,526
	Interest cost		20,510			6,138			17,448			5,016			10,716			1,135			13,467			1,352
	Plan participants’ contributions		—			—			—			—			14			450			5			648
	Acquisitions/ Divestitures		8			—			(807	)		—			—			—			9,359			—
	Amendments		—			—			(32	)		—			302			—			980			—
	Actuarial loss (gain)		65,369			15,583			26,417			(8,984	)		23,154			975			(24,716	)		(2,966	)
	Benefits paid		(55,396	)		(11,216	)		(55,608	)		(11,202	)		(13,161	)		(1,673	)		(9,851	)		(2,136	)
	Lump-sum payment		(15,445	)		—			(14,313	)		—			(440	)		—			(158	)		—
	Translation adjustments and other		—			—			224,238	(2)		(392,419	)(2)		29,180			3,300			61,356			5,920
	Benefit obligation at end of fiscal year		1,433,161			404,427			1,666,651			—			283,224			30,002			345,881			34,346
	Change in plan assets:
	Fair value of plan assets at beginning of fiscal year		1,317,074			433,710			1,462,406			458,171			182,791			13,370			233,081			18,185
	Actual return (loss) on plan assets		174,467			64,893			124,355			34,472			24,787			1,866			43,561			3,611
	Employer contributions		26,314			15,635			31,640			12,843			14,807			1,144			41,423			1,313
	Acquisitions/ Divestitures		(53	)		—			176			—			—			—			—			—
	Plan participants’ contributions		—			—			—			—			14			450			5			648
	Benefits paid		(55,396	)		(11,216	)		(55,608	)		(11,202	)		(13,161	)		(1,673	)		(9,851	)		(2,136	)
	Translation adjustments and other		—			(44,851	)(1)		441,360	(2)		(494,284	)(2)		23,843			3,028			59,876			4,224
	Fair value of plan assets at end of fiscal year		1,462,406			458,171			2,004,329			—			233,081			18,185			368,095			25,845
	Amounts recognized in the consolidated balance sheets:
	Prepaid benefit cost	¥	60,279		¥	53,744		¥	357,817		¥	—		¥	3,850		¥	—		¥	54,600		¥	—
	Accrued benefit cost		(31,034	)		—			(20,139	)		—			(53,993	)		(11,817	)		(32,386	)		(8,501	)
	Net amount recognized	¥	29,245		¥	53,744		¥	337,678		¥	—		¥	(50,143	)	¥	(11,817	)	¥	22,214		¥	(8,501	)
	Notes:
	-1	MUTB partially withdrew assets from employee retirement benefit trusts, amount of ¥44,851 million, which were established for the payment of employees’ pension benefits. The related plan remains in an overfunded status as of March 31, 2013. No gains or losses have been recognized as a consequence of this transaction.
	-2	MUTB separated the substitutional portion of its contributory CDBP and transferred the related obligation and assets to the Japanese government. The transferred obligation and assets to the Japanese government were ¥169,951 million and ¥52,971 million, respectively. Subsequent to the separation process, MUTB transferred the remaining corporate portion of its contributory CDBP into a non-contributory CDBP. The transferred obligation and assets to the non-contributory CDBP were ¥224,238 million and ¥441,313 million, respectively.
Aggregated Accumulated Benefit Obligations [Table Text Block]	'
		Domestic						Foreign offices
		subsidiaries						and subsidiaries
		2013			2014			2013			2014
		(in millions)
	Aggregated accumulated benefit obligations	¥	1,808,001		¥	1,639,563		¥	262,200		¥	318,971
Accumulated Benefit Obligations And Fair Value Of Plan Assets For Which Accumulated Benefit Obligations In Excess Of Plan Assets [Table Text Block]	'
		Domestic						Foreign offices
		subsidiaries						and subsidiaries
		2013			2014			2013			2014
		(in millions)
	Projected benefit obligations	¥	96,622		¥	55,684		¥	264,204		¥	57,972
	Accumulated benefit obligations		89,166			52,578			243,268			54,499
	Fair value of plan assets		65,601			37,033			210,793			25,812
Amounts Recognized In Accumulated OCI [Table Text Block]	'
		Domestic subsidiaries						Foreign offices and subsidiaries
		2013			2014			2013						2014
		Pension			Pension			Pension			Other			Pension			Other
		benefits			benefits			benefits			benefits			benefits			benefits
		and SIP			and SIP
		(in millions)
	Net actuarial loss	¥	488,936		¥	336,312		¥	98,654		¥	8,314		¥	57,474		¥	3,585
	Prior service cost		(46,580	)		(34,787	)		386			(100	)		1,129			(41	)
	Gross amount recognized in Accumulated OCI		442,356			301,525			99,040			8,214			58,603			3,544
	Taxes		(183,884	)		(133,606	)		(38,585	)		(3,212	)		(23,063	)		(767	)
	Net amount recognized in Accumulated OCI	¥	258,472		¥	167,919		¥	60,455		¥	5,002		¥	35,540		¥	2,777
Amounts Recognized In OCI [Table Text Block]	'
		Domestic subsidiaries						Foreign offices and subsidiaries
		2013			2014			2013						2014
		Pension			Pension			Pension			Other			Pension			Other
		benefits			benefits			benefits			benefits			benefits			benefits
		and SIP			and SIP
		(in millions)
	Net actuarial loss (gain) arising during the year	¥	(110,303	)	¥	(87,227	)	¥	11,326		¥	141		¥	(47,687	)	¥	(5,130	)
	Prior service cost arising during the year		—			—			270			—			862			—
	Losses (gains) due to amortization:
	Net actuarial loss		(42,496	)		(23,941	)		(8,030	)		(715	)		(9,808	)		(776	)
	Prior service cost		12,309			11,793			(54	)		59			(157	)		69
	Net obligation at transition		—			—			—			(105	)		—			—
	Curtailment and settlement		(2,600	)		(41,456	)		(95	)		3			—			—
	Foreign currency translation adjustments		—			—			10,112			895			16,353			1,167
	Total changes in Accumulated OCI	¥	(143,090	)	¥	(140,831	)	¥	13,529		¥	278		¥	(40,437	)	¥	(4,670	)
Expected Amounts That Will Be Amortized From Accumulated OCI In Next Fiscal Year [Table Text Block]	'
		Domestic			Foreign offices
		subsidiaries			and subsidiaries
		Pension			Pension			Other
		benefits			benefits			benefits
		and SIP
		(in millions)
	Net actuarial loss	¥	14,265		¥	6,402		¥	117
	Prior service cost		(8,932	)		109			(24	)
	Total	¥	5,333		¥	6,511		¥	93
Weighted-Average Target Asset Allocation Of Plan Assets For Pension Benefits And Other Benefits [Table Text Block]	'
		Domestic			Foreign offices
		subsidiaries			and subsidiaries
	Asset category	Pension			Pension			Other
		benefits			benefits			benefits
		and SIP
	Japanese equity securities		37.4	%		0.4	%		—	%
	Japanese debt securities		39.5			—			—
	Non-Japanese equity securities		11.8			57.9			70
	Non-Japanese debt securities		4.7			27.9			30
	Real estate		—			9.7			—
	Short-term assets		6.6			4.1			—
	Total		100	%		100	%		100	%
Expected Contributions To Plan Assets In Next Fiscal Year [Table Text Block]	'
	For the pension benefits of domestic subsidiaries	¥	39.4 billion
	For the pension benefits of foreign offices and subsidiaries		14.3 billion
	For the other benefits of foreign offices and subsidiaries		2.3 billion
Estimated Future Benefit Payments [Table Text Block]	'
		Domestic			Foreign offices
		subsidiaries			and subsidiaries
		Pension			Pension			Other
		benefits			benefits			benefits
		and SIP
		(in millions)
	Fiscal year ending March 31:
	2015	¥	79,808		¥	11,242		¥	1,819
	2016		81,641			12,173			1,935
	2017		82,599			13,517			2,036
	2018		82,740			14,614			2,160
	2019		82,608			15,906			2,255
	Thereafter (2020-2024)		410,139			108,484			12,778
Fair Value Of Each Major Category Of Plan Assets For Pension Benefits And SIP Investments [Table Text Block]	'
	At March 31, 2013	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	¥	76,763		¥	—		¥	—		¥	76,763		¥	—		¥	—		¥	—		¥	—
	Non-Japanese government bonds		13,898			2,761			—			16,659			—			7,600			—			7,600
	Other debt securities(1)		151			18,517			6,134			24,802			—			33,315			—			33,315
	Japanese marketable equity securities(2)		661,832			148			—			661,980			—			—			—			—
	Non-Japanese marketable equity securities		19,386			207			—			19,593			13,720			—			—			13,720
	Japanese pooled funds:
	Japanese marketable equity securities(2)		—			46,175			—			46,175			—			—			—			—
	Japanese debt securities(1)		—			403,006			—			403,006			—			—			—			—
	Non-Japanese marketable equity securities		—			190,367			—			190,367			—			—			—			—
	Non-Japanese debt securities		—			65,087			6,846			71,933			—			—			—			—
	Other		—			17,623			—			17,623			—			—			—			—
	Total pooled funds		—			722,258			6,846			729,104			—			—			—			—
	Other investment funds		—			98,520			48,631			147,151			91,582			65,068			14,486			171,136	(4)
	Japanese general account of life insurance companies(3)		—			163,503			—			163,503			—			—			—			—
	Other investments		1,636			79,386			—			81,022			839			4,488			1,983			7,310
	Total	¥	773,666		¥	1,085,300		¥	61,611		¥	1,920,577		¥	106,141		¥	110,471		¥	16,469		¥	233,081
	At March 31, 2014	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	¥	65,309		¥	—		¥	—		¥	65,309		¥	—		¥	—		¥	—		¥	—
	Non-Japanese government bonds		19,799			2,041			—			21,840			—			13,443			—			13,443
	Other debt securities(1)		523			11,798			5,983			18,304			—			52,463			—			52,463
	Japanese marketable equity securities(2)		713,152			127			—			713,279			—			—			—			—
	Non-Japanese marketable equity securities		12,166			1,122			—			13,288			24,515			—			—			24,515
	Japanese pooled funds:
	Japanese marketable equity securities(2)		—			26,792			—			26,792			—			—			—			—
	Japanese debt securities(1)		—			400,132			—			400,132			—			—			—			—
	Non-Japanese marketable equity securities		—			176,710			—			176,710			—			—			—			—
	Non-Japanese debt securities		—			91,642			7,342			98,984			—			—			—			—
	Other		—			13,026			—			13,026			—			—			—			—
	Total pooled funds		—			708,302			7,342			715,644			—			—			—			—
	Other investment funds		—			132,105			43,446			175,551			155,637			87,103			26,740			269,480	(4)
	Japanese general account of life insurance companies(3)		—			173,398			—			173,398			—			—			—			—
	Other investments		2,038			105,678			—			107,716			620			4,673			2,901			8,194
	Total	¥	812,987		¥	1,134,571		¥	56,771		¥	2,004,329		¥	180,772		¥	157,682		¥	29,641		¥	368,095
	Notes:
	-1	These debt securities include debt securities issued by the MUFG Group in the amount of ¥471 million (0.02% of plan assets) and ¥401 million (0.02% of plan assets) to the pension benefits and SIPs at March 31, 2013 and 2014, respectively.
	-2	Japanese marketable equity securities include common stocks issued by the MUFG Group in the amount of ¥6,864 million (0.32% of plan assets) and ¥7,354 million (0.31% of plan assets) to the pension benefits and SIPs at March 31, 2013 and 2014, respectively.
	-3	“Japanese general accounts of life insurance companies” is a contract with life insurance companies that guarantees a return of approximately 1.17% from April 1, 2012 to March 31, 2013 and 1.24% from April 1, 2013 to March 31, 2014.
	-4	Other investment funds of the foreign offices and subsidiaries are mainly comprised of ¥87,243 million of mutual funds and ¥13,531 million of real estate funds, and of ¥148,360 million of mutual funds and ¥25,486 million of real estate funds, which were held by MUAH at December 31, 2012 and 2013, respectively.
Fair Value Of Each Major Category Of Plan Assets For Other Post Retirement Plan Investments [Table Text Block]	'
		Foreign offices and subsidiaries
		March 31, 2013												March 31, 2014
	Assets category	Level 1			Level 2			Level 3			Total			Level 1			Level 2			Level 3			Total
		(in millions)
	Other debt securities	¥	—		¥	3,619		¥	—		¥	3,619		¥	—		¥	5,548		¥	—		¥	5,548
	Other investment funds(1)		8,901			—			—			8,901			13,531			—			—			13,531
	Other investments		—			5,665			—			5,665			—			6,766			—			6,766
	Total	¥	8,901		¥	9,284		¥	—		¥	18,185		¥	13,531		¥	12,314		¥	—		¥	25,845
	Note:
	-1	Other investment funds mainly consist of mutual funds and common collective funds.
Reconciliation Of Plan Assets Measured At Fair Value Using Significant Unobservable Inputs (Level3) [Table Text Block]	'
		Domestic subsidiaries
	Assets category	March 31,			Realized			Unrealized			Purchase,			Transfer			Transfer			March 31,
		2012			gains			gains			sales and			into			out of			2013
					(losses)			(losses)			settlements			Level 3			Level 3
		(in millions)
	Other debt securities	¥	5,995		¥	18		¥	409		¥	(248	)	¥	—		¥	(40	)	¥	6,134
	Non-Japanese marketable equity securities		87			30			—			(117	)		—			—			—
	Japanese pooled funds:
	Non-Japanese debt securities		5,807			—			1,042			(3	)		—			—			6,846
	Other		2,501			—			—			—			—			(2,501	)		—
	Total pooled funds		8,308			—			1,042			(3	)		—			(2,501	)		6,846
	Other investment funds		41,097			(389	)		3,997			(4,503	)		8,429			—			48,631
	Total	¥	55,487		¥	(341	)	¥	5,448		¥	(4,871	)	¥	8,429		¥	(2,541	)	¥	61,611
		Foreign offices and subsidiaries
	Assets category	March 31,			Realized			Unrealized			Purchase,			Transfer			Transfer			March 31,
		2012			gains			gains			sales and			into			out of			2013
					(losses)			(losses)			settlements			Level 3			Level 3
		(in millions)
	Other investment funds	¥	12,282		¥	—		¥	1,075		¥	1,129		¥	—		¥	—		¥	14,486
	Other investments		344			—			1,208			431			—			—			1,983
	Total	¥	12,626		¥	—		¥	2,283		¥	1,560		¥	—		¥	—		¥	16,469
		Domestic subsidiaries
	Assets category	March 31,			Realized			Unrealized			Purchase,			Transfer			Transfer			March 31,
		2013			gains			gains			sales and			into			out of			2014
					(losses)			(losses)			settlements			Level 3			Level 3
		(in millions)
	Other debt securities	¥	6,134		¥	(4	)	¥	(85	)	¥	(12	)	¥	—		¥	(50	)	¥	5,983
	Japanese pooled funds:
	Non-Japanese debt securities		6,846			—			483			13			—			—			7,342
	Total pooled funds		6,846			—			483			13			—			—			7,342
	Other investment funds		48,631			(2,616	)		1,381			(3,950	)		—			—			43,446
	Total	¥	61,611		¥	(2,620	)	¥	1,779		¥	(3,949	)	¥	—		¥	(50	)	¥	56,771
		Foreign offices and subsidiaries
	Assets category	March 31,			Realized			Unrealized			Purchase,			Transfer			Transfer			March 31,
		2013			gains			gains			sales and			into			out of			2014
					(losses)			(losses)			settlements			Level 3			Level 3
		(in millions)
	Other investment funds	¥	14,486		¥	—		¥	6,688		¥	5,566		¥	—		¥	—		¥	26,740
	Other investments		1,983			11			864			43			—			—			2,901
	Total	¥	16,469		¥	11		¥	7,552		¥	5,609		¥	—		¥	—		¥	29,641

Other_Assets_And_Liabilities_T1

Other Assets And Liabilities [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Major Components Of Other Assets And Liabilities [Table Text Block]	'
		2013		2014
		(in millions)
	Other assets:
	Accounts receivable:
	Receivables from brokers, dealers and customers for securities transactions	¥	1,217,164	¥	2,073,499
	Other		956,000		1,135,009
	Investments in equity method investees		1,273,847		1,620,168
	Prepaid benefit cost (Note 13)		117,873		412,417
	Cash collateral pledged (Note 8)		1,573,698		1,045,851
	Other		1,647,213		1,731,642
	Total	¥	6,785,795	¥	8,018,586
	Other liabilities:
	Accounts payable:
	Payables to brokers, dealers and customers for securities transactions	¥	1,047,514	¥	583,845
	Other		1,053,294		1,499,191
	Deferred tax liabilities		127,218		253,714
	Allowance for off-balance sheet credit instruments		55,915		69,871
	Accrued benefit cost (Note 13)		96,844		61,026
	Guarantees and indemnifications		50,433		44,824
	Cash collateral received (Note 8)		366,544		454,506
	Accrued and other liabilities		2,250,927		2,640,034
	Total	¥	5,048,689	¥	5,607,011
Summarized Financial Information Of Morgan Stanley [Table Text Block]	'
		2013		2014
		(in billions)
	Trading assets	¥	25,134	¥	26,712
	Federal funds sold and securities purchased under agreements to resell		13,206		11,072
	Securities borrowed		12,765		15,190
	Total assets		75,370		85,566
	Trading liabilities		12,459		11,485
	Securities sold under agreements to repurchase and Securities loaned		15,012		15,083
	Long-term borrowings		15,532		15,785
	Total liabilities		68,740		78,334
	Nonredeemable noncontrolling interests		317		329
		2012		2013		2014
		(in billions)
	Net revenues	¥	2,517	¥	2,271	¥	3,333
	Total non-interest expenses		2,084		2,105		2,812
	Income from continuing operations before income taxes		433		166		521
	Net income applicable to Morgan Stanley		244		100		349
Summarized Financial Information Of Equity Method Investees Other Than Morgan Stanley [Table Text Block]	'
		2013		2014
		(in billions)
	Net loans	¥	7,673	¥	9,493
	Total assets		12,906		16,277
	Deposits		2,729		4,674
	Total liabilities		9,455		12,247
	Noncontrolling interests		181		457
		2012		2013		2014
		(in billions)
	Total interest income	¥	475	¥	444	¥	543
	Total interest expense		98		92		165
	Net interest income		377		352		378
	Provision for credit losses		51		55		59
	Income before income tax expense		128		163		214
	Net income		75		124		159

Offsetting_Of_Derivatives_Repu1

Offsetting Of Derivatives, Repurchase Agreements, And Securities Lending Transactions [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Summary Of Offsetting Of Derivatives, Repurchase Agreements, And Securities Lending Transactions [Table Text Block]	'
	At March 31, 2013	Gross amounts of		Gross amounts			Net amounts		Gross amounts not offset in						Net amounts
		recognized		offset in the			presented in the		the consolidated balance sheet
		assets/liabilities		consolidated			consolidated
				balance sheet			balance sheet		Financial			Cash collateral
									instruments			received/pledged
		(in billions)
	Financial assets:
	Derivative assets	¥	14,648	¥	—		¥	14,648	¥	(12,341	)	¥	(283	)	¥	2,024
	Receivables under resale agreements		6,960		(1,300	)		5,660		(4,849	)		—			811
	Receivables under securities borrowing transactions		2,615		—			2,615		(1,815	)		—			800
	Total	¥	24,223	¥	(1,300	)	¥	22,923	¥	(19,005	)	¥	(283	)	¥	3,635
	Financial liabilities:
	Derivative liabilities	¥	14,867	¥	—		¥	14,867	¥	(12,134	)	¥	(1,207	)	¥	1,526
	Payables under repurchase		17,188		(1,300	)		15,888		(15,804	)		—			84
	agreements(1)
	Payables under securities lending transactions		3,993		—			3,993		(1,695	)		—			2,298
	Obligations to return securities received as collateral		3,035		—			3,035		(374	)		—			2,661
	Total	¥	39,083	¥	(1,300	)	¥	37,783	¥	(30,007	)	¥	(1,207	)	¥	6,569
		Gross amounts		Gross amounts			Net amounts		Gross amounts not offset in						Net amounts
		of recognized		offset in the			presented in the		the consolidated balance sheet
		assets/		consolidated			consolidated
	At March 31, 2014	liabilities		balance sheet			balance sheet		Financial			Cash collateral
									instruments			received/pledged
		(in billions)
	Financial assets:
	Derivative assets	¥	11,810	¥	—		¥	11,810	¥	(9,552	)	¥	(360	)	¥	1,898
	Receivables under resale agreements		10,346		(3,046	)		7,300		(6,502	)		(7	)		791
	Receivables under securities borrowing transactions		4,210		—			4,210		(3,614	)		—			596
	Total	¥	26,366	¥	(3,046	)	¥	23,320	¥	(19,668	)	¥	(367	)	¥	3,285
	Financial liabilities:
	Derivative liabilities	¥	11,765	¥	—		¥	11,765	¥	(9,437	)	¥	(984	)	¥	1,344
	Payables under repurchase agreements(1)		24,674		(3,046	)		21,628		(21,345	)		(5	)		278
	Payables under securities lending transactions		5,521		—			5,521		(4,795	)		(9	)		717
	Obligations to return securities received as collateral		3,971		—			3,971		(220	)		—			3,751
	Total	¥	45,931	¥	(3,046	)	¥	42,885	¥	(35,797	)	¥	(998	)	¥	6,090
	Note:
	-1	Payables under repurchase agreements in the above table include those under long-term repurchase agreements of ¥188,100 million and ¥360,220 million at March 31, 2013 and 2014, respectively, which are included in Long-term debt in the accompanying consolidated balance sheets.

Preferred_Stock_Text_Block_Tab

Preferred Stock [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Number Of Shares Of Preferred Stock Issued And Outstanding [Table Text Block]	'
		Outstanding at		Net change		Outstanding at		Net change		Outstanding at
		March 31, 2012				March 31, 2013				March 31, 2014
		(number of shares)
	Preferred stock:
	Class 5		156,000,000		—		156,000,000		—		156,000,000
	Class 11		1,000		—		1,000		—		1,000
	Total		156,001,000		—		156,001,000		—		156,001,000
Aggregate Liquidation Preference Of Preferred Stock Issued And Outstanding [Table Text Block]	'
		Aggregate amount at		Net change		Aggregate amount at		Net change		Aggregate amount at
		March 31, 2012				March 31, 2013				March 31, 2014
		(in millions)
	Preferred stock:
	Class 5	¥	390,000	¥	—	¥	390,000	¥	—	¥	390,000
	Class 11		1		—		1		—		1
	Total	¥	390,001	¥	—	¥	390,001	¥	—	¥	390,001

Common_Stock_And_Capital_Surpl1

Common Stock And Capital Surplus [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Changes In Number Of Issued Shares Of Common Stock [Table Text Block]	'
		2012		2013		2014
		(shares)
	Balance at beginning of fiscal year		14,150,894,620		14,154,534,220		14,158,585,720
	Issuance of new shares of common stock by way of exercise of the stock acquisition rights		3,639,600		4,051,500		5,440,700
	Balance at end of fiscal year		14,154,534,220		14,158,585,720		14,164,026,420

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income (Loss) [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Changes In Accumulated OCI, Net Of Tax And Net Of Noncontrolling Interests [Table Text Block]	'
		2012			2013			2014
		(in millions)
	Accumulated other comprehensive income (loss), net of taxes:
	Net unrealized gains on investment securities:
	Balance at beginning of fiscal year	¥	308,071		¥	482,434		¥	1,106,316
	Net change during the fiscal year		174,363			623,882			166,407
	Balance at end of fiscal year	¥	482,434		¥	1,106,316		¥	1,272,723
	Net unrealized gains (losses) on derivatives qualifying for cash flow hedges:
	Balance at beginning of fiscal year	¥	(1,690	)	¥	(1,253	)	¥	2,170
	Net change during the fiscal year		437			3,423			-361
	Balance at end of fiscal year	¥	(1,253	)	¥	2,170		¥	1,809
	Defined benefit plans:
	Balance at beginning of fiscal year	¥	(307,711	)	¥	(401,923	)	¥	(322,537	)
	Net change during the fiscal year		(94,212	)		79,386			116,201
	Balance at end of fiscal year	¥	(401,923	)	¥	(322,537	)	¥	-206,336
	Foreign currency translation adjustments:
	Balance at beginning of fiscal year	¥	(627,331	)	¥	(675,658	)	¥	(211,602	)
	Net change during the fiscal year		(48,327	)		464,056			501,088
	Balance at end of fiscal year	¥	(675,658	)	¥	(211,602	)	¥	289,486
	Balance at end of fiscal year	¥	(596,400	)	¥	574,347		¥	1,357,682
Before Tax And Net Of Tax Changes In Each Component Of Accumulated OCI [Table Text Block]	'
		2012									2013									2014
		Before tax			Tax			Net of tax			Before tax			Tax			Net of tax			Before tax			Tax			Net of tax
					(expense)									(expense)									(expense)
					or benefit									or benefit									or benefit
		(in millions)
	Net unrealized gains (losses) on investment securities:
	Net unrealized gains on investment securities	¥	296,347		¥	(118,638	)	¥	177,709		¥	1,108,665		¥	(390,387	)	¥	718,278		¥	453,494		¥	(178,200	)	¥	275,294
	Reclassification adjustment for gains included in net income before attribution of noncontrolling interests		(4,511	)		1,641			(2,870	)		(143,664	)		53,856			(89,808	)		(215,553	)		81,778			(133,775	)
	Net change		291,836			(116,997	)		174,839			965,001			(336,531	)		628,470			237,941			(96,422	)		141,519
	Net unrealized gains (losses) on investment securities attributable to noncontrolling interests								476									4,588									(24,888	)
	Net unrealized gains on investment securities attributable to Mitsubishi UFJ Financial Group								174,363									623,882									166,407
	Net unrealized gains (losses) on derivatives qualifying for cash flow hedges:
	Net unrealized gains (losses) on derivatives qualifying for cash flow		(178	)		99			(79	)		6,850			(2,693	)		4,157			3,615			(1,419	)		2,196
	hedges
	Reclassification adjustment for losses (gains) included in net income before attribution of noncontrolling interests		850			(334	)		516			(1,210	)		476			(734	)		(4,211	)		1,654			(2,557	)
	Net change		672			(235	)		437			5,640			(2,217	)		3,423			(596	)		235			(361	)
	Net unrealized gains on derivatives qualifying for cash flow hedges attributable to noncontrolling interests								—									—									—
	Net unrealized gains (losses) on derivatives qualifying for cash flow hedges attributable to Mitsubishi UFJ Financial Group								437									3,423									(361	)
		2012									2013									2014
		Before tax			Tax			Net of tax			Before tax			Tax			Net of tax			Before tax			Tax			Net of tax
					(expense)									(expense)									(expense)
					or benefit									or benefit									or benefit
		(in millions)
	Defined benefit plans:
	Defined benefit plans		(189,916	)		77,992			(111,924	)		81,568			(27,506	)		54,062			122,644			(45,709	)		76,935
	Reclassification adjustment for losses included in net income before attribution of noncontrolling interests		29,128			(11,419	)		17,709			41,642			(15,707	)		25,935			64,519			(23,806	)		40,713
	Net change		(160,788	)		66,573			(94,215	)		123,210			(43,213	)		79,997			187,163			(69,515	)		117,648
	Defined benefit plans attributable to noncontrolling interests								(3	)								611									1,447
	Defined benefit plans attributable to Mitsubishi UFJ Financial Group								(94,212	)								79,386									116,201
	Foreign currency translation adjustments:
	Foreign currency translation adjustments		(68,269	)		(1,528	)		(69,797	)		437,485			406			437,891			557,941			(50,516	)		507,425
	Reclassification adjustment for losses included in net income before attribution of noncontrolling interests		31,956			(11,702	)		20,254			48,311			(18,943	)		29,368			1,603			(898	)		705
	Net change		(36,313	)		(13,230	)		(49,543	)		485,796			(18,537	)		467,259			559,544			(51,414	)		508,130
	Foreign currency translation adjustments attributable to noncontrolling interests								(1,216	)								3,203									7,042
	Foreign currency translation adjustments attributable to Mitsubishi UFJ Financial Group								(48,327	)								464,056									501,088
	Other comprehensive income attributable to Mitsubishi UFJ Financial Group							¥	32,261								¥	1,170,747								¥	783,335
Reclassification Of Significant Items Out Of Accumulated OCI [Table Text Block]	'
	Details of Accumulated OCI components	Amount reclassified out of			Line items in the consolidated
		Accumulated OCI			statements of income
		(in millions)
	Net unrealized losses (gains) on investment securities
	Net gains on sales and redemptions of securities available-for-sale	¥	(218,150	)	Investment securities gains—net
	Impairment losses on investment securities		2,622		Investment securities gains—net
	Other		(25	)
			(215,553	)	Total before tax
			81,778		Income tax expense
		¥	(133,775	)	Net of tax
	Net unrealized losses (gains) on derivatives qualifying for cash flow hedges
	Interest rate contracts	¥	(4,289	)	Interest income on Loans, including fees
	Other		78
			(4,211	)	Total before tax
			1,654		Income tax expense
		¥	(2,557	)	Net of tax
	Defined benefit plans
	Net actuarial loss	¥	34,525	(1)
	Prior service cost		(11,705	)(1)
	Loss on settlements and curtailment, and other		41,699	(1)
			64,519		Total before tax
			(23,806	)	Income tax expense
		¥	40,713		Net of tax
	Foreign currency translation adjustments	¥	1,603		Other non-interest expenses
			1,603		Total before tax
			(898	)	Income tax expense
		¥	705		Net of tax
	Total reclassifications for the period	¥	(153,642	)	Total before tax
			58,728		Income tax expense
		¥	(94,914	)	Net of tax
	Note:
	-1	These Accumulated OCI components are included in the computation of net periodic benefit cost. See Note 13 for more information.

Noncontrolling_Interests_Text_1

Noncontrolling Interests [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Effect On MUFG's Shareholders' Equity From Changes In Ownership Of Subsidiaries [Table Text Block]	'
		2012			2013			2014
		(in millions)
	Net income attributable to Mitsubishi UFJ Financial Group	¥	416,231		¥	1,069,124		¥	1,015,393
	Transactions between Mitsubishi UFJ Financial Group and the noncontrolling interest shareholders:
	Issuance of new shares of Mitsubishi UFJ Morgan Stanley Securities Co., Ltd. (Note 2)		(20,000	)		—			—
	Purchase of shares of Mitsubishi UFJ Merrill Lynch PB Securities Co., Ltd. from noncontrolling interest shareholders (Note 2)		—			(30,655	)		—
	Reorganization of Mitsubishi UFJ Morgan Stanley PB Securities Co., Ltd. (Note 2)		—			—			13,839
	Other		759			(412	)		204
	Net transfers from (to) the noncontrolling interest shareholders		(19,241	)		(31,067	)		14,043
	Change from net income attributable to Mitsubishi UFJ Financial Group and transactions between Mitsubishi UFJ Financial Group and the noncontrolling interest shareholders	¥	396,990		¥	1,038,057		¥	1,029,436

Regulatory_Capital_Requirement1

Regulatory Capital Requirements [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Risk-Adjusted Capital Amounts And Ratios, Japan [Table Text Block]	'
		Actual					For capital
							adequacy purposes
		Amount		Ratio			Amount		Ratio
		(in millions, except percentages)
	Consolidated:
	At March 31, 2013:
	Total capital (to risk-weighted assets):
	MUFG	¥	14,673,951		16.68	%	¥	7,037,491		8	%
	BTMU		12,034,152		17.51			5,497,550		8
	MUTB		2,035,576		17.79			914,984		8
	Tier1 capital (to risk-weighted assets):
	MUFG		11,214,815		12.74			3,958,589		4.5
	BTMU		9,015,774		13.11			3,092,372		4.5
	MUTB		1,575,140		13.77			514,678		4.5
	Common Equity Tier1 capital (to risk-weighted assets):
	MUFG		10,300,558		11.7			3,078,902		3.5
	BTMU		8,052,750		11.71			2,405,178		3.5
	MUTB		1,500,578		13.12			400,305		3.5
	At March 31, 2014:
	Total capital (to risk-weighted assets):
	MUFG	¥	15,394,342		15.53	%	¥	7,926,746		8	%
	BTMU		12,256,176		15.57			6,294,248		8
	MUTB		2,057,338		18.38			895,051		8
	Tier1 capital (to risk-weighted assets):
	MUFG		12,341,870		12.45			5,449,638		5.5
	BTMU		9,611,553		12.21			4,327,295		5.5
	MUTB		1,652,410		14.76			615,347		5.5
	Common Equity Tier1 capital (to risk-weighted assets):
	MUFG		11,153,032		11.25			3,963,373		4
	BTMU		8,696,589		11.05			3,147,124		4
	MUTB		1,590,690		14.21			447,525		4
	Stand-alone:
	At March 31, 2013:
	Total capital (to risk-weighted assets):
	BTMU	¥	11,501,001		18.52	%	¥	4,966,322		8	%
	MUTB		2,039,037		17.94			908,852		8
	Tier1 capital (to risk-weighted assets):
	BTMU		8,685,464		13.99			2,793,556		4.5
	MUTB		1,502,425		13.22			511,229		4.5
	Common Equity Tier1 capital (to risk-weighted assets):
	BTMU		7,301,380		11.76			2,172,766		3.5
	MUTB		1,419,797		12.49			397,623		3.5
	At March 31, 2014:
	Total capital (to risk-weighted assets):
	BTMU	¥	11,582,199		17.52	%	¥	5,287,273		8	%
	MUTB		2,068,948		18.51			893,909		8
	Tier1 capital (to risk-weighted assets):
	BTMU		9,087,335		13.74			3,635,000		5.5
	MUTB		1,606,684		14.37			614,563		5.5
	Common Equity Tier1 capital (to risk-weighted assets):
	BTMU		7,854,651		11.88			2,643,636		4
	MUTB		1,533,733		13.72			446,955		4
Risk-Adjusted Capital Amounts And Ratios, United States Of America [Table Text Block]	'
		Actual					For capital
							adequacy purposes
		Amount		Ratio			Amount		Ratio
		(in millions, except percentages)
	MUAH:
	At December 31, 2012:
	Total capital (to risk-weighted assets)	$	11,048		13.34	%	$	6,628		8	%
	Tier I capital (to risk-weighted assets)		9,864		11.91			3,314		4
	Tier I capital (to quarterly average assets)(1)		9,864		11.18			3,531		4
	At December 31, 2013:
	Total capital (to risk-weighted assets)	$	13,499		14.61	%	$	7,393		8	%
	Tier I capital (to risk-weighted assets)		11,471		12.41			3,696		4
	Tier I capital (to quarterly average assets)(1)		11,471		11.27			4,073		4
		Actual					For capital					Ratios OCC
							adequacy purposes					requires to be
												“well capitalized”
		Amount		Ratio			Amount		Ratio			Amount		Ratio
		(in millions, except percentages)
	MUB:
	At December 31, 2012:
	Total capital (to risk-weighted assets)	$	10,362		13.17	%	$	6,294		8	%	$	7,867		10	%
	Tier I capital (to risk-weighted assets)		9,192		11.68			3,147		4			4,720		6
	Tier I capital (to quarterly average assets)(1)		9,162		10.51			3,498		4			4,373		5
	At December 31, 2013:
	Total capital (to risk-weighted assets)	$	12,990		14.91	%	$	6,970		8	%	$	8,713		10	%
	Tier I capital (to risk-weighted assets)		11,274		12.94			3,485		4			5,228		6
	Tier I capital (to quarterly average assets)(1)		11,274		11.13			4,051		4			5,063		5
	Note:
	-1	Excludes certain intangible assets.

Earnings_Per_Common_Share_Appl1

Earnings Per Common Share Applicable To Common Shareholders Of MUFG [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
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 [Table Text Block]	'
		2012			2013			2014
		(in millions)
	Income (Numerator):
	Net income attributable to Mitsubishi UFJ Financial Group	¥	416,231		¥	1,069,124		¥	1,015,393
	Income allocable to preferred shareholders:
	Cash dividends paid		(17,940	)		(17,940	)		(17,940	)
	Changes in a foreign affiliated company’s interests in its subsidiary		—			—			(3,301	)
	Earnings applicable to common shareholders of Mitsubishi UFJ Financial Group		398,291			1,051,184			994,152
	Effect of dilutive instruments:
	Stock options and restricted stock units—Morgan Stanley		—			(336	)		(1,875	)
	Convertible preferred stock—Mitsubishi UFJ Merrill Lynch PB Securities Co., Ltd.		(589	)		—			—
	Earnings applicable to common shareholders of Mitsubishi UFJ Financial Group and assumed conversions	¥	397,702		¥	1,050,848		¥	992,277
		2012			2013			2014
		(thousands of shares)
	Shares (Denominator):
	Weighted average common shares outstanding		14,140,136			14,148,060			14,158,698
	Effect of dilutive instruments:
	Convertible preferred stock		1			1			1
	Stock options		16,683			21,019			21,381
	Weighted average common shares for diluted computation		14,156,820			14,169,080			14,180,080
		2012			2013			2014
		(in yen)
	Earnings per common share applicable to common shareholders of Mitsubishi UFJ Financial Group:
	Basic earnings per common share:
	Earnings applicable to common shareholders of Mitsubishi UFJ Financial Group	¥	28.17		¥	74.3		¥	70.21
	Diluted earnings per common share:
	Earnings applicable to common shareholders of Mitsubishi UFJ Financial Group	¥	28.09		¥	74.16		¥	69.98

Derivative_Financial_Instrumen1

Derivative Financial Instruments [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Notional Amounts Of Derivative Contracts [Table Text Block]	'
		Notional amounts(1)
		2013			2014
		(in trillions)
	Interest rate contracts	¥	956.6		¥	962.5
	Foreign exchange contracts		155.2			169.5
	Equity contracts		3			3.1
	Commodity contracts		2.2			2.5
	Credit derivatives		6.6			7.1
	Others		1.9			2.7
	Total	¥	1,125.50		¥	1,147.40
	Note:
	-1	Includes both written and purchased position.
Fair Value Information On Derivative Instruments Recorded On Consolidated Balance Sheet [Table Text Block]	'
		Fair value of derivative instruments
		March 31, 2013(1)(5)									March 31, 2014(1)(5)
		Not designated			Designated			Total			Not designated			Designated			Total
		as hedges(2)			as hedges(3)			derivatives(4)			as hedges(2)			as hedges(3)			derivatives(4)
		(in billions)
	Derivative assets:
	Interest rate contracts	¥	11,214		¥	2		¥	11,216		¥	8,616		¥	1		¥	8,617
	Foreign exchange contracts		3,193			—			3,193			2,916			—			2,916
	Equity contracts		104			—			104			149			—			149
	Commodity contracts		73			—			73			69			—			69
	Credit derivatives		62			—			62			57			—			57
	Others(6)		—			—			—			2			—			2
	Total derivative assets	¥	14,646		¥	2		¥	14,648		¥	11,809		¥	1		¥	11,810
	Derivative liabilities:
	Interest rate contracts	¥	11,205		¥	—		¥	11,205		¥	8,522		¥	1		¥	8,523
	Foreign exchange contracts		3,429			—			3,429			2,999			—			2,999
	Equity contracts		131			—			131			144			—			144
	Commodity contracts		64			—			64			60			—			60
	Credit derivatives		62			—			62			62			—			62
	Others(6)		(24	)		—			(24	)		(23	)		—			(23	)
	Total derivative liabilities	¥	14,867		¥	—		¥	14,867		¥	11,764		¥	1		¥	11,765
	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 except for (6).
	-3	The MUFG Group adopts hedging strategies and applies hedge accounting to certain derivative transactions entered into by MUAH. 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	Others include mainly bifurcated embedded derivatives carried at fair value, which are presented in Deposits and Long-term debt.
Gains And Losses For Trading And Risk Management Derivatives (Not Designated As Hedging Instruments) [Table Text Block]	'
		Trading and risk management derivatives gains and losses
		(Not designated as hedging instruments)
		Foreign exchange			Trading account			Total
		gains (losses)—net			profits (losses)—net
		(in billions)
	Fiscal year ended March 31, 2012:
	Interest rate contracts	¥	—		¥	160		¥	160
	Foreign exchange contracts		(94	)		—			(94	)
	Equity contracts		—			(47	)		(47	)
	Commodity contracts		—			(1	)		(1	)
	Credit derivatives		—			2			2
	Others		(1	)		(36	)		(37	)
	Total	¥	(95	)	¥	78		¥	(17	)
	Fiscal year ended March 31, 2013:
	Interest rate contracts	¥	—		¥	121		¥	121
	Foreign exchange contracts		(92	)		—			(92	)
	Equity contracts		—			(138	)		(138	)
	Commodity contracts		—			4			4
	Credit derivatives		—			(11	)		(11	)
	Others		(2	)		(59	)		(61	)
	Total	¥	(94	)	¥	(83	)	¥	(177	)
	Fiscal year ended March 31, 2014:
	Interest rate contracts	¥	—		¥	30		¥	30
	Foreign exchange contracts		(51	)		—			(51	)
	Equity contracts		—			(105	)		(105	)
	Commodity contracts		—			3			3
	Credit derivatives		—			(6	)		(6	)
	Others		(2	)		(6	)		(8	)
	Total	¥	(53	)	¥	(84	)	¥	(137	)
Gains And Losses For Derivatives Designated As Cash Flow Hedges [Table Text Block]	'
		For the fiscal year ended March 31,
		2012			2013			2014
		(in billions)
	Gains (losses) recognized in Accumulated OCI on derivative instruments (Effective portion)
	Interest rate contracts	¥	—		¥	7		¥	3
	Total	¥	—		¥	7		¥	3
	Gains (losses) reclassified from Accumulated OCI into income (Effective portion)
	Interest rate contracts(1)	¥	(1	)	¥	1		¥	4
	Total	¥	(1	)	¥	1		¥	4
	Gains (losses) recognized in income on derivative instruments (Ineffective portion and amount excluded from effectiveness testing)
	Interest rate contracts	¥	—		¥	—		¥	—
	Total	¥	—		¥	—		¥	—
	Note:
	-1	Included in Interest income.
Protection Sold Through Credit Default Swaps And Credit-Linked Notes [Table Text Block]	'
		Protection sold
		Maximum potential/Notional amount												Fair value
		by expiration period
	At March 31, 2013:	1 year			1-5 years			Over			Total			(Asset)/
		or less						5 years						Liability(1)
		(in millions)
	Single name credit default swaps:
	Investment grade(2)	¥	488,834		¥	1,775,720		¥	102,613		¥	2,367,167		¥	(8,863	)
	Non-investment grade		75,959			164,215			13,793			253,967			9,275
	Not rated		10,807			4,024			—			14,831			(73	)
	Total		575,600			1,943,959			116,406			2,635,965			339
	Index and basket credit default swaps held by BTMU:
	Investment grade(2)		34,479			47,599			116,173			198,251			600
	Non-investment grade		—			940			—			940			—
	Total		34,479			48,539			116,173			199,191			600
	Index and basket credit default swaps held by MUSHD:
	Investment grade(2)		7,680			367,814			9,000			384,494			(4,131	)
	Non-investment grade		7,203			2,284			—			9,487			(153	)
	Not rated		—			24,708			—			24,708			215
	Total		14,883			394,806			9,000			418,689			(4,069	)
	Total index and basket credit default swaps sold		49,362			443,345			125,173			617,880			(3,469	)
	Total credit default swaps sold	¥	624,962		¥	2,387,304		¥	241,579		¥	3,253,845		¥	(3,130	)
	Credit-linked notes(3)	¥	7,500		¥	1,505		¥	4,517		¥	13,522		¥	(12,741	)
		Protection sold
		Maximum potential/Notional amount												Fair value
		by expiration period
	At March 31, 2014:	1 year			5-Jan			Over			Total			(Asset)/
		or less			years			5 years						Liability(1)
		(in millions)
	Single name credit default swaps:
	Investment grade(2)	¥	422,991		¥	1,952,552		¥	78,741		¥	2,454,284		¥	(30,634	)
	Non-investment grade		49,579			180,168			2,750			232,497			1,326
	Not rated		1,132			4,221			—			5,353			(74	)
	Total		473,702			2,136,941			81,491			2,692,134			(29,382	)
	Index and basket credit default swaps held by BTMU:
	Investment grade(2)		940			83,816			166,629			251,385			(3,316	)
	Non-investment grade		—			—			—			—			—
	Total		940			83,816			166,629			251,385			(3,316	)
	Index and basket credit default swaps held by MUSHD:
	Investment grade(2)		122,837			339,606			1,000			463,443			(5,520	)
	Non-investment grade		—			7,407			—			7,407			(779	)
	Not rated		—			51,527			—			51,527			(487	)
	Total		122,837			398,540			1,000			522,377			(6,786	)
	Total index and basket credit default swaps sold		123,777			482,356			167,629			773,762			(10,102	)
	Total credit default swaps sold	¥	597,479		¥	2,619,297		¥	249,120		¥	3,465,896		¥	(39,484	)
	Credit-linked notes(3)	¥	—		¥	—		¥	4,546		¥	4,546		¥	(4,368	)
	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.
	-3	Fair value amounts shown represent the fair value of the hybrid instruments.

Obligations_Under_Guarantees_A1

Obligations Under Guarantees And Other Off-Balance Sheet Instruments [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Contractual Or Notional Amounts Of Guarantees With Amount By Expiration Period [Table Text Block]	'
		Maximum		Amount by expiration period
		potential/
		Contractual
		or Notional
	At March 31, 2013:	amount		1 year		1-5 years		Over
				or less				5 years
		(in billions)
	Standby letter of credit and financial guarantees	¥	3,849	¥	2,101	¥	1,094	¥	654
	Performance guarantees		2,214		1,509		627		78
	Derivative instruments(1)		144,471		99,846		35,784		8,841
	Liabilities of trust accounts		4,839		3,969		300		570
	Total	¥	155,373	¥	107,425	¥	37,805	¥	10,143
		Maximum		Amount by expiration period
		potential/
		Contractual
		or Notional
	At March 31, 2014:	amount		1 year		1-5 years		Over
				or less				5 years
		(in billions)
	Standby letter of credit and financial guarantees	¥	3,774	¥	2,082	¥	1,116	¥	576
	Performance guarantees		2,571		1,766		727		78
	Derivative instruments(1)		68,811		33,281		26,432		9,098
	Liabilities of trust accounts		7,751		6,580		343		828
	Total	¥	82,907	¥	43,709	¥	28,618	¥	10,580
	Note:
	-1	Credit derivatives sold by the MUFG Group are excluded from this presentation.
Maximum Potential Amount Of Future Payments Classified Based Upon Internal Credit Ratings [Table Text Block]	'
				Amount by borrower grade
	At March 31, 2013:	Maximum		Normal		Close		Likely to		Not
		potential/				Watch(1)		become		rated
		Contractual						Bankrupt
		or Notional						or Legally/
		amount						Virtually
								Bankrupt(2)
		(in billions)
	Standby letters of credit and financial guarantees	¥	3,849	¥	3,540	¥	182	¥	11	¥	116
	Performance guarantees		2,214		2,152		43		2		17
	Total	¥	6,063	¥	5,692	¥	225	¥	13	¥	133
				Amount by borrower grade
	At March 31, 2014:	Maximum		Normal		Close		Likely to		Not
		potential/				Watch(1)		become		rated
		Contractual						Bankrupt
		or Notional						or Legally/
		amount						Virtually
								Bankrupt(2)
		(in billions)
	Standby letters of credit and financial guarantees	¥	3,774	¥	3,500	¥	171	¥	9	¥	94
	Performance guarantees		2,571		2,493		53		8		17
	Total	¥	6,345	¥	5,993	¥	224	¥	17	¥	111
	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.
Contractual Amounts With Regard To Other Off-Balance Sheet Instruments [Table Text Block]	'
		2013		2014
		(in billions)
	Commitments to extend credit	¥	66,702	¥	72,240
	Commercial letters of credit		706		855
	Commitments to make investments		94		81
	Other		—		21

Variable_Interest_Entities_Tex1

Variable Interest Entities [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Consolidated VIEs [Member]	'
Assets And Liabilities Of Variable Interest Entities [Table Text Block]	'
	Consolidated VIEs	Consolidated assets
	At March 31, 2013:	Total			Cash and			Interest-earning			Trading			Investment			Loans			All other
					due from			deposits in			account			securities						assets
					banks			other banks			assets
		(in millions)
	Asset-backed conduits	¥	5,641,295		¥	25,520		¥	72,968		¥	966		¥	601,444		¥	4,927,509		¥	12,888
	Investment funds		2,567,049			47,176			18,113			2,322,430			8,643			173			170,514
	Special purpose entities created for structured financing		175,627			1,427			2,188			—			—			156,903			15,109
	Repackaged instruments		56,902			—			—			54,154			—			2,748			—
	Securitization of the MUFG Group’s assets		1,756,940			—			—			—			—			1,720,066			36,874
	Trust arrangements		1,006,961			—			3,601			277			91,707			909,146			2,230
	Others		100,013			295			681			—			85			64,948			34,004
	Total consolidated assets before elimination		11,304,787			74,418			97,551			2,377,827			701,879			7,781,493			271,619
	The amounts eliminated in consolidation		(1,127,690	)		(71,726	)		(71,464	)		(1,237	)		(6	)		(966,616	)		(16,641	)
	Total consolidated assets	¥	10,177,097		¥	2,692		¥	26,087		¥	2,376,590		¥	701,873		¥	6,814,877		¥	254,978
		Consolidated liabilities
		Total			Deposits			Other short-term			Long-term			All other
								borrowings			debt			liabilities
		(in millions)
	Asset-backed conduits	¥	5,645,471		¥	—		¥	4,868,648		¥	330,171		¥	446,652
	Investment funds		232,533			—			1,348			12,246			218,939
	Special purpose entities created for structured financing		173,928			—			5,241			166,810			1,877
	Repackaged instruments		57,452			—			—			56,236			1,216
	Securitization of the MUFG Group’s assets		1,741,837			—			25,000			1,715,823			1,014
	Trust arrangements		1,003,916			1,001,815			—			—			2,101
	Others		99,505			—			64,216			35,143			146
	Total consolidated liabilities before elimination		8,954,642			1,001,815			4,964,453			2,316,429			671,945
	The amounts eliminated in consolidation		(4,251,981	)		—			(3,078,982	)		(1,146,963	)		(26,036	)
	The amount of liabilities with recourse to the general credit of MUFG Group		(3,117,515	)		(1,001,815	)		(1,845,698	)		(2,772	)		(267,230	)
	Liabilities of consolidated VIEs for which creditors or beneficial interest holders do not have recourse to the general credit of the MUFG Group	¥	1,585,146		¥	—		¥	39,773		¥	1,166,694		¥	378,679
	Consolidated VIEs	Consolidated assets
	At March 31, 2014:	Total			Cash and			Interest-earning			Trading			Investment			Loans			All other
					due from			deposits in			account			securities						assets
					banks			other banks			assets
		(in millions)
	Asset-backed conduits	¥	6,202,924		¥	30,484		¥	117,116		¥	1,783		¥	762,103		¥	5,277,749		¥	13,689
	Investment funds		2,433,575			46,198			36,076			2,190,419			10,270			—			150,612
	Special purpose entities created for structured financing		257,874			1,840			2,794			—			—			236,115			17,125
	Repackaged instruments		29,296			—			—			29,296			—			—			—
	Securitization of the MUFG Group’s assets		1,473,901			—			—			—			—			1,439,002			34,899
	Trust arrangements		1,325,602			—			1,528			139			95,339			1,226,221			2,375
	Others		84,882			342			680			—			73			48,914			34,873
	Total consolidated assets before elimination		11,808,054			78,864			158,194			2,221,637			867,785			8,228,001			253,573
	The amounts eliminated in consolidation		-1,428,412			-75,697			-125,036			-1,883			-6			-1,208,348			-17,442
	Total consolidated assets	¥	10,379,642		¥	3,167		¥	33,158		¥	2,219,754		¥	867,779		¥	7,019,653		¥	236,131
		Consolidated liabilities
		Total			Deposits			Other short-term			Long-term			All other
								borrowings			debt			liabilities
		(in millions)
	Asset-backed conduits	¥	6,227,784		¥	—		¥	5,239,304		¥	467,005		¥	521,475
	Investment funds		87,702			—			—			422			87,280
	Special purpose entities created for structured financing		174,055			—			1,993			169,231			2,831
	Repackaged instruments		29,181			—			—			29,000			181
	Securitization of the MUFG Group’s assets		1,452,857			—			23,800			1,428,202			855
	Trust arrangements		1,322,103			1,320,209			—			—			1,894
	Others		84,527			—			48,368			36,025			134
	Total consolidated liabilities before elimination		9,378,209			1,320,209			5,313,465			2,129,885			614,650
	The amounts eliminated in consolidation		(4,196,910	)		—			(2,988,582	)		(1,163,047	)		(45,281	)
	The amount of liabilities with recourse to the general credit of MUFG Group		(3,910,836	)		-1,320,209			(2,280,662	)		—			(309,965	)
	Liabilities of consolidated VIEs for which creditors or beneficial interest holders do not have recourse to the general credit of the MUFG Group	¥	1,270,463		¥	—		¥	44,221		¥	966,838		¥	259,404
Non-consolidated VIEs [Member]	'
Assets And Liabilities Of Variable Interest Entities [Table Text Block]	'
	Non-consolidated VIEs							On-balance sheet assets															On-balance sheet
																							liabilities
	At March 31, 2013:	Total assets			Maximum			Total			Trading			Investment			Loans			All			Total		All other
					exposure						account			securities						other					liabilities
											assets									assets
		(in millions)
	Asset-backed conduits	¥	12,926,458		¥	3,072,591		¥	2,256,903		¥	3,384		¥	363,521		¥	1,889,998		¥	—		¥	—	¥	—
	Investment funds		25,517,222			744,935			634,662			168,580			149,036			317,046			—			1,186		1,186
	Special purpose entities created for structured financing		20,978,132			3,048,178			2,346,557			136,118			85,254			2,124,202			983			466		466
	Repackaged instruments		13,097,513			1,638,067			1,546,726			106,661			1,181,828			258,237			—			—		—
	Trust arrangements		14,866			13,589			12,740			—			—			12,740			—			5,739		5,739
	Others		29,381,902			2,174,939			1,714,409			66,563			286,937			1,353,826			7,083			99		99
	Total	¥	101,916,093		¥	10,692,299		¥	8,511,997		¥	481,306		¥	2,066,576		¥	5,956,049		¥	8,066		¥	7,490	¥	7,490
	Non-consolidated VIEs							On-balance sheet assets															On-balance sheet
																							liabilities
	At March 31, 2014:	Total assets			Maximum			Total			Trading			Investment			Loans			All			Total		All other
					exposure						account			securities						other					liabilities
											assets									assets
		(in millions)
	Asset-backed conduits	¥	16,114,320		¥	3,826,653		¥	2,879,545		¥	1,851		¥	512,835		¥	2,364,858		¥	1		¥	217	¥	217
	Investment funds		24,216,292			844,762			735,423			100,099			300,295			326,860			8,169			—		—
	Special purpose entities created for structured financing		27,811,920			3,305,869			2,586,162			138,023			84,964			2,361,243			1,932			1,788		1,788
	Repackaged instruments		9,106,418			2,132,268			2,034,180			202,209			1,536,859			295,112			—			—		—
	Trust arrangements		26,795			23,680			22,940			—			—			22,940			—			5,471		5,471
	Others		50,444,297			2,720,245			2,113,300			129,020			100,000			1,884,280			—			125		125
	Total	¥	127,720,042		¥	12,853,477		¥	10,371,550		¥	571,202		¥	2,534,953		¥	7,255,293		¥	10,102		¥	7,601	¥	7,601

Commitments_And_Contingent_Lia1

Commitments And Contingent Liabilities [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Future Minimum Rental Commitments For Noncancelable Leases [Table Text Block]	'
		Capitalized			Operating
		leases			leases
		(in millions)
	Fiscal year ending March 31:
	2015	¥	7,640		¥	85,660
	2016		4,561			71,855
	2017		3,271			63,872
	2018		1,640			59,021
	2019		893			53,614
	2020 and thereafter		4,642			390,208
	Total minimum lease payments		22,647		¥	724,230	(1)
	Amount representing interest		(2,528	)
	Present value of minimum lease payments	¥	20,119
	Note:
	-1	One of MUFG’s subsidiaries has entered into non-cancelable operating lease agreements which will commence in April, 2016. The total minimum lease payments of ¥30,247 million under these commitments have been included in the above.

Fees_And_Commissions_Income_Te1

Fees And Commissions Income [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Details Of Fees And Commissions Income [Table Text Block]	'
		2012		2013		2014
		(in millions)
	Trust fees	¥	95,037	¥	92,525	¥	105,721
	Fees on funds transfer and service charges for collections		139,840		137,338		139,974
	Fees and commissions on international business		57,688		58,905		68,273
	Fees and commissions on credit card business		149,946		149,671		157,227
	Service charges on deposits		18,216		16,727		20,451
	Fees and commissions on securities business		128,436		155,983		221,791
	Fees on real estate business		23,610		28,041		34,715
	Insurance commissions		33,686		33,472		39,669
	Fees and commissions on stock transfer agency services		49,283		49,137		49,394
	Guarantee fees		58,393		55,427		52,634
	Fees on investment funds business		126,601		130,006		155,572
	Other fees and commissions		219,227		253,642		248,695
	Total	¥	1,099,963	¥	1,160,874	¥	1,294,116

Trading_Account_Profits_And_Lo1

Trading Account Profits And Losses [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Net Trading Gains (Losses) [Table Text Block]	'
		2012			2013			2014
		(in millions)
	Interest rate and other derivative contracts	¥	77,698		¥	(82,684	)	¥	(84,408	)
	Trading account securities, excluding derivatives		589,587			652,960			50,522
	Trading account profits (losses)—net		667,285			570,276			(33,886	)
	Foreign exchange derivative contracts(1)		(94,853	)		(94,223	)		(52,737	)
	Net trading gains (losses)	¥	572,432		¥	476,053		¥	(86,623	)
	Note:
	-1	Gains (losses) on foreign exchange derivative contracts are included in Foreign exchange gains (losses)—net in the accompanying consolidated statements of income. Foreign exchange gains (losses)—net in the accompanying consolidated statements of income are also comprised of foreign exchange gains (losses) other than derivative contracts and foreign exchange gains (losses) related to the fair value option.

Business_Segments_Text_Block_T

Business Segments [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Financial Information By Business Segment [Table Text Block]	'
		Integrated			Integrated			Integrated			Integrated Global Business						Global			Other			Total
		Retail			Corporate			Trust			Group						Markets
		Banking			Banking			Assets
		Business			Business			Business
		Group			Group			Group			Other		MUAH		Total
											than
											MUAH
		(in billions)
	Fiscal year ended March 31, 2012:
	Net revenue:	¥	1,227.10		¥	870.7		¥	140.1		¥	364.6	¥	252	¥	616.6	¥	727.9		¥	(1.3	)	¥	3,581.10
	BTMU and MUTB:		583			778.2			55.7			286.1		—		286.1		645.8			0.6			2,349.40
	Net interest income		467.7			402.8			—			128.2		—		128.2		309			39.6			1,347.30
	Net fees		105.6			303.1			55.7			122.6		—		122.6		(16.4	)		(27.3	)		543.3
	Other		9.7			72.3			—			35.3		—		35.3		353.2			(11.7	)		458.8
	Other than BTMU and		644.1			92.5			84.4			78.5		252		330.5		82.1			(1.9	)		1,231.70
	MUTB(1)
	Operating expenses		915.8			440.5			87.3			196.5		173		369.5		128.1			161.4			2,102.60
	Operating profit (loss)	¥	311.3		¥	430.2		¥	52.8		¥	168.1	¥	79	¥	247.1	¥	599.8		¥	(162.7	)	¥	1,478.50
	Fiscal year ended March 31, 2013:
	Net revenue:	¥	1,207.80		¥	864		¥	138.8		¥	465.4	¥	288.5	¥	753.9	¥	763		¥	(10.8	)	¥	3,716.70
	BTMU and MUTB:		561.5			767.9			55.4			358.4		—		358.4		655.7			(8.6	)		2,390.30
	Net interest income		428.1			382.2			—			181.5		—		181.5		262.1			64.1			1,318.00
	Net fees		124.8			312.6			55.4			141.6		—		141.6		(19.2	)		(32.8	)		582.4
	Other		8.6			73.1			—			35.3		—		35.3		412.8			(39.9	)		489.9
	Other than BTMU and		646.3			96.1			83.4			107		288.5		395.5		107.3			(2.2	)		1,326.40
	MUTB(1)
	Operating expenses		917.3			434.4			88.3			246.8		205.4		452.2		142.5			174.4			2,209.10
	Operating profit (loss)	¥	290.5		¥	429.6		¥	50.5		¥	218.6	¥	83.1	¥	301.7	¥	620.5		¥	(185.2	)	¥	1,507.60
	Fiscal year ended March 31, 2014:
	Net revenue:	¥	1,290.60		¥	924.5		¥	159.2		¥	567.9	¥	375.9	¥	943.8	¥	568.6		¥	(13.6	)	¥	3,873.10
	BTMU and MUTB:		569.9			801			65.5			443.1		—		443.1		411.6			(4.4	)		2,286.70
	Net interest income		398.1			374.8			—			235.8		—		235.8		219.5			79.6			1,307.80
	Net fees		163.5			337.5			65.5			164.7		—		164.7		(23.1	)		(62.0	)		646.1
	Other		8.3			88.7			—			42.6		—		42.6		215.2			(22.0	)		332.8
	Other than BTMU and		720.7			123.5			93.7			124.8		375.9		500.7		157			(9.2	)		1,586.40
	MUTB(1)
	Operating expenses		961.9			438.4			94.4			299.5		266.9		566.4		176.5			172.4			2,410.00
	Operating profit (loss)	¥	328.7		¥	486.1		¥	64.8		¥	268.4	¥	109	¥	377.4	¥	392.1		¥	(186.0	)	¥	1,463.10
	Note:
	-1	Includes MUFG and its subsidiaries other than BTMU and MUTB.
Reconciliation Of Operating Profit (Loss) From Segments To Consolidated Statements Of Income [Table Text Block]	'
		2012			2013			2014
		(in billions)
	Operating profit:	¥	1,479		¥	1,508		¥	1,463
	Credit (provision) for credit losses		(224	)		(145	)		106
	Trading account profits (losses)—net		372			285			(394	)
	Equity investment securities gains (losses)—net		(95	)		(22	)		170
	Debt investment securities losses—net		(153	)		(153	)		(6	)
	Foreign exchange gains (losses)—net		21			(53	)		(48	)
	Equity in earnings (losses) of equity method investees—net		(499	)		60			111
	Impairment of goodwill		—			—			(8	)
	Impairment of intangible assets		(31	)		(3	)		—
	Other—net		(20	)		(61	)		26
	Income before income tax expense	¥	850		¥	1,416		¥	1,420

Foreign_Activities_Text_Block_

Foreign Activities [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Estimated Financial Information By Geographic Areas [Table Text Block]	'
		Domestic		Foreign									Total
		Japan		United			Europe		Asia/Oceania		Other
				States of					excluding		areas(1)
				America					Japan
		(in millions)
	Fiscal year ended March 31, 2012:
	Total revenue(2)(4)	¥	2,936,875	¥	192,775		¥	290,482	¥	450,651	¥	165,749	¥	4,036,532
	Total expense(3)		2,438,729		284,557			151,077		223,253		88,974		3,186,590
	Income (loss) before income tax expense (benefit)		498,146		(91,782	)		139,405		227,398		76,775		849,942
	Net income (loss) attributable to Mitsubishi UFJ Financial Group		163,334		(119,829	)		113,593		192,753		66,380		416,231
	Total assets at end of fiscal year		148,702,461		28,457,027			18,620,484		12,410,540		7,012,002		215,202,514
	Fiscal year ended March 31, 2013:
	Total revenue(2)	¥	3,016,008	¥	426,377		¥	256,495	¥	585,474	¥	211,076	¥	4,495,430
	Total expense(3)		2,248,856		327,565			160,061		268,349		74,728		3,079,559
	Income before income tax expense		767,152		98,812			96,434		317,125		136,348		1,415,871
	Net income attributable to Mitsubishi UFJ Financial Group		499,125		95,565			78,442		274,951		121,041		1,069,124
	Total assets at end of fiscal year		151,999,696		30,730,705			23,224,502		15,938,673		8,665,700		230,559,276
	Fiscal year ended March 31, 2014:
	Total revenue(2)	¥	3,110,050	¥	218,953		¥	155,022	¥	569,018	¥	290,321	¥	4,343,364
	Total expense(3)		1,952,250		426,084			143,417		315,203		85,967		2,922,921
	Income (loss) before income tax expense (benefit)		1,157,800		(207,131	)		11,605		253,815		204,354		1,420,443
	Net income (loss) attributable to Mitsubishi UFJ Financial Group		859,846		(131,566	)		6,484		149,417		131,212		1,015,393
	Total assets at end of fiscal year		158,809,701		40,625,000			22,352,446		22,312,805		9,561,125		253,661,077
	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	For the fiscal year ended March 31, 2012, Total revenue of United States of America includes an other-than-temporary impairment loss of Morgan Stanley’s common stock. See Note 2 for further details of an other-than-temporary impairment loss of Morgan Stanley’s common stock.
Analysis Of Certain Asset And Liability Accounts Related To Foreign Activities [Table Text Block]	'
		2013		2014
		(in millions)
	Cash and due from banks	¥	676,833	¥	804,617
	Interest-earning deposits in other banks		3,830,923		9,020,949
	Total	¥	4,507,756	¥	9,825,566
	Trading account assets	¥	28,450,804	¥	28,319,251
	Investment securities	¥	6,960,616	¥	4,749,265
	Loans—net of unearned income, unamortized premiums and deferred loan fees	¥	29,174,592	¥	39,763,643
	Deposits	¥	29,317,297	¥	40,648,813
	Funds borrowed:
	Call money, funds purchased	¥	254,796	¥	201,606
	Payables under repurchase agreements		6,857,970		8,995,939
	Payables under securities lending transactions		77,428		96,202
	Other short-term borrowings		2,531,308		3,698,004
	Long-term debt		2,847,585		3,376,761
	Total	¥	12,569,087	¥	16,368,512
	Trading account liabilities	¥	7,012,658	¥	5,876,702

Fair_Value_Text_Block_Tables

Fair Value [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Assets And Liabilities Measured At Fair Value By Level On Recurring Basis [Table Text Block]	'
		March 31, 2013
		Level 1			Level 2			Level 3				Fair Value
		(in millions)
	Assets
	Trading account assets:
	Trading securities(1)	¥	15,613,802		¥	9,935,591		¥	631,113			¥	26,180,506
	Debt securities
	Japanese national government and Japanese government agency bonds		4,420,457			182,098			—				4,602,555
	Japanese prefectural and municipal bonds		—			129,974			—				129,974
	Foreign governments and official institutions bonds		9,983,023			2,144,396			96,255				12,223,674
	Corporate bonds		—			2,729,892			77,089				2,806,981
	Residential mortgage-backed securities		—			3,220,036			9,881				3,229,917
	Asset-backed securities		—			80,447			396,071				476,518
	Other debt securities		—			11,597			29,526				41,123
	Commercial paper		—			1,129,508			—				1,129,508
	Equity securities(2)		1,210,322			307,643			22,291				1,540,256
	Trading derivative assets		52,242			14,520,461			73,175				14,645,878
	Interest rate contracts		6,770			11,175,763			31,794				11,214,327
	Foreign exchange contracts		511			3,171,002			21,131				3,192,644
	Equity contracts		34,062			53,874			15,735				103,671
	Commodity contracts		10,899			59,075			3,628				73,602
	Credit derivatives		—			60,747			887				61,634
	Investment securities:
	Securities available-for-sale		52,347,228			6,024,714			472,127				58,844,069
	Debt securities
	Japanese national government and Japanese government agency bonds		48,069,738			1,410,216			—				49,479,954
	Japanese prefectural and municipal bonds		—			217,075			—				217,075
	Foreign governments and official institutions bonds		319,176			248,398			148,722				716,296
	Corporate bonds		—			1,830,100			92,846				1,922,946
	Residential mortgage-backed securities		—			1,202,128			21,492				1,223,620
	Commercial mortgage-backed securities		—			269,343			39				269,382
	Asset-backed securities		—			708,428			102,250				810,678
	Other debt securities		—			—			106,714				106,714
	Marketable equity securities		3,958,314			139,026			64				4,097,404
	Other investment securities		—			1,105			24,795				25,900
	Others(3)(4)		455,012			134,569			8,418				597,999
	Total	¥	68,468,284		¥	30,616,440		¥	1,209,628			¥	100,294,352
	Liabilities
	Trading account liabilities:
	Trading securities sold, not yet purchased	¥	72,756		¥	6,057		¥	—			¥	78,813
	Trading derivative liabilities		124,431			14,672,597			93,641				14,890,669
	Interest rate contracts		43,946			11,126,837			34,044				11,204,827
	Foreign exchange contracts		274			3,390,222			37,937				3,428,433
	Equity contracts		67,551			49,312			14,354				131,217
	Commodity contracts		12,660			46,753			4,432				63,845
	Credit derivatives		—			59,473			2,874				62,347
	Obligation to return securities received as collateral		2,887,425			147,122			—				3,034,547
	Others(5)		—			431,773			121,932				553,705
	Total	¥	3,084,612		¥	15,257,549		¥	215,573			¥	18,557,734
		March 31, 2014
		Level 1			Level 2			Level 3				Fair Value
		(in millions)
	Assets
	Trading account assets:
	Trading securities(1)	¥	20,102,994		¥	8,075,408		¥	658,917			¥	28,837,319
	Debt securities
	Japanese national government and Japanese government agency bonds		5,688,374			235,944			—				5,924,318
	Japanese prefectural and municipal bonds		—			89,017			—				89,017
	Foreign governments and official institutions bonds		13,133,023			1,784,478			15,450				14,932,951
	Corporate bonds		—			3,160,057			132,518				3,292,575
	Residential mortgage-backed securities		—			1,483,547			11,601				1,495,148
	Asset-backed securities		—			215,686			439,664				655,350
	Other debt securities		—			20,285			32,565				52,850
Commercial paper		—			794,868			—				794,868
Equity securities(2)		1,281,597			291,526			27,119				1,600,242
Trading derivative assets		90,740			11,640,992			77,224				11,808,956
Interest rate contracts		22,677			8,565,213			28,202				8,616,092
Foreign exchange contracts		507			2,909,201			6,471				2,916,179
Equity contracts		50,425			65,827			32,434				148,686
Commodity contracts		17,131			43,826			10,102				71,059
Credit derivatives		—			56,925			15				56,940
Investment securities:
Securities available for sale		45,302,514			6,038,450			544,688				51,885,652
Debt securities
Japanese national government and Japanese government agency bonds		39,852,612			1,736,397			—				41,589,009
Japanese prefectural and municipal bonds		—			203,131			—				203,131
Foreign governments and official institutions bonds		794,822			324,952			151,647				1,271,421
Corporate bonds		—			1,485,280			75,849				1,561,129
Residential mortgage-backed securities		—			961,337			19,258				980,595
Commercial mortgage-backed securities		—			197,034			3,112				200,146
Asset-backed securities		—			948,168			109,876				1,058,044
Other debt securities		—			—			184,946				184,946
Marketable equity securities		4,655,080			182,151			—				4,837,231
Other investment securities		—			—			26,201				26,201
Others(3)(4)		489,356			28,169			5,598				523,123
Total	¥	65,985,604		¥	25,783,019		¥	1,312,628			¥	93,081,251
Liabilities
Trading account liabilities:
Trading securities sold, not yet purchased	¥	189,524		¥	4,719		¥	—			¥	194,243
Trading derivative liabilities		108,059			11,611,316			68,360				11,787,735
Interest rate contracts		25,293			8,481,947			14,526				8,521,766
Foreign exchange contracts		3,997			2,981,272			13,509				2,998,778
Equity contracts		57,464			57,892			28,239				143,595
Commodity contracts		21,305			30,029			10,724				62,058
Credit derivatives		—			60,176			1,362				61,538
Obligation to return securities received as collateral		3,914,441			57,013			—				3,971,454
Others(5)		—			612,124			92,867				704,991
Total	¥	4,212,024		¥	12,285,172		¥	161,227			¥	16,658,423
Notes:
-1	Includes securities measured under the fair value option.
-2	Includes investments valued at net asset value of ¥38,959 million and ¥28,922 million at March 31, 2013 and 2014, respectively. The unfunded commitments related to these investments at March 31, 2013 and 2014 were ¥8,644 million and ¥11,373 million, respectively. These investments were mainly hedge funds.
-3	Mainly comprised of securities received as collateral that may be sold or repledged under securities lending transactions, money in trust for segregating cash deposited by customers on security transactions and derivatives designated as hedging instruments.
-4	Includes investments valued at net asset value of real estate funds, hedge funds and private equity funds, whose fair values at March 31, 2013 were ¥4,276 million, ¥3,189 million and ¥2,943 million, respectively, and those at March 31, 2014 were ¥1,669 million, ¥1,232 million and ¥2,441 million, respectively. The amounts of unfunded commitments related to these real estate funds, hedge funds and private equity funds at March 31, 2013 were nil, ¥1,221 million and ¥2,028 million, respectively, and those at March 31, 2014 were nil, ¥104 million and ¥1,871 million, respectively.
-5	Includes other short-term borrowings, long-term debt, bifurcated embedded derivatives carried at fair value and derivative liabilities designated as hedging instruments.
Transfers Between Level 1 And Level 2 [Table Text Block]	'
		Fiscal years ended March 31,
		2013						2014
		Transfers out of			Transfers out of			Transfers out of				Transfers out of
		Level 1			Level 2			Level 1				Level 2
		into Level 2(1)			into Level 1(1)			into Level 2(1)				into Level 1(1)
		(in millions)
	Assets
	Trading account assets:
	Trading securities
	Debt securities
	Japanese national government and Japanese government agency bonds	¥	—		¥	10,717		¥	7,420			¥	—
	Foreign governments and official institutions bonds		—			1,289			—				—
	Residential mortgage-backed securities		3,247,522			—			—				—
	Equity securities		5,308			—			13,762				—
	Investment securities:
	Securities available-for-sale
	Debt securities
	Foreign governments and official institutions bonds		413,515			—			—				—
	Marketable equity securities		19,026			13,737			19,011				13,252
	Note:
	-1	All transfers between Level 1 and Level 2 were assumed to have occurred at the beginning of the first-half or the second-half of the fiscal year.
Reconciliation Of Assets And Liabilities Measured At Fair Value On Recurring Basis Using Level 3 Inputs [Table Text Block]	'
		March 31,			Total gains (losses)							Purchases			Issues			Sales			Settlements			Transfers			Transfers			March 31,			Change in
		2012			for the period																			into			out of			2013			unrealized
																								Level 3(5)			Level 3(5)						gains (losses)
																																	included in
																																	earnings for
																																	assets and
																																	liabilities
																																	still held at
																																	March 31,
					Included			Included																									2013
					in			in other
					earnings			comprehensive
								income
		(in millions)
	Assets
	Trading account assets:
	Trading securities(1)	¥	1,076,657		¥	77,239	(2)	¥	—			¥	518,698		¥	—		¥	(360,580	)	¥	(378,767	)	¥	49,521		¥	(351,655	)	¥	631,113		¥	64,764	(2)
	Debt securities
	Foreign governments and official institutions bonds		149,731			19,142			—				179,907			—			(205,581	)		(24,043	)		23,202			(46,103	)		96,255			11,831
	Corporate bonds		501,895			3,354			—				55,147			—			(2,089	)		(223,088	)		26,315	(6)		(284,445	)(6)(7)		77,089			5,206
	Residential mortgage-backed securities		10,124			1,677			—				12,050			—			(12,042	)		(1,928	)		—			—			9,881			1,599
	Asset-backed securities		395,198			44,365			—				239,598			—			(132,275	)		(129,708	)		—			(21,107	)		396,071			41,748
	Other debt securities		—			4,358			—				25,168			—			—			—			—			—			29,526			4,358
	Equity securities		19,709			4,343			—				6,828			—			(8,593	)		—			4			—			22,291			22
	Trading derivatives—net		(27,458	)		20,344	(2)		(5,408	)			1,379			(2,775	)		—			(24,964	)		29,392			(10,976	)		(20,466	)		17,466	(2)
	Interest rate contracts—net		(44,904	)		42,457			233				2			(4	)		—			(8,468	)		8,431			3			(2,250	)		38,552
	Foreign exchange contracts—net		23,907			(28,164	)		(5,517	)			448			(1,852	)		—			(16,150	)		21,644			(11,122	)		(16,806	)		(27,532	)
	Equity contracts—net		(7,019	)		9,275			10				444			(434	)		—			(833	)		(62	)		—			1,381			9,449
	Commodity contracts—net		162			(438	)		(19	)			485			(485	)		—			(52	)		(600	)		143			(804	)		(140	)
	Credit derivatives—net		396			(2,786	)		(115	)			—			—			—			539			(21	)		—			(1,987	)		(2,863	)
	Investment securities:
	Securities available-for-sale		1,673,387			3,218	(3)		16,083				230,505			—			(14,809	)		(211,058	)		113,491			(1,338,690	)		472,127			(4,380	)(3)
	Debt securities
	Foreign governments and official institutions bonds		130,720			—			2,582				23,158			—			(31	)		(7,707	)		—			—			148,722			—
	Corporate bonds		1,460,489			1,629			(1,855	)			11,465			—			(12,843	)		(140,840	)		113,491	(6)		(1,338,690	)(6)(7)		92,846			(4,370	)
	Residential mortgage-backed securities		22,351			(27	)		100				4,500			—			—			(5,432	)		—			—			21,492			(1	)
	Commercial mortgage-backed securities		3,802			1,090			(126	)			—			—			(1,855	)		(2,872	)		—			—			39			—
	Asset-backed securities		54,947			606			8,400				85,469			—			—			(47,172	)		—			—			102,250			30
	Other debt securities		964			(84	)		6,980				105,889			—			—			(7,035	)		—			—			106,714			(43	)
	Marketable equity securities		114			4			2				24			—			(80	)		—			—			—			64			4
	Other investment securities		32,321			(505	)(4)		—				875			—			(3,092	)		(16	)		—			(4,788	)		24,795			(618	)(4)
	Others		10,368			(597	)(4)		—				637			—			(1,990	)		—			—			—			8,418			129	(4)
	Total	¥	2,765,275		¥	99,699		¥	10,675			¥	752,094		¥	(2,775	)	¥	(380,471	)	¥	(614,805	)	¥	192,404		¥	(1,706,109	)	¥	1,115,987		¥	77,361
	Liabilities
	Others		43,536			(74,957	)(4)		(20,590	)			239			2,432			—			(20,907	)		1,181			(96	)		121,932			(61,188	)(4)
	Total	¥	43,536		¥	(74,957	)	¥	(20,590	)		¥	239		¥	2,432		¥	—		¥	(20,907	)	¥	1,181		¥	(96	)	¥	121,932		¥	(61,188	)
		March 31,			Total gains (losses)										Issues			Sales			Settlements			Transfers			Transfers			March 31,			Change in
		2013			for the period																			into			out of			2014			unrealized
																								Level 3(5)			Level 3(5)						gains (losses)
																																	included in
																																	earnings for
																																	assets and
																																	liabilities
																																	still held at
																																	March 31,
					Included			Included				Purchases																					2014
					in			in other
					earnings			comprehensive
								income
		(in millions)
	Assets
	Trading account assets:
	Trading securities(1)	¥	631,113		¥	50,809	(2)	¥	—			¥	499,143		¥	—		¥	(302,363	)	¥	(173,816	)	¥	12,574		¥	(58,543	)	¥	658,917		¥	36,144	(2)
Debt securities
Foreign governments and official institutions bonds		96,255			4,905			—				65,828			—			(72,059	)		(32,354	)		2,414			(49,539	)		15,450			232
Corporate bonds		77,089			4,916			—				100,011			—			(43,326	)		(7,242	)		10,074	(6)		(9,004	)(6)		132,518			4,922
Residential mortgage-backed securities		9,881			1,187			—				83,179			—			(81,698	)		(948	)		—			—			11,601			702
Asset-backed securities		396,071			32,794			—				245,342			—			(101,271	)		(133,272	)		—			—			439,664			27,252
Other debt securities		29,526			3,039			—				—			—			—			—			—			—			32,565			3,039
Equity securities		22,291			3,968			—				4,783			—			(4,009	)		—			86			—			27,119			(3	)
Trading derivatives—net		(20,466	)		30,791	(2)		(3,463	)			4,732			(4,889	)		—			(2,252	)		15,116			(10,705	)		8,864			15,146	(2)
Interest rate contracts—net		(2,250	)		19,554			714				878			—			—			(4,762	)		6,712			(7,170	)		13,676			14,695
Foreign exchange contracts—net		(16,806	)		9,615			(3,835	)			770			(1,215	)		—			(431	)		8,432			(3,568	)		(7,038	)		460
Equity contracts—net		1,381			4,125			34				1,323			(1,323	)		—			(1,345	)		—			—			4,195			202
Commodity contracts—net		(804	)		109			(10	)			1,761			(2,351	)		—			668			(28	)		33			(622	)		809
Credit derivatives —net		(1,987	)		(2,612	)		(366	)			—			—			—			3,618			—			—			(1,347	)		(1,020	)
Investment securities:
Securities available-for -sale		472,127			3,950	(3)		51,538				256,776			—			(10,961	)		(218,806	)		4,744			(14,680	)		544,688			(869	)(3)
Debt securities
Foreign governments and official institutions bonds		148,722			—			3,393				5,574			—			—			(6,042	)		—			—			151,647			—
Corporate bonds		92,846			4,059			(51	)			5,046			—			(1,367	)		(14,772	)		4,744	(6)		(14,656	)(6)		75,849			(873	)
Residential mortgage-backed securities		21,492			3			83				3,015			—			(609	)		(4,726	)		—			—			19,258			—
Commercial mortgage-backed securities		39			—			(153	)			3,265			—			(39	)		—			—			—			3,112			—
Asset-backed securities		102,250			(120	)		17,636				178,735			—			(8,751	)		(179,874	)		—			—			109,876			4
Other debt securities		106,714			—			30,630				61,118			—			(195	)		(13,321	)		—			—			184,946			—
Marketable equity securities		64			8			—				23			—			—			(71	)		—			(24	)		—			—
Other investment securities		24,795			1,751	(4)		14				2,879			—			(2,126	)		(2	)		—			(1,110	)		26,201			1,258	(4)
Others		8,418			432	(4)		—				336			—			(3,588	)		—			—			—			5,598			163	(4)
Total	¥	1,115,987		¥	87,733		¥	48,089			¥	763,866		¥	(4,889	)	¥	(319,038	)	¥	(394,876	)	¥	32,434		¥	(85,038	)	¥	1,244,268		¥	51,842
Liabilities
Others		121,932			(19,097	)(4)		(24,145	)			—			302			—			(28,498	)		(10	)		(44,101	)		92,867			(10,707	)(4)
Total	¥	121,932		¥	(19,097	)	¥	(24,145	)		¥	—		¥	302		¥	—		¥	(28,498	)	¥	(10	)	¥	(44,101	)	¥	92,867		¥	(10,707	)
Notes:
-1	Includes Trading securities under fair value option.
-2	Included in Trading account profits (losses)—net and in Foreign exchange gains (losses)—net.
-3	Included in Investment securities gains—net.
-4	Included in Trading account profits (losses)—net.
-5	All transfers out of Level 3 or into Level 3 were assumed to have occurred at the beginning of the first-half or the second-half of the fiscal year.
-6	Transfers out of and transfers into Level 3 for corporate bonds were due principally to changes in the impact of unobservable credit worthiness inputs of the private placement bonds.
-7	Certain private placement bonds issued by non-public companies which are accounted for as trading account securities amounted to ¥223,938 million and securities available-for-sale amounted to ¥1,209,272 million were transferred from Level 3 to Level 2 during the fiscal year ended March 31, 2013. These transfers were due to change in the significance of the unobservable inputs used to measure fair value of the private placement bonds.
Quantitative Information About Level 3 Fair Value Measurements [Table Text Block]	'
	March 31, 2013	Fair value(1)			Valuation technique		Significant unobservable inputs	Range		Weighted
										Average(2)
		(in millions)
	Assets
	Trading securities and Investment securities:
	Foreign governments and official institutions bonds							32.5%~51.9%			36	%
		¥	33,649		Monte Carlo method		Correlation between interest rate and foreign exchange rate
							Correlation between interest rates	41.3%~63.3%			62.1	%
			19,699		Return on equity method		Probability of default	0.0%~8.0%			0.7	%
							Recovery rate	25.0%~90.0%			56.2	%
							Market-required return on capital	15.0%~17.0%			15.7	%
	Corporate bonds		62,788		Discounted cash flow		Probability of default	0.1%~14.2%			4.2	%
							Recovery rate	15.0%~100.0%			44.9	%
			1,986		Monte Carlo method		Correlation between interest rate and foreign exchange rate	32.5%~37.9%			35.2	%
							Correlation between interest rates	63.30%			63.3	%
			9,059		Internal model		Liquidity premium	1.5%~2.5%			2.3	%
	Residential mortgage-backed securities, Commercial mortgage-backed securities and Asset-backed securities		72,640		Discounted cash flow		Discount factor	1.0%~1.2%			1.1	%
							Prepayment rate	6.2%~14.8%			8.8	%
							Probability of default	0.0%~5.2%			4.9	%
							Recovery rate	0.0%~76.0%			65.4	%
			289,398		Internal model		Asset correlations	11.0%~14.0%			13.5	%
							Discount factor	1.0%~4.8%			1.5	%
							Prepayment rate	3.9%~38.3%			32.6	%
							Probability of default	0.0%~84.6%			—	(3)
							Recovery rate	53.6%~69.8%			67.5	%
	Other debt securities		29,526		Discounted cash flow		Liquidity premium	0.5%~0.8%			0.8	%
			104,957		Return on equity method		Probability of default	0.0%~8.0%			0.6	%
							Recovery rate	25.0%~90.0%			64.8	%
							Market-required return on capital	15.0%~17.0%			16.5	%
	March 31, 2013	Fair value(1)			Valuation technique			Significant unobservable inputs		Range
		(in millions)
	Trading derivatives—net:
	Interest rate contracts—net		-2,533			Option model		Probability of default			0.3	%~12.5%
								Correlation between interest rates			(0.1	)%~97.6%
								Correlation between interest rate and foreign exchange rate			32.5	%~60.2%
								Recovery rate			40	%~51.0%
								Volatility			29.1	%~58.3%
								Prepayment rate			0	%~2.3%
	Foreign exchange contracts—net		(16,806	)		Option model		Probability of default			0.4	%~14.2%
								Correlation between interest rates			28.2	%~80.6%
								Correlation between interest rate and foreign exchange rate			22.2	%~66.3%
								Correlation between underlying assets			44.1	%~82.8%
								Recovery rate			40	%~51.0%
	Equity contracts—net		1,381			Option model		Correlation between interest rate and equity			10.6	%~52.0%
	Credit derivative contracts—net		(1,987	)		Option model		Recovery rate			20	%~36.8%
								Correlation between underlying assets			11.6	%~88.2%
	March 31, 2014	Fair value(1)			Valuation technique		Significant unobservable inputs	Range		Weighted
										Average(2)
		(in millions)
	Assets
	Trading securities and Investment securities:
	Foreign governments and official institutions bonds	¥	6,876		Monte Carlo method		Correlation between interest rate and foreign exchange rate	32.6%~48.3%			37.3	%
							Correlation between interest rates	42.1%~59.8%			58.1	%
			23,983		Return on equity method		Probability of default	0.3%~1.9%			0.9	%
							Recovery rate	60.0%~80.0%			73	%
							Market-required return on capital	8.0%~10.0%			9.4	%
	Corporate bonds		126,101		Discounted cash flow		Probability of default	0.1%~14.0%			0.9	%
							Recovery rate	14.0%~68.4%			40.7	%
			269		Monte Carlo method		Correlation between interest rate and foreign exchange rate	32.6%~44.6%			36.9	%
							Correlation between interest rates	52.2%~59.8%			59.5	%
			9,064		Internal model		Liquidity premium	1.5%~2.5%			2.3	%
	Residential mortgage-backed securities, Commercial mortgage-backed securities and Asset-backed securities		90,420		Discounted cash flow		Probability of default	4.6%~5.1%			5	%
							Recovery rate	65.0%~76.0%			68	%
		430,386		Internal model		Asset correlations	11.0%~14.0%			13.7	%
						Discount factor	1.5%~5.8%			1.9	%
						Prepayment rate	4.5%~44.8%			40.9	%
						Probability of default	0.0%~88.8%			—	(3)
						Recovery rate	54.5%~79.2%			77.7	%
Other debt securities		32,565		Discounted cash flow		Liquidity premium	0.6%~0.8%			0.8	%
		182,613		Return on equity method		Probability of default	0.0%~25.0%			0.7	%
						Recovery rate	25.0%~90.0%			66.9	%
						Market-required return on capital	8.0%~10.0%			9.7	%
March 31, 2014	Fair value(1)			Valuation technique			Significant unobservable inputs		Range
	(in millions)
Trading derivatives—net:
Interest rate contracts—net		12,366			Option model		Probability of default			0	%~14.0%
							Correlation between interest rates			22.8	%~99.4%
							Correlation between interest rate and foreign exchange rate			31.2	%~48.3%
							Recovery rate			40	%~47.0%
							Volatility			27.1	%~39.5%
Foreign exchange contracts—net		(7,038	)		Option model		Probability of default			0.1	%~14.0%
							Correlation between interest rates			38.8	%~78.7%
							Correlation between interest rate and foreign exchange rate			31.2	%~58.7%
							Correlation between underlying assets			49.9	%~85.0%
							Recovery rate			40	%~47.0%
Equity contracts—net		4,548			Option model		Correlation between interest rate and equity			24.9	%~49.0%
Credit derivative contracts—net		(1,347	)		Option model		Recovery rate			37	%~37.0%
							Correlation between underlying assets			11.4	%~87.3%
Notes:
-1	The fair value as of March 31, 2013 and 2014 excludes the fair value of investments valued using vendor prices.
-2	Weighted averages are calculated by weighting each input by the relative fair value of the respective financial instruments.
-3	See “Probability of default” in “Sensitivity to and range of unobservable inputs”.
Carrying Value of Assets Measured At Fair Value On Nonrecurring Basis By Level [Table Text Block]	'
		March 31, 2013													March 31, 2014
		Level 1			Level 2			Level 3				Total			Level 1			Level 2			Level 3			Total
												carrying value												carrying value
		(in millions)
	Assets
	Investment securities(1)	¥	—		¥	—		¥	6,466			¥	6,466		¥	—		¥	—		¥	5,469		¥	5,469
	Loans		11,757			18,236			351,584				381,577			11,510			15,834			303,757			331,101
	Loans held for sale		—			—			4,104				4,104			—			549			6,890			7,439
	Collateral dependent loans		11,757			18,236			347,480				377,473			11,510			15,285			296,867			323,662
	Premises and equipment		—			—			8,938				8,938			—			—			6,264			6,264
	Intangible assets		—			—			549				549			—			—			228			228
	Other assets		17,105			—			16,340				33,445			15,138			60,833			10,161			86,132
	Investments in equity method investees(1)		17,105			—			11,751				28,856			15,138			60,833			7,902			83,873
	Other		—			—			4,589				4,589			—			—			2,259			2,259
	Total	¥	28,862		¥	18,236		¥	383,877			¥	430,975		¥	26,648		¥	76,667		¥	325,879		¥	429,194
	Note:
	-1	Includes investments valued at net asset value of ¥4,354 million and ¥3,483 million at March 31, 2013 and 2014, respectively. The unfunded commitments related to these investments are ¥1,603 million and ¥864 million at March 31, 2013 and 2014, respectively. These investments are private equity funds.
Losses (Gains) Recorded As A Result Of Nonrecurring Changes In Fair Value [Table Text Block]	'
		Losses for
		the fiscal year ended
		March 31,
		2013			2014
		(in millions)
	Investment securities	¥	2,387		¥	4,113
	Loans		92,438			58,660
	Loans held for sale		380			106
	Collateral dependent loans		92,058			58,554
	Premises and equipment		5,536			13,899
	Intangible assets		3,378			312
	Goodwill		—			7,792
	Other assets		16,820			33,905
	Investments in equity method investees		14,635			32,824
	Other		2,185			1,081
	Total	¥	120,559		¥	118,681
Gains (Losses) Related To Instruments For Which Fair Value Option Was Elected [Table Text Block]	'
		For the fiscal years ended March 31,
		2013										2014
		Trading			Foreign			Total				Trading			Foreign			Total
		account			exchange			changes in				account			exchange			changes in
		profits (losses)			gains (losses)			fair value				profits (losses)			gains (losses)			fair value
		(in millions)
	Financial assets:
	Receivables under resale agreements(1)	¥	(1,436	)	¥	—		¥	(1,436	)		¥	—		¥	—		¥	—
	Trading account securities		311,827			2,185,903			2,497,730				(225,985	)		2,017,311			1,791,326
	Other assets		(469	)		—			(469	)			(531	)		—			(531	)
	Total	¥	309,922		¥	2,185,903		¥	2,495,825			¥	(226,516	)	¥	2,017,311		¥	1,790,795
	Financial liabilities:
	Other short-term borrowings(1)	¥	1,542		¥	—		¥	1,542			¥	4,064		¥	—		¥	4,064
	Long-term debt(1)		22,097			—			22,097				87,877			—			87,877
	Total	¥	23,639		¥	—		¥	23,639			¥	91,941		¥	—		¥	91,941
	Note:
	-1	Change in value attributable to the instrument-specific credit risk related to those financial assets and liabilities are not material.
Differences Between Aggregate Fair Value And Aggregate Remaining Contractual Principal Balance Outstanding [Table Text Block]	'
		2013										2014
		Remaining			Fair value			Fair value				Remaining			Fair value			Fair value
		aggregate						over (under)				aggregate						over (under)
		contractual						remaining				contractual						remaining
		amounts						aggregate				amounts						aggregate
		outstanding						contractual				outstanding						contractual
								amounts										amounts
								outstanding										outstanding
		(in millions)
	Financial assets:
	Other assets	¥	3,000		¥	3,006		¥	6			¥	2,000		¥	2,000		¥	—
	Total	¥	3,000		¥	3,006		¥	6			¥	2,000		¥	2,000		¥	—
	Financial liabilities:
	Long-term debt	¥	650,382		¥	564,845		¥	(85,537	)		¥	728,385		¥	687,927		¥	(40,458	)
	Total	¥	650,382		¥	564,845		¥	(85,537	)		¥	728,385		¥	687,927		¥	(40,458	)
Summary Of Carrying Amounts And Estimated Fair Values Of Financial Instruments Not Carried At Fair Value On Balance Sheet By Level [Table Text Block]	'
		March 31, 2013
		Carrying			Estimated fair value
		amount			Total			Level 1				Level 2			Level 3
		(in billions)
	Financial assets:
	Cash and due from banks	¥	3,619		¥	3,619		¥	3,619			¥	—		¥	—
	Interest-earning deposits in other banks		8,112			8,112			—				8,112			—
	Call loans and funds sold		619			619			—				619			—
	Receivables under resale agreements		5,660			5,660			—				5,660			—
	Receivables under securities borrowing transactions		2,615			2,615			—				2,615			—
	Investment securities(1)		2,492			2,778			272				495			2,011
	Loans, net of allowance for credit losses(2)		97,254			98,729			12				284			98,433
	Other financial assets		5,132			5,132			—				5,132			—
	Financial liabilities:
	Deposits
	Non-interest-bearing	¥	18,810		¥	18,810		¥	—			¥	18,810		¥	—
	Interest-bearing		129,420			129,480			—				129,480			—
	Total deposits		148,230			148,290			—				148,290			—
	Call money and funds purchased		4,011			4,011			—				4,011			—
	Payables under repurchase agreements		15,700			15,700			—				15,700			—
	Payables under securities lending transactions		3,993			3,993			—				3,993			—
	Due to trust account		633			633			—				633			—
	Other short-term borrowings		11,604			11,604			—				11,604			—
	Long-term debt		11,622			11,980			—				11,969			11
	Other financial liabilities		4,753			4,753			—				4,753			—
		March 31, 2014
		Carrying			Estimated fair value
		amount			Total			Level 1				Level 2			Level 3
		(in billions)
	Financial assets:
	Cash and due from banks	¥	3,689		¥	3,689		¥	3,689			¥	—		¥	—
	Interest-earning deposits in other banks		20,501			20,501			—				20,501			—
	Call loans and funds sold		919			919			—				919			—
	Receivables under resale agreements		7,300			7,300			—				7,300			—
	Receivables under securities borrowing transactions		4,210			4,210			—				4,210			—
	Investment securities(1)		2,870			2,908			220				701			1,987
	Loans, net of allowance for credit losses(2)		109,182			110,577			11				307			110,259
	Other financial assets		5,832			5,832			—				5,832			—
	Financial liabilities:
	Deposits
	Non-interest-bearing	¥	21,123		¥	21,123		¥	—			¥	21,123		¥	—
	Interest-bearing		141,406			141,447			—				141,447			—
	Total deposits		162,529			162,570			—				162,570			—
	Call money and funds purchased		3,417			3,417			—				3,417			—
	Payables under repurchase agreements		21,268			21,268			—				21,268			—
	Payables under securities lending transactions		5,521			5,521			—				5,521			—
	Due to trust account		750			750			—				750			—
	Other short-term borrowings		11,077			11,077			—				11,077			—
	Long-term debt		13,823			14,118			—				14,118			—
	Other financial liabilities		5,123			5,123			—				5,123			—
	Notes:
	-1	Includes impaired securities 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.
	-2	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.

StockBased_Compensation_Text_B1

Stock-Based Compensation [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Summary Of Stock Acquisition Rights Transactions [Table Text Block]	'
		Fiscal year ended March 31, 2014
		Number of			Weighted average			Weighted average		Aggregate
		shares			exercise price			remaining		intrinsic value
								contractual term
								(in years)		(in millions)
	Outstanding, beginning of fiscal year		23,574,800		¥	1
	Granted		2,951,500			1
	Exercised		(5,440,700	)		1
	Forfeited or Expired		(45,700	)		1
	Outstanding, end of fiscal year		21,039,900		¥	1			27.38	¥	11,909
	Exercisable, end of fiscal year		—		¥	—			—	¥	—
Fair Value Assumption Of Stock Acquisition Rights [Table Text Block]	'
		Fiscal years ended March 31,
		2012			2013			2014
	Risk-free interest rate		0.29%			0.11%			0.22%
	Expected volatility		44.96%			40.48%			30.16%
	Expected term		4 years			4 years			4 years
	Expected dividend yield		3.13%			3.18%			1.96%
Summary Of MUAH's Stock Bonus Plan [Table Text Block]	'
	Grant Date	Units			Fair Value			Vesting		Pro-rata
		Granted			of Stock			Duration		Vesting Date
	15-Apr-11		4,754,105		$	4.69			3 years		April 15
	15-Jul-11		180,740			4.94			3 years		15-Jul
	15-Apr-12		4,816,795			4.78			3 years		15-Apr
	15-Jul-12		74,175			4.72			3 years		15-Jul
	15-Apr-13		3,656,340			6.66			3 years		15-Apr
	15-Jul-13		78,725			6.67			3 years		15-Jul
Rollforward Of MUAH's Restricted Stock Units Under Stock Bonus Plan [Table Text Block]	'
		Restricted Stock Units
		2012			2013
	Units outstanding, beginning of fiscal year		7,138,334			8,857,884
	Activity during the year:
	Granted		4,890,970			3,735,065
	Vested		(2,920,392	)		(4,325,661	)
	Forfeited		(251,028	)		(416,271	)
	Units outstanding, end of fiscal year		8,857,884			7,851,017
Summary Of MUAH's Compensation Costs [Table Text Block]	'
		December 31,
		2011			2012			2013
		(in millions)
	Compensation costs	¥	1,198		¥	1,437		¥	2,051
	Tax benefit		479			559			781
	Unrecognized compensation costs		1,710			2,251			2,846

Parent_Company_Only_Financial_1

Parent Company Only Financial Information [Text Block] (Tables)	12 Months Ended
	Mar. 31, 2014
Condensed Balance Sheets [Table Text Block]	'
	Condensed Balance Sheets
		2013			2014
		(in millions)
	Assets:
	Cash and interest-earning deposits with banking subsidiaries	¥	127,303		¥	130,338
	Investments in subsidiaries and affiliated companies		12,849,434			14,439,803
	Banking subsidiaries		10,394,347			11,104,470
	Non-banking subsidiaries and affiliated companies		2,455,087			3,335,333
	Other assets		56,435			64,808
	Total assets	¥	13,033,172		¥	14,634,949
	Liabilities and Shareholders’ equity:
	Short-term borrowings from banking subsidiaries	¥	1,873,336		¥	1,917,647
	Long-term debt from non-banking subsidiaries and affiliated companies		384,107			384,445
	Long-term debt		59			78
	Other liabilities		166,875			127,739
	Total liabilities		2,424,377			2,429,909
	Total shareholders’ equity		10,608,795			12,205,040
	Total liabilities and shareholders’ equity	¥	13,033,172		¥	14,634,949
Condensed Statements Of Income [Table Text Block]	'
	Condensed Statements of Income
		2012			2013			2014
		(in millions)
	Income:
	Dividends from subsidiaries and affiliated companies	¥	270,923		¥	220,050		¥	255,175
	Banking subsidiaries		241,329			184,462			207,771
	Non-banking subsidiaries and affiliated companies		29,594			35,588			47,404
	Gain on conversion rate adjustment of Morgan Stanley’s convertible preferred stock		139,320			—			—
	Management fees from subsidiaries		16,708			17,154			18,922
	Interest income		99			77			73
	Foreign exchange gains (losses)—net		32,237			(59,375	)		(44,544	)
	Other income		5,614			634			294
	Total income		464,901			178,540			229,920
	Expense:
	Operating expenses		14,515			15,952			18,304
	Interest expense to subsidiaries and affiliated companies		37,905			30,501			28,897
	Interest expense		1,196			1,122			1,121
	Other expense		923			2,620			591
	Total expense		54,539			50,195			48,913
	Equity in undistributed net income of subsidiaries and affiliated companies—net		55,139			937,673			793,548
	Income before income tax expense (benefit)		465,501			1,066,018			974,555
	Income tax expense (benefit)		49,270			(3,106	)		(40,838	)
	Net income	¥	416,231		¥	1,069,124		¥	1,015,393
Condensed Statements Of Cash Flows [Table Text Block]	'
	Condensed Statements of Cash Flows
		2012			2013			2014
		(in millions)
	Operating activities:
	Net income	¥	416,231		¥	1,069,124		¥	1,015,393
	Adjustments and other		(133,368	)		(858,288	)		(790,050	)
	Net cash provided by operating activities		282,863			210,836			225,343
	Investing activities:
	Proceeds from sales and redemption of stock investment in subsidiaries and affiliated companies		17,371			21,160			—
	Purchases of equity investments in subsidiaries and affiliated companies		(20,000	)		(3,838	)		—
	Net decrease in interest-earning deposits with banks		18,696			8,996			1,494
	Other—net		(7,245	)		(10,623	)		(2,788	)
	Net cash provided by (used in) investing activities		8,822			15,695			(1,294	)
	Financing activities:
	Net increase (decrease) in short-term borrowings from subsidiaries		66,600			(34,989	)		(4	)
	Repayment of long-term debt		(8	)		(20	)		(16	)
	Repayment of long-term debt to subsidiaries and affiliated companies		(169,710	)		—			—
	Proceeds from sales of treasury stock		3			1			2
	Payments to acquire treasury stock		(12	)		(16	)		(46	)
	Dividends paid		(187,616	)		(187,778	)		(216,117	)
	Other—net		(1,346	)		(212	)		(2,988	)
	Net cash used in financing activities		(292,089	)		(223,014	)		(219,169	)
	Net increase (decrease) in cash and cash equivalents		(404	)		3,517			4,880
	Cash and cash equivalents at beginning of fiscal year		11,026			10,622			14,139
	Cash and cash equivalents at end of fiscal year	¥	10,622		¥	14,139		¥	19,019

Basis_Of_Financial_Statements_3

Basis Of Financial Statements And Summary Of Significant Accounting Policies (Narrative) (Detail) (JPY ¥)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Basis of financial statements:	'	'	'
Increase (decrease) to net income attributable to MUFG as 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 or after December 31	¥ 6,790,000,000	¥ 1,480,000,000	¥ (1,560,000,000)
Amendments To Accounting Scope Of Embedded Credit Derivatives [Member]	'	'	'
Accounting changes:	'	'	'
Cumulative effect on retained earnings	'	'	¥ 135,000,000
Adoption date of new guidance	'	'	1-Apr-11
Maximum [Member]	'	'	'
Summary of significant accounting policies:	'	'	'
Original maturity days of transactions classify as cash and cash equivalent	'90 days	'	'
Minimum [Member]	'	'	'
Summary of significant accounting policies:	'	'	'
Percentage of plan assets or the projected benefit obligation used in calculation of net actuarial gains and losses	10.00%	'	'
Threshold of "more likely than not" recognition for a tax position	50.00%	'	'
Minimum [Member] | Commercial [Member]	'	'	'
Summary of significant accounting policies:	'	'	'
Loans contractually past due before being placed on nonaccrual status, in month	'1 month	'	'
Minimum [Member] | Card [Member]	'	'	'
Summary of significant accounting policies:	'	'	'
Loans contractually past due before being placed on nonaccrual status, in month	'3 months	'	'
Minimum [Member] | MUAH [Member]	'	'	'
Summary of significant accounting policies:	'	'	'
Loans contractually past due before being placed on nonaccrual status, in month	'3 months	'	'
Minimum [Member] | Krungsri [Member]	'	'	'
Summary of significant accounting policies:	'	'	'
Loans contractually past due before being placed on nonaccrual status, in month	'3 months	'	'
Minimum [Member] | Residential [Member]	'	'	'
Summary of significant accounting policies:	'	'	'
Loans contractually past due before being placed on nonaccrual status, in month	'6 months	'	'

Basis_Of_Financial_Statements_4

Basis Of Financial Statements And Summary Of Significant Accounting Policies (Estimated Useful Lives Of Premises And Equipment) (Detail)	12 Months Ended
	Mar. 31, 2014
Buildings [Member] | Minimum [Member]	'
Property, Plant and Equipment [Line Items]	'
Premises and equipment, Useful life, years	'15 years
Buildings [Member] | Maximum [Member]	'
Property, Plant and Equipment [Line Items]	'
Premises and equipment, Useful life, years	'50 years
Equipment And Furniture [Member] | Minimum [Member]	'
Property, Plant and Equipment [Line Items]	'
Premises and equipment, Useful life, years	'2 years
Equipment And Furniture [Member] | Maximum [Member]	'
Property, Plant and Equipment [Line Items]	'
Premises and equipment, Useful life, years	'20 years
Leasehold Improvements [Member] | Minimum [Member]	'
Property, Plant and Equipment [Line Items]	'
Premises and equipment, Useful life, years	'10 years
Leasehold Improvements [Member] | Maximum [Member]	'
Property, Plant and Equipment [Line Items]	'
Premises and equipment, Useful life, years	'39 years

Basis_Of_Financial_Statements_5

Basis Of Financial Statements And Summary Of Significant Accounting Policies (Useful Life Of Intangible Assets And Amortization Method By Major Class) (Detail)

12 Months Ended

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Software [Member]

Software [Member]

Software [Member]

Core Deposit Intangibles [Member]

Core Deposit Intangibles [Member]

Core Deposit Intangibles [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Trade Names [Member]

Trade Names [Member]

Trade Names [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Finite-Lived Intangible Assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Finite-lived intangible assets, Useful life, years

'5 years

'5 years

'2 years

'10 years

'11 years

'4 years

'19 years

'13 years

'7 years

'27 years

'22 years

'2 years

'40 years

Finite-lived intangible assets, Amortization method

'

'Straight-line

'

'

'Declining-balance

'

'

'Straight-line, Declining-balance

'

'

'Straight-line

'

'

Business_Developments_Narrativ

Business Developments (Narrative) (Detail)

12 Months Ended

0 Months Ended

0 Months Ended

12 Months Ended

6 Months Ended

3 Months Ended

12 Months Ended

0 Months Ended

6 Months Ended

0 Months Ended

0 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

0 Months Ended

Share data in Millions, except Per Share data, unless otherwise specified

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2014

Dec. 18, 2013

Dec. 01, 2012

Dec. 01, 2012

Jun. 24, 2013

Mar. 31, 2014

Jun. 24, 2013

Sep. 30, 2011

Jun. 30, 2011

Jun. 30, 2011

Mar. 31, 2012

Dec. 26, 2012

Mar. 20, 2014

Mar. 20, 2014

Mar. 20, 2014

Mar. 20, 2014

Mar. 31, 2012

Nov. 24, 2011

Apr. 22, 2011

1-May-10

1-May-10

1-May-10

Nov. 24, 2011

1-May-10

1-May-10

1-May-10

Sep. 20, 2013

Mar. 31, 2014

Sep. 20, 2013

31-May-13

Mar. 31, 2014

Mar. 31, 2013

Dec. 18, 2013

Dec. 18, 2013

Mar. 31, 2014

Dec. 18, 2013

Dec. 18, 2013

JPY (¥)

JPY (¥)

JPY (¥)

Mitsubishi UFJ Financial Group Shareholders' Equity [Member]

Noncontrolling Interests [Member]

Krungsri [Member]

MUFG Americas Holdings Corporation [Member]

MUFG Americas Holdings Corporation [Member]

MUFG Americas Holdings Corporation [Member]

MUFG Americas Holdings Corporation [Member]

MUFG Americas Holdings Corporation [Member]

Investment in Morgan Stanley [Member]

Investment in Morgan Stanley [Member]

Investment in Morgan Stanley [Member]

Investment in Morgan Stanley [Member]

Reorganization of Mitsubishi UFJ Morgan Stanley PB Securities Co., Ltd. [Member]

Reorganization of Mitsubishi UFJ Morgan Stanley PB Securities Co., Ltd. [Member]

Reorganization of Mitsubishi UFJ Morgan Stanley PB Securities Co., Ltd. [Member]

Reorganization of Mitsubishi UFJ Morgan Stanley PB Securities Co., Ltd. [Member]

Reorganization of Mitsubishi UFJ Morgan Stanley PB Securities Co., Ltd. [Member]

Securities Joint Venture with Morgan Stanley [Member]

Securities Joint Venture with Morgan Stanley [Member]

Securities Joint Venture with Morgan Stanley [Member]

Securities Joint Venture with Morgan Stanley [Member]

Securities Joint Venture with Morgan Stanley [Member]

Securities Joint Venture with Morgan Stanley [Member]

Securities Joint Venture with Morgan Stanley [Member]

Securities Joint Venture with Morgan Stanley [Member]

Securities Joint Venture with Morgan Stanley [Member]

Securities Joint Venture with Morgan Stanley [Member]

MUTB's Acquisition of Butterfield Fulcrum Group [Member]

MUTB's Acquisition of Butterfield Fulcrum Group [Member]

MUTB's Acquisition of Butterfield Fulcrum Group [Member]

BTMU's Acquisition of Vietnam Joint Stock Commercial Bank for Industry and Trade [Member]

BTMU's Acquisition of Bank of Ayudhya Public Company Limited [Member]

BTMU's Acquisition of Bank of Ayudhya Public Company Limited [Member]

BTMU's Acquisition of Bank of Ayudhya Public Company Limited [Member]

BTMU's Acquisition of Bank of Ayudhya Public Company Limited [Member]

BTMU's Acquisition of Bank of Ayudhya Public Company Limited [Member]

BTMU's Acquisition of Bank of Ayudhya Public Company Limited [Member]

BTMU's Acquisition of Bank of Ayudhya Public Company Limited [Member]

JPY (¥)

JPY (¥)

JPY (¥)

Pacific Capital Bancorp [Member]

Pacific Capital Bancorp [Member]

PB Capital Corporation's Institutional Commercial Real Estate (CRE) Lending Division [Member]

PB Capital Corporation's Institutional Commercial Real Estate (CRE) Lending Division [Member]

PB Capital Corporation's Institutional Commercial Real Estate (CRE) Lending Division [Member]

Morgan Stanley [Member]

Morgan Stanley (As Investee) [Member]

Morgan Stanley (As Investee) [Member]

Morgan Stanley (As Investee) [Member]

Mitsubishi UFJ Morgan Stanley PB Securities Co., Ltd. [Member]

Mitsubishi UFJ Morgan Stanley PB Securities Co., Ltd. [Member]

Mitsubishi UFJ Morgan Stanley PB Securities Co., Ltd. [Member]

Mitsubishi UFJ Morgan Stanley PB Securities Co., Ltd. [Member]

Mitsubishi UFJ Morgan Stanley PB Securities Co., Ltd. [Member]

MUMSS (As Investee) [Member]

MUMSS (As Investee) [Member]

MUMSS (As Investee) [Member]

MUMSS (As Investee) [Member]

MUMSS (As Investee) [Member]

MUMSS (As Investee) [Member]

MUMSS (As Investee) [Member]

MUMSS (As Investee) [Member]

MSMS (As Investee) [Member]

MSMS (As Investee) [Member]

FGL Lux Holdings, S.a.r.l. [Member]

FGL Lux Holdings, S.a.r.l. [Member]

FGL Lux Holdings, S.a.r.l. [Member]

VietinBank [Member]

Krungsri [Member]

Krungsri [Member]

Krungsri [Member]

Krungsri [Member]

Krungsri [Member]

Krungsri [Member]

Krungsri [Member]

MUAH [Member]

MUAH [Member]

MUAH [Member]

MUAH [Member]

MUAH [Member]

JPY (¥)

Preferred Stock, Series B [Member]

Preferred Stock, Series B [Member]

MUSHD And BTMU [Member]

MUMSS [Member]

MUMSS [Member]

MUSHD [Member]

BTMU [Member]

JPY (¥)

JPY (¥)

JPY (¥)

Mitsubishi UFJ Financial Group Shareholders' Equity [Member]

Noncontrolling Interests [Member]

Capital Surplus [Member]

Morgan Stanley [Member]

Morgan Stanley [Member]

Morgan Stanley [Member]

MUTB [Member]

MUTB [Member]

MUTB [Member]

BTMU [Member]

JPY (¥)

JPY (¥)

JPY (¥)

BTMU [Member]

BTMU [Member]

BTMU [Member]

BTMU [Member]

MUB [Member]

MUB [Member]

MUB [Member]

MUB [Member]

MUB [Member]

JPY (¥)

JPY (¥)

JPY (¥)

JPY (¥)

JPY (¥)

JPY (¥)

JPY (¥)

JPY (¥)

JPY (¥)

JPY (¥)

JPY (¥)

JPY (¥)

THB

JPY (¥)

JPY (¥)

JPY (¥)

JPY (¥)

JPY (¥)

Schedule Of Business Development [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount of business acquisition

'

'

'

'

'

'

¥ 124,484,000,000

'

¥ 358,040,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

¥ 30,191,000,000

'

'

'

'

'

'

¥ 545,840,000,000

'

'

'

Goodwill

728,515,000,000

417,956,000,000

354,283,000,000

'

'

217,386,000,000

'

33,875,000,000

'

'

22,077,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

20,274,000,000

'

'

'

'

'

'

217,386,000,000

'

Amount of intangible assets, other than goodwill, recorded on acquisitions

'

'

'

'

'

214,607,000,000

[1]

'

6,093,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

214,607,000,000

'

Period that management may further adjust the provisional fair values estimates from the date of acquisition

'

'

'

'

'

'

'

'

'up to one year

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount of goodwill recognized as measurement period adjustments applied to the acquisition date fair value

'

'

'

'

'

'

'

'

'

1,038,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,831,000,000

'

'

'

'

'

'

'

'

'

Conversion of Stock, Amount Converted

'

'

808,266,000,000

'

'

'

'

'

'

'

'

'

'

'

808,266,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Conversion of Stock, Shares Converted

'

'

'

'

'

'

'

'

'

'

'

'

'

385

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Approximate number of affiliate's additional common stock received resulting from the conversion rate adjustment

'

'

'

'

'

'

'

'

'

'

'

'

'

75

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain recognized in relation to the conversion rate adjustment of affiliate's convertible preferred stock

'

'

139,320,000,000

'

'

'

'

'

'

'

'

'

'

'

139,320,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of existing investment prior to conversion

'

'

'

'

'

'

'

'

'

'

'

'

3.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of ownership interest of equity method investee acquired

'

'

'

'

'

'

'

'

'

'

'

'

22.40%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

20.00%

'

'

'

'

'

'

'

Percentage of decline in the quoted market price of affiliate's common stock

'

'

'

'

'

'

'

'

'

'

'

41.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other-than-temporary impairment losses on investments to affiliate's common stock

'

'

'

'

'

'

'

'

'

'

'

579,468,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of ownership acquired

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

49.00%

'

75.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

'

'

'

'

'

'

72.01%

72.01%

Percentage of ownership in the shares of a subsidiary

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

51.00%

'

'

'

25.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of original interest in a subsidiary

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

51.00%

24.00%

'

'

'

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of the allocated difference between the cash paid and the cost basis of assets and liabilities

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

40.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount of the allocated difference between the cash paid and the cost basis of assets and liabilities

'

'

'

13,839,000,000

-13,839,000,000

'

'

'

'

'

'

'

'

'

'

'

13,839,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of economic and voting rights interests in a subsidiary

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

60.00%

'

'

'

40.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount of change in ownership interest recorded from an equity transaction in a subsidiary

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

127,000,000,000

21,000,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of voting rights interest

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

49.00%

51.00%

'

'

'

'

'

'

'

'

'

'

'

Percentage of economic interest

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

60.00%

40.00%

'

'

'

'

'

'

'

'

'

'

'

Amount of capital contribution

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

20,000,000,000

30,000,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount of employee termination expenses related to early retirement program

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

20,000,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of capital contribution in new share issuance to a subsidiary

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

40.00%

40.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Change in ownership interest of a subsidiary from capital surplus to noncontrolling interests

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8,000,000,000

12,000,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount of capital contribution to meet an anticipated change in regulatory capital requirement

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

15,000,000,000

'

'

'

'

10,000,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount of intangible assets other than goodwill recognized as measurement period adjustments applied to the acquisition date fair value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

21,646,000,000

'

'

'

'

'

'

'

'

'

Amount of affiliate's ordinary shares acquired

75,136,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

75,136,000,000

'

'

'

'

'

'

'

Per share price on a voluntary tender offer

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

39

Noncontrolling interests recorded on acquisitions

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

202,223,000,000

'

Business acquisition related cost

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,267,000,000

'

'

Loans at fair value not subjected to the guidance on loans and debt securities acquired with deteriorated credit quality

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,883,981,000,000

'

'

'

'

Gross contractual amounts receivable for acquired loans

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,945,857,000,000

'

'

'

'

Loans not expected to be collected

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

91,404,000,000

'

'

'

'

Intangible assets subject to amortization acquired during the period

¥ 455,843,000,000

¥ 171,650,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

¥ 16,060,000,000

¥ 12,871,000,000

'

'

'

'

'

[1]

Intangible assets primarily include ¥124,290 million of customer relationships and ¥59,891 million of core deposit intangibles with weighted average amortization periods of 11 years.

Business_Developments_Statemen

Business Developments (Statement Of The Assets Acquired And Liabilities Assumed) (Detail) (JPY ¥)	12 Months Ended			12 Months Ended				0 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2014	Mar. 31, 2014	Dec. 18, 2013		Dec. 18, 2013	Dec. 18, 2013
				Customer Relationships [Member]	Core Deposit Intangibles [Member]	Krungsri [Member]		Krungsri [Member]	Krungsri [Member]
								Customer Relationships [Member]	Core Deposit Intangibles [Member]
Business Acquisition [Line Items]	'	'	'	'	'	'		'	'
Loans	'	'	'	'	'	¥ 2,934,656		'	'
Goodwill	728,515	417,956	354,283	'	'	217,386		'	'
Intangible assets	'	'	'	'	'	214,607	[1]	'	'
Total assets	'	'	'	'	'	4,144,517		'	'
Deposits - Total deposits	'	'	'	'	'	2,488,862		'	'
Total liabilities	'	'	'	'	'	3,396,454		'	'
Intangible assets subject to amortization acquired during the period	¥ 455,843	¥ 171,650	'	¥ 145,936	¥ 61,629	'		¥ 124,290	¥ 59,891
Weighted average amortization periods of intangible assets subject to amortization, years	'	'5 years	'	'13 years	'11 years	'		'11 years	'11 years
[1]	Intangible assets primarily include ¥124,290 million of customer relationships and ¥59,891 million of core deposit intangibles with weighted average amortization periods of 11 years.

Business_Developments_Pro_Form

Business Developments (Pro Forma Statement Of Income) (Detail) (Krungsri [Member], JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Krungsri [Member]	'	'
Statement of income data:	'	'
Net interest income	¥ 2,102,038	¥ 1,967,113
Non-interest income - Total	1,903,620	2,127,990
Net income attributable to Mitsubishi UFJ Financial Group	¥ 1,035,502	¥ 1,084,373

Investment_Securities_Narrativ

Investment Securities (Narrative) (Detail) (JPY ¥)

6 Months Ended

12 Months Ended

6 Months Ended

12 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Sep. 30, 2012

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2011

Mar. 31, 2010

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2014

MUAH [Member]

MUAH [Member]

Debt Securities [Member]

Debt Securities [Member]

Debt Securities [Member]

Debt Securities [Member]

Debt Securities [Member]

Marketable Equity Securities [Member]

Marketable Equity Securities [Member]

Nonmarketable Equity Securities [Member]

Minimum [Member]

CLO [Member]

Under Basel III [Member]

MUAH [Member]

Residential Mortgage-Backed Securities And Commercial Mortgage-Backed Securities [Member]

CLO [Member]

Investment Securities [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Investment securities other than Securities available-for-sale or being held-to-maturity, carrying value

'

¥ 711,416

¥ 864,052

'

'

'

'

'

'

'

'

'

'

'

'

Fair value of investment securities held by certain subsidiaries

'

26,201

25,900

'

'

'

'

'

'

'

'

'

'

'

'

Amount of cost-method investments, fair value estimated by commonly accepted valuation techniques

'

159,556

357,805

'

'

'

'

'

'

'

'

'

'

'

'

Amount of cost-method investments, test performed to determine whether any impairment indicator exists

'

551,860

506,247

'

'

'

'

'

'

'

'

'

'

'

'

Aggregate costs of cost-method investments, not estimated at the fair value

'

548,679

503,671

'

'

'

'

'

'

'

'

'

'

'

'

Other-than-temporary Impairment losses recognized on cost-method investments

'

3,628

2,364

5,829

'

'

'

'

'

'

'

'

'

'

'

Gross realized gains on available-for-sale of securities

'

261,384

282,609

233,253

'

'

'

'

'

'

'

'

'

'

'

Gross realized losses on available-for-sale of securities

'

54,921

31,906

56,226

'

'

'

'

'

'

'

'

'

'

'

Carrying amount of securities transferred from Securities being held-to-maturity to securities available-for-sale

7,856

'

47,566

7,856

88,799

'

'

'

'

'

'

'

'

'

'

Losses on sale of transferred securities from Securities being held-to-maturity

691

'

1,518

'

'

'

'

'

'

'

'

'

'

'

'

Carrying amount of Securities being held-to-maturity immediately prior to the transfer to Securities available-for-sale on the date, Total

'

2,706,982

2,131,164

'

88,799

'

'

'

'

'

'

'

'

'

'

Unrealized losses in unamortized OCI prior to the transfer to Securities available-for-sale on the date

'

'

'

'

24,026

'

'

'

'

'

'

'

'

'

'

Unrealized loss recorded in OCI on the transfer of Securities being held-to-maturity to Securities available-for-sale

'

'

'

'

4,949

'

'

'

'

'

'

'

'

'

'

Fair value of the securities reclassified from Securities available-for-sale to Securities being held-to-maturity

'

'

12,356

'

'

411,535

'

'

'

'

111,895

'

'

'

'

Other-than-temporary impairment of investment securities included in Investment securities gains

'

6,534

124,172

195,684

'

'

'

'

'

'

'

'

'

'

'

Other-than-temporary impairment losses from Securities available-for-sale

'

'

'

'

'

'

2,605

8,329

13,782

'

'

113,479

176,073

3,628

'

Cumulative decline in fair value of the credit impaired securities

'

'

'

'

'

'

4,933

13,047

'

'

'

'

'

'

'

Credit loss component of impairment losses recognized in earnings

'

'

'

'

'

'

12,556

24,525

30,066

35,458

'

'

'

'

'

Other factors of impairment losses recognized in accumulated other comprehensive income (loss) before taxes

'

'

'

'

'

'

¥ 7,625

¥ 11,479

'

'

'

'

'

'

'

Number of months that fair value of the investment has been below cost to be deemed as other-than-temporary

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'6 months

Percentage of decline in fair value of investment below cost set as an indicator for classifying investments as an other-than-temporary decline in fair value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

20.00%

Investment_Securities_Amortize

Investment Securities (Amortized Cost, Gross Unrealized Gains (Losses) And Fair Value Of Investment Securities) (Detail) (JPY ¥)

Mar. 31, 2014

Mar. 31, 2013

Sep. 30, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2013

Mar. 31, 2010

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

In Millions, unless otherwise specified

MUAH [Member]

Debt Securities [Member]

Debt Securities [Member]

Debt Securities [Member]

Debt Securities [Member]

Debt Securities [Member]

Debt Securities [Member]

Debt Securities [Member]

Debt Securities [Member]

Debt Securities [Member]

Debt Securities [Member]

Debt Securities [Member]

Debt Securities [Member]

Debt Securities [Member]

Debt Securities [Member]

Debt Securities [Member]

Debt Securities [Member]

Debt Securities [Member]

Debt Securities [Member]

Debt Securities [Member]

Debt Securities [Member]

Debt Securities [Member]

Debt Securities [Member]

Marketable Equity Securities [Member]

Marketable Equity Securities [Member]

CLO [Member]

Residential Mortgage-Backed Securities, Other [Member]

Residential Mortgage-Backed Securities, Other [Member]

MUAH [Member]

MUAH [Member]

MUAH [Member]

MUAH [Member]

Japanese National Government And Japanese Government Agency Bonds [Member]

Japanese National Government And Japanese Government Agency Bonds [Member]

Japanese Prefectural And Municipal Bonds [Member]

Japanese Prefectural And Municipal Bonds [Member]

Foreign Governments And Official Institutions Bonds [Member]

Foreign Governments And Official Institutions Bonds [Member]

Corporate Bonds [Member]

Corporate Bonds [Member]

Residential Mortgage-Backed Securities [Member]

Residential Mortgage-Backed Securities [Member]

Commercial Mortgage-Backed Securities [Member]

Commercial Mortgage-Backed Securities [Member]

Asset-Backed Securities [Member]

Asset-Backed Securities [Member]

Other Debt Securities [Member]

Other Debt Securities [Member]

CLO [Member]

CLO [Member]

Residential Mortgage-Backed Securities, Other [Member]

Commercial Mortgage-Backed Securities, Other [Member]

Investment Securities [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Securities available-for-sale, Amortized cost

¥ 49,301,640

¥ 56,548,170

'

'

'

'

'

'

'

¥ 41,388,592

¥ 49,159,827

¥ 195,176

¥ 207,227

¥ 1,272,181

¥ 701,504

¥ 1,523,026

¥ 1,868,599

¥ 1,011,644

¥ 1,204,219

¥ 208,690

¥ 260,057

¥ 1,060,844

¥ 813,312

¥ 184,495

[1]

¥ 109,365

[2]

¥ 2,456,992

¥ 2,224,060

Securities available-for-sale, Gross unrealized gains

2,654,735

2,314,770

'

'

'

'

'

'

'

201,539

323,725

7,979

9,852

13,460

17,814

38,920

55,044

665

20,902

826

9,895

2,747

1,132

3,650

[1]

2,247

[2]

2,384,949

1,874,159

Securities available-for-sale, Gross unrealized losses

70,723

18,871

'

'

'

'

'

'

'

1,122

3,598

24

4

14,220

3,022

817

697

31,714

1,501

9,370

570

5,547

3,766

3,199

[1]

4,898

[2]

4,710

815

Securities available-for-sale, Fair value

51,885,652

58,844,069

'

'

'

'

'

'

'

41,589,009

49,479,954

203,131

217,075

1,271,421

716,296

1,561,129

1,922,946

980,595

1,223,620

200,146

269,382

1,058,044

810,678

184,946

[1]

106,714

[2]

4,837,231

4,097,404

Securities being held-to-maturity, Amortized cost

2,706,982

2,131,164

88,799

'

'

'

'

'

'

214,968

232,881

'

'

22,091

284,315

5,548

23,555

526,431

86,722

159,532

'

1,778,412

1,503,691

'

'

'

'

Securities being held-to-maturity, Gross unrealized gains

39,110

56,917

'

'

'

'

'

'

'

870

1,883

'

'

1,099

2,409

7

173

883

[3]

1,056

[4]

343

'

35,908

51,396

'

'

'

'

Securities being held-to-maturity, Gross unrealized losses

10,965

11

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

7,304

[5]

11

1,282

[5]

'

2,379

'

[6]

'

'

'

'

Securities being held-to-maturity, Fair value

2,735,127

2,188,070

'

'

'

'

'

'

'

215,838

234,764

'

'

23,190

286,724

5,555

23,728

520,010

87,767

158,593

'

1,811,941

1,555,087

'

'

'

'

Fair value of private placement debt conduit bonds

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

182,613

106,699

'

'

Fair value of the securities reclassified from Securities available-for-sale to Securities being held-to-maturity

'

12,356

'

'

12,356

'

111,895

273,195

138,340

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unrealized gains(losses) before taxes at the date of reclassification from Securities available-for-sale to Securities being held-to-maturity remaining in Accumulated other comprehensive income (loss)

'

'

'

¥ 355

¥ 395

¥ (1,460)

'

¥ (7,702)

¥ (9,663)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

Other debt securities in the table above include ¥182,613 million of private placement debt conduit bonds.

[2]

Other debt securities in the table above include ¥106,699 million of private placement debt conduit bonds.

[3]

As a result of the reclassification during the fiscal year ended March 31, 2013, the unrealized gains before taxes at the date of reclassification remaining in Accumulated OCI in the accompanying consolidated balance sheets were ¥355 million at March 31, 2014 and not included in the table above.

[4]

The MUFG Group reclassified residential mortgage-backed securities, which totaled ¥12,356 million at fair value, from Securities available-for-sale to Securities being held-to-maturity during the fiscal year ended March 31, 2013. As a result of the reclassification, the unrealized gains before taxes at the date of reclassification remaining in Accumulated OCI in the accompanying consolidated balance sheets was ¥395 million at March 31, 2013 and not included in the table above.

[5]

MUAH reclassified residential mortgage-backed securities and commercial mortgage-backed securities, which were carried at fair value of ¥273,195 million and ¥138,340 million, respectively, from Securities available-for-sale to Securities being held-to-maturity during the fiscal year ended March 31, 2014. As a result of the reclassification, the unrealized losses before taxes at the date of reclassification remaining in Accumulated OCI in the accompanying consolidated balance sheets were ¥7,702 million and ¥9,663 million, respectively, at March 31, 2014 and not included in the table above.

[6]

MUAH reclassified collateralized loan obligations ("CLOs"), which totaled ¥111,895 million at fair value, from Securities available-for-sale to Securities being held-to-maturity during the fiscal year ended March 31, 2010. As a result of the reclassification, the unrealized losses before taxes at the date of reclassification remaining in Accumulated OCI in the accompanying consolidated balance sheets was ¥1,460 million at March 31, 2013 and not included in the table above.

Investment_Securities_Amortize1

Investment Securities (Amortized Cost And Fair Value By Contractual Maturity) (Detail) (JPY ¥)	Mar. 31, 2014	Mar. 31, 2013
In Millions, unless otherwise specified
Held-to-maturity, Amortized cost:	'	'
Due in one year or less	¥ 214,084	'
Due from one year to five years	77,117	'
Due from five years to ten years	1,403,762	'
Due after ten years	1,012,019	'
Total, Held-to-maturity, Amortized cost	2,706,982	2,131,164
Held-to-maturity, Fair value:	'	'
Due in one year or less	214,812	'
Due from one year to five years	77,455	'
Due from five years to ten years	1,436,763	'
Due after ten years	1,006,097	'
Securities being held-to-maturity, Fair value	2,735,127	2,188,070
Available-for-sale, Fair value:	'	'
Due in one year or less	15,899,122	'
Due from one year to five years	21,777,591	'
Due from five years to ten years	6,414,994	'
Due after ten years	2,956,714	'
Total, Available-for-sale, Fair value	¥ 47,048,421	'

Investment_Securities_Investme

Investment Securities (Investments By Type And Length In Continuous Loss Position) (Detail) (JPY ¥)	Mar. 31, 2014		Mar. 31, 2013
In Millions, unless otherwise specified	Securities		Securities
Investment Securities [Line Items]	'		'
Securities available-for-sale, Fair value, Less than 12 months	¥ 12,622,044		¥ 7,359,205
Securities available-for-sale, Gross unrealized losses, Less than 12 months	61,873		10,284
Securities available-for-sale, Fair value, 12 months or more	245,607		776,172
Securities available-for-sale, Gross unrealized losses, 12 months or more	8,850		8,587
Securities available-for-sale, Fair value	12,867,651		8,135,377
Securities available-for-sale, Gross unrealized losses	70,723		18,871
Securities available-for-sale, Number of securities	1,802		1,911
Securities being held-to-maturity, Fair value, Less than 12 months	1,015,987		3,370
Securities being held-to-maturity, Gross unrealized losses, Less than 12 months	10,599		11
Securities being held-to-maturity, Fair value, 12 months or more	57,226		'
Securities being held-to-maturity, Gross unrealized losses, 12 months or more	366		'
Securities being held-to-maturity, Fair value	1,073,213		3,370
Securities being held-to-maturity, Gross unrealized losses	10,965		11
Securities being held-to-maturity, Number of securities	248		10
Debt Securities [Member] | Japanese National Government And Japanese Government Agency Bonds [Member]	'		'
Investment Securities [Line Items]	'		'
Securities available-for-sale, Fair value, Less than 12 months	10,469,832		6,859,342
Securities available-for-sale, Gross unrealized losses, Less than 12 months	1,122		672
Securities available-for-sale, Fair value, 12 months or more	'		584,048
Securities available-for-sale, Gross unrealized losses, 12 months or more	'		2,926
Securities available-for-sale, Fair value	10,469,832		7,443,390
Securities available-for-sale, Gross unrealized losses	1,122		3,598
Securities available-for-sale, Number of securities	49		33
Debt Securities [Member] | Japanese Prefectural And Municipal Bonds [Member]	'		'
Investment Securities [Line Items]	'		'
Securities available-for-sale, Fair value, Less than 12 months	12,555		1,486
Securities available-for-sale, Gross unrealized losses, Less than 12 months	24		4
Securities available-for-sale, Fair value	12,555		1,486
Securities available-for-sale, Gross unrealized losses	24		4
Securities available-for-sale, Number of securities	6		1
Debt Securities [Member] | Foreign Governments And Official Institutions Bonds [Member]	'		'
Investment Securities [Line Items]	'		'
Securities available-for-sale, Fair value, Less than 12 months	527,706		157,287
Securities available-for-sale, Gross unrealized losses, Less than 12 months	9,084		2,867
Securities available-for-sale, Fair value, 12 months or more	110,015		11,332
Securities available-for-sale, Gross unrealized losses, 12 months or more	5,136		155
Securities available-for-sale, Fair value	637,721		168,619
Securities available-for-sale, Gross unrealized losses	14,220		3,022
Securities available-for-sale, Number of securities	150		108
Debt Securities [Member] | Corporate Bonds [Member]	'		'
Investment Securities [Line Items]	'		'
Securities available-for-sale, Fair value, Less than 12 months	136,296		76,521
Securities available-for-sale, Gross unrealized losses, Less than 12 months	709		306
Securities available-for-sale, Fair value, 12 months or more	29,242		56,953
Securities available-for-sale, Gross unrealized losses, 12 months or more	108		391
Securities available-for-sale, Fair value	165,538		133,474
Securities available-for-sale, Gross unrealized losses	817		697
Securities available-for-sale, Number of securities	815		1,360
Debt Securities [Member] | Residential Mortgage-Backed Securities [Member]	'		'
Investment Securities [Line Items]	'		'
Securities available-for-sale, Fair value, Less than 12 months	904,239		102,511
Securities available-for-sale, Gross unrealized losses, Less than 12 months	31,094		276
Securities available-for-sale, Fair value, 12 months or more	28,406		25,766
Securities available-for-sale, Gross unrealized losses, 12 months or more	620		1,225
Securities available-for-sale, Fair value	932,645		128,277
Securities available-for-sale, Gross unrealized losses	31,714		1,501
Securities available-for-sale, Number of securities	431		182
Securities being held-to-maturity, Fair value, Less than 12 months	408,244		3,370
Securities being held-to-maturity, Gross unrealized losses, Less than 12 months	7,187		11
Securities being held-to-maturity, Fair value, 12 months or more	5,681		'
Securities being held-to-maturity, Gross unrealized losses, 12 months or more	117		'
Securities being held-to-maturity, Fair value	413,925		3,370
Securities being held-to-maturity, Gross unrealized losses	7,304	[1]	11
Securities being held-to-maturity, Number of securities	198		10
Debt Securities [Member] | Commercial Mortgage-Backed Securities [Member]	'		'
Investment Securities [Line Items]	'		'
Securities available-for-sale, Fair value, Less than 12 months	135,014		58,459
Securities available-for-sale, Gross unrealized losses, Less than 12 months	8,427		530
Securities available-for-sale, Fair value, 12 months or more	8,235		12,134
Securities available-for-sale, Gross unrealized losses, 12 months or more	943		40
Securities available-for-sale, Fair value	143,249		70,593
Securities available-for-sale, Gross unrealized losses	9,370		570
Securities available-for-sale, Number of securities	155		24
Securities being held-to-maturity, Fair value, Less than 12 months	107,048		'
Securities being held-to-maturity, Gross unrealized losses, Less than 12 months	1,033		'
Securities being held-to-maturity, Fair value, 12 months or more	51,545		'
Securities being held-to-maturity, Gross unrealized losses, 12 months or more	249		'
Securities being held-to-maturity, Fair value	158,593		'
Securities being held-to-maturity, Gross unrealized losses	1,282	[1]	'
Securities being held-to-maturity, Number of securities	28		'
Debt Securities [Member] | Asset-Backed Securities [Member]	'		'
Investment Securities [Line Items]	'		'
Securities available-for-sale, Fair value, Less than 12 months	213,683		17,239
Securities available-for-sale, Gross unrealized losses, Less than 12 months	5,518		37
Securities available-for-sale, Fair value, 12 months or more	1,078		85,069
Securities available-for-sale, Gross unrealized losses, 12 months or more	29		3,729
Securities available-for-sale, Fair value	214,761		102,308
Securities available-for-sale, Gross unrealized losses	5,547		3,766
Securities available-for-sale, Number of securities	103		131
Securities being held-to-maturity, Fair value, Less than 12 months	500,695		'
Securities being held-to-maturity, Gross unrealized losses, Less than 12 months	2,379		'
Securities being held-to-maturity, Fair value	500,695		'
Securities being held-to-maturity, Gross unrealized losses	2,379		'	[2]
Securities being held-to-maturity, Number of securities	22		'
Debt Securities [Member] | Other Debt Securities [Member]	'		'
Investment Securities [Line Items]	'		'
Securities available-for-sale, Fair value, Less than 12 months	46,835		71,217
Securities available-for-sale, Gross unrealized losses, Less than 12 months	1,203		4,898
Securities available-for-sale, Fair value, 12 months or more	68,630		'
Securities available-for-sale, Gross unrealized losses, 12 months or more	1,996		'
Securities available-for-sale, Fair value	115,465		71,217
Securities available-for-sale, Gross unrealized losses	3,199	[3]	4,898	[4]
Securities available-for-sale, Number of securities	51		49
Marketable Equity Securities [Member]	'		'
Investment Securities [Line Items]	'		'
Securities available-for-sale, Fair value, Less than 12 months	175,884		15,143
Securities available-for-sale, Gross unrealized losses, Less than 12 months	4,692		694
Securities available-for-sale, Fair value, 12 months or more	1		870
Securities available-for-sale, Gross unrealized losses, 12 months or more	18		121
Securities available-for-sale, Fair value	175,885		16,013
Securities available-for-sale, Gross unrealized losses	¥ 4,710		¥ 815
Securities available-for-sale, Number of securities	42		23
[1]	MUAH reclassified residential mortgage-backed securities and commercial mortgage-backed securities, which were carried at fair value of ¥273,195 million and ¥138,340 million, respectively, from Securities available-for-sale to Securities being held-to-maturity during the fiscal year ended March 31, 2014. As a result of the reclassification, the unrealized losses before taxes at the date of reclassification remaining in Accumulated OCI in the accompanying consolidated balance sheets were ¥7,702 million and ¥9,663 million, respectively, at March 31, 2014 and not included in the table above.
[2]	MUAH reclassified collateralized loan obligations ("CLOs"), which totaled ¥111,895 million at fair value, from Securities available-for-sale to Securities being held-to-maturity during the fiscal year ended March 31, 2010. As a result of the reclassification, the unrealized losses before taxes at the date of reclassification remaining in Accumulated OCI in the accompanying consolidated balance sheets was ¥1,460 million at March 31, 2013 and not included in the table above.
[3]	Other debt securities in the table above include ¥182,613 million of private placement debt conduit bonds.
[4]	Other debt securities in the table above include ¥106,699 million of private placement debt conduit bonds.

Investment_Securities_RollForw

Investment Securities (Roll-Forward Of Credit Loss Component Recognized In Earnings) (Detail) (Debt Securities [Member], JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Debt Securities [Member]	'	'	'
Roll-forward of credit loss component recognized in earnings:	'	'	'
Balance at beginning of period	¥ 24,525	¥ 30,066	¥ 35,458
Additions: Initial credit impairments	1,466	5,347	8,596
Additions: Subsequent credit impairments	1,139	2,982	5,186
Reductions: Securities sold or matured	-14,574	-13,870	-19,174
Balance at end of period	¥ 12,556	¥ 24,525	¥ 30,066

Loans_And_Allowance_For_Credit2

Loans And Allowance For Credit Losses (Narrative) (Detail) (JPY ¥)	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2012	Sep. 30, 2011	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 1997
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'	'
Commitments to extend credit to customers with TDRs	'	'	¥ 44,116,000,000	¥ 10,662,000,000	'	'
Decrease in the allowance for credit losses due to loan disposal activity recognized as net charge-offs during the fiscal year	'	'	16,200,000,000	400,000,000	1,200,000,000	'
Loans to Housing Loan Administration Corporation	'	'	'	'	'	407,078,000,000
Original maturity term of loans to Housing Loan Administration Corporation, years	'	'	'	'	'	'15 years
Maturity of loans to Housing Loan Administration Corporation	'	'	'	'	'	'2011
Interest rate (percentage above Tokyo Interbank Offered Rate) on loans to Housing Loan Administration Corporation	'	'	'	'	'	0.13%
Initial non-interest-bearing deposits with the Special Fund and New Fund	'	'	'	'	'	176,089,000,000
Number of years of collection activities of the Jusen loans	'	'	'	'	'	'15 years
Number of years of the investment income earned by the Special Fund that will be used to absorb loss of Jusen loans	'	'	'	'	'	'15 years
Deposits fully collected with the New Fund regarding the Government-led Loan Restructuring Program	'	161,435,000,000	'	'	'	'
Deposits fully collected with the Special Fund regarding the Government-led Loan Restructuring Program	204,956,000,000	'	'	'	'	'
Net gains (losses) on disposal of nonperforming loans during the fiscal year	'	'	18,984,000,000	14,274,000,000	16,256,000,000	'
Minimum [Member]	'	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'	'
Accruing loans contractually past due, in day	'	'	'90 days	'90 days	'	'
Commercial [Member]	'	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'	'
Significant sales of loans	'	'	906,000,000,000	884,000,000,000	706,000,000,000	'
Commercial [Member] | Minimum [Member]	'	'	'	'	'	'
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, in month	'	'	'1 month	'	'	'
Commercial [Member] | Normal [Member]	'	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'	'
Internal borrower ratings	'	'	'1-9	'	'	'
Commercial [Member] | Close Watch [Member]	'	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'	'
Internal borrower ratings	'	'	'10-12	'	'	'
Commercial [Member] | Likely To Become Bankrupt Or Legally / Virtually Bankrupt [Member]	'	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'	'
Internal borrower ratings	'	'	'13-15	'	'	'
Card [Member] | Minimum [Member]	'	'	'	'	'	'
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, in month	'	'	'1 month	'	'	'
MUAH [Member]	'	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'	'
Significant purchases of loans	'	'	337,000,000,000	'	'	'
MUAH [Member] | Minimum [Member]	'	'	'	'	'	'
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, in day	'	'	'60 days	'	'	'
Residential [Member] | Minimum [Member]	'	'	'	'	'	'
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, in month	'	'	'6 months	'	'	'
Krungsri [Member] | Minimum [Member]	'	'	'	'	'	'
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, in month	'	'	'6 months	'	'	'
Cumulative period of loans to be categorized as Special mention, commencing from the contractual due date in month	'	'	'1 month	'	'	'
Cumulative period of Substandard, Doubtful or Doubtful of loss, commencing from the contractual due date in month	'	'	'3 months	'	'	'
Commercial And Residential [Member] | Maximum [Member]	'	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'	'
Temporary extensions of maturity dates to nonaccrual loans, in day	'	'	'90 days	'	'	'
Krungsri [Member]	'	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'	'
Amount of lease receivables resulted from the acquisition	'	'	¥ 912,366,000,000	'	'	'

Loans_And_Allowance_For_Credit3

Loans And Allowance For Credit Losses (Loans By Domicile And Industry Of Borrower Segment Classification) (Detail) (JPY ¥)	Mar. 31, 2014		Mar. 31, 2013
In Millions, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Unearned income, unamortized premiums-net and deferred loan fees-net	¥ (260,090)		¥ (122,478)
Total Loans, net	110,276,411	[1]	98,590,229	[1]
Loans held for sale	46,635		35,261
Domestic [Member]	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Loans	70,526,583		69,440,112
Domestic [Member] | Manufacturing [Member]	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Loans	11,540,753		11,767,352
Domestic [Member] | Construction [Member]	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Loans	980,877		1,056,276
Domestic [Member] | Real Estate [Member]	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Loans	10,989,562		11,143,777
Domestic [Member] | Services [Member]	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Loans	2,693,561		2,881,666
Domestic [Member] | Wholesale And Retail [Member]	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Loans	8,475,143		8,330,553
Domestic [Member] | Banks And Other Financial Institutions [Member]	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Loans	3,985,106	[2]	3,622,021	[2]
Domestic [Member] | Communication And Information Services [Member]	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Loans	1,443,466		1,314,505
Domestic [Member] | Other Industries [Member]	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Loans	13,496,763		12,191,566
Domestic [Member] | Consumer [Member]	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Loans	16,921,352		17,132,396
Foreign [Member]	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Loans	40,009,918		29,272,595
Foreign [Member] | Governments And Official Institutions [Member]	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Loans	811,475		673,548
Foreign [Member] | Banks And Other Financial Institutions [Member]	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Loans	9,792,255	[2]	7,258,978	[2]
Foreign [Member] | Commercial And Industrial [Member]	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Loans	24,533,816		18,738,731
Foreign [Member] | Other [Member]	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Loans	¥ 4,872,372		¥ 2,601,338
[1]	The above table includes loans held for sale of ¥35,261 million and ¥46,635 million at March 31, 2013 and 2014, respectively, which are carried at the lower of cost or estimated fair value.
[2]	Loans to the so-called non-bank finance companies are generally included in the "Banks and other financial institutions" category. Non-bank finance companies are primarily engaged in consumer lending, factoring and credit card businesses.

Loans_And_Allowance_For_Credit4

Loans And Allowance For Credit Losses (Nonaccrual Status Of Loans By Class) (Detail) (JPY ¥)	Mar. 31, 2014		Mar. 31, 2013
In Millions, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Nonaccrual loans	¥ 1,076,795	[1]	¥ 1,272,330	[1]
Loans held for sale placed on nonaccrual status	'		818
Loans acquired with deteriorated credit quality placed on nonaccrual status	38,651		21,965
Commercial [Member] | Domestic [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Nonaccrual loans	737,896		911,700
Commercial [Member] | Domestic [Member] | Manufacturing [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Nonaccrual loans	167,859		211,975
Commercial [Member] | Domestic [Member] | Construction [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Nonaccrual loans	30,093		37,381
Commercial [Member] | Domestic [Member] | Real Estate [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Nonaccrual loans	141,974		185,597
Commercial [Member] | Domestic [Member] | Services [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Nonaccrual loans	72,059		85,987
Commercial [Member] | Domestic [Member] | Wholesale And Retail [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Nonaccrual loans	211,770		249,251
Commercial [Member] | Domestic [Member] | Banks And Other Financial Institutions [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Nonaccrual loans	7,234		13,993
Commercial [Member] | Domestic [Member] | Communication And Information Services [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Nonaccrual loans	24,956		31,941
Commercial [Member] | Domestic [Member] | Other Industries [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Nonaccrual loans	35,959		42,513
Commercial [Member] | Domestic [Member] | Consumer [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Nonaccrual loans	45,992		53,062
Commercial [Member] | Foreign-excluding MUAH and Krungsri [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Nonaccrual loans	82,617		98,085
Residential [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Nonaccrual loans	111,252		130,830
Card [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Nonaccrual loans	72,483		88,045
MUAH [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Nonaccrual loans	46,574		43,670
Krungsri [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Nonaccrual loans	¥ 25,973		'
[1]	The above table does not include loans held for sale of ¥818 million and nil at March 31, 2013 and 2014, respectively, and loans acquired with deteriorated credit quality of ¥21,965 million and ¥38,651 million at March 31, 2013 and 2014, respectively.

Loans_And_Allowance_For_Credit5

Loans And Allowance For Credit Losses (Impaired Loans By Class) (Detail) (JPY ¥)	Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2012
In Millions, unless otherwise specified
Financing Receivable, Impaired [Line Items]	'		'		'
Recorded loan balance, Requiring an allowance for credit losses	¥ 1,564,484	[1]	¥ 1,844,835	[1]	'
Recorded loan balance, Not requiring an allowance for credit losses	296,543	[1],[2]	355,931	[1],[2]	'
Recorded loan balance, Total	1,861,027	[1],[3]	2,200,766	[1],[3]	'
Unpaid principal balance	1,982,989	[1]	2,348,980	[1]	'
Related allowance for credit losses	750,321	[1]	954,961	[1]	'
Accrual TDRs included in impaired loans	832,267		945,623		892,823
Impaired loans held for sales	'		818		'
Commercial [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Accrual TDRs included in impaired loans	642,408		671,083		'
Commercial [Member] | Domestic [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Recorded loan balance, Requiring an allowance for credit losses	1,006,333		1,158,927		'
Recorded loan balance, Not requiring an allowance for credit losses	257,215	[2]	318,028	[2]	'
Recorded loan balance, Total	1,263,548	[3]	1,476,955	[3]	'
Unpaid principal balance	1,312,320		1,537,180		'
Related allowance for credit losses	544,224		662,347		'
Commercial [Member] | Domestic [Member] | Manufacturing [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Recorded loan balance, Requiring an allowance for credit losses	368,866		400,946		'
Recorded loan balance, Not requiring an allowance for credit losses	55,003	[2]	55,819	[2]	'
Recorded loan balance, Total	423,869	[3]	456,765	[3]	'
Unpaid principal balance	431,745		475,946		'
Related allowance for credit losses	181,389		221,124		'
Commercial [Member] | Domestic [Member] | Construction [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Recorded loan balance, Requiring an allowance for credit losses	30,537		35,581		'
Recorded loan balance, Not requiring an allowance for credit losses	13,298	[2]	16,921	[2]	'
Recorded loan balance, Total	43,835	[3]	52,502	[3]	'
Unpaid principal balance	45,323		59,411		'
Related allowance for credit losses	18,731		22,577		'
Commercial [Member] | Domestic [Member] | Real Estate [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Recorded loan balance, Requiring an allowance for credit losses	141,225		139,146		'
Recorded loan balance, Not requiring an allowance for credit losses	63,625	[2]	100,670	[2]	'
Recorded loan balance, Total	204,850	[3]	239,816	[3]	'
Unpaid principal balance	212,353		247,657		'
Related allowance for credit losses	52,814		55,286		'
Commercial [Member] | Domestic [Member] | Services [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Recorded loan balance, Requiring an allowance for credit losses	101,969		122,792		'
Recorded loan balance, Not requiring an allowance for credit losses	27,342	[2]	37,774	[2]	'
Recorded loan balance, Total	129,311	[3]	160,566	[3]	'
Unpaid principal balance	139,299		166,510		'
Related allowance for credit losses	54,469		67,171		'
Commercial [Member] | Domestic [Member] | Wholesale And Retail [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Recorded loan balance, Requiring an allowance for credit losses	248,932		309,892		'
Recorded loan balance, Not requiring an allowance for credit losses	58,633	[2]	62,274	[2]	'
Recorded loan balance, Total	307,565	[3]	372,166	[3]	'
Unpaid principal balance	317,614		380,292		'
Related allowance for credit losses	169,523		209,634		'
Commercial [Member] | Domestic [Member] | Banks And Other Financial Institutions [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Recorded loan balance, Requiring an allowance for credit losses	8,295		15,201		'
Recorded loan balance, Not requiring an allowance for credit losses	94	[2]	121	[2]	'
Recorded loan balance, Total	8,389	[3]	15,322	[3]	'
Unpaid principal balance	8,403		17,425		'
Related allowance for credit losses	6,954		8,040		'
Commercial [Member] | Domestic [Member] | Communication And Information Services [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Recorded loan balance, Requiring an allowance for credit losses	25,443		40,233		'
Recorded loan balance, Not requiring an allowance for credit losses	11,509	[2]	12,954	[2]	'
Recorded loan balance, Total	36,952	[3]	53,187	[3]	'
Unpaid principal balance	39,292		55,021		'
Related allowance for credit losses	16,473		23,719		'
Commercial [Member] | Domestic [Member] | Other Industries [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Recorded loan balance, Requiring an allowance for credit losses	36,821		42,991		'
Recorded loan balance, Not requiring an allowance for credit losses	9,634	[2]	9,794	[2]	'
Recorded loan balance, Total	46,455	[3]	52,785	[3]	'
Unpaid principal balance	47,866		53,754		'
Related allowance for credit losses	26,903		33,485		'
Commercial [Member] | Domestic [Member] | Consumer [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Recorded loan balance, Requiring an allowance for credit losses	44,245		52,145		'
Recorded loan balance, Not requiring an allowance for credit losses	18,077	[2]	21,701	[2]	'
Recorded loan balance, Total	62,322	[3]	73,846	[3]	'
Unpaid principal balance	70,425		81,164		'
Related allowance for credit losses	16,968		21,311		'
Commercial [Member] | Foreign-excluding MUAH [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Recorded loan balance, Requiring an allowance for credit losses	'		199,890		'
Recorded loan balance, Not requiring an allowance for credit losses	'		299	[2]	'
Recorded loan balance, Total	'		200,189	[3]	'
Unpaid principal balance	'		200,517		'
Related allowance for credit losses	'		122,371		'
Commercial [Member] | Foreign-excluding MUAH and Krungsri [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Recorded loan balance, Requiring an allowance for credit losses	193,360		'		'
Recorded loan balance, Not requiring an allowance for credit losses	2,360	[2]	'		'
Recorded loan balance, Total	195,720	[3]	'		'
Unpaid principal balance	195,935		'		'
Related allowance for credit losses	96,218		'		'
Commercial [Member] | Loans Acquired With Deteriorated Credit Quality [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Recorded loan balance, Requiring an allowance for credit losses	18,787		30,927		'
Recorded loan balance, Not requiring an allowance for credit losses	186	[2]	76	[2]	'
Recorded loan balance, Total	18,973	[3]	31,003	[3]	'
Unpaid principal balance	32,078		47,916		'
Related allowance for credit losses	6,111		9,944		'
Residential [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Recorded loan balance, Requiring an allowance for credit losses	203,600		300,231		'
Recorded loan balance, Not requiring an allowance for credit losses	11,563	[2]	13,756	[2]	'
Recorded loan balance, Total	215,163	[3]	313,987	[3]	'
Unpaid principal balance	255,627		363,439		'
Related allowance for credit losses	70,393		118,753		'
Accrual TDRs included in impaired loans	99,359		178,576		'
Card [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Recorded loan balance, Requiring an allowance for credit losses	102,852		123,567		'
Recorded loan balance, Not requiring an allowance for credit losses	762	[2]	806	[2]	'
Recorded loan balance, Total	103,614	[3]	124,373	[3]	'
Unpaid principal balance	115,819		139,196		'
Related allowance for credit losses	29,244		37,901		'
Accrual TDRs included in impaired loans	51,834		61,195		'
MUAH [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Recorded loan balance, Requiring an allowance for credit losses	39,552		31,293		'
Recorded loan balance, Not requiring an allowance for credit losses	24,457	[2]	22,966	[2]	'
Recorded loan balance, Total	64,009	[3]	54,259	[3]	'
Unpaid principal balance	71,210		60,732		'
Related allowance for credit losses	4,131		3,645		'
Accrual TDRs included in impaired loans	38,666		34,769		'
Krungsri [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Recorded loan balance, Requiring an allowance for credit losses	'	[4]	'		'
Recorded loan balance, Not requiring an allowance for credit losses	'	[2],[4]	'		'
Recorded loan balance, Total	'	[3],[4]	'		'
Unpaid principal balance	'	[4]	'		'
Related allowance for credit losses	'	[4]	'		'
[1]	In addition to impaired loans presented in the above table, there were loans held for sale that were impaired of ¥818 million and nil at March 31, 2013 and 2014, respectively.
[2]	These loans do not require an allowance for credit losses because the fair values of the impaired loans equal or exceed the recorded investments in the loans.
[3]	Included in impaired loans at March 31, 2013 and 2014 are accrual TDRs as follows: ¥671,083 million and ¥642,408 million-Commercial; ¥ 178,576 million and ¥99,359 million-Residential; ¥61,195 million and ¥51,834 million-Card; and ¥34,769million and ¥38,666 million-MUAH, respectively.
[4]	For the Krungsri segment, acquired loans were recorded at their fair values as of the acquisition date, and there have been no indications that allowance for credit loss is necessary for these loans since then. Therefore, no impaired loans were stated in the above table.

Loans_And_Allowance_For_Credit6

Loans And Allowance For Credit Losses (Average Recorded Loan Balance And Recognized Interest Income On Impaired Loans By Class) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Financing Receivable, Impaired [Line Items]	'	'	'
Average recorded loan balance	¥ 2,016,605	¥ 2,122,465	¥ 1,958,127
Recognized interest income	41,629	42,796	39,230
Commercial [Member] | Domestic [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Average recorded loan balance	1,359,635	1,414,309	1,270,856
Recognized interest income	23,283	24,051	21,356
Commercial [Member] | Domestic [Member] | Manufacturing [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Average recorded loan balance	430,415	418,402	333,409
Recognized interest income	6,954	7,017	5,656
Commercial [Member] | Domestic [Member] | Construction [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Average recorded loan balance	47,818	54,687	63,215
Recognized interest income	982	1,174	1,370
Commercial [Member] | Domestic [Member] | Real Estate [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Average recorded loan balance	228,045	198,102	173,739
Recognized interest income	3,472	2,747	2,476
Commercial [Member] | Domestic [Member] | Services [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Average recorded loan balance	140,627	170,025	176,047
Recognized interest income	2,806	3,214	3,203
Commercial [Member] | Domestic [Member] | Wholesale And Retail [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Average recorded loan balance	339,619	376,001	326,440
Recognized interest income	5,857	6,215	5,239
Commercial [Member] | Domestic [Member] | Banks And Other Financial Institutions [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Average recorded loan balance	10,719	11,506	9,812
Recognized interest income	170	162	85
Commercial [Member] | Domestic [Member] | Communication And Information Services [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Average recorded loan balance	44,417	51,897	55,387
Recognized interest income	945	1,061	1,152
Commercial [Member] | Domestic [Member] | Other Industries [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Average recorded loan balance	49,612	58,081	57,612
Recognized interest income	985	1,271	927
Commercial [Member] | Domestic [Member] | Consumer [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Average recorded loan balance	68,363	75,608	75,195
Recognized interest income	1,112	1,190	1,248
Commercial [Member] | Foreign-excluding MUAH and Krungsri [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Average recorded loan balance	187,656	172,471	138,900
Recognized interest income	2,848	2,487	1,016
Commercial [Member] | Loans Acquired With Deteriorated Credit Quality [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Average recorded loan balance	30,101	32,964	35,307
Recognized interest income	1,659	2,028	1,983
Residential [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Average recorded loan balance	264,277	320,183	318,512
Recognized interest income	5,153	6,006	6,549
Card [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Average recorded loan balance	113,993	135,581	149,255
Recognized interest income	5,218	6,504	6,972
MUAH [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Average recorded loan balance	60,943	46,957	45,297
Recognized interest income	3,468	1,720	1,354
Krungsri [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Average recorded loan balance	'	'	'
Recognized interest income	'	'	'

Loans_And_Allowance_For_Credit7

Loans And Allowance For Credit Losses (Rollforward Of Accrual TDRs And Other Impaired Loans) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Accrual TDRs:	'		'
Balance at beginning of fiscal year	¥ 945,623		¥ 892,823
Additions (new accrual TDR status)	231,063		302,267
Transfers to other impaired loans (including nonaccrual TDRs)	-48,295		-56,064
Loans sold	-7,698		-49
Principal payments and other	-288,426		-193,354
Balance at end of fiscal year	832,267		945,623
Other impaired loans (including nonaccrual TDRs):	'		'
Balance at beginning of fiscal year	1,255,143		1,139,045
Additions (new other impaired loans (including nonaccrual TDRs) status)	313,086	[1]	500,063	[1]
Charge-off	-123,037		-46,835
Transfers to accrual TDRs	-63,828		-28,474
Loans sold	-39,879		-18,618
Principal payments and other	-312,725		-290,038
Balance at end of fiscal year	1,028,760		1,255,143
Card [Member]	'		'
Accrual TDRs:	'		'
Balance at beginning of fiscal year	61,195		'
Balance at end of fiscal year	51,834		61,195
Other impaired loans (including nonaccrual TDRs):	'		'
Additions of nonaccrual TDRs	11,054		16,903
MUAH [Member]	'		'
Accrual TDRs:	'		'
Balance at beginning of fiscal year	34,769		'
Balance at end of fiscal year	38,666		34,769
Other impaired loans (including nonaccrual TDRs):	'		'
Additions of nonaccrual TDRs	¥ 16,228		¥ 17,513
[1]	Included in additions of other impaired loans for the fiscal years ended March 31, 2013 and 2014 are nonaccrual TDRs as follows: ¥16,903 million and ¥11,054 million-Card; and ¥17,513 million and ¥16,228 million-MUAH, respectively.

Loans_And_Allowance_For_Credit8

Loans And Allowance For Credit Losses (Troubled Debt Restructurings By Class) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Financing Receivable, Modifications [Line Items]	'		'
Troubled debt restructurings, Pre-modification outstanding recorded investment	¥ 282,665	[1]	¥ 339,296	[2]
Troubled debt restructurings, Post-modification outstanding recorded investment	258,345	[1]	336,683	[2]
Troubled debt restructurings that subsequently defaulted, Recorded Investment	29,904		14,680
Troubled debt restructurings, Outstanding recorded investment balances	907,744		1,026,880
Commercial [Member] | Domestic [Member]	'		'
Financing Receivable, Modifications [Line Items]	'		'
Troubled debt restructurings, Pre-modification outstanding recorded investment	175,011	[1],[3],[4]	222,125	[2],[3],[5]
Troubled debt restructurings, Post-modification outstanding recorded investment	151,505	[1],[3],[4]	222,125	[2],[3],[5]
Troubled debt restructurings that subsequently defaulted, Recorded Investment	22,503	[3],[4]	6,741	[3],[5]
Troubled debt restructurings, Outstanding recorded investment balances	528,133	[3],[4]	567,926	[3],[5]
Commercial [Member] | Domestic [Member] | Manufacturing [Member]	'		'
Financing Receivable, Modifications [Line Items]	'		'
Troubled debt restructurings, Pre-modification outstanding recorded investment	93,968	[1],[3],[4]	131,105	[2],[3],[5]
Troubled debt restructurings, Post-modification outstanding recorded investment	70,462	[1],[3],[4]	131,105	[2],[3],[5]
Troubled debt restructurings that subsequently defaulted, Recorded Investment	11,644	[3],[4]	2,729	[3],[5]
Troubled debt restructurings, Outstanding recorded investment balances	257,049	[3],[4]	247,133	[3],[5]
Commercial [Member] | Domestic [Member] | Construction [Member]	'		'
Financing Receivable, Modifications [Line Items]	'		'
Troubled debt restructurings, Pre-modification outstanding recorded investment	3,435	[1],[3],[4]	3,921	[2],[3],[5]
Troubled debt restructurings, Post-modification outstanding recorded investment	3,435	[1],[3],[4]	3,921	[2],[3],[5]
Troubled debt restructurings that subsequently defaulted, Recorded Investment	86	[3],[4]	'
Troubled debt restructurings, Outstanding recorded investment balances	13,751	[3],[4]	15,130	[3],[5]
Commercial [Member] | Domestic [Member] | Real Estate [Member]	'		'
Financing Receivable, Modifications [Line Items]	'		'
Troubled debt restructurings, Pre-modification outstanding recorded investment	21,977	[1],[3],[4]	17,409	[2],[3],[5]
Troubled debt restructurings, Post-modification outstanding recorded investment	21,977	[1],[3],[4]	17,409	[2],[3],[5]
Troubled debt restructurings that subsequently defaulted, Recorded Investment	1,174	[3],[4]	1,444	[3],[5]
Troubled debt restructurings, Outstanding recorded investment balances	64,028	[3],[4]	54,221	[3],[5]
Commercial [Member] | Domestic [Member] | Services [Member]	'		'
Financing Receivable, Modifications [Line Items]	'		'
Troubled debt restructurings, Pre-modification outstanding recorded investment	13,149	[1],[3],[4]	12,564	[2],[3],[5]
Troubled debt restructurings, Post-modification outstanding recorded investment	13,149	[1],[3],[4]	12,564	[2],[3],[5]
Troubled debt restructurings that subsequently defaulted, Recorded Investment	1,481	[3],[4]	295	[3],[5]
Troubled debt restructurings, Outstanding recorded investment balances	57,480	[3],[4]	74,777	[3],[5]
Commercial [Member] | Domestic [Member] | Wholesale And Retail [Member]	'		'
Financing Receivable, Modifications [Line Items]	'		'
Troubled debt restructurings, Pre-modification outstanding recorded investment	32,458	[1],[3],[4]	42,061	[2],[3],[5]
Troubled debt restructurings, Post-modification outstanding recorded investment	32,458	[1],[3],[4]	42,061	[2],[3],[5]
Troubled debt restructurings that subsequently defaulted, Recorded Investment	5,834	[3],[4]	1,024	[3],[5]
Troubled debt restructurings, Outstanding recorded investment balances	95,809	[3],[4]	122,986	[3],[5]
Commercial [Member] | Domestic [Member] | Banks And Other Financial Institutions [Member]	'		'
Financing Receivable, Modifications [Line Items]	'		'
Troubled debt restructurings, Pre-modification outstanding recorded investment	1	[1],[3],[4]	889	[2],[3],[5]
Troubled debt restructurings, Post-modification outstanding recorded investment	1	[1],[3],[4]	889	[2],[3],[5]
Troubled debt restructurings that subsequently defaulted, Recorded Investment	'		330	[3],[5]
Troubled debt restructurings, Outstanding recorded investment balances	1,156	[3],[4]	1,329	[3],[5]
Commercial [Member] | Domestic [Member] | Communication And Information Services [Member]	'		'
Financing Receivable, Modifications [Line Items]	'		'
Troubled debt restructurings, Pre-modification outstanding recorded investment	1,802	[1],[3],[4]	8,442	[2],[3],[5]
Troubled debt restructurings, Post-modification outstanding recorded investment	1,802	[1],[3],[4]	8,442	[2],[3],[5]
Troubled debt restructurings that subsequently defaulted, Recorded Investment	1,639	[3],[4]	434	[3],[5]
Troubled debt restructurings, Outstanding recorded investment balances	11,996	[3],[4]	21,246	[3],[5]
Commercial [Member] | Domestic [Member] | Other Industries [Member]	'		'
Financing Receivable, Modifications [Line Items]	'		'
Troubled debt restructurings, Pre-modification outstanding recorded investment	4,414	[1],[3],[4]	1,927	[2],[3],[5]
Troubled debt restructurings, Post-modification outstanding recorded investment	4,414	[1],[3],[4]	1,927	[2],[3],[5]
Troubled debt restructurings that subsequently defaulted, Recorded Investment	152	[3],[4]	415	[3],[5]
Troubled debt restructurings, Outstanding recorded investment balances	10,496	[3],[4]	10,321	[3],[5]
Commercial [Member] | Domestic [Member] | Consumer [Member]	'		'
Financing Receivable, Modifications [Line Items]	'		'
Troubled debt restructurings, Pre-modification outstanding recorded investment	3,807	[1],[3],[4]	3,807	[2],[3],[5]
Troubled debt restructurings, Post-modification outstanding recorded investment	3,807	[1],[3],[4]	3,807	[2],[3],[5]
Troubled debt restructurings that subsequently defaulted, Recorded Investment	493	[3],[4]	70	[3],[5]
Troubled debt restructurings, Outstanding recorded investment balances	16,368	[3],[4]	20,783	[3],[5]
Commercial [Member] | Foreign-excluding MUAH [Member]	'		'
Financing Receivable, Modifications [Line Items]	'		'
Troubled debt restructurings, Pre-modification outstanding recorded investment	'		10,142	[2],[3],[5]
Troubled debt restructurings, Post-modification outstanding recorded investment	'		10,142	[2],[3],[5]
Troubled debt restructurings that subsequently defaulted, Recorded Investment	'		419	[3],[5]
Troubled debt restructurings, Outstanding recorded investment balances	'		103,157	[3],[5]
Commercial [Member] | Foreign-excluding MUAH and Krungsri [Member]	'		'
Financing Receivable, Modifications [Line Items]	'		'
Troubled debt restructurings, Pre-modification outstanding recorded investment	20,175	[1],[3],[4]	'
Troubled debt restructurings, Post-modification outstanding recorded investment	20,175	[1],[3],[4]	'
Troubled debt restructurings, Outstanding recorded investment balances	114,275	[3],[4]	'
Commercial [Member] | Loans Acquired With Deteriorated Credit Quality [Member]	'		'
Financing Receivable, Modifications [Line Items]	'		'
Troubled debt restructurings, Pre-modification outstanding recorded investment	7,616	[1],[3],[4]	524	[2],[3],[5]
Troubled debt restructurings, Post-modification outstanding recorded investment	7,616	[1],[3],[4]	524	[2],[3],[5]
Troubled debt restructurings that subsequently defaulted, Recorded Investment	'		509	[3],[5]
Residential [Member]	'		'
Financing Receivable, Modifications [Line Items]	'		'
Troubled debt restructurings, Pre-modification outstanding recorded investment	32,777	[1],[3],[4]	50,005	[2],[3],[5]
Troubled debt restructurings, Post-modification outstanding recorded investment	32,777	[1],[3],[4]	50,005	[2],[3],[5]
Troubled debt restructurings that subsequently defaulted, Recorded Investment	474	[3],[4]	349	[3],[5]
Troubled debt restructurings, Outstanding recorded investment balances	99,359	[3],[4]	178,576	[3],[5]
Card [Member]	'		'
Financing Receivable, Modifications [Line Items]	'		'
Troubled debt restructurings, Pre-modification outstanding recorded investment	17,141	[1],[4],[6]	26,409	[2],[5],[7]
Troubled debt restructurings, Post-modification outstanding recorded investment	16,869	[1],[4],[6]	26,055	[2],[5],[7]
Troubled debt restructurings that subsequently defaulted, Recorded Investment	4,015	[4],[6]	4,507	[5],[7]
Troubled debt restructurings, Outstanding recorded investment balances	103,614	[4],[6]	124,373	[5],[7]
Troubled debt restructurings on nonaccrual loans, Outstanding recorded investment balances	51,780		63,178
MUAH [Member]	'		'
Financing Receivable, Modifications [Line Items]	'		'
Troubled debt restructurings, Pre-modification outstanding recorded investment	29,945	[1],[4],[6]	30,091	[2],[5],[7]
Troubled debt restructurings, Post-modification outstanding recorded investment	29,403	[1],[4],[6]	27,832	[2],[5],[7]
Troubled debt restructurings that subsequently defaulted, Recorded Investment	2,912	[4],[6]	2,155	[5],[7]
Troubled debt restructurings, Outstanding recorded investment balances	62,363	[4],[6]	52,848	[5],[7]
Troubled debt restructurings on nonaccrual loans, Outstanding recorded investment balances	23,697		18,079
Krungsri [Member]	'		'
Financing Receivable, Modifications [Line Items]	'		'
Troubled debt restructurings, Pre-modification outstanding recorded investment	'	[1],[6]	'
Troubled debt restructurings, Post-modification outstanding recorded investment	'	[1],[6]	'
Troubled debt restructurings that subsequently defaulted, Recorded Investment	'	[6]	'
Troubled debt restructurings, Outstanding recorded investment balances	'	[6]	'
[1]	From the fiscal year ended March 31, 2014, the MUFG Group started to report the amounts of TDRs which include only the first modification for those which are modified more than once during the same period, in place of the previously reported amounts which include accumulated loan modification activity, such as reduction in stated rate or extension of stated maturity date, that may occur on multiple occasions during the same period.
[2]	From the fiscal year ended March 31, 2014, the MUFG Group started to report the amounts of TDRs which include only the first modification for those which are modified more than once during the same period, in place of the previously reported amounts which include accumulated loan modification activity, such as reduction in stated rate or extension of stated maturity date, that may occur on multiple occasions during the same period. The amounts for the fiscal year ended March 31, 2013 were revised to conform to the current year presentation and enable comparisons between the relevant amounts for the fiscal years ended March 31, 2013 and 2014, respectively.
[3]	TDRs for the Commercial and Residential segments include accruing loans with concessions granted, and do not include nonaccrual loans with concessions granted.
[4]	For the fiscal year ended March 31, 2014, extension of the stated maturity date of loans was the primary concession type in the Commercial and Residential segments, whereas reduction in the stated rate and payment deferrals were the primary concession types in the Card and MUAH segments, respectively.
[5]	For the fiscal year ended March 31, 2013, extension of the stated maturity date of loans was the primary concession type in the Commercial and Residential segments, whereas reduction in the stated rate and payment deferrals were the primary concession types in the Card and MUAH segments, respectively.
[6]	TDRs for the Card, MUAH and Krungsri segments include accrual and nonaccrual loans. Included in the outstanding recorded investment balances as of March 31, 2014 are nonaccrual TDRs as follows: ¥51,780 million-Card and ¥23,697 million-MUAH, respectively.
[7]	TDRs for the Card and MUAH segments include accrual and nonaccrual loans. Included in the outstanding recorded investment balances as of March 31, 2013 are nonaccrual TDRs as follows: ¥63,178 million-Card and ¥18,079 million-MUAH, respectively.

Loans_And_Allowance_For_Credit9

Loans And Allowance For Credit Losses (Credit Quality Indicators Of Loans By Class) (Detail) (JPY ¥)	Mar. 31, 2014		Mar. 31, 2013
In Millions, unless otherwise specified
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	¥ 84,587,528	[1]	¥ 77,550,362	[1]
MUAH's FDIC covered loans acquired with deteriorated credit quality and small business loans which are not individually rated	59,963		66,892
Commercial [Member] | Domestic [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	54,895,738	[1]	53,488,099	[1]
Commercial [Member] | Domestic [Member] | Manufacturing [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	11,530,107	[1]	11,755,777	[1]
Commercial [Member] | Domestic [Member] | Construction [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	980,046	[1]	1,055,359	[1]
Commercial [Member] | Domestic [Member] | Real Estate [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	10,605,152	[1]	10,654,379	[1]
Commercial [Member] | Domestic [Member] | Services [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	2,679,580	[1]	2,866,443	[1]
Commercial [Member] | Domestic [Member] | Wholesale And Retail [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	8,445,977	[1]	8,294,458	[1]
Commercial [Member] | Domestic [Member] | Banks And Other Financial Institutions [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	3,984,994	[1]	3,620,917	[1]
Commercial [Member] | Domestic [Member] | Communication And Information Services [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	1,443,036	[1]	1,313,871	[1]
Commercial [Member] | Domestic [Member] | Other Industries [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	13,492,802	[1]	12,186,346	[1]
Commercial [Member] | Domestic [Member] | Consumer [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	1,734,044	[1]	1,740,549	[1]
Commercial [Member] | Foreign-excluding MUAH [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	'		23,960,950	[1]
Commercial [Member] | Foreign-excluding MUAH and Krungsri [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	29,616,050	[1]	'
Commercial [Member] | Loans Acquired With Deteriorated Credit Quality [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	75,740	[1]	101,313	[1]
Residential [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	14,978,305	[1]	15,201,233	[1]
Loans, Accrual	14,864,856		15,067,823
Loans, Nonaccrual	113,449		133,410
Card [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	608,621	[1]	671,605	[1]
Loans, Accrual	535,511		582,510
Loans, Nonaccrual	73,110		89,095
MUAH [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	7,179,588	[1],[2]	5,187,354	[1],[2]
MUAH [Member] | Credit Quality Based on the Number of Delinquencies [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans, Accrual	3,003,826		2,260,777
Loans, Nonaccrual	34,989		31,342
MUAH [Member] | Credit Quality Based on Internal Credit Ratings [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans, Pass	3,946,961		2,745,365
Loans, Special Mention	98,645		69,437
Loans, Classified	95,167		80,433
Krungsri [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	3,075,861	[1]	'
Loans, Normal	2,923,087		'
Loans, Special Mention	101,184		'
Loans, Substandard or Doubtful or Doubtful of Loss	51,590		'
Normal [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	79,040,504		70,471,370
Normal [Member] | Commercial [Member] | Domestic [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	50,608,911		48,099,471
Normal [Member] | Commercial [Member] | Domestic [Member] | Manufacturing [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	10,032,892		10,062,399
Normal [Member] | Commercial [Member] | Domestic [Member] | Construction [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	786,640		797,513
Normal [Member] | Commercial [Member] | Domestic [Member] | Real Estate [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	9,747,076		9,570,082
Normal [Member] | Commercial [Member] | Domestic [Member] | Services [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	2,279,379		2,417,737
Normal [Member] | Commercial [Member] | Domestic [Member] | Wholesale And Retail [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	7,582,548		7,297,267
Normal [Member] | Commercial [Member] | Domestic [Member] | Banks And Other Financial Institutions [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	3,959,266		3,239,735
Normal [Member] | Commercial [Member] | Domestic [Member] | Communication And Information Services [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	1,349,217		1,183,208
Normal [Member] | Commercial [Member] | Domestic [Member] | Other Industries [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	13,274,021		11,951,463
Normal [Member] | Commercial [Member] | Domestic [Member] | Consumer [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	1,597,872		1,580,067
Normal [Member] | Commercial [Member] | Foreign-excluding MUAH [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	'		22,340,927
Normal [Member] | Commercial [Member] | Foreign-excluding MUAH and Krungsri [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	28,399,163		'
Normal [Member] | Commercial [Member] | Loans Acquired With Deteriorated Credit Quality [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	32,430		30,972
Close Watch [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	4,714,273		6,058,958
Close Watch [Member] | Commercial [Member] | Domestic [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	3,549,135		4,476,760
Close Watch [Member] | Commercial [Member] | Domestic [Member] | Manufacturing [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	1,329,356		1,481,403
Close Watch [Member] | Commercial [Member] | Domestic [Member] | Construction [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	163,313		220,465
Close Watch [Member] | Commercial [Member] | Domestic [Member] | Real Estate [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	716,302		898,619
Close Watch [Member] | Commercial [Member] | Domestic [Member] | Services [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	328,142		362,719
Close Watch [Member] | Commercial [Member] | Domestic [Member] | Wholesale And Retail [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	651,659		747,938
Close Watch [Member] | Commercial [Member] | Domestic [Member] | Banks And Other Financial Institutions [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	18,494		367,189
Close Watch [Member] | Commercial [Member] | Domestic [Member] | Communication And Information Services [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	68,863		98,722
Close Watch [Member] | Commercial [Member] | Domestic [Member] | Other Industries [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	182,727		192,291
Close Watch [Member] | Commercial [Member] | Domestic [Member] | Consumer [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	90,279		107,414
Close Watch [Member] | Commercial [Member] | Foreign-excluding MUAH [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	'		1,530,191
Close Watch [Member] | Commercial [Member] | Foreign-excluding MUAH and Krungsri [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	1,132,038		'
Close Watch [Member] | Commercial [Member] | Loans Acquired With Deteriorated Credit Quality [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	33,100		52,007
Likely To Become Bankrupt Or Legally / Virtually Bankrupt [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	832,751		1,020,034
Likely To Become Bankrupt Or Legally / Virtually Bankrupt [Member] | Commercial [Member] | Domestic [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	737,692		911,868
Likely To Become Bankrupt Or Legally / Virtually Bankrupt [Member] | Commercial [Member] | Domestic [Member] | Manufacturing [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	167,859		211,975
Likely To Become Bankrupt Or Legally / Virtually Bankrupt [Member] | Commercial [Member] | Domestic [Member] | Construction [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	30,093		37,381
Likely To Become Bankrupt Or Legally / Virtually Bankrupt [Member] | Commercial [Member] | Domestic [Member] | Real Estate [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	141,774		185,678
Likely To Become Bankrupt Or Legally / Virtually Bankrupt [Member] | Commercial [Member] | Domestic [Member] | Services [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	72,059		85,987
Likely To Become Bankrupt Or Legally / Virtually Bankrupt [Member] | Commercial [Member] | Domestic [Member] | Wholesale And Retail [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	211,770		249,253
Likely To Become Bankrupt Or Legally / Virtually Bankrupt [Member] | Commercial [Member] | Domestic [Member] | Banks And Other Financial Institutions [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	7,234		13,993
Likely To Become Bankrupt Or Legally / Virtually Bankrupt [Member] | Commercial [Member] | Domestic [Member] | Communication And Information Services [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	24,956		31,941
Likely To Become Bankrupt Or Legally / Virtually Bankrupt [Member] | Commercial [Member] | Domestic [Member] | Other Industries [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	36,054		42,592
Likely To Become Bankrupt Or Legally / Virtually Bankrupt [Member] | Commercial [Member] | Domestic [Member] | Consumer [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	45,893		53,068
Likely To Become Bankrupt Or Legally / Virtually Bankrupt [Member] | Commercial [Member] | Foreign-excluding MUAH [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	'		89,832
Likely To Become Bankrupt Or Legally / Virtually Bankrupt [Member] | Commercial [Member] | Foreign-excluding MUAH and Krungsri [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	84,849		'
Likely To Become Bankrupt Or Legally / Virtually Bankrupt [Member] | Commercial [Member] | Loans Acquired With Deteriorated Credit Quality [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Loans classified by borrowing grade	¥ 10,210		¥ 18,334
[1]	Total loans in the above table do not include loans held for sale.
[2]	Total loans of MUAH do not include Federal Deposit Insurance Corporation ("FDIC") covered loans and small business loans which are not individually rated totaling ¥66,892 million and ¥59,963 million as of March 31, 2013 and 2014, respectively. The MUFG Group will be reimbursed for a substantial portion of any future losses on FDIC covered loans under the terms of the FDIC loss share agreements.

Recovered_Sheet1

Loans And Allowance For Credit Losses (Ages Of Past Due Loans By Class) (Detail) (JPY ¥)	Mar. 31, 2014		Mar. 31, 2013
In Millions, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Loans, 1-3 months past due	¥ 233,602		¥ 211,285
Loans, greater than 3 months past due	185,038		215,359
Loans, total past due	418,640		426,644
Loans, current	109,800,250		98,016,429
Total loans, excluding loans held for sale and loans acquired with deteriorated credit quality	110,218,890	[1],[2]	98,443,073	[1],[2]
Loans, greater than 90 days past due and accruing	47,927		40,738
MUAH's FDIC covered loans not subject to the guidance on loans and debt securities acquired with deteriorated credit quality	1,600		2,039
Commercial [Member] | Domestic [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Loans, 1-3 months past due	26,210		45,915
Loans, greater than 3 months past due	53,632		84,823
Loans, total past due	79,842		130,738
Loans, current	54,815,896		53,357,361
Total loans, excluding loans held for sale and loans acquired with deteriorated credit quality	54,895,738	[1],[2]	53,488,099	[1],[2]
Loans, greater than 90 days past due and accruing	6,543		7,545
Commercial [Member] | Domestic [Member] | Manufacturing [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Loans, 1-3 months past due	5,363		6,963
Loans, greater than 3 months past due	7,192		15,307
Loans, total past due	12,555		22,270
Loans, current	11,517,552		11,733,507
Total loans, excluding loans held for sale and loans acquired with deteriorated credit quality	11,530,107	[1],[2]	11,755,777	[1],[2]
Loans, greater than 90 days past due and accruing	'		24
Commercial [Member] | Domestic [Member] | Construction [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Loans, 1-3 months past due	718		2,118
Loans, greater than 3 months past due	664		1,881
Loans, total past due	1,382		3,999
Loans, current	978,664		1,051,360
Total loans, excluding loans held for sale and loans acquired with deteriorated credit quality	980,046	[1],[2]	1,055,359	[1],[2]
Loans, greater than 90 days past due and accruing	1		37
Commercial [Member] | Domestic [Member] | Real Estate [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Loans, 1-3 months past due	4,859		5,339
Loans, greater than 3 months past due	9,689		15,071
Loans, total past due	14,548		20,410
Loans, current	10,590,604		10,633,969
Total loans, excluding loans held for sale and loans acquired with deteriorated credit quality	10,605,152	[1],[2]	10,654,379	[1],[2]
Loans, greater than 90 days past due and accruing	2,233		2,255
Commercial [Member] | Domestic [Member] | Services [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Loans, 1-3 months past due	4,315		12,215
Loans, greater than 3 months past due	2,781		7,537
Loans, total past due	7,096		19,752
Loans, current	2,672,484		2,846,691
Total loans, excluding loans held for sale and loans acquired with deteriorated credit quality	2,679,580	[1],[2]	2,866,443	[1],[2]
Loans, greater than 90 days past due and accruing	10		80
Commercial [Member] | Domestic [Member] | Wholesale And Retail [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Loans, 1-3 months past due	4,624		10,106
Loans, greater than 3 months past due	22,829		24,050
Loans, total past due	27,453		34,156
Loans, current	8,418,524		8,260,302
Total loans, excluding loans held for sale and loans acquired with deteriorated credit quality	8,445,977	[1],[2]	8,294,458	[1],[2]
Loans, greater than 90 days past due and accruing	3		82
Commercial [Member] | Domestic [Member] | Banks And Other Financial Institutions [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Loans, 1-3 months past due	1		'
Loans, greater than 3 months past due	52		72
Loans, total past due	53		72
Loans, current	3,984,941		3,620,845
Total loans, excluding loans held for sale and loans acquired with deteriorated credit quality	3,984,994	[1],[2]	3,620,917	[1],[2]
Loans, greater than 90 days past due and accruing	'		2
Commercial [Member] | Domestic [Member] | Communication And Information Services [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Loans, 1-3 months past due	680		2,286
Loans, greater than 3 months past due	1,371		2,835
Loans, total past due	2,051		5,121
Loans, current	1,440,985		1,308,750
Total loans, excluding loans held for sale and loans acquired with deteriorated credit quality	1,443,036	[1],[2]	1,313,871	[1],[2]
Loans, greater than 90 days past due and accruing	'		12
Commercial [Member] | Domestic [Member] | Other Industries [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Loans, 1-3 months past due	667		1,592
Loans, greater than 3 months past due	1,554		6,809
Loans, total past due	2,221		8,401
Loans, current	13,490,581		12,177,945
Total loans, excluding loans held for sale and loans acquired with deteriorated credit quality	13,492,802	[1],[2]	12,186,346	[1],[2]
Loans, greater than 90 days past due and accruing	'		11
Commercial [Member] | Domestic [Member] | Consumer [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Loans, 1-3 months past due	4,983		5,296
Loans, greater than 3 months past due	7,500		11,261
Loans, total past due	12,483		16,557
Loans, current	1,721,561		1,723,992
Total loans, excluding loans held for sale and loans acquired with deteriorated credit quality	1,734,044	[1],[2]	1,740,549	[1],[2]
Loans, greater than 90 days past due and accruing	4,296		5,042
Commercial [Member] | Foreign-excluding MUAH [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Loans, 1-3 months past due	'		19,806
Loans, greater than 3 months past due	'		17,686
Loans, total past due	'		37,492
Loans, current	'		23,923,458
Total loans, excluding loans held for sale and loans acquired with deteriorated credit quality	'		23,960,950	[1],[2]
Loans, greater than 90 days past due and accruing	'		206
Commercial [Member] | Foreign-excluding MUAH and Krungsri [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Loans, 1-3 months past due	3,283		'
Loans, greater than 3 months past due	7,109		'
Loans, total past due	10,392		'
Loans, current	29,605,658		'
Total loans, excluding loans held for sale and loans acquired with deteriorated credit quality	29,616,050	[1],[2]	'
Loans, greater than 90 days past due and accruing	357		'
Residential [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Loans, 1-3 months past due	85,549		91,148
Loans, greater than 3 months past due	54,462		55,132
Loans, total past due	140,011		146,280
Loans, current	14,822,995		15,037,723
Total loans, excluding loans held for sale and loans acquired with deteriorated credit quality	14,963,006	[1],[2]	15,184,003	[1],[2]
Loans, greater than 90 days past due and accruing	40,500		32,918
Card [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Loans, 1-3 months past due	21,653		23,680
Loans, greater than 3 months past due	33,381		39,796
Loans, total past due	55,034		63,476
Loans, current	540,886		594,896
Total loans, excluding loans held for sale and loans acquired with deteriorated credit quality	595,920	[1],[2]	658,372	[1],[2]
MUAH [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Loans, 1-3 months past due	30,036		30,736
Loans, greater than 3 months past due	14,333		17,922
Loans, total past due	44,369		48,658
Loans, current	7,078,621		5,102,991
Total loans, excluding loans held for sale and loans acquired with deteriorated credit quality	7,122,990	[1],[2]	5,151,649	[1],[2]
Loans, greater than 90 days past due and accruing	527		69
Krungsri [Member]	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Loans, 1-3 months past due	66,871		'
Loans, greater than 3 months past due	22,121		'
Loans, total past due	88,992		'
Loans, current	2,936,194		'
Total loans, excluding loans held for sale and loans acquired with deteriorated credit quality	¥ 3,025,186	[1],[2]	'
[1]	Total loans in the above table do not include loans held for sale and loans acquired with deteriorated credit quality.
[2]	Total loans of MUAH do not include ¥2,039 million and ¥1,600 million of FDIC covered loans at March 31, 2013 and 2014, respectively, which are not subject to the guidance on loans and debt securities acquired with deteriorated credit quality.

Recovered_Sheet2

Loans And Allowance For Credit Losses (Changes In Allowance For Credit Losses By Portfolio Segment) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Allowance for credit losses, at beginning of fiscal year	¥ 1,335,987		¥ 1,285,507		¥ 1,240,456
Provision (credit) for credit losses	-106,371		144,542		223,809
Charge-offs	191,098		144,537		216,799
Recoveries	37,350		31,675		43,429
Net charge-offs	153,748		112,862		173,370
Others	18,552	[1]	18,800	[1]	-5,388	[1]
Allowance for credit losses, at end of fiscal year	1,094,420		1,335,987		1,285,507
Commercial [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Allowance for credit losses, at beginning of fiscal year	1,068,463		984,308		895,611
Provision (credit) for credit losses	-70,091		127,874		181,449
Charge-offs	158,875		80,534		126,157
Recoveries	29,478		23,410		36,043
Net charge-offs	129,397		57,124		90,114
Others	7,882	[1]	13,405	[1]	-2,638	[1]
Allowance for credit losses, at end of fiscal year	876,857		1,068,463		984,308
Residential [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Allowance for credit losses, at beginning of fiscal year	157,209		171,837		165,215
Provision (credit) for credit losses	-35,952		1,302		29,481
Charge-offs	4,577		16,283		23,075
Recoveries	230		353		216
Net charge-offs	4,347		15,930		22,859
Others	3	[1]	'		'
Allowance for credit losses, at end of fiscal year	116,913		157,209		171,837
Card [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Allowance for credit losses, at beginning of fiscal year	51,870		68,903		82,607
Provision (credit) for credit losses	5,617		12,379		27,883
Charge-offs	20,125		32,135		43,073
Recoveries	3,264		2,723		1,486
Net charge-offs	16,861		29,412		41,587
Allowance for credit losses, at end of fiscal year	40,626		51,870		68,903
MUAH [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Allowance for credit losses, at beginning of fiscal year	58,445		60,459		97,023
Provision (credit) for credit losses	-5,945		2,987		-15,004
Charge-offs	7,521		15,585		24,494
Recoveries	4,378		5,189		5,684
Net charge-offs	3,143		10,396		18,810
Others	10,667	[1]	5,395	[1]	-2,750	[1]
Allowance for credit losses, at end of fiscal year	60,024		58,445		60,459
Krungsri [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Allowance for credit losses, at beginning of fiscal year	'	[2]	'		'
Provision (credit) for credit losses	'	[2]	'		'
Charge-offs	'	[2]	'		'
Recoveries	'	[2]	'		'
Net charge-offs	'	[2]	'		'
Others	'	[1],[2]	'		'
Allowance for credit losses, at end of fiscal year	'	[2],[3]	'		'
[1]	Others are principally comprised of gains or losses from foreign exchange translation.
[2]	For the Krungsri segment, the acquired loans were recorded at their fair values as of the acquisition date, and there have been no indications that allowance for credit loss is necessary for these loans since then. Therefore, no allowance for credit loss was stated in the above table.
[3]	For the Krungsri segment, acquired loans were recorded at their fair values as of the acquisition date, and there have been no indications that allowance for credit loss is necessary for these loans since then. Therefore, no allowance for credit loss was stated in the above table.

Recovered_Sheet3

Loans And Allowance For Credit Losses (Allowance For Credit Losses And Recorded Investment In Loans By Portfolio Segment) (Detail) (JPY ¥)	Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2012	Mar. 31, 2011
In Millions, unless otherwise specified
Allowance for credit losses, Details :	'		'		'	'
Individually evaluated for impairment	¥ 743,430		¥ 943,934		'	'
Collectively evaluated for impairment	321,561		354,672		'	'
Loans acquired with deteriorated credit quality	29,429		37,381		'	'
Allowance for credit losses, Total	1,094,420		1,335,987		1,285,507	1,240,456
Loans, Details :	'		'		'	'
Individually evaluated for impairment	1,838,009		2,164,330		'	'
Collectively evaluated for impairment	108,382,481		96,280,782		'	'
Loans acquired with deteriorated credit quality	269,376		232,334		'	'
Loans, Total	110,489,866	[1]	98,677,446	[1]	'	'
Commercial [Member]	'		'		'	'
Allowance for credit losses, Details :	'		'		'	'
Individually evaluated for impairment	640,442		784,718		'	'
Collectively evaluated for impairment	209,117		248,798		'	'
Loans acquired with deteriorated credit quality	27,298		34,947		'	'
Allowance for credit losses, Total	876,857		1,068,463		984,308	895,611
Loans, Details :	'		'		'	'
Individually evaluated for impairment	1,459,268		1,677,144		'	'
Collectively evaluated for impairment	83,052,520		75,771,905		'	'
Loans acquired with deteriorated credit quality	75,740		101,313		'	'
Loans, Total	84,587,528	[1]	77,550,362	[1]	'	'
Residential [Member]	'		'		'	'
Allowance for credit losses, Details :	'		'		'	'
Individually evaluated for impairment	69,613		117,670		'	'
Collectively evaluated for impairment	45,355		37,360		'	'
Loans acquired with deteriorated credit quality	1,945		2,179		'	'
Allowance for credit losses, Total	116,913		157,209		171,837	165,215
Loans, Details :	'		'		'	'
Individually evaluated for impairment	211,802		309,408		'	'
Collectively evaluated for impairment	14,751,204		14,874,595		'	'
Loans acquired with deteriorated credit quality	15,299		17,230		'	'
Loans, Total	14,978,305	[1]	15,201,233	[1]	'	'
Card [Member]	'		'		'	'
Allowance for credit losses, Details :	'		'		'	'
Individually evaluated for impairment	29,244		37,901		'	'
Collectively evaluated for impairment	11,312		13,809		'	'
Loans acquired with deteriorated credit quality	70		160		'	'
Allowance for credit losses, Total	40,626		51,870		68,903	82,607
Loans, Details :	'		'		'	'
Individually evaluated for impairment	102,930		123,519		'	'
Collectively evaluated for impairment	492,990		534,853		'	'
Loans acquired with deteriorated credit quality	12,701		13,233		'	'
Loans, Total	608,621	[1]	671,605	[1]	'	'
MUAH [Member]	'		'		'	'
Allowance for credit losses, Details :	'		'		'	'
Individually evaluated for impairment	4,131		3,645		'	'
Collectively evaluated for impairment	55,777		54,705		'	'
Loans acquired with deteriorated credit quality	116		95		'	'
Allowance for credit losses, Total	60,024		58,445		60,459	97,023
Loans, Details :	'		'		'	'
Individually evaluated for impairment	64,009		54,259		'	'
Collectively evaluated for impairment	7,060,581		5,099,429		'	'
Loans acquired with deteriorated credit quality	114,961		100,558		'	'
Loans, Total	7,239,551	[1]	5,254,246	[1]	'	'
Krungsri [Member]	'		'		'	'
Allowance for credit losses, Details :	'		'		'	'
Individually evaluated for impairment	'	[2]	'		'	'
Collectively evaluated for impairment	'	[2]	'		'	'
Loans acquired with deteriorated credit quality	'	[2]	'		'	'
Allowance for credit losses, Total	'	[2],[3]	'	[3]	'	'
Loans, Details :	'		'		'	'
Individually evaluated for impairment	'	[2]	'		'	'
Collectively evaluated for impairment	3,025,186	[2]	'		'	'
Loans acquired with deteriorated credit quality	50,675	[2]	'		'	'
Loans, Total	¥ 3,075,861	[1],[2]	'		'	'
[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.
[2]	For the Krungsri segment, acquired loans were recorded at their fair values as of the acquisition date, and there have been no indications that allowance for credit loss is necessary for these loans since then. Therefore, no allowance for credit loss was stated in the above table.
[3]	For the Krungsri segment, the acquired loans were recorded at their fair values as of the acquisition date, and there have been no indications that allowance for credit loss is necessary for these loans since then. Therefore, no allowance for credit loss was stated in the above table.

Recovered_Sheet4

Loans And Allowance For Credit Losses (Loans Acquired With Deteriorated Credit Quality) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Loans acquired during the fiscal year:	'	'
Contractually required payments receivable at acquisitions	¥ 186,268	¥ 117,468
Cash flows expected to be collected at acquisitions	116,218	77,417
Fair value of loans at acquisition	93,845	63,731
Accretable yield for loans within the scope of the guidance on loans and debt securities acquired with deteriorated credit quality:	'	'
Balance at beginning of fiscal year	95,178	86,877
Additions	22,373	13,686
Accretion	-49,155	-39,981
Disposals	'	'
Reclassifications from nonaccretable difference	15,760	29,721
Foreign currency translation adjustments	9,465	4,875
Balance at end of fiscal year	93,621	95,178
Loans within the scope of the guidance on loans and debt securities acquired with deteriorated credit quality:	'	'
Outstanding balance at beginning of fiscal year	497,265	493,111
Outstanding balance at end of fiscal year	531,327	497,265
Carrying amount at beginning of fiscal year	232,334	212,702
Carrying amount at end of fiscal year	269,376	232,334
Nonaccruing loans within the scope of the guidance on loans and debt securities acquired with deteriorated credit quality:	'	'
Carrying amount at acquisition date during fiscal year	25,952	826
Carrying amount at end of fiscal year	38,651	21,965
Allowance for credit losses within the scope of the guidance on loans and debt securities acquired with deteriorated credit quality:	'	'
Balance of allowance for credit losses at beginning of fiscal year	37,381	36,391
Additional provisions during fiscal year	4,982	5,784
Reductions of allowance during fiscal year	1,129	2,066
Balance of allowance for credit losses at end of fiscal year	¥ 29,429	¥ 37,381

Recovered_Sheet5

Loans And Allowance For Credit Losses (Components Of Investment In Direct Financing Leases) (Detail) (JPY ¥)	Mar. 31, 2014	Mar. 31, 2013
In Millions, unless otherwise specified
Financing leases, net investment in direct financing leases:	'	'
Minimum lease payments receivable	¥ 1,498,755	¥ 677,959
Estimated residual values of leased property	18,261	22,384
Less-unearned income	-202,755	-69,196
Net investment in direct financing leases	¥ 1,314,261	¥ 631,147

Recovered_Sheet6

Loans And Allowance For Credit Losses (Future Minimum Lease Payment Receivables Under Noncancelable Leasing Agreements) (Detail) (JPY ¥)	Mar. 31, 2014
In Millions, unless otherwise specified
Future minimum lease payment receivables under noncancelable lease:	'
Fiscal year ending March 31, 2015	¥ 440,086
Fiscal year ending March 31, 2016	337,044
Fiscal year ending March 31, 2017	267,306
Fiscal year ending March 31, 2018	191,112
Fiscal year ending March 31, 2019	106,385
Fiscal year ending March 31, 2020 and thereafter	156,822
Total minimum lease payment receivables	¥ 1,498,755

Premises_And_Equipment_Narrati

Premises And Equipment (Narrative) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Property, Plant and Equipment [Line Items]	'	'	'
Capitalized leases, principally related to data processing equipment	¥ 41,907	¥ 43,222	'
Accumulated depreciation on capitalized leases	29,769	29,385	'
Long-term debt	14,498,678	12,182,358	'
Impairment loss of long-lived assets	13,850	3,975	10,913
Impairment loss recognized for real estate held for sale	226	1,932	5,209
BTMU [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Long-term debt	9,747,681	8,628,064	'
BTMU [Member] | Obligations Under Sale-And-Leaseback Transactions [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Long-term debt	46,339	47,435	'
BTMU [Member] | Buildings and Land [Member] | Obligations Under Sale-And-Leaseback Transactions [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Long-term debt	¥ 46,339	¥ 47,435	'

Premises_And_Equipment_Compone

Premises And Equipment (Components Of Premises And Equipment) (Detail) (JPY ¥)	Mar. 31, 2014	Mar. 31, 2013
In Millions, unless otherwise specified
Property, Plant and Equipment [Line Items]	'	'
Premises and equipment	¥ 2,360,602	¥ 2,125,907
Less accumulated depreciation	1,123,954	1,066,853
Premises and equipment-net	1,236,648	1,059,054
Land [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Premises and equipment	403,184	379,943
Buildings [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Premises and equipment	747,998	723,902
Equipment And Furniture [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Premises and equipment	929,939	767,733
Leasehold Improvements [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Premises and equipment	251,875	236,353
Construction in Progress [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Premises and equipment	¥ 27,606	¥ 17,976

Goodwill_And_Other_Intangible_2

Goodwill And Other Intangible Assets (Narrative) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Intangible Assets [Line Items]	'	'	'
Impairment of goodwill	¥ 7,792	'	'
Intangible assets subject to amortization acquired during the period	455,843	171,650	'
Weighted average amortization periods of intangible assets subject to amortization, years	'	'5 years	'
Intangible assets not subject to amortization acquired	289	50	'
Impairment losses for intangible assets, whose carrying amounts exceeded their fair value	312	3,378	30,986
Integrated Retail Banking Business Group [Member] | Contractual Rights [Member]	'	'	'
Intangible Assets [Line Items]	'	'	'
Impairment losses for intangible assets, whose carrying amounts exceeded their fair value	'	'	8,334
Integrated Trust Assets Business Group [Member]	'	'	'
Intangible Assets [Line Items]	'	'	'
Impairment of goodwill	7,792	'	'
Software [Member]	'	'	'
Intangible Assets [Line Items]	'	'	'
Intangible assets subject to amortization acquired during the period	225,108	163,748	'
Weighted average amortization periods of intangible assets subject to amortization, years	'5 years	'	'
Core Deposit Intangibles [Member]	'	'	'
Intangible Assets [Line Items]	'	'	'
Intangible assets subject to amortization acquired during the period	61,629	'	'
Weighted average amortization periods of intangible assets subject to amortization, years	'11 years	'	'
Customer Relationships [Member]	'	'	'
Intangible Assets [Line Items]	'	'	'
Intangible assets subject to amortization acquired during the period	145,936	'	'
Weighted average amortization periods of intangible assets subject to amortization, years	'13 years	'	'
Customer Relationships [Member] | Integrated Trust Assets Business Group [Member]	'	'	'
Intangible Assets [Line Items]	'	'	'
Impairment losses for intangible assets, whose carrying amounts exceeded their fair value	'	'	18,554
Trade Names [Member]	'	'	'
Intangible Assets [Line Items]	'	'	'
Intangible assets subject to amortization acquired during the period	¥ 18,083	'	'
Weighted average amortization periods of intangible assets subject to amortization, years	'22 years	'	'

Goodwill_And_Other_Intangible_3

Goodwill And Other Intangible Assets (Carrying Amount Of Goodwill By Business Segment) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2012
Goodwill [Line Items]	'		'		'
Goodwill	¥ 2,476,863		¥ 2,158,512		¥ 2,094,839
Accumulated impairment losses	-1,748,348		-1,740,556		-1,740,556
Goodwill, Net	728,515		417,956		354,283
Goodwill acquired during the fiscal year	258,010	[1]	39,683	[1]	'
Impairment loss	-7,792		'		'
Foreign currency translation adjustments and other	60,341		23,990		'
Integrated Trust Assets Business Group [Member]	'		'		'
Goodwill [Line Items]	'		'		'
Impairment loss	-7,792		'		'
Business Segment [Member] | Integrated Retail Banking Business Group [Member]	'		'		'
Goodwill [Line Items]	'		'		'
Goodwill	840,055		840,055		840,055
Accumulated impairment losses	-840,055		-840,055		-840,055
Business Segment [Member] | Integrated Corporate Banking Business Group [Member]	'		'		'
Goodwill [Line Items]	'		'		'
Goodwill	885,234		885,234		885,234
Accumulated impairment losses	-885,234		-885,234		-885,234
Business Segment [Member] | Integrated Trust Assets Business Group [Member]	'		'		'
Goodwill [Line Items]	'		'		'
Goodwill	37,795		22,527		22,527
Accumulated impairment losses	-22,527		-14,735		-14,735
Goodwill, Net	15,268		7,792		7,792
Goodwill acquired during the fiscal year	14,443	[1]	'		'
Impairment loss	-7,792		'		'
Foreign currency translation adjustments and other	825		'		'
Business Segment [Member] | Integrated Global Business Group [Member]	'		'		'
Goodwill [Line Items]	'		'		'
Goodwill	494,093		408,396		344,723
Accumulated impairment losses	-532		-532		-532
Goodwill, Net	493,561		407,864		344,191
Goodwill acquired during the fiscal year	26,181	[1]	39,683	[1]	'
Foreign currency translation adjustments and other	59,516		23,990		'
Business Segment [Member] | Integrated Global Business Group [Member] | Other Than MUAH [Member]	'		'		'
Goodwill [Line Items]	'		'		'
Goodwill	152,203		152,203		152,203
Accumulated impairment losses	-532		-532		-532
Goodwill, Net	151,671		151,671		151,671
Business Segment [Member] | Integrated Global Business Group [Member] | MUAH [Member]	'		'		'
Goodwill [Line Items]	'		'		'
Goodwill	341,890		256,193		192,520
Goodwill, Net	341,890		256,193		192,520
Goodwill acquired during the fiscal year	26,181	[1]	39,683	[1]	'
Foreign currency translation adjustments and other	59,516		23,990		'
Business Segment [Member] | Krungsri [Member]	'		'		'
Goodwill [Line Items]	'		'		'
Goodwill	217,386		'		'
Goodwill, Net	217,386		'		'
Goodwill acquired during the fiscal year	217,386	[1]	'		'
Business Segment [Member] | Global Markets [Member]	'		'		'
Goodwill [Line Items]	'		'		'
Goodwill	2,300		2,300		2,300
Goodwill, Net	¥ 2,300		¥ 2,300		¥ 2,300
[1]	See Note 2 for the goodwill acquired in connection with principal acquisitions.

Goodwill_And_Other_Intangible_4

Goodwill And Other Intangible Assets (Carrying Amount Of Other Intangible Assets By Major Class) (Detail) (JPY ¥)	Mar. 31, 2014	Mar. 31, 2013
In Millions, unless otherwise specified
Intangible assets subject to amortization:	'	'
Gross carrying amount	¥ 3,032,775	¥ 2,569,981
Accumulated amortization	1,910,207	1,715,899
Net carrying amount	1,122,568	854,082
Intangible assets not subject to amortization:	'	'
Net carrying amount	10,786	12,071
Total intangible assets, Net	1,133,354	866,153
Indefinite-Lived Trade Names [Member]	'	'
Intangible assets not subject to amortization:	'	'
Net carrying amount	3,037	3,037
Other [Member]	'	'
Intangible assets not subject to amortization:	'	'
Net carrying amount	7,749	9,034
Software [Member]	'	'
Intangible assets subject to amortization:	'	'
Gross carrying amount	1,858,371	1,640,297
Accumulated amortization	1,245,657	1,105,783
Net carrying amount	612,714	534,514
Core Deposit Intangibles [Member]	'	'
Intangible assets subject to amortization:	'	'
Gross carrying amount	712,188	638,863
Accumulated amortization	497,219	456,339
Net carrying amount	214,969	182,524
Customer Relationships [Member]	'	'
Intangible assets subject to amortization:	'	'
Gross carrying amount	380,674	233,360
Accumulated amortization	147,774	136,603
Net carrying amount	232,900	96,757
Trade Names [Member]	'	'
Intangible assets subject to amortization:	'	'
Gross carrying amount	72,788	52,562
Accumulated amortization	16,995	14,430
Net carrying amount	55,793	38,132
Other [Member]	'	'
Intangible assets subject to amortization:	'	'
Gross carrying amount	8,754	4,899
Accumulated amortization	2,562	2,744
Net carrying amount	¥ 6,192	¥ 2,155

Goodwill_And_Other_Intangible_5

Goodwill And Other Intangible Assets (Estimated Aggregate Amortization Expense For Intangible Assets For Next Five Fiscal Years) (Detail) (JPY ¥)	Mar. 31, 2014
In Millions, unless otherwise specified
Intangible Assets [Line Items]	'
Fiscal year ending March 31, 2015	¥ 231,427
Fiscal year ending March 31, 2016	198,788
Fiscal year ending March 31, 2017	170,098
Fiscal year ending March 31, 2018	135,245
Fiscal year ending March 31, 2019	¥ 95,218

Income_Taxes_Narrative_Detail

Income Taxes (Narrative) (Detail) (JPY ¥)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Income Taxes [Line Items]	'	'	'
Combined normal effective statutory tax rate	38.00%	38.00%	40.60%
Undistributed earning of foreign subsidiaries	¥ 37,498,000,000	¥ 28,644,000,000	'
Operating loss carryforwards	302,033,000,000	'	'
Tax credit carryforwards	6,442,000,000	'	'
Total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate	3,570,000,000	9,632,000,000	9,170,000,000
Reasonably possible decrease in unrecognized tax benefits	3,000,000,000	'	'
"Amendment to the 2011 Tax Reform" and "Special Measures to Secure the Financial Resources to Implement the Restoration from The Great East Japan Earthquake", enacted on Nov. 30, 2011 [Member]	'	'	'
Income Taxes [Line Items]	'	'	'
Percentage of annual taxable income up to which net operating loss carryforward can be utilized	'	'	80.00%
Increase in the net operating loss carryforward period in years	'	'	'2 years
Net operating loss carryforward period in years	'	'	'9 years
Reduction in the effective statutory rate of corporate income tax	'	'	5.00%
Effective statutory rate of corporate income tax for years beginning on or after April 1, 2015	'	'	35.60%
Effective statutory rate of corporate income tax for the three year period between April 1, 2012 and March 31, 2015	38.00%	38.00%	'
Duration for which effective statutory tax rate of 38% is applied, in years	'	'	'3 years
Decrease in the effective period by the new law in year	'1 year	'	'
Change in income tax expense resulting from change in tax laws	'	'	77,997,000,000
"2014 Tax Reform", enacted on Mar. 20, 2014 [Member]	'	'	'
Income Taxes [Line Items]	'	'	'
Change in income tax expense resulting from change in tax laws	16,687,000,000	'	'
Effective statutory rate of corporate income tax for years beginning on or after April 1, 2014	35.60%	'	'
Release Of Valuation Allowance Due To The Application Of The Consolidated Corporate Tax System Beginning With The Fiscal Year Ending March 31, 2015 [Member]	'	'	'
Income Taxes [Line Items]	'	'	'
Release of valuation allowance	91,070,000,000	'	'
Release Of Valuation Allowance Due To The Profitability Improvement Of A Certain Subsidiary [Member]	'	'	'
Income Taxes [Line Items]	'	'	'
Release of valuation allowance	¥ 45,922,000,000	'	'

Income_Taxes_Income_Loss_Befor

Income Taxes (Income (Loss) Before Income Tax Expense (Benefit) By Jurisdiction) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Income Taxes [Line Items]	'	'	'
Income (loss) before income tax expense (benefit)	¥ 1,420,443	¥ 1,415,871	¥ 849,942
Domestic Income [Member]	'	'	'
Income Taxes [Line Items]	'	'	'
Income (loss) before income tax expense (benefit)	1,012,551	898,596	1,037,891
Foreign Income (Loss) [Member]	'	'	'
Income Taxes [Line Items]	'	'	'
Income (loss) before income tax expense (benefit)	¥ 407,892	¥ 517,275	¥ (187,949)	[1]
[1]	An other-than-temporary impairment loss of Morgan Stanley's common stock was included in Foreign income (loss). See Note 2 for further details of an other-than-temporary impairment loss of Morgan Stanley's common stock.

Income_Taxes_Details_Of_Curren

Income Taxes (Details Of Current And Deferred Income Tax Expense (Benefit)) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Current:	'	'	'
Domestic	¥ 243,648	¥ 102,357	¥ 156,764
Foreign	102,316	60,609	79,313
Total	345,964	162,966	236,077
Deferred:	'	'	'
Domestic	-5,523	122,804	171,889
Foreign	-2,524	10,250	21,225
Total	-8,047	133,054	193,114
Income tax expense (benefit)	337,917	296,020	429,191
Income tax expense (benefit) reported in Accumulated OCI relating to:	'	'	'
Investment securities	96,422	336,531	116,997
Derivatives qualifying for cash flow hedges	-235	2,217	235
Defined benefit plans	69,515	43,213	-66,573
Foreign currency translation adjustments	51,414	18,537	13,230
Total	217,116	400,498	63,889
Total, Income tax expense (benefit)	¥ 555,033	¥ 696,518	¥ 493,080

Income_Taxes_Reconciliation_Of

Income Taxes (Reconciliation Of Effective Income Tax Rate) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013		Mar. 31, 2012
Reconciliation of effective income tax rate:	'	'		'
Combined normal effective statutory tax rate	38.00%	38.00%		40.60%
Nondeductible expenses	0.20%	0.10%		0.20%
Dividends from foreign subsidiaries	0.00%	0.00%		0.10%
Foreign tax credit and payments	-0.60%	-0.80%		-2.10%
Lower tax rates applicable to income of subsidiaries	-0.40%	-0.50%		-0.50%
Change in valuation allowance	-12.40%	-7.30%		2.30%
Realization of previously unrecognized tax effects of subsidiaries	-0.10%	-10.70%	[1]	0.00%
Nontaxable dividends received	-3.30%	-2.30%		-3.40%
Undistributed earnings of subsidiaries	0.50%	1.50%		0.20%
Tax and interest expense for uncertainty in income taxes	'	-0.10%		0.10%
Expiration of loss carryforward	'	2.10%		4.80%
Effect of changes in tax laws	1.20%	'		9.10%
Other-net	0.70%	0.90%		-0.90%
Effective income tax rate	23.80%	20.90%		50.50%
BTMU [Member]	'	'		'
Reconciliation of effective income tax rate:	'	'		'
Reduction of income tax expense due to realization of tax benefits from liquidation of the wholly owned subsidiaries of the company	'	151,309		'
Reduction in effective income tax rate due to realization of tax benefits from liquidation of the wholly owned subsidiaries of the company	'	10.70%		'
[1]	In April 2012, one of the wholly-owned subsidiaries of BTMU was liquidated. The liquidation resulted in the realization of tax benefits that were not previously recognized as deferred tax assets, resulting in a ¥151,309 million reduction of income tax expense and a 10.7% reduction in the effective tax rate for the fiscal year ended March 31, 2013.

Income_Taxes_Components_Of_Net

Income Taxes (Components Of Net Deferred Tax Assets) (Detail) (JPY ¥)	Mar. 31, 2014	Mar. 31, 2013
In Millions, unless otherwise specified
Deferred tax assets:	'	'
Allowance for credit losses	¥ 650,069	¥ 774,612
Operating loss carryforwards	102,260	106,856
Loans	7,632	14,360
Accrued liabilities and other	309,327	355,337
Premises and equipment, including sale-and-leaseback transactions	94,652	102,217
Derivative financial instruments	94,514	64,583
Accrued severance indemnities and pension plans	44,810	164,797
Valuation allowance	-308,561	-483,006
Total deferred tax assets	994,703	1,099,756
Deferred tax liabilities:	'	'
Investment securities (including trading account assets at fair value under fair value option)	574,807	488,728
Intangible assets	159,330	104,736
Lease transactions	77,542	54,025
Other	74,471	64,806
Total deferred tax liabilities	886,150	712,295
Net deferred tax assets	¥ 108,553	¥ 387,461

Income_Taxes_Operating_Loss_Ca

Income Taxes (Operating Loss Carryforwards And Tax Credit Carryforwards) (Detail) (JPY ¥)	Mar. 31, 2014
In Millions, unless otherwise specified
Operating Loss And Tax Credit Carryforwards [Line Items]	'
Operating loss carryforwards	¥ 302,033
Tax credit carryforwards	6,442
Fiscal Year Ending March 31, 2015 [Member]	'
Operating Loss And Tax Credit Carryforwards [Line Items]	'
Operating loss carryforwards	1,808
Tax credit carryforwards	579
Fiscal Year Ending March 31, 2016 [Member]	'
Operating Loss And Tax Credit Carryforwards [Line Items]	'
Tax credit carryforwards	47
Fiscal Year Ending March 31, 2017 [Member]	'
Operating Loss And Tax Credit Carryforwards [Line Items]	'
Tax credit carryforwards	27
Fiscal Year Ending March 31, 2018 [Member]	'
Operating Loss And Tax Credit Carryforwards [Line Items]	'
Operating loss carryforwards	31,619
Tax credit carryforwards	52
Fiscal Year Ending March 31, 2019 [Member]	'
Operating Loss And Tax Credit Carryforwards [Line Items]	'
Operating loss carryforwards	6,412
Tax credit carryforwards	56
Fiscal Year Ending March 31, 2020 [Member]	'
Operating Loss And Tax Credit Carryforwards [Line Items]	'
Operating loss carryforwards	34,370
Tax credit carryforwards	96
Fiscal Year Ending March 31, 2021 And Thereafter [Member]	'
Operating Loss And Tax Credit Carryforwards [Line Items]	'
Operating loss carryforwards	216,288
Tax credit carryforwards	3,900
No Definite Expiration Date [Member]	'
Operating Loss And Tax Credit Carryforwards [Line Items]	'
Operating loss carryforwards	11,536
Tax credit carryforwards	¥ 1,685

Income_Taxes_RollForward_Of_Un

Income Taxes (Roll-Forward Of Unrecognized Tax Benefits) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2012
Roll-forward of unrecognized tax benefits:	'		'		'
Balance at beginning of fiscal year	¥ 30,956		¥ 58,588		¥ 61,297
Gross amount of increases for current year's tax positions	439		366		455
Gross amount of decreases for current year's tax positions	'		-49		-339
Gross amount of increases for prior years' tax positions	333		2,765		2,887
Gross amount of decreases for prior years' tax positions	-25,318	[1]	-35,119	[2]	-312
Net amount of changes relating to settlements with tax authorities	-244		760		-2,515
Decreases due to lapse of applicable statutes of limitations	'		'		-1,123
Foreign exchange translation and others	7,827		3,645		-1,762
Balance at end of fiscal year	¥ 13,993		¥ 30,956		¥ 58,588
[1]	The decrease related to prior year tax positions is primarily from the resolution of uncertain tax positions in the U.S. for both federal income taxes and California state tax.
[2]	The decrease was primarily because, during the fiscal year ended March 31, 2013, the MUFG Group closed an examination with U.S. tax authorities on issues related to prior years' tax positions.

Income_Taxes_RollForward_Of_In

Income Taxes (Roll-Forward Of Interest And Penalties Recognized) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Income Tax Contingency [Line Items]	'	'	'
Balance at beginning of fiscal year	¥ 4,528	¥ 6,934	¥ 7,033
Total interest and penalties in the consolidated statements of income	-698	-2,975	27
Total cash settlements, foreign exchange translation and others	2,116	569	-126
Balance at end of fiscal year	¥ 5,946	¥ 4,528	¥ 6,934

Income_Taxes_Status_Of_Years_U

Income Taxes (Status Of Years Under Audit Or Open To Examination By Major Tax Jurisdiction) (Detail)	12 Months Ended
	Mar. 31, 2014
Japan [Member]	'
Income Tax Contingency [Line Items]	'
Status of tax years under audit or open to examination	'2013 and forward
United States - Federal [Member]	'
Income Tax Contingency [Line Items]	'
Status of tax years under audit or open to examination	'2007 and forward
United States - California [Member]	'
Income Tax Contingency [Line Items]	'
Status of tax years under audit or open to examination	'2009 and forward
Thailand [Member]	'
Income Tax Contingency [Line Items]	'
Status of tax years under audit or open to examination	'2009 and forward

Pledged_Assets_And_Collateral_2

Pledged Assets And Collateral (Narrative) (Detail) (JPY ¥)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Financial Instruments Owned and Pledged as Collateral [Line Items]	'	'
Investment securities pledged as collateral for acting as a collection agent for public funds	¥ 20,812,386,000,000	'
Reserve funds included in Cash and due from banks and Interest-earning deposits in other banks	13,007,902,000,000	5,697,318,000,000
Average reserves included in Cash and due from banks and Interest-earning deposits in other banks	12,313,722,000,000	4,566,092,000,000
Pledged assets that may not be sold or repledged by secured parties	29,528,000,000,000	'
Fair value of securities received as collateral that can be resold or repledged	18,637,000,000,000	11,873,000,000,000
Fair value of securities received as collateral that have been resold or repledged	14,011,000,000,000	8,190,000,000,000
Cash collateral paid for derivative transactions included in other assets	1,045,851,000,000	1,573,698,000,000
Cash collateral received for derivative transactions included in other liabilities	¥ 454,506,000,000	¥ 366,544,000,000

Pledged_Assets_And_Collateral_3

Pledged Assets And Collateral (Assets Mortgaged Pledged Or Otherwise Subject To Lien) (Detail) (JPY ¥)	Mar. 31, 2014
In Millions, unless otherwise specified
Financial Instruments Owned and Pledged as Collateral [Line Items]	'
Pledged assets	¥ 26,555,232
Trading Account Securities [Member]	'
Financial Instruments Owned and Pledged as Collateral [Line Items]	'
Pledged assets	13,654,793
Investment Securities [Member]	'
Financial Instruments Owned and Pledged as Collateral [Line Items]	'
Pledged assets	4,728,870
Loans [Member]	'
Financial Instruments Owned and Pledged as Collateral [Line Items]	'
Pledged assets	8,087,278
Other [Member]	'
Financial Instruments Owned and Pledged as Collateral [Line Items]	'
Pledged assets	¥ 84,291

Pledged_Assets_And_Collateral_4

Pledged Assets And Collateral (Pledged Assets Classified By Type Of Liabilities) (Detail) (JPY ¥)	Mar. 31, 2014
In Millions, unless otherwise specified
Financial Instruments Owned and Pledged as Collateral [Line Items]	'
Pledged assets	¥ 26,555,232
Deposits [Member]	'
Financial Instruments Owned and Pledged as Collateral [Line Items]	'
Pledged assets	552,503
Call Money And Funds Purchased [Member]	'
Financial Instruments Owned and Pledged as Collateral [Line Items]	'
Pledged assets	708,086
Payables Under Repurchase Agreements and Securities Lending Transactions [Member]	'
Financial Instruments Owned and Pledged as Collateral [Line Items]	'
Pledged assets	15,436,764
Other Short-term Borrowings and Long-term Debt [Member]	'
Financial Instruments Owned and Pledged as Collateral [Line Items]	'
Pledged assets	9,657,563
Other [Member]	'
Financial Instruments Owned and Pledged as Collateral [Line Items]	'
Pledged assets	¥ 200,316

Deposits_Narrative_Detail

Deposits (Narrative) (Detail)	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2014
	JPY (¥)	JPY (¥)	Minimum [Member]	Minimum [Member]
			USD ($)	JPY (¥)
Deposits [Line Items]	'	'	'	'
Issue amount of domestic time deposits in Japanese Yen	'	'	'	¥ 10,000,000
U.S.$ equivalent of JPY10 million based on Federal Reserve Bank of New York's noon buying rate	'	'	97,000	'
Issue amount of foreign time deposits in U.S. dollars	'	'	100,000	'
Time deposits, including certificates of deposits ("CDs"), issued in amount of JPY10 million or more, Domestic deposits	27,555,387,000,000	28,267,100,000,000	'	'
Time deposits, including certificates of deposits ("CDs"), issued in amount of U.S.$100,000 or more, Foreign deposits	¥ 26,026,728,000,000	¥ 19,783,917,000,000	'	'

Deposits_Time_Deposits_By_Matu

Deposits (Time Deposits By Maturity) (Detail) (JPY ¥)	Mar. 31, 2014
In Millions, unless otherwise specified
Domestic Offices [Member]	'
Maturities of time deposits:	'
Due in one year or less	¥ 35,654,357
Due after one year through two years	6,307,843
Due after two years through three years	2,813,975
Due after three years through four years	611,214
Due after four years through five years	807,890
Due after five years	464,856
Total	46,660,135
Foreign Offices [Member]	'
Maturities of time deposits:	'
Due in one year or less	25,819,867
Due after one year through two years	421,138
Due after two years through three years	145,802
Due after three years through four years	121,113
Due after four years through five years	130,491
Due after five years	23,225
Total	¥ 26,661,636

Call_Money_And_Funds_Purchased2

Call Money And Funds Purchased (Summary Of Funds Transactions) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Call Loans And Funds Sold And Call Money And Funds Purchased [Line Items]	'	'
Outstanding at end of fiscal year, Amount	¥ 3,417,455	¥ 4,010,582
Outstanding at end of fiscal year, Principal range of maturities	'1 day to 30 days	'1 day to 30 days
Outstanding at end of fiscal year, Weighted average interest rate	0.18%	0.18%

Due_To_Trust_Account_Summary_O

Due To Trust Account (Summary Of Due To Trust Account Transactions) (Detail) (JPY ¥)	Mar. 31, 2014	Mar. 31, 2013
In Millions, unless otherwise specified
Due To Trust Account [Line Items]	'	'
Amount outstanding at end of fiscal year	¥ 750,210	¥ 633,029
Weighted average interest rate on outstanding balance at end of fiscal year	0.08%	0.09%

ShortTerm_Borrowings_And_LongT2

Short-Term Borrowings And Long-Term Debt (Narrative) (Detail) (JPY ¥)	Mar. 31, 2014	Mar. 31, 2013
In Millions, unless otherwise specified
Line of Credit Facility [Line Items]	'	'
Unused lines of credit for short-term financing	¥ 10,750,175	¥ 11,282,220

ShortTerm_Borrowings_And_LongT3

Short-Term Borrowings And Long-Term Debt (Components Of Other Short-Term Borrowings) (Detail) (JPY ¥)	Mar. 31, 2014	Mar. 31, 2013
In Millions, unless otherwise specified
Short-term Debt [Line Items]	'	'
Other short-term borrowings	¥ 11,106,247	¥ 11,608,712
Less unamortized discount	176	114
Other short-term borrowings, net	11,106,071	11,608,598
Weighted average interest rate on outstanding balance at end of fiscal year	0.25%	0.20%
Domestic Offices [Member]	'	'
Short-term Debt [Line Items]	'	'
Other short-term borrowings	7,408,243	9,077,404
Domestic Offices [Member] | Commercial Paper [Member]	'	'
Short-term Debt [Line Items]	'	'
Other short-term borrowings	1,235,525	1,358,067
Domestic Offices [Member] | Borrowings From The Bank Of Japan [Member]	'	'
Short-term Debt [Line Items]	'	'
Other short-term borrowings	5,888,541	7,466,717
Domestic Offices [Member] | Borrowings From Other Financial Institutions [Member]	'	'
Short-term Debt [Line Items]	'	'
Other short-term borrowings	224,676	203,120
Domestic Offices [Member] | Other [Member]	'	'
Short-term Debt [Line Items]	'	'
Other short-term borrowings	59,501	49,500
Foreign Offices [Member]	'	'
Short-term Debt [Line Items]	'	'
Other short-term borrowings	3,698,004	2,531,308
Foreign Offices [Member] | Commercial Paper [Member]	'	'
Short-term Debt [Line Items]	'	'
Other short-term borrowings	3,091,977	2,125,851
Foreign Offices [Member] | Borrowings From Other Financial Institutions [Member]	'	'
Short-term Debt [Line Items]	'	'
Other short-term borrowings	333,116	386,068
Foreign Offices [Member] | Short-term Debentures [Member]	'	'
Short-term Debt [Line Items]	'	'
Other short-term borrowings	119,837	'
Foreign Offices [Member] | Other [Member]	'	'
Short-term Debt [Line Items]	'	'
Other short-term borrowings	¥ 153,074	¥ 19,389

ShortTerm_Borrowings_And_LongT4

Short-Term Borrowings And Long-Term Debt (Components Of Long-Term Debt) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Debt Instrument [Line Items]	'		'
Long-term debt	¥ 14,498,678		¥ 12,182,358
MUFG [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	384,523		384,166
MUFG [Member] | Obligations Under Capital Leases [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	78		59
MUFG [Member] | Subordinated Debt [Member] | Adjustable Rate Bonds [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	380,500	[1]	380,500	[1]
Payable, currency	'Japanese yen		'
Maturity date	'no stated maturity		'
Interest rate, stated percentage rate range, minimum	3.92%		'
Interest rate, stated percentage rate range, maximum	4.42%		'
MUFG [Member] | Subordinated Debt [Member] | Adjustable Rate Borrowings I [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	1,500	[1]	1,500	[1]
Payable, currency	'Japanese yen		'
Maturity date	'no stated maturity		'
Interest rate, stated percentage rate range, minimum	3.42%		'
Interest rate, stated percentage rate range, maximum	4.78%		'
MUFG [Member] | Subordinated Debt [Member] | Adjustable Rate Borrowings II [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	515	[1]	470	[1]
Payable, currency	'US dollars		'
Maturity date	'no stated maturity		'
Interest rate, stated percentage	6.25%		'
MUFG [Member] | Subordinated Debt [Member] | Adjustable Rate Borrowings III [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	1,416	[1]	1,207	[1]
Payable, currency	'Euro		'
Maturity date	'no stated maturity		'
Interest rate, stated percentage rate range, minimum	4.75%		'
Interest rate, stated percentage rate range, maximum	5.17%		'
MUFG [Member] | Subordinated Debt [Member] | Adjustable Rate Borrowings IV [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	514	[1],[2]	430	[1],[2]
Payable, currency	'other currencies excluding Japanese yen, US dollars, Euro		'
Maturity date	'no stated maturity		'
Interest rate, stated percentage	6.20%		'
BTMU [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	9,747,681		8,628,064
BTMU [Member] | Obligations Under Capital Leases [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	12,260		15,294
BTMU [Member] | Obligations Under Sale-And-Leaseback Transactions [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	46,339		47,435
BTMU [Member] | Unsubordinated Debt [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	4,922,910		3,046,647
BTMU [Member] | Unsubordinated Debt [Member] | Fixed Rate Bonds I [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	1,311,801	[1]	1,337,900	[1]
Payable, currency	'Japanese yen		'
Maturity date range, Start	'2014		'
Maturity date range, End	'2027		'
Interest rate, stated percentage rate range, minimum	0.16%		'
Interest rate, stated percentage rate range, maximum	2.69%		'
BTMU [Member] | Unsubordinated Debt [Member] | Fixed Rate Bonds II [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	1,109,470	[1]	639,679	[1]
Payable, currency	'US dollars		'
Maturity date range, Start	'2015		'
Maturity date range, End	'2044		'
Interest rate, stated percentage rate range, minimum	1.00%		'
Interest rate, stated percentage rate range, maximum	4.70%		'
BTMU [Member] | Unsubordinated Debt [Member] | Fixed Rate Bonds III [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	71,439	[1],[2]	126,709	[1],[2]
Payable, currency	'other currencies excluding Japanese yen, US dollars		'
Maturity date range, Start	'2014		'
Maturity date range, End	'2017		'
Interest rate, stated percentage rate range, minimum	4.05%		'
Interest rate, stated percentage rate range, maximum	4.91%		'
BTMU [Member] | Unsubordinated Debt [Member] | Fixed Rate Borrowings I [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	1,163,291	[1]	10,297	[1]
Payable, currency	'Japanese yen		'
Maturity date range, Start	'2014		'
Maturity date range, End	'2028		'
Interest rate, stated percentage rate range, minimum	0.10%		'
Interest rate, stated percentage rate range, maximum	0.50%		'
BTMU [Member] | Unsubordinated Debt [Member] | Fixed Rate Borrowings II [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	342	[1]	383	[1]
Payable, currency	'US dollars		'
Maturity date	'2018		'
Interest rate, stated percentage	7.49%		'
BTMU [Member] | Unsubordinated Debt [Member] | Fixed Rate Borrowings III [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	'		384	[1],[2]
Payable, currency	'other currencies excluding Japanese yen, US dollars		'
Maturity date range, Start	'2013		'
Maturity date range, End	'2014		'
Interest rate, stated percentage rate range, minimum	2.13%		'
Interest rate, stated percentage rate range, maximum	5.65%		'
BTMU [Member] | Unsubordinated Debt [Member] | Adjustable Rate Bonds [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	'		20,000	[1]
Payable, currency	'Japanese yen		'
Maturity date	'2014		'
Interest rate, stated percentage	1.57%		'
BTMU [Member] | Unsubordinated Debt [Member] | Floating Rate Bonds I [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	226,424	[1]	93,667	[1]
Payable, currency	'US dollars		'
Maturity date range, Start	'2016		'
Maturity date range, End	'2017		'
Interest rate, stated percentage rate range, minimum	0.65%		'
Interest rate, stated percentage rate range, maximum	0.85%		'
BTMU [Member] | Unsubordinated Debt [Member] | Floating Rate Bonds II [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	90,431	[1],[2]	29,379	[1],[2]
Payable, currency	'other currencies excluding Japanese yen, US dollars		'
Maturity date range, Start	'2015		'
Maturity date range, End	'2017		'
Interest rate, stated percentage rate range, minimum	3.77%		'
Interest rate, stated percentage rate range, maximum	4.00%		'
BTMU [Member] | Unsubordinated Debt [Member] | Floating Rate Borrowings I [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	942,215	[1]	780,410	[1]
Payable, currency	'US dollars		'
Maturity date range, Start	'2014		'
Maturity date range, End	'2024		'
Interest rate, stated percentage rate range, minimum	0.33%		'
Interest rate, stated percentage rate range, maximum	0.67%		'
BTMU [Member] | Unsubordinated Debt [Member] | Floating Rate Borrowings II [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	7,497	[1],[2]	7,839	[1],[2]
Payable, currency	'Euro		'
Maturity date range, Start	'2014		'
Maturity date range, End	'2021		'
Interest rate, stated percentage rate range, minimum	0.45%		'
Interest rate, stated percentage rate range, maximum	0.48%		'
BTMU [Member] | Subordinated Debt [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	3,259,314		3,813,695
BTMU [Member] | Subordinated Debt [Member] | Fixed Rate Bonds I [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	1,336,892	[1]	1,579,037	[1]
Payable, currency	'Japanese yen		'
Maturity date range, Start	'2014		'
Maturity date range, End	'2031		'
Interest rate, stated percentage rate range, minimum	0.93%		'
Interest rate, stated percentage rate range, maximum	2.91%		'
BTMU [Member] | Subordinated Debt [Member] | Fixed Rate Borrowings I [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	233,400	[1]	233,419	[1]
Payable, currency	'Japanese yen		'
Maturity date range, Start	'2016		'
Maturity date range, End	'2035		'
Interest rate, stated percentage rate range, minimum	0.56%		'
Interest rate, stated percentage rate range, maximum	2.24%		'
BTMU [Member] | Subordinated Debt [Member] | Fixed Rate Borrowings II [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	'		118,177	[1]
Payable, currency	'US dollars		'
Maturity date	'2013		'
Interest rate, stated percentage	6.76%		'
BTMU [Member] | Subordinated Debt [Member] | Adjustable Rate Bonds [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	31,000	[1]	93,700	[1]
Payable, currency	'Japanese yen		'
Maturity date	'2019		'
Interest rate, stated percentage	1.20%		'
BTMU [Member] | Subordinated Debt [Member] | Adjustable Rate Borrowings I [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	245,800	[1]	395,600	[1]
Payable, currency	'Japanese yen		'
Maturity date range, Start	'2017		'
Maturity date range, End	'2028		'
Interest rate, stated percentage rate range, minimum	0.25%		'
Interest rate, stated percentage rate range, maximum	2.86%		'
BTMU [Member] | Subordinated Debt [Member] | Adjustable Rate Borrowings II [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	845,400	[1]	891,199	[1]
Payable, currency	'Japanese yen		'
Maturity date	'no stated maturity		'
Interest rate, stated percentage rate range, minimum	0.97%		'
Interest rate, stated percentage rate range, maximum	4.78%		'
BTMU [Member] | Subordinated Debt [Member] | Adjustable Rate Borrowings III [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	241,862	[1]	221,018	[1]
Payable, currency	'US dollars		'
Maturity date	'no stated maturity		'
Interest rate, stated percentage	6.25%		'
BTMU [Member] | Subordinated Debt [Member] | Adjustable Rate Borrowings IV [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	186,270	[1]	158,760	[1]
Payable, currency	'Euro		'
Maturity date	'no stated maturity		'
Interest rate, stated percentage rate range, minimum	4.75%		'
Interest rate, stated percentage rate range, maximum	5.17%		'
BTMU [Member] | Subordinated Debt [Member] | Adjustable Rate Borrowings V [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	96,790	[1],[2]	80,885	[1],[2]
Payable, currency	'other currencies excluding Japanese yen, US dollars, Euro		'
Maturity date	'no stated maturity		'
Interest rate, stated percentage	6.20%		'
BTMU [Member] | Subordinated Debt [Member] | Floating Rate Borrowings I [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	41,900	[1]	41,900	[1]
Payable, currency	'Japanese yen		'
Maturity date range, Start	'2020		'
Maturity date range, End	'2027		'
Interest rate, stated percentage rate range, minimum	0.36%		'
Interest rate, stated percentage rate range, maximum	0.86%		'
BTMU [Member] | Obligations Under Loan Securitization Transaction Accounted For As Secured Borrowings [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	1,146,638		1,516,893
Maturity date range, Start	'2014		'
Maturity date range, End	'2044		'
Interest rate, stated percentage rate range, minimum	0.24%		'
Interest rate, stated percentage rate range, maximum	5.90%		'
BTMU [Member] | Payable Under Repurchase Agreements [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	360,220		188,100
Maturity date range, Start	'2016		'
Maturity date range, End	'2018		'
Interest rate, stated percentage rate range, minimum	0.63%		'
Interest rate, stated percentage rate range, maximum	1.48%		'
Other Subsidiaries [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	4,366,474		3,170,128
Other Subsidiaries [Member] | Obligations Under Capital Leases [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	7,781		10,286
Other Subsidiaries [Member] | Unsubordinated Debt [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	3,362,476		2,232,976
Other Subsidiaries [Member] | Unsubordinated Debt [Member] | Fixed Rate Borrowings, Bonds And Notes I [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	915,357	[1]	547,746	[1]
Payable, currency	'Japanese yen		'
Maturity date range, Start	'2014		'
Maturity date range, End	'2044		'
Interest rate, stated percentage rate range, minimum	0.00%		'
Interest rate, stated percentage rate range, maximum	16.00%		'
Other Subsidiaries [Member] | Unsubordinated Debt [Member] | Fixed Rate Borrowings, Bonds And Notes II [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	396,704	[1]	46,849	[1]
Payable, currency	'US dollars		'
Maturity date range, Start	'2014		'
Maturity date range, End	'2038		'
Interest rate, stated percentage rate range, minimum	0.00%		'
Interest rate, stated percentage rate range, maximum	13.10%		'
Other Subsidiaries [Member] | Unsubordinated Debt [Member] | Fixed Rate Borrowings, Bonds And Notes III [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	35,011	[1],[2]	8,952	[1],[2]
Payable, currency	'other currencies excluding Japanese yen, US dollars, Euro, Thai baht		'
Maturity date range, Start	'2014		'
Maturity date range, End	'2037		'
Interest rate, stated percentage rate range, minimum	0.50%		'
Interest rate, stated percentage rate range, maximum	10.75%		'
Other Subsidiaries [Member] | Unsubordinated Debt [Member] | Fixed Rate Bonds And Notes I [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	6,514	[1]	'
Payable, currency	'Euro		'
Maturity date	'2018		'
Interest rate, stated percentage	4.21%		'
Other Subsidiaries [Member] | Unsubordinated Debt [Member] | Fixed Rate Bonds And Notes II [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	269,219	[1]	1,437	[1]
Payable, currency	'Thai baht		'
Maturity date range, Start	'2014		'
Maturity date range, End	'2018		'
Interest rate, stated percentage rate range, minimum	0.00%		'
Interest rate, stated percentage rate range, maximum	4.80%		'
Other Subsidiaries [Member] | Unsubordinated Debt [Member] | Floating/Adjustable Rate Borrowings Bonds And Notes I [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	1,426,933	[1]	1,199,685	[1]
Payable, currency	'Japanese yen		'
Maturity date range, Start	'2014		'
Maturity date range, End	'2044		'
Interest rate, stated percentage rate range, minimum	0.00%		'
Interest rate, stated percentage rate range, maximum	24.00%		'
Other Subsidiaries [Member] | Unsubordinated Debt [Member] | Floating/Adjustable Rate Borrowings Bonds And Notes II [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	276,402	[1]	403,809	[1]
Payable, currency	'US dollars		'
Maturity date range, Start	'2014		'
Maturity date range, End	'2038		'
Interest rate, stated percentage rate range, minimum	0.00%		'
Interest rate, stated percentage rate range, maximum	7.30%		'
Other Subsidiaries [Member] | Unsubordinated Debt [Member] | Floating Rate Borrowings, Bonds And Notes I [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	2,055	[1],[2]	2,006	[1],[2]
Payable, currency	'other currencies excluding Japanese yen, US dollars, Euro		'
Maturity date range, Start	'2014		'
Maturity date range, End	'2037		'
Interest rate, stated percentage rate range, minimum	0.00%		'
Interest rate, stated percentage rate range, maximum	1.10%		'
Other Subsidiaries [Member] | Unsubordinated Debt [Member] | Floating Rate Bonds And Notes [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	34,281	[1]	22,492	[1]
Payable, currency	'Euro		'
Maturity date range, Start	'2014		'
Maturity date range, End	'2018		'
Interest rate, stated percentage rate range, minimum	0.00%		'
Interest rate, stated percentage rate range, maximum	1.76%		'
Other Subsidiaries [Member] | Subordinated Debt [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	995,771		911,075
Other Subsidiaries [Member] | Subordinated Debt [Member] | Fixed Rate Borrowings, Bonds And Notes I [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	484,194	[1]	435,544	[1]
Payable, currency	'Japanese yen		'
Maturity date range, Start	'2014		'
Maturity date range, End	'2030		'
Interest rate, stated percentage rate range, minimum	0.56%		'
Interest rate, stated percentage rate range, maximum	2.98%		'
Other Subsidiaries [Member] | Subordinated Debt [Member] | Fixed Rate Bonds And Notes I [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	77,330	[1]	105,096	[1]
Payable, currency	'US dollars		'
Maturity date range, Start	'2014		'
Maturity date range, End	'2019		'
Interest rate, stated percentage rate range, minimum	5.38%		'
Interest rate, stated percentage rate range, maximum	11.33%		'
Other Subsidiaries [Member] | Subordinated Debt [Member] | Fixed Rate Bonds And Notes II [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	111,682	[1]	'
Payable, currency	'Thai baht		'
Maturity date range, Start	'2020		'
Maturity date range, End	'2022		'
Interest rate, stated percentage rate range, minimum	4.51%		'
Interest rate, stated percentage rate range, maximum	4.70%		'
Other Subsidiaries [Member] | Subordinated Debt [Member] | Adjustable Rate Borrowings, Bonds And Notes I [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	5,000	[1]	72,300	[1]
Payable, currency	'Japanese yen		'
Maturity date	'2020		'
Interest rate, stated percentage	1.76%		'
Other Subsidiaries [Member] | Subordinated Debt [Member] | Adjustable Rate Borrowings, Bonds And Notes II [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	105,667	[1]	105,744	[1]
Payable, currency	'Japanese yen		'
Maturity date	'no stated maturity		'
Interest rate, stated percentage rate range, minimum	1.93%		'
Interest rate, stated percentage rate range, maximum	3.50%		'
Other Subsidiaries [Member] | Subordinated Debt [Member] | Floating Rate Borrowings, Bonds And Notes I [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	204,926	[1]	192,391	[1]
Payable, currency	'Japanese yen		'
Maturity date range, Start	'2014		'
Maturity date range, End	'2021		'
Interest rate, stated percentage rate range, minimum	0.57%		'
Interest rate, stated percentage rate range, maximum	1.52%		'
Other Subsidiaries [Member] | Subordinated Debt [Member] | Floating Rate Borrowings, Bonds And Notes II [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	6,972	[1]	'
Payable, currency	'US dollars		'
Maturity date range, Start	'2033		'
Maturity date range, End	'2036		'
Interest rate, stated percentage rate range, minimum	1.95%		'
Interest rate, stated percentage rate range, maximum	3.50%		'
Other Subsidiaries [Member] | Obligations Under Loan Securitization Transaction Accounted For As Secured Borrowings [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	¥ 446		¥ 15,791
Maturity date range, Start	'2014		'
Maturity date range, End	'2018		'
Interest rate, stated percentage rate range, minimum	0.95%		'
Interest rate, stated percentage rate range, maximum	2.71%		'
[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, British pound, Indonesian rupiah, Brazilian real, Russian ruble etc, have been summarized into the "Other currencies" classification.

ShortTerm_Borrowings_And_LongT5

Short-Term Borrowings And Long-Term Debt (Summary Of Subsequent Maturities Of Long-term Debt) (Detail) (JPY ¥)	Mar. 31, 2014	Mar. 31, 2013
In Millions, unless otherwise specified
Long-term debt by maturity:	'	'
2015	¥ 1,686,430	'
2016	1,578,028	'
2017	2,881,228	'
2018	1,244,725	'
2019	1,074,503	'
2020 and thereafter	6,033,764	'
Total	14,498,678	12,182,358
MUFG [Member]	'	'
Long-term debt by maturity:	'	'
2015	20	'
2016	18	'
2017	13	'
2018	6	'
2019	3	'
2020 and thereafter	384,463	'
Total	384,523	384,166
BTMU [Member]	'	'
Long-term debt by maturity:	'	'
2015	1,111,236	'
2016	931,103	'
2017	2,295,298	'
2018	891,232	'
2019	529,641	'
2020 and thereafter	3,989,171	'
Total	9,747,681	8,628,064
Other Subsidiaries [Member]	'	'
Long-term debt by maturity:	'	'
2015	575,174	'
2016	646,907	'
2017	585,917	'
2018	353,487	'
2019	544,859	'
2020 and thereafter	1,660,130	'
Total	¥ 4,366,474	¥ 3,170,128

Severance_Indemnities_And_Pens2

Severance Indemnities And Pension Plans (Narrative) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
	Age
Severance Indemnities And Pension Plans [Line Items]	'	'	'
Eligible age for lifetime annuity payments	65	'	'
Lump-sum termination benefits paid during the fiscal year	¥ 7,358	¥ 11,234	¥ 34,600
Defined contribution plan cost recognized during the fiscal year	8,443	6,396	5,775
MUTB [Member]	'	'	'
Severance Indemnities And Pension Plans [Line Items]	'	'	'
Japanese Welfare Pension Insurance Law, General Description	'In accordance with the guidance, which addresses the accounting for the transfer to the Japanese government of a substitutional portion of employee pension fund liabilities, MUTB accounted for the entire separation process, upon completion of transfer of the plan assets to the government, as a single settlement transaction.	'	'
Japanese Welfare Pension Insurance Law, Government Subsidies	115,210	'	'
Net recognized loss for the substitutional portion as settlement loss	42,435	'	'
Japanese Welfare Pension Insurance Law, Previously Accrued Salary Progression Derecognition	1,770	'	'
MUSHD [Member]	'	'	'
Severance Indemnities And Pension Plans [Line Items]	'	'	'
Lump-sum termination benefits paid during the fiscal year	'	'	¥ 20,512

Severance_Indemnities_And_Pens3

Severance Indemnities And Pension Plans (Components Of Net Periodic Costs Of Pension Benefits And Other Benefits) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Domestic Subsidiaries, Pension Benefits And SIP [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Service cost-benefits earned during the fiscal year	¥ 39,309	¥ 38,840	¥ 39,709
Interest cost on projected benefit obligation	22,464	26,648	31,509
Expected return on plan assets	-54,222	-48,106	-55,336
Amortization of net actuarial loss	23,941	42,496	29,424
Amortization of prior service cost	-11,793	-12,309	-11,534
Loss (gain) on settlements and curtailment	41,456	2,600	4,378
Net periodic benefit cost	61,155	50,169	38,150
Foreign Offices And Subsidiaries, Pension Benefits [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Service cost-benefits earned during the fiscal year	12,215	8,098	6,328
Interest cost on projected benefit obligation	13,467	10,716	10,649
Expected return on plan assets	-19,928	-14,169	-14,216
Amortization of net actuarial loss	9,808	8,030	6,221
Amortization of prior service cost	157	54	35
Loss (gain) on settlements and curtailment	'	95	40
Net periodic benefit cost	15,719	12,824	9,057
Foreign Offices And Subsidiaries, Other Benefits [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Service cost-benefits earned during the fiscal year	1,526	1,114	968
Interest cost on projected benefit obligation	1,352	1,135	1,192
Expected return on plan assets	-1,423	-1,030	-1,106
Amortization of net actuarial loss	776	715	514
Amortization of prior service cost	-69	-59	-57
Amortization of net obligation at transition	'	105	105
Loss (gain) on settlements and curtailment	'	-3	'
Net periodic benefit cost	¥ 2,162	¥ 1,977	¥ 1,616

Severance_Indemnities_And_Pens4

Severance Indemnities And Pension Plans (Summary Of Assumptions Used In Computation) (Detail)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Domestic Subsidiaries, Pension Benefits And SIP [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Weighted-average assumptions used, Discount rates in determining expense	1.25%	1.55%	1.91%
Weighted-average assumptions used, Discount rates in determining benefit obligation	1.23%	1.25%	1.55%
Weighted-average assumptions used, Rates of increase in future compensation level for determining expense	3.07%	3.31%	3.23%
Weighted-average assumptions used, Rates of increase in future compensation level for determining benefit obligation	3.36%	3.07%	3.31%
Weighted-average assumptions used, Expected rates of return on plan assets	2.83%	2.78%	3.11%
Foreign Offices And Subsidiaries, Pension Benefits [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Weighted-average assumptions used, Discount rates in determining expense	4.25%	4.73%	5.67%
Weighted-average assumptions used, Discount rates in determining benefit obligation	4.87%	4.25%	4.73%
Weighted-average assumptions used, Rates of increase in future compensation level for determining expense	4.58%	4.60%	4.67%
Weighted-average assumptions used, Rates of increase in future compensation level for determining benefit obligation	4.64%	4.58%	4.60%
Weighted-average assumptions used, Expected rates of return on plan assets	6.98%	6.92%	7.49%
Foreign Offices And Subsidiaries, Other Benefits [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Weighted-average assumptions used, Discount rates in determining expense	4.01%	4.70%	5.36%
Weighted-average assumptions used, Discount rates in determining benefit obligation	4.63%	4.01%	4.70%
Weighted-average assumptions used, Expected rates of return on plan assets	7.50%	7.50%	8.00%

Severance_Indemnities_And_Pens5

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) (Forecast [Member], JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
MUAH [Member]	'		'
Defined benefit plan, assumed health care cost trend rates for the next fiscal year:	'		'
Initial trend rate	7.71%	[1]	8.31%	[1]
Ultimate trend rate	4.50%	[1]	4.50%	[1]
Year the rate reaches the ultimate trend rate	'2021	[1]	'2021	[1]
Defined benefit plan, effect of one-percentage point change in assumed health care cost trend rates:	'		'
Effect of one percentage point increase on total of service and interest cost components	¥ 422		'
Effect of one percentage point decrease on total of service and interest cost components	-422		'
Effect of one percentage point increase on postretirement benefit obligation	3,478		'
Effect of one percentage point decrease on postretirement benefit obligation	-2,951		'
Other Than MUAH [Member]	'		'
Defined benefit plan, assumed health care cost trend rates for the next fiscal year:	'		'
Initial trend rate	8.00%	[1]	7.50%	[1]
Ultimate trend rate	5.00%	[1]	4.50%	[1]
Year the rate reaches the ultimate trend rate	'2019	[1]	'2017	[1]
Defined benefit plan, effect of one-percentage point change in assumed health care cost trend rates:	'		'
Effect of one percentage point increase on total of service and interest cost components	79		'
Effect of one percentage point decrease on total of service and interest cost components	-61		'
Effect of one percentage point increase on postretirement benefit obligation	1,128		'
Effect of one percentage point decrease on postretirement benefit obligation	¥ (885)		'
[1]	Fiscal years of MUAH and foreign subsidiaries end on December 31. Therefore, the above tables present the rates and amounts at December 31, 2012 and 2013, respectively.

Severance_Indemnities_And_Pens6

Severance Indemnities And Pension Plans (Combined Funded Status And Amounts Recognized In Balance Sheets) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2012
Amounts recognized in the consolidated balance sheets:	'		'		'
Prepaid benefit cost	¥ 412,417		¥ 117,873		'
Accrued benefit cost	-61,026		-96,844		'
Domestic Subsidiaries, Non-Contributory Pension Benefits And SIP [Member]	'		'		'
Change in benefit obligation:	'		'		'
Benefit obligation at beginning of fiscal year	1,433,161		1,383,933		'
Defined Benefit Plan, Service Cost	36,147		34,182		'
Defined Benefit Plan, Interest Cost	17,448		20,510		'
Acquisitions / Divestitures	-807		8		'
Amendments	-32		'		'
Actuarial loss (gain)	26,417		65,369		'
Benefits paid	-55,608		-55,396		'
Lump-sum payment	-14,313		-15,445		'
Translation adjustments and other	224,238	[1]	'		'
Benefit obligation at end of fiscal year	1,666,651		1,433,161		'
Change in plan assets:	'		'		'
Fair value of plan assets at beginning of fiscal year	1,462,406		1,317,074		'
Actual return (loss) on plan assets	124,355		174,467		'
Employer contributions	31,640		26,314		'
Acquisitions / Divestitures	176		-53		'
Benefits paid	-55,608		-55,396		'
Translation adjustments and other	441,360	[1]	'		'
Fair value of plan assets at end of fiscal year	2,004,329		1,462,406		'
Amounts recognized in the consolidated balance sheets:	'		'		'
Prepaid benefit cost	357,817		60,279		'
Accrued benefit cost	-20,139		-31,034		'
Net amount recognized	337,678		29,245		'
Domestic Subsidiaries, Contributory Pension Benefits [Member]	'		'		'
Change in benefit obligation:	'		'		'
Benefit obligation at beginning of fiscal year	404,427		389,264		'
Defined Benefit Plan, Service Cost	3,162		4,658		'
Defined Benefit Plan, Interest Cost	5,016		6,138		'
Actuarial loss (gain)	-8,984		15,583		'
Benefits paid	-11,202		-11,216		'
Translation adjustments and other	-392,419	[1]	'		'
Benefit obligation at end of fiscal year	'		404,427		'
Change in plan assets:	'		'		'
Fair value of plan assets at beginning of fiscal year	458,171		433,710		'
Actual return (loss) on plan assets	34,472		64,893		'
Employer contributions	12,843		15,635		'
Benefits paid	-11,202		-11,216		'
Translation adjustments and other	-494,284	[1]	-44,851	[2]	'
Fair value of plan assets at end of fiscal year	'		458,171		'
Amounts recognized in the consolidated balance sheets:	'		'		'
Prepaid benefit cost	'		53,744		'
Net amount recognized	'		53,744		'
Foreign Offices And Subsidiaries, Pension Benefits [Member]	'		'		'
Change in benefit obligation:	'		'		'
Benefit obligation at beginning of fiscal year	283,224		225,361		'
Defined Benefit Plan, Service Cost	12,215		8,098		6,328
Defined Benefit Plan, Interest Cost	13,467		10,716		10,649
Plan participants' contributions	5		14		'
Acquisitions / Divestitures	9,359		'		'
Amendments	980		302		'
Actuarial loss (gain)	-24,716		23,154		'
Benefits paid	-9,851		-13,161		'
Lump-sum payment	-158		-440		'
Translation adjustments and other	61,356		29,180		'
Benefit obligation at end of fiscal year	345,881		283,224		225,361
Change in plan assets:	'		'		'
Fair value of plan assets at beginning of fiscal year	233,081		182,791		'
Actual return (loss) on plan assets	43,561		24,787		'
Employer contributions	41,423		14,807		'
Plan participants' contributions	5		14		'
Benefits paid	-9,851		-13,161		'
Translation adjustments and other	59,876		23,843		'
Fair value of plan assets at end of fiscal year	368,095		233,081		182,791
Amounts recognized in the consolidated balance sheets:	'		'		'
Prepaid benefit cost	54,600		3,850		'
Accrued benefit cost	-32,386		-53,993		'
Net amount recognized	22,214		-50,143		'
Foreign Offices And Subsidiaries, Other Benefits [Member]	'		'		'
Change in benefit obligation:	'		'		'
Benefit obligation at beginning of fiscal year	30,002		24,701		'
Defined Benefit Plan, Service Cost	1,526		1,114		968
Defined Benefit Plan, Interest Cost	1,352		1,135		1,192
Plan participants' contributions	648		450		'
Actuarial loss (gain)	-2,966		975		'
Benefits paid	-2,136		-1,673		'
Translation adjustments and other	5,920		3,300		'
Benefit obligation at end of fiscal year	34,346		30,002		24,701
Change in plan assets:	'		'		'
Fair value of plan assets at beginning of fiscal year	18,185		13,370		'
Actual return (loss) on plan assets	3,611		1,866		'
Employer contributions	1,313		1,144		'
Plan participants' contributions	648		450		'
Benefits paid	-2,136		-1,673		'
Translation adjustments and other	4,224		3,028		'
Fair value of plan assets at end of fiscal year	25,845		18,185		13,370
Amounts recognized in the consolidated balance sheets:	'		'		'
Accrued benefit cost	-8,501		-11,817		'
Net amount recognized	-8,501		-11,817		'
MUTB [Member]	'		'		'
Changes in pension benefits:	'		'		'
Withdrawal of assets from employee retirement benefit trusts	'		44,851		'
Transferred obligation to the Japanese government	169,951		'		'
Transferred assets to the Japanese government	52,971		'		'
Transferred obligation to the non-contributory Corporate Defined Benefit Pension plans	224,238		'		'
Transferred assets to the non-contributory Corporate Defined Benefit Pension plans	¥ 441,313		'		'
[1]	MUTB separated the substitutional portion of its contributory CDBP and transferred the related obligation and assets to the Japanese government. The transferred obligation and assets to the Japanese government were ¥169,951 million and ¥52,971 million, respectively. Subsequent to the separation process, MUTB transferred the remaining corporate portion of its contributory CDBP into a non-contributory CDBP. The transferred obligation and assets to the non-contributory CDBP were ¥224,238 million and ¥441,313 million, respectively.
[2]	MUTB partially withdrew assets from employee retirement benefit trusts, amount of ¥44,851 million, which were established for the payment of employees' pension benefits. The related plan remains in an overfunded status as of March 31, 2013. No gains or losses have been recognized as a consequence of this transaction.

Severance_Indemnities_And_Pens7

Severance Indemnities And Pension Plans (Aggregated Accumulated Benefit Obligations) (Detail) (JPY ¥)	Mar. 31, 2014	Mar. 31, 2013
In Millions, unless otherwise specified
Domestic Subsidiaries, Pension Benefits And SIP [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Aggregated accumulated benefit obligations	¥ 1,639,563	¥ 1,808,001
Foreign Offices And Subsidiaries, Pension Benefits And Other Benefits [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Aggregated accumulated benefit obligations	¥ 318,971	¥ 262,200

Severance_Indemnities_And_Pens8

Severance Indemnities And Pension Plans (Accumulated Benefit Obligations And Fair Value Of Plan Assets For Which Accumulated Benefit Obligations In Excess Of Plan Assets) (Detail) (JPY ¥)	Mar. 31, 2014	Mar. 31, 2013
In Millions, unless otherwise specified
Domestic Subsidiaries, Pension Benefits And SIP [Member]	'	'
Defined benefit plan, pension plans with accumulated benefit obligations in excess of plan assets:	'	'
Projected benefit obligations	¥ 55,684	¥ 96,622
Accumulated benefit obligations	52,578	89,166
Fair value of plan assets	37,033	65,601
Foreign Offices And Subsidiaries, Pension Benefits And Other Benefits [Member]	'	'
Defined benefit plan, pension plans with accumulated benefit obligations in excess of plan assets:	'	'
Projected benefit obligations	57,972	264,204
Accumulated benefit obligations	54,499	243,268
Fair value of plan assets	¥ 25,812	¥ 210,793

Severance_Indemnities_And_Pens9

Severance Indemnities And Pension Plans (Amounts Recognized In Accumulated OCI) (Detail) (JPY ¥)	Mar. 31, 2014	Mar. 31, 2013
In Millions, unless otherwise specified
Domestic Subsidiaries, Pension Benefits And SIP [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Net actuarial loss	¥ 336,312	¥ 488,936
Prior service cost	-34,787	-46,580
Gross amount recognized in Accumulated OCI	301,525	442,356
Taxes	-133,606	-183,884
Net amount recognized in Accumulated OCI	167,919	258,472
Foreign Offices And Subsidiaries, Pension Benefits [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Net actuarial loss	57,474	98,654
Prior service cost	1,129	386
Gross amount recognized in Accumulated OCI	58,603	99,040
Taxes	-23,063	-38,585
Net amount recognized in Accumulated OCI	35,540	60,455
Foreign Offices And Subsidiaries, Other Benefits [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Net actuarial loss	3,585	8,314
Prior service cost	-41	-100
Gross amount recognized in Accumulated OCI	3,544	8,214
Taxes	-767	-3,212
Net amount recognized in Accumulated OCI	¥ 2,777	¥ 5,002

Recovered_Sheet7

Severance Indemnities And Pension Plans (Amounts Recognized In OCI) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Domestic Subsidiaries, Pension Benefits And SIP [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Net actuarial loss (gain) arising during the year	¥ (87,227)	¥ (110,303)
Losses (gains) due to amortization:	'	'
Net actuarial loss	-23,941	-42,496
Prior service cost	11,793	12,309
Curtailment and settlement	-41,456	-2,600
Total changes in Accumulated OCI	-140,831	-143,090
Foreign Offices And Subsidiaries, Pension Benefits [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Net actuarial loss (gain) arising during the year	-47,687	11,326
Prior service cost arising during the year	862	270
Losses (gains) due to amortization:	'	'
Net actuarial loss	-9,808	-8,030
Prior service cost	-157	-54
Curtailment and settlement	'	-95
Foreign currency translation adjustments	16,353	10,112
Total changes in Accumulated OCI	-40,437	13,529
Foreign Offices And Subsidiaries, Other Benefits [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Net actuarial loss (gain) arising during the year	-5,130	141
Losses (gains) due to amortization:	'	'
Net actuarial loss	-776	-715
Prior service cost	69	59
Net obligation at transition	'	-105
Curtailment and settlement	'	3
Foreign currency translation adjustments	1,167	895
Total changes in Accumulated OCI	¥ (4,670)	¥ 278

Recovered_Sheet8

Severance Indemnities And Pension Plans (Expected Amounts That Will Be Amortized From Accumulated OCI In Next Fiscal Year) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014
Domestic Subsidiaries, Pension Benefits And SIP [Member]	'
Expected amounts that will be amortized from accumulated OCI in next fiscal year:	'
Net actuarial loss	¥ 14,265
Prior service cost	-8,932
Total	5,333
Foreign Offices And Subsidiaries, Pension Benefits [Member]	'
Expected amounts that will be amortized from accumulated OCI in next fiscal year:	'
Net actuarial loss	6,402
Prior service cost	109
Total	6,511
Foreign Offices And Subsidiaries, Other Benefits [Member]	'
Expected amounts that will be amortized from accumulated OCI in next fiscal year:	'
Net actuarial loss	117
Prior service cost	-24
Total	¥ 93

Recovered_Sheet9

Severance Indemnities And Pension Plans (Weighted-Average Target Asset Allocation Of Plan Assets For Pension Benefits And Other Benefits) (Detail)	12 Months Ended
	Mar. 31, 2014
Domestic Subsidiaries, Pension Benefits And SIP [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Target allocation of plan assets	100.00%
Domestic Subsidiaries, Pension Benefits And SIP [Member] | Japanese Equity Securities [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Target allocation of plan assets	37.40%
Domestic Subsidiaries, Pension Benefits And SIP [Member] | Japanese Debt Securities [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Target allocation of plan assets	39.50%
Domestic Subsidiaries, Pension Benefits And SIP [Member] | Non-Japanese Equity Securities [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Target allocation of plan assets	11.80%
Domestic Subsidiaries, Pension Benefits And SIP [Member] | Non-Japanese Debt Securities [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Target allocation of plan assets	4.70%
Domestic Subsidiaries, Pension Benefits And SIP [Member] | Short-term Assets [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Target allocation of plan assets	6.60%
Foreign Offices And Subsidiaries, Pension Benefits [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Target allocation of plan assets	100.00%
Foreign Offices And Subsidiaries, Pension Benefits [Member] | Japanese Equity Securities [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Target allocation of plan assets	0.40%
Foreign Offices And Subsidiaries, Pension Benefits [Member] | Non-Japanese Equity Securities [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Target allocation of plan assets	57.90%
Foreign Offices And Subsidiaries, Pension Benefits [Member] | Non-Japanese Debt Securities [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Target allocation of plan assets	27.90%
Foreign Offices And Subsidiaries, Pension Benefits [Member] | Real Estate [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Target allocation of plan assets	9.70%
Foreign Offices And Subsidiaries, Pension Benefits [Member] | Short-term Assets [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Target allocation of plan assets	4.10%
Foreign Offices And Subsidiaries, Other Benefits [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Target allocation of plan assets	100.00%
Foreign Offices And Subsidiaries, Other Benefits [Member] | Non-Japanese Equity Securities [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Target allocation of plan assets	70.00%
Foreign Offices And Subsidiaries, Other Benefits [Member] | Non-Japanese Debt Securities [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Target allocation of plan assets	30.00%

Recovered_Sheet10

Severance Indemnities And Pension Plans (Expected Contributions To Plan Assets In Next Fiscal Year) (Detail) (JPY ¥)	12 Months Ended
In Billions, unless otherwise specified	Mar. 31, 2014
Domestic Subsidiaries, Pension Benefits And SIP [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Estimated future employer contributions in next fiscal year	¥ 39.4
Foreign Offices And Subsidiaries, Pension Benefits [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Estimated future employer contributions in next fiscal year	14.3
Foreign Offices And Subsidiaries, Other Benefits [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Estimated future employer contributions in next fiscal year	¥ 2.3

Recovered_Sheet11

Severance Indemnities And Pension Plans (Estimated Future Benefit Payments) (Detail) (JPY ¥)	Mar. 31, 2014
In Millions, unless otherwise specified
Domestic Subsidiaries, Pension Benefits And SIP [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
For the fiscal year ending March 31, 2015	¥ 79,808
For the fiscal year ending March 31, 2016	81,641
For the fiscal year ending March 31, 2017	82,599
For the fiscal year ending March 31, 2018	82,740
For the fiscal year ending March 31, 2019	82,608
Thereafter (for the fiscal year ending March 31, 2020-2024)	410,139
Foreign Offices And Subsidiaries, Pension Benefits [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
For the fiscal year ending March 31, 2015	11,242
For the fiscal year ending March 31, 2016	12,173
For the fiscal year ending March 31, 2017	13,517
For the fiscal year ending March 31, 2018	14,614
For the fiscal year ending March 31, 2019	15,906
Thereafter (for the fiscal year ending March 31, 2020-2024)	108,484
Foreign Offices And Subsidiaries, Other Benefits [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
For the fiscal year ending March 31, 2015	1,819
For the fiscal year ending March 31, 2016	1,935
For the fiscal year ending March 31, 2017	2,036
For the fiscal year ending March 31, 2018	2,160
For the fiscal year ending March 31, 2019	2,255
Thereafter (for the fiscal year ending March 31, 2020-2024)	¥ 12,778

Recovered_Sheet12

Severance Indemnities And Pension Plans (Fair Value Of Each Major Category Of Plan Assets For Pension Benefits And SIP Investments Domestic Subsidiaries) (Detail) (Domestic Subsidiaries, Pension Benefits And SIP [Member], JPY ¥)

12 Months Ended

In Millions, unless otherwise specified

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Level 1 [Member]

Level 1 [Member]

Level 2 [Member]

Level 2 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Japanese Government Bonds [Member]

Japanese Government Bonds [Member]

Japanese Government Bonds [Member]

Japanese Government Bonds [Member]

Non-Japanese Government Bonds [Member]

Non-Japanese Government Bonds [Member]

Non-Japanese Government Bonds [Member]

Non-Japanese Government Bonds [Member]

Non-Japanese Government Bonds [Member]

Non-Japanese Government Bonds [Member]

Other Debt Securities [Member]

Other Debt Securities [Member]

Other Debt Securities [Member]

Other Debt Securities [Member]

Other Debt Securities [Member]

Other Debt Securities [Member]

Other Debt Securities [Member]

Other Debt Securities [Member]

Other Debt Securities [Member]

Japanese Marketable Equity Securities [Member]

Japanese Marketable Equity Securities [Member]

Japanese Marketable Equity Securities [Member]

Japanese Marketable Equity Securities [Member]

Japanese Marketable Equity Securities [Member]

Japanese Marketable Equity Securities [Member]

Non-Japanese Marketable Equity Securities [Member]

Non-Japanese Marketable Equity Securities [Member]

Non-Japanese Marketable Equity Securities [Member]

Non-Japanese Marketable Equity Securities [Member]

Non-Japanese Marketable Equity Securities [Member]

Non-Japanese Marketable Equity Securities [Member]

Non-Japanese Marketable Equity Securities [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Other Investment Funds [Member]

Other Investment Funds [Member]

Other Investment Funds [Member]

Other Investment Funds [Member]

Other Investment Funds [Member]

Other Investment Funds [Member]

Other Investment Funds [Member]

Japanese General Account Of Life Insurance Companies [Member]

Japanese General Account Of Life Insurance Companies [Member]

Japanese General Account Of Life Insurance Companies [Member]

Japanese General Account Of Life Insurance Companies [Member]

Other Investments [Member]

Other Investments [Member]

Other Investments [Member]

Other Investments [Member]

Other Investments [Member]

Other Investments [Member]

Level 1 [Member]

Level 1 [Member]

Level 1 [Member]

Level 1 [Member]

Level 2 [Member]

Level 2 [Member]

Level 1 [Member]

Level 1 [Member]

Level 2 [Member]

Level 2 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 1 [Member]

Level 1 [Member]

Level 2 [Member]

Level 2 [Member]

Level 1 [Member]

Level 1 [Member]

Level 2 [Member]

Level 2 [Member]

Level 3 [Member]

Level 2 [Member]

Level 2 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Japanese Marketable Equity Securities [Member]

Japanese Marketable Equity Securities [Member]

Japanese Marketable Equity Securities [Member]

Japanese Marketable Equity Securities [Member]

Japanese Debt Securities [Member]

Japanese Debt Securities [Member]

Japanese Debt Securities [Member]

Japanese Debt Securities [Member]

Non-Japanese Marketable Equity Securities [Member]

Non-Japanese Marketable Equity Securities [Member]

Non-Japanese Marketable Equity Securities [Member]

Non-Japanese Marketable Equity Securities [Member]

Non-Japanese Debt Securities [Member]

Non-Japanese Debt Securities [Member]

Non-Japanese Debt Securities [Member]

Non-Japanese Debt Securities [Member]

Non-Japanese Debt Securities [Member]

Non-Japanese Debt Securities [Member]

Non-Japanese Debt Securities [Member]

Other [Member]

Other [Member]

Other [Member]

Other [Member]

Other [Member]

Level 2 [Member]

Level 2 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 2 [Member]

Level 2 [Member]

Level 1 [Member]

Level 1 [Member]

Level 2 [Member]

Level 2 [Member]

Level 2 [Member]

Level 2 [Member]

Level 2 [Member]

Level 2 [Member]

Level 2 [Member]

Level 2 [Member]

Level 2 [Member]

Level 2 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 2 [Member]

Level 2 [Member]

Level 3 [Member]

Pension benefits and SIP Investments:

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'

Defined benefit plan, fair value of plan assets

¥ 2,004,329

¥ 1,920,577

¥ 812,987

¥ 773,666

¥ 1,134,571

¥ 1,085,300

¥ 56,771

¥ 61,611

¥ 55,487

¥ 65,309

¥ 76,763

¥ 65,309

¥ 76,763

¥ 21,840

¥ 16,659

¥ 19,799

¥ 13,898

¥ 2,041

¥ 2,761

¥ 18,304

[1]

¥ 24,802

[1]

¥ 523

[1]

¥ 151

[1]

¥ 11,798

[1]

¥ 18,517

[1]

¥ 5,983

[1]

¥ 6,134

[1]

¥ 5,995

¥ 713,279

[2]

¥ 661,980

[2]

¥ 713,152

[2]

¥ 661,832

[2]

¥ 127

[2]

¥ 148

[2]

¥ 13,288

¥ 19,593

¥ 12,166

¥ 19,386

¥ 1,122

¥ 207

¥ 87

¥ 715,644

¥ 729,104

¥ 708,302

¥ 722,258

¥ 7,342

¥ 6,846

¥ 8,308

¥ 26,792

[2]

¥ 46,175

[2]

¥ 26,792

[2]

¥ 46,175

[2]

¥ 400,132

[1]

¥ 403,006

[1]

¥ 400,132

[1]

¥ 403,006

[1]

¥ 176,710

¥ 190,367

¥ 176,710

¥ 190,367

¥ 98,984

¥ 71,933

¥ 91,642

¥ 65,087

¥ 7,342

¥ 6,846

¥ 5,807

¥ 13,026

¥ 17,623

¥ 13,026

¥ 17,623

¥ 2,501

¥ 175,551

¥ 147,151

¥ 132,105

¥ 98,520

¥ 43,446

¥ 48,631

¥ 41,097

¥ 173,398

[3]

¥ 163,503

[3]

¥ 173,398

[3]

¥ 163,503

[3]

¥ 107,716

¥ 81,022

¥ 2,038

¥ 1,636

¥ 105,678

¥ 79,386

Fair value of debt securities issued by the MUFG Group included in plan assets

401

471

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'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of fair value of debt securities issued by the MUFG Group to total fair value of plan assets

0.02%

0.02%

'

'

'

'

'

'

'

'

'

'

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'

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'

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'

'

'

'

'

'

'

'

Fair value of common stocks issued by the MUFG Group included in plan assets

¥ 7,354

¥ 6,864

'

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of fair value of common stocks issued by the MUFG Group to total fair value of plan assets

0.31%

0.32%

'

'

'

'

'

'

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Guaranteed rate of return of Japanese general accounts of life insurance companies

1.24%

1.17%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

[1]

These debt securities include debt securities issued by the MUFG Group in the amount of ¥471 million (0.02% of plan assets) and ¥401 million (0.02% of plan assets) to the pension benefits and SIPs at March 31, 2013 and 2014, respectively.

[2]

Japanese marketable equity securities include common stocks issued by the MUFG Group in the amount of ¥6,864 million (0.32% of plan assets) and ¥7,354 million (0.31% of plan assets) to the pension benefits and SIPs at March 31, 2013 and 2014, respectively.

[3]

"Japanese general accounts of life insurance companies" is a contract with life insurance companies that guarantees a return of approximately 1.17% from April 1, 2012 to March 31, 2013 and 1.24% from April 1, 2013 to March 31, 2014.

Recovered_Sheet13

Severance Indemnities And Pension Plans (Fair Value Of Each Major Category Of Plan Assets For Pension Benefits And SIP Investments Foreign Offices And Subsidiaries) (Detail) (Foreign Offices And Subsidiaries, Pension Benefits [Member], JPY ¥)

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

In Millions, unless otherwise specified

Level 1 [Member]

Level 1 [Member]

Level 2 [Member]

Level 2 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Non-Japanese Government Bonds [Member]

Non-Japanese Government Bonds [Member]

Non-Japanese Government Bonds [Member]

Non-Japanese Government Bonds [Member]

Other Debt Securities [Member]

Other Debt Securities [Member]

Other Debt Securities [Member]

Other Debt Securities [Member]

Non-Japanese Marketable Equity Securities [Member]

Non-Japanese Marketable Equity Securities [Member]

Non-Japanese Marketable Equity Securities [Member]

Non-Japanese Marketable Equity Securities [Member]

Other Investment Funds [Member]

Other Investment Funds [Member]

Other Investment Funds [Member]

Other Investment Funds [Member]

Other Investment Funds [Member]

Other Investment Funds [Member]

Other Investment Funds [Member]

Other Investment Funds [Member]

Other Investment Funds [Member]

Other Investments [Member]

Other Investments [Member]

Other Investments [Member]

Other Investments [Member]

Other Investments [Member]

Other Investments [Member]

Other Investments [Member]

Other Investments [Member]

Other Investments [Member]

MUAH [Member]

MUAH [Member]

Level 2 [Member]

Level 2 [Member]

Level 2 [Member]

Level 2 [Member]

Level 1 [Member]

Level 1 [Member]

Level 1 [Member]

Level 1 [Member]

Level 2 [Member]

Level 2 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 1 [Member]

Level 1 [Member]

Level 2 [Member]

Level 2 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Pension benefits and SIP Investments:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Defined benefit plan, fair value of plan assets

¥ 368,095

¥ 233,081

¥ 182,791

¥ 180,772

¥ 106,141

¥ 157,682

¥ 110,471

¥ 29,641

¥ 16,469

¥ 12,626

¥ 13,443

¥ 7,600

¥ 13,443

¥ 7,600

¥ 52,463

[1]

¥ 33,315

[1]

¥ 52,463

[1]

¥ 33,315

[1]

¥ 24,515

¥ 13,720

¥ 24,515

¥ 13,720

¥ 269,480

[2]

¥ 171,136

[2]

¥ 155,637

¥ 91,582

¥ 87,103

¥ 65,068

¥ 26,740

¥ 14,486

¥ 12,282

¥ 8,194

¥ 7,310

¥ 620

¥ 839

¥ 4,673

¥ 4,488

¥ 2,901

¥ 1,983

¥ 344

'

'

Fair value of debt securities issued by the MUFG Group included in plan assets

401

471

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of fair value of debt securities issued by the MUFG Group to total fair value of plan assets

0.02%

0.02%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value of mutual funds, recorded in other investment funds

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

148,360

87,243

Fair value of real estate funds, recorded in other investment funds

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

¥ 25,486

¥ 13,531

[1]

These debt securities include debt securities issued by the MUFG Group in the amount of ¥471 million (0.02% of plan assets) and ¥401 million (0.02% of plan assets) to the pension benefits and SIPs at March 31, 2013 and 2014, respectively.

[2]

Other investment funds of the foreign offices and subsidiaries are mainly comprised of ¥87,243 million of mutual funds and ¥13,531 million of real estate funds, and of ¥148,360 million of mutual funds and ¥25,486 million of real estate funds, which were held by MUAH at December 31, 2012 and 2013, respectively.

Recovered_Sheet14

Severance Indemnities And Pension Plans (Fair Value Of Each Major Category Of Plan Assets For Other Post Retirement Plan Investments) (Detail) (Foreign Offices And Subsidiaries, Other Benefits [Member], JPY ¥)	Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2012
In Millions, unless otherwise specified
Foreign offices and subsidiaries, other post retirement plan investments:	'		'		'
Fair value of plan assets	¥ 25,845		¥ 18,185		¥ 13,370
Level 1 [Member]	'		'		'
Foreign offices and subsidiaries, other post retirement plan investments:	'		'		'
Fair value of plan assets	13,531		8,901		'
Level 2 [Member]	'		'		'
Foreign offices and subsidiaries, other post retirement plan investments:	'		'		'
Fair value of plan assets	12,314		9,284		'
Level 3 [Member]	'		'		'
Foreign offices and subsidiaries, other post retirement plan investments:	'		'		'
Fair value of plan assets	'		'		'
Other Debt Securities [Member]	'		'		'
Foreign offices and subsidiaries, other post retirement plan investments:	'		'		'
Fair value of plan assets	5,548		3,619		'
Other Debt Securities [Member] | Level 2 [Member]	'		'		'
Foreign offices and subsidiaries, other post retirement plan investments:	'		'		'
Fair value of plan assets	5,548		3,619		'
Other Investment Funds [Member]	'		'		'
Foreign offices and subsidiaries, other post retirement plan investments:	'		'		'
Fair value of plan assets	13,531	[1]	8,901	[1]	'
Other Investment Funds [Member] | Level 1 [Member]	'		'		'
Foreign offices and subsidiaries, other post retirement plan investments:	'		'		'
Fair value of plan assets	13,531	[1]	8,901	[1]	'
Other Investments [Member]	'		'		'
Foreign offices and subsidiaries, other post retirement plan investments:	'		'		'
Fair value of plan assets	6,766		5,665		'
Other Investments [Member] | Level 2 [Member]	'		'		'
Foreign offices and subsidiaries, other post retirement plan investments:	'		'		'
Fair value of plan assets	¥ 6,766		¥ 5,665		'
[1]	Other investment funds mainly consist of mutual funds and common collective funds.

Recovered_Sheet15

Severance Indemnities And Pension Plans (Reconciliation Of Plan Assets Measured At Fair Value Using Significant Unobservable Inputs (Level3)) (Detail) (JPY ¥)

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

In Millions, unless otherwise specified

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Foreign Offices And Subsidiaries, Pension Benefits [Member]

Foreign Offices And Subsidiaries, Pension Benefits [Member]

Foreign Offices And Subsidiaries, Pension Benefits [Member]

Foreign Offices And Subsidiaries, Pension Benefits [Member]

Foreign Offices And Subsidiaries, Pension Benefits [Member]

Foreign Offices And Subsidiaries, Pension Benefits [Member]

Foreign Offices And Subsidiaries, Pension Benefits [Member]

Foreign Offices And Subsidiaries, Pension Benefits [Member]

Foreign Offices And Subsidiaries, Pension Benefits [Member]

Foreign Offices And Subsidiaries, Pension Benefits [Member]

Foreign Offices And Subsidiaries, Pension Benefits [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Other Debt Securities [Member]

Other Debt Securities [Member]

Non-Japanese Marketable Equity Securities [Member]

Non-Japanese Marketable Equity Securities [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Other Investment Funds [Member]

Other Investment Funds [Member]

Other Investments [Member]

Other Investments [Member]

Other Debt Securities [Member]

Other Debt Securities [Member]

Non-Japanese Marketable Equity Securities [Member]

Non-Japanese Marketable Equity Securities [Member]

Other Investment Funds [Member]

Other Investment Funds [Member]

Other Investments [Member]

Other Investments [Member]

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Domestic Subsidiaries, Pension Benefits And SIP [Member]

Foreign Offices And Subsidiaries, Pension Benefits [Member]

Foreign Offices And Subsidiaries, Pension Benefits [Member]

Foreign Offices And Subsidiaries, Pension Benefits [Member]

Foreign Offices And Subsidiaries, Pension Benefits [Member]

Foreign Offices And Subsidiaries, Pension Benefits [Member]

Foreign Offices And Subsidiaries, Pension Benefits [Member]

Non-Japanese Debt Securities [Member]

Non-Japanese Debt Securities [Member]

Other [Member]

Other [Member]

Other Debt Securities [Member]

Other Debt Securities [Member]

Non-Japanese Marketable Equity Securities [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Japanese Pooled Funds [Member]

Other Investment Funds [Member]

Other Investment Funds [Member]

Other Investment Funds [Member]

Other Investment Funds [Member]

Other Investments [Member]

Other Investments [Member]

Non-Japanese Debt Securities [Member]

Non-Japanese Debt Securities [Member]

Other [Member]

Defined Benefit Plan Disclosure [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value of plan assets at beginning of fiscal year

¥ 2,004,329

¥ 1,920,577

¥ 18,304

[1]

¥ 24,802

[1]

¥ 13,288

¥ 19,593

¥ 715,644

¥ 729,104

¥ 98,984

¥ 71,933

¥ 13,026

¥ 17,623

¥ 175,551

¥ 147,151

¥ 107,716

¥ 81,022

¥ 368,095

¥ 233,081

¥ 182,791

¥ 52,463

[1]

¥ 33,315

[1]

¥ 24,515

¥ 13,720

¥ 269,480

[2]

¥ 171,136

[2]

¥ 8,194

¥ 7,310

¥ 61,611

¥ 55,487

¥ 6,134

[1]

¥ 5,995

¥ 87

¥ 6,846

¥ 8,308

¥ 6,846

¥ 5,807

¥ 2,501

¥ 48,631

¥ 41,097

¥ 16,469

¥ 12,626

¥ 14,486

¥ 12,282

¥ 1,983

¥ 344

Defined benefit plan, Realized gains (losses)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-2,620

-341

-4

18

30

'

'

'

'

'

-2,616

-389

11

'

'

'

11

'

Defined benefit plan, Unrealized gains (losses)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,779

5,448

-85

409

'

483

1,042

483

1,042

'

1,381

3,997

7,552

2,283

6,688

1,075

864

1,208

Defined benefit plan, Purchases, sales and settlements

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-3,949

-4,871

-12

-248

-117

13

-3

13

-3

'

-3,950

-4,503

5,609

1,560

5,566

1,129

43

431

Defined benefit plan, Transfer into Level 3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8,429

'

'

'

'

'

'

'

'

'

8,429

'

'

'

'

'

'

Defined benefit plan, Transfer out of Level 3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-50

-2,541

-50

-40

'

'

-2,501

'

'

-2,501

'

'

'

'

'

'

'

'

Fair value of plan assets at end of fiscal year

¥ 2,004,329

¥ 1,920,577

¥ 18,304

[1]

¥ 24,802

[1]

¥ 13,288

¥ 19,593

¥ 715,644

¥ 729,104

¥ 98,984

¥ 71,933

¥ 13,026

¥ 17,623

¥ 175,551

¥ 147,151

¥ 107,716

¥ 81,022

¥ 368,095

¥ 233,081

¥ 182,791

¥ 52,463

[1]

¥ 33,315

[1]

¥ 24,515

¥ 13,720

¥ 269,480

[2]

¥ 171,136

[2]

¥ 8,194

¥ 7,310

¥ 56,771

¥ 61,611

¥ 5,983

[1]

¥ 6,134

[1]

'

¥ 7,342

¥ 6,846

¥ 7,342

¥ 6,846

'

¥ 43,446

¥ 48,631

¥ 29,641

¥ 16,469

¥ 26,740

¥ 14,486

¥ 2,901

¥ 1,983

[1]

These debt securities include debt securities issued by the MUFG Group in the amount of ¥471 million (0.02% of plan assets) and ¥401 million (0.02% of plan assets) to the pension benefits and SIPs at March 31, 2013 and 2014, respectively.

[2]

Other investment funds of the foreign offices and subsidiaries are mainly comprised of ¥87,243 million of mutual funds and ¥13,531 million of real estate funds, and of ¥148,360 million of mutual funds and ¥25,486 million of real estate funds, which were held by MUAH at December 31, 2012 and 2013, respectively.

Other_Assets_And_Liabilities_N

Other Assets And Liabilities (Narrative) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Schedule of Equity Method Investments [Line Items]	'	'	'
Marketable equity securities included in investments in equity method investees, carrying value	¥ 1,033,806	¥ 788,250	'
Marketable equity securities included in investment in equity method investees, aggregated market values	1,789,053	1,203,241	'
Investment in equity method investees, recognized impairment losses of other-than-temporary declines in the value of investments in certain affiliated companies	32,824	14,635	580,474
MSMS [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Investment in equity method investees, carrying values	163,520	174,935	'
Morgan Stanley [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Investment in equity method investees, carrying values	¥ 825,385	¥ 664,031	'
Equity method investment, Ownership percentage	21.91%	'	'

Other_Assets_And_Liabilities_M

Other Assets And Liabilities (Major Components Of Other Assets And Liabilities) (Detail) (JPY ¥)	Mar. 31, 2014	Mar. 31, 2013
In Millions, unless otherwise specified
Other assets:	'	'
Account receivable: Receivable from brokers, dealers and customers for securities transactions	¥ 2,073,499	¥ 1,217,164
Account receivable: Other	1,135,009	956,000
Investments in equity method investees	1,620,168	1,273,847
Prepaid benefit cost (Note 13)	412,417	117,873
Cash collateral pledged (Note 8)	1,045,851	1,573,698
Other	1,731,642	1,647,213
Total	8,018,586	6,785,795
Other liabilities:	'	'
Account payable: Payables to brokers, dealers and customers for securities transactions	583,845	1,047,514
Account payable: Other	1,499,191	1,053,294
Deferred tax liabilities	253,714	127,218
Allowance for off-balance sheet credit instruments	69,871	55,915
Accrued benefit cost (Note 13)	61,026	96,844
Guarantees and indemnifications	44,824	50,433
Cash collateral received (Note 8)	454,506	366,544
Accrued and other liabilities	2,640,034	2,250,927
Total	¥ 5,607,011	¥ 5,048,689

Other_Assets_And_Liabilities_S

Other Assets And Liabilities (Summarized Financial Information Of Morgan Stanley) (Detail) (Morgan Stanley [Member], JPY ¥)	12 Months Ended
In Billions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Morgan Stanley [Member]	'	'	'
Equity Method Investment, Summarized Financial Information, Assets	'	'	'
Trading assets	¥ 26,712	¥ 25,134	'
Federal funds sold and securities purchased under agreements to resell	11,072	13,206	'
Securities borrowed	15,190	12,765	'
Total assets	85,566	75,370	'
Equity Method Investment, Summarized Financial Information, Liabilities and Equity	'	'	'
Trading liabilities	11,485	12,459	'
Securities sold under agreements to repurchase and Securities loaned	15,083	15,012	'
Long-term borrowings	15,785	15,532	'
Total liabilities	78,334	68,740	'
Nonredeemable noncontrolling interests	329	317	'
Equity Method Investment, Summarized Financial Information, Income and Loss	'	'	'
Net revenues	3,333	2,271	2,517
Total non-interest expenses	2,812	2,105	2,084
Income from continuing operations before income taxes	521	166	433
Net income applicable to Morgan Stanley	¥ 349	¥ 100	¥ 244

Other_Assets_And_Liabilities_S1

Other Assets And Liabilities (Summarized Financial Information Of Equity Method Investees Other Than Morgan Stanley) (Detail) (Equity Method Investees Other Than Morgan Stanley [Member], JPY ¥)	12 Months Ended
In Billions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Equity Method Investees Other Than Morgan Stanley [Member]	'	'	'
Equity Method Investment, Summarized Financial Information, Assets	'	'	'
Net loans	¥ 9,493	¥ 7,673	'
Total assets	16,277	12,906	'
Equity Method Investment, Summarized Financial Information, Liabilities and Equity	'	'	'
Deposits	4,674	2,729	'
Total liabilities	12,247	9,455	'
Noncontrolling interests	457	181	'
Equity Method Investment, Summarized Financial Information, Income and Loss	'	'	'
Total interest income	543	444	475
Total interest expense	165	92	98
Net interest income	378	352	377
Provision for credit losses	59	55	51
Income before income tax expense	214	163	128
Net income	¥ 159	¥ 124	¥ 75

Offsetting_Of_Derivatives_Repu2

Offsetting Of Derivatives, Repurchase Agreements, And Securities Lending Transactions (Summary Of Offsetting Of Derivatives, Repurchase Agreements, And Securities Lending Transactions) (Detail) (JPY ¥)	Mar. 31, 2014		Mar. 31, 2013
Offsetting Derivatives, Financial Assets and Financial Liabilities [Line Items]	'		'
Derivative assets, Gross amounts of recognized assets/liabilities	¥ 11,810,000,000,000		¥ 14,648,000,000,000
Derivative assets, Gross amounts offset in the consolidated balance sheet	'		'
Derivative assets, Net amounts presented in the consolidated balance sheet	11,810,000,000,000	[1],[2],[3]	14,648,000,000,000	[1],[2],[3]
Derivative assets, Gross amounts not offset in the consolidated balance sheet, Financial instruments	-9,552,000,000,000		-12,341,000,000,000
Derivative assets, Gross amounts not offset in the consolidated balance sheet, Cash collateral received/pledged	-360,000,000,000		-283,000,000,000
Derivative assets, Net amounts	1,898,000,000,000		2,024,000,000,000
Receivables under resale agreements, Gross amounts of recognized assets/liabilities	10,346,000,000,000		6,960,000,000,000
Receivables under resale agreements, Gross amounts offset in the consolidated balance sheet	-3,046,000,000,000		-1,300,000,000,000
Receivables under resale agreements, Net amounts presented in the consolidated balance sheet	7,300,037,000,000		5,659,512,000,000
Receivables under resale agreements, Gross amounts not offset in the consolidated balance sheet, Financial instruments	-6,502,000,000,000		-4,849,000,000,000
Receivables under resale agreements, Gross amounts not offset in the consolidated balance sheet, Cash collateral received/pledged	-7,000,000,000		'
Receivables under resale agreements, Net amounts	791,000,000,000		811,000,000,000
Receivables under securities borrowing transactions, Gross amounts of recognized assets/liabilities	4,210,000,000,000		2,615,000,000,000
Receivables under securities borrowing transactions, Gross amounts offset in the consolidated balance sheet	'		'
Receivables under securities borrowing transactions, Net amounts presented in the consolidated balance sheet	4,210,057,000,000		2,615,172,000,000
Receivables under securities borrowing transactions, Gross amounts not offset in the consolidated balance sheet, Financial instruments	-3,614,000,000,000		-1,815,000,000,000
Receivables under securities borrowing transactions, Gross amounts not offset in the consolidated balance sheet, Cash collateral received/pledged	'		'
Receivables under securities borrowing transactions, Net amounts	596,000,000,000		800,000,000,000
Financial assets, Gross amounts of recognized assets/liabilities, Total	26,366,000,000,000		24,223,000,000,000
Financial assets, Gross amounts offset in the consolidated balance sheet, Total	-3,046,000,000,000		-1,300,000,000,000
Financial assets, Net amounts presented in the consolidated balance sheet, Total	23,320,000,000,000		22,923,000,000,000
Financial assets, Gross amounts not offset in the consolidated balance sheet, Financial instruments, Total	-19,668,000,000,000		-19,005,000,000,000
Financial assets, Gross amounts not offset in the consolidated balance sheet, Cash collateral received/pledged, Total	-367,000,000,000		-283,000,000,000
Financial assets, Net amounts, Total	3,285,000,000,000		3,635,000,000,000
Derivative liabilities, Gross amounts of recognized assets/liabilities	11,765,000,000,000		14,867,000,000,000
Derivative liabilities, Gross amounts offset in the consolidated balance sheet	'		'
Derivative liabilities, Net amounts presented in the consolidated balance sheet	11,765,000,000,000	[1],[2],[3]	14,867,000,000,000	[1],[2],[3]
Derivative liabilities, Gross amounts not offset in the consolidated balance sheet, Financial instruments	-9,437,000,000,000		-12,134,000,000,000
Derivative liabilities, Gross amounts not offset in the consolidated balance sheet, Cash collateral received/pledged	-984,000,000,000		-1,207,000,000,000
Derivative liabilities, Net amounts	1,344,000,000,000		1,526,000,000,000
Payables under repurchase agreements, Gross amounts of recognized assets/liabilities	24,674,000,000,000	[4]	17,188,000,000,000	[4]
Payables under repurchase agreements, Gross amounts offset in the consolidated balance sheet	-3,046,000,000,000	[4]	-1,300,000,000,000	[4]
Payables under repurchase agreements, Net amounts presented in the consolidated balance sheet	21,628,000,000,000	[4]	15,888,000,000,000	[4]
Payables under repurchase agreements, Gross amounts not offset in the consolidated balance sheet, Financial instruments	-21,345,000,000,000	[4]	-15,804,000,000,000	[4]
Payables under repurchase agreements, Gross amounts not offset in the consolidated balance sheet, Cash collateral received/pledged	-5,000,000,000	[4]	'	[4]
Payables under repurchase agreements, Net amounts	278,000,000,000	[4]	84,000,000,000	[4]
Payables under securities lending transactions, Gross amounts of recognized assets/liabilities	5,521,000,000,000		3,993,000,000,000
Payables under securities lending transactions, Gross amounts offset in the consolidated balance sheet	'		'
Payables under securities lending transactions, Net amounts presented in the consolidated balance sheet	5,520,718,000,000		3,992,950,000,000
Payables under securities lending transactions, Gross amounts not offset in the consolidated balance sheet, Financial instruments	-4,795,000,000,000		-1,695,000,000,000
Payables under securities lending transactions, Gross amounts not offset in the consolidated balance sheet, Cash collateral received/pledged	-9,000,000,000		'
Payables under securities lending transactions, Net amounts	717,000,000,000		2,298,000,000,000
Obligations to return securities received as collateral, Gross amounts of recognized assets/liabilities	3,971,000,000,000		3,035,000,000,000
Obligations to return securities received as collateral, Gross amounts offset in the consolidated balance sheet	'		'
Obligations to return securities received as collateral, Net amounts presented in the consolidated balance sheet	3,971,454,000,000		3,034,547,000,000
Obligations to return securities received as collateral, Gross amounts not offset in the consolidated balance sheet, Financial instruments	-220,000,000,000		-374,000,000,000
Obligations to return securities received as collateral, Gross amounts not offset in the consolidated balance sheet, Cash collateral received/pledged	'		'
Obligations to return securities received as collateral, Net amounts	3,751,000,000,000		2,661,000,000,000
Financial liabilities, Gross amounts of recognized assets/liabilities, Total	45,931,000,000,000		39,083,000,000,000
Financial liabilities, Gross amounts offset in the consolidated balance sheet, Total	-3,046,000,000,000		-1,300,000,000,000
Financial liabilities, Net amounts presented in the consolidated balance sheet, Total	42,885,000,000,000		37,783,000,000,000
Financial liabilities, Gross amounts not offset in the consolidated balance sheet, Financial instruments, Total	-35,797,000,000,000		-30,007,000,000,000
Financial liabilities, Gross amounts not offset in the consolidated balance sheet, Cash collateral received/pledged, Total	-998,000,000,000		-1,207,000,000,000
Financial liabilities, Net amounts, Total	6,090,000,000,000		6,569,000,000,000
Payables under long-term repurchase agreements	¥ 360,220,000,000		¥ 188,100,000,000
[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]	This table does not include contracts with embedded derivatives for which the fair value option has been elected.
[3]	For more information about fair value measurement and assumptions used to measure the fair value of derivatives, see Note 31.
[4]	Payables under repurchase agreements in the above table include those under long-term repurchase agreements of ¥188,100 million and ¥360,220 million at March 31, 2013 and 2014, respectively, which are included in Long-term debt in the accompanying consolidated balance sheets.

Preferred_Stock_Narrative_Deta

Preferred Stock (Narrative) (Detail) (JPY ¥)

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Jun. 27, 2013

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2009

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Preferred Stock [Member]

Preferred Stock [Member]

Preferred Stock [Member]

Preferred Stock [Member]

Preferred Stock [Member]

Preferred Stock [Member]

Preferred Stock [Member]

Preferred Stock [Member]

Preferred Stock [Member]

Preferred Stock [Member]

Preferred Stock [Member]

Preferred Stock [Member]

Preferred Stock [Member]

Preferred Stock, Class 1 [Member]

Preferred Stock, Class 1 [Member]

Preferred Stock, Class 3 [Member]

Preferred Stock, Class 3 [Member]

Preferred Stock, Class 3 [Member]

Preferred Stock, Class 5 [Member]

Preferred Stock, Class 5 [Member]

Preferred Stock, Class 5 [Member]

Preferred Stock, Class 6 [Member]

Preferred Stock, Class 7 [Member]

Preferred Stock, Class 11 [Member]

Class of Stock [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of shares authorized

'

'

'

'

'

'

'

'

120,000,000

400,000,000

'

'

200,000,000

200,000,000

1,000

Liquidation distribution per share

'

'

'

'

'

'

'

'

'

¥ 2,500

'

'

'

'

¥ 1,000

Preferred stock, value

¥ 442,100,000,000

¥ 442,100,000,000

¥ 442,100,000,000

¥ 442,100,000,000

¥ 122,100,000,000

¥ 122,100,000,000

¥ 125,000,000,000

'

¥ 125,000,000,000

¥ 195,000,000,000

'

¥ 195,000,000,000

'

'

'

Percentage of issue price of newly issued shares required to be designated as capital stock at the time of incorporation or share issuance under the Company Law, Minimum

'

'

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

Annual dividend per share, Maximum

'

'

'

'

'

'

'

'

'

¥ 250

'

'

'

'

'

Dividend payment, terms

'

'

'

'

'

'

'

'

'

'¥115 per share annually, except as of March 31, 2009

'

'

'

'

'

Annual dividend per share

'

'

'

'

'

'

'

'

'

¥ 115

¥ 43

'

'

'

¥ 5.3

Contract term up to July 31, 2014

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'At an initial conversion price of ¥918.70 per share of common stock, subject to anti-dilution adjustments. The conversion price was subject to reset annually on July 15 from 2006 to 2013 to the average market price of the common stock for the 30 trading day period, if the average market price was less than the conversion price prior to the reset but not less than ¥918.70 per share. The acquisition price and the acquisition floor price of Class 11 Preferred Stock were adjusted as ¥889.60 per share on December 15, 2008, ¥888.40 per share on January 14, 2009, ¥867.60 per share on December 21, 2009, and ¥865.90 per share on December 25, 2009, in accordance with the provisions relating to the adjustment of the acquisition price set forth in the terms and conditions of Class 11 Preferred Stock.

Initial conversion price per share

'

'

'

'

'

'

'

'

'

'

'

'

'

'

¥ 918.7

Number of trading days of average market price of the common stock used for calculation of conversion price to be reset

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'30 days

Floor reset price per share of preferred stock converted into common stock

'

'

'

'

'

'

'

'

'

'

'

'

'

'

¥ 918.7

Adjusted acquisition price and acquisition floor price per share on Dec. 15, 2008

'

'

'

'

'

'

'

'

'

'

'

'

'

'

¥ 889.6

Adjusted acquisition price and acquisition floor price per share on Jan. 14, 2009

'

'

'

'

'

'

'

'

'

'

'

'

'

'

¥ 888.4

Adjusted acquisition price and acquisition floor price per share on Dec. 21, 2009

'

'

'

'

'

'

'

'

'

'

'

'

'

'

¥ 867.6

Adjusted acquisition price and acquisition floor price per share on Dec. 25, 2009

'

'

'

'

'

'

'

'

'

'

'

'

'

'

¥ 865.9

Contract term on mandatory conversion, Aug. 1, 2014

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'Mandatorily converted into shares of common stock at a conversion ratio of ¥1,000 divided by the higher of the average market price of the common stock for the 30 trading day period beginning 45 trading days prior to August 1, 2014 or ¥802.60.

Amount divided by the higher of the average market price of the common stock for mandatory conversion ratio

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,000

Number of trading days prior to August 1, 2014 from when the calculation of the average market price of the common stock starts

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'45 days

Adjusted conversion price per share

'

'

'

'

'

'

'

'

'

'

'

'

'

'

¥ 802.6

Preferred_Stock_Number_Of_Shar

Preferred Stock (Number Of Shares Of Preferred Stock Issued And Outstanding) (Detail) (Preferred Stock [Member])	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Class of Stock [Line Items]	'	'	'
Net change	'	'	'
Outstanding at end of fiscal year	156,001,000	156,001,000	156,001,000
Preferred Stock, Class 5 [Member]	'	'	'
Class of Stock [Line Items]	'	'	'
Net change	'	'	'
Outstanding at end of fiscal year	156,000,000	156,000,000	156,000,000
Preferred Stock, Class 11 [Member]	'	'	'
Class of Stock [Line Items]	'	'	'
Net change	'	'	'
Outstanding at end of fiscal year	1,000	1,000	1,000

Preferred_Stock_Aggregate_Liqu

Preferred Stock (Aggregate Liquidation Preference Of Preferred Stock Issued And Outstanding) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Class of Stock [Line Items]	'	'	'
Aggregate amount at end of fiscal year	¥ 390,001	¥ 390,001	'
Preferred Stock [Member]	'	'	'
Class of Stock [Line Items]	'	'	'
Net change	'	'	'
Aggregate amount at end of fiscal year	390,001	390,001	390,001
Preferred Stock [Member] | Preferred Stock, Class 5 [Member]	'	'	'
Class of Stock [Line Items]	'	'	'
Net change	'	'	'
Aggregate amount at end of fiscal year	390,000	390,000	390,000
Preferred Stock [Member] | Preferred Stock, Class 11 [Member]	'	'	'
Class of Stock [Line Items]	'	'	'
Net change	'	'	'
Aggregate amount at end of fiscal year	¥ 1	¥ 1	¥ 1

Common_Stock_And_Capital_Surpl2

Common Stock And Capital Surplus (Narrative) (Detail) (Under The Company Law [Member], JPY ¥)	Mar. 31, 2014
In Millions, unless otherwise specified
Minimum [Member]	'
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	50.00%
Percentage of outstanding common stock issued as free share distribution prior to April 1, 1991	5.00%
Maximum [Member]	'
Common Stock and Capital Surplus Disclosure [Line Items]	'
Percentage of outstanding common stock issued as free share distribution prior to April 1, 1991	10.00%
BTMU And MUTB [Member] | Common Stock [Member]	'
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 United States accounting practice for issuance of free shares distribution made prior to April 1, 1991	1,910,106
BTMU And MUTB [Member] | Unappropriated Retained Earnings [Member]	'
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 United States accounting practice for issuance of free shares distribution made prior to April 1, 1991	-1,910,106

Common_Stock_And_Capital_Surpl3

Common Stock And Capital Surplus (Changes In Number Of Issued Shares Of Common Stock) (Detail) (Common Stock [Member])	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Common Stock [Member]	'	'	'
Common Stock and Capital Surplus Disclosure [Line Items]	'	'	'
Balance at beginning of fiscal year	14,158,585,720	14,154,534,220	14,150,894,620
Issuance of new shares of common stock by way of exercise of the stock acquisition rights	5,440,700	4,051,500	3,639,600
Balance at end of fiscal year	14,164,026,420	14,158,585,720	14,154,534,220

Retained_Earnings_Legal_Reserv1

Retained Earnings, Legal Reserve And Dividends (Narrative) (Detail) (JPY ¥)	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Oct. 01, 2005	Apr. 02, 2001
			Under The Company Law [Member]	Under The Company Law [Member]	Under The Banking Law [Member]	Under The Banking Law [Member]	Under The Code And Japanese GAAP [Member]	Under The Code And Japanese GAAP [Member]	Under The Code And Japanese GAAP [Member]
			Minimum [Member]	Maximum [Member]	Minimum [Member]	Maximum [Member]
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	'	'	10.00%	'	20.00%	'	'	'	'
Percentage of aggregate amount of legal reserve set aside as an appropriation of retained earnings and the legal capital surplus over stated capital	'	'	'	25.00%	'	100.00%	'	'	'
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	'	'	'	25.00%	'	100.00%	'	'	'
Common stock issued, Value	¥ 1,647,145,000,000	¥ 1,646,035,000,000	'	'	'	'	'	'	¥ 924,400,000,000
Preferred stock issued, Value	442,100,000,000	442,100,000,000	'	'	'	'	'	'	222,100,000,000
Legal capital surplus	6,363,413,000,000	6,348,133,000,000	'	'	'	'	'	3,577,570,000,000	2,838,693,000,000
Common stock and preferred stock issued, Value	'	'	'	'	'	'	'	1,383,052,000,000	'
Retained earnings	'	'	'	'	'	'	'	757,458,000,000	'
MUFG's amount available for dividends	'	'	'	'	'	'	¥ 4,402,718,000,000	'	'

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income (Loss) (Changes In Accumulated OCI, Net Of Tax And Net Of Noncontrolling Interests) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Accumulated other comprehensive income (loss), net of taxes:	'	'	'
Net unrealized gains on investment securities: Balance at beginning of fiscal year	¥ 1,106,316	¥ 482,434	¥ 308,071
Net unrealized gains on investment securities: Net change during the fiscal year	166,407	623,882	174,363
Net unrealized gains on investment securities: Balance at end of fiscal year	1,272,723	1,106,316	482,434
Net unrealized gains (losses) on derivatives qualifying for cash flow hedges: Balance at beginning of fiscal year	2,170	-1,253	-1,690
Net unrealized gains (losses) on derivatives qualifying for cash flow hedges: Net change during the fiscal year	-361	3,423	437
Net unrealized gains (losses) on derivatives qualifying for cash flow hedges: Balance at end of fiscal year	1,809	2,170	-1,253
Defined benefit plans: Balance at beginning of fiscal year	-322,537	-401,923	-307,711
Defined benefit plans: Net change during the fiscal year	116,201	79,386	-94,212
Defined benefit plans: Balance at end of fiscal year	-206,336	-322,537	-401,923
Foreign currency translation adjustments: Balance at beginning of fiscal year	-211,602	-675,658	-627,331
Foreign currency translation adjustments: Net change during the fiscal year	501,088	464,056	-48,327
Foreign currency translation adjustments: Balance at end of fiscal year	289,486	-211,602	-675,658
Accumulated other comprehensive income (loss), net of taxes: Balance at end of fiscal year	¥ 1,357,682	¥ 574,347	¥ (596,400)

Accumulated_Other_Comprehensiv3

Accumulated Other Comprehensive Income (Loss) (Before Tax And Net Of Tax Changes In Each Component Of Accumulated OCI) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2012
Net unrealized gains (losses) on investment securities, Before tax:	'		'		'
Net unrealized gains on investment securities	¥ 453,494		¥ 1,108,665		¥ 296,347
Reclassification adjustment for gains included in net income before attribution of noncontrolling interests	-215,553		-143,664		-4,511
Net change	237,941		965,001		291,836
Net unrealized gains (losses) on investment securities, Tax (expense) or benefit:	'		'		'
Net unrealized gains on investment securities	-178,200		-390,387		-118,638
Reclassification adjustment for gains included in net income before attribution of noncontrolling interests	81,778		53,856		1,641
Net change	-96,422		-336,531		-116,997
Net unrealized gains (losses) on investment securities, Net of tax:	'		'		'
Net unrealized gains on investment securities	275,294		718,278		177,709
Reclassification adjustment for gains included in net income before attribution of noncontrolling interests	-133,775		-89,808		-2,870
Net change	141,519	[1]	628,470	[1]	174,839	[1]
Net unrealized gains (losses) on investment securities attributable to noncontrolling interests	-24,888		4,588		476
Net unrealized gains on investment securities attributable to Mitsubishi UFJ Financial Group	166,407		623,882		174,363
Net unrealized gains (losses) on derivatives qualifying for cash flow hedges, Before tax:	'		'		'
Net unrealized gains (losses) on derivatives qualifying for cash flow hedges	3,615		6,850		-178
Reclassification adjustment for losses (gains) included in net income before attribution of noncontrolling interests	-4,211		-1,210		850
Net change	-596		5,640		672
Net unrealized gains (losses) on derivatives qualifying for cash flow hedges, Tax (expense) or benefit:	'		'		'
Net unrealized gains (losses) on derivatives qualifying for cash flow hedges	-1,419		-2,693		99
Reclassification adjustment for losses (gains) included in net income before attribution of noncontrolling interests	1,654		476		-334
Net change	235		-2,217		-235
Net unrealized gains (losses) on derivatives qualifying for cash flow hedges, Net of tax:	'		'		'
Net unrealized gains (losses) on derivatives qualifying for cash flow hedges	2,196		4,157		-79
Reclassification adjustment for losses (gains) included in net income before attribution of noncontrolling interests	-2,557		-734		516
Net change	-361		3,423		437
Net unrealized gains on derivatives qualifying for cash flow hedges attributable to noncontrolling interests	'		'		'
Net unrealized gains (losses) on derivatives qualifying for cash flow hedges attributable to Mitsubishi UFJ Financial Group	-361		3,423		437
Defined benefit plans, Before tax:	'		'		'
Defined benefit plans	122,644		81,568		-189,916
Reclassification adjustment for losses included in net income before attribution of noncontrolling interests	64,519		41,642		29,128
Net change	187,163		123,210		-160,788
Defined benefit plans, Tax (expense) or benefit:	'		'		'
Defined benefit plans	-45,709		-27,506		77,992
Reclassification adjustment for losses included in net income before attribution of noncontrolling interests	-23,806		-15,707		-11,419
Net change	-69,515		-43,213		66,573
Defined benefit plans, Net of tax:	'		'		'
Defined benefit plans	76,935		54,062		-111,924
Reclassification adjustment for losses included in net income before attribution of noncontrolling interests	40,713		25,935		17,709
Net change	117,648		79,997		-94,215
Defined benefit plans attributable to noncontrolling interests	1,447		611		-3
Defined benefit plans attributable to Mitsubishi UFJ Financial Group	116,201		79,386		-94,212
Foreign currency translation adjustments, Before tax:	'		'		'
Foreign currency translation adjustments	557,941		437,485		-68,269
Reclassification adjustment for losses included in net income before attribution of noncontrolling interests	1,603		48,311		31,956
Net change	559,544		485,796		-36,313
Foreign currency translation adjustments, Tax (expense) or benefit:	'		'		'
Foreign currency translation adjustments	-50,516		406		-1,528
Reclassification adjustment for losses included in net income before attribution of noncontrolling interests	-898		-18,943		-11,702
Net change	-51,414		-18,537		-13,230
Foreign currency translation adjustments, Net of tax:	'		'		'
Foreign currency translation adjustments	507,425		437,891		-69,797
Reclassification adjustment for losses included in net income before attribution of noncontrolling interests	705		29,368		20,254
Net change	508,130		467,259		-49,543
Foreign currency translation adjustments attributable to noncontrolling interests	7,042		3,203		-1,216
Foreign currency translation adjustments attributable to Mitsubishi UFJ Financial Group	501,088		464,056		-48,327
Other comprehensive income attributable to Mitsubishi UFJ Financial Group	¥ 783,335		¥ 1,170,747		¥ 32,261
[1]	Includes unrealized gains of ¥1,234 million, ¥555 million and ¥183 million, net of tax, related to debt securities with credit component realized in earnings for the fiscal years ended March 31, 2012, 2013 and 2014, respectively.

Accumulated_Other_Comprehensiv4

Accumulated Other Comprehensive Income (Loss) (Reclassification Of Significant Items Out Of Accumulated OCI) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2012
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'		'		'
Investment securities gains-net	¥ (303,520)	[1]	¥ (155,957)	[1]	¥ (19,384)	[1]
Interest income on Loans, including fees	-1,663,742		-1,577,770		-1,595,097
Other non-interest expenses	317,939		369,497		307,582
Income before income tax expense	-1,420,443		-1,415,871		-849,942
Income tax expense	337,917		296,020		429,191
Net of tax	-1,082,526		-1,119,851		-420,751
Reclassification out of Accumulated Other Comprehensive Income [Member]	'		'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'		'		'
Income before income tax expense	-153,642		'		'
Income tax expense	58,728		'		'
Net of tax	-94,914		'		'
Reclassification out of Accumulated Other Comprehensive Income [Member] | Net Unrealized Losses (Gains) On Investment Securities [Member]	'		'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'		'		'
Other	-25		'		'
Income before income tax expense	-215,553		'		'
Income tax expense	81,778		'		'
Net of tax	-133,775		'		'
Reclassification out of Accumulated Other Comprehensive Income [Member] | Net Unrealized Losses (Gains) On Investment Securities [Member] | Net Gains On Sales And Redemptions Of Securities Available-For-Sale [Member]	'		'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'		'		'
Investment securities gains-net	-218,150		'		'
Reclassification out of Accumulated Other Comprehensive Income [Member] | Net Unrealized Losses (Gains) On Investment Securities [Member] | Impairment Losses On Investment Securities [Member]	'		'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'		'		'
Investment securities gains-net	2,622		'		'
Reclassification out of Accumulated Other Comprehensive Income [Member] | Net Unrealized Losses (Gains) On Derivatives Qualifying For Cash Flow Hedges [Member]	'		'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'		'		'
Other	78		'		'
Income before income tax expense	-4,211		'		'
Income tax expense	1,654		'		'
Net of tax	-2,557		'		'
Reclassification out of Accumulated Other Comprehensive Income [Member] | Net Unrealized Losses (Gains) On Derivatives Qualifying For Cash Flow Hedges [Member] | Interest Rate Contracts [Member]	'		'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'		'		'
Interest income on Loans, including fees	-4,289		'		'
Reclassification out of Accumulated Other Comprehensive Income [Member] | Defined Benefit Plans [Member]	'		'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'		'		'
Net actuarial loss	34,525	[2]	'		'
Prior service cost	-11,705	[2]	'		'
Loss on settlements and curtailment, and other	41,699	[2]	'		'
Income before income tax expense	64,519		'		'
Income tax expense	-23,806		'		'
Net of tax	40,713		'		'
Reclassification out of Accumulated Other Comprehensive Income [Member] | Foreign Currency Translation Adjustments [Member]	'		'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'		'		'
Other non-interest expenses	1,603		'		'
Income before income tax expense	1,603		'		'
Income tax expense	-898		'		'
Net of tax	¥ 705		'		'
[1]	The following credit losses are included in Investment securities gains-net: Decline in fair value by ¥11,704 million, ¥7,457 million and ¥2,321 million; Other comprehensive income-net by ¥2,078 million, ¥872 million and ¥284 million; Total credit losses by ¥13,782 million, ¥8,329 million and ¥2,605 million, March 31, 2012, 2013 and 2014, respectively.
[2]	These Accumulated OCI components are included in the computation of net periodic benefit cost. See Note 13 for more information.

Noncontrolling_Interests_Narra

Noncontrolling Interests (Narrative) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Deconsolidation of subsidiaries:	'	'	'
Net gain (loss) recognized due to deconsolidation of subsidiaries	¥ 3,142	¥ (17,585)	¥ (9,492)

Noncontrolling_Interests_Effec

Noncontrolling Interests (Effect On MUFG's Shareholders' Equity From Changes In Ownership Of Subsidiaries) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]	'	'	'
Net income attributable to Mitsubishi UFJ Financial Group	¥ 1,015,393	¥ 1,069,124	¥ 416,231
Mitsubishi UFJ Financial Group Shareholders' Equity [Member]	'	'	'
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]	'	'	'
Net income attributable to Mitsubishi UFJ Financial Group	1,015,393	1,069,124	416,231
Transactions between Mitsubishi UFJ Financial Group and the noncontrolling interest shareholders:	'	'	'
Issuance of new shares of Mitsubishi UFJ Morgan Stanley Securities Co., Ltd. (Note 2)	'	'	-20,000
Purchase of shares of Mitsubishi UFJ Merrill Lynch PB Securities Co., Ltd. from noncontrolling interest shareholders (Note 2)	'	-30,655	'
Reorganization of Mitsubishi UFJ Morgan Stanley PB Securities Co., Ltd. (Note 2)	13,839	'	'
Other	204	-412	759
Net transfers from (to) the noncontrolling interest shareholders	14,043	-31,067	-19,241
Change from net income attributable to Mitsubishi UFJ Financial Group and transactions between Mitsubishi UFJ Financial Group and the noncontrolling interest shareholders	¥ 1,029,436	¥ 1,038,057	¥ 396,990

Regulatory_Capital_Requirement2

Regulatory Capital Requirements (Narrative) (Detail) (JPY ¥)

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

In Millions, unless otherwise specified

Under the Guidelines Applicable to Japanese Banking Institutions With International Operations Conducted by Foreign Offices From March 31, 2013 Until March 30, 2014 [Member]

Under the Guidelines Applicable to Japanese Banking Institutions With International Operations Conducted by Foreign Offices From March 31, 2014 Until March 30, 2015 [Member]

Under Basel III [Member]

MUMSS And Other Securities Subsidiaries [Member]

Stand-Alone, MUMSS [Member]

Stand-Alone, MUMSS [Member]

Stand-Alone, MUMSS [Member]

MUMSS [Member]

MUAH [Member]

MUAH [Member]

MUAH [Member]

MUAH [Member]

MUB [Member]

MUB [Member]

Under Basel III [Member]

Under Basel III [Member]

Under Basel III [Member]

Under Basel III [Member]

Under Basel III [Member]

Under Basel III [Member]

Under Basel III [Member]

Minimum [Member]

Previously Reported [Member]

Previously Reported [Member]

Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common Equity Tier I capital to risk-weighted assets, Ratio required for capital adequacy purposes

3.50%

4.00%

'

'

'

'

'

'

'

'

'

'

'

'

Tier I capital to risk-weighted assets, Ratio required for capital adequacy purposes

4.50%

5.50%

'

'

'

'

'

'

4.00%

4.00%

'

'

4.00%

4.00%

Total Capital, Ratio required for capital adequacy purposes

8.00%

8.00%

'

'

'

'

'

'

8.00%

8.00%

'

'

8.00%

8.00%

Risk weighted threshold of items not deducted from Common Equity Tier I capital

'

'

250.00%

'

'

'

'

'

'

'

'

'

'

'

Tier II capital factor, percentage of the unrealized gains on investment securities available-for-sale

'

'

45.00%

'

'

'

'

'

'

'

'

'

'

'

Tier II capital factor, percentage of the land revaluation excess

'

'

45.00%

'

'

'

'

'

'

'

'

'

'

'

Capital ratio required for financial Instruments firms to maintain by Financial Instruments and Exchange Law and related ordinance

'

'

'

120.00%

'

'

'

'

'

'

'

'

'

'

Capital ratio requirement for financial instruments firms which will call for regulatory reporting

'

'

'

140.00%

'

'

'

'

'

'

'

'

'

'

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

'

'

'

100.00%

'

'

'

'

'

'

'

'

'

'

Amount of capital accounts less certain fixed assets

'

'

'

'

¥ 377,325

¥ 388,163

'

¥ 400,570

'

'

'

'

'

'

Percentage of capital accounts to the total amounts equivalent to market, counterparty credit and operations risks

'

'

'

'

292.90%

315.90%

315.80%

295.00%

'

'

'

'

'

'

Tier I capital (to risk-weighted assets): Actual ratio

'

'

'

'

'

'

'

'

12.41%

11.91%

11.91%

12.44%

12.94%

11.68%

Total capital (to risk-weighted assets): Actual ratio

'

'

'

'

'

'

'

'

14.61%

13.34%

13.34%

13.93%

14.91%

13.17%

Minimum total risk based capital ratio to be categorized as "well capitalized"

'

'

'

'

'

'

'

'

'

'

'

'

10.00%

10.00%

Tier I risk-based capital ratio to be categorized as "well capitalized"

'

'

'

'

'

'

'

'

'

'

'

'

6.00%

6.00%

Tier I leverage ratio to be categorized as "well capitalized"

'

'

'

'

'

'

'

'

'

'

'

'

5.00%

[1]

5.00%

[1]

[1]

Excludes certain intangible assets.

Regulatory_Capital_Requirement3

Regulatory Capital Requirements (Risk-Adjusted Capital Amounts And Ratios, Japan) (Detail) (JPY ¥)	Mar. 31, 2014	Mar. 31, 2013
In Millions, unless otherwise specified
Stand-Alone, BTMU [Member]	'	'
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'	'
Total capital (to risk-weighted assets): Actual amount	¥ 11,582,199	¥ 11,501,001
Total capital (to risk-weighted assets): Actual ratio	17.52%	18.52%
Tier I capital (to risk-weighted assets): Actual amount	9,087,335	8,685,464
Tier I capital (to risk-weighted assets): Actual ratio	13.74%	13.99%
Common Equity Tier I capital (to risk-weighted assets): Actual amount	7,854,651	7,301,380
Common Equity Tier I capital (to risk-weighted assets): Actual ratio	11.88%	11.76%
Total capital (to risk-weighted assets): Amount for capital adequacy purposes	5,287,273	4,966,322
Total capital (to risk-weighted assets): Ratio for capital adequacy purposes	8.00%	8.00%
Tier I capital (to risk-weighted assets): Amount for capital adequacy purposes	3,635,000	2,793,556
Tier I capital (to risk-weighted assets): Ratio for capital adequacy purposes	5.50%	4.50%
Common Equity Tier I capital (to risk-weighted assets): Amount for capital adequacy purposes	2,643,636	2,172,766
Common Equity Tier I capital (to risk-weighted assets): Ratio for capital adequacy purposes	4.00%	3.50%
Stand-Alone, MUTB [Member]	'	'
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'	'
Total capital (to risk-weighted assets): Actual amount	2,068,948	2,039,037
Total capital (to risk-weighted assets): Actual ratio	18.51%	17.94%
Tier I capital (to risk-weighted assets): Actual amount	1,606,684	1,502,425
Tier I capital (to risk-weighted assets): Actual ratio	14.37%	13.22%
Common Equity Tier I capital (to risk-weighted assets): Actual amount	1,533,733	1,419,797
Common Equity Tier I capital (to risk-weighted assets): Actual ratio	13.72%	12.49%
Total capital (to risk-weighted assets): Amount for capital adequacy purposes	893,909	908,852
Total capital (to risk-weighted assets): Ratio for capital adequacy purposes	8.00%	8.00%
Tier I capital (to risk-weighted assets): Amount for capital adequacy purposes	614,563	511,229
Tier I capital (to risk-weighted assets): Ratio for capital adequacy purposes	5.50%	4.50%
Common Equity Tier I capital (to risk-weighted assets): Amount for capital adequacy purposes	446,955	397,623
Common Equity Tier I capital (to risk-weighted assets): Ratio for capital adequacy purposes	4.00%	3.50%
Consolidated, MUFG [Member]	'	'
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'	'
Total capital (to risk-weighted assets): Actual amount	15,394,342	14,673,951
Total capital (to risk-weighted assets): Actual ratio	15.53%	16.68%
Tier I capital (to risk-weighted assets): Actual amount	12,341,870	11,214,815
Tier I capital (to risk-weighted assets): Actual ratio	12.45%	12.74%
Common Equity Tier I capital (to risk-weighted assets): Actual amount	11,153,032	10,300,558
Common Equity Tier I capital (to risk-weighted assets): Actual ratio	11.25%	11.70%
Total capital (to risk-weighted assets): Amount for capital adequacy purposes	7,926,746	7,037,491
Total capital (to risk-weighted assets): Ratio for capital adequacy purposes	8.00%	8.00%
Tier I capital (to risk-weighted assets): Amount for capital adequacy purposes	5,449,638	3,958,589
Tier I capital (to risk-weighted assets): Ratio for capital adequacy purposes	5.50%	4.50%
Common Equity Tier I capital (to risk-weighted assets): Amount for capital adequacy purposes	3,963,373	3,078,902
Common Equity Tier I capital (to risk-weighted assets): Ratio for capital adequacy purposes	4.00%	3.50%
Consolidated, BTMU [Member]	'	'
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'	'
Total capital (to risk-weighted assets): Actual amount	12,256,176	12,034,152
Total capital (to risk-weighted assets): Actual ratio	15.57%	17.51%
Tier I capital (to risk-weighted assets): Actual amount	9,611,553	9,015,774
Tier I capital (to risk-weighted assets): Actual ratio	12.21%	13.11%
Common Equity Tier I capital (to risk-weighted assets): Actual amount	8,696,589	8,052,750
Common Equity Tier I capital (to risk-weighted assets): Actual ratio	11.05%	11.71%
Total capital (to risk-weighted assets): Amount for capital adequacy purposes	6,294,248	5,497,550
Total capital (to risk-weighted assets): Ratio for capital adequacy purposes	8.00%	8.00%
Tier I capital (to risk-weighted assets): Amount for capital adequacy purposes	4,327,295	3,092,372
Tier I capital (to risk-weighted assets): Ratio for capital adequacy purposes	5.50%	4.50%
Common Equity Tier I capital (to risk-weighted assets): Amount for capital adequacy purposes	3,147,124	2,405,178
Common Equity Tier I capital (to risk-weighted assets): Ratio for capital adequacy purposes	4.00%	3.50%
Consolidated, MUTB [Member]	'	'
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'	'
Total capital (to risk-weighted assets): Actual amount	2,057,338	2,035,576
Total capital (to risk-weighted assets): Actual ratio	18.38%	17.79%
Tier I capital (to risk-weighted assets): Actual amount	1,652,410	1,575,140
Tier I capital (to risk-weighted assets): Actual ratio	14.76%	13.77%
Common Equity Tier I capital (to risk-weighted assets): Actual amount	1,590,690	1,500,578
Common Equity Tier I capital (to risk-weighted assets): Actual ratio	14.21%	13.12%
Total capital (to risk-weighted assets): Amount for capital adequacy purposes	895,051	914,984
Total capital (to risk-weighted assets): Ratio for capital adequacy purposes	8.00%	8.00%
Tier I capital (to risk-weighted assets): Amount for capital adequacy purposes	615,347	514,678
Tier I capital (to risk-weighted assets): Ratio for capital adequacy purposes	5.50%	4.50%
Common Equity Tier I capital (to risk-weighted assets): Amount for capital adequacy purposes	¥ 447,525	¥ 400,305
Common Equity Tier I capital (to risk-weighted assets): Ratio for capital adequacy purposes	4.00%	3.50%

Regulatory_Capital_Requirement4

Regulatory Capital Requirements (Risk-Adjusted Capital Amounts And Ratios, United States Of America) (Detail) (USD $)	Dec. 31, 2013		Dec. 31, 2012
In Millions, unless otherwise specified
MUB [Member]	'		'
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'		'
Total capital (to risk-weighted assets): Actual amount	$12,990		$10,362
Tier I capital (to risk-weighted assets): Actual amount	11,274		9,192
Tier I capital (to quarterly average assets): Actual amount	11,274	[1]	9,162	[1]
Total capital (to risk-weighted assets): Amount for capital adequacy purposes	6,970		6,294
Tier I capital (to risk-weighted assets): Amount for capital adequacy purposes	3,485		3,147
Tier I capital (to quarterly average assets): Amount for capital adequacy purposes	4,051	[1]	3,498	[1]
Total capital (to risk-weighted assets): Actual ratio	14.91%		13.17%
Tier I capital (to risk-weighted assets): Actual ratio	12.94%		11.68%
Tier I capital (to quarterly average assets): Actual ratio	11.13%	[1]	10.51%	[1]
Total capital (to risk-weighted assets): Ratio for capital adequacy purposes	8.00%		8.00%
Tier I capital (to risk-weighted assets): Ratio for capital adequacy purposes	4.00%		4.00%
Tier I capital (to quarterly average assets): Ratio for capital adequacy purposes	4.00%	[1]	4.00%	[1]
Total capital (to risk-weighted assets): Amount required to be "well capitalized"	8,713		7,867
Tier I capital (to risk-weighted assets): Amount required to be "well capitalized"	5,228		4,720
Tier I capital (to quarterly average assets): Amount required to be "well capitalized"	5,063	[1]	4,373	[1]
Total capital (to risk-weighted assets): Ratio OCC requires to be "well capitalized"	10.00%		10.00%
Tier I capital (to risk-weighted assets): Ratio OCC required to be "well capitalized"	6.00%		6.00%
Tier I capital (to quarterly average assets): Ratio OCC required to be "well capitalized"	5.00%	[1]	5.00%	[1]
MUAH [Member]	'		'
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'		'
Total capital (to risk-weighted assets): Actual amount	13,499		11,048
Tier I capital (to risk-weighted assets): Actual amount	11,471		9,864
Tier I capital (to quarterly average assets): Actual amount	11,471	[1]	9,864	[1]
Total capital (to risk-weighted assets): Amount for capital adequacy purposes	7,393		6,628
Tier I capital (to risk-weighted assets): Amount for capital adequacy purposes	3,696		3,314
Tier I capital (to quarterly average assets): Amount for capital adequacy purposes	$4,073	[1]	$3,531	[1]
Total capital (to risk-weighted assets): Actual ratio	14.61%		13.34%
Tier I capital (to risk-weighted assets): Actual ratio	12.41%		11.91%
Tier I capital (to quarterly average assets): Actual ratio	11.27%	[1]	11.18%	[1]
Total capital (to risk-weighted assets): Ratio for capital adequacy purposes	8.00%		8.00%
Tier I capital (to risk-weighted assets): Ratio for capital adequacy purposes	4.00%		4.00%
Tier I capital (to quarterly average assets): Ratio for capital adequacy purposes	4.00%	[1]	4.00%	[1]
[1]	Excludes certain intangible assets.

Earnings_Per_Common_Share_Appl2

Earnings Per Common Share Applicable To Common Shareholders Of MUFG (Narrative) (Detail) (JPY ¥)	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2012	Mar. 31, 2012
In Millions, except Per Share data, unless otherwise specified	Preferred Stock [Member]	Preferred Stock [Member]	Preferred Stock [Member]	Morgan Stanley [Member]	Morgan Stanley [Member]
	Preferred Stock, Class 11 [Member]	Preferred Stock, Class 11 [Member]	Preferred Stock, Class 11 [Member]	Stock Options [Member]	Restricted Stock Units [Member]
Earnings Per Common Share [Line Items]	'	'	'	'	'
Antidilutive securities excluded from computation of diluted earnings per common share issued, in share	'	'	'	57	21
Conversion price	¥ 865.9	¥ 865.9	¥ 865.9	'	'

Earnings_Per_Common_Share_Appl3

Earnings Per Common Share Applicable To Common Shareholders Of MUFG (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) (Detail) (JPY ¥)	12 Months Ended
In Millions, except Share data in Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Income (Numerator):	'	'	'
Net income attributable to Mitsubishi UFJ Financial Group	¥ 1,015,393	¥ 1,069,124	¥ 416,231
Income allocable to preferred shareholders:	'	'	'
Cash dividends paid	-17,940	-17,940	-17,940
Changes in a foreign affiliated company's interests in its subsidiary	-3,301	'	'
Earnings applicable to common shareholders of Mitsubishi UFJ Financial Group	994,152	1,051,184	398,291
Effect of dilutive instruments:	'	'	'
Stock options and restricted stock units-Morgan Stanley	-1,875	-336	'
Convertible preferred stock-Mitsubishi UFJ Merrill Lynch PB Securities Co., Ltd.	'	'	-589
Earnings applicable to common shareholders of Mitsubishi UFJ Financial Group and assumed conversions	¥ 992,277	¥ 1,050,848	¥ 397,702
Shares (Denominator):	'	'	'
Weighted average common shares outstanding	14,158,698	14,148,060	14,140,136
Effect of dilutive instruments:	'	'	'
Convertible preferred stock	1	1	1
Stock options	21,381	21,019	16,683
Weighted average common shares for diluted computation	14,180,080	14,169,080	14,156,820
Basic earnings per common share:	'	'	'
Earnings applicable to common shareholders of Mitsubishi UFJ Financial Group	¥ 70.21	¥ 74.3	¥ 28.17
Diluted earnings per common share:	'	'	'
Earnings applicable to common shareholders of Mitsubishi UFJ Financial Group	¥ 69.98	¥ 74.16	¥ 28.09

Derivative_Financial_Instrumen2

Derivative Financial Instruments (Narrative) (Detail) (JPY ¥)	Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2014		Mar. 31, 2013		Dec. 31, 2013	Dec. 31, 2013
					Credit Derivatives [Member]		Credit Derivatives [Member]		MUAH [Member]	MUAH [Member]
									Cash Flow Hedging [Member]	Cash Flow Hedging [Member]
										Interest Rate Swap1 [Member]
General Cash Flow Hedge Information:	'		'		'		'		'	'
Weighted average remaining life of currently active cash flow hedges, approximate years	'		'		'		'		'4 years 7 days	'
Derivative, Notional Amount	¥ 1,147,400,000,000,000	[1]	¥ 1,125,500,000,000,000	[1]	¥ 7,100,000,000,000	[1]	¥ 6,600,000,000,000	[1]	'	¥ 453,200,000,000
Derivative, Description of hedged item	'		'		'		'		'	'Benchmark interest rate on LIBOR indexed loans
Expected cash flow hedge gain (loss) reclassified to earnings, net	'		'		'		'		'	6,700,000,000
Credit Derivatives:	'		'		'		'		'	'
Carrying value of credit protection, offsetting with purchased protection with identical underlying referenced entities	'		'		35,000,000,000		3,000,000,000		'	'
Notional amounts of credit protection, offsetting with purchased protection with identical underlying referenced entities	'		'		3,048,000,000,000		2,779,000,000,000		'	'
Derivative, Credit Risk Related Contingent Features:	'		'		'		'		'	'
Aggregate fair value of derivative instruments with credit risk related contingent features in a liability position	'		'		2,500,000,000,000		3,600,000,000,000		'	'
Aggregate fair value of derivative instruments with credit risk related contingent features in a liability position, posted collateral	'		'		253,000,000,000		579,000,000,000		'	'
Additional collateral amount which could be requested if the MUFG Group's debt falls below investment grade	'		'		125,000,000,000		116,000,000,000		'	'
Early termination amount which could be requested if the MUFG Group's debt falls below investment grade	'		'		¥ 43,000,000,000		¥ 23,000,000,000		'	'
[1]	Includes both written and purchased position.

Derivative_Financial_Instrumen3

Derivative Financial Instruments (Notional Amounts Of Derivative Contracts) (Detail) (JPY ¥)	Mar. 31, 2014		Mar. 31, 2013
In Billions, unless otherwise specified
Derivative [Line Items]	'		'
Notional amounts of derivatives	¥ 1,147,400	[1]	¥ 1,125,500	[1]
Interest Rate Contracts [Member]	'		'
Derivative [Line Items]	'		'
Notional amounts of derivatives	962,500	[1]	956,600	[1]
Foreign Exchange Contracts [Member]	'		'
Derivative [Line Items]	'		'
Notional amounts of derivatives	169,500	[1]	155,200	[1]
Equity Contracts [Member]	'		'
Derivative [Line Items]	'		'
Notional amounts of derivatives	3,100	[1]	3,000	[1]
Commodity Contracts [Member]	'		'
Derivative [Line Items]	'		'
Notional amounts of derivatives	2,500	[1]	2,200	[1]
Credit Derivatives [Member]	'		'
Derivative [Line Items]	'		'
Notional amounts of derivatives	7,100	[1]	6,600	[1]
Others [Member]	'		'
Derivative [Line Items]	'		'
Notional amounts of derivatives	¥ 2,700	[1]	¥ 1,900	[1]
[1]	Includes both written and purchased position.

Derivative_Financial_Instrumen4

Derivative Financial Instruments (Fair Value Information On Derivative Instruments Recorded On Consolidated Balance Sheet) (Detail) (JPY ¥)	Mar. 31, 2014		Mar. 31, 2013
In Billions, unless otherwise specified
Derivative [Line Items]	'		'
Fair value of derivative assets	¥ 11,810	[1],[2],[3]	¥ 14,648	[1],[2],[3]
Fair value of derivative liabilities	11,765	[1],[2],[3]	14,867	[1],[2],[3]
Interest Rate Contracts [Member]	'		'
Derivative [Line Items]	'		'
Fair value of derivative assets	8,617	[1],[2],[3]	11,216	[1],[2],[3]
Fair value of derivative liabilities	8,523	[1],[2],[3]	11,205	[1],[2],[3]
Foreign Exchange Contracts [Member]	'		'
Derivative [Line Items]	'		'
Fair value of derivative assets	2,916	[1],[2],[3]	3,193	[1],[2],[3]
Fair value of derivative liabilities	2,999	[1],[2],[3]	3,429	[1],[2],[3]
Equity Contracts [Member]	'		'
Derivative [Line Items]	'		'
Fair value of derivative assets	149	[1],[2],[3]	104	[1],[2],[3]
Fair value of derivative liabilities	144	[1],[2],[3]	131	[1],[2],[3]
Commodity Contracts [Member]	'		'
Derivative [Line Items]	'		'
Fair value of derivative assets	69	[1],[2],[3]	73	[1],[2],[3]
Fair value of derivative liabilities	60	[1],[2],[3]	64	[1],[2],[3]
Credit Derivatives [Member]	'		'
Derivative [Line Items]	'		'
Fair value of derivative assets	57	[1],[2],[3]	62	[1],[2],[3]
Fair value of derivative liabilities	62	[1],[2],[3]	62	[1],[2],[3]
Others [Member]	'		'
Derivative [Line Items]	'		'
Fair value of derivative assets	2	[1],[2],[3],[4]	'	[1],[2],[3],[4]
Fair value of derivative liabilities	-23	[1],[2],[3],[4]	-24	[1],[2],[3],[4]
Not Designated as Hedging Instrument [Member]	'		'
Derivative [Line Items]	'		'
Fair value of derivative assets	11,809	[1],[3],[5]	14,646	[1],[3],[5]
Fair value of derivative liabilities	11,764	[1],[3],[5]	14,867	[1],[3],[5]
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member]	'		'
Derivative [Line Items]	'		'
Fair value of derivative assets	8,616	[1],[3],[5]	11,214	[1],[3],[5]
Fair value of derivative liabilities	8,522	[1],[3],[5]	11,205	[1],[3],[5]
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contracts [Member]	'		'
Derivative [Line Items]	'		'
Fair value of derivative assets	2,916	[1],[3],[5]	3,193	[1],[3],[5]
Fair value of derivative liabilities	2,999	[1],[3],[5]	3,429	[1],[3],[5]
Not Designated as Hedging Instrument [Member] | Equity Contracts [Member]	'		'
Derivative [Line Items]	'		'
Fair value of derivative assets	149	[1],[3],[5]	104	[1],[3],[5]
Fair value of derivative liabilities	144	[1],[3],[5]	131	[1],[3],[5]
Not Designated as Hedging Instrument [Member] | Commodity Contracts [Member]	'		'
Derivative [Line Items]	'		'
Fair value of derivative assets	69	[1],[3],[5]	73	[1],[3],[5]
Fair value of derivative liabilities	60	[1],[3],[5]	64	[1],[3],[5]
Not Designated as Hedging Instrument [Member] | Credit Derivatives [Member]	'		'
Derivative [Line Items]	'		'
Fair value of derivative assets	57	[1],[3],[5]	62	[1],[3],[5]
Fair value of derivative liabilities	62	[1],[3],[5]	62	[1],[3],[5]
Not Designated as Hedging Instrument [Member] | Others [Member]	'		'
Derivative [Line Items]	'		'
Fair value of derivative assets	2	[1],[3],[4],[5]	'	[1],[3],[4],[5]
Fair value of derivative liabilities	-23	[1],[3],[4],[5]	-24	[1],[3],[4],[5]
Designated as Hedging Instrument [Member]	'		'
Derivative [Line Items]	'		'
Fair value of derivative assets	1	[1],[3],[6]	2	[1],[3],[6]
Fair value of derivative liabilities	1	[1],[3],[6]	'	[1],[3],[6]
Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member]	'		'
Derivative [Line Items]	'		'
Fair value of derivative assets	1	[1],[3],[6]	2	[1],[3],[6]
Fair value of derivative liabilities	1	[1],[3],[6]	'	[1],[3],[6]
Designated as Hedging Instrument [Member] | Foreign Exchange Contracts [Member]	'		'
Derivative [Line Items]	'		'
Fair value of derivative assets	'	[1],[3],[6]	'	[1],[3],[6]
Fair value of derivative liabilities	'	[1],[3],[6]	'	[1],[3],[6]
Designated as Hedging Instrument [Member] | Equity Contracts [Member]	'		'
Derivative [Line Items]	'		'
Fair value of derivative assets	'	[1],[3],[6]	'	[1],[3],[6]
Fair value of derivative liabilities	'	[1],[3],[6]	'	[1],[3],[6]
Designated as Hedging Instrument [Member] | Commodity Contracts [Member]	'		'
Derivative [Line Items]	'		'
Fair value of derivative assets	'	[1],[3],[6]	'	[1],[3],[6]
Fair value of derivative liabilities	'	[1],[3],[6]	'	[1],[3],[6]
Designated as Hedging Instrument [Member] | Credit Derivatives [Member]	'		'
Derivative [Line Items]	'		'
Fair value of derivative assets	'	[1],[3],[6]	'	[1],[3],[6]
Fair value of derivative liabilities	'	[1],[3],[6]	'	[1],[3],[6]
Designated as Hedging Instrument [Member] | Others [Member]	'		'
Derivative [Line Items]	'		'
Fair value of derivative assets	'	[1],[3],[4],[6]	'	[1],[3],[4],[6]
Fair value of derivative liabilities	'	[1],[3],[4],[6]	'	[1],[3],[4],[6]
[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]	This table does not include contracts with embedded derivatives for which the fair value option has been elected.
[3]	For more information about fair value measurement and assumptions used to measure the fair value of derivatives, see Note 31.
[4]	Others include mainly bifurcated embedded derivatives carried at fair value, which are presented in Deposits and Long-term debt.
[5]	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 except for (6).
[6]	The MUFG Group adopts hedging strategies and applies hedge accounting to certain derivative transactions entered into by MUAH. The derivative instruments which are designated as hedging instruments are presented in Other assets or Other liabilities on the accompanying consolidated balance sheets.

Derivative_Financial_Instrumen5

Derivative Financial Instruments (Gains And Losses For Trading And Risk Management Derivatives (Not Designated As Hedging Instruments)) (Detail) (Not Designated as Hedging Instrument [Member], JPY ¥)	12 Months Ended
In Billions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gains and losses recognized for trading and risk management derivatives	¥ (137)	¥ (177)	¥ (17)
Interest Rate Contracts [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gains and losses recognized for trading and risk management derivatives	30	121	160
Foreign Exchange Contracts [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gains and losses recognized for trading and risk management derivatives	-51	-92	-94
Equity Contracts [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gains and losses recognized for trading and risk management derivatives	-105	-138	-47
Commodity Contracts [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gains and losses recognized for trading and risk management derivatives	3	4	-1
Credit Derivatives [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gains and losses recognized for trading and risk management derivatives	-6	-11	2
Others [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gains and losses recognized for trading and risk management derivatives	-8	-61	-37
Foreign Exchange Gains (Losses)-Net [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gains and losses recognized for trading and risk management derivatives	-53	-94	-95
Foreign Exchange Gains (Losses)-Net [Member] | Interest Rate Contracts [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gains and losses recognized for trading and risk management derivatives	'	'	'
Foreign Exchange Gains (Losses)-Net [Member] | Foreign Exchange Contracts [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gains and losses recognized for trading and risk management derivatives	-51	-92	-94
Foreign Exchange Gains (Losses)-Net [Member] | Equity Contracts [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gains and losses recognized for trading and risk management derivatives	'	'	'
Foreign Exchange Gains (Losses)-Net [Member] | Commodity Contracts [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gains and losses recognized for trading and risk management derivatives	'	'	'
Foreign Exchange Gains (Losses)-Net [Member] | Credit Derivatives [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gains and losses recognized for trading and risk management derivatives	'	'	'
Foreign Exchange Gains (Losses)-Net [Member] | Others [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gains and losses recognized for trading and risk management derivatives	-2	-2	-1
Trading Account Profits (Losses)-Net [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gains and losses recognized for trading and risk management derivatives	-84	-83	78
Trading Account Profits (Losses)-Net [Member] | Interest Rate Contracts [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gains and losses recognized for trading and risk management derivatives	30	121	160
Trading Account Profits (Losses)-Net [Member] | Foreign Exchange Contracts [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gains and losses recognized for trading and risk management derivatives	'	'	'
Trading Account Profits (Losses)-Net [Member] | Equity Contracts [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gains and losses recognized for trading and risk management derivatives	-105	-138	-47
Trading Account Profits (Losses)-Net [Member] | Commodity Contracts [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gains and losses recognized for trading and risk management derivatives	3	4	-1
Trading Account Profits (Losses)-Net [Member] | Credit Derivatives [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gains and losses recognized for trading and risk management derivatives	-6	-11	2
Trading Account Profits (Losses)-Net [Member] | Others [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gains and losses recognized for trading and risk management derivatives	¥ (6)	¥ (59)	¥ (36)

Derivative_Financial_Instrumen6

Derivative Financial Instruments (Gains And Losses For Derivatives Designated As Cash Flow Hedges) (Detail) (Designated as Hedging Instrument [Member], JPY ¥)	12 Months Ended
In Billions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2012
Derivative Instruments, Gain (Loss) [Line Items]	'		'		'
Gains (losses) recognized in Accumulated OCI on derivative instruments, Cash flow hedges (Effective portion)	¥ 3		¥ 7		'
Gains (Losses) reclassified from Accumulated OCI into income, Cash flow hedges (Effective portion)	4		1		-1
Gains (Losses) recognized in income on derivative instruments, Cash flow hedges (Ineffective portion and amount excluded from effectiveness testing)	'		'		'
Interest Rate Contracts [Member]	'		'		'
Derivative Instruments, Gain (Loss) [Line Items]	'		'		'
Gains (losses) recognized in Accumulated OCI on derivative instruments, Cash flow hedges (Effective portion)	3		7		'
Gains (Losses) reclassified from Accumulated OCI into income, Cash flow hedges (Effective portion)	4	[1]	1	[1]	-1	[1]
Gains (Losses) recognized in income on derivative instruments, Cash flow hedges (Ineffective portion and amount excluded from effectiveness testing)	'		'		'
[1]	Included in Interest income.

Derivative_Financial_Instrumen7

Derivative Financial Instruments (Protection Sold Through Credit Default Swaps And Credit-Linked Notes) (Detail) (JPY ¥)	Mar. 31, 2014		Mar. 31, 2013
In Millions, unless otherwise specified
Credit Derivatives [Line Items]	'		'
Maximum potential/Notional amount, Expiring in 1 year or less	¥ 43,709,000		¥ 107,425,000
Maximum potential/Notional amount, Expiring in 1-5 years	28,618,000		37,805,000
Maximum potential/Notional amount, Expiring over 5 years	10,580,000		10,143,000
Credit Default Swaps Sold [Member]	'		'
Credit Derivatives [Line Items]	'		'
Maximum potential/Notional amount, Expiring in 1 year or less	597,479		624,962
Maximum potential/Notional amount, Expiring in 1-5 years	2,619,297		2,387,304
Maximum potential/Notional amount, Expiring over 5 years	249,120		241,579
Maximum potential/Notional amount, Total	3,465,896		3,253,845
Credit derivative (asset) liability at fair value	-39,484	[1]	-3,130	[1]
Credit Default Swaps Sold [Member] | Single Name Credit Default Swaps [Member]	'		'
Credit Derivatives [Line Items]	'		'
Maximum potential/Notional amount, Expiring in 1 year or less	473,702		575,600
Maximum potential/Notional amount, Expiring in 1-5 years	2,136,941		1,943,959
Maximum potential/Notional amount, Expiring over 5 years	81,491		116,406
Maximum potential/Notional amount, Total	2,692,134		2,635,965
Credit derivative (asset) liability at fair value	-29,382	[1]	339	[1]
Credit Default Swaps Sold [Member] | Single Name Credit Default Swaps [Member] | Investment Grade [Member]	'		'
Credit Derivatives [Line Items]	'		'
Maximum potential/Notional amount, Expiring in 1 year or less	422,991	[2]	488,834	[2]
Maximum potential/Notional amount, Expiring in 1-5 years	1,952,552	[2]	1,775,720	[2]
Maximum potential/Notional amount, Expiring over 5 years	78,741	[2]	102,613	[2]
Maximum potential/Notional amount, Total	2,454,284	[2]	2,367,167	[2]
Credit derivative (asset) liability at fair value	-30,634	[1],[2]	-8,863	[1],[2]
Credit Default Swaps Sold [Member] | Single Name Credit Default Swaps [Member] | Non-Investment Grade [Member]	'		'
Credit Derivatives [Line Items]	'		'
Maximum potential/Notional amount, Expiring in 1 year or less	49,579		75,959
Maximum potential/Notional amount, Expiring in 1-5 years	180,168		164,215
Maximum potential/Notional amount, Expiring over 5 years	2,750		13,793
Maximum potential/Notional amount, Total	232,497		253,967
Credit derivative (asset) liability at fair value	1,326	[1]	9,275	[1]
Credit Default Swaps Sold [Member] | Single Name Credit Default Swaps [Member] | Not Rated [Member]	'		'
Credit Derivatives [Line Items]	'		'
Maximum potential/Notional amount, Expiring in 1 year or less	1,132		10,807
Maximum potential/Notional amount, Expiring in 1-5 years	4,221		4,024
Maximum potential/Notional amount, Expiring over 5 years	'		'
Maximum potential/Notional amount, Total	5,353		14,831
Credit derivative (asset) liability at fair value	-74	[1]	-73	[1]
Credit Default Swaps Sold [Member] | Index And Basket Credit Default Swaps Sold [Member]	'		'
Credit Derivatives [Line Items]	'		'
Maximum potential/Notional amount, Expiring in 1 year or less	123,777		49,362
Maximum potential/Notional amount, Expiring in 1-5 years	482,356		443,345
Maximum potential/Notional amount, Expiring over 5 years	167,629		125,173
Maximum potential/Notional amount, Total	773,762		617,880
Credit derivative (asset) liability at fair value	-10,102	[1]	-3,469	[1]
Credit Default Swaps Sold [Member] | Index And Basket Credit Default Swaps Sold [Member] | BTMU [Member]	'		'
Credit Derivatives [Line Items]	'		'
Maximum potential/Notional amount, Expiring in 1 year or less	940		34,479
Maximum potential/Notional amount, Expiring in 1-5 years	83,816		48,539
Maximum potential/Notional amount, Expiring over 5 years	166,629		116,173
Maximum potential/Notional amount, Total	251,385		199,191
Credit derivative (asset) liability at fair value	-3,316	[1]	600	[1]
Credit Default Swaps Sold [Member] | Index And Basket Credit Default Swaps Sold [Member] | BTMU [Member] | Investment Grade [Member]	'		'
Credit Derivatives [Line Items]	'		'
Maximum potential/Notional amount, Expiring in 1 year or less	940	[2]	34,479	[2]
Maximum potential/Notional amount, Expiring in 1-5 years	83,816	[2]	47,599	[2]
Maximum potential/Notional amount, Expiring over 5 years	166,629	[2]	116,173	[2]
Maximum potential/Notional amount, Total	251,385	[2]	198,251	[2]
Credit derivative (asset) liability at fair value	-3,316	[1],[2]	600	[1],[2]
Credit Default Swaps Sold [Member] | Index And Basket Credit Default Swaps Sold [Member] | BTMU [Member] | Non-Investment Grade [Member]	'		'
Credit Derivatives [Line Items]	'		'
Maximum potential/Notional amount, Expiring in 1 year or less	'		'
Maximum potential/Notional amount, Expiring in 1-5 years	'		940
Maximum potential/Notional amount, Expiring over 5 years	'		'
Maximum potential/Notional amount, Total	'		940
Credit derivative (asset) liability at fair value	'	[1]	'	[1]
Credit Default Swaps Sold [Member] | Index And Basket Credit Default Swaps Sold [Member] | MUSHD [Member]	'		'
Credit Derivatives [Line Items]	'		'
Maximum potential/Notional amount, Expiring in 1 year or less	122,837		14,883
Maximum potential/Notional amount, Expiring in 1-5 years	398,540		394,806
Maximum potential/Notional amount, Expiring over 5 years	1,000		9,000
Maximum potential/Notional amount, Total	522,377		418,689
Credit derivative (asset) liability at fair value	-6,786	[1]	-4,069	[1]
Credit Default Swaps Sold [Member] | Index And Basket Credit Default Swaps Sold [Member] | MUSHD [Member] | Investment Grade [Member]	'		'
Credit Derivatives [Line Items]	'		'
Maximum potential/Notional amount, Expiring in 1 year or less	122,837	[2]	7,680	[2]
Maximum potential/Notional amount, Expiring in 1-5 years	339,606	[2]	367,814	[2]
Maximum potential/Notional amount, Expiring over 5 years	1,000	[2]	9,000	[2]
Maximum potential/Notional amount, Total	463,443	[2]	384,494	[2]
Credit derivative (asset) liability at fair value	-5,520	[1],[2]	-4,131	[1],[2]
Credit Default Swaps Sold [Member] | Index And Basket Credit Default Swaps Sold [Member] | MUSHD [Member] | Non-Investment Grade [Member]	'		'
Credit Derivatives [Line Items]	'		'
Maximum potential/Notional amount, Expiring in 1 year or less	'		7,203
Maximum potential/Notional amount, Expiring in 1-5 years	7,407		2,284
Maximum potential/Notional amount, Expiring over 5 years	'		'
Maximum potential/Notional amount, Total	7,407		9,487
Credit derivative (asset) liability at fair value	-779	[1]	-153	[1]
Credit Default Swaps Sold [Member] | Index And Basket Credit Default Swaps Sold [Member] | MUSHD [Member] | Not Rated [Member]	'		'
Credit Derivatives [Line Items]	'		'
Maximum potential/Notional amount, Expiring in 1 year or less	'		'
Maximum potential/Notional amount, Expiring in 1-5 years	51,527		24,708
Maximum potential/Notional amount, Expiring over 5 years	'		'
Maximum potential/Notional amount, Total	51,527		24,708
Credit derivative (asset) liability at fair value	-487	[1]	215	[1]
Credit-Linked Notes [Member]	'		'
Credit Derivatives [Line Items]	'		'
Maximum potential/Notional amount, Expiring in 1 year or less	'	[3]	7,500	[3]
Maximum potential/Notional amount, Expiring in 1-5 years	'	[3]	1,505	[3]
Maximum potential/Notional amount, Expiring over 5 years	4,546	[3]	4,517	[3]
Maximum potential/Notional amount, Total	4,546	[3]	13,522	[3]
Credit derivative (asset) liability at fair value	¥ (4,368)	[1],[3]	¥ (12,741)	[1],[3]
[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.
[3]	Fair value amounts shown represent the fair value of the hybrid instruments.

Obligations_Under_Guarantees_A2

Obligations Under Guarantees And Other Off-Balance Sheet Instruments (Narrative) (Detail) (JPY ¥)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Obligations Under Guarantees And Other Off Balance Sheet Instruments [Line Items]	'	'
Amount of guarantees syndicated out to third parties	¥ 183,700,000,000	¥ 160,700,000,000
Contractual maturities of guarantees mainly comprised of guarantees of housing loans, in years	'Over 5 years	'
Liabilities in the segregated records of trust accounts including the amounts related to liabilities with provisions limiting trustee responsibility	7,751,000,000,000	4,839,000,000,000
Carrying amounts of the liabilities related to guarantees and similar instruments	1,441,092,000,000	1,695,799,000,000
Carrying amount of options sold	1,396,178,000,000	1,645,258,000,000
Allowance for off-balance sheet instruments	¥ 35,457,000,000	¥ 27,721,000,000
Lending-related commitments which expire within one year, in percentage	68.00%	'
Lending-related commitments which expire from one year to five years, in percentage	30.00%	'
Lending-related commitments which expire after five years, in percentage	2.00%	'

Obligations_Under_Guarantees_A3

Obligations Under Guarantees And Other Off-Balance Sheet Instruments (Contractual Or Notional Amounts Of Guarantees With Amount By Expiration Period) (Detail) (JPY ¥)	Mar. 31, 2014		Mar. 31, 2013
Guarantor Obligations [Line Items]	'		'
Maximum potential / Contractual or Notional amount, Total	¥ 82,907,000,000,000		¥ 155,373,000,000,000
Maximum potential / Contractual or Notional amount, Expiring in 1 year or less	43,709,000,000,000		107,425,000,000,000
Maximum potential / Contractual or Notional amount, Expiring in 1-5 years	28,618,000,000,000		37,805,000,000,000
Maximum potential / Contractual or Notional amount, Expiring in Over 5 years	10,580,000,000,000		10,143,000,000,000
Standby Letters Of Credit And Financial Guarantees [Member]	'		'
Guarantor Obligations [Line Items]	'		'
Maximum potential / Contractual or Notional amount, Total	3,774,000,000,000		3,849,000,000,000
Maximum potential / Contractual or Notional amount, Expiring in 1 year or less	2,082,000,000,000		2,101,000,000,000
Maximum potential / Contractual or Notional amount, Expiring in 1-5 years	1,116,000,000,000		1,094,000,000,000
Maximum potential / Contractual or Notional amount, Expiring in Over 5 years	576,000,000,000		654,000,000,000
Performance Guarantees [Member]	'		'
Guarantor Obligations [Line Items]	'		'
Maximum potential / Contractual or Notional amount, Total	2,571,000,000,000		2,214,000,000,000
Maximum potential / Contractual or Notional amount, Expiring in 1 year or less	1,766,000,000,000		1,509,000,000,000
Maximum potential / Contractual or Notional amount, Expiring in 1-5 years	727,000,000,000		627,000,000,000
Maximum potential / Contractual or Notional amount, Expiring in Over 5 years	78,000,000,000		78,000,000,000
Derivative Instruments [Member]	'		'
Guarantor Obligations [Line Items]	'		'
Maximum potential / Contractual or Notional amount, Total	68,811,000,000,000	[1]	144,471,000,000,000	[1]
Maximum potential / Contractual or Notional amount, Expiring in 1 year or less	33,281,000,000,000	[1]	99,846,000,000,000	[1]
Maximum potential / Contractual or Notional amount, Expiring in 1-5 years	26,432,000,000,000	[1]	35,784,000,000,000	[1]
Maximum potential / Contractual or Notional amount, Expiring in Over 5 years	9,098,000,000,000	[1]	8,841,000,000,000	[1]
Liabilities Of Trust Accounts [Member]	'		'
Guarantor Obligations [Line Items]	'		'
Maximum potential / Contractual or Notional amount, Total	7,751,000,000,000		4,839,000,000,000
Maximum potential / Contractual or Notional amount, Expiring in 1 year or less	6,580,000,000,000		3,969,000,000,000
Maximum potential / Contractual or Notional amount, Expiring in 1-5 years	343,000,000,000		300,000,000,000
Maximum potential / Contractual or Notional amount, Expiring in Over 5 years	¥ 828,000,000,000		¥ 570,000,000,000
[1]	Credit derivatives sold by the MUFG Group are excluded from this presentation.

Obligations_Under_Guarantees_A4

Obligations Under Guarantees And Other Off-Balance Sheet Instruments (Maximum Potential Amount Of Future Payments Classified Based Upon Internal Credit Ratings) (Detail) (JPY ¥)	12 Months Ended
In Billions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Guarantor Obligations [Line Items]	'		'
Maximum potential / Contractual or Notional amount, Total amount by borrower grade	82,907		155,373
Minimum [Member]	'		'
Guarantor Obligations [Line Items]	'		'
Accruing loans contractually past due, in day	'90 days		'90 days
Standby Letters Of Credit And Financial Guarantees [Member]	'		'
Guarantor Obligations [Line Items]	'		'
Maximum potential / Contractual or Notional amount, Total amount by borrower grade	3,774		3,849
Performance Guarantees [Member]	'		'
Guarantor Obligations [Line Items]	'		'
Maximum potential / Contractual or Notional amount, Total amount by borrower grade	2,571		2,214
Standby Letters Of Credit, Financial And Performance Guarantees [Member]	'		'
Guarantor Obligations [Line Items]	'		'
Maximum potential / Contractual or Notional amount, Total amount by borrower grade	6,345		6,063
Standby Letters Of Credit, Financial And Performance Guarantees [Member] | Standby Letters Of Credit And Financial Guarantees [Member]	'		'
Guarantor Obligations [Line Items]	'		'
Maximum potential / Contractual or Notional amount, Total amount by borrower grade	3,774		3,849
Standby Letters Of Credit, Financial And Performance Guarantees [Member] | Performance Guarantees [Member]	'		'
Guarantor Obligations [Line Items]	'		'
Maximum potential / Contractual or Notional amount, Total amount by borrower grade	2,571		2,214
Normal [Member] | Standby Letters Of Credit, Financial And Performance Guarantees [Member]	'		'
Guarantor Obligations [Line Items]	'		'
Maximum potential / Contractual or Notional amount, Total amount by borrower grade	5,993		5,692
Normal [Member] | Standby Letters Of Credit, Financial And Performance Guarantees [Member] | Standby Letters Of Credit And Financial Guarantees [Member]	'		'
Guarantor Obligations [Line Items]	'		'
Maximum potential / Contractual or Notional amount, Total amount by borrower grade	3,500		3,540
Normal [Member] | Standby Letters Of Credit, Financial And Performance Guarantees [Member] | Performance Guarantees [Member]	'		'
Guarantor Obligations [Line Items]	'		'
Maximum potential / Contractual or Notional amount, Total amount by borrower grade	2,493		2,152
Close Watch [Member] | Standby Letters Of Credit, Financial And Performance Guarantees [Member]	'		'
Guarantor Obligations [Line Items]	'		'
Maximum potential / Contractual or Notional amount, Total amount by borrower grade	224	[1]	225	[1]
Close Watch [Member] | Standby Letters Of Credit, Financial And Performance Guarantees [Member] | Standby Letters Of Credit And Financial Guarantees [Member]	'		'
Guarantor Obligations [Line Items]	'		'
Maximum potential / Contractual or Notional amount, Total amount by borrower grade	171	[1]	182	[1]
Close Watch [Member] | Standby Letters Of Credit, Financial And Performance Guarantees [Member] | Performance Guarantees [Member]	'		'
Guarantor Obligations [Line Items]	'		'
Maximum potential / Contractual or Notional amount, Total amount by borrower grade	53	[1]	43	[1]
Likely To Become Bankrupt Or Legally / Virtually Bankrupt [Member] | Standby Letters Of Credit, Financial And Performance Guarantees [Member]	'		'
Guarantor Obligations [Line Items]	'		'
Maximum potential / Contractual or Notional amount, Total amount by borrower grade	17	[2]	13	[2]
Likely To Become Bankrupt Or Legally / Virtually Bankrupt [Member] | Standby Letters Of Credit, Financial And Performance Guarantees [Member] | Standby Letters Of Credit And Financial Guarantees [Member]	'		'
Guarantor Obligations [Line Items]	'		'
Maximum potential / Contractual or Notional amount, Total amount by borrower grade	9	[2]	11	[2]
Likely To Become Bankrupt Or Legally / Virtually Bankrupt [Member] | Standby Letters Of Credit, Financial And Performance Guarantees [Member] | Performance Guarantees [Member]	'		'
Guarantor Obligations [Line Items]	'		'
Maximum potential / Contractual or Notional amount, Total amount by borrower grade	8	[2]	2	[2]
Not Rated [Member] | Standby Letters Of Credit, Financial And Performance Guarantees [Member]	'		'
Guarantor Obligations [Line Items]	'		'
Maximum potential / Contractual or Notional amount, Total amount by borrower grade	111		133
Not Rated [Member] | Standby Letters Of Credit, Financial And Performance Guarantees [Member] | Standby Letters Of Credit And Financial Guarantees [Member]	'		'
Guarantor Obligations [Line Items]	'		'
Maximum potential / Contractual or Notional amount, Total amount by borrower grade	94		116
Not Rated [Member] | Standby Letters Of Credit, Financial And Performance Guarantees [Member] | Performance Guarantees [Member]	'		'
Guarantor Obligations [Line Items]	'		'
Maximum potential / Contractual or Notional amount, Total amount by borrower grade	17		17
[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.

Obligations_Under_Guarantees_A5

Obligations Under Guarantees And Other Off-Balance Sheet Instruments (Contractual Amounts With Regard To Other Off-Balance Sheet Instruments) (Detail) (JPY ¥)	Mar. 31, 2014	Mar. 31, 2013
In Billions, unless otherwise specified
Commitments To Extend Credit [Member]	'	'
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]	'	'
Contractual amounts with regard to other off-balance-sheet instruments	¥ 72,240	¥ 66,702
Commercial Letters Of Credit [Member]	'	'
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]	'	'
Contractual amounts with regard to other off-balance-sheet instruments	855	706
Commitments To Make Investments [Member]	'	'
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]	'	'
Contractual amounts with regard to other off-balance-sheet instruments	81	94
Other [Member]	'	'
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]	'	'
Contractual amounts with regard to other off-balance-sheet instruments	¥ 21	'

Variable_Interest_Entities_Ass

Variable Interest Entities (Assets And Liabilities Of Consolidated Variable Interest Entities) (Detail) (JPY ¥)	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
In Millions, unless otherwise specified
Variable Interest Entity [Line Items]	'	'	'	'
Consolidated assets, Cash and due from banks	¥ 3,689,228	¥ 3,619,253	¥ 3,230,409	¥ 3,230,804
Consolidated assets, Interest-earning deposits in other banks	20,500,676	8,111,887	'	'
Consolidated assets, Trading account assets	40,646,275	40,826,384	'	'
Consolidated assets, Investment securities	55,330,251	61,865,185	'	'
Consolidated assets, Loans	109,181,991	97,254,242	'	'
Consolidated liabilities, Deposits	162,517,786	148,209,739	'	'
Consolidated liabilities, Other short-term borrowings	11,106,071	11,608,598	'	'
Consolidated liabilities, Long-term debt	14,498,678	12,182,358	'	'
Consolidated VIEs [Member]	'	'	'	'
Variable Interest Entity [Line Items]	'	'	'	'
Consolidated assets, Total	10,379,642	10,177,097	'	'
Consolidated assets, Cash and due from banks	3,167	2,692	'	'
Consolidated assets, Interest-earning deposits in other banks	33,158	26,087	'	'
Consolidated assets, Trading account assets	2,219,754	2,376,590	'	'
Consolidated assets, Investment securities	867,779	701,873	'	'
Consolidated assets, Loans	7,019,653	6,814,877	'	'
Consolidated assets, All other assets	236,131	254,978	'	'
Consolidated liabilities, Total	1,270,463	1,585,146	'	'
Consolidated liabilities, Other short-term borrowings	44,221	39,773	'	'
Consolidated liabilities, Long-term debt	966,838	1,166,694	'	'
Consolidated liabilities, All other liabilities	259,404	378,679	'	'
Consolidated VIEs [Member] | Consolidated VIEs Before Elimination [Member]	'	'	'	'
Variable Interest Entity [Line Items]	'	'	'	'
Consolidated assets, Total	11,808,054	11,304,787	'	'
Consolidated assets, Cash and due from banks	78,864	74,418	'	'
Consolidated assets, Interest-earning deposits in other banks	158,194	97,551	'	'
Consolidated assets, Trading account assets	2,221,637	2,377,827	'	'
Consolidated assets, Investment securities	867,785	701,879	'	'
Consolidated assets, Loans	8,228,001	7,781,493	'	'
Consolidated assets, All other assets	253,573	271,619	'	'
Consolidated liabilities, Total	9,378,209	8,954,642	'	'
Consolidated liabilities, Deposits	1,320,209	1,001,815	'	'
Consolidated liabilities, Other short-term borrowings	5,313,465	4,964,453	'	'
Consolidated liabilities, Long-term debt	2,129,885	2,316,429	'	'
Consolidated liabilities, All other liabilities	614,650	671,945	'	'
Consolidated VIEs [Member] | Consolidated VIEs Before Elimination [Member] | Asset-Backed Conduits [Member]	'	'	'	'
Variable Interest Entity [Line Items]	'	'	'	'
Consolidated assets, Total	6,202,924	5,641,295	'	'
Consolidated assets, Cash and due from banks	30,484	25,520	'	'
Consolidated assets, Interest-earning deposits in other banks	117,116	72,968	'	'
Consolidated assets, Trading account assets	1,783	966	'	'
Consolidated assets, Investment securities	762,103	601,444	'	'
Consolidated assets, Loans	5,277,749	4,927,509	'	'
Consolidated assets, All other assets	13,689	12,888	'	'
Consolidated liabilities, Total	6,227,784	5,645,471	'	'
Consolidated liabilities, Other short-term borrowings	5,239,304	4,868,648	'	'
Consolidated liabilities, Long-term debt	467,005	330,171	'	'
Consolidated liabilities, All other liabilities	521,475	446,652	'	'
Consolidated VIEs [Member] | Consolidated VIEs Before Elimination [Member] | Investment Funds [Member]	'	'	'	'
Variable Interest Entity [Line Items]	'	'	'	'
Consolidated assets, Total	2,433,575	2,567,049	'	'
Consolidated assets, Cash and due from banks	46,198	47,176	'	'
Consolidated assets, Interest-earning deposits in other banks	36,076	18,113	'	'
Consolidated assets, Trading account assets	2,190,419	2,322,430	'	'
Consolidated assets, Investment securities	10,270	8,643	'	'
Consolidated assets, Loans	'	173	'	'
Consolidated assets, All other assets	150,612	170,514	'	'
Consolidated liabilities, Total	87,702	232,533	'	'
Consolidated liabilities, Other short-term borrowings	'	1,348	'	'
Consolidated liabilities, Long-term debt	422	12,246	'	'
Consolidated liabilities, All other liabilities	87,280	218,939	'	'
Consolidated VIEs [Member] | Consolidated VIEs Before Elimination [Member] | Special Purpose Entities Created For Structured Financing [Member]	'	'	'	'
Variable Interest Entity [Line Items]	'	'	'	'
Consolidated assets, Total	257,874	175,627	'	'
Consolidated assets, Cash and due from banks	1,840	1,427	'	'
Consolidated assets, Interest-earning deposits in other banks	2,794	2,188	'	'
Consolidated assets, Loans	236,115	156,903	'	'
Consolidated assets, All other assets	17,125	15,109	'	'
Consolidated liabilities, Total	174,055	173,928	'	'
Consolidated liabilities, Other short-term borrowings	1,993	5,241	'	'
Consolidated liabilities, Long-term debt	169,231	166,810	'	'
Consolidated liabilities, All other liabilities	2,831	1,877	'	'
Consolidated VIEs [Member] | Consolidated VIEs Before Elimination [Member] | Repackaged Instruments [Member]	'	'	'	'
Variable Interest Entity [Line Items]	'	'	'	'
Consolidated assets, Total	29,296	56,902	'	'
Consolidated assets, Trading account assets	29,296	54,154	'	'
Consolidated assets, Loans	'	2,748	'	'
Consolidated liabilities, Total	29,181	57,452	'	'
Consolidated liabilities, Long-term debt	29,000	56,236	'	'
Consolidated liabilities, All other liabilities	181	1,216	'	'
Consolidated VIEs [Member] | Consolidated VIEs Before Elimination [Member] | Securitization Of The MUFG Group's Assets [Member]	'	'	'	'
Variable Interest Entity [Line Items]	'	'	'	'
Consolidated assets, Total	1,473,901	1,756,940	'	'
Consolidated assets, Loans	1,439,002	1,720,066	'	'
Consolidated assets, All other assets	34,899	36,874	'	'
Consolidated liabilities, Total	1,452,857	1,741,837	'	'
Consolidated liabilities, Other short-term borrowings	23,800	25,000	'	'
Consolidated liabilities, Long-term debt	1,428,202	1,715,823	'	'
Consolidated liabilities, All other liabilities	855	1,014	'	'
Consolidated VIEs [Member] | Consolidated VIEs Before Elimination [Member] | Trust Arrangements [Member]	'	'	'	'
Variable Interest Entity [Line Items]	'	'	'	'
Consolidated assets, Total	1,325,602	1,006,961	'	'
Consolidated assets, Interest-earning deposits in other banks	1,528	3,601	'	'
Consolidated assets, Trading account assets	139	277	'	'
Consolidated assets, Investment securities	95,339	91,707	'	'
Consolidated assets, Loans	1,226,221	909,146	'	'
Consolidated assets, All other assets	2,375	2,230	'	'
Consolidated liabilities, Total	1,322,103	1,003,916	'	'
Consolidated liabilities, Deposits	1,320,209	1,001,815	'	'
Consolidated liabilities, All other liabilities	1,894	2,101	'	'
Consolidated VIEs [Member] | Consolidated VIEs Before Elimination [Member] | Others [Member]	'	'	'	'
Variable Interest Entity [Line Items]	'	'	'	'
Consolidated assets, Total	84,882	100,013	'	'
Consolidated assets, Cash and due from banks	342	295	'	'
Consolidated assets, Interest-earning deposits in other banks	680	681	'	'
Consolidated assets, Investment securities	73	85	'	'
Consolidated assets, Loans	48,914	64,948	'	'
Consolidated assets, All other assets	34,873	34,004	'	'
Consolidated liabilities, Total	84,527	99,505	'	'
Consolidated liabilities, Other short-term borrowings	48,368	64,216	'	'
Consolidated liabilities, Long-term debt	36,025	35,143	'	'
Consolidated liabilities, All other liabilities	134	146	'	'
Consolidated VIEs [Member] | Eliminated In Consolidation [Member]	'	'	'	'
Variable Interest Entity [Line Items]	'	'	'	'
Consolidated assets, Total	-1,428,412	-1,127,690	'	'
Consolidated assets, Cash and due from banks	-75,697	-71,726	'	'
Consolidated assets, Interest-earning deposits in other banks	-125,036	-71,464	'	'
Consolidated assets, Trading account assets	-1,883	-1,237	'	'
Consolidated assets, Investment securities	-6	-6	'	'
Consolidated assets, Loans	-1,208,348	-966,616	'	'
Consolidated assets, All other assets	-17,442	-16,641	'	'
Consolidated liabilities, Total	-4,196,910	-4,251,981	'	'
Consolidated liabilities, Other short-term borrowings	-2,988,582	-3,078,982	'	'
Consolidated liabilities, Long-term debt	-1,163,047	-1,146,963	'	'
Consolidated liabilities, All other liabilities	-45,281	-26,036	'	'
Consolidated VIEs [Member] | Amount Of Liabilities With Recourse To The General Credit Of MUFG Group [Member]	'	'	'	'
Variable Interest Entity [Line Items]	'	'	'	'
Consolidated liabilities, Total	-3,910,836	-3,117,515	'	'
Consolidated liabilities, Deposits	-1,320,209	-1,001,815	'	'
Consolidated liabilities, Other short-term borrowings	-2,280,662	-1,845,698	'	'
Consolidated liabilities, Long-term debt	'	-2,772	'	'
Consolidated liabilities, All other liabilities	¥ (309,965)	¥ (267,230)	'	'

Variable_Interest_Entities_Ass1

Variable Interest Entities (Assets And Liabilities Of Non Consolidated Variable Interest Entities) (Detail) (Non-consolidated VIEs [Member], JPY ¥)	Mar. 31, 2014	Mar. 31, 2013
In Millions, unless otherwise specified
Variable Interest Entity [Line Items]	'	'
Total assets	¥ 127,720,042	¥ 101,916,093
Maximum exposure	12,853,477	10,692,299
On-balance sheet assets, Trading account assets	571,202	481,306
On-balance sheet assets, Investment securities	2,534,953	2,066,576
On-balance sheet assets, Loans	7,255,293	5,956,049
On-balance sheet assets, All other assets	10,102	8,066
On-balance sheet assets, Total assets	10,371,550	8,511,997
On-balance sheet liabilities, All other liabilities	7,601	7,490
On-balance sheet liabilities, Total liabilities	7,601	7,490
Asset-Backed Conduits [Member]	'	'
Variable Interest Entity [Line Items]	'	'
Total assets	16,114,320	12,926,458
Maximum exposure	3,826,653	3,072,591
On-balance sheet assets, Trading account assets	1,851	3,384
On-balance sheet assets, Investment securities	512,835	363,521
On-balance sheet assets, Loans	2,364,858	1,889,998
On-balance sheet assets, All other assets	1	'
On-balance sheet assets, Total assets	2,879,545	2,256,903
On-balance sheet liabilities, All other liabilities	217	'
On-balance sheet liabilities, Total liabilities	217	'
Investment Funds [Member]	'	'
Variable Interest Entity [Line Items]	'	'
Total assets	24,216,292	25,517,222
Maximum exposure	844,762	744,935
On-balance sheet assets, Trading account assets	100,099	168,580
On-balance sheet assets, Investment securities	300,295	149,036
On-balance sheet assets, Loans	326,860	317,046
On-balance sheet assets, All other assets	8,169	'
On-balance sheet assets, Total assets	735,423	634,662
On-balance sheet liabilities, All other liabilities	'	1,186
On-balance sheet liabilities, Total liabilities	'	1,186
Special Purpose Entities Created For Structured Financing [Member]	'	'
Variable Interest Entity [Line Items]	'	'
Total assets	27,811,920	20,978,132
Maximum exposure	3,305,869	3,048,178
On-balance sheet assets, Trading account assets	138,023	136,118
On-balance sheet assets, Investment securities	84,964	85,254
On-balance sheet assets, Loans	2,361,243	2,124,202
On-balance sheet assets, All other assets	1,932	983
On-balance sheet assets, Total assets	2,586,162	2,346,557
On-balance sheet liabilities, All other liabilities	1,788	466
On-balance sheet liabilities, Total liabilities	1,788	466
Repackaged Instruments [Member]	'	'
Variable Interest Entity [Line Items]	'	'
Total assets	9,106,418	13,097,513
Maximum exposure	2,132,268	1,638,067
On-balance sheet assets, Trading account assets	202,209	106,661
On-balance sheet assets, Investment securities	1,536,859	1,181,828
On-balance sheet assets, Loans	295,112	258,237
On-balance sheet assets, Total assets	2,034,180	1,546,726
Trust Arrangements [Member]	'	'
Variable Interest Entity [Line Items]	'	'
Total assets	26,795	14,866
Maximum exposure	23,680	13,589
On-balance sheet assets, Loans	22,940	12,740
On-balance sheet assets, Total assets	22,940	12,740
On-balance sheet liabilities, All other liabilities	5,471	5,739
On-balance sheet liabilities, Total liabilities	5,471	5,739
Others [Member]	'	'
Variable Interest Entity [Line Items]	'	'
Total assets	50,444,297	29,381,902
Maximum exposure	2,720,245	2,174,939
On-balance sheet assets, Trading account assets	129,020	66,563
On-balance sheet assets, Investment securities	100,000	286,937
On-balance sheet assets, Loans	1,884,280	1,353,826
On-balance sheet assets, All other assets	'	7,083
On-balance sheet assets, Total assets	2,113,300	1,714,409
On-balance sheet liabilities, All other liabilities	125	99
On-balance sheet liabilities, Total liabilities	¥ 125	¥ 99

Commitments_And_Contingent_Lia2

Commitments And Contingent Liabilities (Narrative) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Commitments And Contingent Liabilities [Line Items]	'	'	'
Fiscal year of expiration of lease under noncancelable agreements	'2046	'	'
Rental expense	¥ 103,754	¥ 99,817	¥ 97,105
Limit on aggregate credit extensions over the borrower's annual income aggregate credit extensions	33.33%	'	'
Allowance for repayment of excess interest	54,068	77,640	'
Provision (reversal) for repayment of excess interest recognized on Equity in earnings (losses) of equity method investee	¥ 18,014	¥ 17,014	¥ 19,326
Maximum [Member]	'	'	'
Commitments And Contingent Liabilities [Line Items]	'	'	'
Previous permissible interest rate under the Japanese Investment Deposit and Interest Rate Law	29.20%	'	'
Current permissible interest rate under the Japanese Investment Deposit and Interest Rate Law	20.00%	'	'
Gray-zone interest rates stipulated by the Interest Rate Restriction Act	20.00%	'	'
Minimum [Member]	'	'	'
Commitments And Contingent Liabilities [Line Items]	'	'	'
Gray-zone interest rates stipulated by the Interest Rate Restriction Act	15.00%	'	'

Commitments_And_Contingent_Lia3

Commitments And Contingent Liabilities (Future Minimum Rental Commitments For Noncancelable Leases) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014
Operating Leases, Future Minimum Rental Commitments For Noncancelable Leases:	'
Fiscal year ending March 31, 2015	¥ 85,660
Fiscal year ending March 31, 2016	71,855
Fiscal year ending March 31, 2017	63,872
Fiscal year ending March 31, 2018	59,021
Fiscal year ending March 31, 2019	53,614
Fiscal year ending March 31, 2020 and thereafter	390,208
Total minimum lease payment	724,230	[1]
Future commencement date of non-cancelable operating lease agreement entered into	'2016-04
Total minimum lease payments under future non-cancelable operating lease agreements	30,247
Capitalized Leases, Future Minimum Rental Commitments For Noncancelable Leases:	'
Fiscal year ending March 31, 2015	7,640
Fiscal year ending March 31, 2016	4,561
Fiscal year ending March 31, 2017	3,271
Fiscal year ending March 31, 2018	1,640
Fiscal year ending March 31, 2019	893
Fiscal year ending March 31, 2020 and thereafter	4,642
Total minimum lease payment	22,647
Amount representing interest	-2,528
Present value of minimum lease payments	¥ 20,119
[1]	One of MUFG's subsidiaries has entered into non-cancelable operating lease agreements which will commence in April, 2016. The total minimum lease payments of ¥30,247 million under these commitments have been included in the above.

Fees_And_Commissions_Income_De

Fees And Commissions Income (Details Of Fees And Commissions Income) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Fees And Commissions Income [Line Items]	'	'	'
Fees and commissions income	¥ 1,294,116	¥ 1,160,874	¥ 1,099,963
Trust Fees [Member]	'	'	'
Fees And Commissions Income [Line Items]	'	'	'
Fees and commissions income	105,721	92,525	95,037
Fees On Funds Transfer And Service Charges For Collections [Member]	'	'	'
Fees And Commissions Income [Line Items]	'	'	'
Fees and commissions income	139,974	137,338	139,840
Fees And Commissions On International Business [Member]	'	'	'
Fees And Commissions Income [Line Items]	'	'	'
Fees and commissions income	68,273	58,905	57,688
Fees And Commissions On Credit Card Business [Member]	'	'	'
Fees And Commissions Income [Line Items]	'	'	'
Fees and commissions income	157,227	149,671	149,946
Service Charges On Deposits [Member]	'	'	'
Fees And Commissions Income [Line Items]	'	'	'
Fees and commissions income	20,451	16,727	18,216
Fees And Commissions On Securities Business [Member]	'	'	'
Fees And Commissions Income [Line Items]	'	'	'
Fees and commissions income	221,791	155,983	128,436
Fees On Real Estate Business [Member]	'	'	'
Fees And Commissions Income [Line Items]	'	'	'
Fees and commissions income	34,715	28,041	23,610
Insurance Commissions [Member]	'	'	'
Fees And Commissions Income [Line Items]	'	'	'
Fees and commissions income	39,669	33,472	33,686
Fees And Commissions On Stock Transfer Agency Services [Member]	'	'	'
Fees And Commissions Income [Line Items]	'	'	'
Fees and commissions income	49,394	49,137	49,283
Guarantee Fees [Member]	'	'	'
Fees And Commissions Income [Line Items]	'	'	'
Fees and commissions income	52,634	55,427	58,393
Fees On Investment Funds Business [Member]	'	'	'
Fees And Commissions Income [Line Items]	'	'	'
Fees and commissions income	155,572	130,006	126,601
Other Fees And Commissions [Member]	'	'	'
Fees And Commissions Income [Line Items]	'	'	'
Fees and commissions income	¥ 248,695	¥ 253,642	¥ 219,227

Trading_Account_Profits_And_Lo2

Trading Account Profits And Losses (Net Trading Gains (Losses)) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2012
Schedule of Trading Securities and Other Trading Assets [Line Items]	'		'		'
Interest rate and other derivative contracts	¥ (84,408)		¥ (82,684)		¥ 77,698
Trading account securities, excluding derivatives	50,522		652,960		589,587
Trading account profits (losses)-net	-33,886		570,276		667,285
Foreign exchange derivative contracts	-52,737	[1]	-94,223	[1]	-94,853	[1]
Net trading gains (losses)	¥ (86,623)		¥ 476,053		¥ 572,432
[1]	Gains (losses) on foreign exchange derivative contracts are included in Foreign exchange gains (losses)-net in the accompanying consolidated statements of income. Foreign exchange gains (losses)-net in the accompanying consolidated statements of income are also comprised of foreign exchange gains (losses) other than derivative contracts and foreign exchange gains (losses) related to the fair value option.

Business_Segments_Narrative_De

Business Segments (Narrative) (Detail) (Integrated Global Business Group [Member], JPY ¥)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Integrated Global Business Group [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Number of offices outside Japan	'More than 500 offices	'	'
Impact on total operating profit due to the change in the managerial accounting methodologies	'	'	'

Business_Segments_Financial_In

Business Segments (Financial Information By Business Segment) (Detail) (JPY ¥)	12 Months Ended
In Billions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2012
Segment Reporting Information [Line Items]	'		'		'
Net revenue	¥ 3,873.1		¥ 3,716.7		¥ 3,581.1
Operating expenses	2,410		2,209.10		2,102.60
Operating profit (loss)	1,463.10		1,507.60		1,478.50
BTMU And MUTB [Member]	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Net revenue	2,286.70		2,390.30		2,349.40
Net revenue, Net interest income	1,307.80		1,318		1,347.30
Net revenue, Net fees	646.1		582.4		543.3
Net revenue, Other	332.8		489.9		458.8
Other Than BTMU And MUTB [Member]	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Net revenue	1,586.40	[1]	1,326.40	[1]	1,231.70	[1]
Business Segment [Member] | Integrated Retail Banking Business Group [Member]	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Net revenue	1,290.60		1,207.80		1,227.10
Operating expenses	961.9		917.3		915.8
Operating profit (loss)	328.7		290.5		311.3
Business Segment [Member] | Integrated Retail Banking Business Group [Member] | BTMU And MUTB [Member]	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Net revenue	569.9		561.5		583
Net revenue, Net interest income	398.1		428.1		467.7
Net revenue, Net fees	163.5		124.8		105.6
Net revenue, Other	8.3		8.6		9.7
Business Segment [Member] | Integrated Retail Banking Business Group [Member] | Other Than BTMU And MUTB [Member]	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Net revenue	720.7	[1]	646.3	[1]	644.1	[1]
Business Segment [Member] | Integrated Corporate Banking Business Group [Member]	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Net revenue	924.5		864		870.7
Operating expenses	438.4		434.4		440.5
Operating profit (loss)	486.1		429.6		430.2
Business Segment [Member] | Integrated Corporate Banking Business Group [Member] | BTMU And MUTB [Member]	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Net revenue	801		767.9		778.2
Net revenue, Net interest income	374.8		382.2		402.8
Net revenue, Net fees	337.5		312.6		303.1
Net revenue, Other	88.7		73.1		72.3
Business Segment [Member] | Integrated Corporate Banking Business Group [Member] | Other Than BTMU And MUTB [Member]	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Net revenue	123.5	[1]	96.1	[1]	92.5	[1]
Business Segment [Member] | Integrated Trust Assets Business Group [Member]	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Net revenue	159.2		138.8		140.1
Operating expenses	94.4		88.3		87.3
Operating profit (loss)	64.8		50.5		52.8
Business Segment [Member] | Integrated Trust Assets Business Group [Member] | BTMU And MUTB [Member]	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Net revenue	65.5		55.4		55.7
Net revenue, Net fees	65.5		55.4		55.7
Business Segment [Member] | Integrated Trust Assets Business Group [Member] | Other Than BTMU And MUTB [Member]	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Net revenue	93.7	[1]	83.4	[1]	84.4	[1]
Business Segment [Member] | Integrated Global Business Group [Member]	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Net revenue	943.8		753.9		616.6
Operating expenses	566.4		452.2		369.5
Operating profit (loss)	377.4		301.7		247.1
Business Segment [Member] | Integrated Global Business Group [Member] | Other Than MUAH [Member]	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Net revenue	567.9		465.4		364.6
Operating expenses	299.5		246.8		196.5
Operating profit (loss)	268.4		218.6		168.1
Business Segment [Member] | Integrated Global Business Group [Member] | MUAH [Member]	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Net revenue	375.9		288.5		252
Operating expenses	266.9		205.4		173
Operating profit (loss)	109		83.1		79
Business Segment [Member] | Integrated Global Business Group [Member] | BTMU And MUTB [Member]	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Net revenue	443.1		358.4		286.1
Net revenue, Net interest income	235.8		181.5		128.2
Net revenue, Net fees	164.7		141.6		122.6
Net revenue, Other	42.6		35.3		35.3
Business Segment [Member] | Integrated Global Business Group [Member] | BTMU And MUTB [Member] | Other Than MUAH [Member]	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Net revenue	443.1		358.4		286.1
Net revenue, Net interest income	235.8		181.5		128.2
Net revenue, Net fees	164.7		141.6		122.6
Net revenue, Other	42.6		35.3		35.3
Business Segment [Member] | Integrated Global Business Group [Member] | Other Than BTMU And MUTB [Member]	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Net revenue	500.7	[1]	395.5	[1]	330.5	[1]
Business Segment [Member] | Integrated Global Business Group [Member] | Other Than BTMU And MUTB [Member] | Other Than MUAH [Member]	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Net revenue	124.8	[1]	107	[1]	78.5	[1]
Business Segment [Member] | Integrated Global Business Group [Member] | Other Than BTMU And MUTB [Member] | MUAH [Member]	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Net revenue	375.9	[1]	288.5	[1]	252	[1]
Business Segment [Member] | Global Markets [Member]	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Net revenue	568.6		763		727.9
Operating expenses	176.5		142.5		128.1
Operating profit (loss)	392.1		620.5		599.8
Business Segment [Member] | Global Markets [Member] | BTMU And MUTB [Member]	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Net revenue	411.6		655.7		645.8
Net revenue, Net interest income	219.5		262.1		309
Net revenue, Net fees	-23.1		-19.2		-16.4
Net revenue, Other	215.2		412.8		353.2
Business Segment [Member] | Global Markets [Member] | Other Than BTMU And MUTB [Member]	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Net revenue	157	[1]	107.3	[1]	82.1	[1]
Other [Member]	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Net revenue	-13.6		-10.8		-1.3
Operating expenses	172.4		174.4		161.4
Operating profit (loss)	-186		-185.2		-162.7
Other [Member] | BTMU And MUTB [Member]	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Net revenue	-4.4		-8.6		0.6
Net revenue, Net interest income	79.6		64.1		39.6
Net revenue, Net fees	-62		-32.8		-27.3
Net revenue, Other	-22		-39.9		-11.7
Other [Member] | Other Than BTMU And MUTB [Member]	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Net revenue	¥ (9.2)	[1]	¥ (2.2)	[1]	¥ (1.9)	[1]
[1]	Includes MUFG and its subsidiaries other than BTMU and MUTB.

Business_Segments_Reconciliati

Business Segments (Reconciliation Of Operating Profit (Loss) From Segments To Consolidated Statements Of Income) (Detail) (JPY ¥)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]	'	'	'
Operating profit	¥ 1,463,100,000,000	¥ 1,507,600,000,000	¥ 1,478,500,000,000
Credit (provision) for credit losses	106,371,000,000	-144,542,000,000	-223,809,000,000
Trading account profits (losses)-net	-33,886,000,000	570,276,000,000	667,285,000,000
Foreign exchange gains (losses)-net	-61,755,000,000	-38,955,000,000	34,302,000,000
Equity in earnings (losses) of equity method investees-net	110,520,000,000	60,210,000,000	-499,427,000,000
Impairment of goodwill	-7,792,000,000	'	'
Impairment of intangible assets	-312,000,000	-3,378,000,000	-30,986,000,000
Income before income tax expense	1,420,443,000,000	1,415,871,000,000	849,942,000,000
Reconciliation [Member]	'	'	'
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]	'	'	'
Operating profit	1,463,000,000,000	1,508,000,000,000	1,479,000,000,000
Credit (provision) for credit losses	106,000,000,000	-145,000,000,000	-224,000,000,000
Trading account profits (losses)-net	-394,000,000,000	285,000,000,000	372,000,000,000
Equity investment securities gains (losses)-net	170,000,000,000	-22,000,000,000	-95,000,000,000
Debt investment securities losses-net	-6,000,000,000	-153,000,000,000	-153,000,000,000
Foreign exchange gains (losses)-net	-48,000,000,000	-53,000,000,000	21,000,000,000
Equity in earnings (losses) of equity method investees-net	111,000,000,000	60,000,000,000	-499,000,000,000
Impairment of goodwill	-8,000,000,000	'	'
Impairment of intangible assets	'	-3,000,000,000	-31,000,000,000
Other-net	26,000,000,000	-61,000,000,000	-20,000,000,000
Income before income tax expense	¥ 1,420,000,000,000	¥ 1,416,000,000,000	¥ 850,000,000,000

Foreign_Activities_Estimated_F

Foreign Activities (Estimated Financial Information By Geographic Areas) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2012
Foreign Activities Disclosure [Line Items]	'		'		'
Total revenue	¥ 4,343,364	[1]	¥ 4,495,430	[1]	¥ 4,036,532	[1],[2]
Total expense	2,922,921	[3]	3,079,559	[3]	3,186,590	[3]
Income (loss) before income tax expense (benefit)	1,420,443		1,415,871		849,942
Net income (loss) attributable to Mitsubishi UFJ Financial Group	1,015,393		1,069,124		416,231
Total assets at end of fiscal year	253,661,077		230,559,276		215,202,514
Domestic, Japan [Member]	'		'		'
Foreign Activities Disclosure [Line Items]	'		'		'
Total revenue	3,110,050	[1]	3,016,008	[1]	2,936,875	[1],[2]
Total expense	1,952,250	[3]	2,248,856	[3]	2,438,729	[3]
Income (loss) before income tax expense (benefit)	1,157,800		767,152		498,146
Net income (loss) attributable to Mitsubishi UFJ Financial Group	859,846		499,125		163,334
Total assets at end of fiscal year	158,809,701		151,999,696		148,702,461
Foreign, United States Of America [Member]	'		'		'
Foreign Activities Disclosure [Line Items]	'		'		'
Total revenue	218,953	[1]	426,377	[1]	192,775	[1],[2]
Total expense	426,084	[3]	327,565	[3]	284,557	[3]
Income (loss) before income tax expense (benefit)	-207,131		98,812		-91,782
Net income (loss) attributable to Mitsubishi UFJ Financial Group	-131,566		95,565		-119,829
Total assets at end of fiscal year	40,625,000		30,730,705		28,457,027
Foreign, Europe [Member]	'		'		'
Foreign Activities Disclosure [Line Items]	'		'		'
Total revenue	155,022	[1]	256,495	[1]	290,482	[1],[2]
Total expense	143,417	[3]	160,061	[3]	151,077	[3]
Income (loss) before income tax expense (benefit)	11,605		96,434		139,405
Net income (loss) attributable to Mitsubishi UFJ Financial Group	6,484		78,442		113,593
Total assets at end of fiscal year	22,352,446		23,224,502		18,620,484
Foreign, Asia / Oceania Excluding Japan [Member]	'		'		'
Foreign Activities Disclosure [Line Items]	'		'		'
Total revenue	569,018	[1]	585,474	[1]	450,651	[1],[2]
Total expense	315,203	[3]	268,349	[3]	223,253	[3]
Income (loss) before income tax expense (benefit)	253,815		317,125		227,398
Net income (loss) attributable to Mitsubishi UFJ Financial Group	149,417		274,951		192,753
Total assets at end of fiscal year	22,312,805		15,938,673		12,410,540
Foreign, Other Areas [Member]	'		'		'
Foreign Activities Disclosure [Line Items]	'		'		'
Total revenue	290,321	[1],[4]	211,076	[1],[4]	165,749	[1],[2],[4]
Total expense	85,967	[3],[4]	74,728	[3],[4]	88,974	[3],[4]
Income (loss) before income tax expense (benefit)	204,354	[4]	136,348	[4]	76,775	[4]
Net income (loss) attributable to Mitsubishi UFJ Financial Group	131,212	[4]	121,041	[4]	66,380	[4]
Total assets at end of fiscal year	¥ 9,561,125	[4]	¥ 8,665,700	[4]	¥ 7,012,002	[4]
[1]	Total revenue is comprised of Interest income and Non-interest income.
[2]	For the fiscal year ended March 31, 2012, Total revenue of United States of America includes an other-than-temporary impairment loss of Morgan Stanley's common stock. See Note 2 for further details of an other-than-temporary impairment loss of Morgan Stanley's common stock.
[3]	Total expense is comprised of Interest expense, Provision for credit losses and Non-interest expense.
[4]	Other areas primarily include Canada, Latin America, the Caribbean and the Middle East.

Foreign_Activities_Analysis_Of

Foreign Activities (Analysis Of Certain Asset And Liability Accounts Related To Foreign Activities) (Detail) (JPY ¥)	Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2012	Mar. 31, 2011
In Millions, unless otherwise specified
Foreign Activities Disclosure [Line Items]	'		'		'	'
Cash and due from banks	¥ 3,689,228		¥ 3,619,253		¥ 3,230,409	¥ 3,230,804
Interest-earning deposits in other banks	20,500,676		8,111,887		'	'
Trading account assets, Trading securities	40,646,275		40,826,384		'	'
Investment securities	55,330,251		61,865,185		'	'
Loans-net of unearned income, unamortized premiums and deferred loan fees	110,276,411	[1]	98,590,229	[1]	'	'
Deposits	162,517,786		148,209,739		'	'
Funds borrowed:	'		'		'	'
Call money, funds purchased	3,417,455		4,010,582		'	'
Payables under repurchase agreements	21,268,072		15,700,394		'	'
Payables under securities lending transactions	5,520,718		3,992,950		'	'
Other short-term borrowings	11,106,071		11,608,598		'	'
Long-term debt	14,498,678		12,182,358		'	'
Trading account liabilities	11,981,978		14,969,482		'	'
Foreign [Member]	'		'		'	'
Foreign Activities Disclosure [Line Items]	'		'		'	'
Cash and due from banks	804,617		676,833		'	'
Interest-earning deposits in other banks	9,020,949		3,830,923		'	'
Cash and due from banks with Interest-earning deposits in other banks, Total	9,825,566		4,507,756		'	'
Trading account assets, Trading securities	28,319,251		28,450,804		'	'
Investment securities	4,749,265		6,960,616		'	'
Loans-net of unearned income, unamortized premiums and deferred loan fees	39,763,643		29,174,592		'	'
Deposits	40,648,813		29,317,297		'	'
Funds borrowed:	'		'		'	'
Call money, funds purchased	201,606		254,796		'	'
Payables under repurchase agreements	8,995,939		6,857,970		'	'
Payables under securities lending transactions	96,202		77,428		'	'
Other short-term borrowings	3,698,004		2,531,308		'	'
Long-term debt	3,376,761		2,847,585		'	'
Total	16,368,512		12,569,087		'	'
Trading account liabilities	¥ 5,876,702		¥ 7,012,658		'	'
[1]	The above table includes loans held for sale of ¥35,261 million and ¥46,635 million at March 31, 2013 and 2014, respectively, which are carried at the lower of cost or estimated fair value.

Fair_Value_Narrative_Detail

Fair Value (Narrative) (Detail) (JPY ¥)	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014
In Billions, unless otherwise specified			Other Nonmarketable Securities [Member]	Other Nonmarketable Securities [Member]	Hedge Funds [Member]	Hedge Funds [Member]	Private Equity Funds [Member]	Real Estate Funds [Member]
					Minimum [Member]	Maximum [Member]
Fair Value [Line Items]	'	'	'	'	'	'	'	'
Advance notice period of redeemable investment, day	'	'	'	'	'30 days	'90 days	'	'
Estimated period of underlying investments that would be liquidated, year	'	'	'	'	'	'	'10 years	'4 years
Carrying value of investment securities not practical to estimate fair value	'	'	¥ 549	¥ 504	'	'	'	'
Carrying amounts of investments in equity method investees	¥ 1,620	¥ 1,274	'	'	'	'	'	'

Fair_Value_Assets_And_Liabilit

Fair Value (Assets And Liabilities Measured At Fair Value By Level On Recurring Basis) (Detail) (JPY ¥)	Mar. 31, 2014		Mar. 31, 2013
In Millions, unless otherwise specified
Assets:	'		'
Trading account assets, Trading securities	¥ 40,646,275		¥ 40,826,384
Investment securities, Securities available-for-sale	51,885,652		58,844,069
Marketable Equity Securities [Member]	'		'
Assets:	'		'
Investment securities, Securities available-for-sale	4,837,231		4,097,404
Fair Value, Measurements, Recurring [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	28,837,319	[1]	26,180,506	[1]
Trading account assets, Trading derivative assets	11,808,956		14,645,878
Investment securities, Securities available-for-sale	51,885,652		58,844,069
Investment securities, Other investment securities	26,201		25,900
Others	523,123	[2],[3]	597,999	[2],[3]
Assets at fair value, Total	93,081,251		100,294,352
Liabilities:	'		'
Trading account liabilities, Trading securities sold, not yet purchased	194,243		78,813
Trading account liabilities, Trading derivative liabilities	11,787,735		14,890,669
Obligation to return securities received as collateral	3,971,454		3,034,547
Others	704,991	[4]	553,705	[4]
Liabilities at fair value, Total	16,658,423		18,557,734
Equity securities classified as trading securities valued at net asset value	28,922		38,959
Unfunded commitment of trading securities classified as equity securities valued at net asset value	11,373		8,644
Real estate funds classified as other assets valued at net asset value	1,669		4,276
Hedged funds classified as other assets valued at net asset value	1,232		3,189
Private equity funds classified as other assets valued at net asset value	2,441		2,943
Unfunded commitment of real estate funds classified as other assets valued at net asset value	'		'
Unfunded commitment of hedged funds classified as other assets valued at net asset value	104		1,221
Unfunded commitment of private equity funds classified as other assets valued at net asset value	1,871		2,028
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	20,102,994	[1]	15,613,802	[1]
Trading account assets, Trading derivative assets	90,740		52,242
Investment securities, Securities available-for-sale	45,302,514		52,347,228
Others	489,356	[2],[3]	455,012	[2],[3]
Assets at fair value, Total	65,985,604		68,468,284
Liabilities:	'		'
Trading account liabilities, Trading securities sold, not yet purchased	189,524		72,756
Trading account liabilities, Trading derivative liabilities	108,059		124,431
Obligation to return securities received as collateral	3,914,441		2,887,425
Liabilities at fair value, Total	4,212,024		3,084,612
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	8,075,408	[1]	9,935,591	[1]
Trading account assets, Trading derivative assets	11,640,992		14,520,461
Investment securities, Securities available-for-sale	6,038,450		6,024,714
Investment securities, Other investment securities	'		1,105
Others	28,169	[2],[3]	134,569	[2],[3]
Assets at fair value, Total	25,783,019		30,616,440
Liabilities:	'		'
Trading account liabilities, Trading securities sold, not yet purchased	4,719		6,057
Trading account liabilities, Trading derivative liabilities	11,611,316		14,672,597
Obligation to return securities received as collateral	57,013		147,122
Others	612,124	[4]	431,773	[4]
Liabilities at fair value, Total	12,285,172		15,257,549
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	658,917	[1]	631,113	[1]
Trading account assets, Trading derivative assets	77,224		73,175
Investment securities, Securities available-for-sale	544,688		472,127
Investment securities, Other investment securities	26,201		24,795
Others	5,598	[2],[3]	8,418	[2],[3]
Assets at fair value, Total	1,312,628		1,209,628
Liabilities:	'		'
Trading account liabilities, Trading derivative liabilities	68,360		93,641
Others	92,867	[4]	121,932	[4]
Liabilities at fair value, Total	161,227		215,573
Fair Value, Measurements, Recurring [Member] | Interest Rate Contracts [Member]	'		'
Assets:	'		'
Trading account assets, Trading derivative assets	8,616,092		11,214,327
Liabilities:	'		'
Trading account liabilities, Trading derivative liabilities	8,521,766		11,204,827
Fair Value, Measurements, Recurring [Member] | Interest Rate Contracts [Member] | Level 1 [Member]	'		'
Assets:	'		'
Trading account assets, Trading derivative assets	22,677		6,770
Liabilities:	'		'
Trading account liabilities, Trading derivative liabilities	25,293		43,946
Fair Value, Measurements, Recurring [Member] | Interest Rate Contracts [Member] | Level 2 [Member]	'		'
Assets:	'		'
Trading account assets, Trading derivative assets	8,565,213		11,175,763
Liabilities:	'		'
Trading account liabilities, Trading derivative liabilities	8,481,947		11,126,837
Fair Value, Measurements, Recurring [Member] | Interest Rate Contracts [Member] | Level 3 [Member]	'		'
Assets:	'		'
Trading account assets, Trading derivative assets	28,202		31,794
Liabilities:	'		'
Trading account liabilities, Trading derivative liabilities	14,526		34,044
Fair Value, Measurements, Recurring [Member] | Foreign Exchange Contracts [Member]	'		'
Assets:	'		'
Trading account assets, Trading derivative assets	2,916,179		3,192,644
Liabilities:	'		'
Trading account liabilities, Trading derivative liabilities	2,998,778		3,428,433
Fair Value, Measurements, Recurring [Member] | Foreign Exchange Contracts [Member] | Level 1 [Member]	'		'
Assets:	'		'
Trading account assets, Trading derivative assets	507		511
Liabilities:	'		'
Trading account liabilities, Trading derivative liabilities	3,997		274
Fair Value, Measurements, Recurring [Member] | Foreign Exchange Contracts [Member] | Level 2 [Member]	'		'
Assets:	'		'
Trading account assets, Trading derivative assets	2,909,201		3,171,002
Liabilities:	'		'
Trading account liabilities, Trading derivative liabilities	2,981,272		3,390,222
Fair Value, Measurements, Recurring [Member] | Foreign Exchange Contracts [Member] | Level 3 [Member]	'		'
Assets:	'		'
Trading account assets, Trading derivative assets	6,471		21,131
Liabilities:	'		'
Trading account liabilities, Trading derivative liabilities	13,509		37,937
Fair Value, Measurements, Recurring [Member] | Equity Contracts [Member]	'		'
Assets:	'		'
Trading account assets, Trading derivative assets	148,686		103,671
Liabilities:	'		'
Trading account liabilities, Trading derivative liabilities	143,595		131,217
Fair Value, Measurements, Recurring [Member] | Equity Contracts [Member] | Level 1 [Member]	'		'
Assets:	'		'
Trading account assets, Trading derivative assets	50,425		34,062
Liabilities:	'		'
Trading account liabilities, Trading derivative liabilities	57,464		67,551
Fair Value, Measurements, Recurring [Member] | Equity Contracts [Member] | Level 2 [Member]	'		'
Assets:	'		'
Trading account assets, Trading derivative assets	65,827		53,874
Liabilities:	'		'
Trading account liabilities, Trading derivative liabilities	57,892		49,312
Fair Value, Measurements, Recurring [Member] | Equity Contracts [Member] | Level 3 [Member]	'		'
Assets:	'		'
Trading account assets, Trading derivative assets	32,434		15,735
Liabilities:	'		'
Trading account liabilities, Trading derivative liabilities	28,239		14,354
Fair Value, Measurements, Recurring [Member] | Commodity Contracts [Member]	'		'
Assets:	'		'
Trading account assets, Trading derivative assets	71,059		73,602
Liabilities:	'		'
Trading account liabilities, Trading derivative liabilities	62,058		63,845
Fair Value, Measurements, Recurring [Member] | Commodity Contracts [Member] | Level 1 [Member]	'		'
Assets:	'		'
Trading account assets, Trading derivative assets	17,131		10,899
Liabilities:	'		'
Trading account liabilities, Trading derivative liabilities	21,305		12,660
Fair Value, Measurements, Recurring [Member] | Commodity Contracts [Member] | Level 2 [Member]	'		'
Assets:	'		'
Trading account assets, Trading derivative assets	43,826		59,075
Liabilities:	'		'
Trading account liabilities, Trading derivative liabilities	30,029		46,753
Fair Value, Measurements, Recurring [Member] | Commodity Contracts [Member] | Level 3 [Member]	'		'
Assets:	'		'
Trading account assets, Trading derivative assets	10,102		3,628
Liabilities:	'		'
Trading account liabilities, Trading derivative liabilities	10,724		4,432
Fair Value, Measurements, Recurring [Member] | Credit Derivatives [Member]	'		'
Assets:	'		'
Trading account assets, Trading derivative assets	56,940		61,634
Liabilities:	'		'
Trading account liabilities, Trading derivative liabilities	61,538		62,347
Fair Value, Measurements, Recurring [Member] | Credit Derivatives [Member] | Level 2 [Member]	'		'
Assets:	'		'
Trading account assets, Trading derivative assets	56,925		60,747
Liabilities:	'		'
Trading account liabilities, Trading derivative liabilities	60,176		59,473
Fair Value, Measurements, Recurring [Member] | Credit Derivatives [Member] | Level 3 [Member]	'		'
Assets:	'		'
Trading account assets, Trading derivative assets	15		887
Liabilities:	'		'
Trading account liabilities, Trading derivative liabilities	1,362		2,874
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member] | Japanese National Government And Japanese Government Agency Bonds [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	5,924,318		4,602,555
Investment securities, Securities available-for-sale	41,589,009		49,479,954
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member] | Japanese National Government And Japanese Government Agency Bonds [Member] | Level 1 [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	5,688,374		4,420,457
Investment securities, Securities available-for-sale	39,852,612		48,069,738
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member] | Japanese National Government And Japanese Government Agency Bonds [Member] | Level 2 [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	235,944		182,098
Investment securities, Securities available-for-sale	1,736,397		1,410,216
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member] | Japanese Prefectural And Municipal Bonds [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	89,017		129,974
Investment securities, Securities available-for-sale	203,131		217,075
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member] | Japanese Prefectural And Municipal Bonds [Member] | Level 2 [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	89,017		129,974
Investment securities, Securities available-for-sale	203,131		217,075
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member] | Foreign Governments And Official Institutions Bonds [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	14,932,951		12,223,674
Investment securities, Securities available-for-sale	1,271,421		716,296
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member] | Foreign Governments And Official Institutions Bonds [Member] | Level 1 [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	13,133,023		9,983,023
Investment securities, Securities available-for-sale	794,822		319,176
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member] | Foreign Governments And Official Institutions Bonds [Member] | Level 2 [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	1,784,478		2,144,396
Investment securities, Securities available-for-sale	324,952		248,398
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member] | Foreign Governments And Official Institutions Bonds [Member] | Level 3 [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	15,450		96,255
Investment securities, Securities available-for-sale	151,647		148,722
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member] | Corporate Bonds [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	3,292,575		2,806,981
Investment securities, Securities available-for-sale	1,561,129		1,922,946
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member] | Corporate Bonds [Member] | Level 2 [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	3,160,057		2,729,892
Investment securities, Securities available-for-sale	1,485,280		1,830,100
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member] | Corporate Bonds [Member] | Level 3 [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	132,518		77,089
Investment securities, Securities available-for-sale	75,849		92,846
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member] | Residential Mortgage-Backed Securities [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	1,495,148		3,229,917
Investment securities, Securities available-for-sale	980,595		1,223,620
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member] | Residential Mortgage-Backed Securities [Member] | Level 2 [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	1,483,547		3,220,036
Investment securities, Securities available-for-sale	961,337		1,202,128
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member] | Residential Mortgage-Backed Securities [Member] | Level 3 [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	11,601		9,881
Investment securities, Securities available-for-sale	19,258		21,492
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member] | Commercial Mortgage-Backed Securities [Member]	'		'
Assets:	'		'
Investment securities, Securities available-for-sale	200,146		269,382
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member] | Commercial Mortgage-Backed Securities [Member] | Level 2 [Member]	'		'
Assets:	'		'
Investment securities, Securities available-for-sale	197,034		269,343
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member] | Commercial Mortgage-Backed Securities [Member] | Level 3 [Member]	'		'
Assets:	'		'
Investment securities, Securities available-for-sale	3,112		39
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member] | Asset-Backed Securities [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	655,350		476,518
Investment securities, Securities available-for-sale	1,058,044		810,678
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member] | Asset-Backed Securities [Member] | Level 2 [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	215,686		80,447
Investment securities, Securities available-for-sale	948,168		708,428
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member] | Asset-Backed Securities [Member] | Level 3 [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	439,664		396,071
Investment securities, Securities available-for-sale	109,876		102,250
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member] | Other Debt Securities [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	52,850		41,123
Investment securities, Securities available-for-sale	184,946		106,714
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member] | Other Debt Securities [Member] | Level 2 [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	20,285		11,597
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member] | Other Debt Securities [Member] | Level 3 [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	32,565		29,526
Investment securities, Securities available-for-sale	184,946		106,714
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member] | Commercial Paper [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	794,868		1,129,508
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member] | Commercial Paper [Member] | Level 2 [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	794,868		1,129,508
Fair Value, Measurements, Recurring [Member] | Equity Securities [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	1,600,242	[5]	1,540,256	[5]
Fair Value, Measurements, Recurring [Member] | Equity Securities [Member] | Level 1 [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	1,281,597	[5]	1,210,322	[5]
Fair Value, Measurements, Recurring [Member] | Equity Securities [Member] | Level 2 [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	291,526	[5]	307,643	[5]
Fair Value, Measurements, Recurring [Member] | Equity Securities [Member] | Level 3 [Member]	'		'
Assets:	'		'
Trading account assets, Trading securities	27,119	[5]	22,291	[5]
Fair Value, Measurements, Recurring [Member] | Marketable Equity Securities [Member]	'		'
Assets:	'		'
Investment securities, Securities available-for-sale	4,837,231		4,097,404
Fair Value, Measurements, Recurring [Member] | Marketable Equity Securities [Member] | Level 1 [Member]	'		'
Assets:	'		'
Investment securities, Securities available-for-sale	4,655,080		3,958,314
Fair Value, Measurements, Recurring [Member] | Marketable Equity Securities [Member] | Level 2 [Member]	'		'
Assets:	'		'
Investment securities, Securities available-for-sale	182,151		139,026
Fair Value, Measurements, Recurring [Member] | Marketable Equity Securities [Member] | Level 3 [Member]	'		'
Assets:	'		'
Investment securities, Securities available-for-sale	'		¥ 64
[1]	Includes securities measured under the fair value option.
[2]	Mainly comprised of securities received as collateral that may be sold or repledged under securities lending transactions, money in trust for segregating cash deposited by customers on security transactions and derivatives designated as hedging instruments.
[3]	Includes investments valued at net asset value of real estate funds, hedge funds and private equity funds, whose fair values at March 31, 2013 were ¥4,276 million, ¥3,189 million and ¥2,943 million, respectively, and those at March 31, 2014 were ¥1,669 million, ¥1,232 million and ¥2,441 million, respectively. The amounts of unfunded commitments related to these real estate funds, hedge funds and private equity funds at March 31, 2013 were nil, ¥1,221 million and ¥2,028 million, respectively, and those at March 31, 2014 were nil, ¥104 million and ¥1,871 million, respectively.
[4]	Includes other short-term borrowings, long-term debt, bifurcated embedded derivatives carried at fair value and derivative liabilities designated as hedging instruments.
[5]	Includes investments valued at net asset value of ¥38,959 million and ¥28,922 million at March 31, 2013 and 2014, respectively. The unfunded commitments related to these investments at March 31, 2013 and 2014 were ¥8,644 million and ¥11,373 million, respectively. These investments were mainly hedge funds.

Fair_Value_Transfers_Between_L

Fair Value (Transfers Between Level 1 And Level 2) (Detail) (Fair Value, Measurements, Recurring [Member], JPY ¥)	Mar. 31, 2014		Mar. 31, 2013
In Millions, unless otherwise specified
Trading Account Assets, Trading Securities [Member] | Debt Securities [Member] | Japanese National Government And Japanese Government Agency Bonds [Member]	'		'
Assets:	'		'
Transfers out of Level 1 into Level 2, Assets	¥ 7,420	[1]	'
Transfers out of Level 2 into Level 1, Assets	'		10,717	[1]
Trading Account Assets, Trading Securities [Member] | Debt Securities [Member] | Foreign Governments And Official Institutions Bonds [Member]	'		'
Assets:	'		'
Transfers out of Level 2 into Level 1, Assets	'		1,289	[1]
Trading Account Assets, Trading Securities [Member] | Debt Securities [Member] | Residential Mortgage-Backed Securities [Member]	'		'
Assets:	'		'
Transfers out of Level 1 into Level 2, Assets	'		3,247,522	[1]
Trading Account Assets, Trading Securities [Member] | Equity Securities [Member]	'		'
Assets:	'		'
Transfers out of Level 1 into Level 2, Assets	13,762	[1]	5,308	[1]
Investment Securities, Securities Available-For-Sale [Member] | Debt Securities [Member] | Foreign Governments And Official Institutions Bonds [Member]	'		'
Assets:	'		'
Transfers out of Level 1 into Level 2, Assets	'		413,515	[1]
Investment Securities, Securities Available-For-Sale [Member] | Marketable Equity Securities [Member]	'		'
Assets:	'		'
Transfers out of Level 1 into Level 2, Assets	19,011	[1]	19,026	[1]
Transfers out of Level 2 into Level 1, Assets	¥ 13,252	[1]	¥ 13,737	[1]
[1]	All transfers between Level 1 and Level 2 were assumed to have occurred at the beginning of the first-half or the second-half of the fiscal year.

Fair_Value_Reconciliation_Of_A

Fair Value (Reconciliation Of Assets And Liabilities Measured At Fair Value On Recurring Basis Using Level 3 Inputs) (Detail) (Fair Value, Measurements, Recurring [Member], JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'		'
Level 3 assets, Beginning balance	¥ 1,115,987		¥ 2,765,275
Total gains (losses) for the period included in earnings, Assets	87,733		99,699
Total gains (losses) for the period included in other comprehensive income, Assets	48,089		10,675
Purchases, Assets	763,866		752,094
Issues, Assets	-4,889		-2,775
Sales, Assets	-319,038		-380,471
Settlements, Assets	-394,876		-614,805
Transfers into Level 3, Assets	32,434	[1]	192,404	[1]
Transfers out of Level 3, Assets	-85,038	[1]	-1,706,109	[1]
Level 3 assets, Ending balance	1,244,268		1,115,987
Change in unrealized gains (losses) included in earnings for assets still held at period end	51,842		77,361
Level 3 liabilities, Beginning balance	121,932		43,536
Total gains (losses) for the period included in earnings, Liabilities	-19,097		-74,957
Total gains (losses) for the period included in other comprehensive income, Liabilities	-24,145		-20,590
Purchases, Liabilities	'		239
Issues, Liabilities	302		2,432
Sales, Liabilities	'		'
Settlements, Liabilities	-28,498		-20,907
Transfers into Level 3, Liabilities	-10	[1]	1,181	[1]
Transfers out of Level 3, Liabilities	-44,101	[1]	-96	[1]
Level 3 liabilities, Ending balance	92,867		121,932
Change in unrealized gains (losses) included in earnings for liabilities still held at period end	-10,707		-61,188
Trading securities, Private placement bonds issued by non-public companies, Level 3 to Level 2 transfers, amount	'		223,938
Securities available-for-sale, Private placement bonds issued by non-public companies, Level 3 to Level 2 transfers, amount	'		1,209,272
Others [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'		'
Level 3 liabilities, Beginning balance	121,932		43,536
Total gains (losses) for the period included in earnings, Liabilities	-19,097	[2]	-74,957	[2]
Total gains (losses) for the period included in other comprehensive income, Liabilities	-24,145		-20,590
Purchases, Liabilities	'		239
Issues, Liabilities	302		2,432
Sales, Liabilities	'		'
Settlements, Liabilities	-28,498		-20,907
Transfers into Level 3, Liabilities	-10	[1]	1,181	[1]
Transfers out of Level 3, Liabilities	-44,101	[1]	-96	[1]
Level 3 liabilities, Ending balance	92,867		121,932
Change in unrealized gains (losses) included in earnings for liabilities still held at period end	-10,707	[2]	-61,188	[2]
Trading Account Assets, Trading Securities [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'		'
Level 3 assets, Beginning balance	631,113	[3]	1,076,657	[3]
Total gains (losses) for the period included in earnings, Assets	50,809	[3],[4]	77,239	[3],[4]
Purchases, Assets	499,143	[3]	518,698	[3]
Sales, Assets	-302,363	[3]	-360,580	[3]
Settlements, Assets	-173,816	[3]	-378,767	[3]
Transfers into Level 3, Assets	12,574	[1],[3]	49,521	[1],[3]
Transfers out of Level 3, Assets	-58,543	[1],[3]	-351,655	[1],[3]
Level 3 assets, Ending balance	658,917	[3]	631,113	[3]
Change in unrealized gains (losses) included in earnings for assets still held at period end	36,144	[3],[4]	64,764	[3],[4]
Trading Account Assets, Trading Securities [Member] | Debt Securities [Member] | Foreign Governments And Official Institutions Bonds [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'		'
Level 3 assets, Beginning balance	96,255		149,731
Total gains (losses) for the period included in earnings, Assets	4,905		19,142
Purchases, Assets	65,828		179,907
Sales, Assets	-72,059		-205,581
Settlements, Assets	-32,354		-24,043
Transfers into Level 3, Assets	2,414	[1]	23,202	[1]
Transfers out of Level 3, Assets	-49,539	[1]	-46,103	[1]
Level 3 assets, Ending balance	15,450		96,255
Change in unrealized gains (losses) included in earnings for assets still held at period end	232		11,831
Trading Account Assets, Trading Securities [Member] | Debt Securities [Member] | Corporate Bonds [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'		'
Level 3 assets, Beginning balance	77,089		501,895
Total gains (losses) for the period included in earnings, Assets	4,916		3,354
Purchases, Assets	100,011		55,147
Sales, Assets	-43,326		-2,089
Settlements, Assets	-7,242		-223,088
Transfers into Level 3, Assets	10,074	[1],[5]	26,315	[1],[5]
Transfers out of Level 3, Assets	-9,004	[1],[5]	-284,445	[1],[5],[6]
Level 3 assets, Ending balance	132,518		77,089
Change in unrealized gains (losses) included in earnings for assets still held at period end	4,922		5,206
Trading Account Assets, Trading Securities [Member] | Debt Securities [Member] | Residential Mortgage-Backed Securities [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'		'
Level 3 assets, Beginning balance	9,881		10,124
Total gains (losses) for the period included in earnings, Assets	1,187		1,677
Purchases, Assets	83,179		12,050
Sales, Assets	-81,698		-12,042
Settlements, Assets	-948		-1,928
Level 3 assets, Ending balance	11,601		9,881
Change in unrealized gains (losses) included in earnings for assets still held at period end	702		1,599
Trading Account Assets, Trading Securities [Member] | Debt Securities [Member] | Asset-Backed Securities [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'		'
Level 3 assets, Beginning balance	396,071		395,198
Total gains (losses) for the period included in earnings, Assets	32,794		44,365
Purchases, Assets	245,342		239,598
Sales, Assets	-101,271		-132,275
Settlements, Assets	-133,272		-129,708
Transfers out of Level 3, Assets	'		-21,107	[1]
Level 3 assets, Ending balance	439,664		396,071
Change in unrealized gains (losses) included in earnings for assets still held at period end	27,252		41,748
Trading Account Assets, Trading Securities [Member] | Debt Securities [Member] | Other Debt Securities [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'		'
Level 3 assets, Beginning balance	29,526		'
Total gains (losses) for the period included in earnings, Assets	3,039		4,358
Purchases, Assets	'		25,168
Level 3 assets, Ending balance	32,565		29,526
Change in unrealized gains (losses) included in earnings for assets still held at period end	3,039		4,358
Trading Account Assets, Trading Securities [Member] | Equity Securities [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'		'
Level 3 assets, Beginning balance	22,291		19,709
Total gains (losses) for the period included in earnings, Assets	3,968		4,343
Purchases, Assets	4,783		6,828
Sales, Assets	-4,009		-8,593
Transfers into Level 3, Assets	86	[1]	4	[1]
Level 3 assets, Ending balance	27,119		22,291
Change in unrealized gains (losses) included in earnings for assets still held at period end	-3		22
Trading Account Assets, Trading Derivatives [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'		'
Level 3 assets, Beginning balance	-20,466		-27,458
Total gains (losses) for the period included in earnings, Assets	30,791	[4]	20,344	[4]
Total gains (losses) for the period included in other comprehensive income, Assets	-3,463		-5,408
Purchases, Assets	4,732		1,379
Issues, Assets	-4,889		-2,775
Settlements, Assets	-2,252		-24,964
Transfers into Level 3, Assets	15,116	[1]	29,392	[1]
Transfers out of Level 3, Assets	-10,705	[1]	-10,976	[1]
Level 3 assets, Ending balance	8,864		-20,466
Change in unrealized gains (losses) included in earnings for assets still held at period end	15,146	[4]	17,466	[4]
Trading Account Assets, Trading Derivatives [Member] | Interest Rate Contracts [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'		'
Level 3 assets, Beginning balance	-2,250		-44,904
Total gains (losses) for the period included in earnings, Assets	19,554		42,457
Total gains (losses) for the period included in other comprehensive income, Assets	714		233
Purchases, Assets	878		2
Issues, Assets	'		-4
Settlements, Assets	-4,762		-8,468
Transfers into Level 3, Assets	6,712	[1]	8,431	[1]
Transfers out of Level 3, Assets	-7,170	[1]	3	[1]
Level 3 assets, Ending balance	13,676		-2,250
Change in unrealized gains (losses) included in earnings for assets still held at period end	14,695		38,552
Trading Account Assets, Trading Derivatives [Member] | Foreign Exchange Contracts [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'		'
Level 3 assets, Beginning balance	-16,806		23,907
Total gains (losses) for the period included in earnings, Assets	9,615		-28,164
Total gains (losses) for the period included in other comprehensive income, Assets	-3,835		-5,517
Purchases, Assets	770		448
Issues, Assets	-1,215		-1,852
Settlements, Assets	-431		-16,150
Transfers into Level 3, Assets	8,432	[1]	21,644	[1]
Transfers out of Level 3, Assets	-3,568	[1]	-11,122	[1]
Level 3 assets, Ending balance	-7,038		-16,806
Change in unrealized gains (losses) included in earnings for assets still held at period end	460		-27,532
Trading Account Assets, Trading Derivatives [Member] | Equity Contracts [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'		'
Level 3 assets, Beginning balance	1,381		-7,019
Total gains (losses) for the period included in earnings, Assets	4,125		9,275
Total gains (losses) for the period included in other comprehensive income, Assets	34		10
Purchases, Assets	1,323		444
Issues, Assets	-1,323		-434
Settlements, Assets	-1,345		-833
Transfers into Level 3, Assets	'		-62	[1]
Level 3 assets, Ending balance	4,195		1,381
Change in unrealized gains (losses) included in earnings for assets still held at period end	202		9,449
Trading Account Assets, Trading Derivatives [Member] | Commodity Contracts [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'		'
Level 3 assets, Beginning balance	-804		162
Total gains (losses) for the period included in earnings, Assets	109		-438
Total gains (losses) for the period included in other comprehensive income, Assets	-10		-19
Purchases, Assets	1,761		485
Issues, Assets	-2,351		-485
Settlements, Assets	668		-52
Transfers into Level 3, Assets	-28	[1]	-600	[1]
Transfers out of Level 3, Assets	33	[1]	143	[1]
Level 3 assets, Ending balance	-622		-804
Change in unrealized gains (losses) included in earnings for assets still held at period end	809		-140
Trading Account Assets, Trading Derivatives [Member] | Credit Derivatives [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'		'
Level 3 assets, Beginning balance	-1,987		396
Total gains (losses) for the period included in earnings, Assets	-2,612		-2,786
Total gains (losses) for the period included in other comprehensive income, Assets	-366		-115
Settlements, Assets	3,618		539
Transfers into Level 3, Assets	'		-21	[1]
Level 3 assets, Ending balance	-1,347		-1,987
Change in unrealized gains (losses) included in earnings for assets still held at period end	-1,020		-2,863
Investment Securities, Securities Available-For-Sale [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'		'
Level 3 assets, Beginning balance	472,127		1,673,387
Total gains (losses) for the period included in earnings, Assets	3,950	[7]	3,218	[7]
Total gains (losses) for the period included in other comprehensive income, Assets	51,538		16,083
Purchases, Assets	256,776		230,505
Sales, Assets	-10,961		-14,809
Settlements, Assets	-218,806		-211,058
Transfers into Level 3, Assets	4,744	[1]	113,491	[1]
Transfers out of Level 3, Assets	-14,680	[1]	-1,338,690	[1]
Level 3 assets, Ending balance	544,688		472,127
Change in unrealized gains (losses) included in earnings for assets still held at period end	-869	[7]	-4,380	[7]
Investment Securities, Securities Available-For-Sale [Member] | Debt Securities [Member] | Foreign Governments And Official Institutions Bonds [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'		'
Level 3 assets, Beginning balance	148,722		130,720
Total gains (losses) for the period included in other comprehensive income, Assets	3,393		2,582
Purchases, Assets	5,574		23,158
Sales, Assets	'		-31
Settlements, Assets	-6,042		-7,707
Level 3 assets, Ending balance	151,647		148,722
Investment Securities, Securities Available-For-Sale [Member] | Debt Securities [Member] | Corporate Bonds [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'		'
Level 3 assets, Beginning balance	92,846		1,460,489
Total gains (losses) for the period included in earnings, Assets	4,059		1,629
Total gains (losses) for the period included in other comprehensive income, Assets	-51		-1,855
Purchases, Assets	5,046		11,465
Sales, Assets	-1,367		-12,843
Settlements, Assets	-14,772		-140,840
Transfers into Level 3, Assets	4,744	[1],[5]	113,491	[1],[5]
Transfers out of Level 3, Assets	-14,656	[1],[5]	-1,338,690	[1],[5],[6]
Level 3 assets, Ending balance	75,849		92,846
Change in unrealized gains (losses) included in earnings for assets still held at period end	-873		-4,370
Investment Securities, Securities Available-For-Sale [Member] | Debt Securities [Member] | Residential Mortgage-Backed Securities [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'		'
Level 3 assets, Beginning balance	21,492		22,351
Total gains (losses) for the period included in earnings, Assets	3		-27
Total gains (losses) for the period included in other comprehensive income, Assets	83		100
Purchases, Assets	3,015		4,500
Sales, Assets	-609		'
Settlements, Assets	-4,726		-5,432
Level 3 assets, Ending balance	19,258		21,492
Change in unrealized gains (losses) included in earnings for assets still held at period end	'		-1
Investment Securities, Securities Available-For-Sale [Member] | Debt Securities [Member] | Commercial Mortgage-Backed Securities [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'		'
Level 3 assets, Beginning balance	39		3,802
Total gains (losses) for the period included in earnings, Assets	'		1,090
Total gains (losses) for the period included in other comprehensive income, Assets	-153		-126
Purchases, Assets	3,265		'
Sales, Assets	-39		-1,855
Settlements, Assets	'		-2,872
Level 3 assets, Ending balance	3,112		39
Investment Securities, Securities Available-For-Sale [Member] | Debt Securities [Member] | Asset-Backed Securities [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'		'
Level 3 assets, Beginning balance	102,250		54,947
Total gains (losses) for the period included in earnings, Assets	-120		606
Total gains (losses) for the period included in other comprehensive income, Assets	17,636		8,400
Purchases, Assets	178,735		85,469
Sales, Assets	-8,751		'
Settlements, Assets	-179,874		-47,172
Level 3 assets, Ending balance	109,876		102,250
Change in unrealized gains (losses) included in earnings for assets still held at period end	4		30
Investment Securities, Securities Available-For-Sale [Member] | Debt Securities [Member] | Other Debt Securities [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'		'
Level 3 assets, Beginning balance	106,714		964
Total gains (losses) for the period included in earnings, Assets	'		-84
Total gains (losses) for the period included in other comprehensive income, Assets	30,630		6,980
Purchases, Assets	61,118		105,889
Sales, Assets	-195		'
Settlements, Assets	-13,321		-7,035
Level 3 assets, Ending balance	184,946		106,714
Change in unrealized gains (losses) included in earnings for assets still held at period end	'		-43
Investment Securities, Securities Available-For-Sale [Member] | Marketable Equity Securities [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'		'
Level 3 assets, Beginning balance	64		114
Total gains (losses) for the period included in earnings, Assets	8		4
Total gains (losses) for the period included in other comprehensive income, Assets	'		2
Purchases, Assets	23		24
Sales, Assets	'		-80
Settlements, Assets	-71		'
Transfers out of Level 3, Assets	-24	[1]	'
Level 3 assets, Ending balance	'		64
Change in unrealized gains (losses) included in earnings for assets still held at period end	'		4
Investment Securities, Other Investment Securities [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'		'
Level 3 assets, Beginning balance	24,795		32,321
Total gains (losses) for the period included in earnings, Assets	1,751	[2]	-505	[2]
Total gains (losses) for the period included in other comprehensive income, Assets	14		'
Purchases, Assets	2,879		875
Sales, Assets	-2,126		-3,092
Settlements, Assets	-2		-16
Transfers out of Level 3, Assets	-1,110	[1]	-4,788	[1]
Level 3 assets, Ending balance	26,201		24,795
Change in unrealized gains (losses) included in earnings for assets still held at period end	1,258	[2]	-618	[2]
Others [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'		'
Level 3 assets, Beginning balance	8,418		10,368
Total gains (losses) for the period included in earnings, Assets	432	[2]	-597	[2]
Purchases, Assets	336		637
Sales, Assets	-3,588		-1,990
Level 3 assets, Ending balance	5,598		8,418
Change in unrealized gains (losses) included in earnings for assets still held at period end	¥ 163	[2]	¥ 129	[2]
[1]	All transfers out of Level 3 or into Level 3 were assumed to have occurred at the beginning of the first-half or the second-half of the fiscal year.
[2]	Included in Trading account profits (losses)-net.
[3]	Includes Trading securities under fair value option.
[4]	Included in Trading account profits (losses)-net and in Foreign exchange gains (losses)-net.
[5]	Transfers out of and transfers into Level 3 for corporate bonds were due principally to changes in the impact of unobservable credit worthiness inputs of the private placement bonds.
[6]	Certain private placement bonds issued by non-public companies which are accounted for as trading account securities amounted to ¥223,938 million and securities available-for-sale amounted to ¥1,209,272 million were transferred from Level 3 to Level 2 during the fiscal year ended March 31, 2013. These transfers were due to change in the significance of the unobservable inputs used to measure fair value of the private placement bonds.
[7]	Included in Investment securities gains-net.

Fair_Value_Quantitative_Inform

Fair Value (Quantitative Information About Level 3 Fair Value Measurements) (Detail) (Fair Value, Measurements, Recurring [Member], JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'		'
Trading securities and Investment securities at fair value	93,081,251		100,294,352
Level 3 [Member]	'		'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'		'
Trading securities and Investment securities at fair value	1,312,628		1,209,628
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Foreign Governments And Official Institutions Bonds [Member] | Monte Carlo Method [Member]	'		'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'		'
Trading securities and Investment securities at fair value	6,876	[1]	33,649	[1]
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Foreign Governments And Official Institutions Bonds [Member] | Monte Carlo Method [Member] | Minimum [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Correlation between interest rate and foreign exchange rate	32.60%		32.50%
Fair value inputs, Correlation between interest rates	42.10%		41.30%
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Foreign Governments And Official Institutions Bonds [Member] | Monte Carlo Method [Member] | Maximum [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Correlation between interest rate and foreign exchange rate	48.30%		51.90%
Fair value inputs, Correlation between interest rates	59.80%		63.30%
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Foreign Governments And Official Institutions Bonds [Member] | Monte Carlo Method [Member] | Weighted Average [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Correlation between interest rate and foreign exchange rate	37.30%	[2]	36.00%	[2]
Fair value inputs, Correlation between interest rates	58.10%	[2]	62.10%	[2]
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Foreign Governments And Official Institutions Bonds [Member] | Return On Equity Method [Member]	'		'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'		'
Trading securities and Investment securities at fair value	23,983	[1]	19,699	[1]
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Foreign Governments And Official Institutions Bonds [Member] | Return On Equity Method [Member] | Minimum [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Probability of default	0.30%		0.00%
Fair value inputs, Recovery rate	60.00%		25.00%
Fair value inputs, Market-required return on capital	8.00%		15.00%
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Foreign Governments And Official Institutions Bonds [Member] | Return On Equity Method [Member] | Maximum [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Probability of default	1.90%		8.00%
Fair value inputs, Recovery rate	80.00%		90.00%
Fair value inputs, Market-required return on capital	10.00%		17.00%
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Foreign Governments And Official Institutions Bonds [Member] | Return On Equity Method [Member] | Weighted Average [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Probability of default	0.90%	[2]	0.70%	[2]
Fair value inputs, Recovery rate	73.00%	[2]	56.20%	[2]
Fair value inputs, Market-required return on capital	9.40%	[2]	15.70%	[2]
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Corporate Bonds [Member] | Discounted Cash Flow [Member]	'		'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'		'
Trading securities and Investment securities at fair value	126,101	[1]	62,788	[1]
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Corporate Bonds [Member] | Discounted Cash Flow [Member] | Minimum [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Probability of default	0.10%		0.10%
Fair value inputs, Recovery rate	14.00%		15.00%
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Corporate Bonds [Member] | Discounted Cash Flow [Member] | Maximum [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Probability of default	14.00%		14.20%
Fair value inputs, Recovery rate	68.40%		100.00%
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Corporate Bonds [Member] | Discounted Cash Flow [Member] | Weighted Average [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Probability of default	0.90%	[2]	4.20%	[2]
Fair value inputs, Recovery rate	40.70%	[2]	44.90%	[2]
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Corporate Bonds [Member] | Monte Carlo Method [Member]	'		'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'		'
Trading securities and Investment securities at fair value	269	[1]	1,986	[1]
Significant unobservable inputs	'		'
Fair value inputs, Correlation between interest rates	'		63.30%
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Corporate Bonds [Member] | Monte Carlo Method [Member] | Minimum [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Correlation between interest rate and foreign exchange rate	32.60%		32.50%
Fair value inputs, Correlation between interest rates	52.20%		'
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Corporate Bonds [Member] | Monte Carlo Method [Member] | Maximum [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Correlation between interest rate and foreign exchange rate	44.60%		37.90%
Fair value inputs, Correlation between interest rates	59.80%		'
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Corporate Bonds [Member] | Monte Carlo Method [Member] | Weighted Average [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Correlation between interest rate and foreign exchange rate	36.90%	[2]	35.20%	[2]
Fair value inputs, Correlation between interest rates	59.50%	[2]	63.30%	[2]
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Corporate Bonds [Member] | Internal Model [Member]	'		'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'		'
Trading securities and Investment securities at fair value	9,064	[1]	9,059	[1]
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Corporate Bonds [Member] | Internal Model [Member] | Minimum [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Liquidity premium	1.50%		1.50%
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Corporate Bonds [Member] | Internal Model [Member] | Maximum [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Liquidity premium	2.50%		2.50%
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Corporate Bonds [Member] | Internal Model [Member] | Weighted Average [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Liquidity premium	2.30%	[2]	2.30%	[2]
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Residential Mortgage-backed Securities, Commercial Mortgage-backed Securities and Asset-backed Securities [Member] | Discounted Cash Flow [Member]	'		'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'		'
Trading securities and Investment securities at fair value	90,420	[1]	72,640	[1]
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Residential Mortgage-backed Securities, Commercial Mortgage-backed Securities and Asset-backed Securities [Member] | Discounted Cash Flow [Member] | Minimum [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Discount factor	'		1.00%
Fair value inputs, Prepayment rate	'		6.20%
Fair value inputs, Probability of default	4.60%		0.00%
Fair value inputs, Recovery rate	65.00%		0.00%
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Residential Mortgage-backed Securities, Commercial Mortgage-backed Securities and Asset-backed Securities [Member] | Discounted Cash Flow [Member] | Maximum [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Discount factor	'		1.20%
Fair value inputs, Prepayment rate	'		14.80%
Fair value inputs, Probability of default	5.10%		5.20%
Fair value inputs, Recovery rate	76.00%		76.00%
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Residential Mortgage-backed Securities, Commercial Mortgage-backed Securities and Asset-backed Securities [Member] | Discounted Cash Flow [Member] | Weighted Average [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Discount factor	'		1.10%	[2]
Fair value inputs, Prepayment rate	'		8.80%	[2]
Fair value inputs, Probability of default	5.00%	[2]	4.90%	[2]
Fair value inputs, Recovery rate	68.00%	[2]	65.40%	[2]
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Residential Mortgage-backed Securities, Commercial Mortgage-backed Securities and Asset-backed Securities [Member] | Internal Model [Member]	'		'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'		'
Trading securities and Investment securities at fair value	430,386	[1]	289,398	[1]
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Residential Mortgage-backed Securities, Commercial Mortgage-backed Securities and Asset-backed Securities [Member] | Internal Model [Member] | Minimum [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Asset correlations	11.00%		11.00%
Fair value inputs, Discount factor	1.50%		1.00%
Fair value inputs, Prepayment rate	4.50%		3.90%
Fair value inputs, Probability of default	0.00%		0.00%
Fair value inputs, Recovery rate	54.50%		53.60%
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Residential Mortgage-backed Securities, Commercial Mortgage-backed Securities and Asset-backed Securities [Member] | Internal Model [Member] | Maximum [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Asset correlations	14.00%		14.00%
Fair value inputs, Discount factor	5.80%		4.80%
Fair value inputs, Prepayment rate	44.80%		38.30%
Fair value inputs, Probability of default	88.80%		84.60%
Fair value inputs, Recovery rate	79.20%		69.80%
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Residential Mortgage-backed Securities, Commercial Mortgage-backed Securities and Asset-backed Securities [Member] | Internal Model [Member] | Weighted Average [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Asset correlations	13.70%	[2]	13.50%	[2]
Fair value inputs, Discount factor	1.90%	[2]	1.50%	[2]
Fair value inputs, Prepayment rate	40.90%	[2]	32.60%	[2]
Fair value inputs, Probability of default	'	[2],[3]	'	[2],[3]
Fair value inputs, Recovery rate	77.70%	[2]	67.50%	[2]
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Other Debt Securities [Member] | Discounted Cash Flow [Member]	'		'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'		'
Trading securities and Investment securities at fair value	32,565	[1]	29,526	[1]
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Other Debt Securities [Member] | Discounted Cash Flow [Member] | Minimum [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Liquidity premium	0.60%		0.50%
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Other Debt Securities [Member] | Discounted Cash Flow [Member] | Maximum [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Liquidity premium	0.80%		0.80%
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Other Debt Securities [Member] | Discounted Cash Flow [Member] | Weighted Average [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Liquidity premium	0.80%	[2]	0.80%	[2]
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Other Debt Securities [Member] | Return On Equity Method [Member]	'		'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'		'
Trading securities and Investment securities at fair value	182,613	[1]	104,957	[1]
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Other Debt Securities [Member] | Return On Equity Method [Member] | Minimum [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Probability of default	0.00%		0.00%
Fair value inputs, Recovery rate	25.00%		25.00%
Fair value inputs, Market-required return on capital	8.00%		15.00%
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Other Debt Securities [Member] | Return On Equity Method [Member] | Maximum [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Probability of default	25.00%		8.00%
Fair value inputs, Recovery rate	90.00%		90.00%
Fair value inputs, Market-required return on capital	10.00%		17.00%
Level 3 [Member] | Trading Securities And Investment Securities [Member] | Other Debt Securities [Member] | Return On Equity Method [Member] | Weighted Average [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Probability of default	0.70%	[2]	0.60%	[2]
Fair value inputs, Recovery rate	66.90%	[2]	64.80%	[2]
Fair value inputs, Market-required return on capital	9.70%	[2]	16.50%	[2]
Level 3 [Member] | Trading Account Assets, Trading Derivatives [Member] | Interest Rate Contracts [Member] | Option Model [Member]	'		'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'		'
Trading derivatives-net at fair value	12,366	[1]	-2,533	[1]
Level 3 [Member] | Trading Account Assets, Trading Derivatives [Member] | Interest Rate Contracts [Member] | Option Model [Member] | Minimum [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Prepayment rate	'		0.00%
Fair value inputs, Probability of default	0.00%		0.30%
Fair value inputs, Correlation between interest rate and foreign exchange rate	31.20%		32.50%
Fair value inputs, Correlation between interest rates	22.80%		-0.10%
Fair value inputs, Recovery rate	40.00%		40.00%
Fair value inputs, Volatility	27.10%		29.10%
Level 3 [Member] | Trading Account Assets, Trading Derivatives [Member] | Interest Rate Contracts [Member] | Option Model [Member] | Maximum [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Prepayment rate	'		2.30%
Fair value inputs, Probability of default	14.00%		12.50%
Fair value inputs, Correlation between interest rate and foreign exchange rate	48.30%		60.20%
Fair value inputs, Correlation between interest rates	99.40%		97.60%
Fair value inputs, Recovery rate	47.00%		51.00%
Fair value inputs, Volatility	39.50%		58.30%
Level 3 [Member] | Trading Account Assets, Trading Derivatives [Member] | Foreign Exchange Contracts [Member] | Option Model [Member]	'		'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'		'
Trading derivatives-net at fair value	-7,038	[1]	-16,806	[1]
Level 3 [Member] | Trading Account Assets, Trading Derivatives [Member] | Foreign Exchange Contracts [Member] | Option Model [Member] | Minimum [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Probability of default	0.10%		0.40%
Fair value inputs, Correlation between interest rate and foreign exchange rate	31.20%		22.20%
Fair value inputs, Correlation between interest rates	38.80%		28.20%
Fair value inputs, Correlation between underlying assets	49.90%		44.10%
Fair value inputs, Recovery rate	40.00%		40.00%
Level 3 [Member] | Trading Account Assets, Trading Derivatives [Member] | Foreign Exchange Contracts [Member] | Option Model [Member] | Maximum [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Probability of default	14.00%		14.20%
Fair value inputs, Correlation between interest rate and foreign exchange rate	58.70%		66.30%
Fair value inputs, Correlation between interest rates	78.70%		80.60%
Fair value inputs, Correlation between underlying assets	85.00%		82.80%
Fair value inputs, Recovery rate	47.00%		51.00%
Level 3 [Member] | Trading Account Assets, Trading Derivatives [Member] | Equity Contracts [Member] | Option Model [Member]	'		'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'		'
Trading derivatives-net at fair value	4,548	[1]	1,381	[1]
Level 3 [Member] | Trading Account Assets, Trading Derivatives [Member] | Equity Contracts [Member] | Option Model [Member] | Minimum [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Correlation between interest rate and equity	24.90%		10.60%
Level 3 [Member] | Trading Account Assets, Trading Derivatives [Member] | Equity Contracts [Member] | Option Model [Member] | Maximum [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Correlation between interest rate and equity	49.00%		52.00%
Level 3 [Member] | Trading Account Assets, Trading Derivatives [Member] | Credit Derivatives [Member] | Option Model [Member]	'		'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'		'
Trading derivatives-net at fair value	-1,347	[1]	-1,987	[1]
Level 3 [Member] | Trading Account Assets, Trading Derivatives [Member] | Credit Derivatives [Member] | Option Model [Member] | Minimum [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Correlation between underlying assets	11.40%		11.60%
Fair value inputs, Recovery rate	37.00%		20.00%
Level 3 [Member] | Trading Account Assets, Trading Derivatives [Member] | Credit Derivatives [Member] | Option Model [Member] | Maximum [Member]	'		'
Significant unobservable inputs	'		'
Fair value inputs, Correlation between underlying assets	87.30%		88.20%
Fair value inputs, Recovery rate	37.00%		36.80%
[1]	The fair value as of March 31, 2013 and 2014 excludes the fair value of investments valued using vendor prices.
[2]	Weighted averages are calculated by weighting each input by the relative fair value of the respective financial instruments.
[3]	See "Probability of default" in "Sensitivity to and range of unobservable inputs".

Fair_Value_Carrying_Value_Of_A

Fair Value (Carrying Value Of Assets Measured At Fair Value On Nonrecurring Basis By Level) (Detail) (Fair Value, Measurements, Nonrecurring [Member], JPY ¥)	Mar. 31, 2014		Mar. 31, 2013
In Millions, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]	'		'
Investment securities	¥ 5,469	[1]	¥ 6,466	[1]
Loans	331,101		381,577
Loans, Loans held for sale	7,439		4,104
Loans, Collateral dependent loans	323,662		377,473
Premises and equipment	6,264		8,938
Intangible assets	228		549
Other assets	86,132		33,445
Other assets, Investments in equity method investees	83,873	[1]	28,856	[1]
Other assets, Other	2,259		4,589
Assets at fair value, Total	429,194		430,975
Investment securities valued at net asset value	3,483		4,354
Unfunded commitments related to investment securities valued at net asset value	864		1,603
Level 1 [Member]	'		'
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]	'		'
Loans	11,510		11,757
Loans, Collateral dependent loans	11,510		11,757
Other assets	15,138		17,105
Other assets, Investments in equity method investees	15,138	[1]	17,105	[1]
Assets at fair value, Total	26,648		28,862
Level 2 [Member]	'		'
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]	'		'
Loans	15,834		18,236
Loans, Loans held for sale	549		'
Loans, Collateral dependent loans	15,285		18,236
Other assets	60,833		'
Other assets, Investments in equity method investees	60,833	[1]	'
Assets at fair value, Total	76,667		18,236
Level 3 [Member]	'		'
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]	'		'
Investment securities	5,469	[1]	6,466	[1]
Loans	303,757		351,584
Loans, Loans held for sale	6,890		4,104
Loans, Collateral dependent loans	296,867		347,480
Premises and equipment	6,264		8,938
Intangible assets	228		549
Other assets	10,161		16,340
Other assets, Investments in equity method investees	7,902	[1]	11,751	[1]
Other assets, Other	2,259		4,589
Assets at fair value, Total	¥ 325,879		¥ 383,877
[1]	Includes investments valued at net asset value of ¥4,354 million and ¥3,483 million at March 31, 2013 and 2014, respectively. The unfunded commitments related to these investments are ¥1,603 million and ¥864 million at March 31, 2013 and 2014, respectively. These investments are private equity funds.

Fair_Value_Losses_Gains_Record

Fair Value (Losses (Gains) Recorded As A Result Of Nonrecurring Changes In Fair Value) (Detail) (Fair Value, Measurements, Nonrecurring [Member], JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]	'	'
Losses (Gains) on change in fair value	¥ 118,681	¥ 120,559
Investment Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]	'	'
Losses (Gains) on change in fair value	4,113	2,387
Loans [Member]	'	'
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]	'	'
Losses (Gains) on change in fair value	58,660	92,438
Loans [Member] | Loans Held For Sale [Member]	'	'
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]	'	'
Losses (Gains) on change in fair value	106	380
Loans [Member] | Collateral Dependent Loans [Member]	'	'
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]	'	'
Losses (Gains) on change in fair value	58,554	92,058
Premises And Equipment [Member]	'	'
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]	'	'
Losses (Gains) on change in fair value	13,899	5,536
Intangible Assets [Member]	'	'
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]	'	'
Losses (Gains) on change in fair value	312	3,378
Goodwill [Member]	'	'
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]	'	'
Losses (Gains) on change in fair value	7,792	'
Other Assets [Member]	'	'
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]	'	'
Losses (Gains) on change in fair value	33,905	16,820
Other Assets [Member] | Investments in Equity Method Investees [Member]	'	'
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]	'	'
Losses (Gains) on change in fair value	32,824	14,635
Other Assets [Member] | Other [Member]	'	'
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]	'	'
Losses (Gains) on change in fair value	¥ 1,081	¥ 2,185

Fair_Value_Gains_Losses_Relate

Fair Value (Gains (Losses) Related To Instruments For Which Fair Value Option Was Elected) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Gains (Losses) on changes in fair value, Assets	¥ 1,790,795		¥ 2,495,825
Gains (Losses) on changes in fair value, Liabilities	91,941		23,639
Trading Account Profits (Losses) [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Gains (Losses) on changes in fair value, Assets	-226,516		309,922
Gains (Losses) on changes in fair value, Liabilities	91,941		23,639
Foreign Exchange Gains (Losses) [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Gains (Losses) on changes in fair value, Assets	2,017,311		2,185,903
Receivables Under Resale Agreements [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Gains (Losses) on changes in fair value, Assets	'		-1,436	[1]
Receivables Under Resale Agreements [Member] | Trading Account Profits (Losses) [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Gains (Losses) on changes in fair value, Assets	'		-1,436	[1]
Trading Account Securities [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Gains (Losses) on changes in fair value, Assets	1,791,326		2,497,730
Trading Account Securities [Member] | Trading Account Profits (Losses) [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Gains (Losses) on changes in fair value, Assets	-225,985		311,827
Trading Account Securities [Member] | Foreign Exchange Gains (Losses) [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Gains (Losses) on changes in fair value, Assets	2,017,311		2,185,903
Other Assets [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Gains (Losses) on changes in fair value, Assets	-531		-469
Other Assets [Member] | Trading Account Profits (Losses) [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Gains (Losses) on changes in fair value, Assets	-531		-469
Other Short-Term Borrowings [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Gains (Losses) on changes in fair value, Liabilities	4,064	[1]	1,542	[1]
Other Short-Term Borrowings [Member] | Trading Account Profits (Losses) [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Gains (Losses) on changes in fair value, Liabilities	4,064	[1]	1,542	[1]
Long-Term Debt [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Gains (Losses) on changes in fair value, Liabilities	87,877	[1]	22,097	[1]
Long-Term Debt [Member] | Trading Account Profits (Losses) [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Gains (Losses) on changes in fair value, Liabilities	¥ 87,877	[1]	¥ 22,097	[1]
[1]	Change in value attributable to the instrument-specific credit risk related to those financial assets and liabilities are not material.

Fair_Value_Differences_Between

Fair Value (Differences Between Aggregate Fair Value And Aggregate Remaining Contractual Principal Balance Outstanding) (Detail) (JPY ¥)	Mar. 31, 2014	Mar. 31, 2013
In Millions, unless otherwise specified
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Remaining aggregate contractual amounts outstanding, Financial assets	¥ 2,000	¥ 3,000
Fair value, Financial assets	2,000	3,006
Fair value over (under) remaining aggregate contractual amounts outstanding, Financial assets	'	6
Remaining aggregate contractual amounts outstanding, Financial liabilities	728,385	650,382
Fair value, Financial liabilities	687,927	564,845
Fair value over (under) remaining aggregate contractual amounts outstanding, Financial liabilities	-40,458	-85,537
Other Assets [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Remaining aggregate contractual amounts outstanding, Financial assets	2,000	3,000
Fair value, Financial assets	2,000	3,006
Fair value over (under) remaining aggregate contractual amounts outstanding, Financial assets	'	6
Long-Term Debt [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Remaining aggregate contractual amounts outstanding, Financial liabilities	728,385	650,382
Fair value, Financial liabilities	687,927	564,845
Fair value over (under) remaining aggregate contractual amounts outstanding, Financial liabilities	¥ (40,458)	¥ (85,537)

Fair_Value_Summary_Of_Carrying

Fair Value (Summary Of Carrying Amounts And Estimated Fair Values Of Financial Instruments Not Carried At Fair Value On Balance Sheet By Level) (Detail) (JPY ¥)	Mar. 31, 2014		Mar. 31, 2013
In Millions, unless otherwise specified
Carrying Amount [Member] | Deposits [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	¥ 162,529,000		¥ 148,230,000
Carrying Amount [Member] | Deposits [Member] | Non-Interest-Bearing [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	21,123,000		18,810,000
Carrying Amount [Member] | Deposits [Member] | Interest-Bearing [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	141,406,000		129,420,000
Carrying Amount [Member] | Call Money And Funds Purchased [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	3,417,000		4,011,000
Carrying Amount [Member] | Payable Under Repurchased Agreements [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	21,268,000		15,700,000
Carrying Amount [Member] | Payable Under Securities Lending Transactions [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	5,521,000		3,993,000
Carrying Amount [Member] | Due To Trust Account [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	750,000		633,000
Carrying Amount [Member] | Other Short-Term Borrowings [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	11,077,000		11,604,000
Carrying Amount [Member] | Long-Term Debt [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	13,823,000		11,622,000
Carrying Amount [Member] | Other Financial Liabilities [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	5,123,000		4,753,000
Carrying Amount [Member] | Cash And Due From Banks [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	3,689,000		3,619,000
Carrying Amount [Member] | Interest-Earning Deposits In Other Banks [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	20,501,000		8,112,000
Carrying Amount [Member] | Call Loans And Funds Sold [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	919,000		619,000
Carrying Amount [Member] | Receivables Under Resale Agreements [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	7,300,000		5,660,000
Carrying Amount [Member] | Receivable Under Securities Borrowing Transactions [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	4,210,000		2,615,000
Carrying Amount [Member] | Investment Securities [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	2,870,000	[1]	2,492,000	[1]
Carrying Amount [Member] | Loans, Net Of Allowance For Credit Losses [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	109,182,000	[2]	97,254,000	[2]
Carrying Amount [Member] | Other Financial Assets [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	5,832,000		5,132,000
Estimated Fair Value [Member] | Deposits [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	162,570,000		148,290,000
Estimated Fair Value [Member] | Deposits [Member] | Level 2 [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	162,570,000		148,290,000
Estimated Fair Value [Member] | Deposits [Member] | Non-Interest-Bearing [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	21,123,000		18,810,000
Estimated Fair Value [Member] | Deposits [Member] | Non-Interest-Bearing [Member] | Level 2 [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	21,123,000		18,810,000
Estimated Fair Value [Member] | Deposits [Member] | Interest-Bearing [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	141,447,000		129,480,000
Estimated Fair Value [Member] | Deposits [Member] | Interest-Bearing [Member] | Level 2 [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	141,447,000		129,480,000
Estimated Fair Value [Member] | Call Money And Funds Purchased [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	3,417,000		4,011,000
Estimated Fair Value [Member] | Call Money And Funds Purchased [Member] | Level 2 [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	3,417,000		4,011,000
Estimated Fair Value [Member] | Payable Under Repurchased Agreements [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	21,268,000		15,700,000
Estimated Fair Value [Member] | Payable Under Repurchased Agreements [Member] | Level 2 [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	21,268,000		15,700,000
Estimated Fair Value [Member] | Payable Under Securities Lending Transactions [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	5,521,000		3,993,000
Estimated Fair Value [Member] | Payable Under Securities Lending Transactions [Member] | Level 2 [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	5,521,000		3,993,000
Estimated Fair Value [Member] | Due To Trust Account [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	750,000		633,000
Estimated Fair Value [Member] | Due To Trust Account [Member] | Level 2 [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	750,000		633,000
Estimated Fair Value [Member] | Other Short-Term Borrowings [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	11,077,000		11,604,000
Estimated Fair Value [Member] | Other Short-Term Borrowings [Member] | Level 2 [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	11,077,000		11,604,000
Estimated Fair Value [Member] | Long-Term Debt [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	14,118,000		11,980,000
Estimated Fair Value [Member] | Long-Term Debt [Member] | Level 2 [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	14,118,000		11,969,000
Estimated Fair Value [Member] | Long-Term Debt [Member] | Level 3 [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	'		11,000
Estimated Fair Value [Member] | Other Financial Liabilities [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	5,123,000		4,753,000
Estimated Fair Value [Member] | Other Financial Liabilities [Member] | Level 2 [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial liabilities	5,123,000		4,753,000
Estimated Fair Value [Member] | Cash And Due From Banks [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	3,689,000		3,619,000
Estimated Fair Value [Member] | Cash And Due From Banks [Member] | Level 1 [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	3,689,000		3,619,000
Estimated Fair Value [Member] | Interest-Earning Deposits In Other Banks [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	20,501,000		8,112,000
Estimated Fair Value [Member] | Interest-Earning Deposits In Other Banks [Member] | Level 2 [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	20,501,000		8,112,000
Estimated Fair Value [Member] | Call Loans And Funds Sold [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	919,000		619,000
Estimated Fair Value [Member] | Call Loans And Funds Sold [Member] | Level 2 [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	919,000		619,000
Estimated Fair Value [Member] | Receivables Under Resale Agreements [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	7,300,000		5,660,000
Estimated Fair Value [Member] | Receivables Under Resale Agreements [Member] | Level 2 [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	7,300,000		5,660,000
Estimated Fair Value [Member] | Receivable Under Securities Borrowing Transactions [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	4,210,000		2,615,000
Estimated Fair Value [Member] | Receivable Under Securities Borrowing Transactions [Member] | Level 2 [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	4,210,000		2,615,000
Estimated Fair Value [Member] | Investment Securities [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	2,908,000	[1]	2,778,000	[1]
Estimated Fair Value [Member] | Investment Securities [Member] | Level 1 [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	220,000	[1]	272,000	[1]
Estimated Fair Value [Member] | Investment Securities [Member] | Level 2 [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	701,000	[1]	495,000	[1]
Estimated Fair Value [Member] | Investment Securities [Member] | Level 3 [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	1,987,000	[1]	2,011,000	[1]
Estimated Fair Value [Member] | Loans, Net Of Allowance For Credit Losses [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	110,577,000	[2]	98,729,000	[2]
Estimated Fair Value [Member] | Loans, Net Of Allowance For Credit Losses [Member] | Level 1 [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	11,000	[2]	12,000	[2]
Estimated Fair Value [Member] | Loans, Net Of Allowance For Credit Losses [Member] | Level 2 [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	307,000	[2]	284,000	[2]
Estimated Fair Value [Member] | Loans, Net Of Allowance For Credit Losses [Member] | Level 3 [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	110,259,000	[2]	98,433,000	[2]
Estimated Fair Value [Member] | Other Financial Assets [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	5,832,000		5,132,000
Estimated Fair Value [Member] | Other Financial Assets [Member] | Level 2 [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Financial assets	¥ 5,832,000		¥ 5,132,000
[1]	Includes impaired securities 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.
[2]	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.

Stock_Based_Compensation_Narra

Stock Based Compensation (Narrative) (Detail) (JPY ¥)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	MUFG, BTMU, MUTB, MUSHD And MUMSS Stock Acquisition Right [Member]	MUFG, BTMU, MUTB, MUSHD And MUMSS Stock Acquisition Right [Member]	MUFG, BTMU, MUTB, MUSHD And MUMSS Stock Acquisition Right [Member]	MUAH Stock Bonus Plan [Member]	MUAH Stock Bonus Plan [Member]	MUAH Stock Bonus Plan [Member]	MUAH Stock Bonus Plan [Member]
Stock-Based Compensation [Line Items]	'	'	'	'	'	'	'
Frequency of the Stock Acquisition Rights normally issued and granted	'once a year	'once a year	'	'	'	'	'
Number of shares to be issued or transferred on exercise of each Stock Acquisition Right	100	'	'	'	'	'	'
Contractual term of the Stock Acquisition Rights, years	'30 years	'	'	'	'	'	'
Exercise price per share	¥ 1	'	'	'	'	'	'
Weighted-average grant date fair value of Stock Acquisition Right, per 100 shares	¥ 61,100	¥ 33,100	¥ 33,700	'	'	'	'
Compensation costs related to the Stock Acquisition Right Recognized	2,069,000,000	2,862,000,000	2,771,000,000	'	2,051,000,000	1,437,000,000	1,198,000,000
Tax benefit for compensation cost for share-based payment arrangements	737,000,000	1,088,000,000	1,127,000,000	'	781,000,000	559,000,000	479,000,000
Total unrecognized compensation cost	253,000,000	'	'	'	2,846,000,000	2,251,000,000	1,710,000,000
Number of months for total unrecognized compensation cost related to the stock acquisition to be recognized	'3 months	'	'	'	'	'	'
Cash received from exercise of the Stock Acquisition Right	5,000,000	4,000,000	4,000,000	'	'	'	'
Actual tax benefit realized for the tax deductions form exercise of the Stock Acquisition Right	¥ 789,000,000	¥ 675,000,000	¥ 821,000,000	'	'	'	'
Number of years awards become fully vested from the grant date under Stock Bonus Plan	'	'	'	'3 years	'	'	'

Stock_Based_Compensation_Summa

Stock Based Compensation (Summary Of Stock Acquisition Rights Transactions) (Detail) (MUFG, BTMU, MUTB, MUSHD And MUMSS Stock Acquisition Right [Member], JPY ¥)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2014
MUFG, BTMU, MUTB, MUSHD And MUMSS Stock Acquisition Right [Member]	'
Stock-Based Compensation [Line Items]	'
Number of shares, Outstanding, Beginning of fiscal year	23,574,800
Number of shares, Outstanding, Granted	2,951,500
Number of shares, Outstanding, Exercised	-5,440,700
Number of shares, Outstanding, Forfeited or Expired	-45,700
Number of shares, Outstanding, End of fiscal year	21,039,900
Number of shares, Exercisable, End of fiscal year	'
Weighted-average exercise price, Outstanding, Beginning of fiscal year	¥ 1
Weighted-average exercise price, Outstanding, Granted	¥ 1
Weighted-average exercise price, Outstanding, Exercised	¥ 1
Weighted-average exercise price, Outstanding, Forfeited or Expired	¥ 1
Weighted-average exercise price, Outstanding, End of fiscal year	¥ 1
Weighted-average exercise price, Exercisable, End of fiscal year	'
Weighted-average remaining contractual term, Outstanding, in years, End of fiscal year	'27 years 4 months 17 days
Weighted-average remaining contractual term, Exercisable, in years, End of fiscal year	'
Aggregate intrinsic value, Outstanding, End of fiscal year	¥ 11,909
Aggregate intrinsic value, Exercisable, End of fiscal year	'

Stock_Based_Compensation_Fair_

Stock Based Compensation (Fair Value Assumption Of Stock Acquisition Rights) (Detail) (MUFG, BTMU, MUTB, MUSHD And MUMSS Stock Acquisition Right [Member])	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
MUFG, BTMU, MUTB, MUSHD And MUMSS Stock Acquisition Right [Member]	'	'	'
Stock-Based Compensation [Line Items]	'	'	'
Risk-free interest rate	0.22%	0.11%	0.29%
Expected volatility	30.16%	40.48%	44.96%
Expected term	'4 years	'4 years	'4 years
Expected dividend yield	1.96%	3.18%	3.13%

Stock_Based_Compensation_Summa1

Stock Based Compensation (Summary Of MUAH's Stock Bonus Plan) (Detail) (MUAH Stock Bonus Plan [Member], USD $)

0 Months Ended

Jul. 15, 2013

Apr. 15, 2013

Jul. 15, 2012

Apr. 15, 2012

Jul. 15, 2011

Apr. 15, 2011

Jul. 15, 2013

Apr. 15, 2013

Jul. 15, 2012

Apr. 15, 2012

Jul. 15, 2011

Apr. 15, 2011

MUAH Stock Bonus Plan [Member]

'

'

'

'

'

'

'

'

'

'

'

'

Stock-Based Compensation [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Units Granted

'

'

'

'

'

'

78,725

3,656,340

74,175

4,816,795

180,740

4,754,105

Fair Value of Stock

'

'

'

'

'

'

$6.67

$6.66

$4.72

$4.78

$4.94

$4.69

Vesting Duration, Years

'3 years

'3 years

'3 years

'3 years

'3 years

'3 years

'

'

'

'

'

'

Pro-rata Vesting Date

'--07-15

'--04-15

'--07-15

'--04-15

'--07-15

'--04-15

'

'

'

'

'

'

Stock_Based_Compensation_Rollf

Stock Based Compensation (Rollforward Of MUAH's Restricted Stock Units Under Stock Bonus Plan) (Detail) (MUAH Stock Bonus Plan [Member])	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
MUAH Stock Bonus Plan [Member]	'	'
Stock-Based Compensation [Line Items]	'	'
Units outstanding, beginning of fiscal year	8,857,884	7,138,334
Activity during the year, Granted	3,735,065	4,890,970
Activity during the year, Vested	-4,325,661	-2,920,392
Activity during the year, Forfeited	-416,271	-251,028
Units outstanding, end of fiscal year	7,851,017	8,857,884

Stock_Based_Compensation_Summa2

Stock Based Compensation (Summary Of MUAH's Compensation Costs) (Detail) (MUAH Stock Bonus Plan [Member], JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
MUAH Stock Bonus Plan [Member]	'	'	'
Stock-Based Compensation [Line Items]	'	'	'
Compensation costs	¥ 2,051	¥ 1,437	¥ 1,198
Tax benefit	781	559	479
Unrecognized compensation costs	¥ 2,846	¥ 2,251	¥ 1,710

Parent_Company_Only_Financial_2

Parent Company Only Financial Information (Narrative) (Detail) (Under The Company Law [Member], BTMU And MUTB [Member], JPY ¥)	Mar. 31, 2014
In Millions, unless otherwise specified
Under The Company Law [Member] | BTMU And MUTB [Member]	'
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	¥ 5,511,969

Parent_Company_Only_Financial_3

Parent Company Only Financial Information (Condensed Balance Sheets) (Detail) (JPY ¥)	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
In Millions, unless otherwise specified
Assets:	'	'	'
Total assets	¥ 253,661,077	¥ 230,559,276	¥ 215,202,514
LIABILITIES AND EQUITY	'	'	'
Total liabilities	240,909,633	219,617,296	'
Total shareholders' equity	12,205,040	10,608,795	'
Total liabilities and equity	253,661,077	230,559,276	'
MUFG [Member]	'	'	'
Assets:	'	'	'
Cash and interest-earning deposits with banking subsidiaries	130,338	127,303	'
Investments in subsidiaries and affiliated companies	14,439,803	12,849,434	'
Investments in subsidiaries and affiliated companies, Banking subsidiaries	11,104,470	10,394,347	'
Investments in subsidiaries and affiliated companies, Non-banking subsidiaries and affiliated companies	3,335,333	2,455,087	'
Other assets	64,808	56,435	'
Total assets	14,634,949	13,033,172	'
LIABILITIES AND EQUITY	'	'	'
Short-term borrowings from banking subsidiaries	1,917,647	1,873,336	'
Long-term debt from non-banking subsidiaries and affiliated companies	384,445	384,107	'
Long-term debt	78	59	'
Other liabilities	127,739	166,875	'
Total liabilities	2,429,909	2,424,377	'
Total shareholders' equity	12,205,040	10,608,795	'
Total liabilities and equity	¥ 14,634,949	¥ 13,033,172	'

Parent_Company_Only_Financial_4

Parent Company Only Financial Information (Condensed Statements Of Income) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Income:	'	'	'
Gain on conversion rate adjustment of Morgan Stanley's convertible preferred stock	'	'	¥ 139,320
Foreign exchange gains (losses)-net	-61,755	-38,955	34,302
Expense:	'	'	'
Income before income tax expense	1,420,443	1,415,871	849,942
Income tax expense (benefit)	337,917	296,020	429,191
Net income attributable to Mitsubishi UFJ Financial Group	1,015,393	1,069,124	416,231
MUFG [Member]	'	'	'
Income:	'	'	'
Dividends from subsidiaries and affiliated companies	255,175	220,050	270,923
Dividends from subsidiaries and affiliated companies, Banking subsidiaries	207,771	184,462	241,329
Dividends from subsidiaries and affiliated companies, Non-banking subsidiaries and affiliated companies	47,404	35,588	29,594
Gain on conversion rate adjustment of Morgan Stanley's convertible preferred stock	'	'	139,320
Management fees from subsidiaries	18,922	17,154	16,708
Interest income	73	77	99
Foreign exchange gains (losses)-net	-44,544	-59,375	32,237
Other income	294	634	5,614
Total income	229,920	178,540	464,901
Expense:	'	'	'
Operating expenses	18,304	15,952	14,515
Interest expense to subsidiaries and affiliated companies	28,897	30,501	37,905
Interest expense	1,121	1,122	1,196
Other expense	591	2,620	923
Total expense	48,913	50,195	54,539
Equity in undistributed net income of subsidiaries and affiliated companies-net	793,548	937,673	55,139
Income before income tax expense	974,555	1,066,018	465,501
Income tax expense (benefit)	-40,838	-3,106	49,270
Net income attributable to Mitsubishi UFJ Financial Group	¥ 1,015,393	¥ 1,069,124	¥ 416,231

Parent_Company_Only_Financial_5

Parent Company Only Financial Information (Condensed Statements Of Cash Flows) (Detail) (JPY ¥)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities:	'	'	'
Net income attributable to Mitsubishi UFJ Financial Group	¥ 1,015,393	¥ 1,069,124	¥ 416,231
Net cash provided by (used in) operating activities	909,448	-2,164,910	592,879
Cash flows from investing activities:	'	'	'
Net decrease in interest-earning deposits with banks	-11,738,061	-1,706,642	1,344,430
Other-net	5,241	-69,120	11,462
Net cash used in investing activities	-12,401,827	-1,800,255	-10,364,250
Cash flows from financing activities:	'	'	'
Repayment of long-term debt	-2,540,895	-3,025,310	-2,263,232
Proceeds from sales of treasury stock	845	22	130
Payments to acquire treasury stock	-74	-19	-18
Dividends paid	-216,054	-187,720	-187,561
Other-net	-7,702	-9,351	-11,523
Net cash provided by financing activities	11,475,095	4,291,533	9,787,852
Net increase (decrease) in cash and cash equivalents	69,975	388,844	-395
Cash and cash equivalents at beginning of fiscal year	3,619,253	3,230,409	3,230,804
Cash and cash equivalents at end of fiscal year	3,689,228	3,619,253	3,230,409
MUFG [Member]	'	'	'
Cash flows from operating activities:	'	'	'
Net income attributable to Mitsubishi UFJ Financial Group	1,015,393	1,069,124	416,231
Adjustments and other	-790,050	-858,288	-133,368
Net cash provided by (used in) operating activities	225,343	210,836	282,863
Cash flows from investing activities:	'	'	'
Proceeds from sales and redemption of stock investment in subsidiaries and affiliated companies	'	21,160	17,371
Purchases of equity investments in subsidiaries and affiliated companies	'	-3,838	-20,000
Net decrease in interest-earning deposits with banks	1,494	8,996	18,696
Other-net	-2,788	-10,623	-7,245
Net cash used in investing activities	-1,294	15,695	8,822
Cash flows from financing activities:	'	'	'
Net increase (decrease) in short-term borrowings from subsidiaries	-4	-34,989	66,600
Repayment of long-term debt	-16	-20	-8
Repayment of long-term debt to subsidiaries and affiliated companies	'	'	-169,710
Proceeds from sales of treasury stock	2	1	3
Payments to acquire treasury stock	-46	-16	-12
Dividends paid	-216,117	-187,778	-187,616
Other-net	-2,988	-212	-1,346
Net cash provided by financing activities	-219,169	-223,014	-292,089
Net increase (decrease) in cash and cash equivalents	4,880	3,517	-404
Cash and cash equivalents at beginning of fiscal year	14,139	10,622	11,026
Cash and cash equivalents at end of fiscal year	¥ 19,019	¥ 14,139	¥ 10,622

SEC_Registered_Funding_Vehicle1

SEC Registered Funding Vehicles Issuing Non-Dilutive Preferred Securities (Narrative) (Detail)	Mar. 31, 2014	Mar. 31, 2013	Mar. 17, 2006	Mar. 17, 2006	Mar. 17, 2006	Mar. 17, 2006	Mar. 17, 2006	Mar. 17, 2006	Jul. 25, 2011	Mar. 17, 2006
	JPY (¥)	JPY (¥)	Non-Cumulative Preferred Stock [Member]	MUFG Capital Finance 1 [Member]	MUFG Capital Finance 1 [Member]	MUFG Capital Finance 2 [Member]	MUFG Capital Finance 2 [Member]	MUFG Capital Finance 3 [Member]	MUFG Capital Finance 3 [Member]	MUFG Capital Finance 3 [Member]
			USD ($)	Non-Cumulative Preferred Stock [Member]	Non-Cumulative Preferred Stock [Member]	Non-Cumulative Preferred Stock [Member]	Non-Cumulative Preferred Stock [Member]	Non-Cumulative Preferred Stock [Member]	Non-Cumulative Preferred Stock [Member]	Non-Cumulative Preferred Stock [Member]
					USD ($)		EUR (€)		JPY (¥)	JPY (¥)
Wholly Owned Funding Vehicles [Line Items]	'	'	'	'	'	'	'	'	'	'
Preferred stock, value	¥ 442,100,000,000	¥ 442,100,000,000	'	'	$2,300,000,000	'	€ 750,000,000	'	'	¥ 120,000,000,000
Preferred stock, percentage of dividend	'	'	'	6.35%	'	4.85%	'	2.68%	'	'
Preferred stock, total net proceeds before expenses	'	'	4,170,000,000	'	'	'	'	'	'	'
Redemption value of non-cumulative and non-dilutive perpetual preferred securities issued by a special purpose company	'	'	'	'	'	'	'	'	¥ 120,000,000,000	'

Subsequent_Events_Narrative_De

Subsequent Events (Narrative) (Detail) (Subsequent Event [Member], JPY ¥)	0 Months Ended				0 Months Ended		0 Months Ended
In Millions, except Share data, unless otherwise specified	Jul. 15, 2014	Jun. 27, 2014	Apr. 01, 2014	Jun. 27, 2014	Jun. 27, 2014	Jun. 27, 2014	Jun. 27, 2014	Jun. 27, 2014
	MUFG BTMU MUTB MUSHD MUMSS Stock Acquisition Rights [Member]	Preferred Stock [Member]	Preferred Stock [Member]	Preferred Stock [Member]	Preferred Stock [Member]	Preferred Stock [Member]	Common Stock [Member]	Common Stock [Member]
	July 2014 [Member]	Preferred Stock, Class 5 [Member]	Preferred Stock, Class 5 [Member]	Preferred Stock, Class 5 [Member]	Preferred Stock, Class 11 [Member]	Preferred Stock, Class 11 [Member]
Acquisition and Cancellation of First Series of Class 5 Preferred Stock:	'	'	'	'	'	'	'	'
Stock repurchased and retired during period, shares	'	'	156,000,000	'	'	'	'	'
Stock acquisition price, per share	'	'	¥ 2,500	'	'	'	'	'
Stock repurchased and retired during period, value	'	'	¥ 390,000	'	'	'	'	'
Approval Of Dividends:	'	'	'	'	'	'	'	'
Dividends payable, date of record	'	31-Mar-14	'	'	31-Mar-14	'	31-Mar-14	'
Dividends payable, amount per share	'	'	'	¥ 57.5	'	¥ 2.65	'	¥ 9
Dividends payable, total amount	'	'	'	¥ 8,970	'	¥ 0	'	¥ 127,474
Stock Acquisition Rights:	'	'	'	'	'	'	'	'
Aggregate amount of share of MUFG's common stock to be acquired with stock acquisition right	3,019,400	'	'	'	'	'	'	'
Exercise price of stock acquisition rights	¥ 1	'	'	'	'	'	'	'
Last exercisable date of stock acquisition rights	14-Jul-44	'	'	'	'	'	'	'