Due to Trust Account, Short-term Borrowings and Long-term Debt (Components of Long-term Debt) (Detail) - JPY (¥) ¥ in Millions |
Mar. 31, 2025 |
Mar. 31, 2024 |
Debt Instrument [Line Items] |
|
|
Obligations under finance leases |
¥ 21,460
|
¥ 26,055
|
Total |
21,036,051
|
40,027,031
|
Debt issuance cost |
(13,644)
|
(14,212)
|
Total, after debt issuance costs |
21,022,407
|
40,012,819
|
MUFG: |
|
|
Debt Instrument [Line Items] |
|
|
Obligations under finance leases |
726
|
377
|
Total |
12,237,098
|
14,197,080
|
MUFG: | Unsubordinated debt |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
7,623,526
|
9,898,523
|
MUFG: | Unsubordinated debt | Fixed Rate Bonds I |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 6,419,433
|
7,672,722
|
MUFG: | Unsubordinated debt | Fixed Rate Bonds I | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
1.41%
|
|
MUFG: | Unsubordinated debt | Fixed Rate Bonds I | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
5.57%
|
|
MUFG: | Unsubordinated debt | Fixed Rate Bonds II |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 278,616
|
566,150
|
MUFG: | Unsubordinated debt | Fixed Rate Bonds II | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
0.85%
|
|
MUFG: | Unsubordinated debt | Fixed Rate Bonds II | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
3.56%
|
|
MUFG: | Unsubordinated debt | Fixed Rate Bonds III |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 30,561
|
41,488
|
MUFG: | Unsubordinated debt | Fixed Rate Bonds III | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
2.73%
|
|
MUFG: | Unsubordinated debt | Fixed Rate Bonds III | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
4.05%
|
|
MUFG: | Unsubordinated debt | Adjustable Rate Bonds I |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 280,900
|
545,200
|
MUFG: | Unsubordinated debt | Adjustable Rate Bonds I | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
0.25%
|
|
MUFG: | Unsubordinated debt | Adjustable Rate Bonds I | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
1.47%
|
|
MUFG: | Unsubordinated debt | Adjustable Rate Bonds II |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 324,160
|
538,692
|
MUFG: | Unsubordinated debt | Adjustable Rate Bonds II | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
0.34%
|
|
MUFG: | Unsubordinated debt | Adjustable Rate Bonds II | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
4.64%
|
|
MUFG: | Unsubordinated debt | Adjustable Rate Bonds III |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 245,000
|
245,000
|
MUFG: | Unsubordinated debt | Adjustable Rate Bonds III | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
0.91%
|
|
MUFG: | Unsubordinated debt | Adjustable Rate Bonds III | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
1.86%
|
|
MUFG: | Unsubordinated debt | Floating Rate Bonds I |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 44,856
|
249,827
|
MUFG: | Unsubordinated debt | Floating Rate Bonds I | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
5.79%
|
|
MUFG: | Unsubordinated debt | Floating Rate Bonds I | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
|
|
MUFG: | Unsubordinated debt | Floating Rate Bonds II |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 0
|
39,444
|
Interest rate, stated percentage |
5.61%
|
|
MUFG: | Subordinated debt |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 4,612,846
|
4,298,180
|
MUFG: | Subordinated debt | Fixed Rate Bonds I |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 990,959
|
937,805
|
MUFG: | Subordinated debt | Fixed Rate Bonds I | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
0.37%
|
|
MUFG: | Subordinated debt | Fixed Rate Bonds I | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
2.05%
|
|
MUFG: | Subordinated debt | Fixed Rate Bonds II |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 116,997
|
117,692
|
Interest rate, stated percentage |
8.20%
|
|
MUFG: | Subordinated debt | Adjustable Rate Bonds I |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 2,143,532
|
1,983,789
|
MUFG: | Subordinated debt | Adjustable Rate Bonds I | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
0.85%
|
|
MUFG: | Subordinated debt | Adjustable Rate Bonds I | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
2.51%
|
|
MUFG: | Subordinated debt | Adjustable Rate Bonds II |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 1,005,655
|
963,219
|
MUFG: | Subordinated debt | Adjustable Rate Bonds II | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
0.35%
|
|
MUFG: | Subordinated debt | Adjustable Rate Bonds II | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
1.57%
|
|
MUFG: | Subordinated debt | Fixed Rate Borrowings I |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 86,000
|
86,000
|
MUFG: | Subordinated debt | Fixed Rate Borrowings I | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
0.57%
|
|
MUFG: | Subordinated debt | Fixed Rate Borrowings I | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
0.79%
|
|
MUFG: | Subordinated debt | Adjustable Rate Borrowings II |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 36,000
|
34,000
|
MUFG: | Subordinated debt | Adjustable Rate Borrowings II | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
0.72%
|
|
MUFG: | Subordinated debt | Adjustable Rate Borrowings II | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
1.28%
|
|
MUFG: | Subordinated debt | Adjustable Rate Borrowings I |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 233,703
|
175,675
|
MUFG: | Subordinated debt | Adjustable Rate Borrowings I | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
0.87%
|
|
MUFG: | Subordinated debt | Adjustable Rate Borrowings I | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
2.95%
|
|
MUFG Bank: |
|
|
Debt Instrument [Line Items] |
|
|
Obligations under finance leases |
¥ 4,397
|
4,567
|
Total |
5,780,373
|
22,781,771
|
MUFG Bank: | Unsubordinated debt |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
5,262,653
|
22,174,623
|
MUFG Bank: | Unsubordinated debt | Fixed Rate Bonds I |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 8,300
|
17,200
|
MUFG Bank: | Unsubordinated debt | Fixed Rate Bonds I | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
2.34%
|
|
MUFG Bank: | Unsubordinated debt | Fixed Rate Bonds I | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
|
|
MUFG Bank: | Unsubordinated debt | Fixed Rate Bonds II |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 929,501
|
1,060,184
|
MUFG Bank: | Unsubordinated debt | Fixed Rate Bonds II | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
0.00%
|
|
MUFG Bank: | Unsubordinated debt | Fixed Rate Bonds II | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
4.70%
|
|
MUFG Bank: | Unsubordinated debt | Fixed Rate Bonds III |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 7,294
|
7,346
|
Interest rate, stated percentage |
1.81%
|
|
MUFG Bank: | Unsubordinated debt | Fixed Rate Borrowings I |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 2,358,191
|
20,186,175
|
MUFG Bank: | Unsubordinated debt | Fixed Rate Borrowings I | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
0.00%
|
|
MUFG Bank: | Unsubordinated debt | Fixed Rate Borrowings I | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
0.26%
|
|
MUFG Bank: | Unsubordinated debt | Adjustable Rate Borrowings II |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 1,442,400
|
0
|
Interest rate, stated percentage |
0.50%
|
|
MUFG Bank: | Unsubordinated debt | Adjustable Rate Borrowings I |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 0
|
167,308
|
Interest rate, stated percentage |
5.83%
|
|
MUFG Bank: | Unsubordinated debt | Fixed Rate Borrowings II |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 41,873
|
14,332
|
MUFG Bank: | Unsubordinated debt | Fixed Rate Borrowings II | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
2.93%
|
|
MUFG Bank: | Unsubordinated debt | Fixed Rate Borrowings II | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
3.87%
|
|
MUFG Bank: | Unsubordinated debt | Floating Rate Borrowings I |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 392,524
|
628,297
|
MUFG Bank: | Unsubordinated debt | Floating Rate Borrowings I | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
0.88%
|
|
MUFG Bank: | Unsubordinated debt | Floating Rate Borrowings I | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
5.41%
|
|
MUFG Bank: | Unsubordinated debt | Floating Rate Borrowings II |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 80,058
|
93,781
|
MUFG Bank: | Unsubordinated debt | Floating Rate Borrowings II | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
2.59%
|
|
MUFG Bank: | Unsubordinated debt | Floating Rate Borrowings II | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
3.45%
|
|
MUFG Bank: | Unsubordinated debt | Floating Rate Borrowings III |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 2,512
|
0
|
Interest rate, stated percentage |
2.05%
|
|
MUFG Bank: | Subordinated debt |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 222,300
|
242,500
|
MUFG Bank: | Subordinated debt | Fixed Rate Bonds I |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 175,800
|
176,000
|
MUFG Bank: | Subordinated debt | Fixed Rate Bonds I | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
1.95%
|
|
MUFG Bank: | Subordinated debt | Fixed Rate Bonds I | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
2.91%
|
|
MUFG Bank: | Subordinated debt | Fixed Rate Borrowings I |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 21,500
|
41,500
|
MUFG Bank: | Subordinated debt | Fixed Rate Borrowings I | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
1.88%
|
|
MUFG Bank: | Subordinated debt | Fixed Rate Borrowings I | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
2.24%
|
|
MUFG Bank: | Subordinated debt | Adjustable Rate Borrowings I |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 10,000
|
10,000
|
Interest rate, stated percentage |
1.53%
|
|
MUFG Bank: | Subordinated debt | Floating Rate Borrowings I |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 15,000
|
15,000
|
Interest rate, stated percentage |
0.96%
|
|
MUFG Bank: | Secured debt |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 291,023
|
360,081
|
MUFG Bank: | Secured debt | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
0.25%
|
|
MUFG Bank: | Secured debt | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
8.00%
|
|
Other subsidiaries: |
|
|
Debt Instrument [Line Items] |
|
|
Obligations under finance leases |
¥ 16,337
|
21,111
|
Total |
3,018,580
|
3,048,180
|
Other subsidiaries: | Unsubordinated debt |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
2,736,617
|
2,735,580
|
Other subsidiaries: | Unsubordinated debt | Fixed Rate Borrowings I |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 5,122
|
1,004
|
Other subsidiaries: | Unsubordinated debt | Fixed Rate Borrowings I | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
0.00%
|
|
Other subsidiaries: | Unsubordinated debt | Fixed Rate Borrowings I | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
0.07%
|
|
Other subsidiaries: | Unsubordinated debt | Floating Rate Borrowings I |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 188,934
|
64,086
|
Other subsidiaries: | Unsubordinated debt | Floating Rate Borrowings I | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
6.05%
|
|
Other subsidiaries: | Unsubordinated debt | Floating Rate Borrowings I | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
8.00%
|
|
Other subsidiaries: | Unsubordinated debt | Fixed Rate Borrowings, Bonds and Notes I |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 977,337
|
1,051,354
|
Other subsidiaries: | Unsubordinated debt | Fixed Rate Borrowings, Bonds and Notes I | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
0.00%
|
|
Other subsidiaries: | Unsubordinated debt | Fixed Rate Borrowings, Bonds and Notes I | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
14.30%
|
|
Other subsidiaries: | Unsubordinated debt | Fixed Rate Borrowings, Bonds and Notes II |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 30,185
|
59,522
|
Other subsidiaries: | Unsubordinated debt | Fixed Rate Borrowings, Bonds and Notes II | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
0.00%
|
|
Other subsidiaries: | Unsubordinated debt | Fixed Rate Borrowings, Bonds and Notes II | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
9.50%
|
|
Other subsidiaries: | Unsubordinated debt | Fixed Rate Borrowings, Bonds and Notes IV |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 317,394
|
336,892
|
Other subsidiaries: | Unsubordinated debt | Fixed Rate Borrowings, Bonds and Notes IV | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
0.00%
|
|
Other subsidiaries: | Unsubordinated debt | Fixed Rate Borrowings, Bonds and Notes IV | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
4.70%
|
|
Other subsidiaries: | Unsubordinated debt | Fixed Rate Borrowings, Bonds and Notes V |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 425,945
|
389,260
|
Other subsidiaries: | Unsubordinated debt | Fixed Rate Borrowings, Bonds and Notes V | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
0.50%
|
|
Other subsidiaries: | Unsubordinated debt | Fixed Rate Borrowings, Bonds and Notes V | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
9.00%
|
|
Other subsidiaries: | Unsubordinated debt | Floating/Adjustable Rate Borrowings, Bonds and Notes I |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 622,569
|
683,131
|
Other subsidiaries: | Unsubordinated debt | Floating/Adjustable Rate Borrowings, Bonds and Notes I | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
0.00%
|
|
Other subsidiaries: | Unsubordinated debt | Floating/Adjustable Rate Borrowings, Bonds and Notes I | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
27.11%
|
|
Other subsidiaries: | Unsubordinated debt | Floating Rate Borrowings, Bonds and Notes I |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 169,131
|
150,161
|
Other subsidiaries: | Unsubordinated debt | Floating Rate Borrowings, Bonds and Notes I | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
0.00%
|
|
Other subsidiaries: | Unsubordinated debt | Floating Rate Borrowings, Bonds and Notes I | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
27.50%
|
|
Other subsidiaries: | Unsubordinated debt | Adjustable Rate Bonds and Notes I |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 0
|
170
|
Other subsidiaries: | Unsubordinated debt | Adjustable Rate Bonds and Notes I | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
0.10%
|
|
Other subsidiaries: | Subordinated debt |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 265,626
|
291,489
|
Other subsidiaries: | Subordinated debt | Fixed Rate Borrowings, Bonds and Notes I |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 30,000
|
30,000
|
Other subsidiaries: | Subordinated debt | Fixed Rate Borrowings, Bonds and Notes I | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
1.92%
|
|
Other subsidiaries: | Subordinated debt | Fixed Rate Borrowings, Bonds and Notes I | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
2.61%
|
|
Other subsidiaries: | Subordinated debt | Fixed Rate Borrowings, Bonds and Notes II |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 2,049
|
2,386
|
Other subsidiaries: | Subordinated debt | Fixed Rate Borrowings, Bonds and Notes II | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
7.50%
|
|
Other subsidiaries: | Subordinated debt | Fixed Rate Borrowings, Bonds and Notes II | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
8.00%
|
|
Other subsidiaries: | Subordinated debt | Fixed Rate Borrowings, Bonds and Notes III |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 228,800
|
253,035
|
Other subsidiaries: | Subordinated debt | Fixed Rate Borrowings, Bonds and Notes III | Minimum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
3.00%
|
|
Other subsidiaries: | Subordinated debt | Fixed Rate Borrowings, Bonds and Notes III | Maximum |
|
|
Debt Instrument [Line Items] |
|
|
Interest rate, stated percentage |
4.30%
|
|
Other subsidiaries: | Subordinated debt | Floating Rate Borrowings Bonds And Notes II |
|
|
Debt Instrument [Line Items] |
|
|
Long-term debt |
¥ 4,777
|
¥ 6,068
|
Interest rate, stated percentage |
11.51%
|
|