v3.26.1
Parent Company Only Financial Information (Condensed Statements of Income) (Detail) - JPY (¥)
¥ in Millions
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Income:      
Foreign exchange gains (losses)—net ¥ (636,227) ¥ 153,959 ¥ (296,487)
Trading account losses—net (650,573) 32,262 (703,913)
Expense:      
Operating expenses 3,625,900 3,242,600 2,918,800
Income before income tax expense 2,509,495 1,795,576 1,878,226
Income tax expense 625,591 527,938 500,657
Net income before attribution of noncontrolling interests 1,883,904 1,267,638 1,377,569
MUFG:      
Income:      
Foreign exchange gains (losses)—net (153) (2,700) 451
Trading account losses—net (17,045) (50,367) (40,379)
Other income 15,472 16,242 15,374
Total income 1,846,839 1,679,875 1,155,910
Expense:      
Operating expenses 56,296 47,706 47,600
Interest expense 368,731 351,368 355,781
Other expense 3,803 1,804 6,229
Total expense 453,940 418,960 425,283
Equity in undistributed net income of subsidiaries and affiliated companies—net 348,297 6,408 589,812
Income before income tax expense 1,741,196 1,267,323 1,320,439
Income tax expense 11,837 390 (5,430)
Net income before attribution of noncontrolling interests 1,729,359 1,266,933 1,325,869
MUFG: | Subsidiaries and affiliated companies      
Income:      
Dividends from subsidiaries and affiliated companies 1,411,925 1,306,837 774,211
Expense:      
Interest expense 25,110 18,082 15,673
MUFG: | Banking subsidiaries      
Income:      
Dividends from subsidiaries and affiliated companies 1,102,632 1,035,465 545,886
MUFG: | Non-banking subsidiaries and affiliated companies      
Income:      
Dividends from subsidiaries and affiliated companies 309,293 271,372 228,325
MUFG: | Subsidiaries      
Income:      
Management fees from subsidiaries 41,322 35,633 34,393
Interest income from subsidiaries ¥ 395,318 ¥ 374,230 ¥ 371,860