v3.25.2
Basis of Financial Statements and Summary of Significant Accounting Policies - Adjustments Condensed Consolidated Statements of Comprehensive Income (Details) - JPY (¥)
¥ in Millions
 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Statement of Comprehensive Income [Abstract]      
Net income before attribution of noncontrolling interests ¥ 1,267,638 ¥ 1,377,569 ¥ 414,561
Other comprehensive income, net of tax:      
Net unrealized gains (losses) on investment securities 26,936 44,499 (201,112)
Net unrealized losses on derivatives qualifying for cash flow hedges (1,647) (636) (5,577)
Defined benefit plans 71,316 382,855 (20,047)
Foreign currency translation adjustments 365,608 1,080,209 806,935
Total 473,474 1,462,277 598,005
Comprehensive income 1,741,112 2,839,846 1,012,566
Net income attributable to noncontrolling interests 705 51,700 32,763
Other comprehensive income attributable to noncontrolling interests 149,909 95,706 10,501
Comprehensive income attributable to Mitsubishi UFJ Financial Group ¥ 1,590,498 2,692,440 969,302
As Previously Reported      
Statement of Comprehensive Income [Abstract]      
Net income before attribution of noncontrolling interests   1,381,027 407,048
Other comprehensive income, net of tax:      
Net unrealized gains (losses) on investment securities   41,949 (202,955)
Net unrealized losses on derivatives qualifying for cash flow hedges   (505) (5,117)
Defined benefit plans   382,809 (20,331)
Foreign currency translation adjustments   1,096,700 847,705
Total   1,476,303 637,108
Comprehensive income   2,857,330 1,044,156
Net income attributable to noncontrolling interests   52,906 30,413
Other comprehensive income attributable to noncontrolling interests   99,232 19,949
Comprehensive income attributable to Mitsubishi UFJ Financial Group   2,705,192 993,794
Adjustments      
Statement of Comprehensive Income [Abstract]      
Net income before attribution of noncontrolling interests   (3,458) 7,513
Other comprehensive income, net of tax:      
Net unrealized gains (losses) on investment securities   2,550 1,843
Net unrealized losses on derivatives qualifying for cash flow hedges   (131) (460)
Defined benefit plans   46 284
Foreign currency translation adjustments   (16,491) (40,770)
Total   (14,026) (39,103)
Comprehensive income   (17,484) (31,590)
Net income attributable to noncontrolling interests   (1,206) 2,350
Other comprehensive income attributable to noncontrolling interests   (3,526) (9,448)
Comprehensive income attributable to Mitsubishi UFJ Financial Group   ¥ (12,752) ¥ (24,492)